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Emissions from ships have much more significant environmental effects; many ships go internationally from port to port and are not seen for weeks, contributing to air and water pollution on its voyage. Emission of greenhouse gases displaces the amount of gas that allows for UV-rays through the ozone. Sulfur and nitrogen compounds emitted from ship will oxidize in the atmosphere to form sulfate and nitrate. Emissions of nitrogen oxides, carbon monoxide, and volatile organic compounds (VOC) will lead to enhanced surface ozone formation and methane oxidation, depleting the ozone. The effect of the international ship emission on the distribution of chemical compounds such as NOx, CO, O, OH, SO, HNO, and sulfate is studied using a global chemical transport model (CTM), the Oslo CTM2. In particular, the large-scale distribution and diurnal variation of the oxidants and sulfur compounds are studied interactively. Meteorological data (winds, temperature, precipitation, clouds, etc.) used as input for the CTM calculations are provided by a weather prediction model.
https://en.wikipedia.org/wiki?curid=25406027
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Many, although not all post-processualists have adhered to the theory of structuralism in understanding historical societies. Structuralism itself was a theory developed by the French anthropologist Claude Lévi-Strauss (1908–2009), and held to the idea that "cultural patterns need not be caused by anything outside themselves… [and that] underlying every culture was a deep structure, or essence, governed by its own laws, that people were unaware of but which ensured regularities in the cultural productions that emanate from it." At the centre of his structuralist theory, Lévi-Strauss held that "all human thought was governed by conceptual dichotomies, or bilateral oppositions, such as culture/nature, male/female, day/night, and life/death. He believed that the principle of oppositions was a universal characteristic inherent in the human brain, but that each culture was based on a unique selection of oppositions". This structuralist approach was first taken from anthropology and applied into forms of archaeology by the French archaeologist André Leroi-Gourhan (1911–1986), who used it to interpret prehistoric symbols in his 1964 work, "Les Religions de la Préhistoire".
https://en.wikipedia.org/wiki?curid=160139
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Some of the earliest experiments in aerial refueling took place in the 1920s; two slow-flying aircraft flew in formation, with a hose run down from a hand-held fuel tank on one aircraft and placed into the usual fuel filler of the other. The first mid-air refueling, based on the development of Alexander P. de Seversky, between two planes occurred on June 27, 1923, between two Airco DH-4B biplanes of the United States Army Air Service. An endurance record was set by three DH-4Bs (a receiver and two tankers) on August 27–28, 1923, in which the receiver airplane remained aloft for more than 37 hours using nine mid-air refuelings to transfer of aviation gasoline and of engine oil. The same crews demonstrated the utility of the technique on October 25, 1923, when a DH-4 flew from Sumas, Washington, on the Canada–United States border, to Tijuana, Mexico, landing in San Diego, using mid-air refuelings at Eugene, Oregon, and Sacramento, California.
https://en.wikipedia.org/wiki?curid=237949
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Other factors such as mutations, genetic drift and natural and artificial selection have also played a role in shaping the diversity of livestock populations. As animal populations migrated away from their original sites of domestication, sub-populations were formed through geographic and genetic isolation. Interbreeding within these sub-populations between individuals that thrived in the local prevailing environmental conditions (and were thus better able to reproduce) contributed to the formation of distinct groups of animals, known as breeds. This isolation of sub-populations allowed the simultaneous increase in diversification between these sub-populations and increase in uniformity within them. Human intervention through artificial selection of animals with desirable characteristics further increased the differentiation among and uniformity within breeds. Examples of traits that have been deliberately selected by humans include growth rate, milk or egg production, coat color, meat quality, and age of maturity, among many others. The process of artificial selection has been the main reason for gains in output from commercial breeds, whereas the adaptation of indigenous livestock to diverse and challenging environments (natural selection) has been the main factor for their continued survival and production value. Overall, selection, whether it be natural or artificial, "generally" results in reduced genetic variation.
https://en.wikipedia.org/wiki?curid=51678199
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Arguments in support of a genetic explanation of racial differences in average IQ are sometimes fallacious. For instance, some hereditarians have cited as evidence the failure of known environmental factors to account for such differences, or the high heritability of intelligence within races. Jensen and Rushton, in their formulation of Spearman's Hypothesis, argued that cognitive tasks that have the highest "g"-load are the tasks in which the gap between black and white test takers is greatest, and that this supports their view that racial IQ gaps are in large part genetic. However, in separate reviews, Mackintosh, Nisbett "et al". and Flynn have all concluded that the slight correlation between "g"-loading and the test score gap offers no clue to the cause of the gap. Further reviews of both adoption studies and racial admixture studies have also found no evidence for a genetic component behind group-level IQ differences. Hereditarian arguments for racial differences in IQ have been criticized from a theoretical point of view as well. For example, the geneticist and neuroscientist Kevin Mitchell has argued that "systematic genetic differences in intelligence between large, ancient populations" are "inherently and deeply implausible" because the "constant churn of genetic variation works against any long-term rise or fall in intelligence." As he argues, "To end up with systematic genetic differences in intelligence between large, ancient populations, the selective forces driving those differences would need to have been enormous. What's more, those forces would have to have acted across entire continents, with wildly different environments, and have been persistent over tens of thousands of years of tremendous cultural change."
https://en.wikipedia.org/wiki?curid=4868935
180,020
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During the Han Dynasty (202 BC–220 AD), the government established ironworking as a state monopoly (repealed during the latter half of the dynasty and returned to private entrepreneurship) and built a series of large blast furnaces in Henan province, each capable of producing several tons of iron per day. By this time, Chinese metallurgists had discovered how to fine molten pig iron, stirring it in the open air until it lost its carbon and could be hammered (wrought). (In modern Mandarin-Chinese, this process is now called "chao", literally stir frying; pig iron is known as 'raw iron', while wrought iron is known as 'cooked iron'.) By the 1st century BC, Chinese metallurgists had found that wrought iron and cast iron could be melted together to yield an alloy of intermediate carbon content, that is, steel. According to legend, the sword of Liu Bang, the first Han emperor, was made in this fashion. Some texts of the era mention "harmonizing the hard and the soft" in the context of ironworking; the phrase may refer to this process. The ancient city of Wan (Nanyang) from the Han period forward was a major center of the iron and steel industry. Along with their original methods of forging steel, the Chinese had also adopted the production methods of creating Wootz steel, an idea imported from India to China by the 5th century AD. During the Han Dynasty, the Chinese were also the first to apply hydraulic power (i.e. a waterwheel) in working the bellows of the blast furnace. This was recorded in the year 31 AD, as an innovation by the Chinese mechanical engineer and politician Du Shi, Prefect of Nanyang. Although Du Shi was the first to apply water power to bellows in metallurgy, the first drawn and printed illustration of its operation with water power appeared in 1313 AD, in the Yuan Dynasty era text called the "Nong Shu".
https://en.wikipedia.org/wiki?curid=8483830
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The unique plantigrade alignment of the human foot results in a distal-limb structure that can adapt to a variety of conditions. The less mobile and more robust tarsal bones are shaped and aligned to accept and transmit large loads during the early phases of stance (initial contact and loading response phases of walking, and inadvertent heel strikes during running). The tarsals of the midfoot, which are smaller and shorter than the hindfoot tarsals, appear well oriented to transmit loads between the hindfoot and forefoot; this is necessary for load transfer and locking of the foot complex into a rigid lever for late stance phase. Conversely, the midfoot bones and joints also allow for the transmission of loads and inter-joint movement that unlocks the foot to create a loosely packed structure which renders the foot highly compliant over a variety of surfaces. In this configuration, the foot is able to absorb and damp the large loads encountered during heel strike and early weight acceptance. The forefoot, with its long metatarsal and relatively long phalanges, transmits loads during the end-of-stance phase that facilitate the push-off and transfer of forward momentum. The forefoot also serves as a lever to allow balance during standing and jumping. In addition, the arches of the foot that span the hindfoot, midfoot and forefoot play a critical role in the nature of transformation of the foot from a rigid lever to a flexible weight-accepting structure.
https://en.wikipedia.org/wiki?curid=22633377
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His first area of research examines how cultural groups and their individual members adapt their customs and behaviours to the ecological contexts in which they have developed and now live. This perspective has been captured in his development of the "ecocultural perspective", which seeks to explain how individuals develop and acquire their behavioural repertoire in various ecological contexts and cultures. This perspective links the habitat of a cultural group to their social institutions and practices (such as their settlement style, social stratification, and socialisation practices), and thence to the development of a variety of behaviours of individual members of these cultural groups (including perception, cognition and social behaviours). The focus of much of this research has been with indigenous peoples in Africa, the Arctic and Asia, contrasting groups with hunting, agricultural and urban life styles. He has published research books on this topic between 1976 and 2017. In carrying out this work, the use of the comparative method has been central. This method has required the development of the concepts of "imposed etic, emic," and "derived etic" as ways to identify the methods used when making cross-cultural comparisons.
https://en.wikipedia.org/wiki?curid=37841413
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Proportional counters in the form of large area planar detectors are used extensively to check for radioactive contamination on personnel, flat surfaces, tools, and items of clothing. This is normally in the form of installed instrumentation because of the difficulties of providing portable gas supplies for hand-held devices. They are constructed with a large area detection window made from such as metalized mylar which forms one wall of the detection chamber and is part of the cathode. The anode wire is routed in a convoluted manner within the detector chamber to optimize the detection efficiency. They are normally used to detect alpha and beta particles, and can enable discrimination between them by providing a pulse output proportional to the energy deposited in the chamber by each particle. They have a high efficiency for beta, but lower for alpha. The efficiency reduction for alpha is due to the attenuation effect of the entry window, though distance from the surface being checked also has a significant effect, and ideally a source of alpha radiation should be less than 10mm from the detector due to attenuation in air.
https://en.wikipedia.org/wiki?curid=1041214
479,197
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During the breeding season, female wolves secrete substances from the vagina, which communicate the females' reproductive state, and can be detected by males from long distances. Urine marking is the best-studied means of olfactory communication in wolves. Its exact function is debated, though most researchers agree that its primary purpose is to establish boundaries. Wolves urine mark more frequently and vigorously in unfamiliar areas, or areas of intrusion, where the scent of other wolves or canids is present. So-called raised leg urination (RLU) is more common in male wolves than in females, and may serve the purpose of maximizing the possibility of detection by conspecifics, as well as reflect the height of the marking wolf. Only dominant wolves typically use RLU, with subordinate males continuing to use the juvenile standing posture throughout adulthood. RLU is considered to be one of the most important forms of scent communication in the wolf, making up 60–80% of all scent marks observed. Their urine contains pyrazine analogs that act as kairomones, repelling their prey.
https://en.wikipedia.org/wiki?curid=61366571
1,049,415
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Although the influence of the prior language when a community speaks (and adopts) a new one may have been informally acknowledged beforehand, the concept was formalized and popularized initially in the late 19th century. As historical phonology emerged as a discipline, the initial dominant viewpoint was that influences from language contact on phonology and grammar should be assumed to be marginal, and an internal explanation should always be favored if possible; as articulated by Max Mueller in 1870, ("there are no mixed languages"). However, in the 1880s, dissent began to crystallize against this viewpoint. Within Romance language linguistics, the 1881 "Lettere glottologiche" of Graziadio Isaia Ascoli argued that the early phonological development of French and other Gallo-Romance languages was shaped by the retention by Celts of their "oral dispositions" even after they had switched to Latin. The related but distinct concept of creole languages was used to counter Mueller's view in 1884, by Hugo Schuchardt. In modern historical linguistics, debate persists on the details of how language contact may induce structural changes, but the respective extremes of "all change is contact" and "there are no structural changes ever" have largely been abandoned in favor of a set of conventions on how to demonstrate contact induced structural changes, which includes adequate knowledge of the two languages in question, a historical explanation, and evidence that the contact-induced phenomenon did not exist in the recipient language before contact, among other guidelines.
