doc_id
int32
18
2.25M
text
stringlengths
245
2.96k
source
stringlengths
38
44
__index_level_0__
int64
18
2.25M
1,907,487
Smith identified that 45% of pig farmers and 49% of hogs farmers carried Methicillin-resistant "Staphylococcus aureus" (MRSA). She went on to identify that almost 40% of people with MRSA contain the strain associated with livestock. The work was described as one of the most comprehensive investigations into the spread of MRSA by the journal Nature. She is distinguishing the "Staphylococcus aureus" strains around Iowa City, by characterizing the DNA around several places in the genome. She compared strains related to ST398, a sequence type that is associated with livestock but not expected to cause infection, from around the world. She found that meat that is sold with the claim it contains "no antibiotics" contains the highest levels of the garden-type of "S. aureus". Her research has been covered by The New York Times. Smith has also studied and written about vaccine hesitancy.
https://en.wikipedia.org/wiki?curid=58003483
1,906,391
1,650,533
The ESG may be performed with slight variations by different physicians. It most commonly is performed using the Apollo ESG Device (formally OverStitch device). This device fits over a therapeutic, double-channel endoscope. To create a sutured row of stomach tissue, the tissue helix is advanced from the endoscope, put up against stomach tissue, and turned 2-4 rotations to access the gastric muscle layer. The helix is then retracted towards the scope, bringing the full-thickness acquired stomach tissue with it. Using the handle-operated needle driver, a needle attached to the suture wire is passed through the full-thickness tissue to the anchor exchange. This creates a full-thickness plication of stomach tissue. The needle is then passed back from the anchor exchange to the needle driver, and the process is repeated, threading the suture wire through each bite of stomach tissue. When enough full-thickness bites have been taken for a suture row, a cinch is passed through the scope over the suture. Typically, sutures are placed starting at the border of the antrum and gastric body at the incisura, then placed proximally up to the border of the gastric body and fundus. Each row of sutures can be a straight line or one of the variety of suture patterns reported in the literature, such as the “M,” “Z,” and “U” pattern as well as other novel patterns; nonetheless, to date, no suture pattern has been proven to be superior for weight loss. Regardless of suture pattern, creation of the ESG focuses on tissue imbrication along the greater curvature of the stomach. The fundus is typically avoided due to the relatively thinner wall compared to the gastric body to avoid complications from the procedure.
https://en.wikipedia.org/wiki?curid=58563702
1,649,601
150,643
Many countries and health organizations have published recommendations for healthy levels of daily intake of food energy. For example, the United States government estimates needed for women and men, respectively, between ages 26 and 45, whose total physical activity is equivalent to walking around per day in addition to the activities of sedentary living. These estimates are for a "reference woman" who is tall and weighs and a "reference man" who is tall and weighs . Because caloric requirements vary by height, activity, age, pregnancy status, and other factors, the USDA created the DRI Calculator for Healthcare Professionals in order to determine individual caloric needs.
https://en.wikipedia.org/wiki?curid=182303
150,575
74,728
Diagnosis of acute coronary syndrome generally takes place in the emergency department, where ECGs may be performed sequentially to identify "evolving changes" (indicating ongoing damage to the heart muscle). Diagnosis is clear-cut if ECGs show elevation of the "ST segment", which in the context of severe typical chest pain is strongly indicative of an acute myocardial infarction (MI); this is termed a STEMI (ST-elevation MI) and is treated as an emergency with either urgent coronary angiography and percutaneous coronary intervention (angioplasty with or without stent insertion) or with thrombolysis ("clot buster" medication), whichever is available. In the absence of ST-segment elevation, heart damage is detected by cardiac markers (blood tests that identify heart muscle damage). If there is evidence of damage (infarction), the chest pain is attributed to a "non-ST elevation MI" (NSTEMI). If there is no evidence of damage, the term "unstable angina" is used. This process usually necessitates hospital admission and close observation on a coronary care unit for possible complications (such as cardiac arrhythmias – irregularities in the heart rate). Depending on the risk assessment, stress testing or angiography may be used to identify and treat coronary artery disease in patients who have had an NSTEMI or unstable angina.
https://en.wikipedia.org/wiki?curid=5876
74,701
2,057,307
Away from the plane in those regions where only one or two relatively narrow carbon monoxide lines are found, frequency-switching by 10–20 MHz at a rate of 1 Hz was often used instead of position switching. Since spectral lines remain within the range of the spectrometer in both phases of the switching cycle, data could be obtained twice as fast as with position switching, although higher order polynomials, typically 4th or 5th order, were required to remove the residual baseline. A telluric emission line from carbon monoxide in the mesosphere, variable in both intensity and LSR velocity, is detected in frequency-switched spectra; because the LSR velocity of the line could be predicted exactly, blending with galactic emission could be avoided by appropriate scheduling of the observations. In a few cases of large surveys (e.g., Taurus and Orion) a model of the telluric line was fit daily to spectra free of galactic emission and used to remove the line from all spectra.
https://en.wikipedia.org/wiki?curid=1528987
2,056,123
1,486,100
Leptin's years at LMB raised her interest in cell shape, early cell movement and gastrulation, the last of which she began researching in 1989 during her brief stay at Patrick O'Farrell's group at the University of California, San Francisco as a guest scientist. Afterwards she moved to the Max Planck Institute for Developmental Biology in Tübingen, Germany, leading a research group focused on gastrulation until 1994 when she became a professor at the University of Cologne, Institute of Genetics, a position she is still holding. She is also leading a research group at Cologne, which initially continued her study on gastrulation, but later shifted to the development of the "Drosophila" respiratory system. Eventually, Leptin started using zebrafish as a model organism to study the innate immune response.
https://en.wikipedia.org/wiki?curid=41190009
1,485,262
1,768,453
Haier et al. (2009) provided further neuroimaging evidence for the P-FIT by investigating the correlation between "g" and gray matter volume. This was in order to see whether psychometric "g" is consistently related to a certain neural substrate, or a neuro-"g". The authors argue that previous studies examining the neural correlates of "g" have mostly used indirect measures of "g", render the findings of these studies as inconclusive. The scores of 6292 participants on eight cognitive tests were used to derive "g", and a small subset of 40 participants were also scanned using voxel-based morphometry. The evidence indicates that the neural correlates of "g" depend on part on the type of test used to derive "g", despite evidence indicating that "g" derived from different tests tap onto the same underlying psychometric construct. The authors suggest that this may, in part, explain some of the variance in the neuroimaging findings reviewed by Jung and Haier (2007).
https://en.wikipedia.org/wiki?curid=46424669
1,767,459
2,000,653
"Current Directions in Psychological Science" publishes concise reviews by leading experts spanning all of scientific psychology and its applications. The reviews published in this journal cover diverse topics such as language, memory and cognition, development, the neural basis of behavior and emotions, various aspects of psychopathology, and theory of mind. These articles allow readers to stay apprised of important developments across subfields beyond their areas of expertise and bodies of research they might not otherwise be aware of. The articles in "Current Directions" are also written to be accessible to non-experts, making them suitable for use in the classroom as teaching supplements. The current editor of the journal is Robert Goldstone at Indiana University Bloomington.
https://en.wikipedia.org/wiki?curid=32180012
1,999,508
100,574
The F6F series was designed to take damage and get the pilot safely back to base. A bullet-resistant windshield was used and a total of of cockpit armor was fitted, along with armor around the oil tank and oil cooler. A self-sealing fuel tank was fitted in the fuselage. Standard armament on the F6F-3 consisted of six .50 in (12.7 mm) M2/AN Browning air-cooled machine guns with 400 rounds per gun. A center-section hardpoint under the fuselage could carry a single disposable drop tank, while later aircraft had single bomb racks installed under each wing, inboard of the undercarriage bays; with these and the center-section hard point, late-model F6F-3s could carry a total bomb load in excess of . Six High Velocity Aircraft Rockets (HVARs) could be carried – three under each wing on "zero-length" launchers.
https://en.wikipedia.org/wiki?curid=532448
100,529
15,112
Since retiring, he devoted his time to politics and writing. He formed the United Civil Front movement and joined as a member of The Other Russia, a coalition opposing the administration and policies of Vladimir Putin. In 2008, he announced an intention to run as a candidate in that year's Russian presidential race, but after encountering logistical problems in his campaign, for which he blamed "official obstruction", he withdrew. In the wake of the Russian mass protests that began in 2011, he announced in 2013 that he had left Russia for the immediate future out of fear of persecution. Following his flight from Russia, he had lived in New York City with his family. In 2014, he obtained Croatian citizenship, and has maintained a residence in Podstrana near Split.
https://en.wikipedia.org/wiki?curid=12810
15,107
1,327,366
The bones show no indications of cuts or abrasions, nor do they show the type of damage associated with scavenging carnivores; this suggests that she was buried rapidly, perhaps by a flood, shortly after her death. It is also possible that it was this flood event which killed her. As the sediment pressed down on her through the years, Selam's bones became basically glued together in a highly compressed sandstone block. Usually paleoanthropologists struggle to reassemble fragmentary skeletal finds so as to place them back together, but Zeresenay faced the exact opposite situation with Selam. He worked painstakingly to extricate her impacted skeleton, using dental tools and removing the soil from her ribs and twisted spinal column virtually grain by grain. The process took 6 years before it announced in 2006 and is still ongoing.
https://en.wikipedia.org/wiki?curid=7098772
1,326,639
1,279,995
Recently developed materials suitable for TSA applications are hexagonal LnMnO (Ln: Lanthanides and Y) materials. Oxygen stoichiometric phases ("δ" = 0), denoted as Hex0, crystallize in the hexagonal "P"6"cm" symmetry which can be described as a layered structure in which layers of R cations in eight-fold coordination are separated by layers of corner-sharing trigonal MnO bipyramids. A very important property, from the viewpoint of TSA, is the possibility of the introduction of a significant amount of interstitial oxygen into the structure near the Mn site, which increases the Mn valence to above +3. This process leads to creation of a unique, maximally eightfold coordination of the manganese cations and changes the symmetry of the primitive cell. Introduction of interstitial oxygen into the structure results in the formation of oxygen-loaded phases having different symmetries: "R"3"c" ("δ" ≈ 0.28, Hex1) and "Pca"2 ("δ" ≈ 0.41, Hex2). The operating temperature range of those type of materials in air atmosphere, could be as low as 200-300 ˚C and as narrow as 20 ˚C.
