doc_id
int32
18
2.25M
text
stringlengths
245
2.96k
source
stringlengths
38
44
__index_level_0__
int64
18
2.25M
331,323
According to a 2017 Cochrane review, vitamin A deficiency, using serum retinol less than 0.70 µmol/L as a criteria, is a major public health problem affecting an estimated 190 million children under five years of age in low- and middle-income countries, primarily in Sub-Saharan Africa and Southeast Asia. In lieu of or in combination with food fortification programs, many countries have implemented public health programs in which children are periodically given very large oral doses of synthetic vitamin A, usually retinyl palmitate, as a means of preventing and treating VAD. Doses were 50,000 to 100,000 IU (International units) for children aged 6 to 11 months and 100,000 to 200,000 IU for children aged 12 months to five years, the latter typically every four to six months. In addition to a 24% reduction in all-cause mortality, eye-related results were reported. Prevalence of Bitot's spots at follow-up were reduced by 58%, night blindness by 68%, xerophthalmia by 69%.
https://en.wikipedia.org/wiki?curid=54114
331,146
915,782
A preliminary version of the “OBJECT BASED STORAGE DEVICES Command Set Proposal” dated 10/25/1999 was submitted by Seagate as edited by Seagate’s Dave Anderson and was the product of work by the National Storage Industry Consortium (NSIC) including contributions by Carnegie Mellon University, Seagate, IBM, Quantum, and StorageTek. This paper was proposed to INCITS T-10 (International Committee for Information Technology Standards) with a goal to form a committee and design a specification based on the SCSI interface protocol.  This defined objects as abstracted data, with unique identifiers and metadata, how objects related to file systems, along with many other innovative concepts. Anderson presented many of these ideas at the SNIA conference in October 1999.  The presentation revealed an IP Agreement that had been signed in February 1997 between the original collaborators (with Seagate represented by Anderson and Chris Malakapalli) and covered the benefits of object storage, scalable computing, platform independence, and storage management.
https://en.wikipedia.org/wiki?curid=40572678
915,301
620,676
Occasionally, Ural owls are vulnerable to flying into manmade objects. In most parts of the range, they are less vulnerable than many other large birds of prey (in part because of their preference for remote forests) but certainly a few are likely to be claimed as such. Many such mortalities are due to wire collisions and electrocutions, which are likely increase especially as populations expand and move into areas closer to human habitations. Other collision kills, such as with glass buildings and, widely, with various automobiles, may too potentially be on the increase. Though historically subject to some degree of persecution, Ural owls were spared from the worst of it perhaps by nesting in remote forests and possibly by being generally less predatory to small domestic fowl, game animals and the like than large raptorial birds like Eurasian eagle-owls, golden eagles and northern goshawks, all of which were badly persecuted and thusly reduced. Like other wild birds, Ural owls may be vulnerable to some degree of mortality due to diseases and infections but these are unlikely to compromise overall populations. A case of the bacterial infectious disease "Tularemia" was observed in an ural owl as was Usutu virus in a single bird. 71.4% of 14 wild Ural owls in Japan had blood parasites while a smaller but still present number of "Acanthocephala" and roundworms were detected in known European data. Many Japanese Ural owls were also found to be vulnerable to biting lice.
https://en.wikipedia.org/wiki?curid=815909
620,345
71,379
The KC-135 was initially purchased to support bombers of the Strategic Air Command, but by the late 1960s, in the Southeast Asia theater, the KC-135 Stratotanker's ability as a force multiplier came to the fore. Midair refueling of F-105 and F-4 fighter-bombers as well as B-52 bombers brought far-flung bombing targets within reach, and allowed fighter missions to spend hours at the front, rather than a few minutes, which was usual due to their limited fuel reserves and high fuel consumption. KC-135 crews refueled both Air Force and Navy / Marine Corps aircraft; though they would have to change to probe and drogue adapters depending upon the mission, the Navy and Marine Corps not having fitted their aircraft with flying boom receptacles since the USAF boom system was impractical for aircraft carrier operations. Crews also helped to bring in damaged aircraft which could sometimes fly while being fed by fuel to a landing site or to ditch over the water (specifically those with punctured fuel tanks). KC-135s continued their tactical support role in later conflicts such as Operation Desert Storm and current aerial strategy.
https://en.wikipedia.org/wiki?curid=17441
71,352
1,509,041
Photoperiodism in "Wyeomyia smithii" is believed in nature to examine the startling finding that proposed, but not proven, recent climate change can force genetic change in plants and animals. "Wyeomyia smithii" lives through the winter as diapausing larvae in the leaves of the pitcher plant. The pitcher-plant mosquito enters a hibernal diapause as larvae. Which means, short days initiate and maintain diapause, and long days promote continuous development in diapausing larvae. The day length promotes 50% development and 50% diapause (the critical photoperiod) as the same for the initiation and termination of not developing in unchilled larvae. For the initiation of not developing, insects pass through a "sensitive period" during which day length is interpreted as long or short, which results in a diapause/no-diapause response. "Wyeomyia smithii" is photoperiodic while in diapause. The sensitive period is indefinitely long, and the effect of manipulating different light. Dark cycles can be assessed over weeks or months, instead of a few days. "Wyeomyia smithii" oviposits into and completes their entire preadult development only within the water-filled leaves of the carnivorous pitcher plant Sarracenia purpurea. Throughout this range, "W. smithii" occupies a uniform microhabitat whose community composition remains highly consistent. The photoperiodic response has been exposed to various seasonal changes, both in situ and during postglacial dispersal.
https://en.wikipedia.org/wiki?curid=20342839
1,508,192
561,694
The automotive industry as well as personal and public power generation are the largest markets for proton-exchange membrane fuel cells today. PEM fuel cells are popular in automotive applications due to their relatively low operating temperature and their ability to start up quickly even in below-freezing conditions. As of March 2019 there were 6,558 fuel cell vehicles on the road in the United States, with the Toyota Mirai being the most popular model. California leads the United States in hydrogen refueling stations with 43, with the California Energy Commission having access to $20 million per year in funding until 2023 to expand coverage. PEM fuel cells have seen successful implementation in other forms of heavy machinery as well, with Ballard Power Systems supplying forklifts based on the technology. The primary challenge facing automotive PEM technology is the safe and efficient storage of hydrogen, currently an area of high research activity.
https://en.wikipedia.org/wiki?curid=2328120
561,405
1,348,988
Mylodonts are generally considered to be grazers (graminivores) based on their high-crowned teeth with flat chewing surfaces, similar to those of modern grazers. However, the lack of enamel in the teeth of sloths makes comparisons difficult. The graminivorous diet was inferred based on the special tooth formation, analyses of the masticatory apparatus of "Paramylodon" showed that food was predominantly crushed in forward, backward, and lateral chewing movements, which is also indicated by corresponding grinding marks. This is not contradicted by the caniniform front teeth, which - if formed - are rather small. The mandibular joint is broadly developed in "Paramylodon" and has an unspecialized surface, the associated glenoid fossa on the skull appears shallow, which is typical of herbivores with their rotary chewing movements. However, an additional, nearly vertical articular facet occurs on the inner side, anchored in a depression on the outer wall of the wing bone. This tended to limit overly strong lateral masticatory movements. The arrangement of the "Musculus masseter" caused "Paramylodon" to open its mouth only 22°, which is considerably less than in two-toed sloths, which, however, have comparatively longer caniniform teeth. All in all, the structure of the masticatory apparatus rather suggests a preference for mixed plant diets.
https://en.wikipedia.org/wiki?curid=16886646
1,348,242
1,101,519
At the time of the expeditions, it was assumed that all horned dinosaur fossils found in the reservation belonged to a single species, especially as they came from a limited geological time period, its duration estimated at about half a million years. In the 1920s, George Freyer Sternberg had already found ceratopid bones there, that were named as a second species of "Styracosaurus": "Styracosaurus ovatus". The material had been rather limited and the validity of this species had been doubted, some considering it a "nomen dubium". The abundant new remains seemed to prove that the species was real, also because it clearly differed from the type species of "Styracosaurus", "Styracosaurus albertensis". The comprehensive taphonomic study by Raymond Robert Rogers from 1990 however, did not commit itself fully to this identification, merely mentioning a "Styracosaurus" sp. Rogers had joined the expedition in 1987. This reflected the fact that the expedition members had started to take the possibility into account that the species was completely new to science, informally referring to it as "Styracosaurus makeli" in honour of Bob Makela, who had died in a traffic accident in June 1987. In 1990, this name, as an invalid "nomen nudum" because it lacked a description, appeared in a photo caption in a book by Stephen Czerkas.
https://en.wikipedia.org/wiki?curid=1792393
1,100,958
501,904
From 1927 to 1928 Brattain worked for the National Bureau of Standards in Washington, D.C., where he helped to develop piezoelectric frequency standards. In August 1929 he joined Joseph A. Becker at Bell Telephone Laboratories as a research physicist. The two men worked on the heat-induced flow of charge carriers in copper oxide rectifiers. Brattain was able to attend a lecture by Arnold Sommerfeld. Some of their subsequent experiments on thermionic emission provided experimental validation for the Sommerfeld theory. They also did work on the surface state and work function of tungsten and the adsorption of thorium atoms. Through his studies of rectification and photo-effects on the semiconductor surfaces of cuprous oxide and silicon, Brattain discovered the photo-effect at the free surface of a semiconductor. This work was considered by the Nobel prize committee to be one of his chief contributions to solid state physics.
https://en.wikipedia.org/wiki?curid=33133
501,646
1,128,924
On December 10–13, 2020, Shirai (a postgraduate at Nittaidai) competed again at the 2020 All-Japan Championships in Takasaki, Japan, but less well as in seasons past, placing only 18th and fourth on individual AA (167.196) and FX (15.166). Local national AG federation repurposed the meet as another Olympic-qualifying event as officials chose the most in-form roster nearest to start of one COVID-affected 2020 Summer Olympics in Tokyo that was postponed until next summer with team of six men—four on the TAA event with team bronze at 2018's AG WC, where Shirai contributed on FX, VT and HB to team's total, plus two more on individual events. Due to public health issues of the COVID-19 pandemic, the 2020 Summer Olympics in Tokyo were delayed by one year until July 23–August 8, 2021. Our epidemic also put off and/or cancelled many Olympic-qualifying meets. In 2020, Shirai reluctantly started to consider retirement, a result of existing injuries, but returned early 2021 to compete at the 2021 All-Japan Championships, still trying to qualify for the OG. After failure at qualifying, he announced his immediate retirement from AG on June 16, 2021, missing him the 2021 AG WC hosted by home replacement city of Kitakyushu too. Shirai left behind the legacy of 13 major medals plus six eponyms.
https://en.wikipedia.org/wiki?curid=40713040
1,128,346
1,691,942
After a two-day rest, the Lady Vols resumed their season with three games in five days, starting with their final non-conference opponent, Memphis, on the road. UT started strong, taking a 16–6 lead to open up the game, only to give it back up. Memphis delighted its home crowd by taking a 38–31 lead with two minutes to go in the half, but Tennessee rallied and took a two-point lead to the locker room. Once again, Tennessee pulled away in the second half, 91–65, behind three players who scored over twenty: Holdsclaw (31), Randall (21), and Catchings (20). The next game was against Auburn, a program that is traditionally competitive within the conference. Once again, Summitt's team started the game strong, leading 32–16 before Auburn woke up, cutting the lead to five by the half. However, the Tigers would not get any closer than this, as Holdsclaw's 39 points helped Tennessee to yet another win, 79–63. The final game of this stretch was the rematch with Vanderbilt, played on President's Day in front of a sellout crowd at the Commodores' quirky Memorial Gymnasium and a national television audience on ESPN. The Commodores started off strong, taking a 16–7 lead in front of their home crowd. However Tennessee responded with seventeen straight points to take the lead, and led by nine at the halftime. As in previous games, the Lady Vols made a big run to open up the second half to put the game out of reach. UT won 91–60, with UT shooting over fifty percent yet again. The final game of the regular season came against LSU, a respectable SEC team which beat the Lady Vols the previous season in Baton Rouge, but still a few seasons away from becoming a national power. Tennessee played well on Senior Night, starting with a 32–8 lead that would never be given up. Tennessee completed the season with a 90–58 win, giving them a perfect 30–0 regular season.
https://en.wikipedia.org/wiki?curid=9723138
1,690,991
117,164
The University of Pittsburgh has been noted for both its role in community outreach and its impact on the economy of the city and the Western Pennsylvania region. In 2009, Pitt was ranked second overall, and the top public university in the nation, as a "Best Neighbor" for positive impact on its urban community, including both commercial and residential activities such as revitalization, cultural renewal, economics, and community service and development according to the "Saviors of Our Cities" ranking. Pitt was also listed as a "best neighbor" in the previous ranking released in 2006. These rankings reflect the statistics that each year Pitt spends more than $1.7 billion in the community and supports nearly 33,800 jobs in Allegheny County. The university is the Pittsburgh region's second largest non-government employer behind its affiliated University of Pittsburgh Medical Center (UPMC). Pitt's research program alone imports more than $822 million into the region each year (more than $3.60 for each $1 of state appropriations), and supports some 23,100 local jobs. Pitt students also spend more than $213 million on goods, services, and rental payments within the local economy. Pitt ranked sixth in the number of startups spawned by technologies developed by its researchers according to Association of University Technology Managers.
