还原

The UV-vis and redox data indcated that the molecular plane was destroied by meso ethyl.λ〓 hypsochromic 52 nm and W〓 increase. Redox potentials increase, too.

染料的UV-vis吸收光谱和氧化还原电位结果表明中位乙基的引入破坏了染料分子的平面性，使得染料的λ〓蓝移52nm，半峰宽增大；氧化、还原电位均升高。

Racemic backbones 2-amino-2'-hydroxy-6,6'-dimethyl-l,l'-biphenyl la and 2-amino-2'-hydroxy-4,4',6,6'-tetramethyl-l,1'-biphenyl 1b were synthesized from o-methylaniline and 2,4-dimethylaniline via nitration, diazotation/iodination, Ullmann coupling, selective reduction, diazotation/hydrolysis and hydrogenation.

从邻甲苯胺及2，4-二甲基苯胺出发，经过硝化，重氮化-碘代，偶联，单还原，重氮化-水解及还原反应合成了消旋体骨架2-氨基-2'-羟基-6，6'-二甲基-1，1'-联苯1a和2-氨基-2'-羟基-4，4'，6，6'-四甲基-1，1'-联苯1b。

Methods: NO-3 was restored with cadmium column assay and NO-2 was detected with leavy nitrogen assay. The primitive NO-3 and total restored NO-2(NO-3/NO-2) in plasma of patients with chronic hepatitis and cirrhosis as well as ET-1 with radioimmunology, ALT with Lai's assay were determinated.

取慢性乙型肝炎及活动性肝硬化患者血浆，用镉柱法还原NO-3，重氮法测NO-2，计算血浆中原有及NO-3还原后NO-2总和(NO-2/NO-3)，放免法测ET-1和赖氏法测定ALT。

The effect of roasting temperature, roasting time and the reducer dosage on the leaching ratio has been studied. The best process condition is cinder/ lignite is 1/0.8, the roasting temperature is 800, the roasting time is 20min. The second is vitriol lixiviate.

本工艺分四个阶段进行：首先是硫铁矿烧渣的还原焙烧，探讨了焙烧温度、焙烧时间和还原剂用量对铁的还原浸出率的影响，得到的最佳工艺条件为烧渣：褐煤=1：0.8，焙烧温度800℃，焙烧时间20min。

After As in WO3 is dissolved with NaOH solution, WO3 is coordinated by citric acid. In HCl medium, As is reduced to lwo valency As by KI and then low valency Asis reduced to gas AsH3 by SnO2 and metal Zn. After that, DDTC-Ag solution is applled as absorbent for colorimetric determinhtion.

用氢氧化钠溶液溶出三氧化钨中的砷之后以柠檬酸配位三氧化钨，在盐酸介质中用碘化钾将砷还原成低价砷，再用二氯化锡和金属锌将低价砷还原成砷化氢气体，以DDTC-Ag溶液吸收进行比色测定。

H+2 ions were implanted into ilmenite at room temperature,and the microreaction mechanism during the reduction of ilmenite was investigated by transmission electron microscopy.

实验发现，注入H2+离子后，[1-10]方向的金属铁晶体在[1-43-1]方向的钛铁矿晶体上生成；在钛铁矿还原过程中，金属铁的(2-2-2-)或(222)晶面优先由钛铁矿的(426-4-)和(4-2-64)晶面转变而来，钛铁矿还原到铁的结构变化是一个渐变过程

After reduction, palladium existed in Pd° state on mordenite.

Pd/HM上的钯在还原过程中与丝光沸石相互作用加强，还原后以Pd形式存在，并提高了丝光沸石上的质子酸强度。

The process of selective reduction roasting-ammonia leaching-solvent extraction-electrowinning is adopted to extract nickel,cobalt and recover iron from low grade nickeliferous laterite ore.

本研究采用选择性还原焙烧-氨浸-溶剂萃取-电积工艺从低品位红土镍矿中综合提取镍、钴、铁，重点介绍了采用煤作还原剂，选择性还原焙烧的试验研究。

Both niobic acid and niobium oxide can be used as either catalyst,promoter or support in the heterogeneous catalytic reactions,such as selective oxidation,hydration,hydrolysis,alkylation,dehydrogenation and hydrogenation,because of their acidic and redox properties.

作为一种新型的催化材料，铌酸-氧化铌由于其独特的酸性和氧化还原性正受到越来越多人的关注。它可以作为催化剂的活性组分、助剂或载体使用，在烃类转化、选择性氧化、水解、水合、缩合、加氢脱氢等若干酸碱和氧化还原反应中得到广泛的应用。

The formation mechanism of titanium nitride powders by reduction of carbon and nitridation was researched by method of continuous weighing.

用连续称重法研究了钛白粉被活性碳还原氮化合成氮化钛粉末的还原氮化反应机理，并进行了反应的热力学、反应产物的显微结构以及X-ray衍射分析。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。