نتایج جستجو برای: caesium compounds
تعداد نتایج: 227423 فیلتر نتایج به سال:
With the advance to one scientific name for each fungal species, the generic names in the class Sordariomycetes typified by sexual and asexual morphs are evaluated based on their type species to determine if they compete with each other for use or protection. Recommendations are made for which of the competing generic names should be used based on criteria such as priority, number of potential ...
To understand the effects of radionuclides on non-human biota and the environment, it is essential to study the intake and metabolism of radio-isotopes in earthworms which are among the most important soil organisms, and Eisenia fetida, which were used in this study, are known to be sufficiently sensitive to chemicals and representative of common earthworms. In this study, we assessed the conce...
Recent years have seen increasing interest in the potential for using caesium-137 as a tracer in soil erosion investigations and caesium-137 measurements are now accepted as an effective and valuable means of producing retrospective information on medium-term rates and patterns of soil redistribution. There are, however, two important limitations to the general application of the approach. Thes...
The inhibitory effect of various oral doses of different hexacyanoferrate(II) compounds (HCF) and the influence of the time interval of HCF-administration on intestinal 134Cs-absorption was studied in rats. Optimum inhibition was obtained by administration of HCF together with or 2 min before oral 134Cs loading. Using appropriate low amounts (0.1-0.5 mg) of the different HCF compounds, the inhi...
چکیده ندارد.
Single crystals of caesium tantalate(V), Cs(10)Ta(29.27)O(78), were obtained as a serendipitous product in a welded tantalum ampoule by a blank reaction of CsBr and bis-muth subnitrate [Bi(5)O(OH)(9)(NO(3))(4)] with the container material. The crystal structure of the title compound is made up of a three-dimensional framework constituted by two types of layers, viz. (Ta(6)O(15))(n) and (Ta(3)O(...
X-Ray scattering measurements of 2.78 and 5.56 molal aqueous solutions of caesium iodide and 2.78 and 6.05 molal lithium iodide were carried out at 293 and 343 K Differences in the radial distribution functions (DRDFs) have been obtained between the caesium iodide and lithium iodide solutions of similar composition, the latter being taken as a reference for the data analysis of the former. The ...
Since several days, radioactive pollution was observed in the marine environment, at varying distances from the Fukushima-Daiichi power station. The main radionuclides regularly found in the sea water are (T = radioactive half-life): iodine 131 (T = 8 days), caesium 137 (T = 30 years), caesium 134 (T = 2.1 years), caesium 136 (T = 13.1 days), tellurium 132 / iodine 132 (T = 78 hours). Others ha...
2-Amino-3-acylthiophenes are known to allosterically modulate the A(1) adenosine receptor and are also used as intermediates in the synthesis of therapeutic agents and pharmacophores such as thienoazepines and thienopyrimidines. The N-alkylation of 2-aminothiophenes has been notoriously difficult to accomplish under mild conditions and there are very few examples of N-alkylated 2-aminothiophene...
Caesium chromium(III) diarsenate(V), CsCrAs2O7, was prepared by solid-state reactions. The title structure consists of isolated CrO6 octa-hedra and As2O7 diarsenate groups, sharing corners to build up a three-dimensional [CrAs2O7](-) anionic framework. In this framework, channels extending parallel to [001] are present in which the ten-coordinate Cs(+) ions reside. CsCrAs2O7 is isotypic with th...
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