https://en.wikipedia.org/wiki?curid=239870
117,119
668,796
In humans, AADC is also the rate-limiting enzyme in the formation of trace amines. Aromatic l-amino acid decarboxylase deficiency is associated with various symptoms as severe developmental delay, oculogyric crises and autonomic dysfunction. The molecular and clinical spectrum of AAAC deficiency is heterogeneous. The first case of AADC deficiency was described in twin brothers 1990. Patients can be treated with dopamine agonists, MAO inhibitors, and pyridoxine (vitamin B). Clinical phenotype and response to treatment is variable and the long-term and functional outcome is unknown. To provide a basis for improving the understanding of the epidemiology, genotype–phenotype correlation and outcome of these diseases their impact on the quality of life of patients, and for evaluating diagnostic and therapeutic strategies a patient registry was established by the noncommercial International Working Group on Neurotransmitter Related Disorders (iNTD).
https://en.wikipedia.org/wiki?curid=905107
668,447
184,459
Since 1986, Goodenough has been a professor at The University of Texas at Austin in the Cockrell School of Engineering departments of Mechanical Engineering and Electrical Engineering. During his tenure there, he has continued his research on ionic conducting solids and electrochemical devices; he stated that he continued to study improved materials for batteries to help promote the development of electric vehicles and help reduce the dependency on fossil fuels. Arumugam Manthiram and Goodenough discovered the polyanion class of cathodes. They showed that positive electrodes containing polyanions, e.g., sulfates, produce higher voltages than oxides due to the inductive effect of the polyanion. The polyanion class includes materials such as lithium-iron phosphates that are used for smaller devices like power tools. His group has also identified various promising electrode and electrolyte materials for solid oxide fuel cells. He currently holds the Virginia H. Cockrell Centennial Chair in Engineering.
https://en.wikipedia.org/wiki?curid=1604706
184,362
920,217
After this victory, Cleisthenes began to reform the government of Athens. In order to forestall strife between the traditional clans, which had led to the tyranny in the first place, he changed the political organization from the four traditional tribes, which were based on family relations, and which formed the basis of the upper-class Athenian political power network, into ten tribes according to their area of residence (their "deme",) which would form the basis of a new democratic power structure. It is thought that there may have been 139 demes (though this is still a matter of debate), each organized into three groups called "trittyes" ("thirds"), with ten "demes" divided among three regions in each trittyes (a city region, "asty"; a coastal region, "paralia"; and an inland region, "mesogeia"). D.M Lewis argues that Cleisthenes established the "deme" system in order to balance the central unifying force that a tyranny has with the democratic concept of having the people (instead of a single person) at the peak of political power. Another by-product of the "deme" system was that it split up and weaken his political adversaries. Cleisthenes also abolished patronymics in favour of "demonymics" (a name given according to the "deme" to which one belongs), thus increasing Athenians' sense of belonging to a "deme". This and the other aforementioned reforms had an additional effect in that they worked to include (wealthy, male) foreign citizens in Athenian society.
https://en.wikipedia.org/wiki?curid=321019
919,731
1,242,639
LDR prostate brachytherapy (seed or line source implantation) is a proven treatment for low to high risk localized prostate cancer (when the cancer is contained within the prostate).<ref name="Kupelian PA, Potters L, Khuntia D et al. Radical prostatectomy, external beam radiotherapy less than 72 Gy, external beam radiotherapy ≥72 Gy, permanent seed implantation, or combined seeds/external beam radiotherapy for stage T1-T2 prostate cancer. International Journal of Radiation Oncology, Biology, Physics 2004;58:25–33"></ref> Under a general anaesthetic, the radioactive seeds are injected through fine needles directly into the prostate, so that the radiotherapy can destroy the cancer cells. The seeds are permanently implanted. They remain in place but gradually become inactive as the radioactivity decays naturally and safely over time. Unlike traditional surgery, LDR brachytherapy requires no incisions and is normally carried out as an outpatient (day case) procedure. Sometimes a single overnight stay in hospital is required. Patients usually recover quickly from LDR brachytherapy. Most men can return to work or normal daily activities within a few days. LDR brachytherapy has fewer side-effects with less risk of incontinence or impotence than other treatment options. It is a popular alternative to major surgery (conventional radical prostatectomy or laparoscopic (keyhole surgery) radical prostatectomy).
https://en.wikipedia.org/wiki?curid=17769499
1,241,967
215,523
The "supposition" that the electric charges of electrons and protons seem to cancel each other exactly to extreme precision is essential for the existence of the macroscopic world as we know it, but this important property of elementary particles is not explained in the Standard Model of particle physics. While the description of strong and weak interactions within the Standard Model is based on gauge symmetries governed by the simple symmetry groups and which allow only discrete charges, the remaining component, the weak hypercharge interaction is described by an abelian symmetry which in principle allows for arbitrary charge assignments. The observed charge quantization, namely the postulation that all known elementary particles carry electric charges which are exact multiples of one-third of the "elementary" charge, has led to the idea that hypercharge interactions and possibly the strong and weak interactions might be embedded in one Grand Unified interaction described by a single, larger simple symmetry group containing the Standard Model. This would automatically predict the quantized nature and values of all elementary particle charges. Since this also results in a prediction for the relative strengths of the fundamental interactions which we observe, in particular, the weak mixing angle, grand unification ideally reduces the number of independent input parameters but is also constrained by observations.
https://en.wikipedia.org/wiki?curid=12610
215,415
801,630
Coastal upwelling has a major influence over the affected region's local climate. This effect is magnified if the ocean current is already cool. As the cold, nutrient-rich water moves upwards and the sea surface temperature gets cooler, the air immediately above it also cools down and is likely to condensate, forming sea fog and stratus clouds. This also inhibits the formation of higher altitude clouds, showers and thunderstorms and results in rainfall over the ocean leaving the land dry. In year-round upwelling systems (like that of the western coasts of Southern Africa and South America), temperatures are generally cooler and precipitation scarce. Seasonal upwelling systems are often paired with seasonal downwelling systems (like that of the western coasts of the United States and Iberian Peninsula), resulting in cooler, drier than average summers and milder, wetter than average winters. Permanent upwelling locations typically have semi-arid/desert climates while seasonal upwelling locations usually have Mediterranean/semi-arid climates, oceanic in some cases. Some worldwide cities affected by strong upwelling regimes include: San Francisco, Antofagasta, Sines, Essaouira, Walvis Bay, among others.
https://en.wikipedia.org/wiki?curid=105659
801,202
918,430
CAN FD (Controller Area Network Flexible Data-Rate) is a data-communication protocol used for broadcasting sensor data and control information on 2 wire interconnections between different parts of electronic instrumentation and control system. This protocol is used in modern high performance vehicles. CAN FD is an extension to the original CAN bus protocol that was specified in ISO 11898-1. The basic idea to overclock part of the frame and to oversize the payload dates back to 1999. Developed in 2011 and released in 2012 by Bosch, CAN FD was developed to meet the need to increase the data transfer rate up to 5 times faster and with larger frame/message sizes for use in modern automotive Electronic Control Units (ECUs). As in the classic CAN, CAN FD protocol is designed to reliably transmit and receive sensor data, control commands and to detect data errors between electronic sensor devices, controllers and microcontrollers. Although CAN FD was primarily designed for use in high performance vehicle ECUs, the pervasiveness of classic CAN in the different industries will lead into inclusion of this improved data-communication protocol in a variety of other applications as well, such as in electronic systems used in robotics, defense, industrial automation, underwater vehicles, medical equipment, avionics, down-hole drilling sensors, etc.
https://en.wikipedia.org/wiki?curid=52986378
917,947
2,070,179
The Wagman Observatory hill, located in the northeast corner of Deer Lakes Park at , is ideally suited for an astronomical facility. At 1340 feet elevation, it is one of the highest points in Allegheny County, and one of the few such sites not already occupied by a radio mast, microwave relay tower, or water tank. It is believed that local Indian tribes in the area, such as the Seneca, once used the hill as a lookout for watching game and the activities of neighboring tribes. The hill affords an almost 100% view of the sky. Because of its location in a relatively rural country park, the observatory is protected from the majority of commercial or residential development that could cause excessive stray and misdirected lighting (Light Pollution). Yet the site can be reached from downtown Pittsburgh in 45 minutes, and even from the southern reaches of the county in less than an hour, thanks to the proximity of the Route 28 expressway, and the Pennsylvania Turnpike.
https://en.wikipedia.org/wiki?curid=2915993
2,068,988
336,310
While each intervention claims to improve basic numerosity skills, the authors of these interventions do admit that repetition and practice effects may be a factor involved in reported performance gains. An additional criticism is that these digital interventions lack the option to manipulate numerical quantities. While the previous two games provide the correct answer, the individual using the intervention cannot actively determine, through manipulation, what the correct answer should be. Butterworth and colleagues argued that games like The Number Bonds, which allows an individual to compare different sized rods, should be the direction that digital interventions move toward. Such games use manipulation activities to provide intrinsic motivation toward content guided by dyscalculia research. One of these serious games is Meister Cody – Talasia, an online training that includes the CODY Assessment – a diagnostic test for detecting dyscalculia. Based on these findings, Dybuster Calcularis was extended by adaptation algorithms and game forms allowing manipulation by the learners. It was found to improve addition, subtraction and number line tasks, and was made available as Dybuster Calcularis.
https://en.wikipedia.org/wiki?curid=533237
336,132
783,778
One of the processes to enhance the learning experience was the virtual resource room, which is student-centered, works in a self-paced format, and which encourages students to take responsibility for their own learning. In virtual mode, the materials are available in the form of computer-aided learning programs, lecture notes, special self-assessment modules. Another mechanism for the student to student interactions in a form of simple discussion forum is by using a novel link cyber tutor. This allows the students with an email account to connect with course content and the staff with their doubts and related questions. The students are able to contact the staff without a face to face visit which saves the on-campus time. The staff remains anonymous which allows for the several staff to act as a cyber tutor during the course. The student does not remain anonymous, although their email address is cryptic enough to mask their identity. Students can discuss the exams, lab reports, posters, lectures, technical help with downloading materials. The evaluation of the use of a Virtual resource room is done by surveys, focus groups, and online feedback forms. The students have 24 hours of access to the learning material in a day which suits their lifestyles.
https://en.wikipedia.org/wiki?curid=34193404
783,359
1,956,357
The championship game saw Michigan returning for the first time since 1977 where they faced a familiar foe. The Wolvers had played Colorado College for the NCAA championship three times before, though not since 1957 (which was CC's last championship appearance), and now the top two teams in the nation were the only ones left vying for the title. Michigan opened the scoring in the first but after the Tigers' rebounded in the second Michigan found itself down 1–2. Mike Legg tied the game on the power play but neither team could regain the lead before the end of regulation. When overtime began the Michigan faithful grew worried; the Wolverines had lost in overtime in each of the previous three NCAA tournaments and desperately hoping that they were not about to see a repeat performance. Both team played conservatively for the first few minutes but when a clearing attempt from Colin Schmidt hit Morrison the puck bounced to the Wolverine alternate captain who slid the puck to Greg Crozier in the high slot. Crozier's shot was blocked but the puck bounced to Bill Muckalt who was standing off to the side of the net. Bob Needham slid to block the shot but it got on goal where Ryan Bach made the save but ended up off-balance, falling away from the front of the cage. The rebound slid to a stop at the top of the goal crease when Morrison came streaking in from the right circle and knocked the puck into a half-vacated net for Michigan's 8th national championship and 1st in 32 years.
https://en.wikipedia.org/wiki?curid=29122654
1,955,235
1,790,392
The "Los Angeles Times" reported on the use of the program in that city's schools, creating a searchable web site that provided the score calculated by the value-added modeling system for 6,000 elementary school teachers in the district. United States Secretary of Education Arne Duncan praised the newspaper's reporting on the teacher scores citing it as a model of increased transparency, though he noted that greater openness must be balanced against concerns regarding "privacy, fairness and respect for teachers". In February, 2011, Derek Briggs and Ben Domingue of the National Education Policy Center (NEPC) released a report reanalyzing the same dataset from the L.A. Unified School District, attempting to replicate the results published in the "Times", and they found serious limitations of the previous research, concluding that the "research on which the Los Angeles Times relied for its August 2010 teacher effectiveness reporting was demonstrably inadequate to support the published rankings."
https://en.wikipedia.org/wiki?curid=28661419
1,789,386
282,106
Many thrips are pests of commercial crops due to the damage they cause by feeding on developing flowers or vegetables, causing discoloration, deformities, and reduced marketability of the crop. Some thrips serve as vectors for plant diseases, such as tospoviruses. Over 20 plant-infecting viruses are known to be transmitted by thrips, but perversely, less than a dozen of the described species are known to vector tospoviruses. These enveloped viruses are considered among some of the most damaging of emerging plant pathogens around the world, with those vector species having an outsized impact on human agriculture. Virus members include the tomato spotted wilt virus and the impatiens necrotic spot viruses. The western flower thrips, "Frankliniella occidentalis", has spread until it now has a worldwide distribution, and is the primary vector of plant diseases caused by tospoviruses. Other viruses that they spread include the genera "Ilarvirus", "(Alpha|Beta|Gamma)carmovirus", "Sobemovirus" and "Machlomovirus." Their small size and predisposition towards enclosed places makes them difficult to detect by phytosanitary inspection, while their eggs, laid inside plant tissue, are well-protected from pesticide sprays. When coupled with the increasing globalization of trade and the growth of greenhouse agriculture, thrips, unsurprisingly, are among the fastest growing group of invasive species in the world. Examples include "F. occidentalis", "Thrips simplex", and "Thrips palmi".
