查询词典 oxidative

The oxidative degradation of sesbania gum by Fenton reagent was studied in the article.

本文考察了芬顿试剂对田菁胶的氧化降解行为。

In addition, the decreasing ratio of viscosity reached 90% with low temperature and short reaction time, which showed the high oxidative degradability of Fenton reagent for sesbania gum.

另外，只需较低的温度(25 ℃)和较短的时间(20 min)，芬顿试剂就能使田菁胶粘度下降90%以上，显示了较好的降解效果。

There were no changes in the hydroperoxides level or the ferric-reducingability for the laparoscopic sigmoidectomy with sevofluraneanesthesia, indicating that this procedure does not increasesurgical oxidative stress.

七氟醚麻醉腹腔镜下乙结肠切除术中过氧化氢水平和铁还原能力没有改变，这表明腹腔镜手术不会增加手术的氧化应激反应。

RESULTS: Ferric-reducing ability decreased significantly duringsurgery for the open sigmoidectomy with sevoflurane anesthesia,by 387 ± 153 mmol/L, though the hydroperoxides leveldid not change, showing that oxidative stress increases in surgicalpatients.

结果：七氟醚麻醉开腹乙结肠切除手术中铁还原能力显著减弱，减幅387 ± 153 mmol/L ，尽管过氧化氢水平没有改变，这表明手术增加了氧化应激。

METHODS: We measured levels of blood hydroperoxides as an indexof oxidative injury of cellular components, as well as plasmaferric-reducing ability as an index of total antioxidant potential,during sigmoidectomy under four conditions: open sigmoidectomywith sevoflurane anesthesia, laparoscopic sigmoidectomy withsevoflurane anesthesia, open sigmoidectomy with propofol anesthesia,and laparoscopic sigmoidectomy with propofol anesthesia.

在四种不同麻醉方法下乙状结肠切除术中，测定血液中的过氧化氢水平作为细胞氧化损伤的指标，以及血浆铁还原能力作为总抗氧化潜力的指标：七氟醚麻醉开腹乙状结肠切除术，七氟醚麻醉腹腔镜下乙状结肠切除术，异丙酚麻醉开腹乙状结肠切除术，异丙酚麻醉腹腔镜下乙状结肠切除术。

The Addition of Pentopan and oxidative enzymes were more effective in preventing bread staling.

面包贮存试验结果表明：戊聚糖酶与氧化酶的协同作用对延缓面包老化的效果最好；添加Pentopan组的面包失水较快；添加GOX组的失水较慢。

Described in chapter 3 is the immediate application of the Clemmensen reductive rearrangement reaction to the polycyclic system as illustrated in a elaboration of the 5-6-7 tricyclie core skeleton of Stemona alkaloids in 5 steps: N-alkylation, [3, 2] -sigmatropic rearrangement, Dieckmann condensation, oxidative cyclization, reductive rearrangement, starting from ethyl pipecolinate hydrochloride.

我们以哌啶酸乙酯为起始原料，经氮烷基化，[3，2]-σ重排，Dieckmann缩合，自由基环化，6-6-6元环系到5-6-7元环系的还原重排五步反应，高收率地构筑了百部生物碱的5-6-7氮杂三环骨架，并用X射线晶体衍射法确定了其结构。

A high molecular weight polyisobutenyl succinimide dispersant with high nitrogen content and good thermal and oxidative stabilities was developed.

采用氯化烃化工艺和后偶联反应技术开发了一种氮含量高、热稳定性和氧化稳定性好的高相对分子质量的聚异丁烯基丁二酰亚胺分散剂。

The type and concentration of thiophenic sulfur in gasoline and diesel fuel were determined separately by gas chromatography with a sulfur chemiluminescence detector.With activated carbon and 30％aqueous solution of H2O2 as catalyst and oxidant respectively, the experimental studies of oxidative desulfurization of gasoline and diesel were carried out.

采用气相色谱-硫化学发光检测器分析了汽油和柴油中噻吩类硫化物的分布及浓度；以活性炭作为催化剂，以30％过氧化氢溶液为氧化剂，在甲酸存在条件下考察了汽油和柴油中噻吩类硫化物催化氧化脱除的选择性，讨论了硫化物中硫原子电子密度对硫化物氧化选择性的影响。

Therefore, with integrated consideration of the situations mentioned above, if the cathode reaction could be sufficiently utilized, preparation of benzaldehyde and tolualdehyde from toluene and xylene by electrooxidation with Ce /Ce as oxidative media would be more advantageous.

因此，综合考虑上述情况，若能充分利用阴极反应，选择Ce／Ce为氧化媒质，间接电氧化甲苯或二甲苯制备苯甲醛和甲基苯甲醛将更加有利。

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。