提纯

The microstructures of Fe40Ni40P14B6 alloy solidified at different undercooling have been obtained by use of fluxing technique and holding at different temperatures.

采用玻璃包覆法提纯和在不同温度下保温，获得了Fe40Ni40P14B6合金熔体的凝固组织，研究了过冷度对凝固组织的影响。

Some photos are comparatively more sentimental than others. Which one do you like better, simple scenes or complicated ones?

一些照片相较其它更为提供了一种情调，你更喜欢提纯的画面还是复杂的画面？

Draw and add the solvent only to once, recycle in a set of sealed equipment, the solvent in the dregs of a decoction can be retrieved out basically, so solvent consumption than many of draw pot to be 30% more than less only, the consume can reduce 50-70%, it is better for draw with the organic solvent, active principle in the sublimating of the traditional Chinese medicine.

提取只加1次溶剂，在一套密封设备内循环使用，药渣里的溶剂基本上能回收出来，故溶剂用量比多只提取罐少30%以上，消耗率可降低50～70%，这为用有机溶剂提取，提纯中药中有效成份铺平了道路。

This article is mainly an introduction to the route for synthesizing this compound and the method of its purification.

本文主要介绍了该化合物的合成路线及提纯方法。

In the medical isotope reactor to separate and purify the medical isotope 99Mo and 131I, the reactive heat is constantly generated in the process of reaction, associated with the production of fission gas. In order to control the average temperature (usually≤80℃) of the reactor to prevent the sample from volatilizing, the cooling system of the reactor need to be designed carefully.

在使用医用同位素反应堆分离提纯医用同位素99Mo和131I时，由于反应过程中会不断产生热量并伴随裂变气产生，为了控制堆内平均温度(通常≤80℃)以使样品不致挥发，这就需要精心设计反应堆的冷却系统。

In order to improve the content of phosphatidylcholine, a study has been carried out on the use of acetone and alcohol to extract PC from soybean lecithin .

研究了以浓缩大豆磷脂为原料，采用丙酮和乙醇作溶剂，经丙酮脱油、真空干燥、乙醇抽提、减压蒸馏浓缩制备高含量磷脂酰胆碱的提纯工艺。

The result indicated that, the optimum parameters of organic solvent extraction pepper oil are acetone to organic solvent, chili powder fineness of 40 meshes, solid-liquid ratio of 1∶6, the extraction time is 40 min.

结果表明，制备辣椒油树脂的最佳工艺条件为：丙酮作有机溶剂，辣椒粉末细度为40目，固液比为1∶6，浸提时间40min；辣椒油树脂提纯辣椒红色素的超临界萃取条件为：萃取釜温度35℃，萃取压力30MPa，时间2.0h。

Urine was collected for 24 hours exactly after the intravenous dose of 〓. Urinary calcium was precipitated by using ammonium oxalate.

收集给药后24小时内的全部尿液，并用草酸铵沉淀法提纯尿液中的钙。

Results 61 mg IgY was extracted from one egg. The results of SDS-PAGE and Western blotting demonstrated that the IgY contained one major protein band with molecular weight of 130 000 and could be recognized by SEA.

结果 海兰母鸡经SEA首次免疫后35 d，每枚蛋经提纯后可得到约61 mg抗体，经SDS-PAGE和Western blotting分析，纯化的IgY有1条主要蛋白带，相对分子质量为130 000，并可被SEA识别。

The process includes the following steps: dissolving bromine in halogenated hydrocarbon, dropping the bromine solution into reactant system comprising pentabromo toluene, halogenated hydrocarbon, free radical initiator and hydrogen peroxide at 50-65 deg.c, and heating to 60-78 deg.c for reflux reaction until the reactant system becomes transparent; filtering the resultant to obtain solid product, washing with carbon tetrachloride and water separately and vacuum drying to obtain pentabromo benzyl bromide.

具体步骤为：将五溴甲苯、卤代烃、自由基引发剂和过氧化氢组成的反应体系加入到三颈瓶中，将0.07～0.1mol的溴溶于50ml卤代烃配成溶液，在50-65℃温度下滴加到反应体系中，滴加时间为50-70分钟，然后升温至60-78℃温度下回流反应，至反应体系逐渐变透明，且不再产生气泡时，将所得产物过滤，得到固体产物，分别用CCl 4 和水洗涤，真空干燥，即得到五溴苄基溴；其中，五溴甲苯与溴的摩尔比为1∶0.7-1∶1.0，溴与过氧化氢的摩尔比为1∶1.0-1∶1.4，自由基引发剂加入量为五溴甲苯重量的1-10％，卤代烃的加入量为反应体系体积的40％-100％，所用溶剂可以直接进行下一批反应，不需要更换溶剂或蒸馏提纯。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。