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Bordallo, M.A.N.; Fridman, J.; Netto, M.; Rio de Janeiro Univ.
Proceedings of the 16. Brazilian Congress of Endocrinology and Metabology1984
Proceedings of the 16. Brazilian Congress of Endocrinology and Metabology1984
AbstractAbstract
No abstract available
Original Title
Contribuicao ao estudo do metabolismo do sodio no hipotireoidismo experimental em ratos
Primary Subject
Source
Comissao Organizadora do 16. Congresso Brasileiro de Endocrinologia e Metabologia; 236 p; 1984; p. 99; 16. Brazilian Congress of Endocrinology and Metabology; Canela, RS (Brazil); 27-31 Oct 1984; Published in summary form only.
Record Type
Miscellaneous
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Conference
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AbstractAbstract
[en] A new preparation of a 22Na positron source is described. The source is entirely of glass, shock-proff enough for usual purposes and easy to handle. These advantages are combined with high 22Na diffusion yields and low source corrections. (orig.)
Primary Subject
Record Type
Journal Article
Journal
Nuclear Instruments and Methods; ISSN 0029-554X;
; v. 174(1/2); p. 317-320

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AbstractAbstract
[en] The radionuclide 22Na is a potential astronomical observable that is expected to be produced in classical novae in quantities that depend on the thermonuclear rate of the 22Na(p,γ)23Mg reaction. We have measured the strengths of low-energy 22Na(p,γ)23Mg resonances directly and absolutely using a radioactive 22Na target. We find the strengths of resonances at Ep=213, 288, 454, and 610 keV to be higher than previous measurements by factors of 2.4-3.2, and we exclude important contributions to the rate from proposed resonances at Ep=198, 209, and 232 keV. The 22Na abundances expected in the ejecta of classical novae are reduced by a factor of ≅2.
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Secondary Subject
Source
(c) 2010 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Country of publication
ABUNDANCE, ALKALINE EARTH ISOTOPES, BARYON REACTIONS, BETA DECAY RADIOISOTOPES, BETA-PLUS DECAY RADIOISOTOPES, BINARY STARS, BOSONS, CHARGED-PARTICLE REACTIONS, COSMIC RADIATION, ELEMENTARY PARTICLES, ENERGY RANGE, ERUPTIVE VARIABLE STARS, EVEN-ODD NUCLEI, HADRON REACTIONS, IONIZING RADIATIONS, ISOMERIC TRANSITION ISOTOPES, ISOTOPES, LIGHT NUCLEI, MAGNESIUM ISOTOPES, MASSLESS PARTICLES, NANOSECONDS LIVING RADIOISOTOPES, NUCLEAR REACTIONS, NUCLEI, NUCLEON REACTIONS, ODD-ODD NUCLEI, PHOTONS, PHYSICS, RADIATIONS, RADIOISOTOPES, SECONDS LIVING RADIOISOTOPES, SODIUM ISOTOPES, STARS, TARGETS, VARIABLE STARS, YEARS LIVING RADIOISOTOPES
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AbstractAbstract
No abstract available
Original Title
40-46 MeV, differential cross sections, J, π
Primary Subject
Record Type
Journal Article
Journal
Phys. Rev., C; v. 9(4); p. 1258-1272
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Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Frey, S.; Kuells, C.; Schlosser, C.
International Symposium on Isotopes in Hydrology, Marine Ecosystems, and Climate Change Studies. Presentations2011
International Symposium on Isotopes in Hydrology, Marine Ecosystems, and Climate Change Studies. Presentations2011
AbstractAbstract
No abstract available
Primary Subject
Secondary Subject
Source
International Atomic Energy Agency, Isotope Hydrology Section, Vienna (Austria); vp; 2011; 13 p; International Symposium on Isotopes in Hydrology, Marine Ecosystems, and Climate Change Studies; Monaco (Monaco); 27 Mar - 1 Apr 2011; IAEA-CN--186/045; Also available on-line: http://www-naweb.iaea.org/napc/ih/documents/other/045%20FREY%20(Presentation).pdf; PowerPoint presentation
Record Type
Report
Literature Type
Conference
Report Number
Country of publication
ALKALINE EARTH ISOTOPES, BERYLLIUM ISOTOPES, BETA DECAY RADIOISOTOPES, BETA-PLUS DECAY RADIOISOTOPES, DAYS LIVING RADIOISOTOPES, ELECTRON CAPTURE RADIOISOTOPES, EVEN-ODD NUCLEI, ISOMERIC TRANSITION ISOTOPES, ISOTOPES, LIGHT NUCLEI, NANOSECONDS LIVING RADIOISOTOPES, NUCLEI, ODD-ODD NUCLEI, RADIOISOTOPES, SODIUM ISOTOPES, YEARS LIVING RADIOISOTOPES
Reference NumberReference Number
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Rundberg, R.; Elgart, M.F.; Finston, H.L.; Williams, E.T.; Bond, A.H. Jr.
