生物活性的

Finally, 30 of actinomycosis of the initial screening and re-screening, to find the biological activity of strain, strain through 16SrDNA activity and biological characteristics of the determination of the detection, a preliminary to determine their taxonomic status.

最后通过对30株放线菌的初步筛选和再次筛选，找到有生物活性的菌株，通过对活性菌株的16SrDNA的测定和生物学特征的检测，初步确定其分类地位。

It is very difficult to extract active RNA from Aspergillus niger because of the existance of complex cell wall and endo-Rnase activity.

由于复杂的细胞壁和内源酶活性的存在，所以要从丝状真菌中提取和纯化出有生物活性的RNA比较困难。

Seeking secondary metabolites with biological activity to the harmful organisms from plants, after separation, depuration or taking as the template to the new artificial synthetic pesticide has become the classic of the contemporary pesticide research.

从植物中寻找对有害生物有生物活性的次生代谢物，经分离、提纯或作为人工合成新农药品种的模板已成为当代农药研究的经典。

As one of the main bioactive compositions of the Chinese herbs and perfume plants, farnesol is more and more widely applied in pharmaceuticals, agrochemicals, cosmetics, and domestic chemicals, having good prospects.

金合欢醇是中草药植物的重要活性成分之一，也是一些重要香料植物精油中的主要香料成分之一，因此，在医药、农药、化妆品和日用化工等需要其生物活性的方面已经得到较多应用，并具有较好的前景。

Nitrogenous heterocyclic compounds, which has a good deal of chemical reactions and chemical structures, are very important in the field of application, medicine, biology, medicine, pesticides, and other fields.

含氮杂环是一类具有重要应用价值和良好生物活性的化合物，它们不仅具有丰富的反应化学和结构化学，并且在生物、医药、农药等领域具有重要的应用价值。

Citri had been selected by ribosome display in previous research. In order to express the scFvs with bio-activity efficiently, the genes of the selected scFvs were transformed into Escherichia coli HB2151 for expressing resoluble antibodies. The expression levels of scFvs were detected by dot blotting and Western blotting, and the expressed scFvs were purified by affinity chromatography, and then the activity of the purified scFvs was tested by enzyme-linked immunosorbent assay .

Citri， Xac高亲和力单链抗体(Single chain variable fragment， scFv)GX13、GX44和GX95，为高效表达具有生物活性的单链抗体，本研究将前期筛选的高亲和力单链抗体基因转入大肠杆菌HB2151中进行可溶性表达，点印迹和Western印迹检测可溶性单链抗体的表达水平，亲和层析纯化表达的单链抗体，酶联免疫吸附法检测纯化单链抗体的抗原结合活性。

The purpose of this study is to reveal the change characteristics of biological properties of sandy soil and its development trend under the establishment of C. microphylla plantations in flowing sand dune. With semi-moving sand dune and natural community as controls, the activities of phosphomonoesterase, saccharase, protease, urease, dehydrogenase and the Contents of microbial biomass C, N, P of the soil in an age sequence (5-, 10-, 22-year) of C.

为探讨采用小叶锦鸡儿固定流沙后，土壤生物活性的变化特点和发展趋势，选取5、10、22年生小叶锦鸡儿人工固沙群落为对象，以半流动沙丘和天然群落为对照，研究了人工固沙群落发育过程中土壤磷酸单酯酶、蔗糖酶、蛋白酶、脲酶、脱氢酶的活性和微生物生物量C、N、P质量分数的变化特征。

By spraying polyamines synthesis inhibitors, D-Arg, MGBG (Methylglyoxal bis-guanylhydrazone) and CHA at various concentrations to panicles and flag leaves of indica rice Jinlingxiangnuo (a higher polyamine rice variety) at heading, flowering and grain filling stages, changes in contents and components of PAs in rice grains after harvest were investigated.

多胺(polyamines， PAs)是生物体代谢过程中产生的具有生物活性的低分子量脂肪族含氮碱，是调控生物体生长发育的重要活性物质[1]。PAs在生长发育、细胞增殖、肿瘤发生、编程性细胞死亡(programmed cell death， PCD)、免疫反应及食物过敏症等方面具有重要调节作用[2~6]。

Effect of oil pollution on marine organism ;2. Recent progress on the studies of bioactive polyhydroxy sterols and their sapogenins from marine organism s are reviewed.

综述了近几年来对海洋生物中具有生物活性的多羟基甾醇及其皂苷研究的新进展，报道了以新化合物为主的 80个具有生理活性化合物的结构，并部分地阐述了其构效关

The existence of natural toxins is a fundamental phenomenon of life, it is a set of specific bioactive chemical substance, which evolved through a long period from nature. Natural toxins show multiplicities in biogenic source, chemical structure, biological function and active mechanism.

生物毒素的存在是一种重要的生命现象，它是自然生物界长期进化发展的具有特殊生物活性的化学产物，而且在生源、化学、功能、作用机制等方面表现出多重多样性。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。