还原的

The influences of different metallization ,different oxidation and different gas temperatures on coal and oxygen consumption were studied.

研究了金属化率、氧化度、荒煤气温度对煤耗、氧耗和煤气量的影响；通过对熔化气化炉热平衡分析，了解热量的收入与支出项；通过对还原煤气气体成分的分析图，判断该气体成分能否满足竖炉的需求，通过调整操作参数更新还原煤气的煤气成分。

Whenpyridine was used as reductive decomposing agent, the expecting cholest-4-en-3,6-dione-22-al was obtained. However, when Zn/HOAc was used to decomposethe ozonide, C-4,5 double bond was further reduced to give cholest-3,6-dione-22-al as main product. 2 For the side-chain construction of compound (1), the solid-liquid phase-transfer Wittig reaction was used. When (3-methyl-2-oxobutyl)-triphenylarsonium bromide was used as reagent, the reaction can be carried out inmild reaction condition and the yield is higher than that when phosphorane wasused.

但使用Zn／HOAc作为分解剂时，却得到其氢化产物胆甾-3， 6-二酮-22-醛；2在甾体支链引入过程中，采用固-液相转移Wittig反应的方法，用(3-甲基)-2-氧丁基三苯基溴化胂作为试剂，反应在非常温和的条件下便可完成，而且产率比传统采用膦烷的方法更高；3在对某些甾酮化合物的选择性还原反应研究时，发现在〓还原体系中，当加入某些金属离子后，反应有更好的区域选择性和立体选择性。

It is suggested that quite a lot of the Be, Co, Cu and Pb could be originated from the syngenetic stage during which the coal-forming plants grew. The strongly seawater-effected peat bog with the reductive and alkaline water could be in favor of the relative enrichment of the Be, Co and Cu, and the faintly seawater-effected bog with the slightly reductive and alkaline water could be in much favor of the enrichment of the Mn, Mo, Ni, P, Pb, Th, Tl and U.

认为凯里煤中相当一部分Be、Co、Cu和Pb起源于成煤植物生长期间的同生阶段；受海水影响强烈的还原偏碱性沼泽环境有利于Be、Co和Cu的相对富集，受海水影响微弱的弱还原性和弱碱性环境条件更有利于Mn、Mo、Ni、P、Pb、Th、Tl和U的富集。

Through investigation on the Eh values of cinnamon soil,sierozem,brown desert soil in situ with new electrochemical methods and summarization of the same results of laterite,red soil and yellow brown soil,a horizontal zonal variation of oxidation-reduction characteristics in semi-humid,semiarid and arid areas from south China to north China is revealed.

用新的电化学方法原位考察了褐土、灰钙土、棕漠土、黑土、风沙土、灌淤土、盐土、碱土、亚高山草甸土、灰褐土、水稻土和旱地土壤的氧化还原状况。综合已有原位测定结果，地带性土壤的电位由南向北的空间分异与其水平地带谱相应；亚高山草甸土和灰褐土的氧化还原状况随山体高度和植物群落而呈垂直分异趋势。

Reinders' redox buffers were used to study the redox properties of sensitivity centers and latent image centers on microcrystals of cubic silver bromide emulsion in this paper.

本文采用Reinders的氧化还原缓冲液的方法研究硫敏化的立方体卤化银微晶的敏化中心和潜影中心的氧化还原性能。

Oxidative bleaching by oxidation of its own to make a strong oxidation of colored substances were destroyed, so as to achieve the purpose of bleaching; food mainly used to restore the bleaching agent, mostly belonging to sulfurous acid and its salts, they are generated through the reduction of the role of sulfur dioxide can fruits and vegetables fade, it is widely used in food products such as bleaching and preservation.

氧化漂白是通过其本身强烈的氧化作用使着色物质被氧化破坏，从而达到漂白的目的；食品中主要使用还原漂白剂，大都属于亚硫酸及其盐类，它们通过产生的二氧化硫的还原作用可使果蔬褪色，因此广泛应用于食品的漂白与保藏等。

Four different catechin content cultivars were selected from our tea germplasm appraisal database to assay the gene expression level of the seven genes, flavonol synthase, dihydroflavonol-4-reductase, leucoanthocyanidin reductase, anthocyanidin synthase, etc, which were involved in the flavonoids biosynthesis. The result showed that, the DFR and LAR transcripts were expressed increased with the increasing of tea catechin contents. Nevertheless, the others did not show this tendency clearly.

利用半定量PCR技术检测总儿茶素含量不同的4个茶树品种中与类黄酮合成相关的黄酮醇合成酶、二氢黄酮醇－4-还原酶、无色花色素还原酶、花色素合成酶等7个基因的表达情况，结果表明DFR和LAR基因的表达量与茶树中总儿茶素含量呈一定的相关性，而其他基因则与其相关性不大。

UV-Vis spectrum showed that some monomer or oligomer were existed in this film. The results demonstrated that the PPy chains were served as both the reductant of chloroauric acid and the ligands to stabilize gold-NPs.

接着利用吡咯单体及寡聚体具有的还原性，将新合成的聚吡咯膜浸泡在氯金酸水溶液中搅拌反应，通过扫描电镜观察发现，在膜中还原生成了大量的金纳米粒子，同时在膜的表面也观察到了金纳米粒子的存在。

Experimental results showed that the relative average error of the proposed method, the hydrazine hydrate gravimetry and the ammonium chloroplatinate gravimetry is -0.14%~+0.13%,-0.21%~+0.21% and -0.13%~+0.14%, respectively, and the relative standard deviation of three methods is 0.05%~0.08%, 0.11%~0.14% and 0.08%~0.09%, respectively, for Pt content from 37% to 65%. Therefore, the accuracy and precision of the proposed method are almost the same with hydrazine hydrate gravimetry, and are a little better than ammonium chloroplatinate gravimetry. But it is rapid, economic, secure, easy to operate and environmental friendly.

结果表明：测定37%~65%的Pt含量，本法、氯铂酸氨重量法、水合肼还原重量法的相对平均误差分别为-0.14%~+0.13%、-0.21%~+0.21%、-0.13%~+0.14%，相对标准偏差分别为0.05%~0.08%、0.11%~0.14%、0.08%~0.09%，故本法的准确度和精密度与水合肼还原重量法的基本一致，较氯铂酸氨重量法的略好；但本法消解快速、节能、安全，操作简便，对环境污染程度小，适宜推广运用。

Theenvironmental risk of leachate from landfill with different operation modes depend ontheir accumulation amount rather than their sudden concentrations and fraction.(7)The high SRB metabolism activity and the accumulation of metabolitewere the main reasons of in-situ precipitation phenomenon of Cu~(2+) and Zn~(2+) inlandfill refuse in bioreactor landfill. Heavy metals in bioreactor landfill havemechanism of in-situ immobilization controlling by SRB metabolism. Thepredominant SRB in landfill refuse belongs to Desulfovibrio vulgaris sp.

7生物反应器填埋场中较高的SRB代谢活性及其逐步累积的代谢产物硫化物是填埋垃圾中的Cu~(2+)和Zn~(2+)形成硫化物沉淀而发生重金属原位固定现象主要原因，生物反应器填埋场中重金属存在原位固定的硫酸盐还原菌调控机理，初步从形态判断填埋垃圾中的优势硫酸盐还原菌属普通脱硫弧菌属Desulfovibriovulgaris sp。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