Vapor phase infiltration (VPI) is a post-polymerization modification method for infusing inorganic clusters into polymer to create organic-inorganic hybrid materials with properties that are unique from the parent polymer. The of these can vary amount VPI generated loading. However, relationship between processing conditions and loading still not fully understood. In this paper, effects dose pr...

core-shell 12-tungstophosphoric acid/tio2 (hpw/tio2) nanoparticles at 10 and 20% of hpw have been synthesized by simple in-situ sol- gel method. characterization of the samples was carried out by x-ray diffraction (xrd), scanning electron microscopy (sem), fourier transform infrared (ftir). the x-ray diffraction patterns of as prepared solid samples, indicated characteristic peaks of titania wi...

Membrane distillation (MD) has unique advantages in the treatment of high-salt wastewater because it can make full use low-grade heat sources. The high salinity mine water western mining areas China is rich Ca2+, Mg2+, SO42? and HCO3?. In MD process, inorganic substances feed will cause membrane fouling. At same time, low surface tension organic which could be introduced process irreversible we...

The wet saturated flue gas discharged by coal-fired utility boilers leads to a large amount of low-temperature wasteheat loss. Inorganic ceramic membrane is acid-base resistant and has strong chemical stability. It an ideal material forrecovering waste heat from gas. experiment recovery was carried outwith inorganic as the core, characteristic parameters at tailof boiler were analyzed; taking 3...

Life in oligotrophic environments necessitates quick adaptive responses to a sudden lack of nutrients. Secretion of specific degradative enzymes into the extracellular medium is a means to mobilize the required nutrient from nearby sources. The aquatic bacterium Caulobacter crescentus must often face changes in its environment such as phosphate limitation. Evidence reported in this paper indica...

Environmental issues due to increases in emissions of air pollutants and greenhouse gases are driving the development of clean energy delivery technologies such as fuel cells. Low temperature Proton Exchange Membrane Fuel Cells (PEMFC) use hydrogen as a fuel and their only emission is water. W hile significant advances have been made in recent years, a major limitation of the current technology...

The process parameters of a reverse osmosis system concentrating industrial wastewater in a closed-loop operation have been studied. The model describes system solute concentration as a function of operating time and can be used to predict separation efficiency and permeate flux. The model uses seven parameters that are obtained from membrane and solution data Simulation of a simple salt system...

The aim of the work was to provide tentative criteria for distinguishing between authentic and contaminating activities of plasma membrane preparations from rat liver. To this end, the specific activities and extractabilities were studied of eight activities found in the membrane preparations and in liver microsomes. Liver microsomes were examined since contaminants of the plasma membrane prepa...

Exposure of Ehrlich ascites tumor cells to the polyanion dextran sulfate altered the permeability of the plasma membrane resulting in decreased glycolysis and respiration, enhanced permeability to Rb+ and adenosine 5'-triphosphate, and increased staining by erythrosin B. The inhibition of respiration was reversed by the addition of inorganic phosphate, whereas restoration of glycolysis required...

Candida albicans (C.a) and Candida tropicalis (C.t) were treated with Streptococcus sanguinis bacteriocin (S.s bacteriocin), respectively; the bacteriostatic dynamics of S.s bacteriocin, their effects on cell surface hydrophobicity, leakage of inorganic phosphorus and macromolecular substance, cytosolic calcium concentration, and ultrastructure changes of Candida thallus were detected and analy...