• Based on the different feedback we received to this plan, the MAC suggests that the project remain focused on the normal step-by-step assembly strategy, but that it evaluate options to reduce risks and the time required for the assembly and the transport of components in order to provide more confidence in the dates for First Plasma and Deuterium-Tritium operation," Sharan said. (acronymfinder.com)
  • The primary OFES program focus is still on deuterium-tritium (DT) fusion in toroidal (donut-shaped) plasma confinement systems. (acronymfinder.com)
  • Each successful deuterium-tritium fusion would produce an alpha particle (an atom of helium-4), an energetic neutron and a good deal of energy. (acronymfinder.com)
  • However, in the jargon of the DOE, these substances are called "advanced' fuels, because the confinement and temperature conditions necessary for them go beyond those for deuterium-tritium . (acronymfinder.com)
  • The plan is thus to begin operations with a tungsten divertor from the start, instead of a carbon-fiber divertor for the beginning of operations and a tungsten divertor for deuterium-tritium operation in 2027. (acronymfinder.com)
  • Deuterium-tritium fusion, which most controlled fusion experiments today are trying to achieve, produces energetic neutrons, from which energy can easily be harvested and converted to useful things like steam or electric power. (acronymfinder.com)
  • Developing materials resistant enough to withstand the high-power impact of the neutrons from deuterium-tritium (DT) reactions is of utmost importance for the future of fusion. (acronymfinder.com)
  • He proposed to use lithium-6 deuteride, which would make tritium and facilitate deuterium-tritium fusion reactions. (acronymfinder.com)
  • Recent scientific and technical progress in magnetic fusion experiments has resulted in the achievement of plasma parameters (density and temperature) which enabled the production of significant bursts of fusion power from deuterium-tritium fuels and the first studies of the physics of burning plasmas. (unt.edu)
  • A review of the technical and scientific results from the deuterium-tritium experiments on the Joint European Torus (JET) and the Tokamak Fusion Test Reactor (TFTR) is given with particular emphasis on alpha-particle physics issues. (unt.edu)
  • In the wiki article about fusion power I read that Deuterium-Deuterium fusion produce Tritium so I wonder if this can be used as a way to produce tritium for Deuterium-Tritium fusion power plants in case there is a problem with lithium resources. (physicsforums.com)
  • If we can use D-D fusion we can just leave the tritium in the plasma or put it back in (if it is kicked out), it will easily fuse with another deuterium nucleus. (physicsforums.com)
  • Hydrogen, deuterium and tritium are very close cousins. (iter.org)
  • Of all possible fusion reactions, the one that involves deuterium (D) and the other heavy isotope of hydrogen tritium (T) is the "easiest" to achieve in the present state of technology. (iter.org)
  • To date, only JET and the American tokamak TFTR have burned the "actual fusion fuels" (deuterium and tritium) and produced significant levels of fusion energy. (iter.org)
  • We determine the dependence of key Inertial Confinement Fusion (ICF) hot spot simulation properties on the deuterium-tritium fuel adiabat, here modified by addition of energy to the cold shell. (osti.gov)
  • The interpretation of tritium migration in surface and/or underground waters at the former nuclear test site at Semipalatinsk (STS) can greatly benefit from the analysis of other chemical or isotopic tracers, such as deuterium and 18O. (irsn.fr)
  • Particular attention was paid at establishing whether or not evaporation processes in salt lakes lead to a significant increase in the content of heavy hydrogen isotopes (deuterium and tritium) in the brines. (irsn.fr)
  • The recently proposed super-Marx generator pure deuterium microdetonation ignition concept is compared to the Lawrence Livermore National Ignition Facility (NIF) Laser deuterium-tritium fusion-fission hybrid concept (LIFE). (osti.gov)
  • This paper uses neutron emission spectrometry (NES), with the spectrometer TOFOR, to estimate the deuterium-tritium (DT) equivalent fusion yields of deuterium-only (DD) pulses at the tokamak JET. (diva-portal.org)
  • A fusion reactor requires plasma pre-heating before the rate of deuterium-tritium fusion reactions becomes significant. (upc.edu)
  • 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 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)
