盐溶液

Suitable phosphate buffer and acetate buffer were selected for the separation of acid and basic proteins, respectively.

通过实验和理论分析确定了分离酸性和碱性蛋白质所需的磷酸盐和醋酸盐缓冲溶液体系。

Translation - urea characteristic The urea is one kind of achromatic color, tasteless, the odourlessness acicular or the orthogonal prism build crystallizes, in the actual production is granulated for the white or the tint; The granularity may be possible to be small greatly according to enterprise's characteristic; When heats up to 132.7℃ starts to melt, the solid urea density is 1.335g/cm 3, dissolves in the water and the few organic reagents, the urea assumes the alkalescency, may live the salifying with the acid function, when the temperature surpasses 60℃, the urea in the acid, the alkalinity or the neutral solution has the hydrolisis.

问题补充：尿素是一种无色、无味、无臭的针形或正交棱柱体形结晶，实际生产中为白色或浅色颗粒状；粒度则根据企业的特点可大可小；当加热到132.7℃开始熔化，固体尿素密度为1.335g/cm 3，溶于水和少量的有机试剂，尿素呈微碱性，可与酸作用生成盐，当温度超过60℃时，尿素在酸、碱性或中性溶液中发生水解。

Using Rudbeckia hirta,Coreopsis drummondii,Callistephus chinensis, Althaea rosea ,four kinds of ornamental plant seeds as the test materials,treated with NaCl and Na2SO4 double salt solutions of different concentrations,and the relative germination percentage,root length,simply vigour index,synthetic inhibitory effect were measured to determine the effect of salt stress on seed germination.

以黑心菊、金鸡菊、翠菊、蜀葵4种花卉种子为材料，研究不同浓度NaCl和Na2SO4复盐溶液处理下种子及幼苗的耐盐性，并观察其相对发芽率、根长、简易活力指数、综合效应。

Examples are provided by the following preparations: arsenious sulphide from arsenious acid and hydrogen sulphide: gold or silver sols by reduction of the corresponding salts of gold or silver, silver chloride from very dilute solutions of silver nitrate and sodium chloride.

例子由以下准备提供：亚砷硫化物从亚砷酸和氢化硫：金或银sols 由金子或银，银色氯化物对应的盐的减少从非常硝酸银和氯化钠的稀溶液。

Maize inbreeds of 14 varieties were treated with NaCl solutions of different concentration and their salinity tolerance during seedling emergence stage were analyzed.

以14个玉米自交系为材料，用不同浓度NaCl溶液模拟盐胁迫环境对其芽苗期耐盐性进行了鉴定。

It showed that the capability of flocculation of quaternary ammonium salt of alkali ligninto black acid ATT was good.

对于麦草碱木质素季胺盐，实验表明：木质素季胺盐对酸性黑ATT染料溶液的絮凝效果较好。

When the elution was done with buffer of low salt concentration, the contribution of electroosmotic flux to the mass transfer became significant.

当采用高盐浓度洗脱溶液时，电渗的影响作用很小，电迁移改变了停留时间，因此可以通过选择适宜的电场方向来提高分离精度；当采用低盐浓度洗脱液时，电渗有效地促进了洗脱液与介质颗粒间的传质，提高了洗脱效果。

Dorsalis by salting out, ion exchange chromatography, and gel filtration chromatography. By salting out the egg homogenate, SDS-PAGE analysis revealed that the Vns were mainly precipitated in a 50~70% ammonium sulfate solution. The salted-out proteins were further purified by ion exchange chromatography, and the result showed that Vns were mainly eluted with a 0.3~0.5 M sodium chloride gradient. Finally, the elutes of ion exchange chromatography were refined by running them through gel filtration chromatography to obtain purified Vns. SDS-PAGE separated the 48- and 51-kDa purified Vns, and used them as antigens to raise polyclonal antibodies.

利用硫酸铵盐析法初步分离果实蝇卵中的蛋白质，以SDS-PAGE蛋白质电泳分析得知，卵黄蛋白主要在硫酸铵溶液浓度为50~70%时被沉淀出；盐析沉淀所得之卵黄蛋白，再以离子交换层析法进一步纯化显示，卵黄蛋白主要会在0.3~0.5 M氯化钠的浓度范围间被析出来；再将析出液浓缩后，经凝胶过滤层析法做最后的纯化，即获得纯化之卵黄蛋白。

Under a pressure drop of 0.4 MPa, the water flux of the prepared membrane is 11.1 Lm^(-2)h^(-1), and the retentions of various salts by the prepared membrane are less than 40%, while the retention of polyethylene glycol 1000(PEG 1000) is up to 94.02%.

在0.4MPa下，膜对无机盐的截留率均低于40%，对PEG1000的截留率则达到了94.02%，该膜的纯水通量为11.1Lm^(-2)h^(-1)；能截留低分子量有机物而透过盐，表明该膜可以用于有机物与盐混合溶液的分离。

Anodic oxidations may be carried out with alkaline solutions of nitrate s, perchlorates, fluoroborates, or fluorosilicates.

在硝酸盐、高氯酸盐、氟代硼酸盐或氟代硅酸盐的碱性溶液中通过阳极氧化作用可制备PbO2。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。