负电性

It was concluded that the electrostatic attraction between negative dye molecule and positive biomass due to amidogen protonation was the important mechanism of dye biosorption by biomass.

氨基质子化引起的菌体正电性和染料负电性之间的静电引力是染料吸附的重要机制。

Study on molecular characters of atagonist indicated that neonicotinoids insecticides and the active pharmaceutical group displayed electro-negative and electro-positive, and study on the interaction between atagonist and nAChR at the complex of subunit of insect and subunit of mammalian indicated that the effect of basic aminoacid in D ring of binding location of ACh is very obvious, and the YXCC in C ring of binding location also attracted the attention too.

激动剂的分子特点研究表明，新烟碱类杀虫剂和ACh药效基团在静电性上分别显示负电性和正电性。用昆虫亚基和脊椎动物亚基组成的杂合受体同激动剂相互作用的研究，主要集中在受体亚基上不同氨基酸残基与不同激动剂结合电生理效应的特点上。

It was the interactional result of electronegative double bond and branched chain with positive induction effect and space steri.

研究发现，加入不同的添加剂使润滑脂的油膜强度、锥入度和滴点产生不同的变化，并对其产生的原因作了机理分析，认为是由于极压抗磨添加剂分子中带负电性的双键和带正诱导效应及空间位阻效应的支链共同作用的结果。

It was also found that at experimental concentrations there was no regularity for the change of activity of copper salicylate encapsulated in negatively charged liposomes, and copper salicylate encapsulated in liposomes with more negative charges could promote the dismutation of superoxide anion free radicals, however, so could copper salicylate encapsulated in liposomes with fewer negative charges only in lower concentrations.

并发现在实验浓度范围内，负电性脂质体包裹的水杨酸铜，活性变化无规则，且荷负电量多的脂质体包裹的水杨酸铜促进超氧自由基的歧化，而荷负电量少的脂质体仅在低浓度区对超氧的歧化表现为促进作用。

Carbon lies midway in the periodic chart between the strongly electropositive elements of group I-A and the strongly electronegative elements of group VII-B.

碳在元素周期表上位于I-A族强正电性元素和VII-B族强负电性元素之间。

Furthermore, the filtrate flux on equilibrium can increase about 50%, comparing to that of unmodified PAN membrane.

上述结果表明，在聚合膜中引入具有负电性的基团对提高膜的抗污染性有显著效果。

The active site of His and VI are both imidazole group, but His also has reactive amido and -COOH with negative charge.

前两种配基中的主要活性位均是咪唑基团，但组氨酸分子中还含有负电性的羧基和具反应活性的胺基。

Sythesizing thevalence electron number, electronegativity and atomatic radius of the alloying element, thecharacteristic value may be fixed at 4.223 in Ti alloy, and which may be expressed as4.223=∑N_if_i+0.310△x / x_+0.551 △r / r_Ti

综合合金元素的价电子数、化学负电性和原子半径三个因素，钛合金中ω相形成的特征值可定为4.223，其表达式为 4.223=∑Nf_i+0.310Δx/x_+0.551Δr/r_Ti

The calculated results show that azido in azides has linear structure , the most optimized CaN6 has linear structure , and the most optimized (CaN6)n (n=2～5) clusters have chain structure of perpendicularity of approximate diamond composed by two azido with two Ca atoms . The middle N atoms of azido show positive, the N atoms at both ends of azido show negative, and the N atoms effected with Ca atoms directly show more negative . There is strong ionic bond between the Ca and N atoms. The IR spectra of the most optimized (CaN6)n (n=1～5) clusters have four vibrational sections , the whole strongest vibrational peak lies in 2195～2280cm-1,and the vibrational mode is anti-symmetric stretching vibration of N-N bonds in azido . Stability analysis show that (CaN6)3 and (CaN6)5 clusters are more stable than other clusters .

结果表明，叠氮化合物中叠氮基以直线型存在，CaN6团簇的最稳定结构为线型结构，(CaN6)n(n=2～5)团簇首先由两个叠氮基与两个Ca原子构成一个近似菱形，再由菱形相互垂直形成链状最稳定结构；叠氮基中间的N原子显示正电性，两端的N原子显示负电性，且与Ca直接作用的N原子负电性更强，金属Ca原子和N原子之间形成很强的离子键；(CaN6)n(n=1～5)团簇最稳定结构的IR光谱分为4个部分，其最强振动峰均位于2195～2280cm-1，振动模式为叠氮基中N-N键的反对称伸缩振动；稳定性分析显示，(CaN6)3和(CaN6)5团簇相对于其他团簇较为稳定。

First use soap-free emulsion preparation for polystyrene spheres, and the kernel, Reuse are silicon acetic tetraethyl ortho-silicate in ammonia catalytic hydrolysis, formed under the condition of silica, charged by six water or their cerium, six of methylene amine solution HMT (4) into the negatively charged, uniform cerium oxide coated surfaces to PS microspheres, core-shell structure of PS - CeO2 and PS - SiO2 composite microspheres.

首先用无皂乳液制备了聚苯乙烯微球，并以此为内核；再利用正硅乙酸乙酯在氨水催化条件下水解，形成带负电性的二氧化硅，或者利用六水亚硝酸铈、六亚甲基四胺水溶液分解出带负电性的氧化铈，均匀的包覆到PS微球表面，形成核-壳结构的PS-CeO2和PS-SiO2复合微球。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。