  • Also, its large mass difference with protium ( 1 H) (deuterium has a mass of 2.014 102 u , compared to the mean hydrogen atomic weight of 1.007 947 u , and protium's mass of 1.007 825 u ) confers non-negligible chemical dissimilarities with protium-containing compounds, whereas the isotope weight ratios within other chemical elements are largely insignificant in this regard. (wikipedia.org)
  • 13. A deuterium-enriched compound of claim 1, wherein the compound is selected from compounds 1-12 of Table 1. (freepatentsonline.com)
  • It is another object of the present invention to provide pharmaceutical compositions comprising a pharmaceutically acceptable carrier and a therapeutically effective amount of at least one of the deuterium-enriched compounds of the presentinvention or a pharmaceutically acceptable salt thereof. (patentgenius.com)
  • It is another object of the present invention to provide a method for treating a disease selected from prophylaxis, Influenzavirus A, and Influenzavirus B, comprising administering to a host in need of such treatment a therapeutically effectiveamount of at least one of the deuterium-enriched compounds of the present invention or a pharmaceutically acceptable salt thereof. (patentgenius.com)
  • As a source of deuterium, it is utilized for preparing specifically labeled isotopologs of organic compounds. (alfa.com)
  • Concert will also provide GSK with deuterium-modified versions of three GSK pipeline compounds for GSK to develop. (gsk.com)
  • More interestingly, selective incorporation of deuterium from D2O has been discovered, which offers an attractive one-step method to access deuterated compounds. (diva-portal.org)
  • The novel deuterium-containing chalcone derivatives may have interesting biological effects and improved metabolic properties as compared with the parent compounds. (mdpi.com)
  • Mass spectroscopy based measurement of the rate and/or extent of the hydrogen/deuterium exchange. (ebi.ac.uk)
  • The differences are much more pronounced in vibrational spectroscopy such as infrared spectroscopy and Raman spectroscopy, and in rotational spectra such as microwave spectroscopy because the reduced mass of the deuterium is markedly higher than that of protium. (wikipedia.org)
  • In nuclear magnetic resonance spectroscopy, deuterium has a very different NMR frequency (e.g. 61 MHz when protium is at 400 MHz) and is much less sensitive. (wikipedia.org)
  • Deuterium oxide is used in nuclear magnetic resonance spectroscopy (NMR). (alfa.com)
  • Hamamatsu's L11798 and L11799 deuterium light source units offer ultrahigh brightness and ease of use for a wide variety of UV applications such as semiconductor inspection, film thickness measurement, UV-visible spectroscopy, and environmental analysis. (coatingsworld.com)
  • Natural abundance deuterium 2D NMR spectroscopy in chiral liquid crystal was successfully used to efficiently analyze the enantiomeric composition of organic chiral building blocks involved in the syntheses of natural and synthetic bioactive products. (archives-ouvertes.fr)
  • Deuterium bromide is hydrogen bromide with the hydrogen being the heavier isotope deuterium. (wikipedia.org)
  • By comparing the ratio of "heavy water" (in which one hydrogen atom is replaced by its heavier isotope deuterium) to "normal water" in the atmosphere of Mars, scientists at NASA and the European Southern Observatory (ESO) have come to the conclusion that the Red Planet was once home to a large ocean that covered a greater portion of the planet's surface than the Atlantic Ocean does on Earth. (iter.org)
  • Thus a protein that contains some deuterium will be heavier than one that contains all hydrogen. (wikibooks.org)
  • In this connexion there is special interest in the results on lifetime annihilation spectra of positrons (orthopositronium) in liquid and solid deuterium and comparison of these results with corresponding results on protium . (thefreelibrary.com)
  • Ötvös SB, Hsieh C-T, Wu Y-C, Li J-H, Chang F-R, Fülöp F. Continuous-Flow Synthesis of Deuterium-Labeled Antidiabetic Chalcones: Studies towards the Selective Deuteration of the Alkynone Core. (mdpi.com)
  • INTERNATIONAL ATOMIC ENERGY AGENCY, Introduction to Body Composition Assessment Using the Deuterium Dilution Technique with Analysis of Saliva Samples by Fourier Transform Infrared Spectrometry, Human Health Series No. 12, IAEA, Vienna (2011). (iaea.org)
  • A kinetic study of the hydrogen-deuterium exchange reaction of cyclohexanone in aqueous solution, as catalyzed by proline derivatives, has revealed valuable structure-activity relationships. (mit.edu)
