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activity site
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  活性中心
     The activity site of Lox-3 may be-SH in rice embryo.
     稻胚Lox - 3活性中心可能为 -SH。
短句来源
     Activity site of catalyst was weak L-acid. Pore volume and BET specific surface area of catalyst were 0.85mL/g and 217.7m2/g respectively.
     表征结果表明,活性杂多酸以无定形形态负载在载体上,其活性中心为弱L酸,催化剂的孔体积和比表面积分别为0.85mL/g和217.7m2/g。
短句来源
     The results obtainted from TPR,TPD and CO adsorption indicate that the addition of samarium oxide can decrease the reduction temperature of NiO,increase the amount of absorbed H 2 and the number of activity site,and also make the charge density higher.
     TPR、TPD、CO吸附结果表明,海泡石和钐能使镍的还原温度降低,氢吸附量增大,活性中心增加,同时使镍原子电子密度增高。
短句来源
     Hemoglobin (Hb), which was adopted as the biomimetic enzyme of horseradish peroxidase (HRP) for their similar structure in activity site, was used here to study in details its catalytic behavior both in the aqueous media and AOT reversed micro-emulsions.
     本文采用具有相同活性中心的血红蛋白(Hb)模拟辣根过氧化物酶(HRP)的催化行为,系统研究了血红蛋白在水溶液、反相微乳液中的过氧化物酶活性。
短句来源
     It was found that the main reason of catalytic deactivation is the formation of NiOcrystal thus reducing the number of activity site on the catalyst Surfaces, and the secondary reason is the decrease of surface area and the formation of NiA12O4. on a part of active sites.
     发现催化剂失活主要是由于活性中心Ni0聚集并形成晶相,因而降低了催化剂表面活性中心数,其次是由于部分活性中心形成难还原的NiA12O4物种和催化剂比表面降低。
短句来源
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  活性位点
     Study on influence of activity site mutation on Aspergillu. ficuum phytase preferable pH.
     活性位点突变对A.ficuum植酸酶pH偏好性影响的研究
短句来源
     Conclusions Antiviral activity site of IFN was that of its antiproliferative activity, though some other sites might also be involved in the functioning of antiviral activity.
     干扰素的抗病毒活性位点也是它的抗增殖活性位点 ,而干扰素的抗增殖活性作用的发挥可能还有其它位点的参与 ;
短句来源
     No significant difference was observed between rSEB and commrcial SEB in activity of promoting the secretion of IL-1α and TN Fα by human umbilical vein endothelial cell EVC-304. Conclusion The successful construction of eukaryotic expression system of SEB laid a foundation of analyzing the toxicity-related activity site in SEB molecule and obtaining attenuated or avirulent mutant by site-directed mutatio n.
     rSEB与SEB商品有相似的促人脐静脉内皮细胞EVC 30 4分泌IL 1α和TNFα的活性。 结论 已成功地构建了SEB的真核表达系统 ,为进一步分析SEB分子中毒性相关活性位点、定位突变获得减毒或无毒的突变体奠定了基础。
短句来源
  活性位置
     The electronic structure of 5,14Dihydro6,8,15,17tetramethydibenzotetraazaannulene and metal complexes were calculated by use of quantum chemistry program package,MOAN and Gaussian 94.As a result,the activity site and reactivity were discussed.
     本文用量子化学半经验方法和从头算研究二苯并四氮杂[14]轮烯离子及其金属配合物,讨论了轮烯配合物的活性位置
短句来源
  “activity site”译为未确定词的双语例句
     Time traces to the beginning of Quaternary Holocene (Hainan Island's first human activity site is Sanya Loubidong, ~(14)C 10642±207aBP).
     时间上溯到第四纪全新世初(本岛第一个人类活动遗址三亚落笔洞,~(14)C年代为10642±207aBP)。 大尺度的时间似乎更能说明生态环境变迁的来龙去脉。
短句来源
     The protein ACE2A (65KD) but not ACE2B (77KD) could bind to S1 protein of SARS-CoV. This result showed that the receptor activity of ACE2 was not related to the enzyme activity site, and the receptor functional domain was within N terminal 335 amino acids. This was so far the shortest ACE2 fragment expressed which had SARS-CoV receptor function.
     将包涵体变性、复性后,经Western blot证实pGEX-ACE2A表达的蛋白(~65KD)能与SARS-CoV S1蛋白特异结合,而pGEX-ACE2B表达的蛋白(~77KD)不能与S1蛋白结合。
短句来源
     The Impact of Regional Environment on Children's Activity Site——The Analysis of Space Environment of Children Encountering Criminals in Japan as the Example
     区域环境对儿童活动场所的影响——以日本儿童遭遇犯罪的空间环境分析为例
短句来源
     The range of radius 500~1000km from the epicenter of the M8.1 event is the main earthquake activity site in the coming six years.
     未来 1~ 6年在以 8.1级地震为中心、半径 5 0 0 km~ 1 0 0 0 km内是发生 M≥ 7 地震的主要场所。
短句来源
     The mosque is a activity site and culture center of Muslim religion.
     清真寺为穆斯林宗教活动场所和文化中心。
短句来源
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  activity site
RM1P was antigenic and reacted with polyclonal sera and 5 monoclonal antibodies (MAbs) spanning 4 epitopes including the membrane binding site and the transcription inhibition activity site.
      
These studies allow a tentative assignment of the cofactor activity site to the residues 177-322 of the 549 amino acid long chain of C4b-binding protein but indicated that residues in the region 332-395 are important in the binding activity.
      
The two non-responding experiments were conducted on a wall-drained, low-activity site (ARA means ranging 17-68 n moles ethylene core-1 h-1), the responding experiment was conducted on a poorly drained, high-ARA site.
      