https://en.wikipedia.org/wiki?curid=44030985
1,279,300
2,155,220
Fréchet was planning to spend a year in the United States at the University of Illinois, but his plan was disrupted when the First World War broke out in 1914. He was mobilised on 4 August the same year. Because of his diverse language skills, gained when his mother ran the establishment for foreigners, he served as an interpreter for the British Army. However, this was not a safe job; he spent two and a half years very near to or at the front. French egalitarian ideals caused many academics to be mobilised. They served in the trenches and many of them were lost during the war. It is remarkable that during his service in the war, he still managed to produce cutting edge mathematical papers frequently, despite having little time to devote to mathematics.
https://en.wikipedia.org/wiki?curid=290931
2,153,989
124,963
During these three years of solitude, broken only by occasional communications with the outer world and by the visits of Romanus, Benedict matured both in mind and character, in knowledge of himself and of his fellow-man, and at the same time he became not merely known to, but secured the respect of, those about him; so much so that on the death of the abbot of a monastery in the neighbourhood (identified by some with Vicovaro), the community came to him and begged him to become its abbot. Benedict was acquainted with the life and discipline of the monastery, and knew that "their manners were diverse from his and therefore that they would never agree together: yet, at length, overcome with their entreaty, he gave his consent" (ibid., 3). The experiment failed; the monks tried to poison him. The legend goes that they first tried to poison his drink. He prayed a blessing over the cup and the cup shattered. Thus he left the group and went back to his cave at Subiaco. There lived in the neighborhood a priest called Florentius who, moved by envy, tried to ruin him. He tried to poison him with poisoned bread. When he prayed a blessing over the bread, a raven swept in and took the loaf away. From this time his miracles seem to have become frequent, and many people, attracted by his sanctity and character, came to Subiaco to be under his guidance. Having failed by sending him poisonous bread, Florentius tried to seduce his monks with some prostitutes. To avoid further temptations, in about 530 Benedict left Subiaco. He founded 12 monasteries in the vicinity of Subiaco, and, eventually, in 530 he founded the great Benedictine monastery of Monte Cassino, which lies on a hilltop between Rome and Naples.
https://en.wikipedia.org/wiki?curid=4001
124,911
1,733,528
Channel flow typically occurs in long-hot orogens when the orogen is sufficiently thick to promote partial melting in the middle-lower part of the orogen to a point where the rocks reach a critically low viscosity enabling them to flow. Subsequently these rocks can decoupled from their base and begin to flow to higher crustal levels along lithostatic pressure gradients that can be caused by melt-induced buoyancy or differences in topography and lateral density contrasts. both of which are affected by erosion. Characteristics of this mode of exhumation include simultaneous normal shearing and reverse shearing along the roof and the base of the channel respectively, high-temperature retrograde metamorphic assemblages, cooing ages should be younger to the front of the channel and P-T-t paths suggesting prolonged burial and synchronous exhumation throughout the channel.
https://en.wikipedia.org/wiki?curid=47135247
1,732,551
349,591
In Issue 37 of "Challenge", Julia Martin commented, "the game has style. While it is a game with some ragged edges, "Cyberpunk" recreates the atmosphere of the literature and movies from which it draws admirably." Martin had issues with the combat system, especially the organization of the rules, some ambiguous rules, and the lack of super-advanced weaponry. She also grumbled about typos, noting, "Quite frankly, I don't think I've seen this many apparently careless, minor errors since Judges Guild went defunct some years ago." She also found the netrunning system far too general. Despite all these problems, she confessed, "I really like this game. It has lots of problems, [...] but it has a great many redeeming points also. [...] The characters and the world view are the heart of Cyberpunk, and they are the best of it." She concluded, "It is a marvelous creature which can be molded into a tremendous campaign by a referee with experience. It is definitely worth the money (and you might even like the combat system). Go check it out."
https://en.wikipedia.org/wiki?curid=151821
349,408
581,999
Astrochemistry overlaps with astrophysics and nuclear physics in characterizing the nuclear reactions which occur in stars, as well as the structure of stellar interiors. If a star develops a largely convective envelope, dredge-up events can occur, bringing the products of nuclear burning to the surface. If the star is experiencing significant mass loss, the expelled material may contain molecules whose rotational and vibrational spectral transitions can be observed with radio and infrared telescopes. An interesting example of this is the set of carbon stars with silicate and water-ice outer envelopes. Molecular spectroscopy allows us to see these stars transitioning from an original composition in which oxygen was more abundant than carbon, to a carbon star phase where the carbon produced by helium burning is brought to the surface by deep convection, and dramatically changes the molecular content of the stellar wind.
https://en.wikipedia.org/wiki?curid=71268
581,701
144,792
Some laws reflect mathematical symmetries found in Nature (e.g. the Pauli exclusion principle reflects identity of electrons, conservation laws reflect homogeneity of space, time, and Lorentz transformations reflect rotational symmetry of spacetime). Many fundamental physical laws are mathematical consequences of various symmetries of space, time, or other aspects of nature. Specifically, Noether's theorem connects some conservation laws to certain symmetries. For example, conservation of energy is a consequence of the shift symmetry of time (no moment of time is different from any other), while conservation of momentum is a consequence of the symmetry (homogeneity) of space (no place in space is special, or different than any other). The indistinguishability of all particles of each fundamental type (say, electrons, or photons) results in the Dirac and Bose quantum statistics which in turn result in the Pauli exclusion principle for fermions and in Bose–Einstein condensation for bosons. The rotational symmetry between time and space coordinate axes (when one is taken as imaginary, another as real) results in Lorentz transformations which in turn result in special relativity theory. Symmetry between inertial and gravitational mass results in general relativity.
https://en.wikipedia.org/wiki?curid=244629
144,734
878,777
In 1953, Francis Crick, James Watson, Maurice Wilkins and Rosalind Franklin discovered the double helix structure of the DNA macromolecule. Gamow attempted to solve the problem of how the ordering of four different bases (adenine, cytosine, thymine and guanine) in DNA chains might control the synthesis of proteins from their constituent amino acids. Crick has said that Gamow's suggestions helped him in his own thinking about the problem. As related by Crick, Gamow observed that the 4 = 64 possible permutations of the four DNA bases, taken three at a time, would be reduced to 20 distinct combinations if the order was irrelevant. Gamow proposed that these 20 combinations might code for the twenty amino acids which, he suggested, might well be the sole constituents of all proteins. Gamow's contribution to solving the problem of genetic coding gave rise to important models of biological degeneracy.
https://en.wikipedia.org/wiki?curid=74641
878,314
1,828,609
Somasundaram is credited with the establishment of the first laboratory for molecular oncology at the IISc and his contributions are also reported in the establishment of a facility for genomics at the institute. He has undertaken many research programs in cancer biology which included the IISC initiative on Cancer Biology and Therapeutics. He serves as the principal investigator of the Genomics Programme of the IISc in collaboration with the New Millennium Indian Technology Leadership Initiative (NMITLI) of the Council of Scientific and Industrial Research (CSIR) and is the co-convener of the "DBT - IISc Partnership Program for Advanced Research in Biological Sciences and Bio Engineering". He is a member of the "DBT Neurobiology Task force" of the Department of Biotechnology, sits in the editorial board of the "" journal published by Taylor & Francis and is a former member of the senate of the Indian Institute of Science.
https://en.wikipedia.org/wiki?curid=56118452
1,827,569
698,844
The process of encoding is not yet well understood, however key advances have shed light on the nature of these mechanisms. Encoding begins with any novel situation, as the brain will interact and draw conclusions from the results of this interaction. These learning experiences have been known to trigger a cascade of molecular events leading to the formation of memories. These changes include the modification of neural synapses, modification of proteins, creation of new synapses, activation of gene expression and new protein synthesis. One study found that high central nervous system levels of acetylcholine during wakefulness aided in new memory encoding, while low levels of acetylcholine during slow-wave sleep aided in consolidation of memories. However, encoding can occur on different levels. The first step is short-term memory formation, followed by the conversion to a long-term memory, and then a long-term memory consolidation process.
https://en.wikipedia.org/wiki?curid=5128182
698,480
2,133,182
At the time, American universities were just beginning to view international relations as a subject for formal programs of study. The goal of the new institution was to do research regarding a broad range of topics and behaviors related to relations among states. The school was intended to look at the specific problems that American foreign policy faced, and there was also the idea that the research produced might give humanity some guidance towards finding world peace. The school had ambitious plans, among them the creation of a professorship international law, theory of diplomacy, international finance, and commercial policy. The Page School was one of several such institutes to be created during the interwar years, with two other well-known instances being the Fletcher School of Law and Diplomacy at Tufts University and the Institute of International Studies at Yale University.
https://en.wikipedia.org/wiki?curid=72285658
2,131,957
248,830
The first flight of the first Typhoon prototype, "P5212", made by Hawker's Chief test Pilot Philip Lucas from Langley, was delayed until 24 February 1940 because of the problems with the development of the Sabre engine. Although unarmed for its first flights, "P5212" later carried 12 .303 in (7.7 mm) Brownings, set in groups of six in each outer wing panel; this was the armament fitted to the first 110 Typhoons, known as the Typhoon IA. "P5212" also had a small tail-fin, triple exhaust stubs and no wheel doors fitted to the centre-section. On 9 May 1940 the prototype had a mid-air structural failure, at the join between the forward fuselage and rear fuselage, just behind the pilot's seat. Philip Lucas could see daylight through the split but instead of bailing out, landed the Typhoon and was later awarded the George Medal.
https://en.wikipedia.org/wiki?curid=63744
248,702
1,574,572
In 2011 the Radiation Oncology Institute (ROI) announced the National Radiation Oncology Registry (NROR). ROI and Massachusetts General Hospital would initially focus the NROR on prostate cancer, collecting efficacy and side effect information (like radiation induced neuropathy, RILP) from people treated with radiotherapy. In 2013 the American Society for Radiation Oncology (ASTRO) joined the effort and the number of data collection sites increased to 30 for a 1-year pilot project. Pitfalls of medical data collection arose with only 14 sites being able to provide data and all those requiring significant manual entry efforts. The first NROR project conclusion was that future registries would need to cope with Big data analytics. In 2015 ASTRO, the National Cancer Institute and the American Association of Physicists in Medicine sponsored a Big Data Workshop at the National Institutes of Health.
https://en.wikipedia.org/wiki?curid=57052173
1,573,683
1,960,353
After launching, the sisters were transferred to Kronstadt for fitting out as the shallow waters around Saint Petersburg prevented deep-draft ships from being completed. This added more delays as the dockyard there lacked the equipment to efficiently fit out the ships. Both ships were assigned to the Baltic Fleet upon completion. They were not fully equipped until around 1872 and their trials continued until 1873. "Admiral Spiridov" accidentally rammed the monitor in Kronstadt harbor in 1871, and her sister collided with the monitor four years later; neither ship was seriously damaged. Several days after the collision, "Admiral Chichagov" struck a sandbank at full speed. While not damaged in the incident, she was very firmly stuck and early attempts to pull her off failed, during which one seaman was killed and an officer badly wounded. The monitor had to be unloaded as much as possible and her forward guns were removed before she was freed from the sandbank, five days after running aground.
