They made a fortune out of him, " says Thomas Pietsch, a wildlife expert at the Hamburg-based animal-welfare group Four Paws. "But it's wrong to keep polar bears in captivity.
汉堡动物权益组织FourPaws的野生动物专家托马斯•皮什指出，“但北极熊不能圈养，他们需要空间，北极的气候更适合他们。”
The results showed that: the solubility and processability of polyaniline can be increased through aniline copoly with aniline derivative with polar or soluble group.
结果表明：苯胺与带有极性或可溶性基团的苯胺衍生物共聚可有效提高聚苯胺的溶解性和可加工性。
Like the UNIFAC group-contribution equation of state, it performs satisfactorily in the VLE prediction of systems containing polar components, including VLE under high pressures.
用此法预测了含极性组分体系常压到较高压力的汽液平衡，结果良好，与UNIFAC基团贡献状态方程的结果相当。
If the silane has no polar group, the surface free energy is low.
反之若硅烷中不含有极性基，则处理后玻纤的表面能较低。
Methllyl sulfonic acid acted as a chain transfer agent besides supplying the strong polar anionic sulfonic group.
甲基丙烯磺酸钠除提供强极性的阴离子磺酸基外，还起链转移剂作用；
Because ARTON had polar functional group, it showed great advantages and bright application future.
由于ARTON具有极性基团，所以显示出独特的优越性能和良好的应用前景。
The compatibility with polar material and bonding performance of SBS is improved by introducing polar group.
在SBS上引入极性基团进行原位改性，可以提高与极性材料的相容性及粘接性能。
Please group amino acids according to the nature of their side chains: hydrophobic, hydrophilic, polar and nonpolar.
请依据氨基酸支链的性质来分类：疏水性、亲水性、极性与非极性。
Based on the general synthesis of SBS by anionic polymerization mechanism, we have carried out the copolymerization of SBS with several polar monomers by conversion of end-group of SBS.
本论文研究目标是在常规阴离子聚合方法合成sbs的基础上，通过端基转化实现了SBS与极性单体共聚。
Introducing polar group onto molecular structure of PP via chemical reaction is deemed as a primary means for functionalization of PP.
通过化学反应在PP分子结构中引入极性基团是达到PP功能化的根本途径。
The introduction of the vinyl monomer containing polar group into PP macromolecular chain could improve the flame retardance of PP obviously.
在PP大分子链上接枝含极性基团的乙烯基单体，可显著提高PP的阻燃性能；
In recent years, the trend in studying the depressant formulas home and abroad is to increase their polar group or surfactant group.
近年来，国内外对降凝剂的配方研究趋向是增加极性基团或表面活性基团。
The experimental results show that polar groups (mainly carbonyl group) are introduced into the molecular chains of HDPE during electron beam irradiation, the polarity of HDPE is thus increased.
结果表明，通过电子束辐照可在HDPE分子链上引入含氧极性基团，使HDPE的表面自由能增大，极性增强，与水的接触角减小。
Based onthe molecular QCLC model, a group contribution quasi-chemical local composition model is proposed, in which polar molecule is divided into several non-polar functional groups.
本文在前文的分子模型基础上，提出了似化学局部组成的基团模型，可用于极性分子混合物申组分活度系数的预测。
After analyzing the spectrum of a group of signals, non-polar differential exponent pulse signal was selected as carrier wave, which can separate therapy threshold and ache threshold.
通过对载波信号的频谱分析，提出了一种能分离治疗阈值与疼痛阈值的无极性指数脉冲。
The polar head group is still extending parallel to the bilayer surface. Ginsenoside Rbl and Rh2 have significantly increased the fluidity of lipid bilayers.
各皂苷分子对不同结构的磷脂双层膜极性头部和疏水性尾部的作用也有差异。
The metal portion and the resin portion are bonded by the interaction between the polar functional group and the adhesive functional group.
所述金属部分与所述树脂部分通过所述极性官能团与所述粘附性官能团之间的相互作用而相结合。
Cholesterol is another lipid component of most cell membranes. It has a hydroxyl group, a tiny polar head group so to speak attached to a rigid hydrophobic tail.
胆固醇也是大多数细胞膜脂质的组成成分，它有一个羟基基团，即一个微小的极性头部连接到一个刚性的疏水性的尾端。
SEM picture revealed that treated surface become rough, while FTIR analysis showed that groups of materials were changed in modified chemical with introduction of oxygen-containing polar group.
FTIR分析表明，改性后的材料化学基团发生变化，引入了含氧极性基团。
It is mainly because the polar force in surface tension decreases which results from the increase of CH3 nonpolar group on the surface of silica particles shown from FTIR analysis.
表面润湿性降低，主要是表面张力中极性力的贡献，FTIR分析表明，这是由于二氧化硅颗粒表面-CH3非极性基团增加所致；
Besides, the amount of polar group is so large in the copolymer prepared by the method in the invention that the copolymer can be used as transparent optical product.
此外，通过所述方法制备的共聚物的极性基团的量很大以至于该共聚物可被用于透明的光学产品。
Starch is a commonly used hematite depressor in reverse flotation of hematite and dissolved waste Saccharomyces Cerevisiae contains a polar group similar to starch.
淀粉是赤铁矿反浮选工艺中常用的赤铁矿抑制剂，而废啤酒酵母溶解相中含有与淀粉中相似的极性基团。
A catalyst composition including the dinuclear transition metal compound is highly active for a monomer having a polar functional group.
包含所述双核过渡金属化合物的催化剂组合物对于含有极性官能团的单体活性高。
The authors conclude that this may be due to the interaction between the lanthanide ions and the polar group in urethane.
对该体系的流变行为的研究，进一步证实稀土与聚氨酯间的相互作用的存在。
Excellent selectivity was obtained for the separations of polar position isomers. The benzamide substituent group on crown ether makes the stationa…
由于冠醚上引入苯甲酰胺取代基，因而对苯胺类及不经衍生化的碱性化合物能特殊选择性地分离。
Excellent selectivity was obtained for the separations of polar position isomers. The benzamide substituent group on crown ether makes the stationa…
由于冠醚上引入苯甲酰胺取代基，因而对苯胺类及不经衍生化的碱性化合物能特殊选择性地分离。
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