The influence of compression and decompression rates of carbon dioxide on the physiology of Absidia coerufea and Saccharomyces cerevisiae was investigated. Besides parameters such as pressure, temperature, exposure ti...The influence of compression and decompression rates of carbon dioxide on the physiology of Absidia coerufea and Saccharomyces cerevisiae was investigated. Besides parameters such as pressure, temperature, exposure time, water content, and initial pH, the influence of either compression or decompression rate on the biological behavior of microorganisms was quite essential. For both microorganisms studied, an optimal rate for either compression or decompression process exists due to the integrated effect of pressure, exposure time as well as compression or decompression speed. The decompression rate has no significant effect on cell's viability after 180 min exposure in compressed CO_2 because almost all the microorganisms were died before decompression.展开更多
Using gcomctrical optimization and DFT mcthod at thc B3LYP/6-311＋＋G （3dt,3pd） level, four equilibrium geometries and one transition state of GeHeLiCl were identified, and the structures at the MP2/6-311＋3G（3df,...Using gcomctrical optimization and DFT mcthod at thc B3LYP/6-311＋＋G （3dt,3pd） level, four equilibrium geometries and one transition state of GeHeLiCl were identified, and the structures at the MP2/6-311＋3G（3df,3pd） level were calculated simultaneously. We also sludied the solvent effects on the structures of Germylenoid GeH,LiCl at the B3LYP/6-311＋＋G （3dt,3pd） level. The two more stable forms are suggested to be the p-complex and three-membered ring. The vibrational frequencies and infrared intensities were computed at the B3LYP/6-311＋＋G （3df,3pd） level.展开更多
The terpolymer of itaconic acid, acrylamide and 2-acrylamido-2-methyl-1-propane sulfonic acid was synthesized through the free-radical polymerization. The IR spectra confirmed that there was no olefinic band, while th...The terpolymer of itaconic acid, acrylamide and 2-acrylamido-2-methyl-1-propane sulfonic acid was synthesized through the free-radical polymerization. The IR spectra confirmed that there was no olefinic band, while the TGA results revealed that the terpolymer was of high thermal stability.展开更多
LCAC-SW method has been extended to study the reaction dynamics for ion-pair formation processes. M+ X2→Mt + X2 reaction system involves two potential energy surfaces, i.e., the covalence state (M + X2) and the ionic...LCAC-SW method has been extended to study the reaction dynamics for ion-pair formation processes. M+ X2→Mt + X2 reaction system involves two potential energy surfaces, i.e., the covalence state (M + X2) and the ionic state (M + X2) and their crossing effect. The working equations for calculating state-to-state probability have been derived based on the above two-state model, Satisfied results d collinear state-to-state probabilities for K+ I2 → K+ + I2 ion-pair formation system have been obtained.展开更多
基金Supported by the National Natural Science Foundation of China (No.20476076).
文摘The influence of compression and decompression rates of carbon dioxide on the physiology of Absidia coerufea and Saccharomyces cerevisiae was investigated. Besides parameters such as pressure, temperature, exposure time, water content, and initial pH, the influence of either compression or decompression rate on the biological behavior of microorganisms was quite essential. For both microorganisms studied, an optimal rate for either compression or decompression process exists due to the integrated effect of pressure, exposure time as well as compression or decompression speed. The decompression rate has no significant effect on cell's viability after 180 min exposure in compressed CO_2 because almost all the microorganisms were died before decompression.
基金Supported by the Natural Science Foundation of Shandong Province (No. Y2003B03, Y2006B42) the Doctoral Foundation of Shandong Province (No. 2004BS04011)
文摘Using gcomctrical optimization and DFT mcthod at thc B3LYP/6-311＋＋G （3dt,3pd） level, four equilibrium geometries and one transition state of GeHeLiCl were identified, and the structures at the MP2/6-311＋3G（3df,3pd） level were calculated simultaneously. We also sludied the solvent effects on the structures of Germylenoid GeH,LiCl at the B3LYP/6-311＋＋G （3dt,3pd） level. The two more stable forms are suggested to be the p-complex and three-membered ring. The vibrational frequencies and infrared intensities were computed at the B3LYP/6-311＋＋G （3df,3pd） level.
文摘The terpolymer of itaconic acid, acrylamide and 2-acrylamido-2-methyl-1-propane sulfonic acid was synthesized through the free-radical polymerization. The IR spectra confirmed that there was no olefinic band, while the TGA results revealed that the terpolymer was of high thermal stability.
基金Project supported by the National Natural Science Foundation of China (No.29673026)the Ph. Doctoral Foundation of the State Education Committee of China.
文摘LCAC-SW method has been extended to study the reaction dynamics for ion-pair formation processes. M+ X2→Mt + X2 reaction system involves two potential energy surfaces, i.e., the covalence state (M + X2) and the ionic state (M + X2) and their crossing effect. The working equations for calculating state-to-state probability have been derived based on the above two-state model, Satisfied results d collinear state-to-state probabilities for K+ I2 → K+ + I2 ion-pair formation system have been obtained.
