磺酸

At present the problems of lowering the prices of perfluorosulfonated ionomer membranes used in proton exchange membrane fuel cells and simplifying the operating systems of PEMFC are deeply concerned.

目前降低质子交换膜燃料电池中所用的全氟磺酸膜的成本和简化电池操作系统一直是人们关注的问题。

Using sulfonated EPDM ionomer as coating material for controlled release of urea, a primary research on some factors that influence the controlled release rate has been completed.

用乙丙三元胶的磺酸型离聚物作为包膜材料，研究了其对尿素的缓释作用，考察了离聚物的合成条件以及环境温度对尿素释放速率的影响。

In the first chapter, a review is provided on the development and present state of liquid crystalline ionomer , blenlds and hybrids composite materials.

检索结果发现在液晶聚合物的末端引入对羟基偶氮苯磺酸离子的主链热致液晶离聚物尚未见报道。

Meanwhile,the behavior of the complexation between the sulfonated SEBS ionomers and pyriding-containing random coploymers both in dilute solution and in bulk was evidenced by an abnormal increase of the viscosity and Tg .

SEBS磺酸盐离聚物与含吡啶基的无规共聚物在稀溶液和本体中能形成分子间的络合物，这从共混物溶液粘度的反常增大和本体Tg的显著增加得到了证明。

In the SDBS experiment, no result could indicate that genomic DNA was damaged by SDBS, no matter L. japonicas was exposed to SDBS or DNA was incubated with SDBS. Fig 3, Tab 1, Ref 22

在十二烷基苯磺酸钠污染实验中，不论是作用于鲈鱼个体，还是直接污染其DNA，用所筛选出的6条引物扩增结果未发现对基因组DNA造成损伤，图3表1参22

The mobile phase was a mixture of 20 mmol\L methylsulfonic acid and 20% acetonitrile\water at the ratio of 87∶13.

流动相为20mmol\L甲基磺酸-20%乙腈水混合溶液(体积比为87∶13)，流速为1.0mL\min

The phenomenon lased for three weeks, and was healed after three weeks.

其中当2，4，6-三硝基苯磺酸剂量为100 mg／kg时作用达到高峰。

Objective To study the effect exerted by sodium dodecyl sulfate on the resonance light-scattering based on histone and DNA complex and to explore the orderliness of interaction in the three compounds.

目的 研究十二烷基磺酸钠对组蛋白与DNA共振光散射强度的影响，探讨三者相互作用规律。

By one-pot method,with p-toluenesulfonic acid as catalyst,trimethyl orthoformate and cyclohexanone reacted in isopropanol to form 1,1-dimethoxycyclohexane,which,without separation,reacted furthur with isopropanol to form the title compound by distilling off the low-boiling product.

用一锅法，以对甲苯磺酸为催化剂，在异丙醇中原甲酸三甲酯与环己酮反应，其产物不经分离直接与异丙醇交换，得到1，1-二异丙氧基环己烷。

So it can keep invariable bulk phase transition within a wild neutralization range;AB-I and AB-II show the similar phenomenon in bulk phase transition,but not very similar in methanol and ethanol.Perhaps this is because of competition between hydrophile and lyophobic.

AB-I样品分子链上的磺酸基团(-SO3-)完全电离，与树脂网络外部溶液浓度差始终较为恒定，所以能在较宽的中和度范围内(40%～80%)保持较为恒定的相变体积；AB-I和AB-II在电解质溶液中表现出类似的体积相变规律，而在甲醇、乙醇中表现出不尽相同的相变规律，这可能是由于AB-II中存在亲水力和疏水力相互竞争作用的结果。

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％。