https://en.wikipedia.org/wiki?curid=583461
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This technique is similar to Single Particle Inductively Coupled Plasma Mass Spectroscopy (SP ICP-MS)discovered by Degueldre and Favarger (2003) and adapted later for other nanoparticles e.g. gold colloids, see Degueldre et al (2006). The SP ICP-MS was adapted for the analysis of Single Virus Inductively Coupled Plasma Mass Spectroscopy (SV ICPMS) in a comprehensive study i.e. Degueldre (2021). This study suggests to adapting this method for single viruses (SV) identification and counting. With high resolution multi-channel sector field (MC SF) ICP-MS records in SV detection mode, the counting of master and key ions can allow analysis and identification of single viruses. The counting of 2-500 virial units can be performed in 20 s. Analyses are proposed to be carried out in Ar torch for master ions: 12C+, 13C+, 14N+, 15N+, and key ions 31P+, 32S+, 33S+ and 34S+. All interferences are discussed in detail. The use of high resolution MC ICP-MS is recommended while options with anaerobic/aerobic atmospheres are explored to upgrade the analysis when using quadrupole ICP-MS. Application for two virus types (SARS-COV2 and bacteriophage T5) is investigated using time scan and fixed mass analysis for the selected virus ions allowing characterisation of the species using the N/C, P/C and S/C molar ratio's and quantification of their number concentration.
https://en.wikipedia.org/wiki?curid=26069912
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The outbreak of the American Civil War in April 1861 caused a dramatic shift in direction for the Coast Survey. All U.S. Army officers were withdrawn from the Survey, as were all but two U.S. Navy officers. Since most men of the Survey had Union sympathies, all but seven of them stayed on with the Survey rather than resigning to serve the Confederate States of America, and their work shifted in emphasis to support of the Union Navy and Union Army. Civilian Coast Surveyors were called upon to serve in the field and provide mapping, hydrographic, and engineering expertise for Union forces. One of the individuals who excelled at this work was Joseph Smith Harris, who supported Rear Admiral David G. Farragut and his Western Gulf Blockading Squadron in the Battle of Forts Jackson and St. Philip in 1862; this survey work was particularly valuable to Commander David Dixon Porter and his mortar bombardment fleet. Coast Surveyors served in virtually all theaters of the war and were often in the front lines or in advance of the front lines carrying out mapping duties, and Coast Survey officers produced many of the coastal charts and interior maps used by Union forces throughout the war. Coast Surveyors supporting the Union Army were given assimilated military rank while attached to a specific command, but those supporting the U.S. Navy operated as civilians and ran the risk of being executed as spies if captured by the Confederates while working in support of Union forces.
https://en.wikipedia.org/wiki?curid=16021406
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Greengard's research focused on events inside the neuron caused by neurotransmitters. Specifically, Greengard and his fellow researchers studied the behavior of second messenger cascades that transform the docking of a neurotransmitter with a receptor into permanent changes in the neuron. In a series of experiments, Greengard and his colleagues showed that when dopamine interacts with a receptor on the cell membrane of a neuron, it causes an increase in cyclic AMP inside the cell. This increase of cyclic AMP, in turn activates a protein called protein kinase A, which turns other proteins on or off by adding phosphate groups in a reaction known as phosphorylation. The proteins activated by phosphorylation can then perform a number of changes in the cell: transcribing DNA to make new proteins, moving more receptors to the synapse (and thus increasing the neuron's sensitivity), or moving ion channels to the cell surface (and thus increasing the cell's excitability). He shared the 2000 Nobel Prize in Physiology or Medicine with Arvid Carlsson and Eric Kandel for his work on the central regulatory protein DARPP-32.
https://en.wikipedia.org/wiki?curid=896294
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In January 2011 it was reported by the "Financial Times" that when the decision was taken to scrap the aircraft, "[The MRA4] was still riddled with flaws... Safety tests conducted [in 2010] found there were still 'several hundred design non-compliances' with the aircraft. It was unclear, for example, whether its bomb bay doors functioned properly, whether its landing gear worked and, most worryingly, whether its fuel pipe was safe." According to "Air Forces Monthly" magazine, "significant aerodynamic issues and associated flying control concerns in certain regimes of flight meant that it was grounded at the time of cancellation and may not have been signed over as safe by the Military Aviation Authority." The magazine also stated that the reason for the cancellation was that the RAF and Navy placed a higher priority on fast jets and frigates than on maritime patrol.
https://en.wikipedia.org/wiki?curid=29573970
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Debiasing is the reduction of bias, particularly with respect to judgment and decision making. Biased judgment and decision making is that which systematically deviates from the prescriptions of objective standards such as facts, logic, and rational behavior or prescriptive norms. Biased judgment and decision making exists in consequential domains such as medicine, law, policy, and business, as well as in everyday life. Investors, for example, tend to hold onto falling stocks too long and sell rising stocks too quickly. Employers exhibit considerable discrimination in hiring and employment practices, and some parents continue to believe that vaccinations cause autism despite knowing that this link is based on falsified evidence. At an individual level, people who exhibit less decision bias have more intact social environments, reduced risk of alcohol and drug use, lower childhood delinquency rates, and superior planning and problem solving abilities.
https://en.wikipedia.org/wiki?curid=48258936
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Hebern was so convinced of the future success of the system that he formed the Hebern Electric Code company with money from several investors. Over the next few years he repeatedly tried to sell the machines both to the US Navy and Army, as well as to commercial interests such as banks. None was terribly interested, as at the time cryptography was not widely considered important outside governments. It was probably because of William F. Friedman's confidential analysis of the Hebern machine's weaknesses (substantial, though repairable) that its sales to the US government were so limited; Hebern was never told of them. Perhaps the best indication of a general distaste for such matters was the statement by Henry Stimson in his memoirs that "Gentlemen do not read each other's mail." It was Stimson, as Secretary of State under Hoover, who withdrew State Department support for Herbert Yardley's American Black Chamber, leading to its closing.
https://en.wikipedia.org/wiki?curid=194839
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Bloodstain pattern analysis has been used informally for centuries, but the first modern study of blood stains was in 1895. Dr. Eduard Piotrowski of the University of Kraków published a paper titled "On the formation, form, direction, and spreading of blood stains after blunt trauma to the head." He conducted his first experiments on rabbits. A number of publications describing various aspects of blood stains were published, but his publication did not lead to a systematic analysis. LeMoyne Snyder's widely used book "Homicide Investigation" (first published in 1941 and updated occasionally through at least the 1970s) also briefly mentioned details that later bloodstain experts would expand upon (e.g., that blood dries at a relatively predictable rate; that arterial blood is a brighter red color than other blood; that bloodstains tend to fall in certain patterns based on the motion of an attacker and victim). A 1952 episode of the police procedural radio series "Dragnet" made reference to bloodstain pattern analysis to reconstruct a shooting incident.
https://en.wikipedia.org/wiki?curid=2782331
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"Microascus brevicaulis" is a common mold. When cultured at a temperature of 25 °C on potato dextrose agar it forms white colonies which become powdery and/or granular as they mature. Under such conditions the fungus can grow rapidly, expanding as much as 4.5 - 5.5 cm within one week. The hyphae of "M. brevicaulis" are hyaline (transparent) and septate (separated into segments by cross-walls). The anamorph has conidia that are flattened on the base and tapered at the apex, resembling a boat keel in cross-section or a pontifical mitre. The conidia are produced in chains from cells known as annelides, phialide-like cells that elongate with each successive conidium produced. These, in turn, range from solitary to arranged in complex broom-like clusters on fertile hyphae known as conidiophores. The fungus is a typical perithecial member of Phylum Ascomycota, producing minute, enclosed fruiting bodies containing sexual spores (ascospores) in sacs known as asci. The ascospores of "M. brevicaulis" are kidney-shaped and reddish-brown in colour.
https://en.wikipedia.org/wiki?curid=40927829
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ETSU's Five Star Series brought many prestigious artists and creative minds to campus, including author Alex Haley as well as actors Larry Linville and Vincent Price. Its Sam Rayburn Symposium likewise featured prominent politicians and scholars, including Lady Bird Johnson, former Speaker of the United States House of Representatives John William McCormack, Congressman Ray Roberts, and Speaker of the House Jim Wright. The football team won the NAIA national championship in 1972, while Lion football players such as Autry Beamon, Harvey Martin, Dwight White, and Wade Wilson went on to star in the National Football League (NFL). The men's tennis team won the 1972 and 1978 NAIA national championships, while future Olympian John Carlos competed for the men's track team in 1966–67. After the passage of Title IX in 1972, ETSU fielded women's teams in basketball, tennis, track, and volleyball, with the volleyball team achieving the most success during the period.
https://en.wikipedia.org/wiki?curid=49751816
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The pharmacophore model for TRPV1 antagonists consists of three essential features: a hydrogen-bond acceptor, a hydrogen-bond donor, and a ring feature. In addition, the TRPV1 antagonists have been superimposed in such a way that they could fit in the volume of the TRPV1 pore. When the homology model is considered, appropriate interaction sites are found in the receptor pore. The hydrogen-bond acceptor on the ligand is proposed to interact with Tyr 667 (helix S6) on the receptor as a hydrogen-bond donor, and the hydrogen-bond donor on the ligand is proposed to interact with Tyr 667 on the opposite monomer of the tetramer on the receptor as a hydrogen-bond acceptor. The ring feature of the pharmacophore is proposed to fit in the hydrophobic space formed by the aromatic rings of the four Tyr 667 residues of the four monomers. Consistent with the critical role played by Tyr 667 in the interaction with key elements of the TPRV1 antagonist pharmacophore, site-directed mutagenesis studies have shown that exchanging this tyrosine for alanine in the rat TRPV1 receptor abolishes functional activity of TRPV1. The lipophilic end in antagonist is varied in character and volume and interacts with the lower end of transmembrane helices S5 and S6. Because the intracellular ends of these helices extend past the membrane, they are likely to be flexible and may be part of the channel opening and closing process. The combined use of a pharmacophore model, assembled from highly optimized TRPV1 antagonists, with a homology model of the protein has enhanced understanding of the observed structure–activity relationships of many series of current TRPV1 antagonists, and should be useful in the discovery of new classes of antagonists.
https://en.wikipedia.org/wiki?curid=24763498
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About 75 corporate, government and not-for-profit organizations are located on Centennial Campus. In order to lease space on the property, a prospective "partner" must have some programmatic connection to NC State, such as collaborative research with a faculty member or the use of students for internships or part-time work. Currently, about one-third of the partners are start-up or early stage companies, many located in Centennial's co-working incubator, Raleigh Founded. Another 20% are research and development units of large corporations and the rest are small businesses, state and federal agencies, and non-profits. Current partners include, Hitachi Energy, U.S. Department of Agriculture, IBM, LexisNexis and the National Weather Service's regional office. Centennial Campus is also home to the Centennial Campus Magnet Middle School, a Wake County public magnet school with 600 students.
https://en.wikipedia.org/wiki?curid=8239038
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On 31 March—just a fortnight after his arrival in Australia—MacArthur sent Casey and his air officer, Brigadier General Harold H. George to survey the situation in Port Moresby. They drew up plans to develop it into a base to support future operations. They recognised that to secure the area required work far beyond its environs. They called for the airfield at Horn Island to be upgraded, and new airfields to be constructed on the Cape York Peninsula north of Townsville around Mareeba, Cooktown and Coen. This would allow ships to have fighter cover crossing the Torres Strait. To protect Port Moresby's eastern flank, GHQ decided to establish an airstrip in the Abau–Mullins Harbour area. Milne Bay was subsequently determined to be a better location, and a garrison was sent by sea from Port Moresby on 22 June. Another strip, at Merauke on the south coast of Dutch New Guinea, was authorised on 22 June to protect the western flank.
https://en.wikipedia.org/wiki?curid=51118476
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A variety of disparate factors have influenced the abundance and distribution patterns of chironomids in recent history. Therefore, it is important to be careful when making broader interpretations from their fossil records. The impact of temperature on chironomid abundance and diversity, along with other associated factors, has recently been debated. Accurate interpretations of chironomid fossil records must consider a wide array of associated factors within the ecosystem. In order to understand the different forces that have been affecting the fossil data of a lake, it is important to reconstruct the physical, chemical, and nutrient content that actually shape the lake communities. Their distribution and abundance are highly influenced by the combination of human disturbance and changes in climate, both of which influence the catchment area that resulted in changing vegetation, hydrology, and nutrient cycles. Any change at the regional level, especially temperature, affects local water quality and then ultimately has a species-specific effect on habitat.
https://en.wikipedia.org/wiki?curid=4635545
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One approach to mitigation originally suggested by Daniel Kahneman and Amos Tversky, expanded upon by others, and applied in real-life situations, is reference class forecasting. This approach involves three steps: with a specific project in mind, identify a number of past projects that share a large number of elements with the project under scrutiny; for this group of projects, establish a probability distribution of the parameter that is being forecast; and, compare the specific project with the group of similar projects, in order to establish the most likely value of the selected parameter for the specific project. This simply stated method masks potential complexity regarding application to real-life projects: few projects are characterizable by a single parameter; multiple parameters exponentially complicates the process; gathering sufficient data on which to build robust probability distributions is problematic; and, project outcomes are rarely unambiguous and their reportage is often skewed by stakeholders' interests. Nonetheless, this approach has merit as part of a cognitive bias mitigation protocol when the process is applied with a maximum of diligence, in situations where good data is available and all stakeholders can be expected to cooperate.
