查询词典 anion

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。

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。

In this paper, adipate -intercalated LDHs were prepared by direct anion exchange method,acidic one step synthesis method and alkaline one step synthesis method,and were characterized by XRD and IR.

采用阴离子直接交换法、酸性和碱性条件下原位一步合成法分别制备了Mg2Al-己二酸根插层水滑石，用XRD、IR对合成的样品进行了组成和结构表征，DTA结合不同温度下焙烧样品的XRD和IR分析研究了样品的热分解过程。

Objective: To study the relationship between serum anion gap and serum albumin in patients of chronic renal failure.

目的 ：探讨血清白蛋白对慢性肾衰氮质血症期患者的血清阴离子隙的影响。

The nucleophilic attack step of a classical Aldol reaction was studied using acetaldehyde anion and formaldehyde as reactants.

采用乙醛负离子和甲醛作为反应物，对经典的醛醇缩合反应中的亲核进攻步骤进行了研究。

Looking to bounce back from defeat against Cesena last weekend, the Calabrian boss will be sticking to his tried and tested 4-3-3, with Lopez and Sedivic joined up front in Giampaolo's absence by either Nanni or Plasmati.

鉴于上周末对切塞纳的比赛中反败为胜，这支南方球队将会更坚持其一贯而有效的4-3-3阵型，洛佩斯和塞德维奇将取代受伤缺席的詹保罗，和纳尼或者帕斯马蒂中的一个搭档锋线。

Meanwhile, their exposure to the more freewheeling ways of the West broadened dramatically.

另外，西方较自由的生活方式对年轻人的影响增大。