A special constant deflection device for TEM has been designed and then the dislocation configuration change ahead of a loaded crack tip after corrosion or anodic dissolution for some time but before the initiation of...A special constant deflection device for TEM has been designed and then the dislocation configuration change ahead of a loaded crack tip after corrosion or anodic dissolution for some time but before the initiation of SCC can be observed in TEM. The results showed that anodic dissolution during SCC of a type 310 stainless steel in deionized water could promote dislocation emission, multiplication and motion before the initiation of SCC.展开更多
A procedure of computing the position of the planar Stewart platfrom with coplanar ground points is presented avoiding the computation of Groebner basis by standard algorithm. The polynomial system resulted is triangu...A procedure of computing the position of the planar Stewart platfrom with coplanar ground points is presented avoiding the computation of Groebner basis by standard algorithm. The polynomial system resulted is triangularized. The number of arithmetic operations needed can be predisely counted.展开更多
Poly[ethyl trifluorobuty-2-noate] (PETFB) was prepared from ethyltrifluorobuty-2-noate by anionic polymerization. The polymer was examined by UV-Vis, IR and NMR spectrometries. It possessed pi-conjugated backbone in t...Poly[ethyl trifluorobuty-2-noate] (PETFB) was prepared from ethyltrifluorobuty-2-noate by anionic polymerization. The polymer was examined by UV-Vis, IR and NMR spectrometries. It possessed pi-conjugated backbone in the main chain. No significant variation in the electrical conductivity of BF3-doped PETFB was observed after more than three months' storage, indicating improved conductive stability in air as compared with polyacetylene.展开更多
文摘A special constant deflection device for TEM has been designed and then the dislocation configuration change ahead of a loaded crack tip after corrosion or anodic dissolution for some time but before the initiation of SCC can be observed in TEM. The results showed that anodic dissolution during SCC of a type 310 stainless steel in deionized water could promote dislocation emission, multiplication and motion before the initiation of SCC.
文摘A procedure of computing the position of the planar Stewart platfrom with coplanar ground points is presented avoiding the computation of Groebner basis by standard algorithm. The polynomial system resulted is triangularized. The number of arithmetic operations needed can be predisely counted.
基金Project supported by the National Natural Science Foundation of China.
文摘Poly[ethyl trifluorobuty-2-noate] (PETFB) was prepared from ethyltrifluorobuty-2-noate by anionic polymerization. The polymer was examined by UV-Vis, IR and NMR spectrometries. It possessed pi-conjugated backbone in the main chain. No significant variation in the electrical conductivity of BF3-doped PETFB was observed after more than three months' storage, indicating improved conductive stability in air as compared with polyacetylene.
