Gotowe bibliografie tematyczne / Ruthenium Isotopes

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Gotowa bibliografia na temat „Ruthenium Isotopes”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 22 czerwca 2024

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Artykuły w czasopismach na temat "Ruthenium Isotopes"

Journal, Baghdad Science. "Study of the properties of Ru-isotopes using the proton-neutron interacting boson model (IBM-2)." Baghdad Science Journal 7, no. 1 (March 7, 2010): 76–89. http://dx.doi.org/10.21123/bsj.7.1.76-89.

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The proton-neutron interacting boson model (IBM-2) has been used to make a schematic study of the Ruthenium ( ) isotopes of mass region around with and . For each isotope of the values of the IBM-2 Hamiltonian parameters, which yield an acceptable results for excitation energies in comparison with those of experimental data, have been determined. Fixed values of the effective charges ( ) and of the proton and neutron g factors ( and ) have been chosen for all isotopes under study. The calculated electric quadrupole moments of state, transitions, the magnetic dipole moments transitions and mixi

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Arora, B. K., D. Mehta, Rakesh Rani, T. S. Cheema, and P. N. Trehan. "Coulomb excitation of ruthenium isotopes." Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 24-25 (April 1987): 460–63. http://dx.doi.org/10.1016/0168-583x(87)90683-5.

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Kim, Seonho, Kwang Hyun Sung, and Kyujin Kwak. "Isotopic Compositions of Ruthenium Predicted from the NuGrid Project." Astrophysical Journal 924, no. 2 (January 1, 2022): 88. http://dx.doi.org/10.3847/1538-4357/ac35e1.

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Abstract The isotopic compositions of ruthenium (Ru) are measured from presolar silicon carbide (SiC) grains. In a popular scenario, the presolar SiC grains formed in the outskirt of an asymptotic giant branch (AGB) star, left the star as a stellar wind, and joined the presolar molecular cloud from which the solar system formed. The Ru isotopes formed inside the star, moved to the stellar surface during the AGB phase, and were locked into the SiC grains. Following this scenario, we analyze the Nucleosynthesis Grid (NuGrid) data, which provide the abundances of the Ru isotopes in the stellar wi

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Arblaster, John W. "The Discoverers of the Ruthenium Isotopes." Platinum Metals Review 55, no. 4 (October 1, 2011): 251–62. http://dx.doi.org/10.1595/147106711x592448.

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Bork, J., H. Schatz, F. Käppeler, and T. Rauscher. "Proton capture cross sections of the ruthenium isotopes." Physical Review C 58, no. 1 (July 1, 1998): 524–35. http://dx.doi.org/10.1103/physrevc.58.524.

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Shibata, Keiichi. "Evaluation of neutron nuclear data on ruthenium isotopes." Journal of Nuclear Science and Technology 50, no. 12 (December 2013): 1177–87. http://dx.doi.org/10.1080/00223131.2013.838912.

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Marti, Kurt, Mario Fischer-Gödde, and Carina Proksche. "Meteoritic Molybdenum and Ruthenium Isotopic Abundances Document Nucleosynthetic p-process Components." Astrophysical Journal 956, no. 1 (September 29, 2023): 7. http://dx.doi.org/10.3847/1538-4357/acee81.

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Abstract Anomalies in isotopic abundances of Mo and Ru in solar system matter were found to document variable contributions of the nucleosynthetic s-process component. We report isotopic relations of ϵ 92Mo versus ϵ 100Ru in meteorites from chondritic parent bodies, iron meteorites, and achondrites that reveal deviations from expected s-process abundance variations. We show that two p-process isotopes 92Mo and 94Mo require the presence of distinct p-process components in meteoritic materials. The nucleosynthetic origin of abundant magic (N = 50) p-process nuclides, covering the mass range of Z

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Hanson, Susan K., Matthew E. Sanborn, Holly R. Trellue, and William S. Kinman. "Nuclear Sample Provenance and Age Determination Using Ruthenium Isotopes." Analytical Chemistry 94, no. 8 (February 14, 2022): 3645–51. http://dx.doi.org/10.1021/acs.analchem.1c05218.

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Forest, D. H., R. A. Powis, E. C. A. Cochrane, J. A. R. Griffith, and G. Tungate. "High resolution laser spectroscopy of naturally occurring ruthenium isotopes." Journal of Physics G: Nuclear and Particle Physics 41, no. 2 (January 20, 2014): 025106. http://dx.doi.org/10.1088/0954-3899/41/2/025106.

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Nystrom, A., and M. Thoennessen. "Discovery of yttrium, zirconium, niobium, technetium, and ruthenium isotopes." Atomic Data and Nuclear Data Tables 98, no. 2 (March 2012): 95–119. http://dx.doi.org/10.1016/j.adt.2011.12.002.