https://en.wikipedia.org/wiki?curid=29954791
1,959,226
140,645
Epidemics of FMD have resulted in the slaughter of millions of both infected and healthy animals, despite this being a frequently nonfatal disease for adult animals (2–5% mortality), though young animals can have a high mortality. The 1997 Taiwan outbreak that affected only pigs also showed a high mortality for adults. The destruction of animals is primarily to halt further spread, as growth and milk production may be permanently affected, even in animals that have recovered. Due to international efforts to eradicate the disease, infection would also lead to trade bans being imposed on affected countries. Critics of current policies to cull herds argue that the financial imperative needs to be balanced against the killing of many, mostly healthy animals, especially when a significant proportion of infected animals, most notably those producing milk, would recover from infection and live normal lives, albeit with reduced milk production. On the ethical side, one must also consider that FMD is a painful disease for the affected animals. The vesicles and blisters are painful in themselves, and restrict both eating and movement. Through ruptured blisters, the animal is at risk from secondary bacterial infections and, in some cases, permanent disability.
https://en.wikipedia.org/wiki?curid=21438755
140,588
836,078
A significant difference between viroids and HDV is that, while viroids produce no proteins, HDV is known to produce one protein, namely HDAg. It comes in two forms; a 27kDa large-HDAg, and a small-HDAg of 24kDa. The N-terminals of the two forms are identical, they differ by 19 more amino acids in the C-terminal of the large HDAg. Both isoforms are produced from the same reading frame which contains an UAG stop codon at codon 196, which normally produces only the small-HDAg. However, editing by cellular enzyme adenosine deaminase-1 changes the stop codon to UGG, allowing the large-HDAg to be produced. Despite having 90% identical sequences, these two proteins play diverging roles during the course of an infection. HDAg-S is produced in the early stages of an infection and enters the nucleus and supports viral replication. HDAg-L, in contrast, is produced during the later stages of an infection, acts as an inhibitor of viral replication, and is required for assembly of viral particles. Thus RNA editing by the cellular enzymes is critical to the virus' life cycle because it regulates the balance between viral replication and virion assembly.
https://en.wikipedia.org/wiki?curid=214294
835,629
1,032,743
The experience he had gained during his campaigns obtaining the voter list from the state and using it for campaign purposes led him and his brother Dean (who had written a program to handle the list on an Apple II) to found Aristotle, Inc. in 1983, a non-partisan technology consulting firm for political campaigns which John Philips has since led as the CEO. It specializes in combining voter lists with personal data from other sources (such as income, gun ownership or church attendance) and data-mining, to assist with micro-targeting of specific voter groups; as of 2007, its database contained detailed information about ca. 175 million U.S. voters and it had about 100 employees.
https://en.wikipedia.org/wiki?curid=2134763
1,032,207
2,031,685
Both Aldis and her husband were active in social reform efforts, commenting on matters relating to vaccination, vivisection, atrocities in Jamaica and the Congo, and women's access to higher education. Aldis was also active in efforts to get the Contagious Diseases Act repealed, and to end legalised prostitution in India. Aldis is considered one of the leaders in the campaign to allow women to enter Durham University. She spoke publicly about the unfair treatment received by women students at Cambridge University, who were at that point only allowed to sit the Tripos by special permission, and could only gain a certificate in recognition of their success. In 1880, together with her husband, Aldis circulated a petition (known as the Newcastle Memorial) urging the university to allow women students to be admitted by right and to earn formal degrees. The petition gained 8,000 signatures, and was followed by a vote in 1881 in which the Senate granted women the right to sit the Tripos, but not to earn a degree.
https://en.wikipedia.org/wiki?curid=66284143
2,030,516
953,247
As technology continues to advance within the medical field, so do the options available for healthcare. Out of respect for the patient's autonomy, patients and their families are able to make their own decisions about life-sustaining treatment or whether to hasten death. When patients and their families are forced to make decisions concerning life support as a form of end-of-life or emergency treatment, ethical dilemmas often arise. When a patient is terminally ill or seriously injured, medical interventions can save or prolong the life of the patient. Because such treatment is available, families are often faced with the moral question of whether or not to treat the patient. Much of the struggle concerns the ethics of letting someone die when they can be kept alive versus keeping someone alive, possibly without their consent. Between 60 and 70% of seriously ill patients will not be able to decide for themselves whether or not they want to limit treatments, including life support measures. This leaves these difficult decisions up to loved ones and family members.
https://en.wikipedia.org/wiki?curid=261763
952,742
1,960,700
Bees of the genus "Ptilothrix" are solitary. Unlike honeybees or other eusocial bee species, the members of "Ptilothrix" do not form a hive or have division of labor of individuals. Females nest individually in hard-packed soil and oviposit eggs into brood cells provisioned with masses of pollen and nectar, which provide nutrients for their offspring. The adults emerge from the nest, which is sometimes covered with a layer of soil to prevent predation. Predation in the larval stage is most commonly from parasitoid wasps, fire ants, and assassin flies, whose lifecycle is closely timed to that of "P. plumata". Due to the threat of predators and adverse environmental conditions, pupae can exhibit pupal diapause, or the ability to delay maturation until favorable environmental conditions occur. Some species will build their nests in dense aggregations in the same area.
https://en.wikipedia.org/wiki?curid=45401986
1,959,573
1,250,735
In terms of tolerability, enzalutamide and bicalutamide appear comparable in most regards, with a similar moderate negative effect on sexual function and activity for instance. However, enzalutamide has a risk of seizures and other central side effects such as anxiety and insomnia related to off-target GABA receptor inhibition that bicalutamide does not appear to have. On the other hand, unlike with all of the earlier (flutamide, nilutamide, and bicalutamide), there has been no evidence of hepatotoxicity or elevated liver enzymes in association with enzalutamide treatment in clinical trials. In addition to differences in adverse effects, enzalutamide is a strong inducer of CYP3A4 and a moderate inducer of CYP2C9 and CYP2C19 and poses a high risk of major drug interactions (CYP3A4 alone being involved in the metabolism of approximately 50 to 60% of clinically important drugs), whereas drug interactions are few and minimal with bicalutamide.
https://en.wikipedia.org/wiki?curid=55841187
1,250,059
1,517,997
"Publishers Weekly" review said, "Attractive on the shelf as both contemporary and science-focused, it is exactly what the author is trying to accomplish with his re-told fable, as well as a fine treatment of already beautiful imagery; not a lot of pushing and pulling is needed." A Trashotron review said, "fiction space opera as well as a new kind of children's book. It really does hold up with an appeal for anyone who is interested in science, storytelling or fathers and sons. That might add up to a sizable audience. They'll be well-rewarded, and it's good that the book can withstand multiple readings. It will get read and re-read; it is, after all, a myth." Booklist in their review called the novel "clever, charming, and mind-expanding, the perfect vehicle for conveying the astonishingly supple nature of space, time, and the human mind."
https://en.wikipedia.org/wiki?curid=19976444
1,517,139
906,875
In 1883, shortly after the London tournament, Steinitz decided to leave England and moved to New York City, where he lived for the rest of his life. This did not end the "Ink War": his enemies persuaded some of the American press to publish anti-Steinitz articles, and in 1885 Steinitz founded the "International Chess Magazine", which he edited until 1895. In his magazine he chronicled the lengthy negotiations for a match with Zukertort. He also managed to find supporters in other sections of the American press including "Turf, Field and Farm" and the St. Louis "Globe-Democrat", both of which reported Steinitz's offer to forgo all fees, expenses or share in the stake and make the match "a benefit performance, solely for Mr Zukertort's pecuniary profit".
https://en.wikipedia.org/wiki?curid=167866
906,398
1,578,207
The NGA has created a grouping of web-based capabilities called GEOINT Online. This program allows a user to search and access all NGA GEOINT documents from wherever they are stored and from wherever the user is. GEOINT Online provides quick, easy, and reliable access to current NGA intelligence products, changes in activities or regions, information from analyst's blogs and Intellipedia, geospatial imagery, maps and charts, major GIS commercial software packages, and GIS combinations of these products. A user can also edit and format existing NGA/GIS products and maps to create, print, and download new products that fulfill current decisionmaker requirements. Ultimately, this results in the faster production of timely and relevant GEOINT data. This program allowed the NGA to change its focus from simply generating cartographic products to providing updated, accurate GEOINT to support the national security and military requirements of its customers.
https://en.wikipedia.org/wiki?curid=30831822
1,577,317
1,656,128
Some treatments may directly combat the mechanisms by which the disease may be caused. To suppress the immune system, steroids, antibodies, or even human cells may be injected into a patient. Certain types of antibodies called intravenous immunoglobulins (IVIG) also have shown to lead to reduced symptoms due to their ability to reduce and eliminate anti-Hu antibodies. A drug called rituximab, a molecule that targets B cells, helps reduce the symptoms of anti-Hu encephalitis and decreases the number of anti-Hu antibodies. Cancer treatment may involve surgical removal of the tumor, or medications that may shrink or eliminate the tumor. Treatment with cyclophosphamide, a chemotherapy drug, has shown promise, in addition to adrenocorticotropic hormone (ACTH). This hormone is involved in regulating many body functions including stress level and blood pressure. Steroids such as dexamethasone may help reduce disease burden by reducing the antibody-building activity of the disease. Despite the fact that steroids can be used to reduce the immunological antibody-building activity of the disease in all people, many other anti-Hu encephalitis treatments are most effective in children.
https://en.wikipedia.org/wiki?curid=55906778
1,655,195
1,639,363
New drugs must pass several clinical trials in order to get approved by regulatory agencies. Phase III is normally the last testing phase and when results are as expected a formal approval request is submitted to the regulator. Phase III programs consist of studies on large patient groups (300 to 3,000 or more) and are aimed at being the definitive assessment of how effective and safe a test drug will be. It is the last stage of drug development and is followed by a submission to the appropriate regulatory agencies (e.g., European Medicines Agency (EMEA) for the European Union, the Food and Drug Administration (FDA) for the United States, Therapeutic Goods Administration (TGA) for Australia, etc.) to obtain approval for marketing. Treatment in MS phase III studies is usually two years per patient.
