生物合成

Meanwhile, they are vital in descendiblity, aberrance, develop of organism and also in compound of the protein molecules.

核酸在生物的遗传变异、生长发育以及蛋白质合成中起着重要的作用。

Furthermore, a series of triterpene glycosides that composed of oleanolic acid, ursolic acid and glucosamine oligosaccharides were synthesized, and their structures were determined.

本文还以具有良好生物活性的五环三萜类的化合物齐墩果酸与熊果酸作为苷元，完成了一系列氨基葡萄糖及其寡糖三萜皂苷的合成和结构确定工作，为测试其生物活性、研究构效关系奠定了基础。

Due to the gradually in-depth study on gene, biological fermentation technology and strain, as well as the resistance to the chemical synthetic product, the bio-engineering fermentation technology achieves unparallel development and is widely applied in the fields of medicine, food and chemical engineering.

由于人类对基因、生物发酵技术、菌种研究的逐步深入，以及人们对化工合成产品的抵制，生物工程发酵技术得到了空前的发展，并在医药、食品、化工领域得到了广泛的应用。

Glycerol as a by-product is yielded at about 10% of biodiesel during the process of biodiesel production .How to convert glycerol has become a common problem which has to be resolved if considering large amount of biodiesel production. 1,3-propanediol is a valuable chemical material and especially it could be copolymerizes with terephthalic acid to form polytrimethylene terephthalate, which has aroused people's interesting.

在生物柴油的生产过程中，最高可得到约10%的副产物甘油，副产物甘油的去向将成为生物柴油大规模产业化发展所面临的严峻问题。1，3-丙二醇是一种重要的化工原料，作为合成新型聚酯PTT的原料，1，3-丙二醇已引起人们的广泛关注。

The nucleic acid is an important kind of germ plasma which is not lack in life and studied widely in chemistry,biology,medicine,etc.

核酸是生物体中最重要的一类生物大分子，是遗传信息的载体，控制着蛋白质的合成和生物体细胞的机能[1]。

Secondly, the experimental research advances of cyclopeptide nanotubes using as the templets to produce biologic sensors by synthesis with functional nanomaterials such as electronic, optical and magnetic ones.

进而介绍了环肽纳米管用作生物传感器模板，与功能性纳米材料合成制备生物传感器的实验研究进展，接着介绍了环肽纳米管作为药物或药物载体潜在的应用前景，特别是在某些抗菌和抗感染药物开发设计中的应用以及环肽在不同极性的环境中自组装过程微观机制的MD模拟研究进展，最后介绍了环肽纳米管作为模板，制备磁性、电性纳米材料方面的实验和理论研究进展。

Chemistry is concerned with the physical and chemical properties, composition and structure of all living and non-living materials, and how we synthesise such materials and modify them for their safe and beneficial use in our modern lives.

化学关注的是物理性质和化学性质、生物和非生物的组成及构造、以及我们如何人工合成这些材料让他们变的安全和在生活中有益的使用。

The present development,applied situation and production technology of bio-diesel in China and aboard were reviewed in this paper.

文章综述了国内外生物柴油发展及应用现状、生产技术进展以及我国应用和发展前景，并提出了将农作物秸秆作为原料合成生物柴油的思想。

RNA. American biochemists Kornberg with the United States biochemists Ochoa synthetic method used was obtained DNA and RNA.

美国生物化学家科恩伯格与美国生物化学家奥乔亚用人工合成的方法制得了DNA和

To study the effects on the body of animals after incorporation of 3H-TdR and its mechanism, the laws of distribution A retention and absorbed dose in blood , thymus, spleen, femur, heart, lung,kidney, liver, brain , spermary , small intestine and muscle were detected by liquid scintillation counter after 3H-TdR was injected into the tail vein of mouse; the process of dynamic incorporation of in the lymphocytic cell nucleus of blood , thymus , spleen and the nucleus of femur was monitored; the absorbed dose in the cell nucleus was estimated; the influence to RNA"s synthesizing and cell"s survival was observed using the technology of CLSM; A segment of Egr-1 gene was cloned with reverse transcriptase- polymerase chained reaction, the influence to the expression of Egr-1 gene in the spleen cells was observed.

为了探讨有机结合氚内污染对生物机体的影响及其作用机理，本课题应用均相液体闪烁测量技术研究了氚标记胸腺嘧啶核苷(~3H-TdR)经尾静脉注入小鼠机体后，在血液、脑、胸腺、心脏、肺脏、肝脏、脾脏、肾脏、小肠、睾丸、肌肉和股骨共12种组织器官的生物动力学分布规律及其吸收剂量；应用纸片法液体闪烁测量技术研究了~3H-TdR内污染在外周血、胸腺和脾脏淋巴细胞及骨髓细胞的动态滞留规律，估算了细胞核的吸收剂量；应用共聚焦显微镜观察了~3H-TdR内污染对脾细胞核酸合成及其存活率的作用，应用反转录PCR技术研究了~3H-TdR内污染对脾细胞早期生长反应基因-1(Egr-1)转录表达的影响。

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％。