生物化学

The study is possible for experimenters to offer theoretic direction while developing new type quercetin metal complex with higher activity antioxidants. At the same time, the study offer theoretical foundation that quercetin can be used as a kind of antidote for superfluous meatal ion in body.

本文通过对槲皮素金属配合物的合成、生物活性及其量子化学的较深入地研究，为进一步寻找高效、低毒的抗氧化性槲皮素配合物提供了一定的参考价值，同时为槲皮素可作为体内过多金属离子的解毒剂提供了依据。

Methods Both in malformed embryos induced by excess retinoid acid and normal KM mice, expressions of lectin receptors of WGA, RCA and ECL in the epithelium of palatal shelves and the mesenchyma were determined by affinity histochemistry using biotin-marked corresponding lectins.

以生物素标记的凝集素受体WGA、RCA和ECL为探针，应用亲和细胞组织化学染色方法检测上述3种凝集素受体在RA致畸鼠胚和相应对照组鼠胚腭板上皮及其间充质的分布状况和变化规律。

Firstly, the methanolysis of different oils by alkali-catalysis and lipase-catalysis werestudied.

首先，本文分别采用酶法和化学法对不同来源的油脂和甲醇转酯化反应进行了考察和优化，对不同催化剂催化生产生物柴油进行了对比。

In this paper, we review recent advances on mucilaginous seeds, with emphasis on （1） chemical composition of seed mucilage;（2） morphological characteristics of mucilaginous seed coats and mucilage;（3） biochemical processes in and genetic regulation of differentiation of mucilage-secreting cells, mucilage biosynthesis and mucilage secretion in the seed coat; and （4） ecological significance of seed mucilage.

为此，在广泛查阅相关文献的基础上，该文综合分析了国内外种子粘液的研究进展，并重点探讨了以下几方面问题：（1）种子粘液的化学成分：（2）粘液及粘液种皮的形态特征：（3）粘液细胞分化与粘液生物合成的细胞学及基因调控机制以及粘液的释放方式：（4）种子粘液的生态学意义。

The macrocyclic polyamines are a kind of excellent ligands and have a substantially high binding affinity with transition metal ions. Macrocyclic polyamine metal complexes as enzyme models are widely used in chemical biology, medicine and gene therapy. 1, 4, 7, 10-tetrazacyclododecane is a representative macrocyclic polyamines compound and shows high binding affinity with transition metal ions, such as Zn, Cu and Co. Their metal complexes especially multinuclear complexes were widely used in DNA, RNA recognition.

大环多胺化合物是一类性质独特的优秀配体，具有良好的金属配位能力，其金属配合物作为人工酶模型广泛应用于核酸结构及功能研究、基因表达与调控、抗癌药物的研制等生物、化学和医学领域。1，4，7，10-四氮杂十二烷是典型的大环多胺化合物，对过渡金属离子Zn， Cu and Co有良好的配位能力，这些金属配合物特别是多核金属配合物被广泛应用于DNA识别中。

It shows that it is noncorrelation between chemical availability and biological availability, it is indispensable to search new method for the right solution to the problem.

说明现有的化学有效性测定方法和生物有效性间的相关性较弱，有必要探求新的测试方法。

PartⅡStudy on the chemical constituents of Nymphaea candidaNymphaea candida Presl is a herbaceous hydrophyte native to the southern Xinjiang in China,and the flowers of N.candida has been used as a folk medicine for head pains,common cold,cough,hepatitis and hypertension.

第二部分睡莲花化学成分及生物活性研究睡莲花Nymphaea candida Presl为睡莲科睡莲属多年生水生草本植物雪白睡莲的干燥花蕾，主要分布于我国新疆的南部地区，在维吾尔族民间用于热症引起的头痛、热感咳嗽及小儿急、慢惊风等病症的治疗。

From its introduction, oncological chemotherapy has been encumbered by its poor selectivity because most antiproliferative drugs are toxic not only to tumor cells but also to important populations of the body's non-neoplastic cells.

由于它的介绍， oncological化学疗法由它的劣质的选择性妨害了，大多数antiproliferative 药不仅对瘤细胞而且对身体非新生物的细胞的重要的人口是有毒的。

The present review is emphasized on making a systematic summary on the relationship between the structure and chemical and biochemical activity of new organobismuth compounds from a viewpoint of molecular level.

文中着重从分子水平阐述了新型有机铋化合物的结构与其化学和生物活性之间的关系。

This review on organobismuth chemistry is carried out as the following four aspects:(1) the molecular structure characteristics and synthesis of new organobismuth compounds;(2) as reagents for cross-coupling, oxidation, arylation, and other reactions;(3) as catalysts for organic synthesis;(4) as medicines for the treatment of ulcers, anti-tumor and radio-therapy, etc.

本文回顾了近10多年来有机铋化学的研究状况，主要从以下4个方面进行综述：(1)新型有机铋化合物的合成途径与结构特征；(2)有机铋化合物作为交联偶合、氧化、芳基化和其它反应的试剂；(3)作为催化剂；(4)作为生物医药用于溃疡、肿瘤和放射治疗等。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。