نتایج جستجو برای: cr v phillips catalyst
تعداد نتایج: 391550 فیلتر نتایج به سال:
Oxidation of cyclooctene was studied in presence aqueous hydrogen peroxide (30%, v/v) over nano iron oxide. The catalyst prepared by microemulsion method and characterized using various techniques including XRD, TEM and BET techniques for evaluating phase, structure and morphology and surface area. In this study, we investigated the effects of varying the catalyst content, reaction temperature,...
Here we reported the investigation of enhanced performance for the removal of hexavalent chromium (Cr (VI)) by a new microbial fuel cell (MFC) with natural pyrrhotite-coated cathode. By comparisons of the graphite-cathode, the MFCs equipped with a pyrrhotite-coated cathode generated the maximum power density of 45.4 mW·m−2 that was 1.3 times higher than that of with bare graphite cathode (35.5 ...
PURPOSE To compare efficacy and safety of bortezomib plus dexamethasone and vincristine plus doxorubicin plus dexamethasone (VAD) as induction before stem-cell transplantation in previously untreated myeloma. PATIENTS AND METHODS Four hundred eighty-two patients were randomly assigned to VAD (n = 121), VAD plus dexamethasone, cyclophosphamide, etoposide, and cisplatin (DCEP) consolidation (n ...
Single-atom catalysts (SACs) have aroused significant interest in heterogeneous catalysis recent years because of their high catalytic selectivity and tunable activity various chemical reactions. Herein, non-noble metal SACs with 3d-series single atoms (M1) (M = Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn) supported on MoS2 are computationally screened by using first-principles quantum-chemical theor...
We consider Cauchy problem for Fourier transformation of 3-dimensional Navier-Stokes system with zero external force. Using initial data purposed by Dong Li and Ya.G.Sinai in [1] we implement self-similar regime producing fast growing behavior of the energy of solution while time tends to critical value T cr. Fourier transform of the 3D Navier-Stokes system with purely imaginary initial data ca...
In 1969 M. Gromov in his PhD thesis [G1] greatly generalized Smale-Hirsch-Phillips immersionsubmersion theory (see [Sm],[Hi], [Ph]) by proving what is now called the h-principle for invariant open differential relations over open manifolds. Gromov extracted the original geometric idea of Smale and put it to work in the maximal possible generality. Gromov’s thesis was brought to the West by A. P...
Reduction of chromium(VI) by ascorbate leads to chromium-DNA binding and DNA strand breaks in vitro.
Chromium(VI) is a known human carcinogen which requires intracellular reduction for activation. Ascorbate (vitamin C) has been reported to function as a major reductant of Cr(VI) in animals and cell culture systems. The reaction of Cr(VI) with varying concentrations of ascorbate was studied under physiological conditions in vitro in order to determine the types of reactive intermediates produce...
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