查询词典 sulfate

The toxicity of selected compounds and their binary mixtures of sodium dodecyl sulfate with three substituted aromatic compounds to photobacterium phosphoreum was investigated, respectively.

研究阴离子表面活性剂十二烷基硫酸钠和苯酚、硝基苯、甲苯3种取代芳烃对发光菌的单一毒性，以及在等浓度配比条件下，SDS与这3种取代芳烃二元混合体系的联合毒性效应，并采用毒性单位、相加指数、相似性参数和泥合毒性指数进行毒性评价。

Levels of phylogenetically defined groups of methanogens and sulfate-reducing bacteria in the leachate of several landfills were determined by quantitative rRNA hybridization.

利用分子生物学方法，最近的一些研究发现厌氧处理系统中存在许多新的古细菌和真细菌16S rRNA基因序列（16S rDNA）。

Purpose The clinical prospects of injectable calcium sulfate were verified through the mechanical tests, degradation and osteogenesis abilities' experiments, and the physicochemistry characteristics and biomechanical appreciation were evaluated.

对可注射式硫酸钙理化性能和生物相容性进行检测，通过动物实验研究其力学稳定性、降解性能及成骨性能，探讨可注射式硫酸钙的临床应用能力。

The graft polymerization of acrylonitrile on Crosslinked polyvinyl alcohol microspheres CPVA microspheres was performed by using cerium ammonium sulfate as initiator, and grafted microspheres CPVA-g-PAN were prepared. Subsequently, the grafted PAN was converted into poly via amidoximation reaction with hydroxylamine hydrochloride as reagent, resulting in the functional microspheres CPVA-g-PAO. The chemical structure and physicochemistry characters were adequately characterized with infrared spectrum, scanning electron microscope and determining Zeta potential. The effects of main factors on the amidoximation transform reaction of the grafted PAN were researched with emphasis, and the adsorption property of the functional microspheres CPVA-g-PAO for some biomolecules was examined preliminarily with uric acid as a model biomolecule.

以硫酸铈铵为引发剂，实施了丙烯腈在交联聚乙烯醇微球表面的接枝聚合，制备了接枝微球CPVA-g-PAN，然后以盐酸羟胺为试剂，通过偕胺肟化转变，将接枝的PAN转变为聚偕胺肟，制得了接枝有聚偕胺肟的功能微球CPVA-g-PAO，采用红外光谱法、扫描电子显微镜及Zeta电位测定等法，对功能微球CPVA-g-PAO的化学结构及物理化学特性进行了表征，重点考察了各主要因素对接枝PAN的偕胺肟化转变反应的影响，也以脲酸为模型分子，初探了功能微球CPVA-g-PAO对生物分子的吸附性能。

The later period in growing is born in cotton, gush of face of blade applies 1%～ 2% potassium chloride (or potassium sulfate, potassium nitrate) solution, can prevent or reduce bine of pily red autumnal leaves is withered ill happening.

在棉花生长中后期，叶面喷施1%～2%氯化钾溶液，可预防或减轻棉花红叶茎枯病发生。

The principle and three adding methods of additives carbon for elevating utilization rate of electrode materials were introduced;The forming methods of barium plumbate membrane for preventing corrosion of positive electrode grid were analyzed;The effect and principle of additive calcium sulfate for improving the high rate discharge performance of VRLA batteries were reported.

综述了电极和电解液一些添加剂的作用及其在阀控铅蓄电池中的应用情况；介绍了提高电极活性物质利用率的添加剂的3种添加方法和原理；分析了防止正极板栅腐蚀的添加剂在板栅表面形成铅酸钡膜的3种方法；报道了硫酸钙添加剂在改善高倍率放电性能方面的效果和工作原理。

Using aluminium sulfate, aluminium polychloride, polymeric iron and PAM to treat the waste water of Beishiqiao waster water treatment plant, and also study the feeding order.

对西安市北石桥污水净化中心的污水（COD 300 mg/L左右，BOD 150 mg/L左右）用硫酸铝、聚合氯化铝、聚合铁及聚丙烯酰胺进行单剂及组合处理，并对组合处理的投加顺序作了研究。

It has been reported that sulfation of polysaccharides affect strongly on their immunocyte activity and anti-tumour bioactivities, but the sulfatation of polyporus umbellatus polysaccharides has not been reported.The thesis synthesize the sulfate polyporus umbellatus polysaccharides for the first time.

据报道，多糖的硫酸酯化对多糖的免疫细胞活性、抑制肿瘤等生物活性等有很大影响，但是国内外未见猪苓多糖硫酸酯化的相关研究与报道，本实验首次制备得到猪苓多糖硫酸酯，具有创新性。

A series inorganic high molecular flocculants zinc polysilicate is prepared by using polysilicic acid and zinc sulfate as raw materials.

以聚硅酸、硫酸锌为原料制备了系列无机高分子絮凝剂聚硅酸锌。

The novel inorganic ion-flocculant poly-nucleate aluminum hydroxy silicate-sulphate was prepared from aluminum sulfate and polysilicic acid under non-high shear condition.

在非高剪切力条件下，将硫酸铝引入到聚合硅酸中合成了新型聚硅酸硫酸铝絮凝剂。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。