氧化还原

The approach of preparation method is that, first, blend yttria into hot aquafortis, add silicone grease chemical compound after reaction, cool it to form gel. Second, heat the gel for 1-48 hours to acquire solid fruitage. Third, igloss the fruitage in reducing gas for 1-48 hours. Forth, add anorg and then igloss it in reducing gas for 1-48 hours in the temperature between 800-1600 degree.

它的制备方法，包括以下步骤：1将氧化钇溶入热浓硝酸中，反应后加入硅酯类化合物，恒温形成凝胶；2凝胶加热1-48小时，得到固相产物；3在还原气氛中灼烧1-48小时；4加入无机盐，在800-1600℃范围内，还原气氛中灼烧1-48小时；5稀酸洗涤，干燥后得到稀土激活Y2SiO5荧光粉。

In the presence of the combination of sulphuric and phosphoric acid, with sodium diphenylamine sulfonate as the indicator, standard solution of potassium dichromate was used to titrate total iron value.

试样以盐酸溶解后，在酸性介质中，先以氯化亚锡将三价铁大部分还原为二价，然后在钨酸钠指示下，再以三氯化钛将剩余的三价铁还原为二价，过量的三氯化钛以重铬酸钾氧化消除干扰，在硫磷混合酸存在下，以二苯胺磺酸钠为指示剂，用重铬酸钾标准溶液滴定全铁量。

The changes of total reducing substances, oxalate extractable Fe, dithionite citrate bicarbonate extractable Fe and phosphorus adsorption in oxic and anoxic layers of two paddy soils during 6 week flooding were examined under laboratory conditions.

在实验室条件下对两种水稻土在为期 6周的淹水过程中，其氧化层和还原层土壤中还原物质总量、草酸盐可提取铁、连二亚硫酸钠-柠檬酸-碳酸氢钠可提取铁和磷吸附的变化进行了研究。

According to the electrochemistry mixed potential theory, the linear sweep voltammagram method is used to study the cathod and anode processes of the stabilizers. The results show that α-α' dipyridyl can decrease the deposition velocity by inhibit the anodic oxidation of formaldehyde, and potassium ferrocyanide can stabilizing the bath by inhibit the deoxidation of Cu~(2+).

根据电化学混合电位理论，用线性伏安法研究表明，α-αˊ联吡啶通过有效地抑制甲醛的阳极氧化来抑制沉铜速率；而亚铁氰化钾主要通过抑制Cu~(2+)的还原峰电流来阻碍Cu~(2+)的还原析出，但宏观的对化学镀铜镀速的影响不大。

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。

The results showed that the heavy metals in various mediums were mainly Cu and Ni, and those concentrations were, in the descending order, in ditch, tailings, slagheap and cultivated soil. In the tailings and the sludge of the ditch, the concentrations of Ni were obviously higher than those of Cu. Whereas, in the soil and the weathering and atmospheric deposition of the waste slagheap surface, the concentrations of Cu were higher than those of Ni. This means that in the first two mediums, Cu and Ni mainly originated from the tailings, while in the latter two mediums, Cu and Ni mainly came from the atmospheric deposition of airborne particles of the smelting. Cr and Zn were mainly in residual fraction, Cu was mainly in oxidizable and residual fraction.

结果表明：不同区域环境中重金属呈现不同程度累积，其中以Cu、Ni最为显著，含量由高到低依次为尾矿坝排污沟＞尾矿坝＞废渣堆＞农田土壤；尾矿砂和沉积物中重金属分布以Ni含量显著高于Cu含量为特征；而农田土壤和风化物及降尘中重金属分布以Cu含量高于Ni含量为特征，前者Cu、Ni主要来源于尾矿，后者与冶炼烟尘排放有很大关系；样品中除Cr、Zn以残渣态为主外，Cu、Ni、Pb化学形态分布有较大差异，Cu以可氧化态和残渣态为主，Ni以可还原态为主，其次为弱酸提取态，Pb以可还原态为主，其次为残渣态。

Molybdates were reduced to adsorbed hydrogen molybdenum bronzes on platinum electrode in H 2SO 4 solution during potential sweep cathodically.

钼酸盐在铂电极上硫酸溶液中还原形成钼青铜，吸附在电极表面，铂电极因钼酸盐的还原和钼青铜的氧化而得到修饰。

Mehods Commercially available glycine ethyl ester hydrochloride was used as starting material to give the target compound via addition, protection with BOC, Dieckmann cyclation, reduction with NaBH4 and LiAlH4, protection, oxidation, oximation and deprotection.

以甘氨酸乙酯盐酸盐为原料，依次经加成、BOC保护氨基、Dieckmann环化、NaBH4还原羰基、LiAlH4还原氰基、BOC保护氨甲基、氧化、肟化、脱BOC保护等9步反应制得目标化合物。

Thirdly, selective catalytic reduction of NO with propene over Cu ion-exchanged Al-MCM-41 has been studied.

在氮氧化物催化还原的活性评价实验中，考察了铜离子交换的Al-MCM-41对丙烯选择还原一氧化氮的催化活性。

Tache of kinetics for the procedure of reduction reaction of samarium oxide with metallic lanthanum has been discussed in this paper.

讨论了镧热还原氧化钐过程的动力学环节，分析了还原过程镧—钐合金存在的可能性，采用反证法确定了制备金属钐温度下的动力学控速环节。

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.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。