FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W778944874> ?p ?o ?g. }

• W778944874 abstract "NUCL elemental analysis by ion chromatography, inductively coupled plasma-atomic emission spectroscopy, and atomic absorption spectrometry. Major radionuclides, 13 Cs, 90sr, and 238pu could be measured directly by counting techniques. Minor radionuclides such as 99 Tc required separation procedures prior to counting. This work was done under Contract No. DE-AC09-76S1 with the U.S. Department of Energy. AN AUTOMATED FUEL SCANNING SYSTEM*. L. Robinson, F. F. Dyer, R. Hobbs, National Laboratory, Oak Ridge, TN 37831-6128. Oak Ridge In association with the high-enriched uranium (HEU) fuel to low-enriched uranium (LEU) fuel conversion program, an experimental technique has been developed at the Oak Ridge Research Reactor (ORR) which allows the study of the burn-up characteristics of an LEU fuel core. This 30-megawatt pressurized-water reactor will now serve as a source of freshly irradiated LEU fuel for study. and as a working example of the feasibility of the conversion. The fuel cycle at the ORR typically extends from 14 to 21 days. At the end of each cycle, individual fuel elements are analyzed non-destructively using gamma- ray spectroscopy. Due to the high radiation levels associated with each , element. conventional laboratory techniques were inapplicable which necessitated the development of an automated and remotely controlled fuel scanning system. In this talk, the fuel scanning system will be described and information obtained using it regarding the burn- up and power distribution in the ORR's core will be presented. *Research sponsored by Office of Energy Research, U. S. Department of Energy, under contract DE-AC05-840R21400 with Martin Marietta Energy Systems, Inc. TUESDAY MORNING - SECTION A SYMPOSIUM ON THE ORIGIN AND DISTRIBUTION Of THE ELEMENTS. III - GALACTIC EVOLUTION AND STELLAR ABUNDANCES - J, Adouze, Presiding GALACTIC CHEMICAL EVOLUTION: PERSPECTIVES AND PROSPECTS. Virginia Trimble. Dept. of Physics, U. Calif. Irvine CA 92717 & Astronomy Prog. U. Maryland College Park Md, 20742. The first modern, quantitative models of galactic chemical evolution appeared exas:_ tly 20 years ago in the PhD dissertation of the ±ate Beatrice M. Tinsley. Such modelio represent a synthesis of the behavior of the 10 or more stars that form over the 10 year age of a galaxy like our Milky Way and are vital both for understanding how and why galaxies' have the luminosities', colors. and chemical compositions we see now and for in- terpreting observations of distant galaxies to answer cosmological questions about the size, age, density, inhomogeneities, and geometry of the universe. Since my last stat- us report on the subject (1974 Rev. Mod. Phys. 47, 877), some issues have become much clearer (the distinctness of nucleosynthesis in Type I, low mass, supernovae, from that in Type II's that make pulsars; the importance of galaxy mergers and interactions in triggering bursts of star fo!1llation), while others have remained puzzling (the sites of the r and p processes) or newly-surfaced (the nucleosyntheic contributions of pre-galac- tic massive objects; the nature and roll of dark matter in galaxies). The talk will touch briefly on the past, present, and future of galactic evolution studies. THE CHEMICAL EVOLUTION OF THE GALACTIC DISK, Rosemary F. G. Wyse, Astronomy Department, University of California, Berkeley, CA 94720; G. Gilmore, Institute of Astronomy, Cambridge, England, CB3 OF!A. The distribution of enriched material in the stars and gas of our Galaxy contains information pertaining to the chemical evolution of the Milky Way from its formation epoch to the present day, and provides general constraints on theories of galaxy formation. The separate stellar co~ponents of the Galaxy cannot readily be understood if treated in isolation, but a reasonably self-consistent model for Galactic chemical evolution may be found if one considers together the chemical properties of the extreme spheroid, thick disk and thin disk populations of the Galaxy. The three major stellar components of the Galaxy are characterized by their distinct spatial distributions, metallicity structure, and kinematics, with the newly-identified thick disk being approximately three times more massive than the classical metal-poor, non-rotating extreme spheroid. Stellar evolution in the thick disk straightforwardly provides the desired pre-enrichment for resolution of the thin disk G dwarf problem ." @default.
• W778944874 created "2016-06-24" @default.
• W778944874 creator A5033203371 @default.
• W778944874 date "1987-08-30" @default.
• W778944874 modified "2023-09-26" @default.
• W778944874 title "GALACTIC CHEMICAL EVOLUTION - PERSPECTIVES AND PROSPECTS" @default.
