The chemical modification of human plasminogen(HPg) was studied with 1-ethyl-3-(3- dimethyl aminopropyl) carbodiimide(EDC), N -acetylimidazole(NAI), 1,2-cyclohexanedione(CHD), chloramine T(Ch-T) and N -bro...The chemical modification of human plasminogen(HPg) was studied with 1-ethyl-3-(3- dimethyl aminopropyl) carbodiimide(EDC), N -acetylimidazole(NAI), 1,2-cyclohexanedione(CHD), chloramine T(Ch-T) and N -bromosuccinimide(NBS) as modifying reagents at its carboxyl group, tyrosine, arginine, methionine and tryptophan residues, respectively. The results indicate that tyrosine and arginine residues are not essential for HPg activity, while carboxyl groups, methionine and tryptophan residues are important for the activity of HPg. The Keech and Farrant′s kinetic analysis reveals that one tryptophan residue, one methionine residue and two carboxyl groups are essential for HPg activity.展开更多
The TMN (telecommunications management network) project was started by the ITU T in the fall of 1985. And with the development of the TMN technologies, more and more TMN based networks have been developed. In this pa...The TMN (telecommunications management network) project was started by the ITU T in the fall of 1985. And with the development of the TMN technologies, more and more TMN based networks have been developed. In this paper we study and analyze the application of TMN to intelligent networks from the view of configuration management function, design the TMN based network configuration management system under UNIX environment in intelligent networks, and use the GDMO to describe the information model of the system in the design.展开更多
基金Supported by the Natural Science Foundation of Jilin Province( No.0 30 912 )
文摘The chemical modification of human plasminogen(HPg) was studied with 1-ethyl-3-(3- dimethyl aminopropyl) carbodiimide(EDC), N -acetylimidazole(NAI), 1,2-cyclohexanedione(CHD), chloramine T(Ch-T) and N -bromosuccinimide(NBS) as modifying reagents at its carboxyl group, tyrosine, arginine, methionine and tryptophan residues, respectively. The results indicate that tyrosine and arginine residues are not essential for HPg activity, while carboxyl groups, methionine and tryptophan residues are important for the activity of HPg. The Keech and Farrant′s kinetic analysis reveals that one tryptophan residue, one methionine residue and two carboxyl groups are essential for HPg activity.
文摘The TMN (telecommunications management network) project was started by the ITU T in the fall of 1985. And with the development of the TMN technologies, more and more TMN based networks have been developed. In this paper we study and analyze the application of TMN to intelligent networks from the view of configuration management function, design the TMN based network configuration management system under UNIX environment in intelligent networks, and use the GDMO to describe the information model of the system in the design.
