specific activity

Transforming growth factor β( TGF-β) initiates its diverse cellular responses by binding to and activating specific cell surface receptors that have intrinsic serine/ threonine kinase activity.

转化生长因子β（transforming growth factor-，βTGF-β）可通过特异性结合并激活具有丝氨酸/苏氨酸激酶活性的细胞表面受体启动各种应答。

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The investigation and analysis on natural radioactivity nuclide specific activity of cement product in china

我国水泥产品天然放射性核素比活度的调查分析

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Specific activity of the product is 15.54 GBq/ mmol, radiochemical purity 95.7%.

放射性比度为15.54GBq/mmol，放化纯度为95.7%。

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The specific activity and the Fmax value of AChE were increased after firstly and then decreased with induction of sublethal dose of phoxim over 4 generations.

辛硫磷LD（10）剂量连续诱导棉铃虫4代，对AChE比活力和V（max）作用表现为先抑制后诱导增加，但变化幅度较小。

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The specific activity of digestive enzyme in one-year-old fingerling is higher than that of three-week-old fingerling in both species of fish, this result accords with the observation of tissue slice.

两种鱼肝胰脏消化酶活性均为一龄鱼种大于夏花阶段，这与组织切片的观察结果相符。

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Flavone is widely researched in drug exploitation because of its specific activity to human body.

黄酮类成分因其多样生物活性是目前中药研究的热点.

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In this survey, the surface γ dosage, radioactivity specific activity, uranium and thorium series equilibrium, the content of radioactive element of three kinds of typical Chinese zircon mineral has been analyzed, and the component and radioactivity of zircon in Wanning, Hainan Province tested.

调查分析了我国3个典型矿区锆英砂堆放表面γ剂量、放射性比活度、铀系和钍系平衡状况以及放射性元素含量；测定了我国海南万宁矿区锆英砂的组成及放射性。

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The radiochemical purity of the product purified by HPLC is more than 98%, and its specific activity is 0.654 TBq/ g.

所得产物经HPLC纯化后放化纯度>98%，其比活度达0.654TBq/g。

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Δ NSak was purified by two step ion exchange chromatography. The purity was over 95% and the specific activity of Δ NSak was 9 × 10 4 IU/ mg.

工程菌发酵、压榨后，经两步离子交换层析分离纯化，可获纯度达95%以上、比活性为9.0×104IU／mg的ΔNSak，与野生型Sak相似。

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By SDS-PAGE, thin layer scanner and activity assay, the purity reached 95%, specific activity was 1. 91 × 109 IU/ g, and the activity yield was 59. 28%.

经SDS－PAGE、薄层扫描及活性测定表明，纯度为95%，比活性为1.91×109IU／g，活性回收率为59.28%。

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The general physical symptoms were observed and loose stools rate, body mass, spleen index, thoracic gland index, serum D-xylose content, serum amylase activity, and serum succinate dehydrogenase specific activity of each group were detected.

观察各组大鼠一般症状，测定稀便率、体质量、脾脏指数、胸腺指数、血清D-木糖含量、血清淀粉酶活性、血清琥珀酸脱氢酶比活性等指标。

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After culturing for 40 h, 54 U/ mg dry cell weight of specific activity was produced.

YL-1培养40h后可获得54U/mg的干细胞比活力。

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The most often used units of specific activity ( abbreviated Sp. Act . ) are curies / mole.

最常用的比活性 ( 符号是Sp. Act ) 单位是居里/克分子.

词典精选例句

The radiochemical purity of the product purified by HPLC is greater than 98%, and its specific activity is 738 GBq/ mmol. The quality of the product could meet the demands of the relevant research on medicine or pharmacology.

所得产物经高效液相色谱纯化后，放射化学纯度大于98%，放射性比活度达738GBq/mmol，各项指标能满足医、药学相关研究的要求。

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The head of the silkworm contained the highest specific activity, and followed by fat body and midgut.

