结晶性

Common strategies and examples of protein engineering in improving protein solubility, homogeneity, and crystallizability are presented.

近年来分子生物学尤其是蛋白质工程的应用有效地提高蛋白质的溶解度、均一性及可结晶性等内在特性，促进蛋白质的结晶，成为提高蛋白质结晶能力和蛋白质晶体分辨率的有效途径。

White crystal or crystalline powder, slightly soluble in water, easily deliquescence.

为白色结晶或结晶性粉末，微溶于水，不易潮解。

Specificity:Colourless or white crystaIline granuIe or crystaIline powder odourless;taste,saIty and acid;solubIe in water,diIffIicuIity in ethanoI;sIightIy deliquescence in moist air,PH7.6－8.6 in 5％ agueous soIution,when heated to 150℃,it may lose crystal water.

性能：无色或白色结晶颗粒或结晶性粉末，无臭，味凉，溶于水，难溶于乙醇，在潮湿空气中微有潮解性。5％水溶液的PH为7.6—8.6，150℃失去结晶水。

The results showed that the ungrafted KF and grafted KF can both induce transcrystallization in PA6/KF composites in the range of the beginning crystallization temperature and approaching melting temperature.The transcrystallization was more fine and perfect at higher crystallization temperature than at lower crystallization temperature,so was the ability of inducing transcrystallization.The grafted KF enhanced the growth ability of transcrystallization and promoted PA6 to form more fine and perfect transcrystallization than the ungrafted KF atrelative lower crystallization temperature. 5.The effect on mechanical properties and fracture morphologies of PA6/KF composites by anionic grafting nylon 6 onto KF was studied.

四、采用PLM 对PA6/KF 复合材料的界面结晶情况加以观察，发现PA6 与许多结晶性聚合物一样，在不受阻碍，没有外力的作用下能形成完整的球晶，KF 可以诱发横晶的生长，其诱发横晶的能力随着结晶温度Tc 的升高而增强，在相同条件下改性KF 所诱发横晶的密度及完整程度明显高于未改性的KF。

In the thin films of semicrystalline block copolymers there exist three driving forces: the interaction between substrate and block copolymer, crystallization of crystallizable component and microphase segregation between unlike blocks. The relative strength of these three driving forces can be regulated by various methods.

在这两类结晶性嵌段共聚物薄膜中存在三种作用力：基体和嵌段共聚物之间相互作用力、可结晶链段的结晶以及不同链段之间的排斥作用力。

Their thermotropic phase behavior was investigated by differential scanning calorimetry and POM. It was found that T(subscript S-N) w and T(subscript N-I), of PMMAZO was slightly increased with the increased of the mass ratio of liquid crystal block segments. PEO and PMMA block affected the liquid cystal behavior of PMMAZO. Meanwhile, PMMA and PMMAZO obviously influenced the crystals property of PEO segments3 which was decreased as the increase of molecular weight of PMMA and PMMAZO segments.

以差示扫描量热仪和偏光显徽镜研究了ABC三嵌段共聚物PEO-b-PMMA-b-PMMAZO的热力学相转变行为，发现随着PMMAZO链段的质量百分比的增加，三嵌段共聚物中PMMAZO链段的T和T逐渐提高；同时，PMMA和PMMAZO链段的长短影响PEO链段的结晶性，随着液晶段PMMAZO和PMMA链段分子量的增加，PEO链段的结晶性减弱。

Crystallite grows up when being annealed. With increase of Sn2+ concentration and use of ITO substrate this trend along(101) become obvious. Besides, crystallization of sample produced by SnCl2 solution of 0.1mol/l is better than that by SnCl2 solution of 0.2mol/l and glass substrate is more propitious to crystallization of SnS films than ITO substrate.

Sn2+浓度的增加以及ITO衬底明显有利于晶粒沿(101)晶面结晶。0.1mol/l的SnCl2溶液制备出的样品较0.2mol/l的SnCl2溶液制备出的样品结晶性更好，玻璃衬底较ITO衬底更有利于SnS的结晶。

How to put these characteristics into the practical application to conduct the design of the mould and the plasticizing system of the injection molding m.

介绍结晶性塑料在注塑过程中的塑化特点、取向与结晶的关系及其对制品性能的影响，注塑参数对结晶性塑料塑化、取向、结晶的影响。

The molecular motion of amorphous region at high-frequency was found to be hardly affected during the stretching processes. In summary, elongation has created major but different influences on the morphology and molecular motion of the aforementioned four series of polymeric elastomers. For those elastomers like natural rubber and poly , elongation has induced crystallization of the noncrystalline or the soft segments. The crytallinitiy and the crystal thicknesses increase monotonously during the course of the stretching; On the other hand, the stretching processes for those semicrytalline copolymers like EMA and POE are rather complex, including the formation of crystal at relatively low λand the destruction of the crystal at the utmost λ. It revealed that stretching process has resulted in a decreasing of the thicknesses and a shortening of 〓C T〓s for the orthorhombic crystalline components.

拉伸对上述四个弹性体体系的聚集态结构都产生了很大影响，但是影响的程度和内容因体系而不同，对于本身存在着化学交联或者是物理交联的体系而言，拉伸导致了其中本来难以结晶组分的结晶，且结晶度随着拉伸比增加而增加，与此同时，体系结晶的晶片厚度也会逐渐增加；而对于结晶性共聚物体系，如EMA和POE，结晶区本来起到了物理交联的作用，在这种情况下拉伸的影响变得比较复杂，拉伸对于不同晶型的影响有所不同，在拉伸比较低的情况下体系总体的结晶度会有所增加，说明有新的结晶产生，当接近或达到断裂伸长比时，体系的结晶度会突然降低，含量占优的结晶会被拉伸所破坏，含量较低的结晶在整个拉伸过程中受的影响较小。

There is a strong interaction between AP and PEG,which decreases the crystallinity of PEG in the mixtures.

PEG的结晶性会显著影响材料的使用性能，国内外对其结晶性进行

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。