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121.
Alpha-particle spectroscopic strengths extracted from 21Ne(6Li, d) angular distributions agree in both magnitude and multipolarity with predicted strengths. Secondly, strengths calculated using eigenfunctions determined in large shell-model computations are remarkably consistent with pure SU3 symmetry limit results. 相似文献
122.
N. Anantaraman H.E. Gove R.A. Lindgren J. Tōke J.P. Trentelman J.P. Draayer F.C. Jundt G. Guillaume 《Nuclear Physics A》1979,313(3):445-466
The 16O(6Li, d)20Ne reaction has been studied at bombarding energies of 20, 32 and 38 MeV. The α-particle spectroscopic strengths have been extracted for levels up to 12.15 MeV in excitation. Nondirect processes appear to contribute significantly to all levels at 20 MeV and to high spin levels (6+ and 8+) at 32 MeV. Strengths extracted for members of the ground state band assuming (sd)4 transfer are unequal at both 32 and 38 MeV, in marked contrast to theoretical predictions. To explain this, particle-hole correlations in 16O(g.s.), inelastic channel coupling in the reaction and perhaps other effects as well, have to be considered. Strengths extracted for members of excited bands and α-decay reduced widths compare poorly with each other and with simple SU(3) predictions. 相似文献
123.
Résumé Donner un point de vue pour construire l'analyse générale, et traiter, comme exemple, les fonctions d'ensemble systématiquement. 相似文献
124.
Ishida Yōichi Yamamoto Mitzuyoshi Takayanagi Motowo 《Colloid and polymer science》1960,168(2):124-128
Colloid and Polymer Science - The ?′ and ?″ for polyvinylidene chloride investigated were measured at frequencies from 100 c/s to 2 M c/s, at various fixed temperatures from... 相似文献
125.
126.
Two types of oxygenative oxidations (Nucleophilic and Electrophilic Oxidations) of sulfur atom are proposed and a typical mode of nucleophilic oxidation is shown with a few unsymmetrical thiolsulfinates. 相似文献
127.
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129.
A method for the separation and identification of inorganic and methylated arsenic compounds in marine organisms was constructed by using a hydride generation/cold trap/gas chromatography mass spectrometry (HG/CT/GC MS) measurement system. The chemical form of arsenic compounds in marine organisms was examined by the HG/CT/GC MS system after alkaline digestion. It was observed that trimethylarsenic compounds were distributed mainly in the water-soluble fraction of muscle of carnivorous gastropods, crustaceans and fish. Also, dimethylated arsenic compounds were distributed in the water-soluble fraction of Phaeophyceae. It is thought that most of the trimethylated arsenic is likely to be arsenobetaine since this compound released trimethylarsine by alkaline digestion and subsequent reduction with sodium borohydride. The major arsenic compound isolated from the water-soluble fraction in the muscle and liver of sharks was identified as arsenobetaine from IR, FAB Ms data, NMR spectra and TLC behaviour. The acute toxicity of arsenobetaine was studied in male mice. The LD50 value was higher than 10 g kg−1. This compound was found in urine in the non-metabolized form. No particular toxic symptoms were observed following administration. These results suggest that arsenobetaine has low toxicity and is not metabolized in mice. The LD50 values of other minor arsenicals in marine organisms, trimethylarsine oxide, arsenocholine and tetramethylarsonium salt, were also examined in mice. 相似文献
130.
Kenzo Ohkita Hideo Kurosawa Toshikazu Hirao Isao Ikeda 《Journal of organometallic chemistry》1994,470(1-2):189-190
Relative stability in coordination of substituted styrene derivatives to [Ru(η-C5H5)(dtpe)]+ (dtpe = 1,2-bis(di-p-tolylphosphino)-ethane) was determined by NMR spectroscopy to reveal unusually weak substituent dependency of the stability. 相似文献