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In the development of reduction clearing agent, first we selected several surfactants according to the capacity of removing the oligomers and good emulsification, then mixed these activators and obtained washing agent W. Mixing the agent H and washing agent W, the reductive clearing agent WS was acquired.

在还原清洗剂的研制中,以分散性好、对低聚物有去除作用以及良好的乳化能力为基准,选取了几种表面活性剂,然后对选取的表面活性剂进行复配,得到了助洗剂W;将还原剂H与助洗剂W复配,得到了还原清洗剂WS。

According to the strong reducibility of lithium aluminium hydride and asymmetric selectivity of binaphthol,the authors reduce camphor into D-borneol by using D-binaphthol modified lithium aluminium hydride as chiral reagent.

根据氢化铝锂的强还原性和联萘酚的不对称选择性,用右旋联萘酚改性过的氢化铝锂为手性试剂,把樟脑还原成右旋龙脑。

The best results 98% ee, 94% ee and 59% ee were obtained in silylcyanation of aldehydes, borane reduction of prochiral ketones and ketimines, respectively.

醛的硅氰化反应ee值最高达到98%,酮的硼烷还原反应ee值达94%,而亚胺的硼烷还原反应ee值只有59%。

Then we applied these chrial ligands to asymmetric borane reduction of w-bromoacetophenone and diketones.

将其应用于前手性单酮及二酮的还原中,其中双方酰化脯氨酸在1,6-二苯基-1,6-己二酮的还原反应中可获得最高为90%的ee值。

The first part is concerned with catalytic asymmetric borane reduction of aromatic ketones. Up to 83% ee could be obtained with 10 mol% Al3/BINOL2 complex as catalyst.

在不对称硼烷还原反应方面,利用BINOL作为掌性配位基与Al3组成催化系统还原芳香酮类,反应过程方便快速,最高可获得83%的镜像超越值,我们也推测了可能的反应机构并用以解释所得产物的立体化学组态。

At first, the initial COD/SO4^2- ratio and pH value were determined, and then the capability of different immobilized carders was investigated by batch experiments.

本工作以提高SRB的还原活性为出发点,通过间歇式实验首先确定适宜的初始COD/SO4^2-比值和pH值,进而探讨固定化载体对SRB还原性能的影响。

The azoreduction of hydrogels by cecal bacteria in vitro and in vivo proceeded via a pore mechanism.

凝胶体外与体内盲肠菌的偶氮还原研究表明:凝胶的偶氮还原是通过网络孔机制进行的。

The formation process of pure Cu on bronze archaeology is simulated in laboratory conditions, in which CuCl can be fully deoxidised to pure Cu for extended period of time. The same condition for the formation of pure Cu can also be provided in soil. This outcome forms the theoretical and experimental basis for restoring excavated bronze artefact from harmful patina CuCl.

用金相显微镜、扫描电子显微镜和原子力显微镜研究了纯铜晶粒及腐蚀界面的形貌特征,在实验室条件下模拟了纯铜晶粒在青铜文物表面的析出过程,通过延长还原时间CuCl可全部被还原成纯铜,其生成条件在土壤中也具备,这为除去青铜文物上的有害锈提供了理论和实验依据。

Hontonpur ECO is a new craft acid reduction-cleaning agent with excellent reduction property in acid bath which can get rid of the unfixed dyes on fabric to obtain high fastnesses.

Hontonpur ECO 是新工艺的酸性还原清洗剂,在酸性浴中具有出色的还原作用,彻底去除织物上未固着的染料,获得高牢度。

Longquan celadon use of local high-quality porcelain clay, soil Zijin, quartz chinaware and other raw materials, forming the pile after the traditional, carved, front, engrave, engraved, sticky, zoned skills such as hand-made of semi-finished products, and then glazing, at about 1300 ℃ high temperature to restore the atmosphere of heavy firing, glaze the high iron was reduced to low iron, so a dark green enamel.

龙泉青瓷采用当地优质瓷土、紫金土、石英等陶瓷器原料,成型后以传统的堆、雕、贴、镂、刻、粘、划等手工技艺制成半成品,然后施釉,在1300℃左右的高温下用重还原气氛烧制,釉中的高价铁被还原为低价铁,使瓷釉呈现青绿色。

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