https://en.wikipedia.org/wiki?curid=13033422
1,638,438
1,469,470
Work on cooling high-performance aircraft engines in the 1930s led to the adoption of pressurised cooling systems, which became common on post-war cars. As the boiling point of water increases with increasing pressure, these pressurised systems could run at a higher temperature without boiling. This increased both the working temperature of the engine, thus its efficiency, and also the heat capacity of the coolant by volume, allowing smaller cooling systems that required less pump power. A drawback to the bellows thermostat was that it was also sensitive to pressure changes, thus could sometimes be forced shut again by pressure, leading to overheating. The later wax pellet type has a negligible change in its external volume, thus is insensitive to pressure changes. It is otherwise identical in operation to the earlier type. Many cars of the 1950s, or earlier, that were originally built with bellows thermostats were later serviced with replacement wax capsule thermostats, without requiring any change or adaption.
https://en.wikipedia.org/wiki?curid=9300583
1,468,646
1,266,266
Apart from these advantages, there are several disadvantages needed to take into considerations. The plant integrating Ca-Looping might require a high construction investment because of the high thermal power of the post-combustion calcium loop. The sorbent capacity decreases significantly with the number of cycles for every carbonation-calcination cycle so the calcium-looping unit will require a constant flow of limestone. In order to increase the long-term reactivity of the sorbent or to reactivate the sorbent, some methods are under investigation such as thermal pretreatment, chemical doping and the production of artificial sorbents. The method applying the concept of fluidized bed reactor, but there are some problems causing the uncertainty for the process. Attrition of the limestone can be a problem during repeated cycling.
https://en.wikipedia.org/wiki?curid=42268134
1,265,578
1,748,524
Around 2017, the first selective RET inhibitors selpercatinib (LOXO-292) and pralsetinib (BLU-667) started their first phase I/II clinical trials in solid tumors. They were designed to have high potency for RET, along with low affinity for other related targets such as VEGFR-family kinases to limit off-target toxicities. They were also designed to overcome the V804 gatekeeper mutations that some patients acquired under multikinase inhibitors. In patients who had previously received platinum chemotherapies for their lung cancers, ORRs hovered around 60% with median PFS between 17 months and not-evaluable (NE). Similar promising results came out for thyroid cancers as well, with response rates at 70-80% and median PFS between 18 and 22 months. The encouraging results of the phase I/II trials led to the FDA approvals of selpercatinib (Retevmo™) for RET-driven NSCLC, MTC and PTC in May 2020, and the approval of pralsetinib (Gavreto™) for RET-fusion NSCLC in September 2020, as well as MTC and PTC in December 2020.
https://en.wikipedia.org/wiki?curid=65584329
1,747,538
1,037,768
Often, these structures incorporate sophisticated features such as temperature regulation, traps, bait, ventilation, special-purpose chambers and many other features. They may be created by individuals or complex societies of social animals with different forms carrying out specialized roles. These constructions may arise from complex building behaviour of animals such as in the case of night-time nests for chimpanzees, from inbuilt neural responses, which feature prominently in the construction of bird songs, or triggered by hormone release as in the case of domestic sows, or as emergent properties from simple instinctive responses and interactions, as exhibited by termites, or combinations of these. The process of building such structures may involve learning and communication, and in some cases, even aesthetics. Tool use may also be involved in building structures by animals.
https://en.wikipedia.org/wiki?curid=32282725
1,037,227
1,667,598
There have been several attempts to make use of modern technology for enhanced binocular eye training, in particular for treating amblyopia and interocular suppression. In some cases these modern techniques have improved patients' stereoacuity. Very early technology-enhanced vision therapy efforts have included the cheiroscope, which is a haploscope in which left- and or right-eye images can be blended into view over a drawing pad, and the subject may be given a task such as to reproduce a line image presented to one eye. However, historically these approaches were not developed much further and they were not put to widespread use. Recent systems are based on dichoptic presentation of the elements of a video game or virtual reality such that each eye receives different signals of the virtual world that the player's brain must combine in order to play successfully.
https://en.wikipedia.org/wiki?curid=40018674
1,666,659
2,109,657
More recently, under the aegis of Innovate UK funding, DAISY has been extensively modified to meet the needs of upstream activities within the oil and gas sector, in particular biostratigraphy. The resultant system, GeoDAISY represents a significant technological advance. It is capable of deep learning, knowledge encapsulation, pattern based data mining and (image based) content search and can efficiently handle training sets consisting of millions of patterns on commodity hardware using a combination of smart data caching and OpenMP. Further details of GeoDAISY, and the rationale for developing it are available as white papers on the Tumbling Dice LinkedIn page.
https://en.wikipedia.org/wiki?curid=30114967
2,108,443
787,893
Air quality forecasting attempts to predict when the concentrations of pollutants will attain levels that are hazardous to public health. The concentration of pollutants in the atmosphere is determined by their "transport", or mean velocity of movement through the atmosphere, their diffusion, chemical transformation, and ground deposition. In addition to pollutant source and terrain information, these models require data about the state of the fluid flow in the atmosphere to determine its transport and diffusion. Meteorological conditions such as thermal inversions can prevent surface air from rising, trapping pollutants near the surface, which makes accurate forecasts of such events crucial for air quality modeling. Urban air quality models require a very fine computational mesh, requiring the use of high-resolution mesoscale weather models; in spite of this, the quality of numerical weather guidance is the main uncertainty in air quality forecasts.
https://en.wikipedia.org/wiki?curid=1505381
787,469
1,559,394
For some historical information, see: History of special relativity#Spacetime physics and the section "Lorentz transformation without second postulate" for the approaches of Ignatowski and Frank/Rothe. However, according to Pauli (1921), Resnick (1967), and Miller (1981), those models were insufficient. But the constancy of the speed of light is contained in Maxwell's equations. That section includes the phrase "Ignatowski was forced to recourse to electrodynamics to include the speed of light.". So, the trio of "principle of relativity+Maxwell+numerical values from experiment" gives special relativity and this should be compared with "principle of relativity+second postulate+Maxwell+numerical values from experiment". Since Einstein's 1905 paper is all about electrodynamics he is assuming Maxwell's equations, and the theory isn't practically applicable without numerical values. When compared like with like, from the point of view of asking what is knowable, the second postulate can be deduced. If you restrict your attention to just the standalone theory of relativity then yes you need the postulate. But given all the available knowledge we don't need to postulate it. In other words, different domains of knowledge are overlapping and thus taken together have more information than necessary.
https://en.wikipedia.org/wiki?curid=20069953
1,558,508
1,422,944
One of the hallmarks of Martin-Baker designs was the simple but efficient installation of main systems. The clean and orderly cockpit was set well back, allowing a good view downwards behind the wing. A crash post was fitted, which automatically extended to minimise structure damage and injury to the pilot in the event of a nose-over landing. A small, tapered tailplane was mounted on the top of the fuselage well forward of the stern post, while the fin and rudder combination was roughly triangular in side elevation. This arrangement placed most of the effective rudder area below the tailplane, thus providing an adequate balance to the keel surface and assuring good recovery from spins. In initial MB 2 configurations, there was no fin and the rudder was mounted on the fuselage but lateral stability was unsatisfactory, with the fixed fin added later.
https://en.wikipedia.org/wiki?curid=11680435
1,422,143
507,548
In 1993, Van den Hoogenband achieved his first success, performing well on the European Youth Olympic Days. Before the Atlanta Games, Astrid van den Hoogenband, who was coaching the Dutch team, became frustrated with the swimmers representing the Netherlands, feeling they had much potential but would not be able to live up to it due to lack of adequate support. She pleaded with Cees to take action, as he carried much weight from his professional connections. After Astrid threatened to remove Pieter from the sport, Cees created a small foundation and signed up 20 initial sponsors who each paid $2,500 to fund a team trainer. The Dutch swimming team eventually signed contracts with Philips, Nike, and Speedo. Enough funds were raised to open a swim school in Eindhoven, Van den Hoogenband's place of residence. The team eventually grew to ten. Pieter remained the Netherlands' brightest star, and along with fellow Dutch Inge de Bruijn brought the Netherlands many victories in the sport.
https://en.wikipedia.org/wiki?curid=101200
507,284
636,539
Allometric scaling is any change that deviates from isometry. A classic example discussed by Galileo in his "Dialogues Concerning Two New Sciences" is the skeleton of mammals. The skeletal structure becomes much stronger and more robust relative to the size of the body as the body size increases. Allometry is often expressed in terms of a scaling exponent based on body mass, or body length (snout–vent length, total length, etc.). A perfectly allometrically scaling organism would see all volume-based properties change proportionally to the body mass, all surface area-based properties change with mass to the power of 2/3, and all length-based properties change with mass to the power of 1/3. If, after statistical analyses, for example, a volume-based property was found to scale to mass to the 0.9th power, then this would be called "negative allometry", as the values are smaller than predicted by isometry. Conversely, if a surface area-based property scales to mass to the 0.8th power, the values are higher than predicted by isometry and the organism is said to show "positive allometry". One example of positive allometry occurs among species of monitor lizards (family Varanidae), in which the limbs are relatively longer in larger-bodied species. The same is true for some fish, e.g. the muskellunge, the weight of which grows with about the power of 3.325 of its length. A muskellunge will weigh about , while a muskellunge will weigh about , so 33% longer length will more than double the weight.
https://en.wikipedia.org/wiki?curid=1663537
636,200
1,698,127
Perceptions of gender differences in cognitive abilities date back to ancient Greece, when the early physician Hippocrates dubbed the term 'hysteria' or 'wandering womb' to account for emotional instability and mental illness in women. This diagnosis survived up until the mid-19th century and the beginning of the women's suffrage movement, and was used as evidence for women's inability to handle intellectual work. Prominent physicians of this era, including neurologist Sigmund Freud, argued that women were biologically suited to homemaking and housework, as they did not have enough blood to power both the brain and the uterus. When women began attending university in the late 19th and early 20th centuries, opponents asserted that the high demands of post-secondary education on the female brain would render women sterile.
https://en.wikipedia.org/wiki?curid=41403497
1,697,173
919,919
Researchers have used measurements from CERES, AIRS, CloudSat and other satellite-based instruments within NASA's Earth Observing System to parse out contributions by the natural fluctuations and system feedbacks. Removing these contributions within the multi-year data record allows observation of the anthropogenic trend in top-of-atmosphere (TOA) IRF. The data analysis has also been done in a way that is computationally efficient and independent of most related modelling methods and results. Radiative forcing was thus directly observed to have risen by +0.53 W m (±0.11 W m) from years 2003 to 2018. About 20% of the increase was associated with a reduction in the atmospheric aerosol burden, and most of the remaining 80% was attributed to the rising burden of greenhouse gases.
