极性的

Bicoid is one of the important Drosophila genes involved in the control of embryo polarity arid larvae segmentation. The protein encoded by bicoid is a homedomain-containing transcription factor, which organizes a group of polycomb genes expressed in early development of embryo and therefore named morphogen.

Bicoid是调控果蝇胚胎极性及以后分节发生过程的重要基因，这一基因编码的蛋白是一种转录调控因子，对一组早期胚胎发育过程中的多齿基因的表达具有调控作用，并被称为形态发生剂。

We chose three amino acid sequences from PDB based on SCOP,which all belonged to and had similar fractal dimensions.From the point of view of multifractal,the complexity of the distance of protein and the polar and volume of amino acid sequences are compared.

按照SCOP分类法，从PDB中选取三条同属于类的分维相近的蛋白质序列，利用多重分形分别对蛋白质空间距离以及序列中氨基酸的极性、体积的复杂性进行比较。

They encompass the following broad bands of biological roles:(1) basic structural units of cellular membranes and cytologically distinct subcellular bodies such as chloroplasts and mitochondria;(2) compartmentalizing units for metabolically active proteins localized in membranes;(3) a store of chemical energy and carbon skeletons; and (4) primary transport systems of nonpolar material through biological fluids.

这类物质无论在功能上还是结构上都有明显不同，它们具有以下广泛的生物学作用。1。细胞膜和细胞中亚细胞器，如叶绿体和线粒体的基本结构单元。2。定位于细胞膜上具有代谢活性蛋白质的划分单位。3。化学能和碳骨架的储藏物质。4。以生物流的形式使细胞内非极性物质得以运输。

Firstly, the effect of solvent on the process of PO impregnation on TS-1 by the method of products impregnating was studied.

在TS-1催化丙烯环氧化反应中，溶剂或混合溶剂的各组分含量及性质对TS-1的催化活性、PO选择性以及反应后催化剂上的沉积物种类和含量的影响很大，有机溶剂的极性经验参数E_T(30)越大，催化剂活性越高。

The UV-visible spectra of oxidized and reduced F28Y and F106Y were in agreement with the wild NGB, but the oxidized F28Y＇s Sorer band had a 2 nm blue shift, which suggested that the two mutants still remain hexa-coordinated form.

氧化型和还原型F28Y及F106Y的紫外-可见吸收光谱与野生型相似，仅氧化型F28Y的Soret带有2nm的蓝移，说明这两种突变体蛋白仍保持六配位形式。F28Y的荧光最大发射峰明显红移（340nm→347nm），表明其荧光基团更加暴露于极性环境中。

And the modified method based on activity coefficient and associated theory were used to calculate the experimental data. At the same time, the applicability of every method to the GLE calculation for polar systems was discussed.

结果表明用溶剂贮存天然气，可以降低燃料罐的储存压力并提高燃料贮存密度，为天然气汽车燃料的研究提供了依据，同时也为研究极性体系的溶液理论和GLE计算提供了丰富的基础数据。

In the existing process of PVB, it has disadvantages of unsteady aldehyde groupdistribution, low content of aldehyde acetal group .

本文针对聚乙烯醇缩丁醛传统生产工艺生产的PVB存在缩醛基分布不均，缩醛度低等缺陷，系统地研究了分阶段醇解一缩合的均相工艺，二甲基亚砜的均相工艺以及极性匹配的醇法均相工艺。

A novel type of photoalignment material based on the esterification reaction of 3,5-dihydroxyl benzyl alcohol and cinnamoyl chloride was firstly reported in this paper. The distinct property of this material is the nonlinear branch conformation and its polarity end with hydroxyl group.

通过在3，5-二羟基苯甲醇分子中的双酚基基团上引入双肉桂酰酯光敏基团的酯化反应，合成了一类新型的分子顶部为羟基极性基团，整个分子构型类似于树枝状的光敏小分子化合物。

To estimate the bioconcentration factor of benzene derivatives in fish by gas chromatography retention time, this paper measured the BCF of chlorobenzene, o-chloro-toluene, p-dichlorobenzene, m-dichlorobenzene, 1,2-dichlorobenzene, nitrobenzene, p-chloro-aniline, p-chloro-nitrobenzene, and 4-chlorodiphenyl in grass crap, and the t_R of test derivatives on the stationary phases of six kinds polarity.

为了用气相色谱保留时间估算取代苯类化合物在鱼体内的生物富集系数，测定了草鱼对氯苯、邻氯甲苯、对二氯苯、间二氯苯、邻二氯苯、硝基苯、对氯苯胺、对硝基氯苯、4-氯联苯9种取代苯类化合物的BCF和不同取代苯化合物在6种不同极性固定相上的tR，建立了tR与BCF的一元回归方程及tR一阶分子连接性指数(1XV)与BCF的二元回归估算方程。

Then he designed a segmented conductor that supplied current to the wheel mounted electromagnet, and the sections reversed the current at the right time to cause the polarity to reverse automatically, and caused the wheel not only to complete one revolution, but also to rotate continuously.

然后，他设计了一个分割导体的电流供应的车轮安装电磁铁，以及部分扭转目前在合适的时间造成的极性自动扭转，并造成车轮不仅要完成一个革命，而且还不断地旋转。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。