https://en.wikipedia.org/wiki?curid=371272
281,953
181,718
For James, the deepest practical difference in the moral life is between what he calls "the easy-going and the strenuous mood." In a purely human moral system, it is hard to rise above the easy-going mood, since the thinker's "various ideals, known to him to be mere preferences of his own, are too nearly of the same denominational value; he can play fast and loose with them at will. This too is why, in a merely human world without a God, the appeal to our moral energy falls short of its maximum stimulating power." Our attitude is "entirely different" in a world where there are none but "finite demanders" from that in a world where there is also "an infinite demander." This is because "the stable and systematic moral universe for which the ethical philosopher asks is fully possible only in a world where there is a divine thinker with all-enveloping demands", for in that case, "actualized in his thought already must be that ethical philosophy which we seek as the pattern which our own must evermore approach." Even though "exactly what the thought of this infinite thinker may be is hidden from us", our postulation of him serves "to let loose in us the strenuous mood" and confront us with an existential "challenge" in which "our total character and personal genius ... are on trial; and if we invoke any so-called philosophy, our choice and use of that also are but revelations of our personal aptitude or incapacity for moral life. From this unsparing practical ordeal no professor's lectures and no array of books can save us." In the words of Richard M. Gale, "God inspires us to lead the morally strenuous life in virtue of our conceiving of him as unsurpassably "good". This supplies James with an adequate answer to the underlying question of the "Euthyphro"."
https://en.wikipedia.org/wiki?curid=525885
181,622
452,195
Carbon-14 is not the only isotope that can be produced by energetic particles. Beryllium-10 (Be, half-life 1.4 million years) is also formed from nitrogen and oxygen, and deposited in polar ice. However, Be deposition can be strongly related to local weather and shows extreme geographic variability; it is also more difficult to assign dates. Nevertheless, a Be increase during the 770s was found in an ice core from the Antarctic, though the signal was less striking because of the lower time resolution (several years); another smaller increase was seen in Greenland. When data from two sites in North Greenland and one in the West Antarctic, all taken with a one-year resolution, were compared they all showed a strong signal: the time profile also matched well with the C results (within the uncertainty of dating for the Be data). Chlorine-36 (Cl, half-life 301 thousand years) can be produced from argon and deposited in polar ice; because argon is a minor atmospheric constituent the abundance is low. The same ice cores which showed Be also provided increases of Cl, though with a resolution of five years a detailed match was impossible.
https://en.wikipedia.org/wiki?curid=24728109
451,976
182,385
Astrobiology is the multidisciplinary field that investigates the deterministic conditions and contingent events with which life arises, distributes, and evolves in the universe. Astrobiology makes use of physics, chemistry, astronomy, solar physics, biology, molecular biology, ecology, planetary science, geography, and geology to investigate the possibility of life on other worlds and help recognize biospheres that might be different from that on Earth. Astrobiologists are particularly interested in studying extremophiles, as it allows them to map what is known about the limits of life on Earth to potential extraterrestrial environments For example, analogous deserts of Antarctica are exposed to harmful UV radiation, low temperature, high salt concentration and low mineral concentration. These conditions are similar to those on Mars. Therefore, finding viable microbes in the subsurface of Antarctica suggests that there may be microbes surviving in endolithic communities and living under the Martian surface. Research indicates it is unlikely that Martian microbes exist on the surface or at shallow depths, but may be found at subsurface depths of around 100 meters.
https://en.wikipedia.org/wiki?curid=9619
182,289
546,275
The Australian Army also contributed troops to the British Commonwealth Occupation Force (BCOF) in Japan. Volunteers for this force were recruited in late 1945, with most being assigned to three new infantry battalions: the 65th Battalion was formed from volunteers from the 7th Division, the 66th Battalion by men from the 6th Division and the 67th from 9th Division personnel. These and other units were grouped at Morotai as the 34th Brigade in October 1945. The brigade's departure for Japan was delayed until February 1946 by inter-Allied negotiations, but it eventually took over responsibility for enforcing the terms of the Japanese surrender in Hiroshima Prefecture. The three infantry battalions raised for occupation duties were designated the 1st, 2nd and 3rd battalions of the Royal Australian Regiment in 1949, and the 34th Brigade became the 1st Brigade when it returned to Australia in December 1948, forming the basis of the post-war Regular Army. From that time the Australian Army contribution to the occupation of Japan was reduced to a single under-strength battalion. Australian forces remained until September 1951 when the BCOF ceased operations, although by the time the majority of units had been committed to the fighting on the Korean peninsula following the outbreak of the Korean War on 25 June 1950.
https://en.wikipedia.org/wiki?curid=22738876
545,989
950,741
1702–1703: Guillaume Amontons (1663–1705) published two papers that may be used to credit him as being the first researcher to deduce the existence of a fundamental (thermodynamic) temperature scale featuring an absolute zero. He made the discovery while endeavoring to improve upon the air thermometers in use at the time. His J-tube thermometers comprised a mercury column that was supported by a fixed mass of air entrapped within the sensing portion of the thermometer. In thermodynamic terms, his thermometers relied upon the volume / temperature relationship of gas under constant pressure. His measurements of the boiling point of water and the melting point of ice showed that regardless of the mass of air trapped inside his thermometers or the weight of mercury the air was supporting, the reduction in air volume at the ice point was always the same ratio. This observation led him to posit that a sufficient reduction in temperature would reduce the air volume to zero. In fact, his calculations projected that absolute zero was equivalent to −240 °C—only 33.15 degrees short of the true value of −273.15 °C. Amonton's discovery of a one-to-one relationship between absolute temperature and absolute pressure was rediscovered a century later and popularized within the scientific community by Joseph Louis Gay-Lussac. Today, this principle of thermodynamics is commonly known as "Gay-Lussac's law" but is also known as "Amonton's law".
https://en.wikipedia.org/wiki?curid=41789
950,237
295,150
Like other plant pathogenic viruses, TMV has a very wide host range and has different effects depending on the host being infected. "Tobacco mosaic virus" has been known to cause a production loss for flue cured tobacco of up to two percent in North Carolina. It is known to infect members of nine plant families, and at least 125 individual species, including tobacco, tomato, pepper (all members of the useful Solanaceae), cucumbers, a number of ornamental flowers, and beans including "Phaseolus vulgaris" and "Vigna unguiculata". There are many different strains. The first symptom of this virus disease is a light green coloration between the veins of young leaves. This is followed quickly by the development of a "mosaic" or mottled pattern of light and dark green areas in the leaves. Rugosity may also be seen where the infected plant leaves display small localized random wrinkles. These symptoms develop quickly and are more pronounced on younger leaves. Its infection does not result in plant death, but if infection occurs early in the season, plants are stunted. Lower leaves are subjected to "mosaic burn" especially during periods of hot and dry weather. In these cases, large dead areas develop in the leaves. This constitutes one of the most destructive phases of "Tobacco mosaic virus" infection. Infected leaves may be crinkled, puckered, or elongated. However, if TMV infects crops like grape and apple, it is almost symptomless. TMV is able to infect and complete its replication cycle in a plant pathogenic fungus,TMV is able to enter and replicate in cells of C. acutatum, C. clavatum, and C. theobromicola, which may not be an exception, although it has neither been found nor probably searched for in nature.
https://en.wikipedia.org/wiki?curid=164217
294,990
1,099,182
Teachers often have the ability to enter new problems into the system or adjust the curriculum. In addition, teachers and peers often interact with students while they learn with ITSs (e.g., during an individual computer lab session or during classroom lectures falling in between lab sessions) in ways that may influence their learning with the software. Prior work suggests that the vast majority of students' help-seeking behavior in classrooms using ITSs may occur entirely outside of the software - meaning that the nature and quality of peer and teacher feedback in a given class may be an important mediator of student learning in these contexts. In addition, aspects of classroom climate, such as students' overall level of comfort in publicly asking for help, or the degree to which a teacher is physically active in monitoring individual students may add additional sources of variation across evaluation contexts. All of these variables make evaluation of an ITS complex, and may help explain variation in results across evaluation studies.
https://en.wikipedia.org/wiki?curid=3765637
1,098,622
330,340
In the final months of the war the ground attack groups were still able to impose operational constraints upon the enemy. Most notably the aircraft participated in the defence of Berlin. On 12 January 1945 the 1st Belorussian Front initiated the Vistula–Oder Offensive. The offensive made rapid progress. The Soviets eventually outran their air support which was unable to use forward, quagmire-filled, airfields. The Germans, who had fallen back on airbases with good facilities and concrete runways, were able to mount uninterrupted attacks against Soviet army columns. Reminiscent of the early years, the "Luftwaffe" was able to inflict high losses largely unopposed. Over 800 vehicles were destroyed within two weeks. In the first three days of February 1945, 2,000 vehicles and 51 tanks were claimed to be lost to German air attacks. The Ju 87 participated in these intense battles in small numbers. It was the largest concentration of German air power since 1940 and even in February 1945 the Germans were able to achieve and challenge for air superiority on the Eastern Front. The air offensive was instrumental in saving Berlin, albeit only for three months. The effort exhausted German fuel reserves. The contribution of the Ju 87 was exemplified by Rudel, who claimed 13 enemy tanks on 8 February 1945.
https://en.wikipedia.org/wiki?curid=16590
330,165
1,879,007
In 2010 he set a season target of defending his European title. He suffered a minor injury to his soleus muscle in March, but recovered and began his preparation in South Africa and Cyprus. He identified Dai Greene (the eventual winner) as his main European rival in the event. Finally he did not succeed in his goal, as he finished in the fifth place in the 2010 European final, having run in the tight first lane. He was slower in the 2011 season and, for the first time since 1998, his fastest run that year was over 50 seconds. He missed a seventh consecutive appearance at the World Championships, but did compete for Greece in the First League of the 2011 European Team Championships, where he won the 400 m hurdles race. He marked a resurgence in form at the 2012 Greek Championships by winning his 15th straight national title, including a run of 49.04 seconds in the heats.
https://en.wikipedia.org/wiki?curid=6554672
1,877,927
795,571
LDPE and LLDPE have unique rheological or melt flow properties. LLDPE is less shear sensitive because of its narrower molecular weight distribution and shorter chain branching. During a shearing process, such as extrusion, LLDPE remains more viscous and, therefore, harder to process than an LDPE of equivalent melt index. The lower shear sensitivity of LLDPE allows for a faster stress relaxation of the polymer chains during extrusion, and, therefore, the physical properties are susceptible to changes in blow-up ratios. In melt extension, LLDPE has lower viscosity at all strain rates. This means it will not strain harden the way LDPE does when elongated. As the deformation rate of the polyethylene increases, LDPE demonstrates a dramatic rise in viscosity because of chain entanglement. This phenomenon is not observed with LLDPE because of the lack of long-chain branching in LLDPE allows the chains to slide by one another upon elongation without becoming entangled. This characteristic is important for film applications because LLDPE films can be downgauged easily while maintaining high strength and toughness. The rheological properties of LLDPE are summarized as "stiff in shear" and "soft in extension". LLDPE can be recycled though into other things like trash can liners, lumber, landscaping ties, floor tiles, compost bins, and shipping envelopes
https://en.wikipedia.org/wiki?curid=2138454
795,146
1,885,816
Ralph Vary Chamberlin was born on January 3, 1879, in Salt Lake City, Utah, to parents William Henry Chamberlin, a prominent builder and contractor, and Eliza Frances Chamberlin (née Brown). Chamberlin traced his paternal lineage to an English immigrant settling in the Massachusetts Bay Colony in 1638, and his maternal lineage to an old Pennsylvania Dutch family. Born to Mormon parents, the young Chamberlin attended Latter-day Saints' High School, and although very interested in nature, initially decided to study mathematics and art before choosing biology. His brother William, the eldest of 12 children, also shared Ralph's scientific interests and would later teach alongside him. Ralph attended the University of Utah, graduating with a B.S. degree in 1898, and subsequently spent four years teaching high school and some college-level courses in biology as well as geology, chemistry, physics, Latin, and German at Latter-day Saints' University. By 1900 he had authored nine scientific publications.
https://en.wikipedia.org/wiki?curid=3997448
1,884,734
844,459
The most unusual characteristic of Computer Modern, however, is the fact that it is a complete type family designed with Knuth's Metafont system, one of the few typefaces developed in this way. The Computer Modern source files are governed by 62 distinct parameters, controlling the widths and heights of various elements, the presence of serifs or old-style numerals, whether dots such as the dot on the "i" are square or rounded, and the degree of "superness" in the bowls of lowercase letters such as "g" and "o". This allows Metafont designs to be processed in unusual ways; Knuth has shown effects such as morphing in demonstrations, where one font slowly transitions into another over the course of a text. While it attracted attention for the concept, Metafont has been used by few other font designers; by 1996 Knuth commented "asking an artist to become enough of a mathematician to understand how to write a font with 60 parameters is too much" while digital-period font designer Jonathan Hoefler commented in 2015 that "Knuth's idea that letters start with skeletal forms is flawed".