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Rozprawy doktorskie na temat "Ruthenium Isotopes"

Takam, Rungdham. "Determination of dose distribution of Ruthenium-106 Ophthalmic applicators." Title page, contents and abstract only, 2003. http://web4.library.adelaide.edu.au/theses/09SM/09smt1363.pdf.

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"August 2003" Bibliography: leaves 108-117. 1. Ruthenium-106 ophthalmic applicators -- 2. General principle of thermoluminescent dosimeter -- 3. Study of basic characteristics of CaSO4:Dy TLD -- 4. Measurements of COB and CCA type ruthenium-106 ophthalmic applicator dose distributions -- 5. Determination of the dose rate distribution using a MOSFET detector -- 6. Summary and conclusion. In this project, small CaSO4:Dy TLDs and a semiconductor MOSFET dosimeter were used for the determination of on-axis depth dose-rate distributions of 15-mm and 20-mm ruthenium-106 applicators in acrylic eye pha

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Miradji, Faoulat. "Quantum modelling of Ruthenium chemistry in the field of nuclear power plant safety." Thesis, Lille 1, 2016. http://www.theses.fr/2016LIL10192/document.

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Lors d’un Accident Grave (AG) survenant à un réacteur nucléaire à eau pressurisée, sous atmosphère fortement oxydante, des relâchements importants de ruthénium, depuis le combustible dégradé, sont attendus du fait de la formation d’oxydes gazeux. Les composés de Ru représentent un risque sanitaire lié aux isotopes 103Ru et 106Ru, radio-contaminants à court et moyen terme. En outre l’oxyde RuO4, volatil à température ambiante, est susceptible d’être relâché à l’environnement via les fuites de l’enceinte de confinement. L’évaluation de ce rejet à l’environnement présente des incertitudes importa

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Leloire, Maëva. "Utilisation de matériaux poreux de type Metal-Organic Framework (MOF) pour l’adsorption de molécules gazeuses (I2, RuO4) dans le contexte d’un accident de réacteur nucléaire." Electronic Thesis or Diss., Université de Lille (2018-2021), 2021. http://www.theses.fr/2021LILUR009.

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Les isotopes radiotoxiques de l'iode et du ruthénium, tels que 129I, 131I, 103Ru et 106Ru, sont produits en quantité significative durant la fission nucléaire. Après un accident de réacteur nucléaire, ces éléments peuvent être rapidement disséminés dans l’environnement, sous la forme d’espèces gazeuses très volatiles comme l'iode moléculaire (I2) ou le tétraoxyde de ruthénium (RuO4). Afin de limiter la dispersion de ces produits de fission en cas d’accident, des filtres composés de matériaux poreux (zéolites ou charbon actifs) peuvent être employés. Cependant, de tels solides poreux présentent

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Cummins, Veronica Clare. "New and improved hydrogen isotope exchange reactions." Thesis, University of Surrey, 1998. http://epubs.surrey.ac.uk/843371/.

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Compounds labelled with deuterium and tritium are widely used in the life sciences. Consequently there is always a need for improved methods - better incorporation, higher specificity, reduced reaction time etc. and in the case of tritium, less radioactive waste. This thesis is concerned with such aspects. Chapter 1 is a review of the background to tritium and current methods of labelling and analysis of hydrogen isotopes. In chapter 2 the possible use of an organometallic compound - the ruthenium dihydro complex, RuH2CO(PPh3)3, which is known to catalyse the insertion of olefins into the orth

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Pfister, Christian Ulrich. "Radioaktive Markierung eines tumorspezifischen monoklonalen Antikörpers mit Isotopen des Rutheniums /." [S.l.] : [s.n.], 1987. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=8244.

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Bechtoldt, Alexander. "Aerobic Ruthenium-Catalyzed C–H Activations." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2018. http://hdl.handle.net/11858/00-1735-0000-002E-E492-A.

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Gao, Longhui. "C-H bond activation catalyzed by Ruthenium nanoparticles." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS348/document.

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Les molécules marquées par des isotopes de l’hydrogène possèdent de nombreuses applications dans divers domaines tels que la chimie, la biologie ou en science des matériaux. Dans le domaine de la recherche de nouveaux médicaments, les études liées à la pharmacocinétique nécessitent un accès rapide à des molécules marquées afin de ne pas impacter les coûts et les délais de développement. Le développement de la métabolomique a aussi entrainé une augmentation du besoin en molécules marquées isotopiquement. En effet, les molécules deuterées peuvent être utilisées en tant qu’étalons internes pour l

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Kennel, Sybille. "Synthèse de traceurs bimodaux utilisables en imagerie médicale TEP/IRM." Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0190/document.

