1、

The influence factors which affected the activity of catalyst, such as amount of metal salt, loaded temperature, loaded time, granule size of carrier were studied by using uniform design and ion exchange resin as carrier.

以离子交换树脂为载体,用均匀设计方法考查了负载型酯化催化剂制备中负载金属盐用量,负载温度,负载时间和载体粒度等因素对催化剂活性的影响。

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2、

Based on the methanogenic toxicity assay, the adaptation test and the recovery test, it is inferred that aluminium ion impacts on the activity of methanogenic bacteria as metabolic toxin.

通过产甲烷毒性试验、毒性驯化与毒性恢复试验,可以推断混凝剂中铝离子对甲烷菌产甲烷活性的影响类别为代谢毒素类;

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3、

The BChE was purified to electrophoretic homogeneity by salting out, ion-exchange chromatography on DEAE-cellulose and gel filtration on Sephadex G-200. Finally the enzyme was purified 278. 5 folds and the enzyme activity recovery ratio was 17.8%.

该酶经过两次硫酸铵盐析、DEAE-52离子交换层析和Sephadex G-200凝胶过滤层析后,其比活力由21.5U/mg提高到5944.1U/mg,纯化278.5倍,回收率为17.8%,达到电泳纯。

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4、

Structure and photocatalytic activity of titanium oxide doped with Nb ion

Nb搀杂TiO2催化剂结构与光催化性能研究

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5、

The surface active agent of negative ion type restrains the activity of enzyme;

阴离子表面活性剂对酶有抑制作用;

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6、

Determination of Surface Activity of Positive Ion Imidazoline Surfactants

季铵盐型阳离子咪唑啉表面活性的测定

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7、

If proper ion concentration was given , relatively high activity of RNA polymerase could be shown.

选择了适当的离子浓度能显示较高的rna聚合酶的活性.

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8、

measure ment of average activity coefficient of ion and standard electrode potential with the emf method

电动势法测量离子平均活度系数和标准电极电位

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9、

chloride ion has great effect on catalyst activity at low temperature.

认为,Cl-的存在对低温活性影响较大。

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10、

ag~+, zr~ ( 4+) and sn~ ( 4+) doping markedly improved the photocatalytic activity, and the temperature to calcine had different influences on the photocatalytic activity of different metal ions-doped coupled semiconductors.

在分别掺杂含量为10-4mol/g的Ag+,Zr4+,Sn4+离子后催化活性有明显提高;焙烧活化处理温度对掺杂不同金属离子催化剂活性有不同的影响。

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11、

Effects of divalent copper ion on the growth and peroxidase activity of mung bean sprout

二价铜离子对绿豆芽根生长和过氧化物酶活性影响

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12、

When applying surface active agent of basic ion type, the enzyme loses its activity;

阳离子表面恬性剂存在时,酶失去活性;

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13、

Ranelic acid, an organic acid with strong polar and without pharmacological activity, can form stable chelate compound with bivalence Sr ion.

雷尼酸是强极性的有机酸,无药理活性,但能与二价锶离子形成稳定的螯合物。

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14、

The decrement of the steady state flux was attached to the change of thermal activity of ON and the existence of ion competition.

原因是由氯化钠引起的离子强度的增大导致了药物活度的下降,进而致使稳态流量减小。

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15、

According to the basic physic-chemical principle of electrolyte solution and Pitzer Ion Interaction Approach, the study on the calculation of the equilibrium of salt-water system was carried out by calculating the activity coefficient of electrolyte solution and osmotic coefficient of water.

根据电解质溶液的基本物理化学原理和近代电解质溶液理论的Pitzer离子相互作用模型,通过计算浓电解质溶液的活度系数和水的活度,研究了盐-水体系溶解平衡的计算方法。

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16、

The PRPP synthetase activity in BFU Es and CFU Es from bone marrows of mice was estimated by ion pair reversed phase HPLC ( IPr HPLC), using isocratic elution.

采用离子对反相高效液相色谱法(IPr HPLC)的单液等度洗脱,测定了小鼠骨髓红系爆增性集落形成单位(BFU-Es)与红系集落形成单位(CFU-Es)的PRPP合成酶活性。

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17、

The predominance area diagram of electron activity ( p ε) as a function of pH for chlorine system with chlorate ion, chlorine dioxide, chlorous acid, chlorite ion, hypochlorous acid, hypochlorite ion, molecular chlorine and chloride ion has been constructed.

在电子活度(pε)和pH优势区域图上,建立了包括氯酸根、二氧化氯、亚氯酸、亚氯酸根、次氯酸、次氯酸根、氯气和氯离子的氯体系多元平衡模式;

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18、

Using the specific ion-interaction equations of Pitzer to calculate activity coefficients, the model is also able to accurately predict the difference between dissociation constants and apparent dissociation constants, and the concentrations of all species at a given T-P-m condition.

模型能够准确地计算并预测出碳酸离解常数和表观离解常数之差,并且在给定的T-P-m条件下可得到所有物种的浓度及活度,其中活度系数的计算采用了Pizter离子相互作用模型。

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19、

Calcium ion inhibitors can suppress decreasing of Salvia cell suspension POD and CAT activity salicylic acid-induced.

钙离子抑制剂处理均可抑制水杨酸诱导的丹参悬浮培养细胞POD和CAT活性的降低。

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20、

These genes mainly involved in macromolecule metabolism and signal transduction, with the molecular function of transition metal ion binding, nucleotide binding and kinase activity;

差异基因主要涉及大分子代谢、信号传导等生物学过程,具有过渡金属离子结合能力、腺核苷酸结合能力及激酶活性。

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