https://en.wikipedia.org/wiki?curid=639806
844,009
420,735
The Hunt "GravityPlane" (not to be confused with the ground-based gravity plane) is a proposed gravity-powered glider by Hunt Aviation in the US. It also has aerofoil wings, improving its lift-drag ratio and making it more efficient. The GravityPlane requires a large size in order to obtain a large enough volume-to-weight ratio to support this wing structure, and no example has yet been built. Unlike a powered glider, the GravityPlane does not consume power during the climbing phase of flight. It does however consume power at the points where it changes its buoyancy between positive and negative values. Hunt claim that this can nevertheless improve the energy efficiency of the craft, similar to the improved energy efficiency of underwater gliders over conventional methods of propulsion. Hunt suggest that the low power consumption should allow the craft to harvest sufficient energy to stay aloft indefinitely. The conventional approach to this requirement is the use of solar panels in a solar-powered aircraft. Hunt has proposed two alternative approaches. One is to use a wind turbine and harvest energy from the airflow generated by the gliding motion, the other is a thermal cycle to extract energy from the differences in air temperature at different altitudes.
https://en.wikipedia.org/wiki?curid=2221267
420,530
1,290,339
The geology of Arizona began to form in the Precambrian. Igneous and metamorphic crystalline basement rock may have been much older, but was overwritten during the Yavapai and Mazatzal orogenies in the Proterozoic. The Grenville orogeny to the east caused Arizona to fill with sediments, shedding into a shallow sea. Limestone formed in the sea was metamorphosed by mafic intrusions. The Great Unconformity is a famous gap in the stratigraphic record, as Arizona experienced 900 million years of terrestrial conditions, except in isolated basins. The region oscillated between terrestrial and shallow ocean conditions during the Paleozoic as multi-cellular life became common and three major orogenies to the east shed sediments before North America became part of the supercontinent Pangaea. The breakup of Pangaea was accompanied by the subduction of the Farallon Plate, which drove volcanism during the Nevadan orogeny and the Sevier orogeny in the Mesozoic, which covered much of Arizona in volcanic debris and sediments. The Mid-Tertiary ignimbrite flare-up created smaller mountain ranges with extensive ash and lava in the Cenozoic, followed by the sinking of the Farallon slab in the mantle throughout the past 14 million years, which has created the Basin and Range Province. Arizona has extensive mineralization in veins, due to hydrothermal fluids and is notable for copper-gold porphyry, lead, zinc, rare minerals formed from copper enrichment and evaporites among other resources.
https://en.wikipedia.org/wiki?curid=57850771
1,289,629
1,628,677
During phase I of the process of consensus, a subset of the committee was created to synthesize competencies from the documents under review that would apply to all registered nurses; then the steering committee reviewed, modified, and approved the recommended competencies. In 2005, nurse representatives of the National Coalition for Health Professional Education in Genetics also reviewed the proposed competencies and made modifications. Throughout phase II, the American Nursing Association published the competencies during a meeting in 2006 and requested judgment, thoughts, and comments from the public, specifically targeting the insight from the nursing community. The 10 comments that were received were recorded and evaluated and the majority of them showed support. Phase III consisted of establishing consensus on the final draft of the essential competencies by the steering committee and the consensus panel, which is also made up of a variety of nursing leaders in different organizations and settings. The steering committee also constructed strategies for integrating genetic and genomic information into education and practice such as the NCLEX exam, accreditation programs, certification processes, and nursing curriculum. In March 2006, phase IV occurred and consisted of endorsing the final document by the Nursing Organizations Alliance member organizations.
https://en.wikipedia.org/wiki?curid=38429723
1,627,758
1,026,882
Beach's String Quartet is a single movement and deemed as one of her more mature works. It was originally labeled as Op. 79, but over the course of a decade, the work evolved, and Beach finally re-designated the piece as Op. 89 in 1929. The significance Beach bestowed this piece is unique given that it did not feature a piano part which she would perform, as she did with many of her other works. Because of the timing of the piece's composition, there is some evidence that Beach may have been inspired to write the work as part of Elizabeth Sprague Coolidge's chamber music competition in 1922. Numerous painstaking attempts demonstrate both Beach's devotion to the composition of this piece and her unfamiliarity with writing in this genre. The final work, completed in Rome, consists of a single movement divided into three sections, and thematically speaking, follows an arch form (A B C B1 A1). The piece uses three different Eskimo or Inuit melodies throughout the work: "Summer Song", "Playing at Ball", and "Itataujang's Song", taken from Franz Boas' book on the Alaskan Inuit tribes. Beach integrates these borrowed tunes within a framework of Austro-Germanic extended quasi-tonality and dissonance, first through more straightforward statements of the melodies and then as assimilated into a horizontal harmonic structure. Elements of the melodies are abstracted and developed into contrapuntal lines which propel the work forward in the absence of clear tonal direction. The texture and harmony is fairly stark in places, lacking the lush Romanticism of her earlier works and representing more Modernist inclinations of a developing composer.
https://en.wikipedia.org/wiki?curid=410203
1,026,348
2,187,609
The Bolivian TIPA programme is a collaboration between the Royal Botanic Gardens, Kew, the Museo História Natural Noel Kempff Mercado (MHNNKM) and Fundación Amigos de la Naturaleza (FAN), both in Santa Cruz. The programme was launched in 2016 with funds from the Eva-Langley Metcalf Trust, and has since received funding form the Darwin Initiative and William Cadbury Trust to support the implementation of the TIPA sites and building sustainable livelihoods in local communities. The Chiquitania dry forest and savanna ecoregion, located in the eastern lowlands of the department of Santa Cruz, was initially selected as the project focus due to the rapidly increasing rate of forest destruction. The partnerships involves 1) joint field expeditions, global IUCN Red List assessments of 200 Chiquitania endemic plant species; 2) building Bolivian capacity in seed banking and IUCN Red List assessment and TIPA methodology; and 3) TIPA site assessments which are underway to be completed in 2020 in 20 potential sites, including the Serranía de Chiquitos, inselberg archipelago of Lomerío, San Matias AMNI and the Noel Kempff Mercado National Park.
https://en.wikipedia.org/wiki?curid=63464632
2,186,361
1,517,639
Roberto Piazza’s 2016 paper on the Dulong–Petit law provides biographical and temperament details by contemporary and fellow physicist, Jules Jamin. “Petit had a lively intelligence, an elegant and easy speech, he seduced with an amiable look, got easily attached, and surrendered himself to his tendencies rather than governing them. He was credited with an instinctive scientific intuition, a power of premature invention, certain presages of an assured future that everyone foresaw and even desired, so great was the benevolence which he inspired. Dulong was the opposite: His language was thoughtful, his attitude serious and his appearance cold[. . . ] He worked slowly but with certainty, with a continuity and a power of will that nothing stopped, I should say with a courage that no danger could push back. In the absence of that vivacity of the mind which invents easily, but likes to rest, he had the sense of scientific exactness, the gusto for precision experiments, the talent of combining them, the patience of completing them, and the art, unknown before him, to carry them to the limits of accuracy[. . . ] Petit had more mathematical tendency, Dulong was more experimental; the first carried in the work more brilliant easiness, the second more continuity; One represented imagination, the other reason, which moderates and contains it.”
https://en.wikipedia.org/wiki?curid=144230
1,516,787
183,255
Due to the potential for widespread usage and the evolving needs of researchers, many different mutants of GFP have been engineered. The first major improvement was a single point mutation (S65T) reported in 1995 in "Nature" by Roger Tsien. This mutation dramatically improved the spectral characteristics of GFP, resulting in increased fluorescence, photostability, and a shift of the major excitation peak to 488 nm, with the peak emission kept at 509 nm. This matched the spectral characteristics of commonly available FITC filter sets, increasing the practicality of use by the general researcher. A 37 °C folding efficiency (F64L) point mutant to this scaffold, yielding enhanced GFP (EGFP), was discovered in 1995 by the laboratories of Thastrup and Falkow. EGFP allowed the practical use of GFPs in mammalian cells. EGFP has an extinction coefficient (denoted ε) of 55,000 Mcm. The fluorescence quantum yield (QY) of EGFP is 0.60. The relative brightness, expressed as ε•QY, is 33,000 Mcm.
https://en.wikipedia.org/wiki?curid=143533
183,159
1,812,324
Many biomedical devices that come into contact with bodily fluids are susceptible to adverse foreign body response, or rejection and thus, failure of the device. The main mechanism of infection is the formation of a biofilm, which is a matrix of sessile bacteria consisting of around 15% bacterial cells by mass and 85% hydrophobic exopolysaccharide fibers. One way to eliminate this risk is to apply localized treatment to the area in the vicinity of the implant. This can be done by applying a drug-impregnated polyelectrolyte multi-layer to the medical device prior to implantation. The goal with this technology is to create a combination of polyelectrolyte multi-layers where one multi-layer prevents the formation of a biofilm and another releases a small-molecule drug through diffusion. This would be more effective than the current technique of releasing a high dose of drugs into the body and counting on some of it to navigate to the afflicted area. The base layer for an effective coating for an implant is DMLPEI/PAA, or linear N, N-dodecyl,methyl-poly(ethyleneimine) / poly (acrylic acid).
https://en.wikipedia.org/wiki?curid=32005612
1,811,291
1,033,051
Another major, though erratic, export item was indigo dye, which was extracted from natural indigo, and which came to be grown in Bengal and northern Bihar. In late 17th and early 18th century Europe, blue apparel was favoured as a fashion, and blue uniforms were common in the military; consequently, the demand for the dye was high. In 1788, the East India Company offered advances to ten British planters to grow indigo; however, since the new (landed) property rights defined in the Permanent Settlement, didn't allow them, as Europeans, to buy agricultural land, they had to in turn offer cash advances to local peasants, and sometimes coerce them, to grow the crop. The European demand for the dye, however, proved to be unstable, and both creditors and cultivators bore the risk of the market crashes in 1827 and 1847. The peasant discontent in Bengal eventually led to the "Indigo rebellion" in 1859–60 and to the end of indigo production there. In Bihar, however, indigo production continued well into the 20th century; the centre of indigo production there, Champaran district, became the staging ground, in 1917, for Mohandas Karamchand Gandhi's first experiment in non-violent resistance against the British Raj.
https://en.wikipedia.org/wiki?curid=21670823
1,032,515
1,112,529
Sensor nodes often make use of ISM band, which gives free radio, spectrum allocation and global availability. The possible choices of wireless transmission media are radio frequency (RF), optical communication (laser) and infrared. Lasers require less energy , but need line-of-sight for communication and are sensitive to atmospheric conditions. Infrared, like lasers, needs no antenna but it is limited in its broadcasting capacity. Radio frequency-based communication is the most relevant that fits most of the WSN applications. WSNs tend to use license-free communication frequencies: 173, 433, 868, and 915 MHz; and 2.4 GHz. The functionality of both transmitter and receiver are combined into a single device known as a transceiver. Transceivers often lack unique identifiers. The operational states are transmit, receive, idle, and sleep. Current generation transceivers have built-in state machines that perform some operations automatically.
https://en.wikipedia.org/wiki?curid=11711952
1,111,963
1,561,429
The five wind sextets K 213, 240, 252/240a, 253, and 270 have historically been regarded as a series of five "Tafelmusik" (dinner music) works for the Salzburg court. In relation to this, the periodicity in the datings of January and July/August of the years 1775 to 1777, present on the autographs of four of them, is striking. If it is true that the pieces were written as "Tafelmusik" for the Archbishop of Salzburg, then there must have been specific and regularly recurring events every winter and summer accounting for this pattern; so far, though, none have been found. Even though in the "Anstellungsdekret für Joseph Fiala" [the decree of appointment for Joseph Fiala, currently in the "Landesarchiv Salzburg"], issued by the Archbishop on 1 November 1778, one reads "According to which we most graciously receive and welcome the supplicant into our service, subject to his good conduct, as first oboist, in order that the same, both in the Cathedral and at Court or elsewhere as we may require him, should participate diligently in the music and once again bring the wind instruments to that condition which they formerly had, so that they can perform at our command music with wind instruments at table [...]" no documents containing definite groups of musicians or concrete commissions for music have been found. The two summer datings of July and August could perhaps be linked to the semester holidays at the university at which time the students were responsible for the "Finalmusik" played at the summer residence of the Prince Archbishop, amongst others. For the two January dates, however, possible occasions of this kind have not been identified.
https://en.wikipedia.org/wiki?curid=56580111
1,560,543
641,382
Capilano College offered its first bachelor degree, a collaborative degree in music therapy, with the British Columbia Open University in 1990 and added a second music degree in jazz studies in 1992. Business administration degrees were first offered in 1993. That year, Capilano College also conferred its first associate degrees, which are now available to students in a variety of subject areas from Interdisciplinary Arts, Creative Writing, English, Global Stewardship, Psychology, Interdisciplinary Sciences and Biology. The college was authorized by the provincial government in 2003 to become the first college in British Columbia to independently grant applied degrees after the dissolution of the B.C. Open University. In 2004, Capilano College was also named by the provincial government as host of the British Columbia Centre for Tourism Leadership and Innovation, in preparations for the 2010 Winter Olympics. The Centre addressed tourism issues, helped provide tourism education, and was part of the larger British Columbia Tourism and Hospitality Education and Training Consortium. In 2008, the centre was merged into Link BC, an education network for tourism and hospitality with industry organizations which resulted in partnerships with organizations and opportunities for students. In 2008, the provincial government changed Capilano College's designation to Capilano University. CapU also joined the OpenCourseWare consortium, and began the process for accreditation from the Northwest Commission on Colleges and Universities (which it received in 2012).
