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H. D. Brown H. P. Morris S. K. Chattopadhyay A. B. Patel S. N. Pennington 《Cellular and molecular life sciences : CMLS》1969,25(4):358-359
Zusammenfassung Basierend auf früheren Eiweissuntersuchungen bezüglich einer endoplasmatisch-retikulären Elektronenstromkette ergibt sich: NADPH-Oxydase und Zytochrom-c-Reduktase sind in der normalen Rattenleber wie in der Hepatoma (Typ 7777) tragenden gleich, während die Ferricyanid-Reduktase und P-450 in der Leber der letzteren herabgesetzt waren. 相似文献
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Dibyendu Mondal Md. Masud R. Mollick Biplab Bhowmick Dipanwita Maity Mrinal K. Bain Dipak Ran Asis Mukhopadhyay Kausik Dan Dipankar Chattopadhyay 《自然科学进展(英文版)》2013,23(6):579-587
Nanocomposites of poly(vinyl alcohol)(PVA),poly(vinyl pyrrolidone)(PVP) and sodium montmorillonite(Na~+MMT) were prepared by solution mixing and then cast into films.X-ray diffraction analysis and images of transmission electron microscopy establish the formation of PVA/Na~+MMT intercalated nanocomposite.Exfoliated and highly intercalated PVA/PVP/Na~+MMT nanocomposite formed in the presence of PVP.Inclusion of PVP in PVA/Na~+MMT matrix enhances the hydrogen bonding interactions between PVA and Na~+MMT and thus increases the mechanical properties and thermal stability of PVA/PVP/Na~+MMT nanocomposites compared to PVA/Na~+MMT nanocomposite.The interactions between PVA,PVP and Na~+MMT were established by the Fourier transform infrared spectroscopy.The moisture absorption tendency of both the PVA and PVA/PVP films reduced after the incorporation of Na~+MMT at 75%constant relative humidity.Differential scanning calorimetry studies show that the presence of PVP and Na~+MMT both are responsible for reducing the heat of fusion,and crystallinity of PVA.The flow behavior of the PVA,PVA/PVP and its nanocomposite solutions has been also studied.Water vapor permeability of PVA/PVP/Na~+MMT composite films decreased in the presence of nanoclay due to increasing tortuous paths for diffusion. 相似文献
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Enhancement of the nickel converter slag-cleaning operation with the addition of spent potlining
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The slag cleaning (or matte settling) process was experimentally investigated at 1573 K using a fayalitic nickel converter slag containing spinel and matte/alloy particles. The addition of various amounts of spent potlining (SPL) was studied in terms of its influence on matte settling and the overall metal recoveries. The slags produced were characterized by scanning electron microscopy, energy-dispersive spectroscopy, and wet chemical analysis using inductively coupled plasma optical emission spectrometry. The presence of solid spinel particles in the molten slag hindered coalescence and settling of matte/alloy droplets. Matte settling was effectively promoted with the addition of as little as 2wt% SPL because of the reduction of spinel by the carbonaceous component of the SPL. The reduced viscosity of the molten slag in the presence of SPL also contributed to the accelerated matte settling. Greater metal recoveries were achieved with larger amounts of added SPL. Fast reduction of the molten slag at 1573 K promoted the formation of highly dispersed metal particles/clusters via accelerated nucleation in the molten slag, which increased the overall slag viscosity. This increase in viscosity, when combined with rapid gas evolution from accelerated reduction reactions, led to slag foaming. 相似文献
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H. D. Brown S. K. Chattopadhyay A. Patel R. H. Rigdon 《Cellular and molecular life sciences : CMLS》1967,23(7):522-524
Zusammenfassung Skelettmuskelmembrane und Erythrozytenstromata normaler Enten zeigen eine adenosine triphosphatase Aktivität, die durch das herzaktive Glykosid Ouabain gehemmt wird. Das gleiche Material von Enten mit Myopathien zeigte eine durch Ouabain stimulierte ATPase-Aktivität. 相似文献
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S. N. Pennington H. D. Brown S. Chattopadhyay C. Conaway H. P. Morris 《Cellular and molecular life sciences : CMLS》1970,26(2):139-140
Zusammenfassung Die in vitro Stimulation der Adenyl-Cyclase durch Epinephrin zur Bildung der zyklischen AMP ist im Hepatomgewebe signifikant höher als in der normalen Rattenleber. Sodiumfluorid hemmt in beiden Fällen die Stimulation. 相似文献
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S. Ghosal S. Banerjee B. K. Chattopadhyay R. S. Srivastava D. K. Chakrabarti 《Cellular and molecular life sciences : CMLS》1978,34(8):1057-1058
Summary Exudates and extractives of roots ofRuellia tuberosa, containing 2,6-dimethoxyquinone, acacetin and a C16-quinone, have been shown to produce significant protective and curative actions againstFusarium oxysporum-incited wilt of safflower. The potentiality of the root extractives as a foliar fungicide is appraised. 相似文献
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