  • By monitoring the effect of deuterium decoupling on the decay of transverse N-15 magnetization in D-N-15 spin pairs during multiple-refocusing echo sequences, we have determined fast D-D exchange rates k(D) and compared them with fast H-H exchange rates k(H) in tryptophan to determine the kinetic isotope effect as a function of pH and temperature. (epfl.ch)
  • Transgenic, cytokinin-overproducing Arabidopsis thaliana plants were incubated in liquid culture media enriched with 30% deuterium oxide, and incorporation into the different parts of the cytokinin molecule was analysed by capillary liquid chromatography/frit-fast atom bombardment mass spectrometry after precolumn propionylation. (nih.gov)
  • During the final week of each diet, 0.7 g D 2 O was given per kilogram of body water and deuterium incorporation into the erythrocyte cholesterol pool was measured for 24 hours. (ahajournals.org)
  • 26 27 More recent methods, including determination of deuterium incorporation into cholesterol 24 28 29 and mevalonic acid levels in plasma 30 31 32 or urine, 33 offer the advantage of short-term, noninvasive measurement. (ahajournals.org)
  • 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)
  • Normally, deuterium gas used in nuclear experiments is delivered via compressed gas cylinders. (fusor.net)
  • 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)
  • These light sources consist of an air-cooled H2D2 deuterium lamp head unit attached to a power supply unit via cable. (coatingsworld.com)
  • The energies of spectroscopic lines for deuterium and light hydrogen (hydrogen-1) therefore differ by the ratios of these two numbers, which is 1.000272. (wikipedia.org)
  • The wavelengths of all deuterium spectroscopic lines are shorter than the corresponding lines of light hydrogen, by a factor of 1.000272. (wikipedia.org)
  • Metges, C. C. A simplified mass isotopomer approach to estimate gluconeogenesis ratein vivo using deuterium oxide. (alfa.com)
  • Deuterium in vivo labelling of cytokinins in Arabidopsis thaliana analysed by capillary liquid chromatography/frit-fast atom bombardment mass spect. (nih.gov)
  • An improved in vivo deuterium labeling method for measuring the biosynthetic rate of cytokinins. (diva-portal.org)
  • 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)
  • FUSE has the right combination to tackle deuterium measurements in the local universe. (stsci.edu)
  • In cases where evaporation processes were found to be significant, the evaporation rate of the remaining water was estimated with the aid of the deuterium measurements. (irsn.fr)
  • At the same time, the precision of deuterium uptake measurements was improved for nearly every peptide examined. (ku.edu)
  • Deuterium depletion is a new complementary modality in oncotherapy and in prevention of the disease as it was reviewed in Positive Health PH Online earlier this year in Issue 203 February 2013. (positivehealth.com)
  • After publication of the previous article, Molecular and Clinical Effects of Deuterium Depleted Water in Treatment and Prevention of Cancer in Positive Health Online a demand emerged for the explanation of the use of DDW in daily practice addressing the correlation between the application of deuterium depletion, life skills and diet. (positivehealth.com)
  • In order to gain comparable data, a new equation, the expression of 'Deuterium depletion Unit' (DdU) was introduced. (positivehealth.com)
  • Implantation with deuterium induces more anisotropy field changes than with helium implantation, but requires less implantation time than when hydrogen is the species. (ip.com)
  • Deuterium as an ion implantation species is a better compromise choice for contiguous disk bubble devices than either helium or hydrogen. (ip.com)
  • Deuterium has a natural abundance in Earth's oceans of about one atom in 6420 of hydrogen. (wikipedia.org)
  • The abundance of deuterium changes slightly from one kind of natural water to another (see Vienna Standard Mean Ocean Water ). (wikipedia.org)
  • Such material has lower deuterium and higher heavy element abundance fractions. (stsci.edu)
  • The blue regions indicate the spectral fingerprint of deuterium (marked "D I"). The depth and shape of these fingerprints compared to others such as oxygen and regular hydrogen, tells astronomers the relative abundance of deuterium in the gas being sampled on the sight line to the star. (stsci.edu)
  • Lithium vapor injected into fusor with deuterium fusion initiation. (fusor.net)
  • 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)
  • 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)
  • The chemical symbol for Deuterium is 2 H but D is also used often. (wikipedia.org)