https://en.wikipedia.org/wiki?curid=1998470
641,043
483,235
The main chemical found in the e-cigarette vapor was propylene glycol. A 2013 study, under close to real-life conditions in an emission test chamber, using a test subject who took six forceful puffs from an e-cigarette, resulted in a high level of propylene glycol released into the air. The next greatest amount in the e-cigarette vapor was nicotine. Possibly, 60–70% of the nicotine is vaporized. E-cigarettes without nicotine is also available. Via nicotine-containing e-cigarettes, nicotine is absorbed through the upper and lower respiratory tract. A greater amount of nicotine is possibly absorbed through oral mucosa and upper airways. The composition of the e-liquid may affect nicotine delivery. E-liquid containing glycerin and propylene glycol delivers nicotine more efficiently than a glycerin-based liquid with the same amount of nicotine. It is believed that propylene glycol vaporizes quicker than glycerin, which subsequently transports a higher amount of nicotine to the user. Vaping appears to give less nicotine per puff than cigarette smoking. Early devices typically delivered low amounts of nicotine than that of traditional cigarettes, but newer devices containing a high amount of nicotine in the liquid may deliver nicotine at amounts similar to that of traditional cigarettes. Similar to traditional cigarettes, e-cigarettes rapidly delivers nicotine to the brain. The peak concentration of nicotine delivered by e-cigarettes is comparable to that of traditional cigarettes. E-cigarettes take longer to reach peak concentration than with traditional cigarettes, but they provide nicotine to the blood quicker than nicotine inhalers. The yield of nicotine users obtain is similar to that of nicotine inhalers. Newer e-cigarette models deliver nicotine to the blood quicker than with older devices. E-cigarettes with more powerful batteries can delivery a higher level of nicotine in the e-cigarette vapor. Some research indicates that experienced e-cigarette users can obtain nicotine levels similar to that of smoking. Some vapers can obtain nicotine levels comparable to smoking, and this ability generally improves with experience. E‐cigarettes users still may be able to obtain similar blood nicotine levels compared with traditional cigarettes, particularly with experienced smokers, but it takes more time to obtain such levels.
https://en.wikipedia.org/wiki?curid=47016616
482,991
1,500,599
Arnold Beckman was approached with the proposal by university president Stanley lkenberry, Lew Barron, and Mort Weir. Beckman estimated that the proposal would require the unprecedented sum of $50 million. On October 5, 1985, the university officially announced that Arnold and Mabel Beckman had made the largest donation ever given to a public university at that time – $40M, with a $10M supplement from the state of Illinois – to build a research center at Illinois that would encourage scientists and engineers from different disciplines to work together. By December 10, 1985, the university had chosen the architectural firm of Smith, Hinchman and Grylls (SH&G) (now SmithGroup) and architectural designer Ralph Youngren for the project. A symbolic ground-breaking ceremony took place October 10, 1986. Theodore L. Brown, who had been actively involved in the project as vice chancellor for research and graduate dean, became the first director of the institute as of March 12, 1987. William T. Greenough and Karl Hess became associate directors, with half-time appointments, in the fall of 1987.
https://en.wikipedia.org/wiki?curid=1268483
1,499,754
824,420
The Chinese company BYD operates battery banks with 40 MWh capacity and 20 MW maximum power in Hong Kong. The large storage is used to cushion load peaks in energy demand and can contribute to the frequency stabilization in the net. The battery is made up of a total of almost 60,000 individual lithium iron phosphate cells, each with 230 amp-hour capacity. The project was started in October 2013 and went online in June 2014. The actual installation of the storage lasted three months. The use of price differences between loading and unloading by day and night electricity, an avoided grid expansion for peak loads and revenue for grid services such as Frequency stabilization enable economic operation without subsidies. There are currently 3 locations for a 1,000 MW peak power to 200 MWh capacity storage power plant to be examined.
https://en.wikipedia.org/wiki?curid=49336757
823,977
1,892,999
DPNSS was developed in the early 1980s by BT, or its forerunner, Post Office Telecommunications in recognition that the emerging Digital Private Circuit Primary Rate product 'Megastream' had to address the market for both data and voice, the latter being significantly greater because of the market for PBXs. At the time, BT dictated what signalling could be used on its leased lines and, whilst it only had a minority interest in the sales of PBXs, was requested by the PBX manufacturers to produce a standard to prevent the creation of a plethora of conflicting PBX protocols being developed. Under the liberalization rules of the day (1979), BT was barred from manufacturing, selling or supplying PBXs of more than 200 extensions. Digital (PCM-based) PBXs were just starting to come into the marketplace with the Plessey PDX (a licensed version of the ROLM CBX) and the GEC SL1 (a licensed version of the Northern Telecom SL1). It was recognised that corporate customers would wish to network these systems across the country. At the time, 'CAS' inter node signaling was slow and inter-register signaling MF5, developed from PSTN signalling protocols, was complex and would not support sufficient features.
https://en.wikipedia.org/wiki?curid=8965
1,891,916
133,426
In 2017, John Goodenough, the co-inventor of Li-ion batteries, unveiled a solid-state battery, using a glass electrolyte and an alkali-metal anode consisting of lithium, sodium or potassium. Later that year, Toyota announced the deepening of its decades-long partnership with Panasonic, including a collaboration on solid-state batteries. Due to its early intensive research and coordinated collaborations with other industry leaders, Toyota holds the most SSB-related patents. However, other car makers independently developing solid-state battery technologies quickly joined a growing list that includes BMW, Honda, Hyundai Motor Company and Nissan. Other automotive-related companies, such as Spark plug maker NGK, have retrofitted their business expertise and models to cater to evolving demand for ceramic-based solid state batteries, in the face of perceived obsolescence of the conventional fossil-fuel paradigm.
https://en.wikipedia.org/wiki?curid=21227685
133,373
1,746,205
For the Philips company as a whole, the era of Frits Philips had made the company part of the world's electronics giants with 350.000 employees in 1970. NatLab grew right along with the company and became a world class research facility. By 1963 a new campus was designed for the facility in Waalre, with space for 3.000 employees (more than any Dutch university). NatLab never grew to quite those numbers though, 2.400 was the record – and that included the foreign branches which had been added in the meantime. The NatLab became a superuniversity where the "best of the best" could do research in practically perfect circumstances (full academic freedom, no time devoted to teaching classes, nearly unlimited budgets and so on). Kees Schouhamer Immink, digital pioneer and one of NatLab's top-scientists, formulated the atmosphere at that time: "We were able to conduct whatever research we found relevant, and had no pre-determined tasks; instead, we received full freedom and support of autonomous research. We went to work, not knowing what we would do that day. This view -or rather ambiguous view- on how research should be conducted, led to amazing inventions as a result. It was an innovation heaven". In 1968 Kees Teer became director.
https://en.wikipedia.org/wiki?curid=28748742
1,745,219
968,615
The term nutraceutical combines the words nutrient and pharmaceutical, originally coined by Stephen DeFelice, who defined nutraceuticals as “food or part of a food that provides medical or health benefits, including the prevention and/or treatment of a disease”. However, currently, there is no conclusive definition of nutraceuticals yet, to distinguish them from other food‐derived categories, such as food (dietary) supplements, herbal products, pre‐ and probiotics, functional foods, and fortified foods. Generally, this term is used to describe any product derived from food sources which is expected to provide health benefits additionally to the nutritional value of daily food. A wide range of nutrients or other substances with nutritional or physiological effects (EU Directive 2002/46/EC) might be present in these products, including vitamins, minerals, amino acids, essential fatty acids, fibres and various plants and herbal extracts. Liposomal nutraceuticals contain bioactive compounds with health-promoting effects. The encapsulation of bioactive compounds in liposomes is attractive as liposomes have been shown to be able to overcome serious hurdles bioactives would otherwise encounter in the gastrointestinal (GI) tract upon oral intake.
https://en.wikipedia.org/wiki?curid=633963
968,105
1,024,372
In June 2016, JR Central announced plans to build a new prototype "N700S" 16-car trainset (with "S" standing for "Supreme") for evaluating new technology and features on the Tokaido and Sanyo Shinkansen lines from March 2018. Developed from the earlier N700 series design, the new train will incorporate a number of new features. Refinements to the ATC and braking systems will enable shorter braking distances in emergencies such as earthquakes. Optimized underfloor equipment layout will allow the same standard design to be used to easily produce 12, 8 and 6-car trainsets in addition to the Tokaido Shinkansen 16-car trainsets. The optimization is intended to make the train more flexible for possible export. The optimization further allows Toshiba SCiB LTO batteries to be installed so that the train can operate at low speed in the event of a disruption to overhead power. Green cars will use active suspension to further improve ride quality, and ordinary-class cars will have AC power outlets for each seat.
https://en.wikipedia.org/wiki?curid=50918664
1,023,839
814,962
The third and last athletics world record at the Olympics came on day four. Poland's Anita Włodarczyk was dominant in the hammer throw, becoming the first woman to throw beyond eighty metres three times in a competition and adding over a metre to her own world record with . Four of her six throws would have been sufficient to win. Another record was in sight for Ruth Jebet in the women's 3000 metres steeplechase, though she missed the mark by a second after slowing to celebrate winning Bahrain's first Olympic gold in any sport. In the women's 400 m Allyson Felix was stopped from winning an historic fifth Olympic gold by Shaunae Miller of the Bahamas, who dove at the line to win the race. Men's 800 metres world record holder David Rudisha defended his 800 m Olympic title, being the first man in over half a century to achieve that. A surprise victory for the hosts came via Thiago Braz da Silva, who added ten centimetres to his previous best to win in an Olympic record of 6.03 m ahead of world record holder Renaud Lavillenie of France. Departing from Olympic traditions, the home crowd booed Lavillenie while he was attempting his final vault and he was booed again at the medal ceremony after comparing his treatment to that of Jesse Owens at the 1936 Summer Olympics in Nazi Germany. The partisan treatment was criticised by da Silva, IOC President Thomas Bach and IAAF president Sebastian Coe, though defended by some as an intrinsic part of Brazilian sporting culture.
https://en.wikipedia.org/wiki?curid=36721624
814,528
245,708
A trans-earth injection burn took place on February 6 at 8:39:04 pm (February 7 at 01:39:04 UTC) taking 350.8 seconds, during "Kitty Hawk" 34th lunar revolution. During the trans-earth coast, two tests of the oxygen system were performed, one to ensure the system would operate properly with low densities of oxygen in the tanks, the second to operate the system at a high flow rate, as would be necessary for the in-flight EVAs scheduled for Apollo 15 and later. Additionally, a navigation exercise was done to simulate a return to Earth following a loss of communications. All were successful. During his rest periods on the voyage, Mitchell conducted ESP experiments without NASA's knowledge or sanction, attempting by prearrangement to send images of cards he had brought with him to four people on Earth. He stated after the mission that two of the four had gotten 51 out of 200 correct (the others were less successful), whereas random chance would have dictated 40.
https://en.wikipedia.org/wiki?curid=1968
245,581
4,984
The entire game was done in a single shot with no camera cuts; there are no loading screens and no fade-to-black between gameplay and cutscenes. Barlog said about forty percent of the team did not originally agree with this decision due to the increased work and production to implement the feature, especially since this was the first time that a one-shot technique was being used for a three-dimensional AAA game. This meant Barlog had no examples to show if this would work or was a good idea. (The only other game to fully utilize this technique was the indie game "", which also began development in 2014 and was released eight months before "God of War".) After the game was finished and the team got to play through it, Barlog said they finally understood his vision and said it was a feature they should use from now on. Barlog had originally pitched the idea for a one-shot camera while he was at Crystal Dynamics working on 2013's "Tomb Raider", but he was turned down. Sony, however, was much more supportive of Barlog's creative ideas. Furthermore, Barlog and lead level designer Rob Davis were also influenced by the "Resident Evil" series, particularly "Resident Evil 4"s "combination of poised camera exploration and scavenging" and "Resident Evil 7"s "strong vision" from a team making "bold decisions, and actually hav[ing] the audience follow them." Barlog noted how there was initial disagreement over the camera distance. He wanted it close whereas the combat team wanted it further away, like the "Assassin's Creed" and "" games; he eventually convinced the team to go with a close camera.
https://en.wikipedia.org/wiki?curid=50810460
4,982
995,712
In the United States, science education was a scatter of subjects prior to its standardization in the 1890s. The development of a science curriculum emerged gradually after extended debate between two ideologies, citizen science and pre-professional training. As a result of a conference of thirty leading secondary and college educators in Florida, the National Education Association appointed a Committee of Ten in 1892, which had authority to organize future meetings and appoint subject matter committees of the major subjects taught in secondary schools. The committee was composed of ten educators and chaired by Charles Eliot of Harvard University. The Committee of Ten appointed nine conferences committees: Latin; Greek; English; Other Modern Languages; Mathematics; History; Civil Government and Political Economy; physics, astronomy, and chemistry; natural history; and geography. Each committee was composed of ten leading specialists from colleges, normal schools, and secondary schools. Committee reports were submitted to the Committee of Ten, which met for four days in New York City, to create a comprehensive report. In 1894, the NEA published the results of work of these conference committees.
https://en.wikipedia.org/wiki?curid=181889
995,195
1,468,810
The school remained at its location in London during World War II despite the risk of bombings and an offer for accommodation by Queens' College, Cambridge. The number of students and staff fell as a result of the war, with some staff being called upon for military service. After 1941 and continuing until the end of the war, regular instruction ceased and the school instead started providing short courses in tropical medicine to nurses and doctors of the Allied Forces. On 10 May 1941, a bomb struck the building and caused a fire which was only put out the following morning due to a lack of firemen. Only four people were present at the time and remained unharmed, however, around a sixth of the building was damaged, with particularly the side facing Malet Street sustaining extensive damage. Although the damage was only fully repaired seven years later, teaching of short courses resumed the Monday after the bombing.