https://en.wikipedia.org/wiki?curid=35099585
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Adams began working on "Dwarf Fortress" in October 2002, estimating that the project would take two months, but suspended development soon after, in order to finish his previous work, "Armok". He explained that it began like the 1982 arcade game "Dig Dug". The Adams brothers started the Bay 12 Games company, launching its website and releasing their games online. "Armok" became harder to maintain due to him focusing on adding features to "Dwarf Fortress" instead, in addition to its inferior code and 3D graphics. By 2004, Adams announced on his website that he would be switching his main project to "Dwarf Fortress" after he struggled to continue working on it. Adams explained that it would be a simulation game with dwarves but kept Adventurer mode as a surprise feature, which was revealed during its release. At that time, his fan base consisted of a few dozen people and more came in when he made this announcement. He put up a PayPal button after a request from a fan; similarly, a subscriber system was added later. In the next five months, they made around $300, which brought in only enough to cover the site's $20 hosting cost. He dubbed the game "Slaves to Armok, God of Blood II: Dwarf Fortress"; Adams explained that it was a sequel because it continued to work on much of "Armok's" code but said its cumbersome name was mostly "for kicks."
https://en.wikipedia.org/wiki?curid=7239234
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"Belgica"s voyage marked the beginning of what became known as the Heroic Age of Antarctic Exploration, and was rapidly followed by expeditions from the United Kingdom, Sweden, Germany and France. However, on his return to Norway in 1899, Amundsen turned his attention northwards. Confident in his abilities to lead an expedition, he planned a traversal of the Northwest Passage, the then-uncharted sea route from the Atlantic to the Pacific through the labyrinth of north Canadian islands. Having earned his master's ticket, Amundsen acquired a small sloop, "Gjøa", which he adapted for Arctic travel. He secured the patronage of King Oscar of Sweden and Norway, the support of Nansen, and sufficient financial backing to set out in June 1903 with a crew of six. The voyage lasted until 1906 and was wholly successful; the Northwest Passage, which defeated mariners for centuries, was finally conquered. At the age of 34 Amundsen became a national hero, in the first rank of polar explorers.
https://en.wikipedia.org/wiki?curid=15021680
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"Sternotherus odoratus" are predominantly aquatic, bottom feeders, but they are known to feed at the surface, and forage on land on occasion. Eastern musk turtles typically walk on the bottom of waterways with their necks extended searching for food, probing their heads into sand, mud, and decaying vegetation. An Oklahoma study found them to be euryphagous with seasonal changes in the diet, and food preferences directly related to availability, taking more animal food in the summer and plant material in the winter. Vegetation is a smaller, but consistent portion of the diet. Stomach and colon contents from 68 specimens were analyzed revealing 97.4% of the individuals had aquatic vegetation, comprising 20.4% of the volume. Missouri populations of "S. odoratus" were studied and found monthly, seasonal, and sexual differences in dietary preferences, in part due to sexual differences in peak activity and reproductive conditions. The study refuted the idea that "S. odoratus" are simply dietary generalists and that fluctuations in food availability, density, seasonal variation, and reproductive conditions influence their diet. Another study in Florida found the absence, or presents and competition, between other musk turtle species can influence the diet.
https://en.wikipedia.org/wiki?curid=5549825
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It is important to remember that during Classical Antiquity, anyone could be trained as a doctor at one of the many medical schools/hospitals, the Asclepeieon. Training involved mainly practical applications as well as forming an apprenticeship to other doctors. During the Hellenistic era, the Library of Alexandria also served as a medical school, where research and training would take place on the body of the diseased. It also appears that the children, male or female, of famous doctors, would also follow the medical profession, continuing the family tradition. For example, Pantheia, who was the wife of a physician, became one herself, a pattern also seen in the careers of Aurelia Alexandria Zosime and Auguste. Auguste received recognition as a chief doctor of her city, a title her husband also received. Metilia Donata was prominent enough to commission a large public building in Lyon. Anthiochis of Tlos, the daughter of a prominent physician, Diodotus, was recognized by the council of Tlos for her work as a doctor and had a statue of herself erected. She was also a widely discussed expert cited by Galen and others. Aspasia is quoted extensively by Aetius on gynecology.
https://en.wikipedia.org/wiki?curid=20517149
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Early detection and accurate diagnosis are important, as vascular dementia is at least partially preventable. Ischemic changes in the brain are irreversible, but the patient with vascular dementia can demonstrate periods of stability or even mild improvement. Since stroke is an essential part of vascular dementia, the goal is to prevent new strokes. This is attempted through reduction of stroke risk factors, such as high blood pressure, high blood lipid levels, atrial fibrillation, or diabetes mellitus. Meta-analyses have found that medications for high blood pressure are effective at prevention of pre-stroke dementia, which means that high blood pressure treatment should be started early. These medications include angiotensin converting enzyme inhibitors, diuretics, calcium channel blockers, sympathetic nerve inhibitors, angiotensin II receptor antagonists or adrenergic antagonists. Elevated lipid levels, including HDL, were found to increase risk of vascular dementia. However, six large recent reviews showed that therapy with statin drugs was ineffective in treatment or prevention of this dementia. Aspirin is a medication that is commonly prescribed for prevention of strokes and heart attacks; it is also frequently given to patients with dementia. However, its efficacy in slowing progression of dementia or improving cognition has not been supported by studies. Smoking cessation and Mediterranean diet have not been found to help patients with cognitive impairment; physical activity was consistently the most effective method of preventing cognitive decline.
https://en.wikipedia.org/wiki?curid=227181
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British troops of the Honourable Artillery Company (HAC) conducted a field exercise together for the first time with Japanese GSDF soldiers in Oyama, Shizuoka prefecture on 2 October 2018. This also marked the first time in history that foreign soldiers other than Americans have had field exercises on Japanese soil. The purpose was to improve their strategic partnership and security cooperation. The JGSDF and the Indian Army conducted their first joint military exercise in the Indian state of Mizoram from 27 October to 18 November 2018, practicing anti-terror drills and improving bilateral cooperation between 60 Japanese and Indian officers. From 29 October to 2 November 2018, Japan and the United States conducted the largest military exercise around Japan to date, known as Keen Sword. It included 57,000 sailors, marines and airmen. Of those, 47,000 service members were from the JSDF and 10,000 from the U.S. Armed Forces. A naval supply ship and frigate of the Royal Canadian Navy also participated. There were simulations of air combat, ballistic missile defense, and amphibious landings.
https://en.wikipedia.org/wiki?curid=2785204
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The TSR-2 was to be powered by two Bristol-Siddeley Olympus reheated turbojets, advanced variants of those used in the Avro Vulcan. The Olympus would be further developed and would power the supersonic Concorde. The design featured a small shoulder-mounted delta wing with down-turned tips, an all-moving swept tailplane and a large all-moving fin. Blown flaps were fitted across the entire trailing edge of the wing to achieve the short takeoff and landing requirement, something that later designs would achieve with the technically more complex swing-wing approach. No ailerons were fitted, control in roll instead being implemented by differential movement of the slab tailplanes. The wing loading was high for its time, enabling the aircraft to fly at very high speed and low level with great stability without being constantly upset by thermals and other ground-related weather phenomena. The EE Chief Test Pilot, Wing Commander Roland Beamont, favourably compared the TSR-2's supersonic flying characteristics to the Canberra's own subsonic flight characteristics, stating that the Canberra was more troublesome.
https://en.wikipedia.org/wiki?curid=225702
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1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 Nbd7 6. Nf3 O-O 7. Rc1 c6 8. Bd3 h6 9. Bh4 dxc4 10. Bxc4 b5 11. Bd3 a6 12. e4 Nxe4 13. Bxe4 Bxh4 14. Bxc6 Ra7 15. O-O Nb6 16. Ne4 Be7 17. Ne5 Rc7 18. Qd3 Nc4 19. Nxc4 Rxc6 20. Ne5 Rxc1 21. Rxc1 Bb7 22. Nc5 Bxc5 23. Rxc5 Qd6 24. a4 bxa4 25. Nc4 Qf4 26. Qe3 Qg4 27. f3 Qg6 28. Nd6 Bd5 29. Qc3 Kh7 30. Qc2 Qxc2 31. Rxc2 Kg6 32. Rc8 Rxc8 33. Nxc8 Kf6 34. Kf2 g5 35. Nb6 Bc6 36. Nc4 Ke7 37. Ne3 Kd6 38. Ke2 f5 39. g3 Bb5+ 40. Kd2 f4 41. gxf4 gxf4 42. Ng2 e5 43. dxe5+ Kxe5 44. Kc3 Bf1 45. Ne1 Kd6 46. Nc2 Kc5 47. Nd4 Bh3 48. Ne2 Bg2 49. Nxf4 Bxf3 50. Nd3+ Kb5 51. Ne5 Bh5 52. Nc4 Bg4 53. Nd6+ Kc5 54. Nf7 h5 55. Ne5 Bf5 56. Nc4 Be4 57. Nd2 Bg2 58. h4 Kd5 59. Nc4 Ke4 60. Nd6+ Kd5 61. Ne8 Kc5 62. Nf6 Bf3 63. b3 1/2-1/2
https://en.wikipedia.org/wiki?curid=18398938
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Because eukaryotic cell cycle involves a variety of proteins and regulatory interactions, dynamical systems approach can be taken to simplify a complex biological circuit into a general framework for better analysis. Among the four possible input/output relationships, the relationship between Sic1 level and mitotic exit seems to show the characteristics of an irreversible bistable switch, driven by feedback between APC-Cdh1, Sic1, and Clb2-Cdk1. Bistability is known to control biological functions such as cell cycle control and cellular differentiation and play a key role in many cellular regulatory networks. Bistable input/output relationship is characterized by two stable states with two bifurcation points. Multiple outputs are possible for one specific input in the region of bistability, marked by two bifurcation points. In addition, the bistable relationship displays hysteresis: the final state/output depends on the history of the input as well as the current value of input because the system has a memory. One bifurcation point has a negative control parameter value (the bifurcation point is on the other side of the axis), resulting in disconnection between the two stable states and irreversibility of the transition from one state to the other. With regard to mitotic exit, the two stable states are defined by mitosis and G1 phase. Once Sic1 level (input) accumulates beyond the threshold, irreversible transition occurs from mitosis (stable state I) to G1 phase (stable state II).
https://en.wikipedia.org/wiki?curid=25368725
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Because eukaryotic cell cycle involves a variety of proteins and regulatory interactions, dynamical systems approach can be taken to simplify a complex biological circuit into a general framework for better analysis. Among the four possible input/output relationships, the relationship between Sic1 level and mitotic exit seems to show the characteristics of an irreversible bistable switch, driven by feedback between APC-Cdh1, Sic1, and Clb2-Cdk1. Bistability is known to control biological functions such as cell cycle control and cellular differentiation and play a key role in many cellular regulatory networks. Bistable input/output relationship is characterized by two stable states with two bifurcation points. Multiple outputs are possible for one specific input in the region of bistability, marked by two bifurcation points. In addition, the bistable relationship displays hysteresis: the final state/output depends on the history of the input as well as the current value of input because the system has a memory. One bifurcation point has a negative control parameter value (the bifurcation point is on the other side of the axis), resulting in disconnection between the two stable states and irreversibility of the transition from one state to the other. With regard to mitotic exit, the two stable states are defined by mitosis and G1 phase. Once Sic1 level (input) accumulates beyond the threshold, irreversible transition occurs from mitosis (stable state I) to G1 phase (stable state II).
https://en.wikipedia.org/wiki?curid=34058307
2,021,456
213,992
Video clips can be up to 4 GB in size, approximately 12 minutes of 1080p HD or 24 minutes of SD (640 x 480) footage. These limits stem from the 4 GB maximum file size supported by the FAT32 filesystem format used on Compact Flash cards. The camera also imposes a hard maximum clip length of 29 minutes 59 seconds if the 4 GB limit has not already been reached. Video and audio is recorded to QuickTime (MOV) container files with H.264/MPEG-4 (Base Profile @ L5) compressed video and uncompressed 48 kHz/16-bit PCM audio. The bitrate for 1080p is approximately 38 megabits per second (4.8 MByte/s), while for SD it is approximately 17 megabits per second (2.2 MByte/s). Although the internal microphone is mono, stereo audio is supported through the audio input jack. When recording for long periods, especially in warmer climates, increased video noise may occur due to CMOS overheating. Rolling shutter, a phenomenon where vertical lines look bent on moving objects, when the camera is in motion is a significant issue with the Canon 5D Mark II.
