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South University, Changsha 410083, China) Abstract: 8 bacterial strains and 1 fungus strain were isolated from steeping fluid of the erosive bamboo slips using bacterial and fungal medium, and the bamboo... in the storing period. Based on the cultural, morphological characteristics of the strains, and sequence analysis of the nucleic acids (parts sequence of 16SrDNA of the bacterial strains and 18SrDNA and ITS......
. Macro-texture was measured by X-ray diffraction. It is found that a high density of fine dispersoids enhances the development of the copper and S textures at large strains (~3), and also induces a higher fraction of high-angle grain boundaries. At smaller strains, the texture and high-angle grain boundaries are not evidently influenced by the density of dispersoids. It is suggested that the texture......
Acidithiobacillus ferrooxidans strains WU Xue-ling, FAN Hong-wei, DUAN Hong, ZHANG Zhen-zhen, LIU Li-li, LIU Xin-xing (School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China) Abstract: To study the genome diversity of 20 Acidithiobacillus ferrooxidans strains in China, and the relationship between the genome classification and physiological-biochemical......
939.97 文献标识码:A Isolation of Acidithiobacillus ferrooxidans strains and effect of anions on their ferrous ions oxidation capacities WU Xue-ling, JIANG Ying, QIU... strains were isolated from the samples of acid mine drainage taken from Dexing Copper Mine in Jiangxi province, Daye Copper Mine in Hubei province and Dachang Copper Mine in Guangxi province......
appropriate for process modeling. The processing maps for the superalloy were constructed for strains of 0.2,0.4,0.6,and 0.8 on the basis of the dynamic material model,and a total processing map that includes all the investigated strains was proposed. Metallurgical instabilities in the instability domain mainly located at higher strain rates manifested as adiabatic shear bands and cracking......
additions due to grain refinement and solid solution strengthening,and the compressive fracture strains of Cu–11.9Al–3.8Ni–0.2Gd and Cu–11.9Al–3.8Ni–2.0Fe–0.2Gd were 12.0%and 17.8%,respectively.When the pre-strain was 10%,the reversible strains of 5.4%and 5.9%were obtained for Cu–11.9Al–3.8Ni–0.2Gd and Cu–11.9Al–3.8Ni–2.0Fe–0.2Gd alloys after being heated to 500°C for 1 min,and the obvious two-way......
peak stress at temperatures lower than 1150°C and strain rates higher than 0.01 s-1.Processing maps at true strains of 0.1–0.9 were developed using the dynamic materials model and experimental flow... in comparison with solution-treated alloy.Furthermore,aging treatment eliminated the instability region of processing maps at true strains of 0.2–0.5.The precipitated phase promoted dynamic recrystallization......
that the creep strains under cyclic loading with a mean stress of 0.4 fcp and an amplitude of 0.2 fcp increase significantly compared with the creep strains under static loading, and the maximum value......
situations. With this model, we investigated the thicknessdependent failure strains of Cu-5 at.% Al films with thickness of 10 nm, 200 nm, 1000 nm, and Ti films with thickness of 50 nm, 100 nm, 300 nm. This model was also employed to study the published data available. The results showed that the new model provided a fairly good prediction of the failure strains of different films.关键词:......
. A fully coupled 3D temperature-displacement analysis was performed to simulate heat transfer, phase transformations, and mechanical stresses and strains during the heating and subsequent quenching......
