Oligo glucosamine was prepared by oxidative degradation of chitosan with hydroperoxide in the neutral condition.
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。
Light stabilizers are one of accessory ingredients which restrain photo-oxidative degradation of polymer materials.
光稳定剂是抑制或减缓由于光氧化作用而使高分子材料发生降解的助剂。
The main degradation methods of chitosan and the preparation of oligochitosan by oxidative degradation were discussed.
讨论了壳聚糖的主要降解方法及使用氧化降解法制备低聚壳聚糖的情况。
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。
The present invention relates to oxidative degradation products of atorvastatin calcium and the process of the preparation thereof.
本发明涉及阿托伐他汀钙的氧化降解产物及其制备方法。
Thermal and thermo-oxidative degradation of chitin with ammonium nitrate, ammonium sulfate and concentrated sulfuric acid were studied.
讨论了硝酸铵、硫酸铵和浓硫酸对自制甲壳素热降解和热氧化降解过程的影响。
The mechanism of oxidative degradation, hydrolysis, photodegradation and microbial degradation of polyurethane elastomers are reviewed.
评述了聚氨酯弹性体所经历的热氧降解、水解、光降解和微生物降解等降解过程。
It is shown that the temperature is the most important factor influencing the rate of thermo-oxidative degradation while oxygen content is of negligible importance.
研究表明温度是影响热氧化降解速率最重要的因素，而氧含量的影响则相对较小。
It is highly resistant to oxidative degradation (i. e. formation of acids and sludge) and being of low viscosity circulates easily to provide efficient heat transfer.
它具有极高的抗氧化变质特性(即具有防止酸和油泥形成的特性)，其粘度低，易于循环，可进行有效的热传导。
The effect of lanthanum oxide on thermo-oxidative degradation behavior of LLDPE was studied by thermogravimetry, oxidation induction time measurements, rheological and TG-FTIR analyse.
通过热失重、氧化诱导期、流变分析和热重-红外联用分析等方法研究了氧化镧对LLDPE热氧分解行为的影响。
The present invention also relates to atorvastatin calcium substantially free of oxidative degradation products and the pharmaceutical compositions containing such atorvastatin calcium.
本发明还涉 及基本上不含氧化降解产物的阿托伐他汀钙和含有此阿伐他汀钙的药物组合物。
The results showed that synergistic combination of aromatic ketones with Co or Fe complexes has better auto-oxidative or photo-oxidative degradation than the individual use of aromatic ketones.
其研究结果表明，芳香酮类光敏剂与钴或铁络合物光敏剂协同使用，比前者单独使用，具有更好的自氧化或光氧化降解作用。
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。
Oligo glucosamine was prepared by oxidative degradation of chitosan with hydroperoxide in the neutral condition. Its moisture retention, 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。
By combining all the analysis results, the pattern of oxidative degradation of engine oil during road test was investigated, and the breakpoint of rapid increase of oxidation products was obtained.
综合上述分析结果，考察了在用油随行车里程的增加氧化衰败的规律，并得到在使用过程中含氧化合物迅速增加的拐点。
By combining all the analysis results, the pattern of oxidative degradation of engine oil during road test was investigated, and the breakpoint of rapid increase of oxidation products was obtained.
综合上述分析结果，考察了在用油随行车里程的增加氧化衰败的规律，并得到在使用过程中含氧化合物迅速增加的拐点。
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