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In this paper,the advances in research of preparation of oligochitosan by acid degradation,oxidation degradation,enzyme degradation and composite degradation were discussed. 介绍和评述了酸降解法、氧化降解法、酶降解法以及复合降解法等各种制备方法的研究进展。
The mechanism of self-photosensitized photo-catalytic oxidation degradation of coal was firstly proposed and the dynamics model of photo-catalytic oxidation of coal was set up. 首次提出了煤自光敏化光催化氧化降解机理，建立了煤光催化氧化动力学模型。
A review is cited with 16 references.The mechanism of polyurethane degradation such as hydrolysis, thermolysis, oxidation degradation and photolysis were simply introduced. 简单介绍了聚氨酯的水解、热降解、热氧化降解和紫外线降解的反应机理。
DTA,TG,DTG techniques were used to study the thermal oxidation degradation process and kinetics of medicine (C 24H 29N 5O 8S) in air. We found that the thermal oxidation degradation process of medicine is in four steps. 用热重法 (TG)、微分热重法 (DTG)、和差热分析法 (DTA)研究药物甲磺酸多沙唑嗪 (C2 4 H2 9N5O8S)在空气流中的热氧降解过程和热氧降解动力学 ,发现该药物的热氧降解过程由四个紧连步骤组成。
photocatalytic oxidation degradation 光催化氧化降解
The thermo oxidative degradation of ENR/PVC blend was investigated by TG DTG and DTA. 采用热重差示热重分析和差热分析研究了环氧化天然橡胶(ENR)/PVC共混物的热氧降解过程。
The molecular weight and the distribution of chitosan in the oxidative degradation process with hydrogen peroxide as oxidant was tracked by GPC. 用凝胶渗透色谱法跟踪研究了过氧化氢对壳聚糖氧化降解过程中壳聚糖的分子量及其分布的影响。
Chitosan with different mol wt from oxidative degradation was dissolved in citric acid soln., and used to finish Tencel fabrics. 摘要将氧化降解制得的不同分子质量的壳聚糖溶于柠檬酸溶液，然后对天丝织物进行抗皱、抗菌整理。
The oxidative degradation of Nitrobenzene in aqueous solution with Microwave-enhanced Fenton system was studied systematically. 采用微波化学技术,对微波强化芬顿体系氧化降解水中硝基苯进行了较为系统的研究。
But the degree and the kinetic of dehydrochlorination, oxidative degradation and crosslinking during photoageing are different. 不同热稳定剂的作用，主要表现在对于微观结构变化的幅度和动力学过程的影响不同。
The surface chemical effects of epoxy during dry friction were scission of macromolecular chains and oxidative degradation, and fatigue wear was the main wear mechanism. 环氧树脂在干摩擦过程中发生的表面化学效应主要是其分子链的断裂和氧化降解，其磨损形式主要为疲劳磨损。
Oligo glucosamine was prepared by oxidative degradation of chitosan with hydroperoxide in the neutral condition.Its moisture re tention,hygroscopicity and antimicrobial activity were investigated. 采用双氧水在中性条件下对壳聚糖进行氧化降解,制备了低聚氨基葡萄糖。
The distribution and transfer character of iron in Liaohe vacuum residue were studied by absorption-separation,acidic solution extraction and mild chemical oxidative degradation of asphaltene. 考察了辽河减压渣油在吸附分离、酸性溶液萃取和沥青质轻度降解过程中金属铁的分布和转移情况。
Being sent to prison was the final degradation. 堕落到最后地步就是被关进监狱。
The studies proved that the oxidation capacity of Fenton reagent was greatly improved by irradiation of UV light and therefore the oxidative degradations of DMP, DEP, ABS, MBS and 1-naphthol were vigorously enhanced. 研究证明紫外光(UV)的参与使得Fenton试剂的氧化能力大幅度提高，因而极大地促进了DMP、DEP、ABS、MBS和1-萘酚的氧化降解，使得DMP、DEP、ABS、MBS和1-萘酚在120 min内的降解率最高分别可达81.;1%25、75
The microbial and oxidative degradations of PVA were studied using the gel permeation chro matography (GPC) and UV-spectrophotometer. 采用凝胶色谱法(GPC)和紫外分光光度法(UV)研究了聚乙烯醇(PVA)微生物降解和化学氧化降解效果。
The process conditions for the prepn. of chitosans of different mol. wt. by the acid and neutral oxidative degradations with H2O2 as the oxidant were studied. 以H2O2为氧化剂,研究了酸性、中性氧化降解法制备不同分子质量壳聚糖的工艺条件;
Oxidation involves the transfer of electrons. 氧化过程涉及电子的转移。
To transform a metal into a mineral by oxidation. 使矿化通过氧化使金属转化为一种无机物
The NO oxidation is autocatalytic. no氧化是自动催化的。