查询词典 oxidation

Instantaneous current efficiency of the electrochemical oxidation process of Cr~(3+) in the absence and presence of ultrasound was studied in a divided electrochemical cell.

研究结果表明：在有超声作用和机械搅拌条件下，蒽的转化率和反应速率均比无超声作用时高，且超声作用下的转化率和反应速率又高于机械搅拌。

However, heavy interdiffusion occurr at the interfaces of coatings/TiAlNb after oxidation.

研究了带NiCrAlY，TiAlCr及搪瓷涂层的TiAlNb合金分别在800℃和900℃时的氧化行为。

However, the interdiffusion of Nb and Cr at the interface might be detrimental to the long-term oxidation resistance and mechanical performance of the substrate.

在与TiAl合金接触时，搪瓷变得不稳定，氧化过程中，涂层与合金界面形成一定厚度的反应层，致使涂层与合金间结合力下降。

Use of Sulfuric Acid may cause initial discoloration of interior tank wall surface due to oxidation.

盛装此浓度的硫酸时，刚开始时会使桶内壁氧化变色。

The intermedium products in liquid could demonstrate the completeness of the oxidation.

对苯酚氧化中间产物的研究证明了该技术的氧化彻底性。

Objective To investigate the effect of hypoxia on cerebral intracellular biological oxidation and to find out the effective ways of drug intervention.

目的 了解缺氧对新生鼠脑细胞生物氧化的影响，寻找有效的干预治疗方法。

So it is key of controlling the intramuscular lipid oxidation to ensure the chilled pig quality all right.

因此，控制肌间脂肪氧化是保证冷却肉良好品质的关键。

A selective and mild PS-DIB/ionic-liquid immobilized 2, 2, 6, 6-tetramethyl-piperidin-4-ol-N-oxyl catalytic oxidation procedure of alcohols to the corresponding aldehydes and ketones in ionic liquid BF4 at room temperature was developed. The oxidant PS-DIB was prepared via the iodation and acetylation of polystyrene resin. For the preparation of the ionic-liquid immobilized TeMPO catalyst, 4-(2, 2, 6, 6-Tetramethyl-1-oxyl-4-piperidoxyl)butyl bromide was first synthesized from TeMPO and 1, 4-dibromobutane.

将聚苯乙烯树脂先碘化再乙酰基化，制得了负载型二乙酰氧碘苯作为氧化剂。2， 2， 6， 6-四甲基－N-氧自由基哌啶醇与1， 4-二溴丁烷反应生成4-溴丁氧基－2， 2， 6， 6-四甲基－哌啶－1-氧化物，再与N-甲基咪唑发生季铵化反应，生成的溴化季铵盐与四氟硼酸钠进行离子交换制得氟硼酸型2， 2， 6， 6-四甲基－N-氧自由基哌啶负载离子液体。

A selective and mild PS-DIB/ionic-liquid immobilized TEMPO catalytic oxidation procedure of alcohols to the corresponding aldehydes and ketones in ionic liquid BF4 at room temperature was developed. The oxidant PS-DIB was prepared via Iodation and acetylation of polystyrene resin. For the preparation of the ionic-liquid immobilized TEMPO catalyst, 4-(2,2,6,6-Tetramethyl-1-oxyl-4-piperidoxyl)butyl bromide was first synthesized from 2,2,6,6-tetramethyl-piperidin-4-ol-N-oxyl and 1,4-dibromobutane.

将聚苯乙烯树脂先碘化再乙酰基化，制得了负载型二乙酰氧碘苯(diacetoxyiodo polystyrene，PS-DIB)作为氧化剂。2，2，6，6-四甲基-N-氧自由基哌啶醇(2，2，6，6-tetramethyl-piperidin-4-ol-N-oxyl，TEMPO)与1，4-二溴丁烷反应生成4-溴丁氧基-2，2，6，6-四甲基-哌啶-1-氧化物，再与N-甲基咪唑发生季铵化反应，生成的溴化季铵盐与四氟硼酸钠进行离子交换制得氟硼酸型2，2，6，6-四甲基-N-氧自由基哌啶负载离子液体TEMPO-IL。

Using Agilent 8453 ultraviolet-visible spectrophotometer, the affecting factors were studied on the kinetic processes in iodometry involved in the volatilization of iodine and the oxidation of iodide ion by dissolved oxygen, in particular such as the shape of the vessel, the volume of the solution tested, the concentration of KI and the temperature and the acidity of tested solution.

利用紫外－可见分光光度仪测量了I2挥发、I在酸性介质中被溶解氧氧化的动力学过程，着重研究了容器形状、溶液体积、KI浓度、温度等因素对I2挥发速率的影响以及溶液酸度与I氧化反应速率的关系。

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。