二聚性

The interfacial surface and properties of glass fiber reinforced PET was studied by using Fouier transform infrared spectrometer scaning electron microscopy, dynamic viscoelastometer differential scattering calorimetry and mechanical measuring methods, the effects of coupling agent on the property of PET and its interfacial adhesion were examined.

用红外光谱分析、扫描电镜、粘弹谱仪、差示扫描量热法及力学性能测试方法，考察了玻璃纤维增强聚对苯二甲酸乙二醇酯的界面情况及力学性能等，并分析了玻璃纤维表面处理剂对PET树脂及其界面粘结性的影响。

Since most of the large molecules containing phosphorus element have double bonds, it is necessary to consider the special structures of double bonds in order to deal with these large systems more accurately. So, based on density functional theory and electronegativity equalization principle, applying a general atom-bond electronegativity equalization method , using separated program, through regression and least-squares optimization , the parameters of atoms and bonds in molecules are determined . By these parameters , the charge distributions and the energy of some molecules containing phosphorus element, especial the fragment of DNA, RNA, are calculated . The results are quite good.

由于这些含磷生物大分子体系都含有双键，为了明确的处理双键，进而更准确的解释带有双键和共轭双键的含磷生物大分子结构与性质的关系，我们以密度泛函理论~([1-4])和电负性均衡原理~([5-9])为基础，应用和开发原子-键电负性均衡方法中的σπ模型，利用最小二乘法，拟合确定了一些分子（含碳、氮、氧、氢以及磷等原子）的各种类型原子及化学键区域的参数，并利用上述参数计算了一些多聚核苷酸的电荷分布以及分子的总能量，进行了讨论，得到的结果可以和从头算相媲美。

A Intercalary behavior of different molecular weight of PEG such as 2 000, 4 000 and 6 000 in VXG was studied. The intercalation of polymer increases the layer distance of host and occurs cooperative effect with it.

研究比较了2 000、4 000、6 000三种不同分子量的水溶性聚合物聚乙二醇在五氧化二钒干凝胶层状氧化物中的嵌入，PEG的嵌入增加了主体层状物的层间距并与主体材料发生协同作用。

The morphology of scaffolds shows a regular morphology at high molecular weight. Furthermore, pore size was increased with high phase separation temperature, long coarsening time, and high concentration of nonsolvent.

反之在没有非溶剂的存在下(100/0二氧陆环/水)，高分子溶液系统仅会出现固-液相分离，显示聚乳酸与二氧陆环是互溶性佳且稳定的溶液系统。

After tail iv injection, the blood exposure time of stealth liposomes and the area under blood drug concentration-time curve were pronouncedly increased, compared with the regular liposomes group and the free doxorubicin group,respectively.

以化学梯度法包封脂质体，用两亲性聚乙二醇-二硬脂酰磷脂酰乙醇胺对脂质体膜进行修饰以制备隐形脂质体；用HPLC-UV法测定给药后小鼠体内组织中的药物浓度。

Curwood's Dave Engen, market manager for cheese, describes the Curpolene 7202 film as a 2.6-mil, two-ply, coextruded lamination of oriented polyethylene terephthalate, laminated to a proprietary ethylene vinyl alcohol/nylon coex that offers superior resistance to heat and abuse, as well as superior machinability, and barriers and esthetics for nonrespiring sliced cheeses like Provolone and Cheddar.

curwood的戴夫Engen的，市场经理，奶酪，描述curpolene 7202电影作为一个2.6万桶， 2层，共挤层压面向聚对苯二甲酸乙二醇酯，层压到一个专有的乙烯-乙烯醇/尼龙国际会展中心，提供优越的抗高温和虐待，以及优越的可加工性，和障碍，美学为nonrespiring切片奶酪一样， provolone和干酪。

In order to overcome the weakness of clustering in the WEKA system,the paper makes secondary development under the WEKA platform to extend the clustering algorithms.

为了克服WEKA系统在聚类方面的薄弱性，在WEKA的开源环境下进行二次开发，扩充了聚类算法。

Using N, N-dimethyl-ethylenediamine as cationic substitute and 2-hydroxyethyl methacrylate or allylamine as co-substitute, a kind of pH-sensitive polyorganophosphazenes bearing unsaturated side group was prepared.

以N，N-二甲基乙二胺为阳离子型取代基，甲基丙烯酸羟乙酯或烯丙胺为共取代基，制备了同时带有pH响应性侧基和不饱和双键侧基的聚膦腈。

The aim of this study was to develop a novel amphiphilic functional block poly(ε-caprolactone) bearing ketone groups MPEG-b-P(OPD-co-CL. 2-oxepane-1, 5-dione was copolymerized with ε-caprolatone in which methoxy poly (MPEG, Mn=5 000) and stannous octoate were used as initiator and catalyst, respectively. The syntheses were conducted by bulk and solution polymerization. 1H NMR results showed that peak position and splitting of the polymers synthesized through solution polymerization were consistent with theoretical data, demonstrating the products were designed block copolymers. While in the bulk polymerization, polymer peak position was changed due to their high reaction temperature, suggesting their structural variation.

将带有羰基官能团的4-羰基己内酯和ε-己内酯分别在甲氧基聚乙二醇(MPEG，Mn=5 000)为引发剂，异辛酸亚锡为催化剂溶液和本体体系中开环聚合，合成了两亲性侧基带有羰基官能团的聚己内酯嵌段共聚物MPEG-b-P(OPD-co-CL.1H NMR结果表明采用溶液聚合法合成的聚合物各峰的峰位置和分裂情况与理论一致，证明了产物是实验所设计的嵌段共聚物，而采用本体聚合法合成的聚合物由于温度的影响，聚合物各峰的峰位置发生了变化，说明其结构发生了变化；差示扫描量热法分析结果表明随着OPD单体含量的增加，聚合物的熔点，玻璃化转变温度和熔融焓增加；热失重测试结果表明OPD单体的引入增加了聚合物的热敏感性。

It is converted to a series of polyamides and polyesters by means of low-temperature solution polycondensation and interfacial polycondensation.

以间二甲苯和多聚甲醛为原料合成了芳香性螺双内酯单体――5，5′-二甲酰氯-7，7′-二氧-2，2′-螺双，并通过常温溶液缩聚和界面缩聚合成了一系列聚酰胺和聚酯。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新