Invited by the CPAFFC, Mayor Arturas Zuokas of Vilnius, capital of Lithuania, led a delegation and visited Beijing, Guangzhou, Shenzhen and Shanghai from July 30 to August 7.It was the first time for the mayor and
In the present work, through the path integral of Gaussian type correlation function, a new formalism based on Fermi-Golden Rule for calculating the rate constant of nonradiative decay process with Duschinsky rotation...In the present work, through the path integral of Gaussian type correlation function, a new formalism based on Fermi-Golden Rule for calculating the rate constant of nonradiative decay process with Duschinsky rotation effect in polyatomic molecules is developed. The advantage of the present path-integral formalism is promoting-mode free. In order to get the rate constant, a "transition rate matrix" needs to be calculated. The rate constant calculated previously is only an approximation of diagonal elements of our "transition rate matrix " . The total rate should be the summation over all the matrix elements.展开更多
When femtosecond （fs） timeresolved experiments are used to study ultrafast processes, quantum beat phenomena are often observed. In this paper, to analyze the fs timeresolved spectra, we will present the density mat...When femtosecond （fs） timeresolved experiments are used to study ultrafast processes, quantum beat phenomena are often observed. In this paper, to analyze the fs timeresolved spectra, we will present the density matrix method, a powerful theoretical technique, which describes the dynamics of population and coherence of the system. How to employ it to study the pumpprobe experiments and fs ultrafast processes is described. The transition of pyrazine is used as an example to demonstrate the application of the density matrix method. Recently, Suzuki＇s group have employed the 22 fs time resolution laser to study the dynamics of the state of pyrazine. In this case, conical intersection is commonly believed to play an important role in this nonadiabatic process. How to treat the effect of conical intersection on nonadiabatic processes and fs timeresolved spectra is presented. Another important ultrafast process, vibrational relaxation, which takes place in subps and ps range and has never been carefully studied, is treated in this paper. The vibrational relaxation in water dimer is chosen to demonstrate the calculation. It should be noted that the vibrational relaxation of （H20）2 has not been experimentally studied but it can be accomplished by the pump-probe experiments.展开更多
Silin and the Wuhan Yangtze River Bridge On October 15, 1957, in the three towns of Wuhan, millions of people rejoiced at the completion and opening to traffic of the Wuhan Yangtze River Bridge-the first bridge over t...Silin and the Wuhan Yangtze River Bridge On October 15, 1957, in the three towns of Wuhan, millions of people rejoiced at the completion and opening to traffic of the Wuhan Yangtze River Bridge-the first bridge over the Yangtze River. Amid the deafening noise of firecrackers, sound of gongs and drums and people’s cheers, the first train sped across the railway deck展开更多
A3-member delegation led by Su Guang, vice president of the CPAFFC and the China-Ukraine Friendship Association (CUFA), paid a goodwill working visit to Kiev, capital of Ukraine, and Yalta from June 20 to 27.