https://en.wikipedia.org/wiki?curid=17844368
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For complex thermodynamic systems with several interacting parts and state variables, or for measurement conditions that are neither constant pressure nor constant volume, or for situations where the temperature is significantly non-uniform, the simple definitions of heat capacity above are not useful or even meaningful. The heat energy that is supplied may end up as kinetic energy (energy of motion) and potential energy (energy stored in force fields), both at macroscopic and atomic scales. Then the change in temperature will depends on the particular path that the system followed through its phase space between the initial and final states. Namely, one must somehow specify how the positions, velocities, pressures, volumes, etc. changed between the initial and final states; and use the general tools of thermodynamics to predict the system's reaction to a small energy input. The "constant volume" and "constant pressure" heating modes are just two among infinitely many paths that a simple homogeneous system can follow.
https://en.wikipedia.org/wiki?curid=194227
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Calipari is the oldest daughter of John Calipari, an American basketball coach, and Ellen Calipari. Calipari took part in athletics while attending White Station High School. She played softball, basketball and hockey. She was part of the first generation in her family to attend to become an academic. Calipari attended University of Massachusetts Amherst, where she studied biology and played for the UMass Minutewomen. Calpari was a graduate student at Wake Forest University, where she earned a doctorate in neuropharmacology under the supervision of Sara Jones. She used analytical chemistry and operant behavior studies to understand how dopamine kinetics are impacted by drug self-administration. Calipari was a postdoctoral research associate in a genetics laboratory at the Icahn School of Medicine at Mount Sinai. She focused on how to understand neural circuit activity and transcriptional programs.
https://en.wikipedia.org/wiki?curid=61379329
1,270,048
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The advancements of transportation infrastructure by both national and international private players have created an environment conducive to developing space-based industries that use commerce to greatly increase the quality of life and decrease the cost of living. Examples of space-based activities that have commercial potential include, but are not limited to, tapping space-based clean energy sources, mining asteroids for useful raw materials, developing safe venues for scientific experiments, upcycling/sequestering hazardous but valuable debris currently in space, tapping sources of water already in space, to decouple into oxygen and hydrogen for space fuels and oxidizers and to provide radiation shielding mass, and so forth. Collaboration between both public and private space companies in which the private sector develops the space industry and government parties and agencies, like NASA, buy transport and other key services, such as on-orbit facilities, as customers of the private providers. NASA, as an example, has already begun buying some space transportation in this manner. Such actions are leading to a comprehensive advancement in space.
https://en.wikipedia.org/wiki?curid=67456408
1,933,095
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The history of the education in Kolozsvár, ( , Principality of Transylvania) begins in 1581, with the establishment of the Jesuit college by Stephen Báthory. The college received buildings and land within the medieval city walls, specifically on "Platea Luporum" (the present Mihail Kogălniceanu Street). The first rector of the Collegium Academicum Claudiopolitanum was the Polish Jesuit priest Jakub Wujek. The institution had the rights to confer the university/academic titles of "baccalaureus", "magister", and "doctor". In 1585, there were 230 students studying here, divided into six classes. The language of instruction and learning was Latin. After 1698, the institution was named Universitas Claudiopolitana (see the cover of the book from 1742 by Andreas Matis entitled "Peregrinus Catholicus de peregrina unitaria religione"), with teachings in Latin and later also in German. In 1753, Empress Maria Theresa changed the status of the university into an imperial one, and in 1773, after the dissolution of the Jesuit Order, the university went under the administration of the Piarist order. In 1786 Universitas Claudiopolitana became the Royal Academic Lyceum (Lyceum Regium Academicum – semiuniversity statute), which was later followed by two institutions with a semiuniversity statute (e.g., offering training at of baccalaureus/magister level, but not at doctor level): (a) the Surgical-Medical Institute and (b) the Academy of Law. This institutions will be later incorporated in the Franz Joseph University.
https://en.wikipedia.org/wiki?curid=2912735
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The band's original bassist Adam Doll was unable to contribute to the recording of "Calculating Infinity" after suffering a spinal fracture in a road traffic accident shortly before recording began, forcing guitarist Ben Weinman to handle all guitar and bass duties. Speaking to "Kerrang!" about Doll's injury, Weinman described it as "a life-changing moment" for the band, adding: "It was difficult to think about moving forward, but I felt he would get better and I wanted to make something for him to come back to". Rhythm guitarist Brian Benoit joined the band partway through the recording process and contributed additional guitar recordings to a handful of tracks, as well as writing a guitar part on "Clip the Apex... Accept Instruction" and assisting with vocal arrangements on "Variations on a Cocktail Dress". When asked whether the band considered delaying the recording of the album until Benoit was "fully integrated" into the band, Weinman responded: "The idea was ... for us to progress and build on what we had done" rather than "stopping our progression waiting for someone else to catch up"; Benoit also commented: "I knew my role, which was getting up to par live".
https://en.wikipedia.org/wiki?curid=846067
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The area of choice under uncertainty represents the heart of decision theory. Known from the 17th century (Blaise Pascal invoked it in his famous wager, which is contained in his "Pensées", published in 1670), the idea of expected value is that, when faced with a number of actions, each of which could give rise to more than one possible outcome with different probabilities, the rational procedure is to identify all possible outcomes, determine their values (positive or negative) and the probabilities that will result from each course of action, and multiply the two to give an "expected value", or the average expectation for an outcome; the action to be chosen should be the one that gives rise to the highest total expected value. In 1738, Daniel Bernoulli published an influential paper entitled "Exposition of a New Theory on the Measurement of Risk", in which he uses the St. Petersburg paradox to show that expected value theory must be normatively wrong. He gives an example in which a Dutch merchant is trying to decide whether to insure a cargo being sent from Amsterdam to St Petersburg in winter. In his solution, he defines a utility function and computes expected utility rather than expected financial value.
https://en.wikipedia.org/wiki?curid=446216
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On 28 November, 13 cases were confirmed in the Netherlands among the 624 airline passengers who arrived from South Africa on 26 November. Confirmation of a further 5 cases among these passengers followed later. Entry into the Netherlands generally required having been vaccinated or PCR-tested, or having recovered. The passengers of these two flights had been tested upon arrival because of the newly imposed restrictions (which were set in place during their flight), after which 61 tested positive for SARS-CoV-2. A further two cases were detected in Australia. Both people landed in Sydney the previous day, and travelled from southern Africa to Sydney Airport via Doha Airport. The two people, who were fully vaccinated, entered isolation; 12 other travellers from southern Africa also entered quarantine for fourteen days, while about 260 other passengers and crew on the flight were directed to isolate. Two travellers from South Africa who landed in Denmark tested positive for COVID-19; it was confirmed on 28 November that both carried the Omicron variant. On the same day, Austria also confirmed its first Omicron case. A detected Omicron case was reported in the Czech Republic, from a traveler who spent time in Namibia. Canada also reported its first Omicron cases, with two from travelers from Nigeria, therefore becoming the first North American country to report an Omicron case.
https://en.wikipedia.org/wiki?curid=69363482
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A study by anthropologists John Hawks, Henry Harpending, Gregory Cochran, and colleagues suggests that human evolution has sped up significantly since the beginning of the Holocene, at an estimated pace of around 100 times faster than during the Paleolithic, primarily in the farming populations of Eurasia. Thus, humans living in the twenty-first century are more different from their ancestors of 5,000 years ago than their ancestors from that era were to the Neanderthals who went extinct around 30,000 years ago. They tied this effect to new selection pressures arising from new diets, new modes of habitation, and immunological pressures related to the domestication of animals. For example, populations that cultivate rice, wheat, and other grains have gained the ability to digest starch thanks to an enzyme called amylase, found in saliva. In addition, having a larger population means having more mutations, the raw material on which natural selection acts.
https://en.wikipedia.org/wiki?curid=54472601
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In December 1953, NATO issued NBMR-1, calling for a lightweight tactical fighter capable of carrying conventional and nuclear weapons and operating from rough airfields. In late 1954, a Northrop team toured Europe and Asia to examine both the NBMR-1 and the needs of SEATO members. From this tour, Schmued gave his team the goal of reversing the trend in fighter development towards greater size and weight in order to deliver an aircraft with high performance, enhanced maneuverability, and high reliability, while still delivering a cost advantage over contemporary fighters. Recognizing that expensive jet aircraft could not viably be replaced every few years, he also demanded "engineered growth potential" allowing service longevity in excess of 10 years.
https://en.wikipedia.org/wiki?curid=11142
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Immediately after the 1989 Velvet Revolution, the president of Czechoslovakia Václav Havel declared a demobilisation of the Czechoslovak defence industry. Nevertheless, after the dissolution of the Soviet Union in 1991, the Czech company Aero Vodochody continued developing the basic L-39 Albatros design with a view toward greater export. The resulting L-39MS, later designed as L-59 Super Albatros, featured a more powerful turbofan engine, advanced avionics, and has been bought in quantity by Egypt and Tunisia. In 1993, a group of Czech military experts launched a project to produce a modern domestic fighter to replace the obsolete Soviet aircraft. Since the proposed Aero L-X supersonic fighter development proved to be financially demanding (up to US$2 billion), the less costly L-159 subsonic attack aircraft, derived from the L-39 Albatros, was approved for procurement instead.
https://en.wikipedia.org/wiki?curid=1007317
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Gray, considered by Darwin to be his friend and "best advocate", also attempted to convince Darwin in his letters that design was inherent in all forms of life, and to return to his faith. Gray saw nature as filled with "unmistakable and irresistible indications of design" and argued that "God himself is the very last, irreducible causal factor and, hence, the source of all evolutionary change." Darwin agreed that his theories were "not at all necessarily atheistical" but was unable to share Gray's belief. "I feel most deeply that the whole subject is too profound for the human intellect. A dog might as well speculate on the mind of Newton," he wrote. Gray was a Christian, but he was a staunch supporter of Darwin in America. He collected together a number of his own writings to produce an influential book, "Darwiniana" (1876); these essays argued for a conciliation between Darwinian evolution and the tenets of theism, at a time when many on both sides perceived the two as mutually exclusive. Gray denied that investigation of physical causes stood opposed to the theological view and the study of the harmonies between mind and Nature, and thought it "most presumable that an intellectual conception realized in Nature would be realized through natural agencies". The result of all this is that Gray distanced himself from Social Darwinism. Gray is a critical link in the history of American intellectualism, and his writings that explain how religion and science were not necessarily mutually exclusive have been considered his supreme accomplishment; thereby providing a way for believers in Creationism to consider Darwin's ideas.
https://en.wikipedia.org/wiki?curid=443026
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The Cooperative High Altitude Rocket Gun Experiment (CHARGE) 2 was jointly developed by Japan and NASA, to observe the current collection along with other phenomena. The major objective was to measure the payload charging and return currents during periods of electron emission. Secondary objectives were related to plasma processes associated with direct current and pulsed firings of a low-power electron beam source. On 14 December 1985, the CHARGE mission was launched at White Sands Missile Range, New Mexico. The results indicated that it is possible to enhance the electron current collection capability of positively charged vehicles by means of deliberate neutral gas releases into an undisturbed space plasma.
https://en.wikipedia.org/wiki?curid=31386739
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Semantic networks were also independently implemented by Robert F. Simmons and Sheldon Klein, using the first order predicate calculus as a base, after being inspired by a demonstration of Victor Yngve. The "line of research was originated by the first President of the Association for Computational Linguistics, Victor Yngve, who in 1960 had published descriptions of algorithms for using a phrase structure grammar to generate syntactically well-formed nonsense sentences. Sheldon Klein and I about 1962-1964 were fascinated by the technique and generalized it to a method for controlling the sense of what was generated by respecting the semantic dependencies of words as they occurred in text." Other researchers, most notably M. Ross Quillian and others at System Development Corporation helped contribute to their work in the early 1960s as part of the SYNTHEX project. It's from these publications at SDC that most modern derivatives of the term "semantic network" cite as their background. Later prominent works were done by Allan M. Collins and Quillian (e.g., Collins and Quillian; Collins and Loftus Quillian). Still later in 2006, Hermann Helbig fully described MultiNet.