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Aujourd’hui les médecins disposent de nombreuses techniques d’imagerie médicale afin d’établir des diagnostics précis et précoces. Cependant, chacune de ces techniques possède ses propres avantages et inconvénients. C’est pourquoi, l’utilisation de méthodes bi- ou multi-modales paraît intéressante. Parmi celles-ci, la combinaison TEP/IRM permet d’apporter des informations complémentaires. Il est alors nécessaire d’injecter aux patients un traceur adapté à chacune de ces modalités. Ce travail de thèse a donc consisté à synthétiser des plateformes moléculaires « universelles » utilisables pour l

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Ryberg, Per. "Concerted or Stepwise? : β-Elimination, Nucleophilic Substitution, Copper Catalysed Aziridination and Ruthenium Catalysed Transfer Hydrogenation Studied by Kinetic Isotope Effects and Linear Free-Energy Relationships". Doctoral thesis, Uppsala universitet, Avdelningen för organisk kemi, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-2008.

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This thesis describes the use of kinetic isotope effects, linear free energy relationships and stereochamical studies to distinguish between different mechanistic alternatives and to obtain information about transition state structure. In the first part fluorine and deuterium kinetic isotope effects were determined for the base promoted HF elimination from 4-fluoro-4-(4’-nitrophenyl)butane-2-on. During this work a new method for the determination of fluorine kinetic isotope effects was developed. The results from the study demonstrates that the reaction proceeds via an E1cBip mechanism. In the

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Hajar, Yasmine. "Effect of Electrochemical Promotion and Metal-Support Interaction on Catalytic Performance of Nano-catalysts." Thesis, Université d'Ottawa / University of Ottawa, 2019. http://hdl.handle.net/10393/39701.

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In heterogeneous catalysis, promoting the activity of the catalytic metals is long known as an important method to make a process more efficient and viable. Noble metals have been promoted classically by a chemical coverage of an ionic solution on the surface of the catalyst or using inert support, e.g., silica or alumina, allowing an increase of the dispersion of the catalyst. Therefore, new methods of promotion needed to be better explored to improve the efficiency of metal and metal oxide catalysts. One way of enhancing the catalyst’s activity is to disperse the noble metal at the nanoscale

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Części książek na temat "Ruthenium Isotopes"

Annett, James F. "The BCS theory of superconductivity." In Superconductivity, Superfluids, and Condensates, 127–46. Oxford University PressOxford, 2004. http://dx.doi.org/10.1093/oso/9780198507550.003.0006.

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Abstract In 1957 Bardeen Cooper and Schrieffer (BCS) published the first truly microscopic theory of superconductivity. The theory was soon recognized to be correct in all the essential aspects, and to explain a number of important experimental phenomena. For example, the theory correctly explained the isotope effect: in which the transition temperature changes with the mass of the crystal lattice ions, M. The original BCS theory predicts that the isotope exponent α is 1/2. Most common superconductors agree very well with this prediction, as one can see in Table 6.1. However, it is also clear that there are exceptions to this prediction. Transition metals such as Molybdenum and Osmium (Mo, Os) show a reduced effect, and others such as Ruthenium, Ru, have essentially zero isotope effect.

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Streszczenia konferencji na temat "Ruthenium Isotopes"

Pokhitonov, Yu, V. Romanovski, and P. Rance. "Distribution of Palladium During Spent Fuel Reprocessing." In ASME 2003 9th International Conference on Radioactive Waste Management and Environmental Remediation. ASMEDC, 2003. http://dx.doi.org/10.1115/icem2003-4766.

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The principal purpose of spent fuel reprocessing consists in the recovery of the uranium and plutonium and the separation of fission products so as to allow re-use of fissile and fertile isotopes and facilitate disposal of waste elements. Amongst the fission products present in spent nuclear fuel of Nuclear Power Plants (NPPs,) there are considerable quantities of platinum group metals (PGMs): ruthenium, rhodium and palladium. Given current predictions for nuclear power generation, it is predicted that the quantities of palladium to be accumulated by the middle of this century will be comparab

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Fischer-Gödde, Mario, Carsten Münker, Harry Becker, Wolfgang Maier, Kristoffer Szilas, Carina Gerritzen, Martin Van Kranendonk, and Hugh Smithies. "Ruthenium isotope constraints on the nature of Earth’s late-stage building blocks." In Goldschmidt2021. France: European Association of Geochemistry, 2021. http://dx.doi.org/10.7185/gold2021.4362.

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Fischer-Gödde, Mario, Bo-Magnus Elfers, Alessandro Bragagni, Christian Koeberl, Steven Goderis, Philippe Claeys, François Tissot, et al. "Ruthenium isotope composition of the K-Pg impactor and terrestrial impact structures." In Goldschmidt2023. France: European Association of Geochemistry, 2023. http://dx.doi.org/10.7185/gold2023.18281.

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Fischer-Gödde, Mario, Carsten Münker, Harry Becker, Maier Wolfgang, Martin J. Van Kranendonk, and Hugh Smithies. "Ruthenium Isotopic Evidence for a Missing Late Accretion Component in the Mantle Source of Pilbara Craton." In Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.719.

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