Nuclear cross sections and technology. Vol. I and II1975
Nuclear cross sections and technology. Vol. I and II1975
AbstractAbstract
[en] A simple method is described for determining the neutron absorption cross sections for radionuclides produced and consumed in a reactor-neutron flux. Data were obtained for 22Na which, through application of Westcott's procedure, yielded the following: sigma0 = 51.1 +- 3.1 Kbarns, s0 = 2.3 +- 0.1, and Σ' = 100 +- 10 Kbarns
Original Title
Westcott procedure
Primary Subject
Secondary Subject
Source
Schrack, R.A.; Bowman, C.D. (eds.); p. 792-794; Oct 1975; National Bureau of Standards; Washington, DC; Conference on nuclear cross sections and technology; Washington, DC, USA; 3 Mar 1975
Record Type
Book
Literature Type
Conference
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Zinkyavichyus, P.K.; Luyanas, V.Yu.; Jotsyus, V.K.
Chemical and radioactive pollution of the atmosphere and hydrosphere. V. 41978
Chemical and radioactive pollution of the atmosphere and hydrosphere. V. 41978
AbstractAbstract
[en] Synoptical conditions of the origin of the cosmogenic 7Be and 22Na extremal concentrations in the surface air of Vilnus were investigated. The increased 7Be concentrations resulted from high-altitude valley formation in the western direction from the sampling point for 60% of all the cases and 74% of thases were related to the wind velocities exceeding 30 m/s at a height of 300 mb. The analysis of synoptical conditions in the surface layer has shown that the concentration increase occurred most often in the rear of a cyclone or at the eastern circumference of an anticyclone (30 per cent of the cases) and in the central part of an anticyclone (21 per cent of the cases)
Original Title
K voprosu o vozniknovenii ehkstremal'nykh kontsentratsij kosmogennykh radioizotopov v prizemnom vozdukhe
Primary Subject
Source
Styro, B.I. (ed.); AN Litovskoj SSR, Vilnyus. Inst. Fiziki i Matematiki; p. 69-72; 1978; p. 69-72; Mokslas; Vil'nyus; 4 refs.; 2 figs.
Record Type
Book
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
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AbstractAbstract
[en] In this study, a gamma-gamma coincidence spectrometry was developed and examined for environmental low-level cosmogenic 22Na monitoring purposes. The spectrometry consists of two bismuth germanate scintillators (BGO) and XIA LLC Digital Gamma Finder (DGF)/Pixie-4 software and card package. The developed spectrometry was optimized according to the considerations of output count rate and gamma peak energy resolution. This spectrometry provides a more sensitive and effective way to quantify even trace amounts of 22Na with critical detection limit of 9 mBq. A sophisticated computer simulation was also created with the goal of obtaining a better understanding of the experimental results and gamma-gamma coincidence efficiencies at different sample geometries. (author)
Primary Subject
Secondary Subject
Source
7 refs.
Record Type
Journal Article
Journal
Journal of Radioanalytical and Nuclear Chemistry; ISSN 0236-5731;
; CODEN JRNCDM; v. 287(2); p. 551-555

Country of publication
BETA DECAY RADIOISOTOPES, BETA-PLUS DECAY RADIOISOTOPES, BISMUTH COMPOUNDS, COINCIDENCE METHODS, COUNTING TECHNIQUES, GERMANATES, GERMANIUM COMPOUNDS, ISOMERIC TRANSITION ISOTOPES, ISOTOPES, LIGHT NUCLEI, NANOSECONDS LIVING RADIOISOTOPES, NUCLEI, ODD-ODD NUCLEI, OXYGEN COMPOUNDS, RADIOISOTOPES, SODIUM ISOTOPES, YEARS LIVING RADIOISOTOPES
Reference NumberReference Number
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AbstractAbstract
No abstract available
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Record Type
Journal Article
Journal
Phys. Rev., C; v. 6(6); p. 2148-2152
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AbstractAbstract
[en] A new positron accumulation scheme compatible with ultrahigh vacuum conditions has been developed, which is realized by preparing a high density electron plasma as high as ≅1011 cm-3 and an ion cloud as energy absorbers. The present accumulation rate normalized by the intensity of Na22 positron source is (3.6±0.3)x102e+/s/mCi, which is more than one and a half orders of magnitude higher than other ultrahigh vacuum compatible schemes so far reported
Primary Subject
Source
(c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Country of publication
ANTILEPTONS, ANTIMATTER, ANTIPARTICLES, BETA DECAY RADIOISOTOPES, BETA-PLUS DECAY RADIOISOTOPES, ELEMENTARY PARTICLES, FERMIONS, ISOMERIC TRANSITION ISOTOPES, ISOTOPES, LEPTONS, LIGHT NUCLEI, MATTER, NANOSECONDS LIVING RADIOISOTOPES, NUCLEI, ODD-ODD NUCLEI, PARTICLE SOURCES, RADIATION SOURCES, RADIOISOTOPES, SODIUM ISOTOPES, YEARS LIVING RADIOISOTOPES
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