生物

The importance of biodiversity to mankind is obvious. So the problem of biodiversity diminishment causes people′s common concern increasingly.

生物多样性对于人类的重要性是不言而喻的，于是生物多样性丧失问题日益引起人们的关注。

Three 3 biofilter models constructed with the functional strains of Xhhh and Fhhh and the native strain NJ to degrade BaP existing in the source of dinking water from Yangtze River was conducted in this research.

以跨界原生质体融合菌株Fhhh和Xhhh，及土著细菌NJ为出发菌株，建立3个生物滤池模型，探索研究深度降解长江饮用水源中3、4-苯并芘的环境生物技术。

All of the traits suggest that dinoflagellate maybe is the intermediate species between prokaryotes and eukaryotes.

寇氏隐甲藻细胞超微结构的特殊性表明，这个物种可能是原核生物向真核生物进化的中间过渡类型。

BACKGROUND: Muscle-derived stem cells have some problems in purification, amplification and directional differentiation during in vitro culture. Basic fibroblast growth factor as a membrane of bioactive factor has been paid great attention, due to its biological activity.

背景：肌源性干细胞在体外培养过程中存在纯化、扩增、定向分化等难题，碱性成纤维细胞生长因子作为生物活性因子的一员，因其生物活性的多效性而备受关注。

In this thesis, researches have been made on the structure of membrane protein and the process of protein aggregation and disaggregation by employing the two advantages of atomic force microscopy : nanometer resolution in liquids and in situ observation following a biological dynamical process during a long period. This thesis consists of four parts.

本论文利用原子力显微镜能够在溶液中观察生物大分子的结构并可以达到纳米级分辨率和能够在近生理的环境中对生物样品的活性过程进行跟踪观察的两大优势分别对膜蛋白的结构和蛋白质积聚、解聚的过程进行了研究。

Aimed at the biochemical technology of sewage treatment by biological rotating disk,a water circulating wheel has been designed to improve the treatment efficiency of biological rotating disk, and to develope an integrative installation technology.

针对生物转盘污水处理工艺，研究设计出能提高生物转盘处理效率的循环水轮的结构及一体化的安装工艺形式，以非能源的方式提高了系统耐冲击负荷能力和去除效率，并通过示范工程进行验证，充分肯定了该技术的高效性和实用性。

Superoxide Dismutases are ubiquitously expressed antioxidant enzyme in aerobic organisms and catalyze dismutation of superoxide anion to hydrogen and molecular oxygen,the first step in active oxygen-scavenging systems.

超氧化物歧化酶(superoxide dismutase，SOD)在需氧原核生物和真核生物中广泛存在，是活性氧清除系统中第一个发挥作用的抗氧化酶。

This paper gives out the definition of Biometric Image Quality and image distance function and so on.

本文首先给出了生物特征图像质量等的一系列定义，并通过这些定义将生物特征识别进行简化。

In this study, the technology of 3D finite element was applied, and the purpose of this study is meant to guide the clinical use of distractor.

本研究试图通过有限元法，了解影响种植牵张初期生物力学环境的多种因素，为种植牵张临床提供生物力学方面的理论依据。

Hydroxylamine hydrochloride (NH2OH·HCl) was selected to extract manganese oxides, and sodium dithionite (Na2S2O4) was used to separate manganese oxides and iron oxides. Optimum extraction conditions were determined by changing each of the experimental condition.

参考人工培养生物膜的萃取方法，分别用NH2OH·HCl和Na2S2O4为萃取剂选择性萃取生物膜上的锰氧化物和铁、锰氧化物，通过改变各萃取条件，考察萃取效果，确定最佳条件。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。