https://en.wikipedia.org/wiki?curid=531365
1,467,986
380,953
In France, Le Chatelier translated Taylor's work and introduced scientific management throughout government owned plants during World War I. This influenced the French theorist Henri Fayol, whose 1916 "Administration Industrielle et Générale" emphasized organizational structure in management. In the classic "General and Industrial Management", Fayol wrote that "Taylor's approach differs from the one we have outlined in that he examines the firm from the 'bottom up.' He starts with the most elemental units of activity – the workers' actions – then studies the effects of their actions on productivity, devises new methods for making them more efficient, and applies what he learns at lower levels to the hierarchy " He suggests that Taylor has staff analysts and advisors working with individuals at lower levels of the organization to identify the ways to improve efficiency. According to Fayol, the approach results in a "negation of the principle of unity of command." Fayol criticized Taylor's functional management in this way: In "Shop Management", Taylor said « ... the most marked outward characteristics of functional management lies in the fact that each workman, instead of coming in direct contact with the management at one point only, ... receives his daily orders and help from eight different bosses... these eight were (1) route clerks, (2) instruction card men, (3) cost and time clerks, (4) gang bosses, (5) speed bosses, (6) inspectors, (7) repair bosses, and the (8) shop disciplinarian. » Fayol said that this was an unworkable situation and that Taylor must have reconciled the differences in some way not described in Taylor's works.
https://en.wikipedia.org/wiki?curid=204995
380,758
1,928,762
The standard of training and actual procedures and requirements for OEC meet and exceed those of the first responder basic course and the curriculum contains many of the skills identified in the US Department of Transportation (DOT) 1994 "EMT-Basic National Standard Curriculum", although training is specific to needs in outdoor scenarios, such as self-reliance and individual skills. This instead of the EMT curriculum focusing on urban environments with immediate access to additional resources such as EMT partners and an ambulance. While the OEC curriculum includes a skill set and fund of knowledge that exceeds those of the emergency medical responder (EMR) program, it does not include all the knowledge needed for an EMT program since it emphasizes caring for patients in the wilderness, with a focus on snow-sports pathology. Because of this, OEC technicians typically have a similar standards of training compared to EMT-basic responders, albeit several different focuses of the training: with OEC devoting a larger portion of the curriculum to musculoskeletal injuries, splinting, bandaging, and environmental emergencies and devoting comparatively less time on patients with a medical based issue. OEC technicians are first responders, not definitive medical care, and have the knowledge to care for, transport, and "treat" patients, but not to diagnose them or provide terminal support or invasive therapies.
https://en.wikipedia.org/wiki?curid=2471678
1,927,657
598,773
This is what led to the original Clathrate gun hypothesis, and in 2008 the United States Department of Energy National Laboratory system and the United States Geological Survey's Climate Change Science Program both identified potential clathrate destabilization in the Arctic as one of four most serious scenarios for abrupt climate change, which have been singled out for priority research. The USCCSP released a report in late December 2008 estimating the gravity of this risk. A 2012 study of the effects for the original hypothesis, based on a coupled climate–carbon cycle model (GCM) assessed a 1000-fold (from <1 to 1000 ppmv) methane increase—within a single pulse, from methane hydrates (based on carbon amount estimates for the PETM, with ~2000 GtC), and concluded it would increase atmospheric temperatures by more than 6 °C within 80 years. Further, carbon stored in the land biosphere would decrease by less than 25%, suggesting a critical situation for ecosystems and farming, especially in the tropics. Another 2012 assessment of the literature identifies methane hydrates on the Shelf of East Arctic Seas as a potential trigger.
https://en.wikipedia.org/wiki?curid=5069503
598,468
1,433,577
In theoretical physics, functional renormalization group (FRG) is an implementation of the renormalization group (RG) concept which is used in quantum and statistical field theory, especially when dealing with strongly interacting systems. The method combines functional methods of quantum field theory with the intuitive renormalization group idea of Kenneth G. Wilson. This technique allows to interpolate smoothly between the known microscopic laws and the complicated macroscopic phenomena in physical systems. In this sense, it bridges the transition from simplicity of microphysics to complexity of macrophysics. Figuratively speaking, FRG acts as a microscope with a variable resolution. One starts with a high-resolution picture of the known microphysical laws and subsequently decreases the resolution to obtain a coarse-grained picture of macroscopic collective phenomena. The method is nonperturbative, meaning that it does not rely on an expansion in a small coupling constant. Mathematically, FRG is based on an exact functional differential equation for a scale-dependent effective action.
https://en.wikipedia.org/wiki?curid=26271144
1,432,773
348,943
All bovids mate at least once a year, and smaller species may even mate twice. Mating seasons occur typically during the rainy months for most bovids. As such, breeding might peak twice in the equatorial regions. The sheep and goats exhibit remarkable seasonality of reproduction, in the determination of which the annual cycle of daily photoperiod plays a pivotal role. Other factors that have a significant influence on this cycle include the temperature of the surroundings, nutritional status, social interactions, the date of parturition and the lactation period. A study of this phenomenon concluded that goats and sheep are short-day breeders. Mating in most sheep breeds begins in summer or early autumn. Mating in sheep is also affected by melatonin, that advances the onset of the breeding season; and thyroxine, that terminates the breeding season. Estrus lasts for at most a day in bovids, with the exception of bovines and tragelaphines. Except for the hartebeest and the topi, all bovids can detect estrus in females by testing the urine using the vomeronasal organ. Once the male is assured that the female is in estrus, he begins courtship displays; these displays vary greatly from the elaborate marches among gregarious species to the fervent licking of female genitalia among solitary species. Females, initially not receptive, ultimately mates with the male which has achieved dominance over others. Receptiveness is expressed by permission for mounting by the male and setting aside the tail by the female. Copulation generally takes a few seconds.
https://en.wikipedia.org/wiki?curid=241281
348,761
153,909
Laser holography, in its original "pure" form of the photographic "transmission hologram", is the only technology yet created which can reproduce an object or scene with such complete realism that the reproduction is visually indistinguishable from the original, given the original lighting conditions. It creates a light field identical to that which emanated from the original scene, with parallax about all axes and a very wide viewing angle. The eye differentially focuses objects at different distances and subject detail is preserved down to the microscopic level. The effect is exactly like looking through a window. Unfortunately, this "pure" form requires the subject to be laser-lit and completely motionless—to within a minor fraction of the wavelength of light—during the photographic exposure, and laser light must be used to properly view the results. Most people have never seen a laser-lit transmission hologram. The types of holograms commonly encountered have seriously compromised image quality so that ordinary white light can be used for viewing, and non-holographic intermediate imaging processes are almost always resorted to, as an alternative to using powerful and hazardous pulsed lasers, when living subjects are photographed.
https://en.wikipedia.org/wiki?curid=201460
153,839
1,981,259
White has been active in efforts to increase diversity in the geosciences throughout her career. White coordinated the Minority Participation in the Earth Sciences program (MPES) with the US Geological Survey from 1988 to 1995. She led programs for the National Science Foundation METALS (Minority Education Through Traveling and Learning in the Sciences) program from 2010 to 2015, where she partnered with faculty from the University of Texas at El Paso, the University of New Orleans, and Purdue University to bring ethnically diverse high school students on experiential education trips to geologic field sites across the United States. Since 2017, she has served as a Co-PI on the National Science Foundation FIELD program (Fieldwork Inspiring Expanded Leadership and Diversity). The program's goal is to create more accessible, culturally sensitive, and inclusive field experiences, particularly for students underrepresented in the geosciences. In 2000, White was appointed Chair of the Geological Society of America committee on Minorities and Women in the Geosciences. In 2019 White became the Chair of the Diversity and Inclusion Advisory Committee of the American Geophysical Union. White received the first Bromery Award from the Geological Society of America in 2008 in recognition of her work with minorities in the field.
https://en.wikipedia.org/wiki?curid=53290732
1,980,120
1,644,137
Ornithodoros savignyi, known as sand tampan, African eyed tampan or Kalahari sand tampan, is one of some 37 species in the genus "Ornithodoros" and is a soft tick with a leathery, mammillated integument, causing paralysis and tampan toxicosis, two unrelated conditions. The sand tampan is an ectoparasite on humans, their livestock and wild animals, including birds and bats. Occurring in semi-desert areas of Africa, Saudi Arabia and other parts of the Persian Gulf, India, Sri Lanka and into Asia, it is able to survive for lengthy periods without feeding, spending most of its life burrowed under sand or loose soil, often in wait for animals that rest or sleep under trees or in the lee of rocks, but also in places where people or their animals congregate such as marketplaces, places of worship, cattle kraals and village squares. The timing of its activity is geared to coincide with that of potential hosts, but hot sunny conditions are usually avoided. Because of its habit of feeding and dropping from its host, adult dispersal is limited, whereas larvae may remain attached to their hosts for several days. During its life cycle it will feed on multiple hosts between moults.
https://en.wikipedia.org/wiki?curid=49451637
1,643,210
298,601
On 28 June 2011, FAO and its members countries officially recognized global freedom from the deadly cattle virus. On this day, the FAO Conference, the highest body of the UN agency, adopted a resolution declaring the eradication of rinderpest. The resolution also called on the world community to follow up by ensuring that samples of rinderpest viruses and vaccines be kept under safe laboratory conditions and that rigorous standards for disease surveillance and reporting be applied. "While we are celebrating one of the greatest successes for FAO and its partners, I wish to remind you that this extraordinary achievement would not have been possible without the joint efforts and strong commitments of governments, the main organizations in Africa, Asia and Europe, and without the continuous support of donors and international institutions", FAO Director-General Jacques Diouf commented.
https://en.wikipedia.org/wiki?curid=501921
298,441
1,031,368
On 22 November 2013, the South Korean state news agency said that the ROK Air Force will purchase 40 F-35A Lightning II fighters for its F-X III requirement. There is an option to buy 20 more aircraft. Deliveries are to begin in 2018, and Lockheed claims it can configure the F-35 for the Block 3F software by then. Despite the F-35 being chosen, South Korea will also obtain 20 unspecified fighters, which leave room for the other F-X III competitors to reach a deal for their aircraft. But Yang Uk of the Korea Defense and Security Forum stated that it was unlikely the remaining 20 fighters beyond the 40 F-35s would be anything other than more F-35s. The F-35's stealth technology and electronic warfare capabilities were chosen to enhance South Korea's "kill chain" system to preemptively detect and destroy North Korean nuclear and missile threats. If a contract is signed in 2014, the 40 Lightning IIs will be delivered from 2018 to 2021. The remaining 20 fighters, be they other planes or more F-35s, will be purchased by 2023. The choice of whether to buy a different aircraft will be based on operational capabilities, changing security situations, and aviation technology development.
https://en.wikipedia.org/wiki?curid=40890966
1,030,832
452,955
Though no skull remains have been found for "Ichthyovenator", all known spinosaurids had elongated, low, narrow snouts that allowed them to reach far for food and to quickly close their jaws in a manner similar to modern crocodilians. The tips of spinosaurids' upper and lower jaws fanned out into a rosette-like shape that bore long teeth, behind which there was a notch in the upper jaw; this formed a natural trap for prey. Like those of other spinosaurids, "Ichthyovenator"s straight, unserrated teeth would have been suitable for impaling and capturing small animals and aquatic prey. This type of jaw and tooth morphology, which is also observed in today's gharials and other fish-eating predators, has led many palaeontologists to believe spinosaurids were largely piscivorous (as implied by "Ichthyovenator"s name). This is also evidenced by the discovery of "Scheenstia" fish scales in the stomach cavity of one "Baryonyx" skeleton and a "Spinosaurus" snout that was found with a vertebra from the sclerorynchid fish "Onchopristis" embedded in it. A more generalist diet has also been proposed for spinosaurs, based on fossils such as the bones of a juvenile iguanodontid that was also found in the same "Baryonyx" specimen, an "Irritator" tooth embedded in the vertebrae of a pterosaur, and tooth crowns from "Siamosaurus" that were found in association with sauropod dinosaur bones. It is thus likely that spinosaurids were also scavengers or hunters of larger prey. Though no limb bones are known from "Ichthyovenator", all known spinosaurids had well-built arms with enlarged thumb claws, which they likely used to hunt and process prey.
https://en.wikipedia.org/wiki?curid=35587737
452,734
1,272,758
Looking at the environmental factors of autistic spectrum disorder in rodents helps us to understand the neuropathology of the disorder which can be compared to humans. Environmental factors have been studied in animal rodent models and have been seen to influence brain development and play a role in CNS neuropathology. For example, one study found that a possible environmental contributor to autism may be agents like prenatal exposure to air pollution or any birth difficulty leading to periods of oxygen deprivation to the brain, which alter serotonin levels in early development of the rodent. This study also found that if the parent exhibits autism, the offspring are more likely to be autistic as well and that since older men have a higher number of DNA mutations in their sperm, these mutations are usually found in the offspring of older men. The last major result that this study observed was that environmental factors during and after pregnancy may have an impact on the immune system as well as the developing nervous system and plays a part in creating neurodevelopmental disorders like autism. Since environmental factors can occur at any time during the developmental process, there is much variability in the neural and behavioral phenotype of autism. The environment can cause unknown changes in brain development of rodents because they don't all live in the same habitat and therefore might develop different changes to their brain than what is expected.