  • Heavy water", or D2O (water in which deuterium substitutes for hydrogen), is first separated from regular water by chemical exchange processes, and is then submitted to electrolysis in order to obtain deuterium gas. (iter.org)
  • Two-bond deuterium isotope effects on 13 C chemical shifts are correlated with calculated OH stretching frequencies. (mdpi.com)
  • The role of deuterium in molecular evolution is most interesting question of nowdays science comprises two points mainly: the evolution of deuterium itself as well as the chemical processes going with participation of deuterium. (o8ode.ru)
  • The content of deuterium in hot mineral water may be increased due to the physical chemical processes of the deuterium accumulation. (o8ode.ru)
  • If this is true, this is a significant fact regarding thermal stability of deuterated macromolecules in the preservation of life under thermal conditions, because chemical bonds with participation of deuterium are stronger than those ones formed of hydrogen. (o8ode.ru)
  • The discovery of deuterium and the marked differences in the physical and chemical properties of hydrogen and deuterium, together with an efficient method for the separation of these isotopes, have opened an interesting field of research in several of the major branches of science. (allgreatquotes.com)
  • Typically HSQC spectra are recorded at a series of timepoints while the hydrogen is exchanging with the deuterium. (wikibooks.org)
  • We are thus led to ask whether o-Ps is indeed absent from the time-resolved annihilation spectra in condensed deuterium. (thefreelibrary.com)
  • The whole process was followed through time-resolved deuterium spectra and was characterized by a continuous decrease of the measured. (lu.se)
  • The whole process was followed through time-resolved deuterium spectra and was characterized by a continuous decrease of the measured quadrupolar splitting, proportional to the nematic order parameter. (lu.se)
  • 1, which increases during the labelling phase, and which decreases after deuterium has been withdrawn. (royalsocietypublishing.org)
  • It is found that the concentration of implanted deuterium decreases rapidly in the samples as a function of anneal time. (diva-portal.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)
  • We explore a dual isotope approach akin to the concept of deuterium-excess (d), to estimate past relative humidity influences while accounting for variation caused by isotopes in precipitation. (epa.gov)
  • Debris fields only contain Metal and Crystal, increasing the probability of a raid from those in search of Deuterium. (wikipedia.org)
  • The processes accompanying accumulation of deuterium in the hydrosphere are solar radiation, volcanic geothermal processes and electric discharges in the atmosphere. (o8ode.ru)
  • These natural processes could lead to the enrichment of the hydrosphere by deuterium in the form of HDO which evaporates more slowly then H 2 O, and condenses faster. (o8ode.ru)
  • Constant sources of deuterium are explosions of nova stars and thermonuclear processes frequently occurring inside the stars. (o8ode.ru)
  • Cohen, J. D. Measuring the turnover rates of Arabidopsis proteins using deuterium oxide: an auxin signaling case study. (alfa.com)
  • The present application describes deuterium-enriched fulvestrant, pharmaceutically acceptable salt forms thereof, and methods of treating using the same. (freepatentsonline.com)
  • 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)
  • The experimental data are explained by a model where the deuterium migrates rapidly and becomes trapped and de-trapped at implantation-induced defects which exhibit a slightly shallower depth distribution than the implanted deuterium ions. (diva-portal.org)
  • Deuterium is a desirable ion species for the ion implantation of bubbl devices and especially for contiguous disk bubble devices. (ip.com)
  • The complexes are tentatively identified as carbon-deuterium at a Si-vacancy and a dissociation energy (ED) of approximately 4.9 eV is extracted for the deuterium-vacancy complexes. (diva-portal.org)
  • The "D" is deuterium, an isotope or variant form of hydrogen often termed "heavy hydrogen. (medindia.net)
  • BUDAPEST, Hungary , March 13, 2019 / B3C newswire / -- Science ignored the presence of the heavy hydrogen, deuterium (D) in living organisms for 60 years since its discovery by Harold C. Urey in the early 30's, despite the fact, that the concentration of deuterium is 6-time higher than that of the normal blood calcium level. (wn.com)
  • We present a first time-resolved deuterium NMR study on wormlike micelles under shear. (lu.se)