查询词典 mechanism

The tryptophan residues play important roles in DNA photoreactivation catalyzed by CPD photolyases. We have investigated the action mechanism concerning Trp in DNA photoreactivation, and obtained the results as follows: 1 We proposed a mechanism of photosensitized splitting of CPDs by Trp and Trp-containing peptides. 2 Quantum yields of splitting of the model compounds that a Trp linked covalently a CPD were obtained under 290 nm light in various solvents, these values changing with solvent, range from 0.01 to 0.5. 3 Utilizing pulse radiolysis technique, splitting processes were observed in aqueous solution of the CPDs with hydrated electron and some oxidative species (such as hydroxyl radical, bromic radical and azide radical), and obtained their rate constants. In the case of interaction between CPD and hydrated electron, splitting of the CPD anion, and pyrimidine anion transfer an electron to FAD or Rf, were observed. The process rate was slower one order more than that in photolyase. Minor, but highly mutagenic UV-light-induced lesions are (6-4) photoproducts, which are repaired by (6-4) photolyases. These enzymes, discovered in 1993, are not well characterized and their mechanism is still under investigation.

我们研究它的作用机理，获得以下结果：1）建立了色氨酸及其肽对嘧啶二聚体光敏化裂解的直接修复作用机理模型；2）获得了色氨酸共价键连接于嘧啶二聚体的化合物在多种溶剂中290nm光辐照裂解的量子效率，其值随溶剂而变化，范围在0.01-0.5；3）运用脉冲辐解观察到嘧啶二聚体与水合电子和一些氧化性的自由基作用裂解过程，得到相应速率常数；对二聚体与水合电子作用发生裂解以及向FAD返还电子的过程进行了体外模拟；4）（6-4）光解酶的作用机理中一个关键假定是氧杂环丁烷中间体在接受电子后能自发裂解，恢复二嘧啶的结构。

Author basis of content and function different, will embezzle economic mechanism cent to be instead preventive mechanism of economic mechanism, castigatory sex economy.

作者根据内容与功能的不同，将反贪污经济机制分为预防性经济机制、惩罚性经济机制。

The principle of outside installation mechanism in laser tracking measurement system is introduced and a spherical mechanism method is adopted to design the 2D tracking circumrotatory mechanism according thedevelopment of laser tracking measurement system in global.

作者根据国内外激光跟踪测量系统发展情况，介绍了外置式激光跟踪测距系统的原理，采用球形跟踪伺服装置的设计思想，设计了两维旋转跟踪伺服装置。

These results suggest that:(1) kin recognition is primary mechanism of inbreeding avoidance in estrus female root voles;(2) memory of a siblings scent may be a mechanism of sibling recognition by estrus females, and familiarity after weaning can reinforce permanence of this memory;(3) post coital familiarity may be a mechanism of maintaining inbreeding avoidance in female root voles.

故认为：断奶后嗅觉识别持久力是发情雌性根田鼠亲属识别的机制，亲属识别是最初发情的雌性根田鼠配偶选择中近交回避的首要途径和机制，熟悉性是维持雌性根田鼠配偶选择实现近交回避的机制和特征。

This chapter, on the basis of analyzing the basic function of disciplinal mechanism of faith-breaking, puts forth the basic principles implemented for establishment of disciplinal mechanism of faith-breaking and puts forth the system designing of disciplinal mechanism of faith-breaking from such aspects as credit early warning, punishment on faith-breaking, encouragement for faith-keeping, credit restoration etc., finally it discusses how to set up the civil, administrative and special legal liabilities for discipline of faith-breaking.

本章在对失信惩戒机制的概念和特征进行解读的基础上，通过对失信惩戒国外经验的分析，提出在征信的基础上建立信用预警、失信处罚、守信激励、严重失信淘汰以及信用修复的失信惩戒法律措施，最后探讨了如何构造失信惩戒的民事、行政、刑事及特殊法律责任。

At least one single roller type multicolor single-side printing device or one perfecting machine device is installed in the machine frame and the power mechanism brings the roller and the ductor mechanism into operation by the drive mechanism.

