使提纯

On the basis of inheriting the traditional handicrafts,our company-makes the craftwork by using the well-known porcelain from jingdezhen,boccaro and precious jade as the principal part, at the same time, gold,silver,copper and tinas the main inlays as well and by the process of decades of crafts like purify-ing ,chasing,inlaying,polishing and plating 24 karta bullion .

该产品采用举世闻名的景德镇瓷器、宜兴紫砂、名贵玉器为主要载体，以金、银、铜、锡为主要镶料，经过提纯、雕镂、抛光、镀24K纯金等数十道工艺精工制作。使产品华贵高雅具有显明的民族文化特色和艺术魅力，集观赏、实用、收藏于一身，是现代技术与古老手工艺的完美结合。

And to make the product be easy of purification, the excess of amine was reduced to 50% from 150%. Then the diiodoalkane reacted with dialkylmethylamine into diquaternary ammonium iodide, and obtained three diquaternary compounds whose spacer groups were -(CH2)6-, N,N"-dimethyl- N,N,N",N"-tetraoctyl-1,6-hexane diammonium diiodide, N,N"-dimethyl-N,N,N",N"-tetradecyl-1,6-hexane diammonium diiodide, N,N"-dimethyl-N,N,N",N-tetradodecyl -1,6-hexane diammonium diiodide.

对于更长间隔链的双子型季铵盐，一方面为了加快亲核取代反应速率，先将1，6-二氯己烷、3-氧杂-1，5-二氯戊烷转化成1，6-二碘己烷、3-氧杂-1，5-二碘戊烷，另一方面为了降低产物提纯的难度，将叔胺的过量由150%降到50%，使二碘代烷与双长烷基甲基叔胺在相同的温度下、反应相同的时间，经过相同的后处理，得到3个间隔链为-(CH2)6-的双子型季铵碘化物，(C8H17)2N+(CH3)(CH2)6 (CH3)N+(C8H17)2·2I-、(C10H21)2N+(CH3)(CH2)6(CH3)N+(C10H21)2·2I-和(C12H25)2N+(CH3)(CH2)6(CH3)N+(C12H25)2·2I-。

When different materials mixed,the mixture will have a mixed melting point of mixture ,and the mixed melting point of mixture is different from the intersoluble solutions.we separate the intersoluble solutions by different melting piont of intersoluble solutions when separate temperature is flexible temperatureThese intersoluble solutions different in melting point, the method would make the high melting point material became solid while the low melting point material still be liquid by adopting cryogenic treatment with stirring so as to meet the requirement of purifying these two solutions.

这种分离方法的特点是利用两种互溶性物质具有不同的熔点，通过低温处理，并同时加以搅拌，震荡，使高熔点物质和低熔点物质形成固液混合体，再对固液混合体进行离心分离得到高熔点的固体和低熔点的液体，从而达到浓缩、提纯两种物质目的。

The main objective of this research project is to modify the Methyl-Acetylene/propadiene selective hydrogenation reaction system of the No.3 Naphtha Cracker in CPC. The original gas phase reaction system was redesigned to a liquid phase reaction so that higher propylene selectivity was achieved and lower rates of propane and green oil were produced. To recover effectively the higher production of valuable propylene from the reaction system, the following fractionator was also redesigned.

本研究之目的在於修改中油公司三轻工场老旧的甲基乙炔／丙二烯选择性氢化气相反应系统，使成为液相反应系统，藉由液相反应的优异性，提高由MAPD氢化得到丙烯之选择率，同时降低丙烷及绿油产率，以增加丙烯产率，另亦修改丙烯精馏系统，以提升蒸馏塔提纯之效率。

Making use of propanone as solvent in this paper,it is decreased by 50% and 60% that SnCl_2 and 35%HCl consumption that the chloromethylenation-SnCl_2/HCl reduction process transform nature vitamin E into α-vitamin E,purification α-vitamin E is easier.

利用丙酮作溶剂，使氯甲基化 SnCl2/HCl还原工艺转化天然维生素E的SnCl2消耗降低了50%、35%盐酸消耗降低了60%，α VE提纯更容易。

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。

And 91. 37%, respectively. This noticeable metallurgical result has been used for designing and constructing Jiepai kaoline concentrator by the Changsha Design and Research Institute of Ferrous Metal Mines.

大量文献资料表明，高梯度磁选是提纯高岭土的最有效方法，而研制大型高梯度磁选机是使该项技术在高岭土选矿中获得大规模应用的先决条件。

There are generally two main drawbacks in the currently reported methods of dissolving wool, one of which is the low efficiency of dissolving fibers; only the wool keratin solutions with low concentration, low viscosity, relatively low molecular weight and low conversion rate have been obtained; the other drawback is, as mentioned in many patents, the wool keratin solution needed to be concentrated, purified, and coagulated into wool keratin powder, through back-permeation, dialysis techniques, in order to facilitate the application in the subsequent processes.

目前研究报道的羊毛纤维溶解方法都普遍存在有两个主要缺陷：其一是对纤维的溶解效率低，只能获得低浓度、低粘度、较低分子量、低制成率的羊毛角蛋白质溶液；其二则是因浓度低而在多数专利中需要通过反渗透、透析方法使溶液浓缩、提纯、固化成羊毛角蛋白质粉末，以方便后续加工使用。

The results showed that the purified recombinant protein under denaturing conditions was refolded in Ni-NTA column by using refolding buffer.

实验结果表明，在变性条件下纯化的样品在柱上不经洗脱，直接用复性液洗涤6h，可以使EKLC在得到提纯的同时实现复性，得到了电泳纯度为96％的具有生物活性的EKLC，最高活性为712U。

In this paper, the materials for experiments of montmorillonite are prepared by Xinjiang smectite, In the country, Smectite as raw mineral materials, is done to sublimate to the content of montmorillonite more than 95% up through the experiment, concentrate performance is improved, and met the requirement of medical auxiliary materials; And then adopt the activator , glue to congeal the pharmaceutical and congeal the gummed test and prepare inorganic mineral gel, gel viscidity reaches above 40mPa·s.

本课题试验选用国内蒙皂石储量最大的新疆蒙皂石作为矿物原料，通过加入分散剂高速分散方法来进行提纯处理，使其蒙脱石含量提高到了95%以上，精矿性能得到改善，达到了药用辅料的要求；再采用活化剂、胶凝剂凝胶化试验制备无机矿物凝胶，凝胶粘度达到40mPa·s以上。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。