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Propene hydration etherification reaction catalyzed by β zeolite was studied by using in situ FT IR technique, and the effects of surface acidity on the reaction were discussed.

采用原位红外光谱技术,对β沸石催化剂上的丙烯水合醚化反应过程进行了研究,并结合催化剂的表面酸性进行了讨论。

Extra Dry Hydration Oil is a blend of oils, so it is greasy.

答:是的,水合特润油是一种混和油,也就是油脂。

If any Extra Dry Hydration Oil were to get in your eye, it may temporarily blur your vision but shouldn't cause any harm.

如果使用过程中不慎有水合特润油进入了眼部,只会引起暂时视力模糊,而不会导致眼球受损。

Artistry Extra Dry Hydration Oil provides a concentrated boost of moisture to immediately hydrate, pamper, and comfort extremely dry skin. Smooth this vitamin-rich oil on any part of the body where extra hydration is needed -- face, elbows, knees, hands, or cuticles.

取数滴极干肌肤水合特润油在指尖或手掌,利用手掌的温度令特润油暖和,涂抹于脸上或者需要滋润的身体部位:如,手肘,膝盖,手或者足部,并体验瞬间的滋润效果。

The same process was found in the reaction of STS with free electron.

丹参酮ⅡA磺酸钠同水合电子反应也遵循这个规律。

The study indicated that Ge had distinct analgesic effect.2. Irritation action of rats stimulated by haemostat inhibited and the energy metabolism of mice decreased after ip Ge total alkaloids.

钩吻总碱能抑制大白鼠由止血钳刺激所致的激怒反应,降低小白鼠机体的能量代谢,并且能协同闽下剂量的水合氯醛对小白鼠的催眠作用。

For the development of effective catalysts to be used in biomass gasification ,NiO nanoparticles were prepared by a homogeneous precipitation method involving an aqueous solution of nickel nitrate hexahydrate and urea.

为研制生物质气化用纳米N iO催化剂,文中以六水合硝酸镍为原料、尿素为沉淀剂,采用均匀沉淀法制备了纳米N iO,并利用TGA,XRD,TEM等分析手段对前驱体和产品的性能进行了表征。

The method comprises:(1) weighing lead acetate hexahydrate and thioacetamide, and preparing aqueous solutions respectively, so that the concentration ratio of Pd2+ to S is 1:(1-4);(2) adding acetic acid into thioacetamide solution to adjust the pH value to 2-4;(3) adding poly surfactant into lead acetate solution, ultrasonicating to mix uniformly and obtain a colorless and transparent sol;(4) mixing the sol and thioacetamide solution;(5) placing the mixed solution in a sealed container, irradiating by 2.5 MeV and 40 mA electron accelerator with irradiation dose of 25-40 Mrad;(6) washing the product, centrifuging for separation, and drying to obtain black PdS nanoparticles.

本发明方法的工艺过程如下:首先称取一定量的六水合醋酸铅和硫代乙酰胺,各自配制成水溶液,其浓度比为使其中的铅离子浓度与硫原子浓度的比例为1∶1~1∶4;在硫代乙酰胺溶液中加入适量醋酸调节其pH值至2~4;醋酸铅溶液中加入少量表面活性剂聚乙烯醇,然后超声振荡,混合均匀,制成无色透明溶胶;随后将溶胶与上述的硫代乙酰胺溶液混合;将该混合液置于密闭容器中,并将其放置于2.5MeV、40mA的电子加速器产生的电子束辐照下进行辐照处理,其辐照剂量为25~40Mrad;然后将反应生成物清洗,并用高速离心机离心分离,然后干燥,最终得到黑色纳米硫化铅颗粒。

The effects of different factors on the laser-induced graft polymerization on the PET surface were analyzed, and the mechanisms were discussed. The factors were: 1 Monomers with smaller molecules resulted in better modification than polymeric monomers. Acrylamide monomer was chosen as hydrophilic modifier finally; 2 Higher concentration of the monomer solution favored the graft reaction; 3 With the increasing laser fluence, the surface hydrophilicity of PET films increased at first, then decreased. More laser pulses led to a more hydrophilic surface; 4 Benzophenone as a photosensitizer hindered the graft polymerization; 5 The homopolymer retardant of ammonium iron sulfate hexahydrate in a proper concentration retarded the formation of homopolymers and promotes the graft copolymerization; 6 The solvent of monomer solution also affected the graft reaction. Different solvents functioned in different ways. Ethanol can promote the graft reaction because of the activity of hydrogen in its structure; 7 pH value of the monomer solution affects the polymerization rate, and a lower pH value was favorable to the graft reaction.

这些影响因素的作用分别为:1小分子单体的表面改性效果好,确定以丙烯酰胺为亲水性改性单体;2较高的单体溶液浓度有利于接枝反应;3激光能量密度增大,薄膜表面亲水性先显著增强,后又减弱;激光脉冲次数越多,改性后表面亲水性越强;4光敏剂BP对PET表面接枝聚合反应有阻碍作用;5适当浓度的均聚物抑制剂六水合硫酸铁铵能减少单体均聚物的生成,促进接枝聚合;6单体溶液的溶剂也影响接枝聚合的反应进程,不同溶剂的影响作用原理不同,含较活泼氢的乙醇能促进接枝反应;7溶液pH值影响单体聚合速率,pH值较低有利于接枝反应。

ZnO nanorings were prepared on a large scale by a facile solution-based method at 70 ℃ for 5 h via hexamethylenetetramine(C6H12N4) and Zn(NO3)2·2H2O as the raw materials in the presence of surfactant PAM-CTAC.

以六次甲基四胺(Hexamethylenetetramine, C6H12N4)和水合硝酸锌[Zn(NO3)2·2H2O]为原料,表面活性剂聚丙烯酰胺-氯化二烯丙基二甲基铵为形貌控制剂,采用液相沉淀法合成了ZnO纳米环。

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This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

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