NITROGEN is the most abundant element in the earth’s atmosphere. The study of optical oscillator strengths of nitrogen is of great significance in atmosphere physics, space physics and environment science. These resu...NITROGEN is the most abundant element in the earth’s atmosphere. The study of optical oscillator strengths of nitrogen is of great significance in atmosphere physics, space physics and environment science. These results are also used in many fields, such as fusion plasma and developments of the nitrogen laser. As we know, calculation of absolute optical oscillator strengths of molecular nitrogen are still at the level of electronic rather than vibronic states resolved.展开更多
RECENTLY,the structure of MoFe protein from Azotobacter vinelandii has been deter-mined,and based on this,the structural models of FeMo-co and P-clusters in MoFe proteinhave been proposed.According to the model,FeMo-c...RECENTLY,the structure of MoFe protein from Azotobacter vinelandii has been deter-mined,and based on this,the structural models of FeMo-co and P-clusters in MoFe proteinhave been proposed.According to the model,FeMo-co consists of two clusters,Fe<sub>4</sub>S<sub>3</sub> andMoFe<sub>3</sub>S<sub>3</sub> with a homocitrate ligand coordinated to Mo atom,bridged by three nonprotein lig-ands,two of which are inorganic sulfur atoms and the other is nitrogen- or展开更多
文摘NITROGEN is the most abundant element in the earth’s atmosphere. The study of optical oscillator strengths of nitrogen is of great significance in atmosphere physics, space physics and environment science. These results are also used in many fields, such as fusion plasma and developments of the nitrogen laser. As we know, calculation of absolute optical oscillator strengths of molecular nitrogen are still at the level of electronic rather than vibronic states resolved.
文摘RECENTLY,the structure of MoFe protein from Azotobacter vinelandii has been deter-mined,and based on this,the structural models of FeMo-co and P-clusters in MoFe proteinhave been proposed.According to the model,FeMo-co consists of two clusters,Fe<sub>4</sub>S<sub>3</sub> andMoFe<sub>3</sub>S<sub>3</sub> with a homocitrate ligand coordinated to Mo atom,bridged by three nonprotein lig-ands,two of which are inorganic sulfur atoms and the other is nitrogen- or
