Water-insoluble carboxyl-containing starch graft polymers were prepared. Residual metal ion concentrations in solutions treated with the insoluble starch graft polymers were measured in different pH. The mechanism of ...Water-insoluble carboxyl-containing starch graft polymers were prepared. Residual metal ion concentrations in solutions treated with the insoluble starch graft polymers were measured in different pH. The mechanism of removing heavy metals from aqueous solutions with the carboxylated starchs was described.展开更多
A combinatorial cleavage, acidolysis-saponification, after solid phase peptide synthesis on photo-labile resin was stated in present paper. Peptide (Gly-Asp-Ala-Lys-Gly)(2)>Lys-OH was liberated with high yield(92.1...A combinatorial cleavage, acidolysis-saponification, after solid phase peptide synthesis on photo-labile resin was stated in present paper. Peptide (Gly-Asp-Ala-Lys-Gly)(2)>Lys-OH was liberated with high yield(92.1%) and excellent purity(91.6%) from its protected peptidyl nitro-resin precursor by a new orthorgonal protocol: 1) Hi-TFMSA, 2) 0.2N NaOH/90% EtOH.展开更多
SILICON is a quite important material in the application of energy resources technology. With the development of ion-implantation technique and the increasing interest in dopping, it is very important to know the rela...SILICON is a quite important material in the application of energy resources technology. With the development of ion-implantation technique and the increasing interest in dopping, it is very important to know the relationship between the vacacies induced by the particle irradiation damage and the annealing temperature. The positron annihilation is a very useful method for studying defects in the semiconductor, because the annihilation characteristics of trapped positron are influenced by the charge of the defects. It has been shown that the positrons can be trapped by defects created by irradi-展开更多
文摘Water-insoluble carboxyl-containing starch graft polymers were prepared. Residual metal ion concentrations in solutions treated with the insoluble starch graft polymers were measured in different pH. The mechanism of removing heavy metals from aqueous solutions with the carboxylated starchs was described.
文摘A combinatorial cleavage, acidolysis-saponification, after solid phase peptide synthesis on photo-labile resin was stated in present paper. Peptide (Gly-Asp-Ala-Lys-Gly)(2)>Lys-OH was liberated with high yield(92.1%) and excellent purity(91.6%) from its protected peptidyl nitro-resin precursor by a new orthorgonal protocol: 1) Hi-TFMSA, 2) 0.2N NaOH/90% EtOH.
文摘SILICON is a quite important material in the application of energy resources technology. With the development of ion-implantation technique and the increasing interest in dopping, it is very important to know the relationship between the vacacies induced by the particle irradiation damage and the annealing temperature. The positron annihilation is a very useful method for studying defects in the semiconductor, because the annihilation characteristics of trapped positron are influenced by the charge of the defects. It has been shown that the positrons can be trapped by defects created by irradi-
