The chemical structures of alginate and chitosan were analyzed , and a comparative study was conducted of the absorbability , metal ion binding ability and antimicrobial property of alginate and chitosan fibers 分析了海藻酸和甲壳胺的化学结构,对其吸附性能、结合重金属离子的能力以及抗菌性能作了比较。
Competition reaction shows that znpbmt - is formed while lead ion and zinc ion bind competitively to apomt - ; however , apomt - s metal binding sites are all took up by lead ion , which means apomt - is more sensitive to lead ion than apomt - 竞争结合apomt -形成的是金属混配的金属硫蛋白而apomt -的金属结合位点则完全被pb
Clusters are stable aggregates of a few or thousands of atoms , molecules or ions bound together by chemical or physical force . their special microstructure and peculiar physical and chemical properties cast light on a new way leading to fabricating special materials 团簇( cluster )是由几个乃至上千个原子、分子或离子通过物理和化学结合力组成相对稳定的聚集体,团簇的微观结构特点和奇异的物理化学性质为制造和发展特殊的新材料开辟了一种新途径。
In low metal ions concentration environment , zn2 + ions bind to at are easier than to gc , whereas in higher metal ions concentration surroundings , zn2 + ions bind to gc are easier than to at , so in higher zn2 + ions environment , gc bases are damaged larger than at 在低浓度情况下, znz十较多的跟at结合,但是在较高浓度时, znz +跟gc的结合就要强很多。而cdz +则主要跟at碱基结合,这种结合打断了at碱基对之间的氢键,破坏了dna的稳定性,造成gc百分含量增加。