At the invitation of the CPAFFC, a delegation of the Russian Centre of International Scientific and Cultural Cooperation (RCISCC) led by its president V.V. Tereshkova paid a visit to Beijing and Shanghai from May 19 t...At the invitation of the CPAFFC, a delegation of the Russian Centre of International Scientific and Cultural Cooperation (RCISCC) led by its president V.V. Tereshkova paid a visit to Beijing and Shanghai from May 19 to 24,2004, and attended the celebration of the 50th anniversary of the founding of the CPAFFC.展开更多
The centenary of the birth of well-known Soviet writer Nikolai Ostrovskii fell on September 29 this year. His novel How the Steel Was Tempered is known to every household in China. The heroic deeds of the protagonist ...The centenary of the birth of well-known Soviet writer Nikolai Ostrovskii fell on September 29 this year. His novel How the Steel Was Tempered is known to every household in China. The heroic deeds of the protagonist in the novel Pavel Korchagin have educated and influenced genera-展开更多
At the invitation of the Russian Centre for International Scientific and Cultural Cooperation (RCISCC), the CPAFFC and the China Science and Technology Asso-
Invited by the CPAFFC, the Kirghiz women’s goodwill delegation headed by K. Abdybalieva visited Beijing, Shanghai and Suzhou.CPAFFC President Chen Haosu and Vice President Su Guang met with the delegation and hosted ...Invited by the CPAFFC, the Kirghiz women’s goodwill delegation headed by K. Abdybalieva visited Beijing, Shanghai and Suzhou.CPAFFC President Chen Haosu and Vice President Su Guang met with the delegation and hosted a banquet in its honour. Kirghiz Ambassador E. Abdyldaev and his wife were present. President展开更多
文摘Invited by the CPAFFC, Mayor Arturas Zuokas of Vilnius, capital of Lithuania, led a delegation and visited Beijing, Guangzhou, Shenzhen and Shanghai from July 30 to August 7.It was the first time for the mayor and
基金Supported by the National Natural Science Foundation of China (Grant Nos. 10425420, 20433070 and 90503013)
文摘In the present work, through the path integral of Gaussian type correlation function, a new formalism based on Fermi-Golden Rule for calculating the rate constant of nonradiative decay process with Duschinsky rotation effect in polyatomic molecules is developed. The advantage of the present path-integral formalism is promoting-mode free. In order to get the rate constant, a "transition rate matrix" needs to be calculated. The rate constant calculated previously is only an approximation of diagonal elements of our "transition rate matrix " . The total rate should be the summation over all the matrix elements.
文摘When femtosecond （fs） timeresolved experiments are used to study ultrafast processes, quantum beat phenomena are often observed. In this paper, to analyze the fs timeresolved spectra, we will present the density matrix method, a powerful theoretical technique, which describes the dynamics of population and coherence of the system. How to employ it to study the pumpprobe experiments and fs ultrafast processes is described. The transition of pyrazine is used as an example to demonstrate the application of the density matrix method. Recently, Suzuki＇s group have employed the 22 fs time resolution laser to study the dynamics of the state of pyrazine. In this case, conical intersection is commonly believed to play an important role in this nonadiabatic process. How to treat the effect of conical intersection on nonadiabatic processes and fs timeresolved spectra is presented. Another important ultrafast process, vibrational relaxation, which takes place in subps and ps range and has never been carefully studied, is treated in this paper. The vibrational relaxation in water dimer is chosen to demonstrate the calculation. It should be noted that the vibrational relaxation of （H20）2 has not been experimentally studied but it can be accomplished by the pump-probe experiments.
文摘Silin and the Wuhan Yangtze River Bridge On October 15, 1957, in the three towns of Wuhan, millions of people rejoiced at the completion and opening to traffic of the Wuhan Yangtze River Bridge-the first bridge over the Yangtze River. Amid the deafening noise of firecrackers, sound of gongs and drums and people’s cheers, the first train sped across the railway deck
文摘A3-member delegation led by Su Guang, vice president of the CPAFFC and the China-Ukraine Friendship Association (CUFA), paid a goodwill working visit to Kiev, capital of Ukraine, and Yalta from June 20 to 27.
文摘At the invitation of the CPAFFC, a delegation of the Russian Centre of International Scientific and Cultural Cooperation (RCISCC) led by its president V.V. Tereshkova paid a visit to Beijing and Shanghai from May 19 to 24,2004, and attended the celebration of the 50th anniversary of the founding of the CPAFFC.
文摘The centenary of the birth of well-known Soviet writer Nikolai Ostrovskii fell on September 29 this year. His novel How the Steel Was Tempered is known to every household in China. The heroic deeds of the protagonist in the novel Pavel Korchagin have educated and influenced genera-
文摘At the invitation of the Russian Centre for International Scientific and Cultural Cooperation (RCISCC), the CPAFFC and the China Science and Technology Asso-
文摘Invited by the CPAFFC, the Kirghiz women’s goodwill delegation headed by K. Abdybalieva visited Beijing, Shanghai and Suzhou.CPAFFC President Chen Haosu and Vice President Su Guang met with the delegation and hosted a banquet in its honour. Kirghiz Ambassador E. Abdyldaev and his wife were present. President