MB+ and BNAH were separately accommodated within the β-CD cavity and the cavity walls may protect the activity site of the reactants.
      
Multivariate analysis classified the sampling sites in four groups based on the metal content in vegetal leaves in agreement with traffic and human activity site.
      
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The properties of HZSM-35 modified by Cr、Co、Ni was studied with a pulsemicroreaction.The acidity and acid strength of CrHZSM-35 as determined by techniques of pulsed poisoning experiment(PPE)showed that the activity sites ofo-xylene isomerization were chiefly weak Br(?)nsted acid sites.The weak acid siteswere partly transferred into strong ones with increase in temperature.The activ-ity and equilibrium selectivity of CrHZSM-35 increased by 10% and 1% respect-ively.But the mechanism of o-xylene isomerization...

The properties of HZSM-35 modified by Cr、Co、Ni was studied with a pulsemicroreaction.The acidity and acid strength of CrHZSM-35 as determined by techniques of pulsed poisoning experiment(PPE)showed that the activity sites ofo-xylene isomerization were chiefly weak Br(?)nsted acid sites.The weak acid siteswere partly transferred into strong ones with increase in temperature.The activ-ity and equilibrium selectivity of CrHZSM-35 increased by 10% and 1% respect-ively.But the mechanism of o-xylene isomerization remained unchanged.Thecatalytic activity increased with increasing content of metal.

采用脉冲微反技术对改性 ZSM-35沸石(Cr、Co、Ni)的性能进行了考察。吡啶、2,6-二甲基吡啶对 CrHZSM-35的酸度和酸强度试验表明,邻二甲苯异构化的活性中心是 B 酸中心,但主要是弱 B 酸中心。随温度升高,部分弱酸中心转化为强酸中心。Cr~(3+)的加入使 CrHZSM-35的活性比HZSM-35的活性高约10%,平衡选择性高约1%。金属离子的含最增加,催化活性增加。但邻二甲苯的异构化反应机理不变。

It has been documented thatthe binding activity sites of human cho-rionic gonadotropin(HCG) receptor and kdin human ovarian tumors are differentfrom those in the normal ovary. Andsome observations suggest that the HCGreceptor depends on adenylate cyclase(AC)for its physiological functions. We studiedthe activity of AC in normal human ovaryand ovarian tumors. Five human ovarian specimens andeighteen ovarian tumor specimens wereobtained from women patients undergoinggynecological surgery. Ovaries were...

It has been documented thatthe binding activity sites of human cho-rionic gonadotropin(HCG) receptor and kdin human ovarian tumors are differentfrom those in the normal ovary. Andsome observations suggest that the HCGreceptor depends on adenylate cyclase(AC)for its physiological functions. We studiedthe activity of AC in normal human ovaryand ovarian tumors. Five human ovarian specimens andeighteen ovarian tumor specimens wereobtained from women patients undergoinggynecological surgery. Ovaries were homo-genized and sonicated. The homogenateswere centrifuged at 1000×g for 15 min. Af-tersucrose density gradient ultracentrifuga-tion (78000×g, 4h). the membrane fractionwas collected from interface between 33%and 37%. The membrane protein approxi-mately 10μg, ATP 1mmol/L, ~3H-ATP5×10~4cpm, sulphydrylethyl alcohol 10 mmol/L, ina final volume of 200μl of Tris-HCl buffer(50 mmol/L), pH7.5, containing MgSO_4 5mmol/L, were incubated at 35℃ for 10 min.The reaction was stopped by boiling water bath for 3 min. The AC activity (U/mg): of humannormal ovary, 67±8, of cystadenocarcinomaserous, 146±70; of cystadenocarinoma mu-cinous, 289±83.

以人正常卵巢皮质层及手术切除的卵巢癌组织为材料,分别分离纯化细胞膜,测定膜蛋白的腺苷酸环化酶(AC)活性。结果:正常卵巢细胞膜AC活性为67±8U/mg蛋白;卵巢癌细胞膜AC活性明显高于正常,平均活性为234±86U/mg蛋白;卵巢癌中粘液性囊腺癌细胞膜AC活性高于浆液性囊腺癌者。

This paper reports the purification of CCO from bovine heart with ammonium sulfate precipitation, phneyl - Sepharose CL-4B hydrophobic chromatographic and cytochrome C-Sepharose 4B affinity chromatographic methods. The content of heme a and copper in the purified CCO reached 16. 3 n mols/mgPr and 15. 24 n atoms/mgPr. It was indicated that the activity of CCO decreased after removing the lipids. and rised by adding Tween 80. Hydrophobic environment of CCO activity site provided the protection to the catalytic...

This paper reports the purification of CCO from bovine heart with ammonium sulfate precipitation, phneyl - Sepharose CL-4B hydrophobic chromatographic and cytochrome C-Sepharose 4B affinity chromatographic methods. The content of heme a and copper in the purified CCO reached 16. 3 n mols/mgPr and 15. 24 n atoms/mgPr. It was indicated that the activity of CCO decreased after removing the lipids. and rised by adding Tween 80. Hydrophobic environment of CCO activity site provided the protection to the catalytic function.

本文应用硫酸铵分级沉淀、Phenyl-Sepharose CL-4B 疏水层析和 Cytocrome C-Sepharose 4B亲和层析的方法,从牛心肌中分离纯化了细胞色素C氧化酶。产品Heme a含量为16.32nmol/mg Pr,铜原子含量为15.24n atoms/ms Pr。活性实验表明,去脂的细胞色素 C氧化酶活性下降,加入Tween 80可使活性明显提高,说明疏水环境对酶的催化功能有保护作用。

 
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