https://en.wikipedia.org/wiki?curid=29109
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Surviving palaces illustrate the splendor in which the Sasanian monarchs lived. Examples include palaces at Firuzabad and Bishapur in Fars, and the capital city of Ctesiphon in the Asoristan province (present-day Iraq). In addition to local traditions, Parthian architecture influenced Sasanian architectural characteristics. All are characterized by the barrel-vaulted iwans introduced in the Parthian period. During the Sasanian period, these reached massive proportions, particularly at Ctesiphon. There, the arch of the great vaulted hall, attributed to the reign of Shapur I (241–272), has a span of more than and reaches a height of . This magnificent structure fascinated architects in the centuries that followed and has been considered one of the most important examples of Persian architecture. Many of the palaces contain an inner audience hall consisting, as at Firuzabad, of a chamber surmounted by a dome. The Persians solved the problem of constructing a circular dome on a square building by employing squinches, or arches built across each corner of the square, thereby converting it into an octagon on which it is simple to place the dome. The dome chamber in the palace of Firuzabad is the earliest surviving example of the use of the squinch, suggesting that this architectural technique was probably invented in Persia.
https://en.wikipedia.org/wiki?curid=5876413
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Cancer epigenetics is the study of epigenetic modifications to the DNA of cancer cells that do not involve a change in the nucleotide sequence, but instead involve a change in the way the genetic code is expressed. Epigenetic mechanisms are necessary to maintain normal sequences of tissue specific gene expression and are crucial for normal development. They may be just as important, if not even more important, than genetic mutations in a cell's transformation to cancer. The disturbance of epigenetic processes in cancers, can lead to a loss of expression of genes that occurs about 10 times more frequently by transcription silencing (caused by epigenetic promoter hypermethylation of CpG islands) than by mutations. As Vogelstein et al. points out, in a colorectal cancer there are usually about 3 to 6 driver mutations and 33 to 66 hitchhiker or passenger mutations. However, in colon tumors compared to adjacent normal-appearing colonic mucosa, there are about 600 to 800 heavily methylated CpG islands in the promoters of genes in the tumors while these CpG islands are not methylated in the adjacent mucosa. Manipulation of epigenetic alterations holds great promise for cancer prevention, detection, and therapy. In different types of cancer, a variety of epigenetic mechanisms can be perturbed, such as the silencing of tumor suppressor genes and activation of oncogenes by altered CpG island methylation patterns, histone modifications, and dysregulation of DNA binding proteins. There are several medications which have epigenetic impact, that are now used in a number of these diseases.
https://en.wikipedia.org/wiki?curid=35746225
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In 1971, he reported in the "New England Journal of Medicine" that solid tumors are angiogenesis-dependent. He hypothesized that there was an unknown "factor" that tumors secreted to help it increase its blood supply, and that if that factor could be blocked, tumors would wither and die. Though his hypothesis was initially disregarded and treated with skepticism by most experts in the field, Folkman persisted with his research. He and collaborators, who included Bert L. Vallee, soon identified the already-known fibroblast growth factor as an angiogenic factor, but the team's work showed that there were additional, unknown factors. To help accelerate the work, Folkman started collaborating with industry. In 1974 Harvard University and Monsanto signed a ten-year industrial-funded research grant to support his cancer research, which at that time was the largest such arrangement ever made; medical inventions arising from that research were the first for which Harvard allowed its faculty to submit a patent application. Robert Langer worked as a postdoc in Folkman's lab during this time, concentrating on using silastic and other materials to deliver drugs.
https://en.wikipedia.org/wiki?curid=2038120
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In 2011, Hill's research, which had used helioseismography to monitor streams below the surface of the sun, attracted considerable media attention. Although such streams tend to be the "spawning ground" for sunspots, and they had been expected to begin forming in 2008, the study found that these new streams had yet to form. The study in question therefore suggested that the sunspot cycle was going to take longer than expected to reach its next peak, or, according to Hill, might not happen at all. Although Hill and his colleagues refused to discuss the possible effects this weaker solar cycle would have on climate, this was reported on by some media, including the Global Warming Policy Foundation, as evidence that a "mini ice age" was imminent. Hill responded to these reports by telling Reuters that "We have not predicted a Little Ice Age," but rather that "We have predicted something going on with the Sun." In an NSO press release, Hill added that "In my opinion, it is a huge leap from that to an abrupt global cooling, since the connections between solar activity and climate are still very poorly understood. My understanding is that current calculations suggest only a 0.3 degree C decrease from a Maunder-like minimum, too small for an ice age."
https://en.wikipedia.org/wiki?curid=43334606
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The On-line strategy makes adjustment to patient and beam position during the treatment process, based on continuously updated information throughout the procedure. The on-line approach requires a high-level of integration of both software and hardware. The advantage of this strategy is a reduction in both systematic and random errors. An example is the use of a marker-based program in the treatment of prostate cancer at Princess Margaret Hospital. Gold markers are implanted into the prostate to provide a surrogate position of the gland. Prior to each day's treatment, portal imaging system results are returned. If the center of the mass has moved greater than 3mm, then the couch is readjusted and a subsequent reference image is created. Other clinics correct for any positional errors, never allowing for >1 mm error in any measured axes.
https://en.wikipedia.org/wiki?curid=11308931
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Post-inflammation, microglia undergo several steps to promote regrowth of neural tissue. These include synaptic stripping, secretion of anti-inflammatory cytokines, recruitment of neurons and astrocytes to the damaged area, and formation of gitter cells. Without microglial cells regrowth and remapping would be considerably slower in the resident areas of the CNS and almost impossible in many of the vascular systems surrounding the brain and eyes. Recent research verified, that microglial processes constantly monitor neuronal functions through specialized somatic junctions, and sense the "well-being" of nerve cells. Via this intercellular communication pathway, microglia are capable of exerting robust neuroprotective effects, contributing significantly to repair after brain injury. Microglia have also been shown to contribute to proper brain development, through contacting immature, developing neurons.
https://en.wikipedia.org/wiki?curid=1552187
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The Space Race began with the 1957 launch of the Soviet satellite Sputnik 1. This came as a shock to the American public, and led to the creation of NASA to expedite existing US space exploration efforts, and place most of them under civilian control. After the successful launch of the Explorer 1 satellite in 1958, crewed spaceflight became the next goal. The Soviet Union put the first human, cosmonaut Yuri Gagarin, into a single orbit aboard Vostok 1 on April 12, 1961. Shortly after this, on May 5, the US launched its first astronaut, Alan Shepard, on a suborbital flight. Soviet Gherman Titov followed with a day-long orbital flight in August 1961. The US reached its orbital goal on February 20, 1962, when John Glenn made three orbits around the Earth. When Mercury ended in May 1963, both nations had sent six people into space, but the Soviets led the US in total time spent in space.
https://en.wikipedia.org/wiki?curid=19812
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Nuclear fusion powers a star for most of its existence. Initially the energy is generated by the fusion of hydrogen atoms at the core of the main-sequence star. Later, as the preponderance of atoms at the core becomes helium, stars like the Sun begin to fuse hydrogen along a spherical shell surrounding the core. This process causes the star to gradually grow in size, passing through the subgiant stage until it reaches the red-giant phase. Stars with at least half the mass of the Sun can also begin to generate energy through the fusion of helium at their core, whereas more-massive stars can fuse heavier elements along a series of concentric shells. Once a star like the Sun has exhausted its nuclear fuel, its core collapses into a dense white dwarf and the outer layers are expelled as a planetary nebula. Stars with around ten or more times the mass of the Sun can explode in a supernova as their inert iron cores collapse into an extremely dense neutron star or black hole. Although the universe is not old enough for any of the smallest red dwarfs to have reached the end of their existence, stellar models suggest they will slowly become brighter and hotter before running out of hydrogen fuel and becoming low-mass white dwarfs.
https://en.wikipedia.org/wiki?curid=27980
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The southern European marker plant for climate as well as cultural indicator is the olive tree, which cannot withstand long periods below freezing so its cultivation area matches the cool winter zone. The Mediterranean Sea acts as a temperature regulator, so this area is generally warmer than other parts of the continent; except in mountainous areas where the sea effect lowers, it belongs in zones 8–10; however, southern Balkans (mountainous Western and Eastern Serbia, continental Croatia, and Bulgaria) are colder in winter and are in zones 6–7. The Croatian (Dalmatian) coast, Albania, and northern Greece are in zones 8–9, as are central-northern Italy (hills and some spots in Po Valley are however colder) and southern France; Central Iberia is 8–9 (some highland areas are slightly colder). The Spanish and Portuguese Atlantic coast, much of Andalusia and Murcia, coastal and slightly inland southern Valencian Community, a part of coastal Catalonia, the Balearic Islands, southwestern Sardinia, most of Sicily, coastal southern Italy, some areas around Albania, coastal Cyprus and southwestern Greece are in zone 10. In Europe, the zone 11a is limited only to a few spots. In the Iberian Peninsula, it can be found on the southern coast, namely in populated Spanish areas such as the cities of Almería, Adra, Nerja, Málaga, Marbella and in a strip of coastal land between Tarifa and Punta Carnero in the province of Cádiz. In Portugal, zone 11a can be found in the Southwest on a few unpopulated sites around the municipalities of Lagos and Vila do Bispo. In Greece, zone 11a can be found in areas of Crete, Karpathos and Antiparos islands. The Mediterranean islands of Malta, Lampedusa and Linosa belong to zone 11a as well as a few areas on the southernmost coast of Cyprus. The Balkan area is also more prone to cold snaps and episodes of unseasonable warmth. For instance, despite having similar daily means and temperature amplitudes to Nantucket, Massachusetts for each month, Sarajevo has recorded below-freezing temperatures in every month of the year.
https://en.wikipedia.org/wiki?curid=1720511
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It combined the high speed of electronics with the ability to be programmed for many complex problems. It could add or subtract 5000 times a second, a thousand times faster than any other machine. It also had modules to multiply, divide, and square root. High speed memory was limited to 20 words (about 80 bytes). Built under the direction of John Mauchly and J. Presper Eckert at the University of Pennsylvania, ENIAC's development and construction lasted from 1943 to full operation at the end of 1945. The machine was huge, weighing 30 tons, using 200 kilowatts of electric power and contained over 18,000 vacuum tubes, 1,500 relays, and hundreds of thousands of resistors, capacitors, and inductors.
https://en.wikipedia.org/wiki?curid=7878457
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There are safety issues specific to rebreather equipment, and these tend to be more severe in diving rebreathers. Methods of addressing these issues can be categorised as engineering and operational approaches. Development of engineering solutions to these issues is ongoing and has been relatively rapid, but depends on the affordable availability of suitable technology, and some of the engineering problems, such as reliability of oxygen partial pressure measurement, have been relatively intractable. Other problems, such as scrubber breakthrough monitoring and automated control of gas mixture have advanced considerably in the 21st century, but remain relatively expensive. Work of breathing is another issue that has room for improvement, and is a severe limitation on acceptable maximum depth of operation, as the circulation of gas through the scrubber is almost always powered by the lungs of the diver. Fault tolerant design can help with making failures survivable.
https://en.wikipedia.org/wiki?curid=62138749
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"Perseverance" will investigate an astrobiologically relevant ancient environment on Mars and investigate its surface geological processes and history, including the assessment of its past habitability, the possibility of past life on Mars, and the potential for preservation of biosignatures within accessible geological materials. It will cache sample containers along its route for retrieval by a potential future Mars sample-return mission. The Mars 2020 mission was announced by NASA in December 2012 at the fall meeting of the American Geophysical Union in San Francisco. "Perseverance" design is derived from the rover "Curiosity", and it uses many components already fabricated and tested in addition to new scientific instruments and a core drill. The rover also employs nineteen cameras and two microphones, allowing for audio recording of the Martian environment. On April 30, 2021, "Perseverance" became the first spacecraft to hear and record another spacecraft, the "Ingenuity" helicopter, on another planet.
https://en.wikipedia.org/wiki?curid=37837437
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Though controversial, it has been suggested that male homosexuality and/or female menopause could have evolved through kin selection, which, if true, would mean that humans sometimes exhibit a type of alloparental behavior known as "helpers at the nest," a social structure similar to eusociality in which juveniles and sexually mature adolescents remain in association with their parents and help them raise subsequent broods or litters, instead of dispersing and beginning to reproduce themselves. This type of co-operative breeding behavior is seen in several bird species, some non-eusocial bees, meerkats, and, potentially, humans. In such species, however, the reproductive parents and the subordinate helpers do not belong to different castes, as in eusocial species, and helpers will still try to reproduce on their own if given the opportunity. For example, meerkat matriarchs socially suppress the sexual activity of their daughters to ensure that their only means of gaining fitness is through helping to raise their siblings, but helpers will still try to reproduce on their own if given the chance. Some authors have argued that such "helper" behaviors and eusociality exist together on a continuum of similar social systems, while others draw a sharp distinction between the two.
