Ab initio calculations have been performed for both the neutral form and zwitterion of imidazol1ylacetic acid in the gas phase and in aqueous solution ( using SCRF model ) .

对咪唑-1-乙酸中性分子和 两性 离子分别在气相及水溶液中（采用SCRF模型）进行了从头算，探讨了溶剂和基组对体系几何结构和相对稳定性的影响。

The cysteine in the clay mineral existed in the forms of zwitterion and anion the O and S in it chelated zinc cation to form configuration of hexatomic ring .

强相互作用 吸附的半胱氨酸 主要是以去质子的 两性 离子和阴离子形式存在于粘土矿物上，与过渡金属形成螯合的六元环结构。

The Research on the Synthesis of Chiral Zwitterion of the Carumonam

卡 芦莫南的手性内盐的合成研究

The tyrosine is adsorbed mainly in the form of zwitterion ;

酪氨酸被吸附的主要形式是 兼 性 离子；

Coefficient of dissociation of this kind of zwitterion is low can affect its to organize penetration but can raise its to be opposite mucous penetration .

这种 两性 离子离解系数低，可影响其组织穿透力，但可提高其对粘液的穿透力。

In this paper the chemical reaction of poly ( vinyl pyridine ) was studied and the polyelectrolytes CAPVP containing zwitterion structure units were synthesized .

以聚乙烯吡啶的化学反应制备了含正负 离子对结构单元的两性聚合物CAPVP。

FT-IR results showed that in the strongly acidic weakly acidic and basic solutions the glycine exists in the form of cation zwitterion and anion respectively .

在强酸性、弱酸性和碱性溶液中， 吸附 态的甘氨酸分别 主要以阳离子、 两性 离子和阴离子形式存在。

The Effect of Zwitterion Starch on Strength Properties of Paper Made from Wheat Straw Pulp

两性淀粉对麦草浆强度性能的影响

Synthetic studies on blood compatible materials ⅷ . poly ( ether-urethane ) surface grafted with SULFO-AMMONIUM zwitterion monomer activated by ozone

血液相容材料的合成研究Ⅷ.磺铵 两性 离子单体在聚醚氨酯表面的臭氧活化接枝

The optimum sought super zwitterion polymer drilling liquid is with the aim practicality advantage and economy .

优选的超级 两性 离子聚合物钻井液具有针对性、实用性、先进性、经济性。

Preparation and performances of zwitterion polymer cross linked gelled acid

两性 离子聚合物交联稠化酸的制备及其性能研究