阳离子

A water-soluble porphyrin dimer containing eight positive charges, bridged by 4,4 -dicar- boxy-2,2 -bipyridyl, has been synthesized.

以4，4'-二羧酸-2，2'-联吡啶为桥联试剂，合成了一种含8个阳离子的水溶性桥联双卟啉。

The factors which affect the average molecular weight of the polymer of AM and DMDAAC were investigated. The optimal reaction conditions are as follows: the concentration of monomer AM was 30%, while DMDAAC was 5%; the reaction temperature was 30℃, the amount of initiators at the low temperature stage was 0.05‰(compared to the weight of the monomers joining the polymerization), while V-50 was 0.025‰, the weight ratio of potassium persulphate to sodium bisulphite is 1:1, the amount of carbamide was 40‰, and complexing agent was 0.05‰, besides, aerate nitrogen gas for 8min, then the high molecular weight polymer (M=1.217×10^7) could be got after 16h reaction.

研究了影响AM与DMDAAC共聚物的平均分子量的因素，得到了优化条件为：单体浓度为30%，DMDAAC与AM摩尔比为5：95，聚合温度为30℃，低温段引发剂用量为0.05‰，K2S2O8与NaHSO3质量比为1：1，偶氮二异丁基脒盐酸盐(V-50)用量为0.025‰，尿素用量为40‰，乙二胺四乙酸二钠(EDTA-2Na)用量为0.05‰，在此优化条件下聚合反应16h后得到分子量为1.217×10^7的阳离子型聚丙烯酰胺。

The haemolymph cation levels of bivoltine races were about 30% higher than the multivoltine PM.

家蚕二化性品种的血淋巴阳离子水平比多化性品种PM高出30%。

Then VIII reacted with hydrochloric acid and bromoethlane respectively to get tertiary ammonium chloride and quaternary ammonium bromide cationic surfactants, and the properties of cations were detected by the method of bromophenol blue.

然后再与盐酸和溴乙烷反应，合成铵盐和季铵盐型含氟阳离子表面活性剂，利用酸、碱性溴酚兰实验和铁氰化钾法分别对表面活性剂进行了定性和定量分析。

Resonance light scattering spectrum of cadmium- phenanthorline- bromophenol blue system has been studied. The effects of interference substances and optimization of procedure have been investigated. In the presence of Tris-HCl(pH=9.60),Cd2+ reacts with Phen to form the chelate cation, which further reacts with acid dye of BPB to form an ion-associated complex. Then, the complex molecules are accumulated to particles by virtue of hydrophobic forces and other molecular forces. This results in significant enhancement of RLS intensity, and the enhanced intensity of RLS at 638nm is proportional to the concentration of Cd~(2+).

研究了镉-邻菲罗啉-溴酚蓝体系在碱性条件下的共振光散射光谱特征，考察了体系的影响因素和最佳反应条件，研究表明，在pH=9.60的Tris-HCl介质中，镉与邻菲罗啉形成络阳离子，再与酸性染料溴酚蓝形成离子缔合配合物，在疏水力等分子间作用力下，缔合物分子聚集形成缔合微粒，溶液的共振散射光显著增强；在638nm处RLS增强程度与镉浓度成线性关系，线性范围为0-3.20mg/L，检出限为4.50ug/L。

A dual-wavelength resonance light scattering ratiometric method based on the interaction between bromothymol blue and cetylpyridinium bromide was developed for the determination of CPB.

应用双波长共振光散射比率法研究了溴百里酚蓝与阳离子表面活性剂溴化十六烷基吡啶的相互作用。

Screening of complex-enzyme-producing strains on Broussonetia papyrifera white bast fiber ;2. According to the classification of pectinase and its action mechanism,the process conditions and effect of pectinase on bio-pulping of bast fiber material are introduce.

综述了果胶酶在制浆造纸上应用的研究进展，从果胶酶系的分类和脱胶机理的角度出发，介绍了果胶酶及其相关微生物在韧皮纤维原料酶法和发酵浸渍法制浆中的作用条件和作用效果，着重介绍了果胶酶在湿部化学上降低阳离子需求量的作用，同时讨论了外界因子对其提高细小纤维和填料留着率效果的影响，并指出果胶酶对纸浆物理性能的影响。

The research result showed that(1) The reclaimed water used didn't influence the sensory quality of a given turf grass tested;under irrigation of reclaimed water,Festuca arundinacea are the best,followed by Buchloe dactyloides and Zoysia japonica;(2) The influence of different types of irrigation water on growth characters of turfgrass is species-dependence;(3) Irrigation by reclaimed water and fresh+reclaimed water increases Na~+,CEC,and total porosity of the turf soil in comparison to fresh water,and improves soil quality.

结果表明：本研究使用的再生水对所供测试绿化草种的颜色、覆盖度、质地和均匀性无不良影响，再生水灌溉条件下，高羊茅表现出了最强的综合耐污能力，其次是结缕草和野牛草。灌溉水类型对于草坪草的生长指标的影响具有种的特异性。再生水灌溉和&清水+再生水&交替灌溉提高了土壤的阳离子交换量和总孔隙度，有利于土壤物理性状的改善。

Method8: The paPef, fOr the first time, studied the apoptosis or necrosis of K562cclls induced by bungarus multicinclus crude venom and several components frOmcrude venom by cation exchange chromatography\' through the quatitative analysis offlow cytometry as well as the qualitative analysis, such as inversed opticalmicroscopy, MTT method and fluorescent microscopy, and so on.

本卖验采用羧甲基纤维素C-52阳离子交换层析将银环蛇粗毒进行了若干毒素组分的分离纯化，并以流式细胞术定量分析为主，以倒置显微镜、MTT比色法、荧光显微镜等多种定性分析为辅，首次对银环蛇粗毒及其若干组分蛋白对人慢性粒细胞白血病K562肿瘤细胞的细胞杀伤作用和凋亡诱导情况进行了研究。

As a result these types of fibre not only keep their own fine traits,but also own good conglomerating structure ,crystal limit ,calorifics performance and mechanics performance. Compared with the ordinary fiber ,the neatness of high-contracted polyester fiber increases and it s diameter also increases.

在力学分析方面：我们得到阳离子可染的涤纶纤维的于态断裂比强度较一般涤纶棉纤维的有所降低，断裂伸长反而上升：高收缩涤纶棉纤维干湿态的断裂强力和断裂伸长都较一般涤纶棉纤维的有所降低。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。