https://en.wikipedia.org/wiki?curid=20756869
248,518
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At approximately 1:15 p.m. (EST) on the afternoon of September 16, a Blizzard staff member reported that the team was "aware of the issue and working on it". While the company quickly became aware that Corrupted Blood had spread beyond its intended reach, identifying and fixing the issue that led to the pandemic proved difficult. One of the first steps that Blizzard took to attempt containment of the virus was to institute quarantine zones, placing barriers around heavily infected areas. The effect that this quarantine had was limited, as some players managed to bypass Blizzard's containment measures. Developers, meanwhile, faced difficulties in isolating and removing the virus from the pet companions that were driving its spread. Their two options for healing pet companions were to manually check every animal in the game universe for Corrupted Blood infection or developing "really hacky code" that would automatically check for infection every time a companion was summoned.
https://en.wikipedia.org/wiki?curid=2723081
161,009
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Campbell-Swinton's letter was published in the 18 June 1908 issue of "Nature". The name of the article is "Distant Electric Vision". He wrote: "This part of the problem of obtaining distant electric vision can probably be solved by the employment of two beams of cathode rays (one at the transmitting and one at the receiving station) synchronously deflected by the varying fields of two electromagnets placed at right angles to one another and energised by two alternating electric currents of widely different frequencies, so that the moving extremities of the two beams are caused to sweep simultaneously over the whole of the required surface within the one-tenth of a second necessary to take advantage of visual persistence. Indeed, so far as the receiving apparatus is concerned, the moving cathode beam has only to be arranged to impinge on a suitably sensitive fluorescent screen, and given suitable variations in its intensity, to obtain the desired result."
https://en.wikipedia.org/wiki?curid=379130
1,769,759
1,979,860
The Pentelute laboratory designs fully automated fast-flow machines to accelerate the chemical manufacture of sequence-defined biopolymers. It has built an efficient machine that can produce amide bonds an order of magnitude faster than commercially available instruments. The machine is inspired by Nature's ribosome that can make proteins in minutes. While the Pentelute group's fast-flow technology is not as fast as the ribosome, it can form one amide bond in 7 seconds. This technology not only facilitates rapid polypeptide generation but it has enabled the group to carry out entire D-scans of proteins to investigate folding and functions. This technology was used to achieve stepwise total chemical synthesis of functional protein chains and was adapted to produce phosphorodiamidate morpholino oligomers (PMO) in flow. Automated flow technology may be used to solve the manufacturing problem for on-demand personalized therapies, such as cancer vaccines, and to design engineered biologics, such as dimeric transcription factor mimetics.
https://en.wikipedia.org/wiki?curid=59104462
1,978,722
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Gene insertion techniques can be used for characteristic mutations in an organism for a desired phenotypic gene expression. A gene insert change can be expressed in a large variety of ends. These variants can range from the loss, or gain, of protein function to changes in physical structure i.e., hair, or eye, color. The goal of changes in expression are focused on a gain of function in proteins for regulation or to termination of cellular function for prevention of disease. The results of the variations are dependent on the place in the genome the addition, or mutation is located. The aim is to learn, understand, and possibly predict the expression of genetic material in organisms using physical and chemical analysis. To see the results of genetic mutations, or inserts, techniques such as DNA sequencing, gel electrophoresis, immunoassay, or microscopy  can observe mutation.
https://en.wikipedia.org/wiki?curid=14677231
1,645,108
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Soon afterwards, additional posts were provided by the University and matched by appropriate staff positions by Lothian Health Board (NHS) to create first clinical service for medical oncology in Edinburgh. The service was based in the Western General Hospital where some beds and out-patient facilities were provided. In 1980 it was formally recognized as the Imperial Cancer Research Fund Medical Oncology Unit in Edinburgh with professor John Smyth as its director. This resulted in additional funding that allowed building of a small research laboratory which was commissioned in 1981. The laboratory was located in a portable cabin on the Western General Hospital campus. The main focus of the Unit was the development of more successful drug therapies for all forms of cancer and looking for new ways of reducing the side-effects of anti-cancer drugs.
https://en.wikipedia.org/wiki?curid=41585922
2,103,869
1,182,620
In November, No. 4 Belgian and No. 6 Polish Troops joined the 2nd Special Service Brigade in Italy. Notably the Poles captured a German-occupied village alone when the 2/6th Battalion Queen's Regiment failed to reach a rendezvous on time. Later in the year No. 2 Dutch Troop was sent to the Far East to work with No. 44 (Royal Marine) Commando and No. 5 Commando behind the Japanese lines in the Arakan in Burma. In Burma 142 Commando Company formed part of the Chindits (the 77th Indian Infantry Brigade), and fought in the first long-range Chindit operation behind Japanese lines, codenamed Operation Longcloth. The raid began on 8 February 1943 and lasted for about three months. It inflicted little damage on Japanese supply lines but it did show that British and Indian Army and Indian forces could fight in the jungle as well as or better than the Japanese; this gave a boost to the morale of the Allied forces fighting in the South-East Asian Theatre.
https://en.wikipedia.org/wiki?curid=27342087
1,181,995
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Ephemeral wetlands degradation and loss of biodiversity had, at one point in time, been blamed on mismanaged grazing of both native and non-native ungulates and other grazers. A study done by Jaymee Marty of The Nature Conservancy examined the effects on the vernal pools formed in California when grazers were removed. The results of the short study showed that areas where grazers were removed had a lower diversity of native grasses, invertebrates and vertebrates in the pools, with an increase in non-native grass abundance and distribution in the area. The study also demonstrated reduced reproduction success of individual species in the area, such as the western spadefoot toad and California tiger salamander. Marty argues that this decrease is due to ecosystems adapting to historical changes in grazers and the effects they have. In other words, the historic ecosystem, theoretically, would have responded positively to the removal of cattle grazing, however, the system has adapted to the European introduced species and now may require them for maintained diversity. In another study performed by Pyke and Marty, measurements showed that on average, vernal ponds on grazed land pooled longer than ungrazed areas and soil was more resistant to water absorption in the grazed areas.
https://en.wikipedia.org/wiki?curid=14257055
1,377,851
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Freudian theories hold that adult problems can be traced to unresolved conflicts from certain phases of childhood and adolescence, caused by fantasy, stemming from their own drives. Freud, based on the data gathered from his patients early in his career, suspected that neurotic disturbances occurred when children were sexually abused in childhood (i.e. "seduction theory"). Later, Freud came to believe that, although child abuse occurs, neurotic symptoms were not associated with this. He believed that neurotic people often had unconscious conflicts that involved incestuous fantasies deriving from different stages of development. He found the stage from about three to six years of age (preschool years, today called the "first genital stage") to be filled with fantasies of having romantic relationships with both parents. Arguments were quickly generated in early 20th-century Vienna about whether adult seduction of children, i.e. child sexual abuse, was the basis of neurotic illness. There still is no complete agreement, although nowadays professionals recognize the negative effects of child sexual abuse on mental health.
https://en.wikipedia.org/wiki?curid=23585
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The consequences of topological perturbations in DNA are exemplified by DNA replication during which the strands of the duplex are separated; this separation leads to the formation of positive supercoils (DNA overwinding or overtwisting) ahead of the replication fork and intertwining of the daughter strands (precatenanes) behind (Fig. 2). If the positive supercoils are not relaxed, progression of the replication fork is impeded, whereas failure to unlink the daughter strands prevents genome segregation, which is required for cell division. Transcription by RNA polymerase also generates positive supercoiling ahead of, and negative supercoiling behind, the transcriptional complex (Fig. 2). This effect is known as the twin-supercoiled domain model, as described by Leroy Liu and James Wang in 1987. These topological perturbations must be resolved for DNA metabolism to proceed, allowing the cell to efficiently replicate, transcribe and partition the genome to enable cellular division and vitality. Knots in DNA can be found in bacteriophages and as products of recombination reactions. In general, knots in DNA are detrimental and need to be removed (by topoisomerases). DNA catenanes are formed upon the replication of circular molecules and need to be resolved by topoisomerases or recombinases to allow proper separation of daughter molecules during cell division. In addition to the detrimental aspects of DNA topology that require resolution, there are also beneficial aspects. For example, plasmid replication requires negative supercoiling of the origin, which facilitates local melting and exposes single-stranded DNA required to initiate replication. Similarly, initiation of replication from the main bacterial origin "oriC" also requires negative supercoiling. Furthermore, compaction of the "E. coli" genome is achieved in part by negative supercoiling.
https://en.wikipedia.org/wiki?curid=235935
922,027
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However, convincing evidence indicates, in areas with persistent malaria outbreaks, individuals with the heterozygous state have a distinct advantage (and this is why individuals with heterozygous alleles are far more common in these areas). Those with the benign sickle trait possess a resistance to malarial infection. The pathogen that causes the disease spends part of its cycle in the red blood cells and triggers an abnormal drop in oxygen levels in the cell. In carriers, this drop is sufficient to trigger the full sickle-cell reaction, which leads to infected cells being rapidly removed from circulation and strongly limiting the infection's progress. These individuals have a great resistance to infection and have a greater chance of surviving outbreaks. However, those with two alleles for SCA may survive malaria, but will typically die from their genetic disease unless they have access to advanced medical care. Those of the homozygous "normal" or wild-type case will have a greater chance of passing on their genes successfully, in that there is no chance of their offspring's suffering from SCA; yet, they are more susceptible to dying from malarial infection before they have a chance to pass on their genes.
https://en.wikipedia.org/wiki?curid=886093
1,090,491
1,327,742
The method of transport of endocannabinoids through the cell membrane and cytoplasm to their respective degradation enzymes has been rigorously debated for nearly two decades, and a putative endocannabinoid membrane transporter was proposed. However, as lipophilic molecules endocannabinoids readily pass through the cell lipid bilayer without assistance and would more likely need a chaperone through the cytoplasm to the endoplasmic reticulum where the enzyme FAAH is located. More recently fatty acid-binding proteins (FABPs) and heat shock proteins (Hsp70s) have been described and verified as such chaperones, and their inhibitors have been synthesized. The inhibition of endocannabinoid reuptake raises the amount of those neurotransmitters available in the synaptic cleft and therefore increases neurotransmission. Following the increase of neurotransmission in the endocannabinoid system is the stimulation of its functions which, in humans, include: suppression of pain perception (analgesia), increased appetite, mood elevation and inhibition of short-term memory.
https://en.wikipedia.org/wiki?curid=27296457
1,327,015
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Biological control techniques as we know them today started to emerge in the 1870s. During this decade, in the US, the Missouri State Entomologist C. V. Riley and the Illinois State Entomologist W. LeBaron began within-state redistribution of parasitoids to control crop pests. The first international shipment of an insect as a biological control agent was made by Charles V. Riley in 1873, shipping to France the predatory mites "Tyroglyphus phylloxera" to help fight the grapevine phylloxera ("Daktulosphaira vitifoliae") that was destroying grapevines in France. The United States Department of Agriculture (USDA) initiated research in classical biological control following the establishment of the Division of Entomology in 1881, with C. V. Riley as Chief. The first importation of a parasitoidal wasp into the United States was that of the braconid "Cotesia glomerata" in 1883–1884, imported from Europe to control the invasive cabbage white butterfly, "Pieris rapae". In 1888–1889 the vedalia beetle, "Rodolia cardinalis", a lady beetle, was introduced from Australia to California to control the cottony cushion scale, "Icerya purchasi". This had become a major problem for the newly developed citrus industry in California, but by the end of 1889, the cottony cushion scale population had already declined. This great success led to further introductions of beneficial insects into the US.
https://en.wikipedia.org/wiki?curid=155739
202,115
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All three organisations require full scientific diver status with nitrox certification as prerequisite, NOAA requires certification to and 100 open water dive, while AAUS and NPS require and 50 open water dives. Each agency specifies stepwise certification to increasing depths, and certification is valid only for the rebreather type trained on, for environmental conditions similar to those during training. Classroom training includes theory review of topics included in open circuit training, and decompression and dive planning appropriate to the chosen unit. More technical topics include system design and operation, pre-dive setup and testing, post-dive break down and maintenance, oxygen exposure and decompression management, dive operations planning, problem recognition and management specific to the chosen unit. Practical skills training includes system calibration and operation checks, preparation and management of absorbent canisters, breathing loop assembly, non-return valve function and pressure checks, gas analysis, pre-breathing function assessment, buoyancy control, system monitoring during the dive, bailout procedures, and system user maintenance, and experience exposure by way of minimum hours of underwater time under supervised conditions.
