نتایج جستجو برای: nitric acid 65 merck
تعداد نتایج: 920560 فیلتر نتایج به سال:
large reserves of coal in tabas region of iran are characterized by low ash and high caking index, suitable for use in metallurgy as coking coal. however, these coals cannot be gainfully utilized because of their high sulfur content. in this work, studies on desulfurization of tabas coals were carried out in a batch reactor using various reagents. the most effective reagents, fe2(so4)3 , fecl3 ...
The Cover Feature represents acetohydroxamic acid degradation in used nuclear fuel reprocessing cycles, where it is broken down by hydrolysis and radiation aqueous nitric to form acetic acid, hydroxylamine, nitrous oxide, hydrogen gas. Designed Rett Longmore. More information can be found the Research Article Jacy K. Conrad, Gregory P. Horne co-workers.
The rate of hydrolysis of trans -[Cr(NH ) F ] was obtained as a function of acid concentsation in perchloric, sulfuric and nitric acid at 3Q°C. The results have been analyzed by the treatment of Bunnett and Olsen. Values of the parameter ?in Olsen equation are consistent with the participation of water as a proton-wansfer agent in the rate-determining step. The Arrhenius plot for perchlori...
background: this research studied the feasibility of a simple method for extracting gold from central processing units (cpus) of computer circuit boards without solvent. methods: ceramic and composite cpus of computer circuit boards were used. gold was extracted using a hydrometallurgical method in six stages: grinding of cpus, leaching in nitric acid, leaching in aqua regia, removing the exces...
The new england journal of medicine 2875 correspondence Rofecoxib, Merck, and the FDA to the editor: Merck has been proactive and conscientious in evaluating the cardiovascular profile of rofecoxib (Vioxx); Dr. Topol's remarks to the contrary in his Perspective article (Oct. 21 issue) 1 are false. First, his description of the time line obfus-cates the facts. The Food and Drug Administration (F...
H. Tang, C. H. Chang, D. Suresch, L. A. Mcnamara, C. Tong, B. Misselwitz, D. Zhou, B. M. Connolly, J. Xu, X. Chen, X. Shen, C. Zhang, E. L. Rickes, M. Mariano, K. Azer, J. Wang, C. Sur, D. S. Williams, M. Klimas, A. S. Plump, R. Hargreaves, and H. Liu Imaging, Merck Research Laboratories, Rahway, NJ, United States, Cadiovascular Disease, Merck Research Laboratories, Rahway, NJ, United States, B...
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