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Our research focused on the Characteristics of HPAM degradation, using 11 hydrolyzed polyacrylamide degrading bacteria strains that were gained from Daqing field. In this study, we demonstrated that the degradation capability of the mixed strains was stronger than each single one. In addition, Infrared spectrum analysis and Gas Chromatography analysis on HPAM degradation products showed that, parts...
Polyurethanes with pedant quaternary ammonium salts (QAS) have been shown potent antimicrobial properties against gram-positive bacteria but less sensitive to gram-negative ones. Besides, due to using a large amount of QAS chain extenders, Polyurethanes with pedant QAS have been proven to be high water adsorption and even water soluble. In order to solve the two problems mentioned above, Novel polyurethanes...
We report here for the first time the combination of microfabricated gas chromatography (GC) columns with pneumatic modulation to achieve high-speed comprehensive two-dimensional gas chromatography (GCxGC) using microfabricated components. The GCxGC system is in turn combined with nanoelectromechanical (NEMS) resonator mass sensors that have been coated with a chemically-selective polymer to enhance...
Deterioration of polymeric dielectrics by partial discharge (PD) might occur at defects in an insulation layer. To elucidate the mechanism of deterioration by PD, measurements were conducted of the gas components produced during deterioration and the substances created on the surface of cross-linked polyethylene (XLPE) samples subjected to PD. Gas component measurements were performed using an experimental...
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