氧

This article reports a new kind of copolymer, non polar polar terpolymer : poly(styrene-butadiene-methyl methacrylate ) P(S-b-B-b-MMA prepared by anionic polymerization with n BuLi as initiator, 1,1 diphenylethylene as capping agent and lithium 2-(-methoxyethoxy) ethoxide as complex agent.

以正丁基锂为引发剂， 1 ，1-二苯基乙烯为戴帽剂， 2-(2-甲氧基乙氧基)乙氧基锂为络合剂，在环己烷、四氢呋喃混合溶剂中，采用阴离子聚合法，于－70℃～－40℃合成了非极性-极性的三嵌段共聚物聚苯乙烯-聚丁二烯-聚甲基丙烯酸甲酯，并借用GPC、1H-NMR、DSC、TEM、IR等仪器对共聚物进行了表征。

It was indicated by SEM spectra of ZnO thin films that the surface of the sample was leveled off, and the crystals were felsitic. It was found from the experiment that, with the increasing of substrate temperature, there were more oxygen vacancies in the films, which lead the conductance of the sample become larger , and the absorb edge of ZnO thin films shifted toward higher wavelength; with increasing of Ar:O2 ratio, there were lesser oxygen vacancies in the films, which lead the absorb edge of ZnO thin films shifted toward lower wavelength.

实验还发现，随着衬底温度的升高，薄膜中产生的氧空位将会增多，使得ZnO薄膜的电导逐渐增大，而且其紫外透射吸收截止边带向高波长方向漂移；随着氩氧比例的增加，薄膜中的氧缺陷相对减少，薄膜的透射吸收截止边向低波长方向漂移。

Before fed with antibiotics, the predominant intestinal aerobic and facultative anaerobic bacteria were Enterobacteriaceae, Flavobacterium, Acinetobacter and Vibrio.

投喂药饵前，鲤肠道好氧及兼性厌氧菌优势菌群为肠杆菌科、黄杆菌属、不动杆菌属和弧菌属；厌氧菌群中双歧杆菌属最多，乳杆菌属次之，拟杆菌属最少。

Novel phosphazene cyclomatrix network polymers were synthesized via nucleophilic displacement of activated nitro groups of tri (4-nitrophenoxy)tri cyclotriphosphazene and hexa cyclotriphosphazene with the hydroxyls of bisphenol A.

以三对硝基苯氧基三苯氧基环三膦腈和六对硝基苯氧基环三膦腈为主要单体，采用活性硝基亲核取代的方法，合成了一类新的环簇膦腈聚合物。

Novel phosphazene cyclomatrix network polymers were synthesized via nucleophilic displacement of activated nitro groups of tri (4-nitrophenoxy) tri cyclotriphosphazene and hexa (p-nitrophenoxy) cyclotriphosphazene with the hydroxyls of bisphenol A.

以三对硝基苯氧基三苯氧基环三膦腈和六对硝基苯氧基环三膦腈为主要单体，采用活性硝基亲核取代的方法，合成了一类新的环簇膦腈聚合物。

People always thought oxygen is beneficial hurtless to human body in the past, but from discovery SOD is had cleared exceed oxide after the action of freedom radical, the certain metabolization product that discovers oxygen (O2 ˙ or HO2 ˙, H2O2 and ˙ OH) and the active material of its ramification if fat kind cross oxidation child and single-track condition oxygen (˙ O2) can injure airframe.

过去人们总认为氧对人体是有益无害的，但自发现SOD具有清除超氧化物自由基的作用以后，发现氧的某些代谢产物（O2˙或HO2˙、H2O2与˙OH）以及其衍生物的活性物质如脂类过氧化产物与单线态氧（˙O2）可损伤机体。

Hydroxamic acid β-glucoside is confirmed as a major natural substrate of maize β-glucosidase.β-glucosidase plays a significant role in defensing some pathogens and pests of maize seedling by releasing hydroximic acids .

并确认了氧肟酸葡萄糖苷即是玉米葡萄糖苷酶的主要底物，以及氧肟酸在玉米葡萄糖苷酶的催化下释放氧肟酸是玉米幼苗时期抵御病虫害的一种重要方式。

The novel title compound was synthesized with benzaldehyde, isobutyraldehyde, phosphorus trichloride as raw materials. The total yield was 40.8%. The structure was confirmed by 1H NMR, 31P NMR and elemental analysis.

摘要以苯甲醛、异丁醛、三氯化磷为原料合成了新型的1，3，2-氧磷杂环类化合物2-苯羟甲基－5，5-二甲基－4-苯基－2-氧代－1，3，2-二氧磷杂环己烷，总收率为40.8%，并对其进行了NMR研究和结构表征。

The best corrosion resistance of the coatings after salt - fog test is micaceous iron oxide epoxy coatings followed by iron red epoxy coatings, and zinc - rich epoxy coatings.

盐雾实验后各涂层的耐腐蚀性能由强到弱依次是环氧云铁、环氧铁红、环氧富锌。

In this paper, a controlled-atmosphere cone calorimeter was used to investigate the smoking property of wood treated with fire-retardant monoammonium phosphate and the untreated for comparison.

在相同的氧浓度下，当氧浓度在16％以上时，MAP阻燃木材燃烧过程中的浓烟释放（RSR、TSR和SEA）小于素材；而当氧浓度在16％以下时，MAP阻燃木材燃烧过程中的浓烟释放（RSR、TSR和SEA）反而高于素材。

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。