Results 171 to 180 of about 25,146 (204)
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2023
The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements. They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements. They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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Das Atomgewicht des Sauerstoffisotops O18
Zeitschrift f�r Physik, 1930Mit Hilfe einer genauen bandenspektroskopischen Untersuchung der atmospharischen Sauerstoffbanden (sogenannte A- und A′-Gruppe bei λ 7600) gelingt es, unter Zugrundelegung eines Normalgewichts von 16,000 fur O16 das Atomgewicht des Sauerstoffisotops O18 zu 17,991 ± 0,010 zu bestimmen.
R. Mecke, K. Wurm
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Nuclear Physics, 1965
Abstract The low-lying even-parity energy levels of O 18 are calculated within the shell model. Core excitations from the double closed O 16 system have been taken explicitly into account using the SU 3 coupling scheme. The resulting energy spectrum shows nice agreement with experiments for nearly all states below 6 MeV excitation energy.
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Abstract The low-lying even-parity energy levels of O 18 are calculated within the shell model. Core excitations from the double closed O 16 system have been taken explicitly into account using the SU 3 coupling scheme. The resulting energy spectrum shows nice agreement with experiments for nearly all states below 6 MeV excitation energy.
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A study of the reactions O17(He3,α0), O18(He3,α0) and O18(He3,α1)
Nuclear Physics, 1965Abstract The angular distribution of the alpha particles from each of the reactions O 17 ( He 3 , α 0 ) O 16 , O 17 ( He 3 ,α 0 ), O 18 ( He 3 ,α 0 ) and O 18 ( He 3 ,α 1 ) O 17∗ has been measured over an angular range of 0–160° at thirteen values of ...
M.A. Waggoner, A.A. Jaffe
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Lithos, 1968
The positional and thermal parameters of synthetic forms of hydrous beryl and emerald and of anhydrous beryl and emerald were refined by least-squares and difference Fourier methods using 3D data recorded with a counter diffractometer. The mean Be−O and Si−O bond distances determined for the four crystals are statistically identical and measure on the
G.V. Gibbs, D.W. Breck, E.P. Meagher
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The positional and thermal parameters of synthetic forms of hydrous beryl and emerald and of anhydrous beryl and emerald were refined by least-squares and difference Fourier methods using 3D data recorded with a counter diffractometer. The mean Be−O and Si−O bond distances determined for the four crystals are statistically identical and measure on the
G.V. Gibbs, D.W. Breck, E.P. Meagher
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Structure of the O18 antigen from Acinetobacter baumannii
Carbohydrate Research, 1997The polymeric O antigen was obtained from lipopolysaccharide extracted from isolated, defatted cell walls of the reference strain for Acinetobacter baumannii serogroup O18. Monosaccharide analyses and NMR spectra established that the polymer had a regular structure with a repeating unit based on residues of D-galactose (2), N-acetyl-D-galactosamine (1),
S, Haseley, S G, Wilkinson
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Nuclear Physics, 1963
Abstract Differential cross-sections and proton-gamma-ray angular correlation functions in the reaction plane at six different proton angles, have been measured for the O 16 (t, pγ) O 18 reaction through the first excited state (1.98 MeV) of O 18 , using tritons of energy 5 MeV.
F.H. Read, J.M. Calvert
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Abstract Differential cross-sections and proton-gamma-ray angular correlation functions in the reaction plane at six different proton angles, have been measured for the O 16 (t, pγ) O 18 reaction through the first excited state (1.98 MeV) of O 18 , using tritons of energy 5 MeV.
F.H. Read, J.M. Calvert
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The O18-abundance in fresh water
Geochimica et Cosmochimica Acta, 1954Fresh water of various origins as distinct from ocean water shows great variations in O18-abundance. Proceeding from the temperate towards the colder climates a considerable decrease is noticeable. It is demonstrated that the O18-abundance in atmospheric water vapour is dependent on (a) the precipitation temperature, (b) the origin of the vapour and
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Die Energiespektren der Photoprotonen aus C13 und O18
Zeitschrift f�r Physik, 1964The energy spectra of photoprotons from C13 and O18 were investigated with 31,5 MeV bremsstrahlung from the Heidelberg betatron using a CsI(Tl)-spectrometer. The spectra are compared to those of C12 and O16. Yield values and cross sections are given.
R. Kosiek +3 more
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Energy levels of O18 with separable potential
Nuclear Physics, 1965Energy levels of O18 have been calculated for a non-local separable potential using the reaction matrix of Brueckner's theory of the many-body problem. Only 2s12 and 1d52 configurations have been considered. The order of the levels is in agreement with the experimental spectrum.
V.L. Narasimham, S.K. Shah
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