查询词典 silica

The paper presents an experimental method to study quick-setting agent, silica fume, fiy ash and superplasticizer combination of four factors on the concrete setting time, strength and flexural performance.

目的 研究速凝剂、硅粉、粉煤灰和高效减水剂四因素组合对混凝土凝结时间、强度及抗折性能的影响。

This dissertation involves the study of the growth dynamics of colloidal particles under unequilibrium and irreversibility condition. Firstly, it is of interest to investigate whether the ideal diffusion or reaction-limited aggregation universal behavior can be observed for the initially polydisperse practical system of basic yttrium carbonate as well. The fractal structure of basic yttrium carbonate aggregate cluster was observed using transmission eletron microscopy. The aggregation kinetics of basic yttrium carbonate colloids was studed using dynamic 1ight-scattering techniques. At 1.00mol/l NaCl solution the fast diffusion-limited aggregation behavior was observed with an increase in the aggregate size over time described by a power law. The aggregates are characterized by a fractal dimension D=1.82. The disordered and ramified cluster is consisted of primary colloidal particles and tenuous and more open. These are in good agreement with those observed for other colloidal system such as colloidal gold (1.86), silica (1.85) and polystyrene latex (1.82) in diffusion-limited aggregation from the static and dynamic light scattering by Lin. Therefore ideal diffusion-limited aggregation behavior can be observed in practical polydisperse system as well. Smoluchwski and fractal theories were used to obtain the aggregation rate constant for initially polydisperse system for the first time.

本论文研究胶粒的非平衡不可逆聚集动态学，分为两个部分，第一部分是通过实验研究一个新的初始多分散的碱式碳酸钇胶粒实际体系中，聚集标度性质的普适性，即使用透射电子显微技术观测聚集粒子簇的分形结构，使用动态激光光散射研究碱式碳酸钇胶粒的聚集动力学，胶粒带电而产生静电排斥作用使得碱式碳酸钇胶粒处于稳定状态，当加入电解质NaCl溶液时，碱式碳酸钇胶粒间的Debye-Hückel屏蔽距离缩短，从而降低静电排斥能垒，引起胶粒发生不可逆聚集，加入电解质NaCl的浓度为1.00mol/l时，碱式碳酸钇胶粒进行快速聚集，经历扩散控制聚集机理，形成结构疏松、更为开放的分形聚集粒子簇，其分形维数为1.82，碱式碳酸钇胶粒聚集增长动力学遵循幂函数增长规律，与Lin等使用静态激光光散射和动态激光光散射测量硅胶(1.85)、金胶(1.86)和聚苯乙烯胶乳(1.82)在扩散控制聚集状态形成聚集粒子簇的分形维数值以及粒子簇聚集增长的动力学规律相一致，表明胶粒聚集标度性质的普适性质在初始多分散的实际体系中也是存在的，首次由动态激光光散射的实验数据得到初始多分散胶粒分形粒子簇的聚集速率常数，并且其值与Smoluchowski聚集速率理论预期相符。

Silica gel, montomorillonite, desiccant sachet, cargo dry desiccant, humudity indicating card, temperature and humudity recorde.

6A13 硅胶干燥剂，蒙脱石干燥剂，小包装干燥剂，集装箱干燥剂，湿度指示卡，湿度追踪仪。

Objective To develop a RP-HPLC method for the enantiomeric separation of indapamide on a new chiral column CHIRALCEL OD-RHcellulose tris(3,5-dimethylphenylcarbamatecoated on a5μm silica-gel substratefor pharmaceutical study of indapamide.Methods To obtain optimistic method for the enantiomeric separation of indapamide,the inferences of the composition of mobile phase,the flow rate and the temperature on the enantiomer retentivity and selectivity were examined and discussed.

目的采 用新型反相手性色谱柱CHIRALCEL OD-RH(纤维素3，5-二甲基苯基氨基甲酸酯涂敷在5μm硅胶上)，建立吲达帕胺对映体的反相高效液相色谱拆分方法，为研究吲达帕胺手性对映体药代动力学提供基础。

In addition, the adsorption behavior of rhodamine 6G (R6G) at silica/water interface was also concerned.

此外，还对罗丹明6G(R6G)在石英/水界面上的吸附进行研究，进一步认识咕吨染料在界面的情况。

Rhyolite is an igneous rock, rich in silica.

流纹岩是火成岩，富有在硅土里。

Rubber Factory is based on a professional production for various areas of use of rubber, I plant the silica gel products in line with European standards of food hygiene.

日基橡塑厂是一间专业生产适合各种不同领域之用的橡胶制品，我厂的硅胶产品符合欧洲食品卫生标准。

It was found that the addition of silica can effectively inhibit the growth of crystalline size and the phase transformation from anatase to rutile, moreover, promote the generation the Br?

通过以上表征发现，硅的加入可以显著地抑制所制备的催化剂的粒径的生长和晶型的转变，并且可以在催化剂的表面产生Br？

This experiment goes like this: with the operation of from anterior neck, Embedded the pressure Saccule which is converted by the silica gel catheter in canine cervical vertebral body and then infuse slowing gradually certain amount of X ray contrast medium to form the gradual chronic pressure on the ventral lateral spinal cord so as to reach the pathology effect of the pressure on the segment imitation the spinal cord.

本实验采用硅胶导尿管改制成的压力球囊，经颈前路手术，在成犬的椎体内置入压力球囊，逐次注入一定量的X线可显影的液体，形成颈段脊髓慢性渐进性压迫，达到了节段解放军总医院军医进修学院硕士研究生论文中文摘要性模拟颈脊髓腹侧慢性受压的病理效果。

Taiyuan can be rich in minerals, mainly iron, manganese, copper, aluminum, lead, zinc and other metal ore and coal, sulfur, gypsum, vanadium, saltpeter, fire-resistant clay, silica, limestone, dolomite, sand stone, such as the United States and non-metallic minerals.

太原矿藏堪称丰富，主要有铁、锰、铜、铝、铅、锌等金属矿和煤、硫磺、石膏、钒、硝石、耐火粘土、石英、石灰石、白云石、石美砂等非金属矿。

Hanna: That's over now, isn't it?

都结束了，对吗

You must be ill. You look so pale.

你一定是病了，你的脸色苍白。