查询词典 oxidation-reduction

Photocatalytic oxidation technique is a very active field in the catalysis discipline in recent years.

光催化氧化技术是近年来催化学科中一个十分活跃的研究领域。

In recent years, many metalloporphyrins were synthesized to catalyze the oxidation reaction.

对P-450活性中心的结构和功能模拟引起了人们的极大兴趣。

Both and can catalyze effectively the CO oxidation at room temperature.

和 都能在常温下有效催化CO氧化反应。

Both Au 2 and Au 4 can catalyze effectively the CO oxidation at room temperature.

Au 4和Au 2都能在常温下有效催化CO氧化反应。

As for photocatalytic oxidation, the dispersion , recycling and loading technology of catalyzer has not been mature so far

光催化氧化法的催化剂分散、回收及负载技术还不很成熟。

Oxidation rate of catalyzer for H 2 and HT is near 100% at 400 ℃ and more that 99% at 500 ℃, respeclively.

在400℃，氧化床穿透之前，Hopcalite氧化剂对H2的氧化效率接近100%；在500℃，Hopcalite氧化床对HT的氧化效率大于99%。

It possesses the obviously catalytic activity for the oxidation of catechol.

经实验证明该修饰电极对邻苯二酚在电极上的氧化表现出催化的特征，测定灵敏度有所提高。

Experiment showed that poly modified glassy carbon electrode could catalyze the oxidation of ascorbic acid and catechol.

该电极对抗坏血酸、邻苯二酚的电化学氧化有催化作用，增大了氧化峰电流。

The article in recent years the research progress of disease of oral cavity of TP prevention and cure makes one overview. The compositive TP of the basic research 1.1 TP of 1 TP is the floorboard that phenolic apperception of a kind of many hydroxyl closes matter, 25% what hold tea dry weight about, its are main component includes to express gallnut of gallnut catechu element gallnut of element of catechu of gallnut of acerbity ester, watch, watch catechu element is acerbity element of catechu of ester, watch, express gallnut of gallnut catechu element among them acerbity ester content is highest, occupy the 80%[1] of catechu element about, fighting oxidation with its unique element structure, fight the position with fight the respect such as tumor to have choppy, significant. The 1.2 TP absorption in oral cavity and metabolization Lee [2] is measured normally inside a hour after healthy person is chewing green tea Xie Huo contains juice of gargle green tea, content of the TP in saliva is very high, after observing green tea passes salivary enzymatic hydrolyze, TP is slow release and in oral cavity;Yang of local play action [the salivary level after 3] checked 6 volunteers to drink tea, chroma of the TP in making clear the saliva after drinking tea as a result is serous TP pH indicator 2 times, and the salivary TP concentration that contains gargle tea solution a few minutes to be able to produce higher level, and TP can be absorbed through oral cavity mucous membrane.

本文就近年来TP防治口腔疾病的探究进展作一综述。1 TP的基础探究1.1 TP的组成TP是一类多羟基酚类化合物的总称，约占茶叶干重的25%，其主要成份包括表没食子儿茶素没食子酸酯、表没食子儿茶素、表儿茶素没食子酸酯、表儿茶素等，其中表没食子儿茶素没食子酸酯含量最高，约占儿茶素的80%[1]，并以其独特的分子结构在抗氧化、抗突变、抗肿瘤等方面占有重要的地位。1.2 TP在口腔中的吸收和代谢Lee等[2]测得正常健康人在咀嚼绿茶叶或含漱绿茶液后的一个小时内，唾液中TP含量很高，并观察到绿茶通过唾液酶水解后，TP缓慢释放并在口腔局部发挥功能；Yang等[3]检查了6位志愿者饮茶后的唾液水平，结果表明饮茶后唾液中TP浓度是血浆TP浓度的2倍，而含漱茶溶液几分钟即可产生更高水平的唾液TP浓度，且TP可通过口腔黏膜吸收。

This kind of product has good characters of causticity resistance, wear resistance and oxidation resistance under high temperature, good air sealing and long using life.

可用于冶金、化工、医药、食品、耐蚀、汽车、机械等行业的密封装置和滑动装置，该产品具有耐蚀、耐磨、抗高温氧化等性能特点，气密性好、寿命长。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。