离子交换

Usually resinous solid; widely used in industrial processing.

固体'。''间交换离子的过程。

The sorption capacity of calcium bentonite is too small and need too much bentonite in the experiment.

在高浓度氟溶液中，对氟离子的吸附主要是由于膨润土中的Ca〓和溶液中的Na〓发生交换。

The decrease in the intensity of the ferromagnetic double-exchange interaction has been correlated with the increase in the terbium content and the decrease of .

铁磁性的双交换作用和铽含量的增加及A位离子的平均半径＜r〓＞的减少紧密相关。

The effect of zeolites ion-exchanged by transition metals on thermal catalytic cracking reaction is studied. The product distributions of the cracking reactions catalyzed by theβor ZSM-5 zeolites exchanged with transition metals are different from that catalyzed by corresponding Hzeolites, which means the mechanism of cracking reactions has varied. Group Ⅷ metals Fe, Co, Ni and Cu, Zn are shown to be of strong catalytic activity of oxidative dehydrogenation, while Ti and Cr are not of oxidative activity. Catalyzed by zeolites or catalyst containing Ag, conversion of thermal catalytic cracking reactions and the yield of ethylene increase while the yield of propylene does not decrease. Silver can not only promote the formation of carbonium ion, but also convert carbonium ion into free-radical via redox reaction. The weak adsorption of olefins on silver reduces the occurrence of hydrogen transfer and dehydrogenation. As a result, the yield of light olefins is favored by silver in the catalyst.

采用过渡金属交换的分子筛作为催化剂，进行催化热裂解制取乙烯的反应，研究发现，在β沸石分子筛和ZSM-5分子筛中引入过渡金属后，催化热裂解反应的产物分布与相应的氢型分子筛相比有了较大的变化，说明过渡金属的加入对于催化热裂解反应的机理具有影响，Ⅷ族金属如Fe、Co、Ni和第Ⅰ、Ⅱ副族Cu、Zn表现出较强的氧化脱氢活性，产物中氢气、焦炭的产率很高，Ti、Cr则未表现出氧化作用：分子筛及催化剂中引入银后，催化热裂解反应的转化率和乙烯的产率有了提高，丙烯产率没有很大的变化，说明银在催化热裂解反应中能够促进正碳离子的生成，又有可能通过氧化-还原作用部分改变反应机理，促进了自由基的生成，并且由于银对烯烃的吸附很弱，其氢转移反应和脱氢、加氢活性比较低，有利于烯烃产率的提高。

The two ion theories related to dipolar interaction and anisotropic exchange interaction are also introduced briefly.

对于磁偶极子及各向异性交换作用的双离子理论的计算方法也作了扼要的介绍。

The synthesis methods of ethyl lactate catalyzed by P-toluene sulfonic acid, cationic exchange resin, ferric chloride hexahydrate, stannous chloride, Aluminium chloride, modified zirconium oxid, ferric-potassium vitriol, ammonium ferric sulfate dodecahydrate, rave earth sulfate, sodium bisulfate monohydrate, complex solid superacid, heteropoly acid, molecular sieve, ionic liquid and lipase etal.

评述了对甲苯磺酸，阳离子交换树脂，六水三氧化铁，氯化亚锡，三氯化铭，改性氧化锆，铁钾矾，十二水合硫酸铁铵，稀土硫酸盐，一水硫酸氢钠，复合固体超强酸，杂多酸，分子筛，离子液体和脂肪酶等催化剂催化合成乳酸乙酯的合成方法。

We used neuron from Lymnaea stagnalis to determine how lidocaine affects in, Na-H exchanger, and in.

我们用椎实螺属神经元来测定利多卡因如何影响细胞内 PH 值、钠氢交换及细胞内钠离子浓度。

The wall-broken Cole bee pollen lOOg is extracted by 1:10 of anhydrous ethanol , continuously stirred in darkness for two hours. And then by means of centrifuge, cleaning, vacuum concentration, adjusting pH value, anion exchange resin chromatography, propanone extraction,being blown to dry and freeze-dried, we use HPLC to detect the content of the GA derivative of the freeze-dried powder.

将破壁油菜蜂花粉100g，在避光条件下用无水乙醇(料液比1：10)连续搅拌浸提2小时，浸提液经离心、洗涤、真空浓缩、pH值调节、阴阳离子树脂交换、乙酸乙酯萃取、吹干再冻干后用HPLC法分析，得冻干样品中赤霉素衍生物的含量为51.29％。

The following results have been obtained: 1 Expression of SbNHX1 in E. coli enhanced Na+ and K+ tolerances, but not to others; 2 The sequence from 1353-1514bp in SbNHX1 gene played a role for SbNHX1 to Na+ and K+ tolerances; 3 The Na+/H+ antiporter of Salicornia Bigelovii Torr. catalysed Na+/H+ or K+/H+ exchange with equal affinity, which indicates that the SbNHX1 is more likely to locate on member of vacuolar, and responds to transport Na+ into the vacuole from cytoplasm.

证明了SbNHX1能抵抗Na+和K+的胁迫，但对其它盐离子没有抗性；2）证明了北美海蓬子Na+/H+逆向转运蛋白基因（SbNHX1）C末端从基因的C末端1353bp至1514bp的序列在耐盐中起一定的作用；3）证明了北美海蓬子Na+/H+逆向转运蛋白（SbNHX1）对Na+和K+交换的等亲和性，对于这一点，说明北美海蓬子Na+/H+逆向转运蛋白与定位于液泡膜上的Na+/H+逆向转运蛋白的功能相似。

By using multi-dimensional nuclear magnetic resonance method we have studied the folding mechanism of staphylococcal nuclease in vitro; the tertiary interactions for folding of SNase fragments into native-like conformation; the interaction between SNase N- and C-terminal subunits; the relationship of enzyme activity with folding and dynamic states of SNase; the structural properties of enzyme protein while exert its function. We have studied the internal motions of thermophilic Archaea protein Ssh10b and mechanism of its heat-resistance using the NMR 1H-15N relaxation and H/D exchange methods. We have determined the 3D solution structure of human translationally controlled tumor protein TCTP and the Ca2+-binding site; determined the 3D crystal structure of human mitoNEET, a novel protein from distinct groups of iron-sulfur proteins; determined the 3D solution structure of a novel chromatin protein Cren7. Determination of SNase-DNA and Archaea protein-DNA complex structures are in progress.

运用异核多维核磁共振方法研究了金黄色葡萄球菌酶体外折叠机制，酶蛋白片段体外折叠成类天然溶液三维构象的三级相互作用力，酶蛋白亚基间的相互作用，酶蛋白的折叠以及内运动状态与酶活力的关系，酶蛋白发挥功能时的结构特性；运用NMR的1H-15N 驰豫和H/D交换方法研究了嗜热古菌蛋白质Ssh10b双体结构内运动特性，热稳定性机制；确定了人翻译控制的肿瘤蛋白TCTP蛋白的溶液三维结构及其钙离子的结合部位；确定了一类新的铁硫蛋白家族蛋白人线粒体膜上mitoNEET蛋白的晶体结构；确定了一个新型的染色质蛋白Cren7的溶液三维结构；正在研究金黄色葡萄球菌酶及嗜热古菌蛋白质与DNA复合体的溶液三维结构。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。