生物化学

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。

Zebra fish is a very good sample for studing low-level chemiluminescence from Biological system Studies were carried out to deterimine the relationship between concentrations of Benzene.

Zebra鱼是研究生物系统低水平化学发光的很好材料。

Be able to ionization happened in molecule or atom in atmosphere under machinery , brightness , static electricity , chemistry or biological energy source effect, whose outer layer electron abjunction atomic nucleus, these lose the electronic molecule or the atom is called the positive ion or the positive ion with positive charge , us.

大气中的分子或原子在机械、光、静电、化学或生物能作用下能够发生电离，其外层电子脱离原子核，这些失去电子的分子或原子带有正电荷，我们称为正离子或阳离子。

Acetoin is one of the widely-used flavors,which is mainly chemically synthesized and produced by microbe.

乙偶姻是一种应用广泛的食用香料，目前主要通过化学法合成和生物发酵法制备。

At the place of-30 cm to-50 cm water table depth,soil salinization and alkalization had the highe...

不同水深梯度影响了土壤水分、空气和土壤的生物、物理、化学过程，引起植被生长环境中土壤水分、盐碱化程度的改变，进而对植被空间分布和植被生态特征产生影响。

Fullerene is the third allotropic form of carbon besides diamond and graphite, C60 is the representative in the fullerenes.

富勒烯是继石墨，金刚石后出现的碳的第三种同素异形体，其中C60是最典型的一种，由于其独特的结构和性能，使得它在生物，化学，材料，纳米科学等领域显示了巨大的应用潜力。

Function of 1 bowel protective screen and protective screen of its characteristic bowel include protective screen of alvine mucous membrane, chemical protective screen, biology protective screen and immune protective screen, its are main the function is to resist the bacterium inside alvine antrum and toxin enter system inside.

本文现就化疗药物对肠屏障功能的损伤机制及其防治进展作一综述。1肠屏障功能及其特征肠屏障包括肠黏膜屏障、化学屏障、生物屏障和免疫屏障，其主要功能是抵御肠腔内细菌及毒素进入体内。

In this paper, based on the analysis of the effects of the structure of UASB reactors and the processes of reactions on corrosion, the corrosion mechanism is discussed, and three measures to prevent the corrosion of the UASB reactor are presented, I.e., improvement of the anticor rosion design, application of anticorrosion materials and preservative treatment of the equipment.

由于上流式厌氧污泥床UASB内发生的反应主要属于化学过程和生物过程，因此UASB反应器内壁极易发生腐蚀，从而影响反应效果，降低设备使用寿命，增加维护费用在分析了上流式厌氧污泥床反应器的结构与工艺对腐蚀的作用的基础上，讨论了腐蚀机理，提出了应在改进防腐设计、采用耐腐蚀材料和对设备进行防腐处理等3个方面采取措施，从而防止UASB反应器内的腐蚀现象

According to the spetial conformational analysis and physical/chemical property analysis and by the aid of computer it can make molecular design of mimic polypeptide and designs the polypeptide molecule with activity for neutralizing LPS, and adopts the solid phase polypeptide chemical synthesis method to synthesize antibacterial/antiendotoxin mimic peptide with total or partial BPI bio-function.

本发明公开了通过计算机模拟设计、人工合成的66个抗菌／抗内毒素模拟肽，根据对BPIN端三个LOOP区的空间构象分析及物理化学性质分析，在计算机辅助下进行模拟多肽的分子设计，设计出具有中和LPS活性的多肽分子，用固相多肽化学合成方法合成抗菌／抗内毒素模拟肽，本发明的抗菌／抗内毒素模拟肽具有全部或部分BPI的生物功能，可以用于治疗G－细菌感染、人内毒素血症，具有分子量小、可以稳定重复生产的特点。

According to the results of quantum chemistry calculation and the present research status in the relationship between the structures and the functions of DT, the El 54 in DT catalyzing domain was mutated to aspartic acid and arginine in order to study the effects of the alteration on the biological activities.

在量子化学计算的基础上，结合目前关于白喉毒素结构与功能的研究状况，选择把白喉毒素催化区的第154位谷氨酸分别突变为天冬氨酸和精氨酸，研究此处电荷性质的改变对生物活性的影响。

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。