https://en.wikipedia.org/wiki?curid=11319315
1,394,104
721,211
All three organisations require full scientific diver status with nitrox certification as prerequisite, NOAA requires certification to and 100 open water dive, while AAUS and NPS require and 50 open water dives. Each agency specifies stepwise certification to increasing depths, and certification is valid only for the rebreather type trained on, for environmental conditions similar to those during training. Classroom training includes theory review of topics included in open circuit training, and decompression and dive planning appropriate to the chosen unit. More technical topics include system design and operation, pre-dive setup and testing, post-dive break down and maintenance, oxygen exposure and decompression management, dive operations planning, problem recognition and management specific to the chosen unit. Practical skills training includes system calibration and operation checks, preparation and management of absorbent canisters, breathing loop assembly, non-return valve function and pressure checks, gas analysis, pre-breathing function assessment, buoyancy control, system monitoring during the dive, bailout procedures, and system user maintenance, and experience exposure by way of minimum hours of underwater time under supervised conditions.
https://en.wikipedia.org/wiki?curid=39194607
720,831
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, Facebook's social graph is the largest social network dataset in the world, and it contains the largest number of defined relationships between the largest number of people among all websites because it is the most widely used social networking service in the world. Concern has focused on the fact that Facebook's social graph is owned by the company and is not shared with other services, giving it a major advantage over other services and preventing its users from taking their graph with them to other services when they wish to do so, such as when a user is dissatisfied with Facebook. Google has attempted to offer a solution to this problem by creating the Social Graph API, released in January 2008, which allows websites to draw publicly available information about a person to form a portable identity of the individual, in order to represent a user's online identity. This did not, however, experience Google's desired uptake and was thus retired in 2012. Facebook introduced its own Graph API at the 2010 f8 conference. Both companies monetise collected data sets through direct marketing and social commerce. In December 2016, Microsoft acquired LinkedIn for $26.2 billion.
https://en.wikipedia.org/wiki?curid=14682638
1,076,427
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The aptamer TBA (also known as G15D, HTQ, HD1 or ARC183) is a 15-mer single-stranded DNA with the sequence "5-GGTTGGTGTGGTTGG-3". It interacts with the exosite I of human alpha-thrombin, which is the binding site of fibrinogen, so this aptamer acts as an anti-coagulant agent inhibiting the activation of fibrinogen as well as platelet aggregation. In addition, TBA shows good affinity and specificity against thrombin. The dissociation constant of TBA-thrombin has been reported in nano-molar range, and TBA does not interact with other plasma proteins or thrombin analogues (e.g., gamma-thrombin). As a result, TBA has been used as a short-term anti-coagulant designed for the application in the coronary artery bypass graft surgery, and its optimized form (NU172) is now under the phase II of clinical trial by ARCA Biopharma (NCT00808964). Also, due to its high affinity and specificity, a variety of sensors was coupled with TBA and developed for thrombosis diagnostics.
https://en.wikipedia.org/wiki?curid=42635554
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In the meantime the two B-17Es had arrived over Menado to find four transports out in the bay and two more at the docks. On their first run, because of inexperience, they got themselves so blinded by the sun that they could drop no bombs, and on the second one plane had six bombs hang in the racks; yet as they withdrew the crews saw one of the transports capsize in the bay. Their returning course took them over the airport where the plane with the hung bombs managed to kick out two more on the runways, but the last four remained in the racks. Five minutes after this they were attacked by 15 enemy fighters. Two Messerschmitts, the rest Zeros made their passes from the rear or by diving under the bombers and pulling up behind to deliver their fire. The B-17E Fortress tail gunners, not seen before by the enemy let them come up close. Then, for some minutes before the Japanese discovered what had been added, it beat any skeet shoot ever seen. Five Zeros and one Messerschmidt went down. There were wounded in both Fortresses, and they were forced to land at Kendari for medical aid, gas, and repairs. An hour later, while they were still at work on one of the B-17's engines, five Zeros swept in to strafe the field. One of the B-17's took off in the face of the attacking planes and successfully fought off the three that went after it. The other two Zeros shot up the airport and further damaged the B-17 on the ground. The crew spent two more days endeavoring to repair his engines. Then, with Japanese ground troops approaching the field, they blew up the B-17
https://en.wikipedia.org/wiki?curid=15948763
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Quite late, actual physicians were employed in Sweden by the armed forces, because even in Gustav Vasa's time there were no scientifically trained physicians in the country. The only medical care available at that time was provided by so-called "bardskärare" (barbers), and in 1556 Gustav I prescribed that barbers should be appointed in the "fähnlein"s (200–500 men). By the regulations of 1571, the barbers was obliged to provide the army and navy with the required number of "feldshers" in the event of mobilization and wars. But since no special regulations on any kind of qualification existed, this also explains why the Swedish Army's medical care for such a long time and to such an extent was handled by registered or immigrated more or less unskilled German "feldshers". Probably anyone who was somewhat knowledgeable in the profession of bandage and dressing could gain employment as a regimental or company barber. It was not until 1669 that it was decided that they would be examined like other surgeons before admission. That this examination, however, left much to be desired, appears from a letters patent from 1685, in which it is stated:
https://en.wikipedia.org/wiki?curid=68905089
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a three-prong 120 V AC plug for laptops, a USB port and XM Radio Canada. The largest airplane in the world the Airbus A380, in this case operated by Emirates Airline, began regular service between Toronto's Lester B. Pearson Airport and Dubai in 2009. By 2009, most major airports in Canada were equipped with stand alone self-service customer check-in kiosks, which provided the passenger with a boarding pass for his/her flight. This represented the further extension of the technique known as the e-ticket which became the standard for purchasing an aircraft ticket several years earlier. In January 2010, the Government of Canada announced the use of full body scanner for the security checking of passengers boarding planes in Canada bound for the US. The scanners will be installed at the airports in Montreal, Toronto, Vancouver, Calgary, Edmonton and Halifax. The use of biometrics will become an important technique in the screening of those wishing to enter Canada. It is planned that between 2011 and 2013 the Department of Immigration and Citizenship will begin to deploy digital face and fingerprint scanning systems at overseas Canadian Visa offices for the issuance of visas to those intending to visit Canada.
https://en.wikipedia.org/wiki?curid=29991137
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Intel opened its first international manufacturing facility in 1972, in Malaysia, which would host multiple Intel operations, before opening assembly facilities and semiconductor plants in Singapore and Jerusalem in the early 1980s, and manufacturing and development centers in China, India, and Costa Rica in the 1990s. By the early 1980s, its business was dominated by dynamic random-access memory (DRAM) chips. However, increased competition from Japanese semiconductor manufacturers had, by 1983, dramatically reduced the profitability of this market. The growing success of the IBM personal computer, based on an Intel microprocessor, was among factors that convinced Gordon Moore (CEO since 1975) to shift the company's focus to microprocessors and to change fundamental aspects of that business model. Moore's decision to sole-source Intel's 386 chip played into the company's continuing success.
https://en.wikipedia.org/wiki?curid=14617
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AFDX was designed as the next-generation aircraft data network. Basing on standards from the IEEE 802.3 committee (commonly known as Ethernet) allows commercial off-the-shelf hardware to reduce costs and development time. AFDX is one implementation of deterministic Ethernet defined by ARINC Specification 664 Part 7. AFDX was developed by Airbus Industries for the A380, initially to address real-time issues for flight-by-wire system development. Building on the experience from the A380, the Airbus A350 also uses an AFDX network, with avionics and systems supplied by Rockwell Collins. Airbus and its EADS parent company have made AFDX licenses available through the EADS Technology Licensing initiative, including agreements with Selex ES and Vector Informatik GmbH. A of deterministic Ethernet is used on the Boeing 787 Dreamliner. Multiple switches can be bridged together in a cascaded star topology. This type of network can significantly reduce wire runs, thus the weight of the aircraft. In addition, AFDX can provide quality of service and dual link redundancy.
https://en.wikipedia.org/wiki?curid=3112664
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A key to high growth yields is a proper introduction of oxidative agents under the gas ambient so that the catalyst particle surfaces remain active for the longest possible period, which is presumably achieved by balancing the competition between amorphous carbon growth and sp graphitic crystal formation on the catalyst particles. Oxidants can not only remove or prevent amorphous carbon growth, but may also etch into graphite layers when used at higher than favorable concentrations. Hata et al. reported millimeter-scale vertically aligned 2.5 mm long SWCNTs using the water assisted ethylene CVD process with Fe/Al or aluminum oxide multilayers on Si wafers. It was proposed that controlled supply of steam into the CVD reactor acted as a weak oxidizer and selectively removed amorphous carbon without damaging the growing CNTs.
https://en.wikipedia.org/wiki?curid=51417988
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After overcoming their biggest challenge of the season, UMass received good news; both Gicewicz and Lindberg tested negative for COVID and drove overnight to Pittsburgh so they could play in the championship game. The Minutemen were making their second consecutive appearance in the title match and faced St. Cloud State in their first championship appearance. UMass got off to a good start, getting a goal from Aaron Bohlinger to open the scoring, and then the two teams played a mostly defensive battle for the remainder of the first. While killing off a penalty, a UMass defender grabbed the puck out of the air and threw it into center ice. A penalty for delay-of-game could have been called but nothing was forthcoming, much to the displeasure of the St. Cloud bench. Just minutes later, Massachusetts scored their second goal of the game. Upon review, however, it appeared that the play was offside and that the goal would be disallowed. Fortunately for the Minutemen, the play was allowed to stand and their two-goal lead held. The controversial calls didn't take the fight out of St. Cloud, who quadrupled their shot total in the second, but when Philip Lagunov scored an astounding goal on the penalty kill, the game looked to be slipping away from the Huskies. Matthew Kessel's power play marker later in the period all but sealed the game and the two teams played a fairly pedestrian third period, ending with UMass up 5–0 to win the program's first National Championship.
https://en.wikipedia.org/wiki?curid=67443386
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The most likely hypothesis is that the lineae on Europa were produced by a series of eruptions of warm ice as the Europan crust spread open to expose warmer layers beneath. The effect would have been similar to that seen in Earth's oceanic ridges. These various fractures are thought to have been caused in large part by the tidal flexing exerted by Jupiter. Because Europa is tidally locked to Jupiter, and therefore always maintains approximately the same orientation towards Jupiter, the stress patterns should form a distinctive and predictable pattern. However, only the youngest of Europa's fractures conform to the predicted pattern; other fractures appear to occur at increasingly different orientations the older they are. This could be explained if Europa's surface rotates slightly faster than its interior, an effect that is possible due to the subsurface ocean mechanically decoupling Europa's surface from its rocky mantle and the effects of Jupiter's gravity tugging on Europa's outer ice crust. Comparisons of "Voyager" and "Galileo" spacecraft photos serve to put an upper limit on this hypothetical slippage. A full revolution of the outer rigid shell relative to the interior of Europa takes at least 12,000 years. Studies of "Voyager" and "Galileo" images have revealed evidence of subduction on Europa's surface, suggesting that, just as the cracks are analogous to ocean ridges, so plates of icy crust analogous to tectonic plates on Earth are recycled into the molten interior. This evidence of both crustal spreading at bands and convergence at other sites suggests that Europa may have active plate tectonics, similar to Earth. However, the physics driving these plate tectonics are not likely to resemble those driving terrestrial plate tectonics, as the forces resisting potential Earth-like plate motions in Europa's crust are significantly stronger than the forces that could drive them.
https://en.wikipedia.org/wiki?curid=43127
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This may not come as too much of a surprise, since the packaging of DNA with proteins and RNA into chromatin takes place immediately after the DNA is synthesized. Therefore, replication timing dictates the time of assembly of chromatin. Less intuitive is the relationship between replication timing and the three-dimensional positioning of chromatin in the nucleus. It is now well-accepted that chromatin is not randomly organized in the cell nucleus, but the positions of each chromosome domain relative to its neighboring domains is characteristic of different cell types, and after this geography is established in each newly formed cell, the chromosome domains do not move appreciably until the next cell division. In all multi-cellular organisms where it has been measured, early replication takes place in the interior of the nucleus and the chromatin around the periphery is replicated later. Recently developed methods to measure the points where different parts of chromosomes touch each other are almost perfectly aligned to when they replicate. In other words, regions that are replicated early versus late are packaged in such a way as to be spatially segregated in the nucleus, with the intervening DNA containing regions of reduced origin activity. One possibility is that these different compartments within the nucleus, established and maintained without the aid of membranes or physical barriers, set thresholds for the initiation of replication so that the more accessible regions are the first to replicate. Another possibility is that the replication timing of a section of DNA contributes to the packaging of that DNA. It has been demonstrated that the protein Rif1 is involved in regulating this process.
