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The Rancimat method was used to evaluate the consumption of antioxidant additive in a natural ester insulating fluid (NEI). NEI samples were aged in the laboratory with and without oxygen bubbling. NEI samples were also collected from a transformer in operation. Samples of NEI (unused, aged in the laboratory and collected from transformer in operation) were analyzed by Fourier-transform infrared spectroscopy...
In present work curing kinetics of UV-initiated cationic photo-polymerization of EPICLON series epoxy resin HP-820 and key cure process parameters, such as the extent of cross-linking and conversion, polymerization rate and the order of reactions have been studied by Photo-Differential Scanning Calorimetry (DPC). Different kinetics analysis results, including enthalpy of the reaction, induction time,...
To improve the expression level of bacteriophage lysin of Streptococcus (PlyC), the growth conditions of the engineering strains, that confirmed by transforming the recombinant plasmids pET-32a(+)-PlyCA and pET-32a(+)-PlyCB (PlyCA and PlyCB are two genes of PlyC) which constructed in our laboratory into E. coli BL21 (DE3) were studied. Some key parameters such as isopropyl-β-D- thiogalactopyranoside...
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