查询词典 silica

The effects of equilibrium time,acidity of the solution,temperature,concentration of redox reagents on the adsorption of neptunium by silica gel were carried out.

进行了吸附平衡时间、酸度、温度、氧化还原剂浓度等条件对硝酸溶液中Np、Np和Np在硅胶上吸附的影响的实验，与吸附时同酸度条件下的洗脱实验，用浓度为3mol／L的硝酸作为解吸剂的解吸实验。

Opal is a noncrystalline form of the mineral silica which, despite its amorphous structure, displays an amazing degree of internal organization.

蛋白石是非晶形成的矿物质矽的，尽管它无定形结构，显示了惊人的程度的内部组织。

The proteins caused haze in the beer during storage. C-I type of silica hydrogel produced in specific method was suitable to stabilizing beer and noneffective on other constituents and the character of the beer.

试验筛选出适用于啤酒的，经特定制备方法制得的C-Ⅰ型硅凝胶，其对啤酒中高分子含氮物质具有较强的选择性吸附作用，可有效地提高啤酒的非生物稳定性，且不改变啤酒的其它纽分和外观质量。

Bare nonporous silica particles with diameter around 1 μm were prepared.

制备了1 μm无孔硅胶颗粒。

Was packed electrokinetically and the separation performance of basic compounds was investigated in the pressurized capillary electrochromatography system using 1 μm nonporous bare silica spheres as stationary phase and acetonitrile-water as mobile phase. The effects of the composition of the mobile phase, the concentration of the buffer, pH value, applied voltage and so on on the separation performance were investigated.

以乙腈-水体系作为流动相，详细考察了碱性化合物在该色谱柱上的加压电色谱分离性能，讨论了流动相比例、缓冲液浓度、pH值及操作电压等因素对分离的影响。

Purification and analysis of AT-toxin Firstly, we detected the components of protein and nonprotein, the results showed that AT-toxin is a nonprotein. We have carried out the liquid chromatogram analysis of the toxin. The result indicates that there are many components in this toxin and there are four kinds of components which content is more than others. At last, we have the experiment of separating the cpmpositions with the silica gel and we get four components which are active.

AT-毒素的初步纯化与分析为确定AT-毒素的组分，首先对毒素的蛋白质和非蛋白质组分的毒性进行了测定，结果表明：AT-毒素活性组分为非蛋白质；对毒素进行硅胶G薄层层析，初步分离得到10种组分，其中四种组分具有活性：组分Ⅵ、Ⅶ、Ⅷ、Ⅸ，初步说明了该毒素含有多种组分；进一步对该毒素进行液相色谱分析，也发现该毒素含多种组分，其中四种组分峰高和峰面积较大，含量较高；其致毒活性可能是由这些组分协同作用的结果，它们之间可能存在正协同或负协同作用关系。

Arkansas Washita natural stones are genuine silica "Novaculite" from Arkansas.

阿肯色州的瓦希塔天然磨石是真正的来自阿肯色州的主成分为均密石英岩的硅石。

In fact, the mine is made up of rhyolite and obsidian that has gas pockets in it, and silica which is necessary for much gemstone production and was carried to its.

事实上，地雷是由流纹岩和黑曜石它已在天然气口袋，这对硅很多宝石生产进行必要的和它的。

Nepetalactone, the primary component of catnip oil, were extracted by the using method of simultaneous distillation-extraction and separated by using silica gel chromatography column. To compare the repellency of nepetalactone and DEET on mosquitoes, topical bioassay method on the skin and a cage olfactometer were employed to assess the effective protection time and the spatial repellency.

采用同时蒸馏萃取及硅胶柱层析法从猫薄荷Nepeta cataria植物中提取、分离制得驱蚊有效成分假荆芥内酯，并采用个体涂肤有效保护时间测定法及风洞空间驱避效果测试法，对假荆芥内酯与避蚊胺的驱蚊效果进行了对比试验。

Then again , although made of the same silica material as glass , opal is quiet different and that difference is what makes this precious stone so wonderful .

再说，虽然取得了相同的二氧化硅材料为玻璃，蛋白石是安静的不同，以及不同的是，是什么使这一珍贵的石头，所以美好。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