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Railway informationization has the characteristics of "large coverage scope, crossover and associated information, and standard and orderly system", railway information has higher requirements on practical skilled talents, and the higher vocational colleges must completely integrate talent cultivation modes from teaching idea, curricula system, teaching mode and teaching methods. The thesis...
The effect of artificial aging treatment on fatigue crack propagation (FCP) resistance of an Al–Cu–Mg alloy was investigated. It was shown that FCP rate of artificially aged alloy in the Paris region is lower than that of naturally aged alloy before and after thermal exposure. During the thermal exposure, tensile strength of artificially aged alloy remained unchanged. The results of three-dimensional...
When human Bel-7402 hepatocarcinoma cell line grew in a medium containing 10 -4 M dimethyl-4,4 -dimethoxy-5,6,5 ,6 -dimethylenedioxybiphynyl-2,2 -dicarbox ylate (DDB), the secretion of α-fetoprotein (AFP) was significantly lower than the control cells, whereas the albumin (ALB) secretion was markedly higher. The activity of γ-glutamultranspepeidase (γ-GT) in DDB-treated cells markedly...
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