• W778944874 hasPublicationYear "1987" @default.
• W778944874 type Work @default.
• W778944874 sameAs 778944874 @default.
• W778944874 citedByCount "0" @default.
• W778944874 crossrefType "journal-article" @default.
• W778944874 hasAuthorship W778944874A5033203371 @default.
• W778944874 hasConcept C116915560 @default.
• W778944874 hasConcept C121332964 @default.
• W778944874 hasConcept C127413603 @default.
• W778944874 hasConcept C13965031 @default.
• W778944874 hasConcept C152568617 @default.
• W778944874 hasConcept C153454851 @default.
• W778944874 hasConcept C158973077 @default.
• W778944874 hasConcept C177322064 @default.
• W778944874 hasConcept C185544564 @default.
• W778944874 hasConcept C185592680 @default.
• W778944874 hasConcept C192562407 @default.
• W778944874 hasConcept C2775907726 @default.
• W778944874 hasConcept C2777930111 @default.
• W778944874 hasConcept C2778260006 @default.
• W778944874 hasConcept C2779154452 @default.
• W778944874 hasConcept C30421969 @default.
• W778944874 hasConcept C39432304 @default.
• W778944874 hasConcept C548081761 @default.
• W778944874 hasConcept C555451288 @default.
• W778944874 hasConcept C7083945 @default.
• W778944874 hasConcept C82706917 @default.
• W778944874 hasConcept C89690796 @default.
• W778944874 hasConcept C95974651 @default.
• W778944874 hasConceptScore W778944874C116915560 @default.
• W778944874 hasConceptScore W778944874C121332964 @default.
• W778944874 hasConceptScore W778944874C127413603 @default.
• W778944874 hasConceptScore W778944874C13965031 @default.
• W778944874 hasConceptScore W778944874C152568617 @default.
• W778944874 hasConceptScore W778944874C153454851 @default.
• W778944874 hasConceptScore W778944874C158973077 @default.
• W778944874 hasConceptScore W778944874C177322064 @default.
• W778944874 hasConceptScore W778944874C185544564 @default.
• W778944874 hasConceptScore W778944874C185592680 @default.
• W778944874 hasConceptScore W778944874C192562407 @default.
• W778944874 hasConceptScore W778944874C2775907726 @default.
• W778944874 hasConceptScore W778944874C2777930111 @default.
• W778944874 hasConceptScore W778944874C2778260006 @default.
• W778944874 hasConceptScore W778944874C2779154452 @default.
• W778944874 hasConceptScore W778944874C30421969 @default.
• W778944874 hasConceptScore W778944874C39432304 @default.
• W778944874 hasConceptScore W778944874C548081761 @default.
• W778944874 hasConceptScore W778944874C555451288 @default.
• W778944874 hasConceptScore W778944874C7083945 @default.
• W778944874 hasConceptScore W778944874C82706917 @default.
• W778944874 hasConceptScore W778944874C89690796 @default.
• W778944874 hasConceptScore W778944874C95974651 @default.
• W778944874 hasLocation W7789448741 @default.
• W778944874 hasOpenAccess W778944874 @default.
• W778944874 hasPrimaryLocation W7789448741 @default.
• W778944874 hasRelatedWork W1497277465 @default.
• W778944874 hasRelatedWork W1574217534 @default.
• W778944874 hasRelatedWork W1593095668 @default.
• W778944874 hasRelatedWork W1622165343 @default.
• W778944874 hasRelatedWork W1625351929 @default.
• W778944874 hasRelatedWork W2004458220 @default.
• W778944874 hasRelatedWork W2028247403 @default.
• W778944874 hasRelatedWork W2072549096 @default.
• W778944874 hasRelatedWork W2084102385 @default.
• W778944874 hasRelatedWork W2118326903 @default.
• W778944874 hasRelatedWork W2964150577 @default.
• W778944874 hasRelatedWork W2995310772 @default.
• W778944874 hasRelatedWork W2999147324 @default.
• W778944874 hasRelatedWork W3005876512 @default.
• W778944874 hasRelatedWork W3021423067 @default.
• W778944874 hasRelatedWork W3046375473 @default.
• W778944874 hasRelatedWork W3105913132 @default.
• W778944874 hasRelatedWork W3106191180 @default.
• W778944874 hasRelatedWork W3121270938 @default.
• W778944874 hasRelatedWork W3123753455 @default.
• W778944874 hasVolume "194" @default.
• W778944874 isParatext "false" @default.
• W778944874 isRetracted "false" @default.
• W778944874 magId "778944874" @default.
• W778944874 workType "article" @default.