https://en.wikipedia.org/wiki?curid=467147
919,433
761,396
The Israeli Air Force formed in 1948 with the formation of the modern State of Israel. Israel was involved in the 1948 Arab–Israeli War immediately after the end of the British mandate in Palestine. The air force initially consisted of mainly donated civil aircraft, a variety of obsolete and surplus ex-World War II combat-aircraft were quickly sourced by various means to supplement this fleet. Creativity and resourcefulness were the early foundations of Israeli military success in the air, rather than technology which, at the inception of the IAF, was generally inferior to that used by Israel's adversaries. In light of the complete Arab theater air supremacy, and the bombing and shelling of existing airbases, the first Israeli military-grade fighters operated from a hastily constructed makeshift airbase around the current Herzliya Airport, with fighters dispersed between the trees of an orange orchard. As the war progressed, more and more Czechoslovak, American, and British surplus WWII-era aircraft were procured, leading to a shift in the balance of power.
https://en.wikipedia.org/wiki?curid=537478
760,989
1,209,230
At the Abu Dhabi Aquatics Festival, held in parallel with the 2021 World Short Course Championships, in December 2021, Wellbrock won a bronze medal as part of the open water 4×1500 metre mixed relay event. In his individual event, the 10 kilometre open water swim, Wellbrock won the gold medal in a time of 1:48:09.4, finishing over two seconds ahead of silver medalist Domenico Acerenza of Italy. As part of the World Championships, Wellbrock swam a 14:25.79 in the prelims heats of the 1500 metre freestyle on 20 December, qualifying for the final the following day ranking third. In the final of the 1500 metre freestyle, Wellbrock set a new world record with a time of 14:06.88 and won the gold medal. Wellbrock also co-hosted a swimming clinic at the venue of the World Championships, Etihad Arena, with Anthony Ervin of the United States.
https://en.wikipedia.org/wiki?curid=51318450
1,208,583
647,854
Papert (then aged 78), received a serious brain injury when struck by a motor scooter on 5 December 2006 while crossing the street with colleague Uri Wilensky when they were both attending the 17th International Commission on Mathematical Instruction (ICMI) Study conference in Hanoi, Vietnam. He underwent emergency surgery to remove a blood clot at the French Hospital of Hanoi before being transferred in a complex operation by Swiss Air Ambulance (REGA) Bombardier Challenger Jet to Boston, Massachusetts. He was moved to a hospital closer to his home in January 2007, but then developed sepsis which damaged a heart valve, which was later replaced.
https://en.wikipedia.org/wiki?curid=27802
647,514
1,035,858
The 1993 Mississippi river flood, the largest ever recorded on the river, was a response to a heavy, long duration spring and summer rainfalls. Early rains saturated the soil over more than a 300,000 square miles of the upper watershed, greatly reducing infiltration and leaving soils with little or no storage capacity. As rains continued, surface depressions, wetlands, ponds, ditches, and farm fields filled with overland flow and rainwater. With no remaining capacity to hold water, additional rainfall was forced from the land into tributary channels and thence to the Mississippi River. For more than a month, the total load of water from hundreds of tributaries exceeded the Mississippi’s channel capacity, causing it to spill over its banks onto adjacent floodplains. Where the flood waters were artificially constricted by an engineered channel bordered by constructed levees and unable to spill onto large section of floodplain, the flood levels forced even higher.
https://en.wikipedia.org/wiki?curid=4687085
1,035,318
519,724
The laboratory staff has studied ways to integrate input from Global Positioning System (GPS) into Inertial navigation system-based navigation in order to lower costs and improve reliability. Military inertial navigation systems (INS) cannot totally rely on GPS satellite availability for course correction (which is necessitated by gradual error growth or "drift"), because of the threat of hostile blocking or jamming of signal. A less accurate inertial system usually means a less costly system, but one that requires more frequent recalibration of position from another source, like GPS. Systems which integrate GPS with INS are classified as "loosely coupled" (pre-1995), "tightly coupled" (1996-2002), or "deeply integrated" (2002 onwards), depending on the degree of integration of the hardware. , it was envisioned that many military and civilian uses would integrate GPS with INS, including the possibility of artillery shells with a deeply integrated system that can withstand 20,000 g, when fired from a cannon.
https://en.wikipedia.org/wiki?curid=445258
519,455
278,340
The main sequence is sometimes divided into upper and lower parts, based on the dominant process that a star uses to generate energy. The Sun, along with main sequence stars below about 1.5 times the mass of the Sun (), primarily fuse hydrogen atoms together in a series of stages to form helium, a sequence called the proton–proton chain. Above this mass, in the upper main sequence, the nuclear fusion process mainly uses atoms of carbon, nitrogen, and oxygen as intermediaries in the CNO cycle that produces helium from hydrogen atoms. Main-sequence stars with more than two solar masses undergo convection in their core regions, which acts to stir up the newly created helium and maintain the proportion of fuel needed for fusion to occur. Below this mass, stars have cores that are entirely radiative with convective zones near the surface. With decreasing stellar mass, the proportion of the star forming a convective envelope steadily increases. Main-sequence stars below undergo convection throughout their mass. When core convection does not occur, a helium-rich core develops surrounded by an outer layer of hydrogen.
https://en.wikipedia.org/wiki?curid=19605
278,190
565,729
Another doctor at Harbor General was Mark Mecikalski, who followed the American space program. At lunch in June 1977 he informed Bill, who was now Sims's fiancé, that the National Aeronautics and Space Administration (NASA) was conducting a selection of a new group of astronauts and recruiting doctors. Bill had Sims paged over the hospital loudspeaker system. They both applied, although they agreed that Sims had the better chance, due to her background in chemistry as well as medicine. They had three weeks to assemble the required documents and submit their applications. Sims posted hers the day before the deadline. NASA received 8,079 applications, and chose 208 for further screening. Sims was invited to come to the Johnson Space Center (JSC) in Houston, for a week of interviews, evaluations and examinations, commencing on August 29, 1977.
https://en.wikipedia.org/wiki?curid=1397856
565,439
228,539
While many eight-bit home computers of the 1980s, such as the BBC Micro, Commodore 64, Apple II series, the Atari 8-bit, the Amstrad CPC, ZX Spectrum series and others could load a third-party disk-loading operating system, such as CP/M or GEOS, they were generally used without one. Their built-in operating systems were designed in an era when floppy disk drives were very expensive and not expected to be used by most users, so the standard storage device on most was a tape drive using standard compact cassettes. Most, if not all, of these computers shipped with a built-in BASIC interpreter on ROM, which also served as a crude command line interface, allowing the user to load a separate disk operating system to perform file management commands and load and save to disk. The most popular home computer, the Commodore 64, was a notable exception, as its DOS was on ROM in the disk drive hardware, and the drive was addressed identically to printers, modems, and other external devices.
https://en.wikipedia.org/wiki?curid=55395
228,422
1,422,876
Thalattosaurs have moderate adaptations to marine lifestyles, including long, paddle-like tails and slender bodies with more than 20 dorsal vertebrae. There are few unique traits of the postcranial skeleton shared by all thalattosaurs, but the skeleton is still useful for distinguishing between askeptosauroids and thalattosauroids. Askeptosauroids are characterized by elongated necks with short neural spines and at least 11 vertebrae, while thalattosauroids have shorter necks sometimes involving as few as four vertebrae. Thalattosauroids also have tall neural spines on their neck, back, and especially the tail vertebrae, increasing the surface area for swimming via lateral undulation. Thalattosauroids additionally possess short, wide limb bones poorly adapted for movement on land. In this superfamily, the humerus is widest near the shoulder, the femur is widest near the knee, the radius is reniform ("kidney-shaped"), and phalanges are long and plate-like. Askeptosauroids retain hourglass-shaped limb bones like land reptiles, but even they share specializations with thalattosauroids such as a short tibia and fibula, with the latter expanding near the ankle.
https://en.wikipedia.org/wiki?curid=14067771
1,422,075
504,582
Lack of fusion is the poor adhesion of the weld bead to the base metal; incomplete penetration is a weld bead that does not start at the root of the weld groove. Incomplete penetration forms channels and crevices in the root of the weld which can cause serious issues in pipes because corrosive substances can settle in these areas. These types of defects occur when the welding procedures are not adhered to; possible causes include the current setting, arc length, electrode angle, and electrode manipulation. Defects can be varied and classified as critical or non critical. Porosity (bubbles) in the weld are usually acceptable to a certain degree. Slag inclusions, undercut, and cracks are usually unacceptable. Some porosity, cracks, and slag inclusions are visible and may not need further inspection to require their removal. Small defects such as these can be verified by Liquid Penetrant Testing (Dye check). Slag inclusions and cracks just below the surface can be discovered by Magnetic Particle Inspection. Deeper defects can be detected using the Radiographic (X-rays) and/or Ultrasound (sound waves) testing techniques.
https://en.wikipedia.org/wiki?curid=25324417
504,320
1,360,196
Second generation systems (1970s) were all electronic designs based on vacuum tubes and transformer logic. Algorithms appear to be based on linear-feedback shift registers, perhaps with some non-linear elements thrown in to make them more difficult to cryptanalyze. Keys were loaded by placing a punched card in a locked reader on the front panel. The cryptoperiod was still usually one day. These systems were introduced in the late 1960s and stayed in use until the mid-1980s. They required a great deal of care and maintenance, but were not vulnerable to EMP. The discovery of the Walker spy ring provided an impetus for their retirement, along with remaining first generation systems.
https://en.wikipedia.org/wiki?curid=1042273
1,359,444
1,924,610
Well into the 20th century, many physicians had looked at obstetrics as an unnecessary medical specialty. As a result, medical schools did not cover childbirth in much detail, and medical students might graduate without having even witnessed the delivery of a baby. Distressed by this lack of attention, DeLee made teaching and mentoring important parts of his career. With a maternal mortality rate about one-quarter of the national average, DeLee's Chicago Lying-In Hospital became well-respected and influential, and medical students would travel across the country to gain some experience there. A young woman named Beatrice Edna Tucker came to Lying-In to complete her residency in 1929. Three years later, DeLee named Tucker director of the Chicago Maternity Center, where she worked for more than forty years and delivered an estimated 100,000 babies.
