还原的

The testing results showed that the optimal reduction conditions are 1320℃ for 120 min and the proportional mass fractions of activated carbon powder and the additive A are 3% and 5%, respectively. The additive A accelerates the aggregation of metallic grains so as to make the enriched metallic grains easier for magnetic separation. The mass fraction of maximum nickel in ferronickel alloy and nickel recovery in the laterite-nickel ore are 8.31% and 95.44%, respectively. Metallic nickel is thus enriched.

研究结果表明，最佳反应条件：还原温度为1320℃，还原时间为120min，还原剂与添加剂的质量分数分别为3%及5%；添加剂可促进金属晶粒的聚集，富集的金属晶粒更易于磁选分离；还原产品镍铁合金中镍的质量分数可达8.31%，矿石中镍的回收率可达95.44%，金属镍得到了富集。

The study has shown that MgO has different rules on sinter reducibility at 850℃ and 1220℃, i.e.,it promotes reducibility of sinter at 850℃ and restrains sinter reduction at 1220℃.

研究表明，MgO对烧结产物还原性的影响，在850℃和1220℃显示出不同的规律，低温下抑制铁氧化物的还原，高温下有利于还原性能的改善。

There is still no consensus on the expression of the two isoforms in the human prostate and their cellular locations are also controversial. It is not known to which extent each of these isozymes contributes to overall enzyme activity in different prostatic tissues. In an attempt to elucidate which isoform of the 5α-reductases is responsible for the metabolism of T in normal and diseased human prostate, we performed qualitative and semi-quantitative studies of both enzymes in normal, benign hyperplastic and adenocarcinomatous human prostate tissues by RT-PCR and Immunohistochemistry methods.

现已成功地克隆出编码Ⅰ型及Ⅱ型5α-还原酶的基因，关于这两型5α-还原酶在前列腺组织及不同类型细胞中的存在、分布情况及其对组织中睾酮代谢各自所起的作用仍存在许多争议，为此我们应用RT-PCR及免疫组化方法对国人正常、良性增生以及前列腺癌组织中两型5α-还原酶的表达进行了定性和半定量研究。

In this chapter, the MPV reactions catalyzed by alkoxy dysprosium is used to the reduction of prochiral ketones. The chiral alkoxy catalyst was prepared by chiral binaphthol and Dy 〓.

最后还将烷氧基镝催化下的MPV还原反应应用于潜手性酮的不对称还原，利用光学活性的联萘酚制备了手性烷氧基催化剂，结果表明该催化剂可有效地催化潜手性酮的不对称MPV还原。

Under certain experimental conditions,the Terbiumbasic Calbonate can be dissolved in aqueous solution of nicotinic acid to yield an Orange Tb Complex, which has a broad characteristic absorption band between, 370—410 nm The autoreduction of the Tb—Complex was studied by means of spectrophotometric method, It was determined by experiments that the reaction order is equal to two and the apparent activation energy of the auto—reduction is equal to 68.4±0,8KJ/mol.

在一定条件下，Tb的碱式碳酸盐可以溶解在烟酸的水溶液中形成橙黄色的络合物，该络合物在390nm波长附近有一宽带特征吸收峰。消光值在0。～1.0范围內与Tb的浓度具有直线关系。分光光度法对Tb自还原反应研究确定：于15℃及烟酸浓度为0.35M时，当pH值小于6.0条件下，随pH值的增加，其自还原速度常数减小，该自还原反应级数为二，反应活化能为68.4±0.8KJ/mo1。

Essence of oxido-reduction reaction is studied by the theory of Yuanji Diagram , the law of oxidability or reductibility of a matter is analysised, and the standard of deciding the weakness and strong-ness of oxidability or reductibility is given

用元极图理论研究氧化还原反应的实质，分析了物质的氧化性或还原性规律，提出了判断物质的氧化性或还原性强弱的标准。

The physicochemistry properties of the raw ore and its meaning on geochemistry The earthy black weathered mineral has strong oxide-reducing and acid-base activites. When it reacts with hydroxylammine hydrochloride and inorganic acid, the large number of RE and pb in it can be dissolved in aqueous solution.

原矿的物理化学性质及地球化学意义黑色土状风化物具有较强的可还原性和酸碱活性，它对稀土和Pb等的吸持作用受环境pH值和氧化还原电势影响很大，其中的稀土和Pb可在原矿与还原性物质和酸性物质反应时被溶解出来。

Keeping balncc of oxidation-reduction equation is a difficult problem in the chemical teaching, especially in high school. The author induced from a great wany materials a new mcthod, namely,"grasp one molecule", which is readily accepted by strdents.

氧化——还原方程式的配平是化学教学中的难题，特别在高中化学中，学生尤感困难，本文是作者从自身氧化还原反应，有单质参加和有单质生成的氧化还原反应诸方面归纳出一种学生易于接受的方法即&抓1分子法&。

Based on the results of thermodynamic analysis,iron ore was deoxidized by converter gas in different conditions with the temperature from 550℃to 700℃.

根据热力学分析结果，在550-700℃范围内选择相应条件进行转妒煤气还原铁矿石的实验，研究温度及时间对碳化铁生成率的影响，并论述二者对于还原、析碳的影响，探索利用转炉煤气还原铁矿石生产碳化铁的可行性。

The result shows: in 0~360 kg/hm^2 fertilizer can improve the plant height, dry matter accumulation of maize, nitrogen accumulation, root vigor, leaf nitrate reeducates activity, chlorophyll content and yield, meanwhile the leaves' nitrate reeducates activity, dry matter accumulation and the final output of wheat, root activity and other indicators were significantly correlated; Cultivating under the same conditions and dropping the fertilizer amount from 360 kg/hm^2 to 315 kg/hm^2, the dry matter accumulation will be increased, the roots vigor and leaf nitrate reeducates activity will be strengthened, but the yield are not obviously different in the same treatment.

结果表明：在0~360kg/hm^2的施肥范围内，肥料能显著增加玉米植株的株高、干物质积累盆、叶绿素含量和籽粒产量，提高根系活力、叶片硝酸还原酶活性；同时硝酸还原酶活性、干物质积累量、根系活力和叶绿素含量等指标与玉米最终产量呈显著正相关；在相同的栽培条件下，将施肥量从360kg/hm^2降至315kg/hm^2，植株的于物质积累量增加、根系活力、叶片硝酸还原酶活性增强，但处理间籽粒产量无显著差异。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。