其中，头部的比活力最高，其次是脂肪体和中肠。

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In comparison with the sham group, the specific activity of succinic dehydro-genase was slightly decreased and the activities of cytochrome b and c+ c1 were decreased significantly 30 min after burn.

烫伤后30min组与假处理组相比，琥珀酸呼吸链中，琥珀酸脱氢酶比活力有降低趋势，差异接近显著；细胞色素b和细胞色素C+C I的还原活力均降低，差异十分显著。

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Results The UV and HPLC spectrum of the synthesized 3 H higenamine were identical with that of the higenamine standard, the radiochemical purity was more than 98% and the specific activity was 370 GBq/ mmol.

结果合成的3H去甲乌药碱UV和HPLC图谱鉴定与去甲乌药碱标准品一致，放化纯>98%，比活度>370GBq mmol。

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Copper/ zinc superoxide dismutase with high specific activity was prepared from fresh chinese tea leaves.

从茶叶酶学研究的特殊性出发，设计了有效的纯化路线，并以茶树鲜叶为材料，首次制备出高比活性茶叶铜锌超氧化物歧化酶。

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And to social science historians who equate their activity with specific techniques.

后者以为历史的研究是具体方法的研究.

网络文摘精选

The influence of salt on the activity and thermal stability of HPL followed hofmeister series. The hydrophobic interaction, electric interaction and specific ion force was the major contribution to the effect.

盐对HPL酶活性和酶热稳定性的影响都遵循霍夫密斯特序列，疏水相互作用力、静电相互作用力和特异性离子分散力对于作用效果起主要贡献作用。

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After purification, the specific activity of LDH was enhanced to 1210.7 U/ mg with 30.2% total recovery.

粗酶液经分离纯化得到成品酶液，比酶活提高了51.7倍，达到1210.7U/mg，总收率为30.2%。

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Because of the higher specific activity and the better optimal temperature and pH, which are nearly in accordance with the physicochemical conditions of the intestines of monogastric animals, the recombinant a-galactosidase is more advantageous to be used in animal feed additive than the native one.

重组α-半乳糖苷酶的比活性较高，最适温度与最适pH接近动物肠道的生理条件，故重组的α-半乳糖苷酶更有利于作为动物饲料添加剂。

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This study showed that the acl gene that from Rhodotorula glutinis and other oleaginous yeasts can be regulated by using genetic engineering to increase the ACL specific activity and enhance the fatty acid synthesis.

本研究表明粘红酵母和斯达酵母等油脂酵母类的acl基因可以利用基因工程手段对其表达量进行调控，提高ACL酶活力，增强脂肪酸的合成。

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The eluted OGT had a specific enzymatic activity of 0.88 nmol · min-1· mg-1 OGT.

结论:在这两个表达系统中制备重组OGT各有利弊.

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The specific activity is 740 TBq/ mol, and the radiochemical purity is over 95%.

产品放射性比活度为740TBq／mol，放射化学纯度＞95%。

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But what if you don't have a specific passion that lends itself to a group activity?

可是，如果你没有一个适宜群体活动的明确兴趣爱好呢？

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The studying results indicated that the leaves and buds of on-year tree generally had higher specific activity of α-amylase, lower specific activity of phosphatase and peroxidase, and lower content of soluble protein than those of off-year tree.

结果表明，大年结果树叶片和芽的α-淀粉酶活性总体上高于小年结果树，但磷酸酯酶活性、过氧化物酶活性和可溶性蛋白质含量总体上低于小年结果树。

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HPLC-NP had also hemagglutination activity, which was inhibited by specific antibody and hemagglutination inhibition antibody no neutralization antibody have been detected in its immunosera.

HPLC纯化NP仍具有血凝活性，并可被特异性抗体所抑制，将其免疫小鼠后，血清中可检出血凝抑制抗体，但无中和抗体。

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OBJECTIVE To obtain the recombinant human tissue-type plasminogen activator mutant ( reteplase, r-PA) with high purity and high specific activity.

目的获得具有高纯度、高生物活性的重组人组织型纤溶酶原激活剂改构体（瑞替普酶，reteplase，r-PA）。

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