查询词典 conjugative

Avermtilis constructed with the conjugative cosmids vector pHAQ31 covered each genome 73% and 62% respectively.

coelicolor的有序排列的基因组文库，覆盖率分别为73％和62％。

According to the 13CNMR chemical shifts of substituted benzene, conjugative effect parameter and inductive effect parameter are established.

以取代苯苯环碳原子化学位移为依据，用曾经设定并初步证实的甲基诱导效应和共轭效应参数，讨论了甲基取代基的诱导效应、共轭效应及定位效应。

The result suggests that Al2O3 nanoparticle can stimulate donor function and thus result in a significant increase in conjugative plasmid dissemination in aquatic environments.

在一定条件下，纳米材料可促进质粒在液相中的接合转移，从而可能引发纳米材料的水环境安全问题。

In this paper, the conjugative heat transfer in a regenerative cooling structure is investigated numerically by using the FEM and CFD software.

以主动冷却发动机壁板为对象，考虑外部受均匀热流载荷作用下方形管在流体冷却过程中的共轭传热问题，建立了防热涂层、固体管道和冷却液的三维耦合分析模型。

The influence of the resonance effect,the conjugative effect,and the inductive effect on the absorption frequency of the characteristic chemical bonds have been discussed mainly in this paper.

重点讨论了共轭效应、共振效应、诱导效应对功能团吸收频率的影响，并利用吸收频率数据比较有机物的某些性质，如羰基化合物的亲核取代反应，若香烃的亲电取代反应，某些酸的酸性强弱，有机物的异构现象。

The orientation rule of substituting group s in benzene ring is often explained with electronic effect (inductive effect and conjugative effect).

有机化学教材中通常是从电子效应来解释苯环上取代基的定位规律。

No fluorescence of 2b hasbeen detected. Probably the planar conjugative effect is destroyed by the sterichindrance of methoxy group.

而蒽冠醚2b则几乎没有荧光，这可能是由于甲氧基的引入导致体系的空间位阻增大，从而破坏了蒽环的平面共轭效应所致。

The development of research strategies and novel molecule methods in recent years have made a more careful analysis of HGT possible under natural and artificial conditions. Furthermore, horizontal transfer of catabolic gene in environment enhances biodegradation of recalcitrant organic compounds. Particularly, the delivery of catabolic gene information of conjugative plasmids to bacterial population in situ has great potential in bioenhancement.

近年发展起来的研究策略和新的分子生物学方法使人们能对自然和人工模拟状态下的水平基因转移进行更精细的分析，降解基因在环境中的水平传播促进了难降解有机物的生物降解，尤其是携带降解基因的接合质粒向原位细菌种群中的转移在生物强化中具有巨大的潜力。

Parameters based on chemical shift indicate that methyl is a substituent with electron-withdrawing inductive effect and poor electron-donating conjugative effect. Perhaps its conjugative effect is on critical point. Methyl is electron-withdrawing for benzene relative to H. Otherwise, methyl has strong p-position and weak o-position orientation effect.

化学位移值表示的诱导效应参数表明甲基具有吸电子诱导效应，经校正后的化学位移值表示的共轭效应参数表明甲基具有微弱的给电子共轭效应，甚至其共轭效应有可能正处于给电子和吸电子的临界状态，总之相对于氢原子，甲基具有吸电子效应。

The structure and stability of all possible isomers of C50X(X=SiH2, PH, S) were investigated by ab initio HF/3-21G calculations. The calculation results indicate that the preferred position for cycloaddition of SiH2, PH, and S on C50 is consistent, i.e. on the C3-C4 and C4-C4 sites of C50, and the resultant most stable cycloaddition isomers are [5,6]-closed and [5,5]-closed structures. The main driving force governing the stability of the C50X(X=SiH2, PH, S) isomers is the strain, or the conjugative effect, or the combination of strain and conjugative effect, depending on the addition positions and the types of the attacked C-C bonds.

用从头算HF/3-21G方法研究了C50的环加成衍生物C50X(X=SiH2， PH， S)所有可能的异构体的结构与稳定性，计算结果表明，SiH2基团、PH基团与S原子在C50上环加成的优先加成位置相同，都为C3-C4类键和C4-C4类键，并且相应形成[5，6]-闭环和[5，5]-闭环结构的最稳定异构体；决定C50X(X=SiH2，PH，S)各异构体稳定性的主要因素，因加成位置以及发生加成反应的C-C键的单双键类型的不同，可能是张力、共轭效应或者二者的共同作用。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