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  • content
  • Here we describe the use of binomial distribution fitting with asymmetric linear squares regression for calculating the accurate deuterium content for mass envelopes of low signal or that contain significant overlap. (springer.com)
  • oxide
  • Interference with deoxyribonucleic acid replication need not be a primary mechanism in the blockade of cell division by deuterium oxide, but current hypotheses on the molecular basis of the blockade do suggest that such interference might take place under appropriate conditions. (sciencemag.org)
  • To reduce cost, deuterium oxide and a proton exchange membrane (PEM) fuel cell was used. (fusor.net)
  • nuclear
  • Normally, deuterium gas used in nuclear experiments is delivered via compressed gas cylinders. (fusor.net)
  • The generated deuterium gas is "wet" (100% humidity) which will inhibit nuclear fusion. (fusor.net)
  • 2. A nuclear fusion reactor as defined in claim 1 in which said lithium deuterotritide is normally solid adjacent the side and ends of the chamber and liquid in the central region of the chamber where it is subject to heating during operation,the volume of lithium deuterotritide being such that an open space exists at the surface of the liquid, said space containing deuterium. (patentgenius.com)
  • 3. A nuclear fusion reactor as defined in claim 2 including a plurality of nozzles in one of said electrodes, and duct means for withdrawing deuterium from said space and recirculating it to said nozzles, the nozzles being positioned to injectsaid deuterium into the liquid at a plurality of points to form a curtain of bubbles in the liquid. (patentgenius.com)
  • ratio
  • The deuterium/protium ratio of the comet 67P/Churyumov-Gerasimenko , as measured by the Rosetta space probe , is about three times that of earth water. (wikipedia.org)
  • First, by observing numerous stars in the region directly around the sun (within 100 parsecs or about 325 light years), FUSE observations have very strongly confirmed that the ratio of deuterium to hydrogen (D/H) is constant, at a value of about 15 parts per million (ppm) of D relative to H. Researchers have been working toward confirming this idea and quantifying the local value of D/H for decades! (stsci.edu)
  • The different values of the deuterium-to-hydrogen ratio (D/H) in water observed in various bodies in the Solar System. (esa.int)
  • The ratio of deuterium to hydrogen in water is a key diagnostic to determining where in the Solar System an object originated and in what proportion asteroids and/or comets contributed to Earth's oceans. (esa.int)
  • experiments
  • Autoradiographic experiments support the suggestion, for whereas normal sea urchin eggs incorporate H 3 -thymidine into deoxyribonucleic acid from almost the beginning of development, cells immersed in deuterium-enriched media do not. (sciencemag.org)
  • At Tore Supra, experiments with deuterium plasmas have been ongoing for the past twenty-two years. (iter.org)
  • Present tokamaks or stellarators all conduct their experiments with "deuterium-only" plasmas, whose behaviour in terms of confinement, heating, and general "plasma engineering" is very close to that of a DT plasma. (iter.org)
  • FUSE
  • The spectral fingerprints of deuterium are very prevalent in the FUSE spectral range, especially for objects in and near our galaxy (low redshift). (stsci.edu)
  • However, the deuterium fingerprints are only slightly separated from those of normal hydrogen, and so one needs the high spectral resolution of FUSE in addition to the spectral coverage. (stsci.edu)
  • FUSE has the right combination to tackle deuterium measurements in the local universe. (stsci.edu)
  • Bang
  • Understanding how much deuterium was created in the Big Bang and how much has been destroyed over time, are two of the Holy Grails of modern astrophysics. (stsci.edu)
  • thus
  • Deuterium/protium ratios thus continue to be an active topic of research in both astronomy and climatology. (wikipedia.org)
  • The rate of hydrogen-to-deuterium exchange within the amide hydrogen on the backbone of biotherapeutics provides solvent accessibility information and thus protein structure and conformation can be inferred. (thermofisher.com)
  • Adding deuterium should not change the number of T cells, and thus one typically assumes steady state for the total cell population during the labelling experiment. (royalsocietypublishing.org)
  • Thus, deuterium serves as a particularly important marker. (o8ode.ru)
  • Differences
  • Comparison of the differences in deuterium uptake for peptic peptides produced in the absence and presence of ligand revealed regions of the proteins that are protected against deuterium exchange upon ligand binding. (springer.com)
  • water
  • Soon after deuterium's discovery, Urey and others produced samples of " heavy water " in which the deuterium content had been highly concentrated. (wikipedia.org)
  • Scientists in China reported a less expensive, more eco-friendly method for making large quantities of deuterium depleted drinking water. (medindia.net)
  • Deuterium-depleted water may be more healthier form of water. (medindia.net)
  • Deuterium-depleted water usually contains about 125 ppm. (medindia.net)
  • They cite accumulating evidence that water with high levels of deuterium may have adverse health effects on animals and plants, while deuterium-depleted water may be useful in treatment of certain diseases. (medindia.net)
  • Existing ways of removing deuterium from water tend to be expensive, inefficient, or environmentally harmful. (medindia.net)
  • They describe a new method that helps overcome these problems, and could be the basis for the first industrial-scale production of deuterium-depleted water. (medindia.net)
  • It can be presumed that primary water might contain more deuterium at early stages of evolution of first living structures, and deuterium was distributed non-uniformly in the hydrosphere and atmosphere (Ignatov & Mosin, 2012). (o8ode.ru)
  • interpretation
  • Although deuterium labelling is increasingly being used, the interpretation of the data in terms of the underlying kinetics of the cells has turned out to be notoriously difficult [ 1 , 8 , 10 , 16 - 18 ]. (royalsocietypublishing.org)
  • However, a detailed interpretation of the changes in deuterium exchange upon ligand binding can be challenging because of the presence of ligand-induced changes in protein structure and dynamics. (springer.com)
  • changes
  • If it was so, perhaps this was the answer to the question why the quantity of deuterium increased slitely during the global changes of climate for worming conditions. (o8ode.ru)
  • form
  • In particular, when stars form out of gas, any deuterium in the star is just about the first thing to get destroyed. (stsci.edu)
  • exchange
  • However, ligand binding can also result in increased deuterium exchange in other parts of the protein, presumably through allosteric effects. (springer.com)
  • stars
  • Deuterium is destroyed in the interiors of stars faster than it is produced. (wikipedia.org)
  • Furthermore, we can't just measure deuterium toward one or two stars and get "the answer" we are after. (stsci.edu)
  • One may suggest, that the very reliable source of producing of deuterium theoretically may to be the numerical explosions of nova stars, but deuterium itself is very readily destroyed in those stars. (o8ode.ru)