生物活性的

The thesis aims at the studies on the synthesis of polyol dihydroagarofuran sesquiterpenes, the synthesis of isodaucane sesquiterpene and the biological activities of sesquiterpenes.

本论文以α--山道年为原料，对多羟基二氢沉香呋喃倍半萜的合成，Isodaucane倍半萜的合成和部分一些化合物的生物活性进行了研究。

SIP, which play important roles in diverse biological processes such as cell proliferation, migration and survival, is produced by metabolism of the membrane phospholipid sphingomyelin.

鞘氨醇-1-磷酸盐(S1P)是质膜鞘磷脂的代谢产物，也是重要的生物活性物质，可调节细胞的增殖、迁移、分化、死亡等。

Methods: NGF was prepared from mouse submaxillary glands by the way of elution with CM 52 column. The molecular weight and purification of NGF were detected by SDS-PAGE polyacrylamide gel electrophoresis.

以小鼠领下腺为原料，採用CM52多次洗脱的力法分离神经生长因子，SDS-PAGE电泳检测NGF的分子品质和纯度，採用鸡胚背根神经节培养方法检测NGF的生物活性。

Purified degree of flavonoids was 78. 21 %. Purification of terpene lactones was improved without losing activity.

经分析检测，黄酮类化合物产品的纯度达到78.21％，萜内酯类化合物的纯度达到12.64％，且保持了较好的生物活性。

A new, stereo-controlled method of aldehyde group synthesis is summarized, which is used to synthesize aldehyde group by introducing thiazole ring and has a wide appreciation for bio-activated compounds synthesis.

摘要本文综述了一种新型可立体控制的醛基合成方法––利用唑环引入醛基的方法以及它在具有生物活性物质合成中的应用。

Because vegetation sourced photosensitizers are unstable, low concentration in plant and insignificant effect, we put our emphasis on a kind of chemical photosensitizers - xanthene.

由于植物源光敏化合物不稳定、含量低、效果差等一系列固有的缺陷，本论文着重研究了一类化学合成的光敏化合物——呫吨类化合物的光敏生物活性、光降解及开发利用。

Otherwise, an intermediary allylamine deposition was covalently linked to the oxide layer by glow discharge, the covalent binding of bioactive protein to the free terminal NH2 groups using glutaraldehyde as a coupling agent was followed.

并利用丙烯胺的电浆处理在钛金属表面键结上胺基(-NH2)的官能基，之后再以交链剂戊二醛来固定生物活性胶原蛋白於低温电浆处理后的钛金属表面。

Here we summarize the progress of salmon calcitonin's heterogenous expression in prokaryotic and eukaryotic expression systems as well as the amidation of C-terminal. Both the biological activity of salmon calcitonin and the biologic expression system can be improved by genetic engineering techniques.

本文综述了鲑鱼降钙素基因在大肠杆菌、链霉菌、乳酸杆菌和蓝藻等原核细胞，在酵母、昆虫、动植物等真核细胞中异源表达的研究进展，以及通过基因工程的方法能够改进生物表达系统，提高鲑鱼降钙素活性的动态。

As novel sources of potential medicine, a number of metabolites isolated from endophytic fungi have been proved to have anticancer bioactivity.

作为新型抗癌药物的潜在来源，众多从植物内生真菌分离的代谢产物被证明具有抗肿瘤的生物活性。

It concluded:(1) the fifteen compounds, which were supposed to affect Pseudoperonospopa cubensis and Botrytis cinera of leaf cuttings of cucumber, Rhizoctonia solani of rice and Erysiphe graminis of wheat seedlinds, were tested indoors. Some of the compounds showed highly fungicidal activities.

115个系列化合物在室内分别对离体叶黄瓜霜霉病、离体叶黄瓜灰霉病、水稻纹枯病和苗期小麦白粉病的致病菌进行了化合物的普筛药效试验，其中，有些化合物显示出较高的杀菌生物活性。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。