https://en.wikipedia.org/wiki?curid=41328472
1,272,067
857,228
Chromatophores are also used as a biomarker of blindness in cold-blooded species, as animals with certain visual defects fail to background adapt to light environments. Human homologues of receptors that mediate pigment translocation in melanophores are thought to be involved in processes such as appetite suppression and tanning, making them attractive targets for drugs. Therefore, pharmaceutical companies have developed a biological assay for rapidly identifying potential bioactive compounds using melanophores from the African clawed frog. Other scientists have developed techniques for using melanophores as biosensors, and for rapid disease detection (based on the discovery that pertussis toxin blocks pigment aggregation in fish melanophores). Potential military applications of chromatophore-mediated colour changes have been proposed, mainly as a type of active camouflage, which could as in cuttlefish make objects nearly invisible.
https://en.wikipedia.org/wiki?curid=190770
856,773
799,713
Euan MacKie has supported Thom's analysis, to which he added an archaeological context by comparing Neolithic Britain to the Mayan civilization to argue for a stratified society in this period. To test his ideas he conducted a couple of excavations at proposed prehistoric observatories in Scotland. Kintraw is a site notable for its four-meter high standing stone. Thom proposed that this was a foresight to a point on the distant horizon between Beinn Shianaidh and Beinn o'Chaolias on Jura. This, Thom argued, was a notch on the horizon where a double sunset would occur at midwinter. However, from ground level, this sunset would be obscured by a ridge in the landscape, and the viewer would need to be raised by two meters: another observation platform was needed. This was identified across a gorge where a platform was formed from small stones. The lack of artifacts caused concern for some archaeologists and the petrofabric analysis was inconclusive, but further research at Maes Howe and on the Bush Barrow Lozenge led MacKie to conclude that while the term 'science' may be anachronistic, Thom was broadly correct upon the subject of high-accuracy alignments.
https://en.wikipedia.org/wiki?curid=2864
799,287
1,533,668
In 1980, Stevens joined the Army under their split option training program and conducted basic training at Fort Dix, New Jersey and advanced individual training at Fort Sam Houston, Texas. While engaged in his military service, Stevens entered the University of Southern Maine in the Computer Science program in 1981. However, an enthusiastic professor (John Ricci) converted him to the study of Chemistry. He spent two summers working as an intern at the Brookhaven National Laboratory in Long Island with Professor Ricci, and Drs. Thomas Koetzle and Dick McMullan, where he first learned how to determine the molecular structure of compounds by X-ray and neutron diffraction. While there he also met a University of Southern California research team led by Dr. Robert Bau; after he obtained a Bachelor of Science degree in chemistry at USM, he entered the University of Southern California in pursuit of a Doctor of Philosophy degree in Chemistry working with Professor Robert Bau and Nobel Laureate Professor, George Olah. He completed his Ph.D. in 26 months, graduating in 1988.
https://en.wikipedia.org/wiki?curid=13916707
1,532,800
99,609
It is important to be able to distinguish artifacts from genuine brain activity in order to prevent incorrect interpretations of EEG data. General approaches for the removal of artifacts from the data are, prevention, rejection and cancellation. The goal of any approach is to develop methodology capable of identifying and removing artifacts without affecting the quality of the EEG signal. As artifact sources are quite different the majority of researchers focus on developing algorithms that will identify and remove a single type of noise in the signal. Simple filtering using a notch filter is commonly employed to reject components with a 50/60 Hz frequency. However such simple filters are not an appropriate choice for dealing with all artifacts, as for some, their frequencies will overlap with the EEG frequencies. Regression algorithms have a moderate computation cost and are simple. They represented the most popular correction method up until the mid 1990's when they were replaced by "blind source separation" type methods. Regression algorithms work on the premise that all artifacts are comprised by one or more reference channels. Subtracting these reference channels from the other contaminated channels, in either the time or frequency domain, by estimating the impact of the reference channels on the other channels, would correct the channels for the artifact. Although the requirement of reference channels ultimately lead to this class of algorithm being replaced, they still represent the benchmark to which modern algorithms are evaluated against.
https://en.wikipedia.org/wiki?curid=21402632
99,566
983,037
While 16S hypervariable regions can vary dramatically between bacteria, the 16S gene as a whole maintains greater length homogeneity than its eukaryotic counterpart (18S ribosomal RNA), which can make alignments easier. Additionally, the 16S gene contains highly conserved sequences between hypervariable regions, enabling the design of universal primers that can reliably produce the same sections of the 16S sequence across different taxa. Although no hypervariable region can accurately classify all bacteria from domain to species, some can reliably predict specific taxonomic levels. Many community studies select semi-conserved hypervariable regions like the V4 for this reason, as it can provide resolution at the phylum level as accurately as the full 16S gene. While lesser-conserved regions struggle to classify new species when higher order taxonomy is unknown, they are often used to detect the presence of specific pathogens. In one study by Chakravorty et al. in 2007, the authors characterized the V1–V8 regions of a variety of pathogens in order to determine which hypervariable regions would be most useful to include for disease-specific and broad assays. Amongst other findings, they noted that the V3 region was best at identifying the genus for all pathogens tested, and that V6 was the most accurate at differentiating species between all CDC-watched pathogens tested, including anthrax.
https://en.wikipedia.org/wiki?curid=14075787
982,524
14,240
AD is usually clinically diagnosed based on the person's medical history, history from relatives, and behavioral observations. The presence of characteristic neurological and neuropsychological features and the absence of alternative conditions supports the diagnosis. Advanced medical imaging with computed tomography (CT) or magnetic resonance imaging (MRI), and with single-photon emission computed tomography (SPECT) or positron emission tomography (PET), can be used to help exclude other cerebral pathology or subtypes of dementia. Moreover, it may predict conversion from prodromal stages (mild cognitive impairment) to Alzheimer's disease. FDA-approved radiopharmaceutical diagnostic agents used in PET for Alzheimer's disease are florbetapir (2012), flutemetamol (2013), florbetaben (2014), and flortaucipir (2020). Because many insurance companies in the United States do not cover this procedure, its use in clinical practice is largely limited to clinical trials .
https://en.wikipedia.org/wiki?curid=18914017
14,235
313,985
Shore-based AIS network systems are now being built up around the world. One of the biggest fully operational, real time systems with full routing capability is in China. This system was built between 2003 and 2007 and was delivered by Saab TranspondereTech. The entire Chinese coastline is covered with approximately 250 base stations in hot-standby configurations including 70 computer servers in three main regions. Hundreds of shore-based users, including about 25 vessel traffic service (VTS) centers, are connected to the network and are able to see the maritime picture, and can also communicate with each ship using SRMs (Safety Related Messages). All data are in real time. The system was designed to improve the safety and security of ships and port facilities. It is also designed according to an SOA architecture with socket based connection and using IEC AIS standardized protocol all the way to the VTS users. The base stations have hot-standby units (IEC 62320-1) and the network is the third generation network solution.
https://en.wikipedia.org/wiki?curid=1825702
313,816
1,968,160
In addition to protein-selectivity, TBA also shows ion preference. A potassium ion helps TBA fold into a G-quadruplex structure, which results in a significant positive band at 295 nm and a negative band at 270 nm on its circular dichroism (CD) spectrum. Also, potassium ion improves the thermal stability of TBA. The melting temperature of TBA's G-quadruplex (measuring the intensity change of the peak at 295 nm by CD) in the presence of sodium ion and potassium are 24 and 53 ℃, respectively. Compared with sodium, potassium ion fits perfectly to the cavity between two G-tetrad plane and is coordinately bound to four O6 atoms in each plane. This enhances the structural stability of TBA. In contrast, due to its small size, sodium ion can only interacts with four rather than eight oxygen atoms of two G-tetrad planes, and accordingly has two alternative position in the cavity. Thrombin shows similar influence as potassium ion. In the ion-deficient condition, thrombin helps TBA form into a stable G-quadruplex structure from a randomized coil, which results in conformational change. Some groups use this property to develop aptamer-based thrombin sensors. For this purpose, TBA is usually mounted with an additional sequence with a FRET (Förster resonance energy transfer) pair to form a transient duplex structure. Once the TBA part interacts with thrombin, the conformational change would change the distance between the FRET pair and lead to a fluorescent output. This approach provides nano-molar sensitivity and is capable of sensing thrombin in the spiked serum.
https://en.wikipedia.org/wiki?curid=42635554
1,967,030
1,624,802
In "Recherches chimiques sur la Végétation" (1804) Saussure showed that the increase in the mass of a plant as it grows could not be due only to the uptake of CO, but was also a result of the incorporation of water into plant dry matter. He demonstrated this by showing that plants grown with their roots in water and their shoots in an atmosphere of ordinary air with added CO increased in dry weight by an amount much greater than could be attributed to the assimilation of the CO gas available to them.  Plainly, the weight increase had come from the water. In addition, Saussure demonstrated that plants obtain their carbon from the carbon dioxide in the atmosphere, not through uptake from humus in the soil, as his immediate predecessors in photosynthesis research had generally believed. He also showed that plants require mineral nutrients, which they take up from the soil, and nitrogen, although he did not trace the source of plant nitrogen definitively to the soil. Saussure's finding that the source of plant minerals was the soil disproved the widely held view that mineral substances in plants arose from vague "transmutations" within the plant. His work enabled completion of the basic, overall chemical equation of photosynthesis, according to which carbon dioxide and water, in the presence of light, are converted by a green plant into fixed carbon (such as glucose, food for the plant), with gaseous oxygen released as a byproduct. Based on his accomplishments in plant chemistry and physiology, Saussure is considered the last of the major early pioneers of photosynthesis research, completing the work begun by his predecessors, including Jan Baptist van Helmont, Joseph Priestley, Jan Ingenhousz, and Jean Senebier.
https://en.wikipedia.org/wiki?curid=1524053
1,623,886
1,238,287
Kean discusses how elements deceive. He tells of the deaths of NASA technicians during a simulation. On March 19, 1981, five technicians were working on a simulation spacecraft at NASA's Cape Canaveral headquarters for a routine system check. They were cleared to enter a spacecraft area but two seconds after they did, they all collapsed and when the rescue team arrived, only three were saved. The rest died of anoxia due to a pure-nitrogen atmosphere. The author then moves on to talk about titanium and its many uses in implants to avoid infection and its deceitful methods to effect bones' growth onto it. Kean then goes over beryllium. He states that when ingested it can seem very sweet even though it is toxic. It also causes acute beryllium disease. An example of someone who had this disease because he worked a lot with this element is Enrico Fermi. When he died at the age of 53 of pneumonia, his lungs were completely shredded due to the beryllium. Kean finishes this chapter by discussing Iodine and its health benefits, India's blindness to the benefits of Iodine and he discusses Gandhi's salt march.
https://en.wikipedia.org/wiki?curid=46736756
1,237,621
1,751
In January 1977, four years prior to becoming president, Ronald Reagan bluntly stated, in a conversation with Richard V. Allen, his basic expectation in relation to the Cold War. "My idea of American policy toward the Soviet Union is simple, and some would say simplistic," he said. "It is this: We win and they lose. What do you think of that?" In 1980, Ronald Reagan defeated Jimmy Carter in the 1980 presidential election, vowing to increase military spending and confront the Soviets everywhere. Both Reagan and new British Prime Minister Margaret Thatcher denounced the Soviet Union and its ideology. Reagan labeled the Soviet Union an "evil empire" and predicted that Communism would be left on the "ash heap of history," while Thatcher inculpated the Soviets as "bent on world dominance." In 1982, Reagan tried to cut off Moscow's access to hard currency by impeding its proposed gas line to Western Europe. It hurt the Soviet economy, but it also caused ill will among American allies in Europe who counted on that revenue. Reagan retreated on this issue.
https://en.wikipedia.org/wiki?curid=325329
1,751
797,825
The knowledge contained in tablebases affords the computer a tremendous advantage in the endgame. Not only can computers play perfectly within an endgame, but they can simplify to a winning tablebase position from a more complicated endgame. For the latter purpose, some programs use "bitbases" which give the game-theoretical value of positions without the number of moves until conversion or mate – that is, they only reveal whether the position is won, lost or draw. Sometimes even this data is compressed and the bitbase reveals only whether a position is won or not, making no difference between a lost and a drawn game. Shredderbases, for example, used by the Shredder program, are a type of bitbase, which fits all 3-, 4- and 5-piece bitbases in 157 MB. This is a mere fraction of the 7.05 GB that the Nalimov tablebases require. Some computer chess experts have observed practical drawbacks to the use of tablebases. In addition to ignoring the fifty-move rule, a computer in a difficult position might avoid the losing side of a tablebase ending even if the opponent cannot practically win without himself knowing the tablebase. The adverse effect could be a premature resignation, or an inferior line of play that loses with less resistance than a play without tablebase might offer.