https://en.wikipedia.org/wiki?curid=40426211
1,923,506
11,691
By the early 1960s an experimental "learning machine" with punched tape memory, called Cybertron, had been developed by Raytheon Company to analyze sonar signals, electrocardiograms, and speech patterns using rudimentary reinforcement learning. It was repetitively "trained" by a human operator/teacher to recognize patterns and equipped with a "goof" button to cause it to re-evaluate incorrect decisions. A representative book on research into machine learning during the 1960s was Nilsson's book on Learning Machines, dealing mostly with machine learning for pattern classification. Interest related to pattern recognition continued into the 1970s, as described by Duda and Hart in 1973. In 1981 a report was given on using teaching strategies so that a neural network learns to recognize 40 characters (26 letters, 10 digits, and 4 special symbols) from a computer terminal.
https://en.wikipedia.org/wiki?curid=233488
11,686
1,712,936
The progress test is currently used by national progress test consortia in the United Kingdom, Italy, The Netherlands, in Germany (including Austria), and in individual schools in Africa, Saudi Arabia, South East Asia, the Caribbean, Australia, New Zealand, Sweden, Finland, UK, and the USA. The National Board of Medical Examiners in the USA also provides progress testing in various countries The feasibility of an international approach to progress testing has been recently acknowledged and was first demonstrated by Albano et al. in 1996, who compared test scores across German, Dutch and Italian medical schools. An international consortium has been established in Canada involving faculties in Ireland, Australia, Canada, Portugal and the West Indies.
https://en.wikipedia.org/wiki?curid=35032562
1,711,971
1,114,542
Since the existence of toroidal planets is strictly hypothetical, no empirical basis for protoplanetary formation has been established. One homolog is a synestia, a loosely connected doughnut-shaped mass of vaporized rock, proposed by Simon J. Lock and Sarah T. Stewart-Mukhopadhyay to have been responsible for the isotopic similarity in composition, particularly the difference in volatiles, of the Earth-Moon system that occurred during the early-stage process of formation, according to the leading giant-impact hypothesis. The computer modelling incorporated a smoothed particle hydrodynamics code for a series of overlapping constant-density spheroids to obtain the result of a transitional region with a corotating inner region connected to a disk-like outer region.
https://en.wikipedia.org/wiki?curid=68488098
1,113,974
1,521,727
Chambers isolated by filters are proper tools for accurate determination of chemotactic behavior. The pioneer type of these chambers was constructed by Boyden. The motile cells are placed into the upper chamber, while fluid containing the test substance is filled into the lower one. The size of the motile cells to be investigated determines the pore size of the filter; it is essential to choose a diameter which allows active transmigration. For modelling "in vivo" conditions, several protocols prefer coverage of filter with molecules of extracellular matrix (collagen, elastin etc.) Efficiency of the measurements was increased by development of multiwell chambers (e.g. NeuroProbe), where 24, 96, 384 samples are evaluated in parallel. Advantage of this variant is that several parallels are assayed in identical conditions.
https://en.wikipedia.org/wiki?curid=7265847
1,520,866
866,428
Many of the Burgundian dukes could afford to be extravagant in their taste. Philip the Good followed the example set earlier in France by his great-uncles including Jean, Duke of Berry by becoming a strong patron of the arts and commissioning a large number of artworks. The Burgundian court was seen as the arbiter of taste and their appreciation in turn drove demand for highly luxurious and expensive illuminated manuscripts, gold-edged tapestries and jewel-bordered cups. Their appetite for finery trickled down through their court and nobles to the people who for the most part commissioned local artists in Bruges and Ghent in the 1440s and 1450s. While Netherlandish panel paintings did not have intrinsic value as did for example objects in precious metals, they were perceived as precious objects and in the first rank of European art. A 1425 document written by Philip the Good explains that he hired a painter for the "excellent work that he does in his craft". Jan van Eyck painted the "Annunciation" while in Philip's employ, and Rogier van der Weyden became the duke's portrait painter in the 1440s.
https://en.wikipedia.org/wiki?curid=799881
865,968
951,382
Libyan SF.260s were used in the last phase of the conflict in Chad, the Toyota War, which started in December 1986. In February 1987, SF.260s were involved in attacks against FANT columns active in the area north of Faya-Largeau, using unguided rockets. Chadian MANPADS teams armed with FIM-43 Redeyes and 9K32 Strela-2s claimed to have shot down one LAAF SF.260 on 14 March near Fada. Five days later, when Chadian forces ambushed a Libyan armoured column, another SF.260 was shot down, either by Chadian-operated Redeyes or by FIM-92 Stingers operated by a French special forces team from the 11e régiment parachutiste de choc. Moreover, twelve SF.260s were lost when Chadian forces overran the airfield at Ouadi Doum on 21 March, including five captured intact. In an attempt to destroy as much of the captured equipment as possible, the Libyans heavily bombed the airfield from the air until late April. SF.260s were involved in these attacks. On 29 March, an SF.260 was claimed shot down by Chadian MANPADS north of Zouar. Lastly, in 1988, as Chad and Libya were negotiating a settlement for the conflict, pro-Libyan insurgents were infiltrated into Sudan, from where they started attacking garrisons inside Chad. They were often supported by SF.260s, and one of these was shot down on 28 November, and its crew captured.
https://en.wikipedia.org/wiki?curid=931256
950,878
1,914,919
The academy advocates for the needs of patients and physiatrists' ability to deliver the care they need. For example, iy works toward the long-term goal of passing legislation that will remove admissions quotas and return the physiatrist to the position of freely determining what type of rehabilitation is medically necessary for any given patient. In addition to its efforts as a national society, it places a priority on assisting physiatrists at the state level through grassroots advocacy on critical practice issues. The academy encourages members to be involved with their state PM&R societies to organize and develop a strong lobbying infrastructure. In addition, it co-ordinates member "Calls to Action" through its Advocacy Action Center.
https://en.wikipedia.org/wiki?curid=21095642
1,913,820
1,765,157
Though industry focus in the 1980s was on biotechnology, focus in the 1990s shifted to process engineering. While mainstream chromatographers were using 3μm particulate columns, sub-2μm columns were in research phase. The smaller particles meant better resolution and shorter run times; there was also an associated increase in backpressure. In order to withstand the pressure, a new field of chromatography came into being: UHPLC or UPLC- ultra high pressure liquid chromatography. The new instruments were able to endure pressures of up to , as opposed to conventional machines, which, as previously state, can hold up to . UPLC is an alternative solution to the same problems monolithic columns solve. Similarly to UPLC, monolith chromatography can help the bottom line by increasing sample throughput, but without the need to spend capital on new equipment.
https://en.wikipedia.org/wiki?curid=22131699
1,764,164
30,256
Indoor residual spraying is the spraying of insecticides on the walls inside a home. After feeding, many mosquitoes rest on a nearby surface while digesting the bloodmeal, so if the walls of houses have been coated with insecticides, the resting mosquitoes can be killed before they can bite another person and transfer the malaria parasite. As of 2006, the World Health Organization recommends 12 insecticides in IRS operations, including DDT and the pyrethroids cyfluthrin and deltamethrin. This public health use of small amounts of DDT is permitted under the Stockholm Convention, which prohibits its agricultural use. One problem with all forms of IRS is insecticide resistance. Mosquitoes affected by IRS tend to rest and live indoors, and due to the irritation caused by spraying, their descendants tend to rest and live outdoors, meaning that they are less affected by the IRS. Communities using insecticide treated nets, in addition to indoor residual spraying with 'non-pyrethroid-like' insecticides found associated reductions in malaria. Additionally, the use of 'pyrethroid-like' insecticides in addition to indoor residual spraying did not result in a detectable additional benefit in communities using insecticide treated nets.
https://en.wikipedia.org/wiki?curid=20423
30,246
1,349,329
After break up of Soviet Union, Kolchuga-M was modernized by the Special Radio Device Design Bureau public holding, the Topaz holding, the Donetsk National Technical University, the Ukrspetsexport state company, and the Investment and Technologies Company. It took them eight years (1993–2000) to conduct research, develop algorithms, test solutions on experimental specimens, and launch serial production. The relatively cheap Ukrainian Kolchuga-M passive radar station is able to detect and identify practically all known active radio devices mounted on ground, airborne, or marine objects.
https://en.wikipedia.org/wiki?curid=1296442
1,348,583
481,925
The plant is owned and operated by Constellation Energy and has two 2737 megawatt thermal (MWth) Combustion Engineering Generation II two-loop pressurized water reactors. Each generating plant (CCNPP 1&2) produces approximately 850 megawatt electrical (MWe) net or 900 MWe gross. Each plant's electrical load consumes approximately 50 MWe. These are saturated steam plants (non-superheated) and are approximately 33% efficient (ratio of 900 MWe gross/2700 MWth core). Only the exhaust of the single high-pressure main turbine is slightly superheated by a two-stage reheater before delivering the superheated steam in parallel to the three low-pressure turbines. Unit 1 uses a General Electric–designed main turbine and generator, while Unit 2 uses a Westinghouse–designed main turbine and generator. The heat produced by the reactor is returned to the bay, which operates as a cooling heat-sink for the plant.
https://en.wikipedia.org/wiki?curid=1800731
481,681
1,475,062
Eta Kappa Nu was founded in 1904 as an independent honor society for electrical engineering. It has expanded its scope through the years and it became an organizational unit within IEEE in 2010. Over 260 collegiate chapters have been chartered world-wide and more than 200,000 members have been elected to membership. These chapters recognize high scholarship through membership and foster a culture of service and volunteerism within their host departments. They are noted for student-led engagement with peers, faculty, and industry through tutoring, maker-space management, networking events, etc. Most members are inducted as students, but distinguished professionals may be inducted as well. The guiding ideals for membership eligibility of "scholarship", "character", and "attitude" have remained unchanged since the early years.
https://en.wikipedia.org/wiki?curid=1703584
1,474,230
1,483,141
When structures approach the size regime corresponding to molecular scaling lengths, new physical constraints are placed on the behavior of the fluid. For example, these physical constraints induce regions of the fluid to exhibit new properties not observed in bulk, "e.g." vastly increased viscosity near the pore wall; they may effect changes in thermodynamic properties and may also alter the chemical reactivity of species at the fluid-solid interface. A particularly relevant and useful example is displayed by electrolyte solutions confined in nanopores that contain surface charges, "i.e." at electrified interfaces, as shown in the nanocapillary array membrane (NCAM) in the accompanying figure.