滚筒式单筒多色印刷装置，含有滚筒，油墨辊机构，定位机架，在一个滚筒周边设置至少有两种不同颜色的油墨辊机构，在滚筒上或滚筒一端面上设有油墨分配机构，所述油墨辊机构彼此之间的传墨次序受油墨分配机构控制。

Therefore to study the molecule regulation mechanism of development and maturation of condylar cartilage in embryo, can not only discover the mechanism of its physiological rebuilding and restoration to set up the academic base for related treatment in clinic, but possiblely supply new treatment methods for trauma and destruction to articular cartilage. Histological and immunohistochemistry methods have been used to state the feature of development of the mandibular condylar cartilage, and molecule mechanism of its endochondral ossification.

目前对四肢关节软骨、生长板软骨的发生及再生修复的研究较为深入，而髁突软骨的发生、生理改建及再生修复机制的研究尚处于起步阶段，因此研究胚胎期髁突软骨发育及形成的分子调控机制，可望揭示其生理性改建及损伤修复的机制，为临床有关治疗奠定理论基础，并可能为关节软骨的损伤及破坏提供新的治疗手段。

The hypermethylation of 5 CpG in promoter region serves as a mechanism of the inactivation of RASSF1A gene. This mechanism has been widely confirmed in multiple tumorgenesis including prostate carcinoma cell line DU145. Object Our study is to disclose the epigenic mechanism of the carcinogenesis of prostate cancer. Including: 1. We use demethylation agents in combination with chemotherapeutic drugs, to disclose whether demethylation agents can enhance the anticancer effect of chemotherapeutic drugs. 2. to study whether demethylation drugs can affect the methylation level of RASSF1A gene in.

目的 本研究旨在探讨前列腺癌的表遗传学发生发展机制，包括： 1、甲基化抑制剂与多种化疗药物联合应用，探讨二者间的协同作用，增强化疗药物疗效； 2、体外应用甲基化抑制剂对前列腺癌细胞DU145的RASSF1A基因甲基化水平的影响； 3、体外应用甲基化抑制剂对前列腺癌细胞DU145的RASSF1A基因及蛋白表达的影响，以期为进一步深入探索通过改变抑癌基因的甲基化而为前列腺癌发生机制和基因治疗提供有意义的数据和理论依据。

The problem in the case is studied and deduced, and the way of solving problem can be discussed. Author think its motivation mechanism of Japanese joint venture in Shanghai needs to advance. The Japannish motivation mechanism is not suitable for the firm in China. But its ideas of task richness, duty expandedness, humanity welfare system, paying more attention to training etc will can be reference. It is necessary to use availability motivation mechanism according to condition in China. For example, the marketable salary system, impersonal appraising system and so on.

作者的结论是：在沪日资企业的激励机制亟待充实和提高，原来的以日本式激励机制为参考蓝本的方法已不适合中国的现状，但其工作丰富化、工作扩大化的方法，提供人性化的福利保障的做法，以及避免使员工感到和企业之间是&劳动力买卖&关系的想法，重视培训的初衷等都是有可取的地方，希望能够在新的激励理论的指导下，根据中国的实际情况，推出诸如市场化工资体系、客观评价体系等实用的激励方法。

To improve the cultivating level of innovational talents, teachers universities need to establish quality evaluation mechanism on elective course of cultural quality-education of undergraduates, the quality advancement mechanism on thesis of undergraduates, and the imbursement and encouragement mechanism on science and technology actions and scientific research items of undergraduates.

高师院校提高创新人才培养水平需要建立本科生文化素质教育选修课的质量评价机制，本科生毕业论文的质量提升机制，本科生科技活动和科研项目资助与奖励机制。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。