https://en.wikipedia.org/wiki?curid=29573659
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Systematic collection of information is fundamental to successful practices. Collecting data useful for mental illness diagnosis and treatment is challenging, as we lack quantitative biomarkers that might be used in standard health informatics, such as body temperature or blood pressure. Largely, current diagnosis and treatment is driven by clinical interviews between professionals and patients. Interviews are not only difficult to draw standardized data from because of diverse individual experience, condition, and accuracy of a patient's memory. Rapid advancements in computation and storage systems have the potential to transform this data collection process. For example, a 2014 study in Ireland explored the use of a smartphone application to record daily mood and thoughts. Such a collection process would provide plentiful standardized data less afflicted by patient recollection issues.
https://en.wikipedia.org/wiki?curid=56194906
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After Gilbreth's retirement from Purdue, she continued to travel and deliver lectures. She also taught at several other colleges and universities, and became head of the Newark College of Engineering in 1941. Gilbreth was appointed the Knapp Visiting Professor at the University of Wisconsin's School of Engineering in 1955. She also taught at Bryn Mawr College and Rutgers University. Whilst teaching at Bryn Mawr, she met then student of social economy, Anne Gillespie Shaw, who later worked for Gilbreth Management Consultants, doing commercial research studies and became a lifelong friend and colleague. In 1964, at the age of eighty-six, Gilbreth became resident lecturer at Massachusetts Institute of Technology. In 1968, when her health finally began to fail, Gilbreth retired from her active public life and eventually entered a nursing home.
https://en.wikipedia.org/wiki?curid=39481
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The California Institute for Telecommunications and Information Technology (Calit2, previously Cal(IT)), also referred to as the Qualcomm Institute (QI) at its San Diego branch, is a $400 million academic research institution jointly run by the University of California San Diego (UCSD) and the University of California, Irvine (UCI); in January 2022, plans were announced to add University of California, Riverside to the consortium. Calit2 was established in 2000 as one of the four . As a multidisciplinary research institution, it is conducting research discovering new ways in which emerging technologies can improve the state's economy and citizens' quality of life. Keeping in mind its goal of addressing large-scale societal issues, Calit2 extends beyond education and research by also focusing on the development and deployment of prototype infrastructure for testing new solutions in real world environments. Calit2 also provides an academic research environment in which students can work alongside industry professionals to take part in conducting research and prototyping and testing new technologies.
https://en.wikipedia.org/wiki?curid=18510052
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Bolza published "The elliptic s-functions considered as a special case of the hyperelliptic s-functions" in 1900 which related to work he had been studying for his doctorate under Klein. However, he worked on the calculus of variations from 1901. Papers which appeared in the Transactions of the American Mathematical Society over the next few years were: "New proof of a theorem of Osgood's in the calculus of variations" (1901); "Proof of the sufficiency of Jacobi's condition for a permanent sign of the second variation in the so-called isoperimetric problems" (1902); "Weierstrass' theorem and Kneser's theorem on transversals for the most general case of an extremum of a simple definite integral" (1906); and "Existence proof for a field of extremals tangent to a given curve" (1907). His text "Lectures on the Calculus of Variations" published by the University of Chicago Press in 1904, became a classic in its field and was republished several times: the augmented German edition of the same work was considered by his former student Gilbert Ames Bliss ""a classic, indispensable to every scholar in the field, and much wider in its scope than his earlier book"".
https://en.wikipedia.org/wiki?curid=10217078
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Thermoplastics, thermosets, and composites can be analyzed using FTIR and UV spectroscopy as well as NMR and ESEM. Failed samples can either be dissolved in a suitable solvent and examined directly (UV, IR and NMR spectroscopy) or as a thin film cast from solvent or cut using microtomy from the solid product. The slicing method is preferable since there are no complications from solvent absorption, and the integrity of the sample is partly preserved. Fractured products can be examined using fractography, an especially useful method for all fractured components using macrophotography and optical microscopy. Although polymers usually possess quite different properties to metals and ceramics, they are just as susceptible to failure from mechanical overload, fatigue and stress corrosion cracking if products are poorly designed or manufactured. Many plastics are susceptible to attack by active chemicals like chlorine, present at low levels in potable water supplies, especially if the injection mouldings are faulty.
https://en.wikipedia.org/wiki?curid=15964561
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On 23 April 2007 Director Sergei Kiriyenko of Russia's Federal Agency for Atomic Energy (Rosatom) met with Armenia's Energy Minister Armen Movsisyan and Ecology Minister, Vardan Ayvazyan, where the Russian side indicated Moscow's willingness to help Armenia build a new nuclear power plant, in the event that Armenian officials opted to head in that direction. This statement was followed by former President Robert Kocharyan's speech given to Yerevan State University students on 27 April 2007 during which he said that serious work on the fate of Armenia's atomic energy is underway and practical steps will be taken in this direction in 2008–2009. The president considered it desirable to construct a new nuclear power plant based on the existing infrastructures and new technologies. However, in his words, it is necessary to determine the amount needed and examine what impact it will have on rates. Robert Kocharyan said that in 2012–2013, active work will be carried out to build a new nuclear power plant and modernize the current one.
https://en.wikipedia.org/wiki?curid=8003578
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Following this the 8th Division was deployed to defend Singapore's north-west coast. Due to the casualties suffered in Johore most of the division's units were at half-strength, and the replacements that had been received—a draft of about 1,900 replacements was sent in late January—were barely trained, some having as little as two weeks' training in Australia before being dispatched. Assigned larger-than-normal frontages to defend along beaches that were ill-suited for defence, the 22nd and 27th Brigades were spread thin on the ground with large gaps in their lines. The commander of the Singapore fortress, Lieutenant General Arthur Ernest Percival, believed that the Japanese would land on the north-east coast of the island and deployed the near full-strength British 18th Division to defend this sector. Nevertheless, on 8 February the Japanese landed in the Australian sector, and the 8th Division was forced from its positions after just two days of heavy fighting. A subsequent landing took place at Kranji, but the division was unable to turn this back and subsequently withdrew to the centre of the island.
https://en.wikipedia.org/wiki?curid=22738876
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In 1733 Joseph hoped to get an appointment to a Portsmouth mathematical school, but commented sadly that other candidates were 'backed by great interests'; so in August of the same year he started to work at Gossfield Hall, Essex, for the family of Ann Knight, née Craggs, and John Knight MP; he was almost certainly tutoring James Newsome, her son by an earlier marriage, perhaps in navigation for a career in the Navy. There he certainly came to know well Walter Harte, and a year or so later was thanked by him, for help with what Harte called his 'Pamphlet', by date likely to have been Harte's "Essay on Reason". The Essay was written after the sudden and unexpected death of John Knight in October 1733 and contains an elegy to him. Ann Knight subsequently appointed Walter Harte Rector of Gossfield's St. Catherine's church. Shortly after this, Joseph used his friendship with Walter Harte in an apparently unsuccessful attempt to get his youngest brother Howell into Saint Mary Hall, Oxford, now part of Oriel College. The only record of Howell's presence at Saint Mary Hall is the single day of his matriculation, 25 November 1735, and there is no sign that he ever slept or ate there, although his registration fees continued to be paid until 1738.
https://en.wikipedia.org/wiki?curid=30866164
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The earliest recorded commercial landing data specific to Kellet's whelk dates back to 1979, but prior to this it may have been recorded as "miscellaneous mollusks" or "sea snails". Landings data indicate an increased intake starting in 1993 at 4590 pounds (2 metric tons), with the highest landings in 2006 being 191,177 pounds (87 metric tons). This represents an over forty-fold increase in thirteen years. Kellet's whelk landings have been reported at 24 ports from 1979 to 2008, with 80 percent of landings occurring at four ports. The majority of landings (439,828 pounds, 200 metric tons in 2008) occurred at Santa Barbara, with approximately 40 percent of the total landings reported. The other three top ports were Terminal Island, San Diego, and San Pedro. Dana Point is also an important port. Ex-vessel value from the 2008 commercial harvest of Kellet's whelks was approximately $132,700, with price per pound averaging $0.82 ($1.81 per kilogram). Since 1979, the fishery's ex-vessel value has ranged from $94 (1988) to approximately $136,000 (2007) and the ex-vessel price has ranged from $0.24 per pound ($0.53 per kilogram) in 1981 to $0.88 per pound ($1.94 per kilogram) in 1992. The average weight of a Kellet's whelk in a fishery is 150 g.
https://en.wikipedia.org/wiki?curid=38470773
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By 6000 BC, the early inhabitants of Mesoamerica were experimenting with the domestication of plants, a process that eventually led to the establishment of sedentary agricultural societies. The diverse climate allowed for wide variation in available crops, but all regions of Mesoamerica cultivated the base crops of maize, beans, and squashes. All Mesoamerican cultures used Stone Age technology; after c. 1000 AD copper, silver and gold were worked. Mesoamerica lacked draft animals, did not use the wheel, and possessed few domesticated animals; the principal means of transport was on foot or by canoe. Mesoamericans viewed the world as hostile and governed by unpredictable deities. The ritual Mesoamerican ballgame was widely played. Mesoamerica is linguistically diverse, with most languages falling within a small number of language families—the major families are Mayan, Mixe–Zoquean, Otomanguean, and Uto-Aztecan; there are also a number of smaller families and isolates. The Mesoamerican language area shares a number of important features, including widespread loanwords, and use of a vigesimal number system.
https://en.wikipedia.org/wiki?curid=18449273
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Chien became a member of the faculty at the University of California at San Diego, acting as director of the Institute for Molecular Medicine from 2000 to 2005, with an adjunct appointment as a Professor of the Salk Institute. During that period, Chien was also responsible for co-founding the Institute of Molecular Medicine at Beijing's Peking University. Chien then worked as Scientific Director of the Cardiovascular Research Center at Massachusetts General Hospital from 2005 to 2012, concurrent to directing the Cardiovascular Program of the Harvard Stem Cell Institute from 2007 to 2013. In 2013 Chien took up a position as Professor of Cardiovascular Research and Research Director or the Wallenberg-Cardiovascular Initiative at Karolinska Institute in Stockholm, Sweden. In an interview, Chien discussed the opportunity at KI to work closely with Astrazeneca in Molndal to move forward discoveries in regenerative therapeutics made in his lab towards clinical application, as well as praising Sweden as “a country that has decided to put its faith in science and technology". Dr. Chien has received numerous grants from the National Heart, Lung, And Blood Institute, dating back to 1985. He has also applied for several patents, securing a total of 17.
https://en.wikipedia.org/wiki?curid=64948319
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In August 1922 Marie Curie became a member of the League of Nations' newly created International Committee on Intellectual Cooperation. She sat on the committee until 1934 and contributed to League of Nations' scientific coordination with other prominent researchers such as Albert Einstein, Hendrik Lorentz, and Henri Bergson. In 1923 she wrote a biography of her late husband, titled "Pierre Curie". In 1925 she visited Poland to participate in a ceremony laying the foundations for Warsaw's Radium Institute. Her second American tour, in 1929, succeeded in equipping the Warsaw Radium Institute with radium; the Institute opened in 1932, with her sister Bronisława its director. These distractions from her scientific labours, and the attendant publicity, caused her much discomfort but provided resources for her work. In 1930 she was elected to the International Atomic Weights Committee, on which she served until her death. In 1931, Curie was awarded the Cameron Prize for Therapeutics of the University of Edinburgh.
https://en.wikipedia.org/wiki?curid=20408
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Moffit also explains how discontinuities can reveal misconceptions about historic aesthetic schemas when scientific information is absent. Referencing a sample taken from an 18th-century colonial home in Williamsburg, Virginia, Moffit explains that the underlying layers on both hinge and door were initially painted in the same color, in keeping with the aesthetic of their time. However, analysis of a subsequent layer exposed an incongruous black and white schema, indicating a failed attempt at a colonial revival aesthetic. Without proper understanding of the historic record, these samples might lead to false conclusions if obtained through inferior “scratch and match” methods and visual inspection alone. As mentioned in the section discussing sampling techniques, methods of collection have improved considerably over the past few decades, and more reliable scientific protocols have replaced the older “scratch and match” method that Baty considers “pseudo analysis” as results are unreliable and deceiving.
https://en.wikipedia.org/wiki?curid=14104519
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