https://en.wikipedia.org/wiki?curid=10172238
1,482,305
1,873,706
Jennifer received a bachelor's degree in Computer Science from Boston University in 2002 and an MS in Computer Science from Stanford University in 2004, where she conducted research for the first time while working with Stanford's Multiagent Group. She received an MSE and PhD in Computer and Information Science from the University of Pennsylvania in 2009 where she was mentored by Michael Kearns. During her time at UPenn, she interned with the Machine Learning and Microeconomics groups at Yahoo! Research, as well as the research group at Google. Her dissertation "Learning from collective preferences, behavior, and beliefs" introduced new theoretical learning models and algorithms for scenarios in which information is aggregated across a population. After receiving her PhD, she spent a year as a Computing Innovation Fellow at Harvard University, where she was involved with the EconCS group, the Theory of Computation group, and the Center for Research on Computation and Society. Prior to joining Microsoft Research in 2012, Jennifer was an Assistant Professor of Computer Science at the University of California, Los Angeles.
https://en.wikipedia.org/wiki?curid=69997667
1,872,629
911,252
Free-to-air DVB-T2 broadcasts on MUX1 (provided by the state-owned Radiocom) are available since June 2015 in Timișoara (UHF channel 21), Cluj-Napoca (UHF channel 26), Iasi (UHF channel 25), and Bucharest (UHF channel 30). The coverage will be extendend so that at the end of 2016, over 90% of the territory will be covered. For now (2015/06/30), only five channels are broadcast on MUX1: TVR1, TVR2, TVR News, TVR 3, and TVR HD, with plans to be extended to 14-16 SD and HD programs. Radiocom's MUX2 and MUX4 implementations will also start in 2016. Legacy DVB-T broadcasts are still available in Bucharest: 6 channels can be received on channels 54 and 59, but will be shut down eventually, being replaced by DVB-T2. TVR announced that TVR News and TVR 3 will be closed, and the fate of TVR HD, is uncertain. This will lower the number of channels available on DVB-T. On 2 July 2015, Kanal D Romania left the terrestrial platform. The only broadcast that remained on terrestrial except TVR is Antena 3, but it is unknown whether it will stay on DVB-T, will shift to DVB-T2 or completely leave terrestrial platform. This will lead to only 3 channels in DVB-T2, and with many TV sets that are only DVB-T compatible (most of sold models being equipped with digital cable tuner) to an unattractive terrestrial platform, and more and more people will subscribe to a cable provider, or a DTH operator in areas where there is no cable TV available.
https://en.wikipedia.org/wiki?curid=9194388
910,773
986,971
The design officially entered series production in February 2021. In April 2021, Saab Group delivered one aft section of T-7A aircraft to the Boeing St. Louis plant. On 24 July 2021, Saab had delivered the second aft section to the Boeing St. Louis plant. Boeing will splice Saab's aft section with the front section, fins, wings and tail assembly to become a complete test aircraft for use in the EMD’s flight test program. On completion of the Engineering and Manufacturing Development (EMD) phase, Saab's brand new facility in West Lafayette, Indiana will serve as the manufacturing hub for the T-7A Red Hawk’s aft section and sub-systems such as hydraulics, fuel systems and secondary power. Saab has developed new software for the T-7 to help provide for cheaper and faster development. The T-7A employed digital engineering that went from development to the first test flight within 36 months. The T-7A has an advanced and digitized production line that takes only 30 minutes to splice the aft section with the wings. The digital build process allows technicians to build the aircraft with minimal tooling and drilling during the assembly process.
https://en.wikipedia.org/wiki?curid=52653349
986,456
49,461
One example of this type of sexual size dimorphism is the bat "Myotis nigricans", (black myotis bat) where females are substantially larger than males in terms of body weight, skull measurement, and forearm length. The interaction between the sexes and the energy needed to produce viable offspring make it favorable for females to be larger in this species. Females bear the energetic cost of producing eggs, which is much greater than the cost of making sperm by the males. The fecundity advantage hypothesis states that a larger female is able to produce more offspring and give them more favorable conditions to ensure their survival; this is true for most ectotherms. A larger female can provide parental care for a longer time while the offspring matures. The gestation and lactation periods are fairly long in "M. nigricans", the females suckling their offspring until they reach nearly adult size. They would not be able to fly and catch prey if they did not compensate for the additional mass of the offspring during this time. Smaller male size may be an adaptation to increase maneuverability and agility, allowing males to compete better with females for food and other resources.
https://en.wikipedia.org/wiki?curid=197179
49,441
1,623,109
Per IUPAC, the term biaryl refers to an assembly of two aromatic rings joined by a single bond, starting with the simplest, biphenyl. Biaryls constitute an important structural motif of physical organic, synthetic, and catalytic interest—for instance, underlying the area of atropisomers in enantioselective synthesis—and they appear in many pharmaceutical, agrochemical, and materials (e.g. LCD) applications. The example of a coupling reaction reaction used in their preparation is an alternative to the traditional Suzuki and Stille cross-coupling reactions, and various catalysts have been employed for this transformation; Goossen et al. reported the formation of biaryls from palladium and copper-catalzyed cross-coupling reactions of an aryl or heteroaryl carboxylic acid and an aryl halide (I, Br, or Cl) in the presence of a base.
https://en.wikipedia.org/wiki?curid=36929630
1,622,193
1,367,176
The London specimen shows the animal had undergone an advanced state of decomposition after death, reflected in its missing parts including a foot, some fingers, and the head. Both wings are preserved with spread fan-like with distinct feather impressions. The left hindlimb is preserved complete with four clawed toes; only the upper and lower portions of the right leg remain. The femur, pelvis, and remaining phalanges, while relatively complete, are disarticulated and scattered across the plate. Because of this scattering of the hand bones, Owen erroneously described the hands as two-fingers originally; the animal's three fingers were only known for certainty upon discovery of the Berlin specimen. The London specimen's decomposition is estimated at being on the order of weeks, with a maximum "drifting time" estimated at 27 days. Weeks or months likely elapsed between time of deposition and burial.
https://en.wikipedia.org/wiki?curid=34483273
1,366,420
593,014
The Standard model of particle physics is the theory describing three of the four known fundamental forces (the electromagnetic, weak, and strong interactions, while omitting gravity) in the universe, as well as classifying all known elementary particles. It was developed in stages throughout the latter half of the 20th century, through the work of many scientists around the world, with the current formulation being finalized in the mid-1970s upon experimental confirmation of the existence of quarks. Since then, confirmation of the top quark (1995), the tau neutrino (2000), and the Higgs boson (2012) have added further credence to the Standard model. In addition, the Standard Model has predicted various properties of weak neutral currents and the W and Z bosons with great accuracy.
https://en.wikipedia.org/wiki?curid=512256
592,710
782,518
Natural selection is fundamental to evolutionary theory. Variants of hereditary traits which increase an organism's ability to survive and reproduce will be more greatly represented in subsequent generations, i.e., they will be "selected for". Thus, inherited behavioral mechanisms that allowed an organism a greater chance of surviving and/or reproducing in the past are more likely to survive in present organisms. That inherited adaptive behaviors are present in nonhuman animal species has been multiply demonstrated by biologists, and it has become a foundation of evolutionary biology. However, there is continued resistance by some researchers over the application of evolutionary models to humans, particularly from within the social sciences, where culture has long been assumed to be the predominant driver of behavior.
https://en.wikipedia.org/wiki?curid=27919
782,099
1,188,369
Daidzein (7-hydroxy-3-(4-hydroxyphenyl)-4H-chromen-4-one) is a naturally occurring compound found exclusively in soybeans and other legumes and structurally belongs to a class of compounds known as isoflavones. Daidzein and other isoflavones are produced in plants through the phenylpropanoid pathway of secondary metabolism and are used as signal carriers, and defense responses to pathogenic attacks. In humans, recent research has shown the viability of using daidzein in medicine for menopausal relief, osteoporosis, blood cholesterol, and lowering the risk of some hormone-related cancers, and heart disease. Despite the known health benefits, the use of both puerarin and daidzein is limited by their poor bioavailability and low water solubility.
https://en.wikipedia.org/wiki?curid=5063432
1,187,737
343,304
Around 1717, German polymath Johann Heinrich Schulze accidentally discovered that a slurry of chalk and nitric acid into which some silver particles had been dissolved was darkened by sunlight. After experiments with threads that had created lines on the bottled substance after he placed it in direct sunlight for a while, he applied stencils of words to the bottle. The stencils produced copies of the text in dark red, almost violet characters on the surface of the otherwise whitish contents. The impressions persisted until they were erased by shaking the bottle or until overall exposure to light obliterated them. Schulze named the substance "Scotophors" when he published his findings in 1719. He thought the discovery could be applied to detect whether metals or minerals contained any silver and hoped that further experimentation by others would lead to some other useful results. Schulze's process resembled later photogram techniques and is sometimes regarded as the very first form of photography.
https://en.wikipedia.org/wiki?curid=2435889
343,123
1,480,437
Several scientific studies have indicated that nanoparticles can cause a series of adverse physiological and cellular effects on plants including root length inhibition, biomass reduction, altered transpiration rate, developmental delay, chlorophyll synthesis disruption, cell membrane damage, and chromosomal aberration. Though genetic damage induced by metal nanoparticles in plants has been documented, the mechanism of that damage, its severity, and whether the damage is reversible remain active areas of study. Studies of CeO2 nanoparticles were shown to greatly diminish nitrogen fixation in the root nodules of soybean plants, leading to stunted growth. Positive charges on nanoparticles were shown to destroy the membrane lipid bilayers in animal cells and interfere with overall cellular structure. For animals, it has been shown that nanoparticles can provoke inflammation, oxidative stress, and modification of mitochondrial distribution. These effects were dose-dependent and varied by nanoparticle type.
https://en.wikipedia.org/wiki?curid=19079647
1,479,603
11,822
The CSM's electricity came from fuel cells that produced water as a byproduct, but the LM was powered by silver-zinc batteries which did not, so both electrical power and water (needed for equipment cooling as well as drinking) would be critical. LM power consumption was reduced to the lowest level possible; Swigert was able to fill some drinking bags with water from the CM's water tap, but even assuming rationing of personal consumption, Haise initially calculated they would run out of water for cooling about five hours before reentry. This seemed acceptable because the systems of Apollo 11's LM, once jettisoned in lunar orbit, had continued to operate for seven to eight hours even with the water cut off. In the end, Apollo 13 returned to Earth with of water remaining. The crew's ration was 0.2 liters (6.8 fl oz) of water per person per day; the three astronauts lost a total of among them, and Haise developed a urinary tract infection. This infection was probably caused by the reduced water intake, but microgravity and effects of cosmic radiation might have impaired his immune system's reaction to the pathogen.
