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在溶液中

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Immerse the items in the solution for 15-30 minutes, depending on the degree of soiling.

根据污垢程度,将待洗的器皿浸泡在此溶液中15-30分钟。

Soluble immobilized papain can fully solubilize above the pH 5.5.The optimum pH range of papain was narrow,and its optimum temperature and Km value were all

可溶性固定化木瓜蛋白酶能够在pH5.5以上的溶液中完全溶解,最适作用pH值范围变窄,最适作用温度和Km值升高;热稳定性和酸碱稳定性均明显增强。

Soluble immobilized papain can fully solubilize above the pH 5.5.The optimum pH range of papain was narrow,and its optimum temperature and Km value were all higher than before.Its thermodynamtic stability and the acid-base stability were also strengthened.

可溶性固定化木瓜蛋白酶能够在pH5.5以上的溶液中完全溶解,最适作用pH值范围变窄,最适作用温度和Km值升高;热稳定性和酸碱稳定性均明显增强。

Using thienyl stannane and palladium-catalyzed, 1,4-di(5'-carbaldehyde-thiophen-2'-yl)-2,5-dioctyloxy-benzene was synthesized by four steps, the structure was determined by NMR, IR and elemental analysis.

由于目标产物(5)本身具有多芳环共轭体系,其荧光效应相当强烈,在氯仿溶液中紫外-可见吸收和荧光发射的最大波长分别为413nm和477nm,固态荧光发射波长为504nm

It was discussed in theory that the various equilibriums of stannous chloride affect on reduction potentials under the different PH val- ue solution with the experiment of orthogonal design.

并通过正交试验方法对还原剂的电势变化规律进行了理论探讨;着重探讨了在不同PH值条件下氯化亚锡溶液中存在的不同平衡状态对还原电势的影响。

Preliminary experiments show that the rate of condensation of sulfanilic acid with 4-[4-(4-Ni-tro-2-sulfostyryl)-3-sulfophenyl-azo]-3-methyl-1-phenyl-5-pyrazolol is slower than those of p-phenylene diamine a...

对氨基苯磺酸和4-[4-(4-硝基-2磺基苯乙烯)-3-磺基苯偶氮]-1-苯-3-甲-5-羟吡唑在稀的氢氧化钠溶液中缩合的速度,较对苯二胺及对氨基苯甲酸为慢。

The ligand of the chiral Schiff base and acetylacetone vanadium are subjected to complexation in situ, hydrogen peroxide is taken as an oxidant, aryl alkyl thioether asymmetric oxidation reaction is catalyzed in a toluene or dichloromethane solution under low temperature or room temperature, enantioselectivity of chiral sulphoxide is 72 percent to 95 percent ee, and yield is 42 percent to 83 percent.

将上述手性西佛碱配体与乙酰丙酮氧钒原位络合,采用双氧水为氧化剂,在甲苯或二氯甲烷溶液中低温至室温下催化芳基烷基硫醚不对称氧化反应,手性亚砜的对映选择性为72%-95%ee,产率为42%-83%。

Layered manganese oxide was delaminated in a tetramethylammonium hydroxide by sonicating treatment for 20 min.

层状氧化锰在氢氧化四甲基胺溶液中超声处理20分钟后,层状氧化锰剥离成纳米层胶体分散液。

In this sense, IDA plays dual effects, tridentate chelating to Cu(2) and bridgebetween two Cu(1) andCu(2).3 Metal complexes were selected as the appropriate for the study of cleavage plasmid pBR322DNA by gel electrophoresis technique. The results showed Ni and Mn complexes could cleave effect- ively DNA in the presence of H2O2 at physiological pH and temperature, whereas individual Zn complex could cleave effectively DNA.

通过电泳实验研究了一系列金属配合物与pBR322DNA的作用,发现在Tris-HCl缓冲溶液中,生理条件下,镍、锰配合物在共反应物H_2O_2存在下能够很好的断裂DNA,而Zn配合物单独作用就能够使DNA由ccc型转化为oc和linear型。

Results:Adding water,alcohol and triethanolamine and when the temperature is at 20℃ make the titration end-point keen and easy to decision.

结果:滴定的温度20℃、在被测溶液中加入适量的水、乙醇和三乙醇胺能使滴定终点突跃明显,终点易于判断。

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Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

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