نتایج جستجو برای: beryllium
تعداد نتایج: 2590 فیلتر نتایج به سال:
We analyzed sputtering erosion and tritium codeposition for the ITER vertical target divertor design using erosion and plasma codes ( W B C / R E D E P / D E G A S + ) coupled to available materials data. Computations were made for a beryllium, carbon, and tungsten coated divertor plate, and for three edge plasma regimes. New data on tritium codeposition in beryllium was obtained with the triti...
A cloud-point extraction process using a mixed micelle of the cationic surfactant cetyl pyridinium chloride (CPC) and non-ionic surfactant Triton X-114 to extract beryllium from aqueous solutions was investigated. The method is based on the color reaction of beryllium with Chrome Azurol S (CAS) in acetate buffer and the mixed micelle-mediated extraction of the complex. This complex was concentr...
A method using accelerator mass spectrometry (AMS) has been developed for quantifying attomoles of beryllium (Be) in biological samples. This method provides the sensitivity to trace Be in biological samples at very low doses with the purpose of identifying the molecular targets involved in chronic beryllium disease. Proof of the method was tested by administering 0.001, 0.05, 0.5, and 5.0 micr...
There is no experimental proof documented in the literature for the existence of any beryllium peroxide compound. All recent pertinent preparative attempts described in this work, using a range of beryllium salts with various peroxides as reagents under mild conditions, were equally unsuccessful. (1)H and (9)Be NMR investigations of aqueous solutions containing beryllium salts and hydrogen pero...
Beryllium Disease to Beryllium Sensitization and Chronic Influence of MHC CLASS II in Susceptibility
Using computer simulation, the sputtering coefficients of a beryllium target upon bombardment with hydrogen isotopes in particle energy range 8 eV-100 keV and dependences on angle incidence beam are obtained. Obtained results allow to estimate ITER first wall entry impurities into hot plasma zone. Formulas proposed for estimating threshold describing coefficient dependence beam. Keywords: Sputt...
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