https://en.wikipedia.org/wiki?curid=1770
11,817
1,621,657
During the second half of the 1800s, several military conflicts changed the balance of power in Europe and set off an arms race leading up to World War I. A company that profited from this arms race was the Friedrich Krupp Company of Essen Germany and several European countries were armed with Krupp artillery. Some customers like Belgium, Italy, Romania, and Russia imported and built Krupp designs under license while others like the Ottoman Empire and Bulgaria lacking industrial capacity imported Krupp weapons. In addition to Krupp, one of the most profitable companies during this period was the Grüsonwerke of Magdeburg Germany that specialized in casting large components like armored gun turrets. Grüson turrets armed with Krupp guns became a common feature of European fortifications built during the second half of the 1800s and their success led to Krupp purchasing the Grüsonwerke in 1892.
https://en.wikipedia.org/wiki?curid=67427716
1,620,741
1,377,830
Behavioral activation therapy emphasizes the role of the individual in creating treatment goals and engaging with their environment in a way that facilitates positive reinforcement. Treatment is typically intended to be brief, intense, and specific to the goals of the individual. Goals are specific and measurable, focusing on single avoidance behaviors. Patients keep activity logs to monitor the feelings associated with different activities and therapists assign graded homework to help patients accomplish their goals. Patients are encouraged to participate in activities that they find pleasurable and to avoid activities that generate feelings of depression. Engaging in more diverse and positively reinforcing activities will, over time, rebuild the individual's behavioral repertoire, providing more variability in their responses and actions. This variability has been linked to a decrease in depressive symptoms and to a typical behavioral profile. The ultimate goal is to engage the individual in a wide range of stable and meaningful reinforcers, consequently alleviating depressive symptoms.
https://en.wikipedia.org/wiki?curid=18550003
1,377,068
1,753,070
Dalhousie University was founded in 1818 by Lord Dalhousie, who modeled the university on the University of Edinburgh, although instruction would not actually begin until 1838. Unfortunately, 5 years later the university's first principal died and the university would remain closed until 1863, when it opened with 6 professors and 1 tutor. The Dalhousie University Act(1963) includes a suggestion of denominational representation on the Board of Governors in proportion to support of endowed chairs. By relying on private contributions, Dalhousie managed to avoid most of the instability of government grants and bureaucratic infighting. Dalhousie University degrees were not awarded until 1866. There were only 28 students who were in the degree program during this period and another 28 who were casual students. The school was consumed with financial difficulties, and it wasn't until 1879 that a wealthy New York publisher with Nova Scotian ancestry made a donation of over 8 million dollars and saved the university.
https://en.wikipedia.org/wiki?curid=17662960
1,752,081
1,112,180
Tonegawa's Nobel Prize work elucidated the genetic mechanism of the adaptive immune system, which had been the central question of immunology for over 100 years. Prior to Tonegawa's discovery, one early idea to explain the adaptive immune system suggested that each gene produces one protein; however, there are under 19,000 genes in the human body which nonetheless can produce millions of antibodies. In experiments beginning in 1976, Tonegawa showed that genetic material rearranges itself to form millions of antibodies. Comparing the DNA of B cells (a type of white blood cell) in embryonic and adult mice, he observed that genes in the mature B cells of the adult mice are moved around, recombined, and deleted to form the diversity of the variable region of antibodies. This process is known as V(D)J recombination.
https://en.wikipedia.org/wiki?curid=1080745
1,111,614
1,925,298
In contrast with applications that provide only momentary images, such as MRI and CT, the results of ACG procedures can be obtained continuously, thus facilitating effortless and non-invasive real-time monitoring. This can be especially helpful during the acute phase directly after a stroke or a traumatic brain injury. The measured data is mathematically processed continuously and displayed on a monitoring device. The computer-aided analysis of the signals enables the physician/nursing staff to precisely interpret the results immediately after device setup. Furthermore, ACG allows for preventive detection of pathological changes in brain tissue.
https://en.wikipedia.org/wiki?curid=48688802
1,924,194
496,201
The noise reduction coefficient (commonly abbreviated NRC) is a single number value ranging from 0.0 to 1.0 that describes the average sound absorption performance of a material. An NRC of 0.0 indicates the object does not attenuate mid-frequency sounds, but rather reflects sound energy. This is more conceptual than physically achievable: even very thick concrete walls will attenuate sound and may have an NRC of 0.05. Conversely, an NRC of 1.0 indicates that the material provides an acoustic surface area (in units sabin) that is equivalent to its physical, two-dimensional surface area. This rating is common of thicker, porous sound absorptive materials such as 2"-thick fabric-wrapped fiberglass panel. Materials can achieve NRC values greater than 1.00. This is a shortcoming of the test procedure and a limitation of how acousticians define a square unit of absorption, and not a characteristic of the material itself.
https://en.wikipedia.org/wiki?curid=796691
495,945
1,950,382
No proven cure exists for "C. serpentis", but some drugs, such as Paromomycin, have proven promising results in the treatment of captive King cobras ("Ophiophagus hannah"). Unfortunately, longer follow up studies with treatments in multiple individuals of other species, such as eastern indigo snakes saw the majority of animals test positive again with time. Also significantly more promising is the use of bovine colostrum, carefully administered to the snake via a stomach tube lubricated with vegetable oil, and accompanied by thorough weekly cleaning of the terrarium with 7% hydrogen peroxide in a well-ventilated area and with the use of goggles and gloves. However this treatment is generally not made available since the studies that produced it ended. Since snakes are ectothermic, higher temperatures have been correlated with an increased immune response, and may result in subsiding infection.
https://en.wikipedia.org/wiki?curid=67305858
1,949,261
142,051
Living organisms can produce magnetite. In humans, magnetite can be found in various parts of the brain including the frontal, parietal, occipital, and temporal lobes, brainstem, cerebellum and basal ganglia. Iron can be found in three forms in the brain – magnetite, hemoglobin (blood) and ferritin (protein), and areas of the brain related to motor function generally contain more iron. Magnetite can be found in the hippocampus. The hippocampus is associated with information processing, specifically learning and memory. However, magnetite can have toxic effects due to its charge or magnetic nature and its involvement in oxidative stress or the production of free radicals. Research suggests that beta-amyloid plaques and tau proteins associated with neurodegenerative disease frequently occur after oxidative stress and the build-up of iron.
https://en.wikipedia.org/wiki?curid=277295
141,993
586,467
About one in ten college teams help to generate a large net amount of revenue for their school, but the athletes are not personally rewarded for their contribution. This money is spread through administrators, athletic directors, coaches, media outlets, and other parties. None is given directly to the players. Collegiate athletics entails time-consuming, intense commitment to practice and play. Only some athletic scholarships are "full rides", and many student-athletes are not able to afford dining, entertainment, and even some educational expenses. Outside of summertime, when work is permitted, student-athletes have no extra time for work in addition to practice, training, and classes. Paying student-athletes would give the athletes an incentive to stay in school and complete their degree programs, rather than leave early for the professional leagues. They would be much less tempted to earn money by taking illegal payments and shaving points. By not paying their athletes, colleges avoid paying workmen's-compensation benefits to the "hundreds" of college athletes incapacitated by injuries each year. Furthermore, if an athlete receives a serious injury while on the field, the scholarship does not pay for the bill of the surgery.
https://en.wikipedia.org/wiki?curid=2181526
586,167
90,809
China's "Technology Daily" reported on 15 November 2008, that Dr. Li Hiu Yeung and his research group of New Concept Aircraft (Zhuhai) Co., Ltd. had successfully developed a bionic gecko robot named "Speedy Freelander". According to Dr. Yeung, the gecko robot could rapidly climb up and down a variety of building walls, navigate through ground and wall fissures, and walk upside-down on the ceiling. It was also able to adapt to the surfaces of smooth glass, rough, sticky or dusty walls as well as various types of metallic materials. It could also identify and circumvent obstacles automatically. Its flexibility and speed were comparable to a natural gecko. A third approach is to mimic the motion of a snake climbing a pole.
https://en.wikipedia.org/wiki?curid=20903754
90,769
1,859,091
Sulfur ejection from volcanoes has a tremendous impact environmental impact, and is important to consider when studying the large-scale effects of volcanism. Volcanoes are the primary source of the sulfur (in the form of SO) that ends up in the stratosphere, where it then reacts with OH radicals to form sulfuric acid (HSO). When the sulfuric acid molecules either spontaneously nucleate or condense on existing aerosols, they can grow large enough to form nuclei for raindrops and precipitate as acid rain. Rain containing elevated concentrations of SO kills vegetation, which then reduces the ability of the area's biomass to absorb CO from the air. It also creates a reducing environment in streams, lakes, and groundwater. [15] Because of its high reactivity with other molecules, increased sulfur concentrations in the atmosphere can lead to ozone depletion and start a positive warming feedback.
https://en.wikipedia.org/wiki?curid=31670958
1,858,023
724,117
In central nervous system structures, the glucocorticoid receptor is gaining interest as a novel representative of neuroendocrine integration, functioning as a major component of endocrine influence - specifically the stress response - upon the brain. The receptor is now implicated in both short and long-term adaptations seen in response to stressors and may be critical to the understanding of psychological disorders, including some or all subtypes of depression and post-traumatic stress disorder (PTSD). Indeed, long-standing observations such as the mood dysregulations typical of Cushing's disease demonstrate the role of corticosteroids in regulating psychologic state; recent advances have demonstrated interactions with norepinephrine and serotonin at the neural level.
https://en.wikipedia.org/wiki?curid=2995237
723,737
2,186,662
In the 1960s, a chamber orchestra existed at the Novosibirsk Electrotechnical Institute, led by Yulian Notanovich Faktorovich. The first rehearsals took place in February 1970 and by 20 April the ensemble gave its first public performance. The first members were the students of the Technical University, who finished at a 7-year music school. Later many teachers of music schools, students of different Novosibirsk Institutes, doctors, engineers and scientists joined the Ensemble. In 1975, the ensemble participated in a festival in Lviv, Ukraine, and since 1979, it has the title "People's" and gives annual concert in Novosibirsk Conservatory. In 1985 the ensemble went to Yerevan, Armenia, and was awarded the first prize at the Festival of Classic Music. The greatest success came in 1990 when at the first All-union Festival of Chamber and Symphony Orchestras the Ensemble was awarded the first prize. In 1990 the ensemble was invited to Germany to take part in the International Festival "Eurotreff" and had a great success that was followed by numerous publications in media. In 1993 the Ensemble took a trip to Thessaloniki, Greece, where gave a performance in final concert of the International Fair. The repertoire includes Bach and Vivaldi concerts, works by Brahms, Strauss, Kreisler, Dvorzak, Tchaikovsky, Rachmaninov, Shostakovich, Sviridov, Shedrin, Khachaturyan, all together more than 80. All of them are learned by heart that contributes to unity and artistic expression.
https://en.wikipedia.org/wiki?curid=35674487
2,185,414