The QPQ (Quench-Polish-Quench) complex salt bath treatment of 35 steel was carried out,the phase and microstructure were analyzed by X-ray and OM respectively,meanwhile,the microhardness,polarization curves and slide wear resistance of 35 steel before and after QPQ treatment were also tested.

To observe and analyze the phase transformations characteristics of 35 steel during cooling after continuous heating with dilatate method and metallography microscope.

In seawater and fresh water,the performance of ingot and 35 steel was measured by constant current experiment,and then their anodic polarization curves were drawn.

Oxidation behavior of Al-Ti and Cr-Ti diffusion-alloying coatings on the 35 carbon steel at elevated temperature;

This paper, based on introducing the technology characteristic of making cold hardened steel bar represented by ML35 and the technology gist of making ML35 in the loop cooling control system, analyses its quality in process of production, as well as puts forward the countermeasure targeting the problem.

Objective To study the effects of green tea polyphenol(GTP) on the learning and AchE activity of mice with Alzheimer s Disease induced by D-galactose and Aβ_(25～35).

Objective To study the effects of β-amyloid(Aβ_(25～35))on intra-cellular Ca~(2+)-ATPase、free calcium concentration and mitochondria membrane potential on SD rat hippocampus cells,thereby to investigate the mechanism of neurotoxicity of Aβ_(25～35).