https://en.wikipedia.org/wiki?curid=2658308
797,400
2,129,123
The membership of the Farmers and Settler's Association, his lack of education and his support for public education informed Drummond's views. The Queensland Northern Separation Movement, campaigning for improved education in the region north, was a further influence. Agitation by the New England New State Movement had led to the formation of the Cohen Commission into the New States in 1923/4. Some of the Commission's recommendations included the creation of a country teachers' college, an external teaching university and greater local influence in education. Drummond was particularly influenced by evidence from William Holman, who stated "before you can have decentralisation you must first teach the teachers". Historian Belshaw believes that it was probably Drummond, drawing inspiration from the Commission, who coined the phrase "A Country College for Country Kids" and certainly used it effectively. It was Drummond who influenced the concept of country teachers' colleges and universities, written into the policy speech and presented at West Wyalong on 13 September 1927 by Country Party Leader, Ernest Buttenshaw. Drummond's appointment as Minister for Education in the first National-Country Party coalition was therefore not surprising. The College's establishment within five months of the election bears testimony to the power of the Northern interest groups and Drummond's ministerial influence. The main interest group influencing the site of the Teachers' College was the New State Movement, of which Drummond was a founding member.
https://en.wikipedia.org/wiki?curid=57539511
2,127,900
581,387
This specific theory of quantum consciousness was developed by neuroscientist Karl Pribram initially in collaboration with physicist David Bohm building on the initial theories of holograms originally formulated by Dennis Gabor. It describes human cognition by modeling the brain as a holographic storage network. Pribram suggests these processes involve electric oscillations in the brain's fine-fibered dendritic webs, which are different from the more commonly known action potentials involving axons and synapses. These oscillations are waves and create wave interference patterns in which memory is encoded naturally, and the wave function may be analyzed by a Fourier transform. Gabor, Pribram and others noted the similarities between these brain processes and the storage of information in a hologram, which can also be analyzed with a Fourier transform. In a hologram, any part of the hologram with sufficient size contains the whole of the stored information. In this theory, a piece of a long-term memory is similarly distributed over a dendritic arbor so that each part of the dendritic network contains all the information stored over the entire network. This model allows for important aspects of human consciousness, including the fast associative memory that allows for connections between different pieces of stored information and the non-locality of memory storage (a specific memory is not stored in a specific location, i.e. a certain cluster of neurons).
https://en.wikipedia.org/wiki?curid=1896271
581,089
1,756,918
Nitrogen, like carbon, shows characteristic isotope shifts, depending on the fixation pathway, that can be used to assess certain paleolimnological indices. However, also like carbon, a variety of factors go into the nitrogen isotope composition of lake sediments, which makes assessments derived from this method somewhat speculative. In particular, "δ"N values can vary based on productivity levels in aquatic ecosystems. A study that reconstructed lake conditions of Lago Taypi in Cordillera Real, Bolivia, found that when Nitrogen served as the limiting nutrient, levels of nitrogen-fixating algae significantly rose. These algal groups produce "δ"N values that closely aligned with those of atmospheric N, which allowed the researchers to draw conclusions about nutrient cycling and productivity in the lake by examining specific nitrogen isotopes of their sediment cores. Furthermore, in examinations of historic eutrophication trends, "δ"N values can be used to differentiate human-driven nitrogen loads from natural inputs, allowing researchers to track the impact of agriculture on the basis of historic nitrogen trends. Human and animal waste, as well as synthetic fertilizers, have diagnostic isotopic shifts that allow researchers to characterize specific nitrogen inputs and track potential human-induced changes in nutrient flux, using "δ"N measurements.
https://en.wikipedia.org/wiki?curid=4635545
1,755,927
9,892
On July 12, 2013, a fire started on an empty Ethiopian Airlines 787 parked at Heathrow Airport before it was extinguished by the airport fire and rescue service. No injuries were reported. The fire caused extensive heat damage to the aircraft. The FAA and NTSB sent representatives to assist in the investigation. The initial investigation found no direct link with the aircraft's main batteries. Further investigations indicated that the fire was due to lithium-manganese dioxide batteries powering an emergency locator transmitter (ELT). The UK Air Accidents Investigation Branch (AAIB) issued a special bulletin on July 18, 2013, requesting the US FAA ensure that the locator is removed or disconnected in Boeing 787s and to review the safety of lithium battery-powered ELT systems in other aircraft types. On August 19, 2015, the Associated Press reported that the fire was started by a short circuit caused by crossed wires located under the battery. The Air Accidents Investigation Branch's investigators recommended that "the U.S. Federal Aviation Administration, together with similar bodies in Europe and Canada, should conduct a review of equipment powered by lithium metal batteries to ensure they have 'an acceptable level of circuit protection.'"
https://en.wikipedia.org/wiki?curid=307133
9,888
1,450,354
Starting from simple examples in the 1960s, the conjugate heat transfer methods have become a more powerful tool for modeling and investigating nature phenomena and engineering systems in different areas ranging from aerospace and nuclear reactors to thermal goods treatment and food processing, from complex procedures in medicine to atmosphere/ocean thermal interaction in meteorology, and from relatively simple units to multistage, nonlinear processes. A detailed review of more than 100 examples of conjugate modeling selected from a list of 200 early and modern publications shows that conjugate methods is now used extensively in a wide range of applications. That also is confirmed by numerous results published after this book appearance (2009) that one may see, for example, at the Web of Science. The applications in specific areas of conjugate heat transfer at periodic boundary conditions and in exchanger ducts are considered in two recent books.
https://en.wikipedia.org/wiki?curid=44238805
1,449,537
1,056,540
The technological and physical aspects of the Finnish BNCT program have been described in considerable detail by Savolainen et al. A team of clinicians led by Heikki Joensuu and Leena Kankaanranta and nuclear engineers led by Iro Auterinen and Hanna Koivunoro at the Helsinki University Central Hospital and VTT Technical Research Center of Finland have treated approximately 200+ patients with recurrent malignant gliomas (glioblastomas) and head and neck cancer who had undergone standard therapy, recurred, and subsequently received BNCT at the time of their recurrence using BPA as the boron delivery agent. The median time to progression in patients with gliomas was 3 months, and the overall MeST was 7 months. It is difficult to compare these results with other reported results in patients with recurrent malignant gliomas, but they are a starting point for future studies using BNCT as salvage therapy in patients with recurrent tumors. Due to a variety of reasons, including financial, no further studies have been carried out at this facility, which has been decommissioned. However, a new facility for BNCT treatment has been installed using an accelerator designed and fabricated by Neutron Therapeutics. This accelerator was specifically designed to be used in a hospital, and the BNCT treatment and clinical studies will be carried out there after dosimetric studies have been completed in 2021. Both Finnish and foreign patients are expected to be treated at the facility.
https://en.wikipedia.org/wiki?curid=32637211
1,055,992
1,996,846
Roger Yate Stanier (22 October 1916 – 29 January 1982) was a Canadian microbiologist who was influential in the development of modern microbiology. As a member of the Delft School and former student of C. B. van Niel, he made important contributions to the taxonomy of bacteria, including the classification of blue-green algae as cyanobacteria. In 1957, he and co-authors wrote "The Microbial World", an influential microbiology textbook which was published in five editions over three decades. In the course of 24 years at the University of California, Berkeley he reached the rank of professor and served as chair of the Department of Bacteriology before leaving for the Pasteur Institute in 1971. He received several awards over the course of his career, including the Leeuwenhoek Medal. He was a Fellow of the Royal Society and a Foreign Associate of the National Academy of Sciences and the Légion d’Honneur.
https://en.wikipedia.org/wiki?curid=33811818
1,995,703
1,778,406
Comparative genomic hybridization (CGH), derived from FISH, is used to compare variations in copy number between a biological sample and a reference. CGH was originally developed to observe chromosomal aberrations in tumour cells. This method uses two genomes, a sample and a control, which are labeled fluorescently to distinguish them. In CGH, DNA is isolated from a tumour sample and biotin is attached. Another labelling protein, digoxigenin, is attached to the reference DNA sample. The labelled DNA samples are co-hybridized to probes during cell division, which is the most informative time for observing copy number variation. CGH uses creates a map that shows the relative abundance of DNA and chromosome number. By comparing the fluorescence in a sample compared to a reference, CGH can point to gains or losses of chromosomal regions. CGH differs from FISH because it does not require a specific target or previous knowledge of the genetic region being analyzed. CGH can also scan an entire genome relatively quickly for various chromosome imbalances, and this is helpful in patients with underlying genetic issues and when an official diagnosis is not known. This often occurs with hematological cancers.
https://en.wikipedia.org/wiki?curid=8036853
1,777,404
146,332
Interest has been expressed in Western Canada, where CANDU reactors are being considered as heat and electricity sources for the energy-intensive oil sands extraction process, which currently uses natural gas. Energy Alberta Corporation announced 27 August 2007 that they had applied for a licence to build a new nuclear plant at Lac Cardinal (30 km west of the town of Peace River, Alberta), with two ACR-1000 reactors going online in 2017 producing 2.2 gigawatts (electric). A 2007 parliamentary review suggested placing the development efforts on hold. The company was later purchased by Bruce Power, who proposed expanding the plant to four units of a total 4.4 gigawatts. These plans were upset and Bruce later withdrew its application for the Lac Cardinal, proposing instead a new site about 60 km away. The plans are currently moribund after a wide consultation with the public demonstrated that while about of the population were open to reactors, were opposed.
https://en.wikipedia.org/wiki?curid=7475
146,274
949,112
Attempts to study and classify human beings as living organisms date back to ancient Greece. The Greek philosopher Plato ( 428– 347 BC) placed humans on the "scala naturae", which included all things, from inanimate objects at the bottom to deities at the top. This became the main system through which scholars thought about nature for the next roughly 2,000 years. Plato's student Aristotle ( 384–322 BC) observed in his "History of Animals" that human beings are the only animals to walk upright and argued, in line with his teleological view of nature, that humans have buttocks and no tails in order to give them a cushy place to sit when they are tired of standing. He explained regional variations in human features as the result of different climates. He also wrote about physiognomy, an idea derived from writings in the Hippocratic Corpus. Scientific physical anthropology began in the 17th to 18th centuries with the study of racial classification (Georgius Hornius, François Bernier, Carl Linnaeus, Johann Friedrich Blumenbach).
https://en.wikipedia.org/wiki?curid=24232
948,608
765,996
Technologists like Jas Johl have speculated that the functionality of vacuole cells could be used to design highly adaptable security systems. "The functionality of a vacuole, a biological structure that guards and promotes growth, illuminates the value of adaptability as a guiding principle for security." The functions and significance of vacuoles are fractal in nature, the organelle has no basic shape or size; its structure varies according to the requirements of the cell. Vacuoles not only isolate threats, contain what's necessary, export waste, maintain pressure—they also help the cell scale and grow. Johl argues these functions are necessary for any security system design. The 500 Series Shinkansen used biomimicry to reduce energy consumption and noise levels while increasing passenger comfort. With reference to space travel, NASA and other firms have sought to develop swarm-type space drones inspired by bee behavioural patterns, and oxtapod terrestrial drones designed with reference to desert spiders.
https://en.wikipedia.org/wiki?curid=45784
765,586
743,661
There has also been criticism of competitive programming, particularly from professional software developers. One critical point is that many fast-paced programming contests teach competitors bad programming habits and code style (like unnecessary use of macros, lack of OOP abstraction and comments, use of short variable names, etc.). Also, by offering only small algorithmic puzzles with relatively short solutions, programming contests like ICPC and IOI don't necessarily teach good software engineering skills and practices, as real software projects typically have many thousands of lines of code and are developed by large teams over long periods of time. Peter Norvig stated that based on the available data, being a winner of programming contests correlated negatively with a programmer's performance at their job at Google (even though contest winners had higher chances of getting hired). Norvig later stated that this correlation was observed on a small data set, but that it could not be confirmed after examining a larger data set
https://en.wikipedia.org/wiki?curid=34493264
743,267
1,593,373
The imaging radiogenomic approach has proven successful in determining the MRI phenotype associated genetics of glioblastoma, a highly aggressive type of brain tumor with low prognosis. The first large-scale MR-imaging microRNA-mRNA correlative study in GBM was published by Zinn et al. in 2011 Similar studies in liver cancer have successfully determined much of the liver cancer genome from non-invasive imaging features. Gevaert et al. at Stanford University have shown the potential to link image features of non-small cell lung nodules in CT scans to predict survival by leveraging publicly available gene expression data. This publication was accompanied by an editorial discussing the synergy between imaging and genomics. More recently, Mu Zhou et al. at Stanford University have showed that multiple associations between semantic image features and metagenes that represented canonical molecular pathways, and it can result in noninvasive identification of molecular properties of non-small cell lung cancer.
https://en.wikipedia.org/wiki?curid=34639741
1,592,476
1,523,536
The 2017–18 UConn Huskies women's basketball team represented the University of Connecticut (UConn) during the 2017–18 NCAA Division I women's basketball season. The Huskies, led by Hall of Fame head coach Geno Auriemma, in his 33rd season at UConn, played their home games at Harry A. Gampel Pavilion and the XL Center and were fifth-year members of the American Athletic Conference. They finished the season 36–1, 16–0 in AAC play to win the AAC regular season championship. They defeated Tulane, Cincinnati, and South Florida to win the AAC women's tournament title. As a result, they received the conference's automatic bid to the NCAA women's tournament. As the overall No. 1 seed, they defeated Saint Francis (PA) and Quinnipiac to advance to the Sweet Sixteen. They defeated Duke in the Sweet Sixteen and South Carolina in the Elite Eight to reach their 19th Final Four. In the National Semifinal, they lost in overtime on a last second shot for the second consecutive year, this time to Notre Dame, ending the school's 36-game winning streak.
https://en.wikipedia.org/wiki?curid=54727394
1,522,675