还原

The optimal derivatization condition is reducting reaction 2.5h at 50℃followed by acetylating 2.5h at 90℃.

总结出了单糖衍生化最佳的反应条件为还原温度50℃、还原时间2.5h；乙酰化温度90℃、乙酰化时间2.5h。

Thederivatives of 5 kinds of monosaccharides Xyl, Ara, Man, Glc, Gal were detected anddetermined respectively by GC-MS. The influences of several factors, such asreductive time, reductive temperature, acetylating temperature and acetylating time,on recovery of monosaccharides were studied by orthogonal experiments. The resultsshowed that the reductive temp.

利用气相色谱—质谱联用技术检测五种常见单糖(木糖、阿拉伯糖、甘露糖、葡萄糖、半乳糖)的乙酰化产物含量，采用正交试验综合考察了还原时间、还原温度、乙酰化温度、乙酰化时间等因素对单糖回收率的影响及规律。

The results showed that:(1) low N stress significantly decreased the leaf SPAD value, leaf nitrogen content, nitrate reductase activity and reduced distance between leaf-umbrella, leaf area. And these impact aggrandized as the stress intensity increased.(2) Responses to low-N stress were in different degrees between different varieties of rubber tree seedlings. On the whole, GT1 was most sensitive to stress, PR107 next, and RRIM600 was the least sensitive.(3) The SPAD value, DBL, LA were significantly positive correlated with LNC, NRA in the seedling leaves.

结果表明：（1）缺N胁迫明显降低了叶片SPAD值、叶片N含量和硝酸还原酶活性，缩小了叶蓬距、叶面积，且影响幅度随胁迫强度的加大而增大；（2）不同品种橡胶树实生苗对缺N胁迫的响应程度不同，总体上GT1较为敏感，PR107次之，RRIM600较不敏感；（3）橡胶树实生苗叶片SPAD值、叶蓬距、叶面积与叶片N含量、硝酸还原酶活性之间均呈显著或极显著正相关。

A fully automated simultaneous determination of nitrate and nitrite in water samples by sequential injection analysis based on the Griess diazo-coupling reaction and the formed azo dye for nitrite at 540nm and reduction to nitrite using coppered cadmium column.

用顺序注射分光光度法，通过一次进样。同时测定硝酸根和亚硝酸根。亚硝酸根是根据格里斯重氮－偶联反应，形成偶氮染料后在波长540nm下进行检测。而硝酸根则通过镀铜镉粒还原柱还原为亚硝酸根后进行测定。

In this paper the calculating formula of sea water oxi dazing reduction potential is derived and the transformation of oxidation reduction of heavy metal in sea water is analyzed .

本文导出海水氧化还原电位计算公式，定性分析了重金属在海水中氧化还原转化。

In deaerated buffer solutions, the cyclic voltammetry of the composite films of GOx-Au NP-CHIT showed a pair of well-behaved redox peaks that were assigned to the redox reaction of GOx, confirming the effective immobilization of GOx on the composite film.

研究表明：在除氧缓冲溶液中，葡萄糖氧化酶-壳聚糖-纳米金复合膜修饰电极表现出一对良好的氧化还原峰，这对峰归因于葡萄糖氧化酶的氧化还原，证明葡萄糖氧化酶被成功固载于复合膜内。

MgO-C brick has a good erosion resistance but Al〓O〓-C brick is better. Corrosion mechanism for refractory without carbon is that FeO and oxides of molten slag take place chemical reaction with constituents of refractory and forming low fusing point compounds to be dissolved in molten slag. For those refractory containing graphite carbon is to be decarburized in advance and to form decarburizing layer and metamorphosis layer. The subsequent corrosion is decarburizing and taking chemical reaction to form low fusing point compounds and dissolved in molten slag at the same time.

铁浴中硅和钛的扩散是影响铁浴及熔渣与耐火材料作用的重要因素，耐火材料中添加的TiO〓和SiC受熔渣氧化和侵蚀，将被部分还原形成Si，Ti向铁浴中扩散，Si、Ti在铁浴中的扩散研究结果是： D〓=1.84×10〓exp（－5988.7/T） cm〓/S E〓=49766 J/mol D〓=7.76×10〓exp（－53225.5/T） cm〓/S E〓=442304 J/mol 铁浴式熔融还原熔体对粘土砖，高铝砖，镁砖的侵蚀速度很高，镁碳砖抗侵蚀能力比前几种耐火材料强，但不如铝碳砖；对不含碳耐火材料在熔体中的侵蚀是熔渣中FeO及其它氧化物与耐火材料组分的化学反应形成低熔点物熔蚀进入渣相，产生损毁。

NO3(superscript -) is deoxidized into NO2(superscript -) by nitrate reductase.

在硝酸还原酶的作用下，硝酸盐被还原为亚硝酸盐。

The tantalum powder s by sodium reduction was heat-treated at 1350 ℃,1400 ℃ and 1450 ℃ respectively,then the three kinds of powders were deoxidized by Mg reduction at the same condition.

用钠还原氟钽酸钾得到的原粉分别在1350，1400，1450℃温度下进行热处理，得到的3种钽粉按照相同的条件进行镁还原脱氧处理，测试钽粉的化学成分、物理性能和电性能。

NO3- is deoxidized into NO2- by nitrate reductase.

在硝酸还原酶的作用下，硝酸盐被还原为亚硝酸盐。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。