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The antimonydoped tin oxide nanoparticles were synthesized at 240 ℃ for(17 h) by the complexing hydrothermal oxidation method using stannate,antimony white and sulphuric acid as the starting materials,sodium hydrotartrate as the complexing agent and hydrogen peroxide as the oxidant.

以锡酸钠、锑白和硫酸为原料,酒石酸氢钠为配合剂,双氧为氧化剂,采用配合热氧化法在热氧化温度为240℃和热保温时间为17 h时,合成单分散性的蓝色锑掺杂二氧化锡粉末,用差热分析、红外光谱、X射线衍射和透射电镜对所制得的粉末进行表征,并对ATO纳米粉体的配合热氧化合成机理进行探讨。

In chapter one, we introduced Ylides in brief and reviewed the methods 、 mechanisms and stereochemistry of the Wittig reaction.

第二章相中的Wittig反应主要是半稳定Ylide和苯甲醛及各种取代苯甲醛在相中的Wittig反应作了初步探索,考察相中的反应条件,如反应时间,反应温度以及碱对相Wittig反应的反应产率和立体化学影响。

High-purity strontium carbonate, six water strontium chloride, nitrate strontium, strontium hydroxide, acetic acid strontium, strontium fluoride, hydrogen phosphate strontium, strontium peroxide, high-purity barium carbonate, barium acetate, high-purity hydrogen and oxygen in water 8 Barium, industrial-grade eight water barium hydroxide, barium peroxide, four water chlorination products such as the annual output of manganese 8,000 tons.

高纯碳酸锶,六氯化锶,硝酸锶,氢氧化锶,醋酸锶,氟化锶,磷酸氢锶,过氧化锶,高纯碳酸钡,醋酸钡,高纯八氢氧化钡,工业级八氢氧化钡,过氧化钡,四氯化锰等产品年产量8000吨。

Different water bath and bath-time on the extraction plants in leaf protein Abstract :In the water bath for 70,80,90 ℃ for not using hot water bath time extracting heat No.2 Stylo leaf protein, and in which the crude protein content .

不同浴温度和浴时间对提取柱花草叶蛋白的影响摘要:在浴温度为70、80、90、100℃条件下用不浴热时间提取热研2号柱花草叶蛋白,并测定其中粗蛋白质的含量。

Hydrophobically associating water-soluble polymer-based synthesis is difficult and not easily characterized, in part to hydrophobic chains connected to the water-soluble polymer, the general use of micellar copolymerization, or the use of the large surfactant monomer to copolymerization, polymer micelles need in the system by adding a large number of surface-active agent, which, after an increase of the complexity of the process.

缔合型溶性高分子很难合成,且不易表征,把疏部分连接到溶性聚合物链上,一般采用胶束共聚合或者使用具有表面活性的大单体进行共聚,胶束聚合需要在体系中加入大量的表面活性剂,这就增加了后处理过程的复杂性。

Nowadays the single tube and single-unit hydroelectric station have been used widely and skillfully, but it is necessary for some large hydropower stations to use tailrace bifurcated tubes, just as Xiaolangdi, Xiangjiaba, Baishe project and so on. So it is significant to study the transients of long tailrace tunnel with tank or without tank.

对于尾系统,单管单机的布置方式比较成熟,尾岔管的布置方式目前在大型电站中用的较多,如小浪底、向家坝、百色等,因而研究其在有尾调压井和无尾调压井的情况下的过渡过程,很有实用意义。

All bottled waters such as sparkling water, tonic water, flavored water, and mineral water are WATER

所有的瓶装都是可饮用的(如苏打、开胃、风味特饮和矿泉)。

The source of the Tsushima Warm Current will change in the year: in January and February the main source is the flow from the Kuroshio; from March to August, the main source gradually changes from the Kuroshio to mixed water of the flow from the Taiwan strait and the Changjiang diluted water; after August, the main source changes back to be the Kuroshio.

对马暖流的来源全年均有所变化,一、二月以黑潮为主;三月到八月,来源逐步从黑潮转变为台湾海峡北上海流以及长江冲淡的混合;八月到九月,来源重新转变为黑潮

According to the international standard ISO7027,we can know that the measurement of turbidity mainly use the optical turbidimeter measurement,it contains the scattering-light method and transmitted-light method. The scattering-light method has application in measurement for low turbidity water and also can used in high turbidity water.On the other hand,the transmitted-light method is more suitable for high turbidity measurement.

根据国际标准ISO7027可知,现今测量的浊度主要以光学浊度仪测量法为主,主要包括散射光法和透射光法两种,散射光法主要用于测量低浊度,但也可用于高浊度的测量;而透射光法更适合于测量高浊度

The method comprises steps as follows:(1) Chinese herbal medicines are taken and added with purified water for soaking, with the material-to-water ratio of 1:10;(2) the Chinese herbal medicines with the purified water are placed in a microwave heating system; the power of the microwave and the radiation extraction time are controlled;(3) leaching liquor is poured out and put into a centrifuge for centrifugation to obtain the Chinese herbal medicine water extract;(4) polyethersulfone ultrafiltration film is arranged in an ultrafilter; the Chinese herbal medicine water extract is poured into the ultrafilter and placed in a normal pressure type microwave heating system; and (5) the power of the microwave and the radiation extraction time are controlled and the pressure of nitrogen is regulated so as to obtain the purified Chinese herbal medicine water extract.

本发明公开了一种利用微波辐射改善中草药提液膜超滤过程的方法,该方法由以下步骤完成:(1)取中草药材以1∶10的料液比加入纯净,浸泡;(2)置于微波加热系统,控制微波功率和辐射提取时间;(3)倾出浸提液;然后用离心机离心得中草药提液;(4)超滤器内置有聚醚砜超滤膜,将中草药提液倒入超滤器并置于常压式微波加热系统;(5)控制微波功率和辐射提取时间,调节氮气压力,得到纯化的中草药提液。

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推荐网络例句

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。