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The EBA of protein with the anion exchanger Streamline DEAE was examined by investigating the effect of liquid flow rate, liquid viscosity and protein concentration. A modified mathematical model was established to describe protein adsorption behavior in the expanded bed chromatography by taking into account the axial size classification of the adsorbent within the bed.

研究了阴离子交换吸附剂 Streamline DEAE 的蛋白质吸附特性及其膨胀床的蛋白质动态吸附行为，考察了液相粘度、流速和蛋白质浓度对色谱穿透曲线的影响。

Nonbicarbonate and intracellular buffers contribute to the buffering of newly formed acid so that the actual drop in [HCO3-] is usually less than the increase in the anion gap due to a simple elevated-gap metabolic acidosis.

非碳酸氢盐和细胞内缓冲液有利于缓冲新形成的酸，以致实际[HCO3-]的下降低于单纯性AG增高型代谢性酸中毒引起的阴离子间隙的增加。

Nonbicarbonate and intracellular buffers contribute to the buffering of newly form ed acid so that the actual drop in [HCO3-] is usually less than the increase in the anion gap due to a simple elevated-gap metabolic acidosis.

非碳酸氢盐和细胞内缓冲液有利于缓冲新形成的酸，以致实际[HCO3-]的下降低于单纯性AG增高型代谢性酸中毒引起的阴离子间隙的增加。

The dechroming mechanism of organic acid from chrome shavings was studied from the following aspects,the depolymerization of complex compound,the replacement of H+ and the replacement of organic acid radical anion.

从络合物解聚、氢离子取代和有机酸根阴离子取代3个方面，探讨了有机酸的脱铬机理，认为氢离子的取代和有机酸阴离子的取代起主要作用。

The metal ion and the anion of the mineral acid form an insoluble salt.

金属离子和无机酸的阴离子生成一种难溶的盐。

Layered double hydroxides are sort of anionic layered materials with anion exchanging ability and show wide application prospects in the fields of catalysis, pharmaceutical, environmental protection and functional additive agents etc.

水滑石类化合物是一类阴离子型层状功能材料，因其层间阴离子的可交换性，调整层板结构和组成发生变化，从而使之在催化、制药、环保、功能助剂等领域显示出广阔的应用前景。

Tudy on the structure and stablities of anion cluster(SiO_2)_nX~-3MR (three-membered ring) structure, 2MR (two-membered ring) linear chain structure and pseudotetrahedral cage structure have been proposed for the anion cluster (SiO_2)_nX~-(n=1~5 X=_, 0, OH).

iO_2_nX~-离子团簇结构和稳定性的理论研究主要研究(SiO_2)_nX~-(n=1～5 X=_，O，OH)离子团簇的三类典型结构(三元环结构、二元环链状结构和四面体笼状结构)。

The B3LYP/6-31+G level of theory and the polarizable continuum model are employed to study the binding interactions between amidinium and tetrazolate anion which have two binding modes (side-on and end-on) as well as the binding interaction between amidinium and formate anion. We find, in the gas phase, that the end-on acetamidinium tetrazolate is more stable with its interaction energy 3.56 kJ/mol higher than that of the side-on.

采用密度泛函B3LYP/6-31+G 方法和自洽反应场极化连续模型研究四唑负离子与脒类正离子形成的两种形式的复合物及甲酸根负离子与脒类正离子形成的复合物在气相和二甲亚砜溶剂中的稳定性。

Sizing is clearly headed in the direction of neutral, and neutral divides in two directions: one is self-retention of neutral, such as the AKD, ASA cationtype Rosin, neutrase ployster and the other is a non-self-fixed neutral, such as the anion dispersed oil Rosin, anion, neutral polyester resin, and the latest research interest is the preparation, to meet the many self-retention and Rosin Sizing the performance of the Department of sizing agent, such as neutrase ployster, epoxidized Rosin, etc.

造纸施胶正朝着中性施胶方向迅猛发展，而中性施胶剂又分为两个方向，一是自身留着型中性施胶剂，如AKD、ASA、阳离子分散松香胶、中性聚酯，另一类是非自定型中性施胶剂，如阴离子中性分散松香、阴离子石油树脂、中性聚酯等，而最新型研究方向则是将二者统一起来，制备成兼具自身留着和松香系施胶性能的施胶剂，如中性聚酯，环氧化松香等。

The facts influencing the high stereoselectivity were discussed. It is proposed that the stability of the tri- molecular transition state or the stereoelectronic effect of the vinyl anion intermediate formed by the nucleophilic addition of halide anion to the electron-deficient carbon- carbon triple bond might be responsible for the high Z-stereoselectivity.

通过对影响反应的高立体选择性因素的研究，认为反应的三分子过渡态的稳定性或生成的烯基负离子中间体的立体电子效应决定了反应的高度Z立体选择性。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。