Composition, preparation and application of chemical oxygen source such as chlorate candles and peroxide O-generating agents are described.
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2. 评述了以分子氧和双氧水为氧源的丙烯环氧化催化剂体系的最新研究进展。
Recent research progress on the propylene epoxidation catalysts which use molecular oxygen or hydrogen peroxide as oxidants is reviewed.
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3. 由于氧本身不可燃但支持燃烧，救火行动要求尽可能切断氧源，然后按照燃烧的材料来救火。
Since oxygen is nonflammable but supports combustion, fire-fighting actions require shutting off the source of oxygen, if possible, then fighting the fire according to the material involved.
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4. 既然氧本身不可燃但支持燃烧，救火行动要求尽可能切断氧源，然后按照燃烧的材料来救火。
Since oxygen is nonflammable, but supports combustion, fire-fighting actions require shutting off the source of oxygen, if possible, then fighting the fire according to the material involved.
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5. 以反应介质和主催化元素为线索，对双氧水为氧源的烯烃环氧化反应的最新研究进展进行了综述。
Based on the reaction medium and the elements in the catalysts, the recent progresses of epoxidation of alkenes with hydrogen peroxide have been reviewed.
In this paper, the recent progress of catalytic epoxidation of styrene with molecular oxygen as oxidant is summarized, and their application is also prospected.
A method for producing a mixture of ethylene and carbon monoxide comprises contacting ethane and an oxygen source with a catalyst comprising synthetic cryptomelane or octahedral molecular sieve.
Activated carbon was used as the catalyst for catalytic oxidation of 1,1-dichloro-2,2,2-trifluoroethane(HCFC-123) to trifluoroacetyl chloride(TFAC) in fixed bed reactor.
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11. 围岩和充填物的碳氧同位素地球化学揭示盐水流体不是来自于围岩自身，极可能来自于烃源岩。
The geochemical characteristics of host rocks and filling minerals reveal that the salt fluid is not from host rocks, but most likely from source rock.
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12. 实验中采用同轴源原子氧装置，以近地轨道原子氧通量条件对涂层进行试验。
The experiment is conducted in co-axial atomic oxygen apparatus under the atomic oxygen flux of near earth orbit environment.
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13. 由于这种作用的影响，使钾质煌斑岩的源区地幔处于地温梯度高、氧逸度高的不稳定状态。
Under the influence of the subduction, the source mantle of the potassic lamprophyres has a high geothermal gradient and oxygen fugacity.
At the same time, take some measures such as adding microorganism, intermittent aeration, controlling the flow velocity, planting hydrophyte and so on to improve the effect of aeration.
The inhibitive effect of natural antioxidant on oxidation and activation of xenobiotics mediated by lipoxygenase may be one of the mechanisms of its anti-toxic and anti-tumor effect.
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16. 甲烷的主要自然源包括反刍动物和一些昆虫的肠发酵及淹水土壤的有机物的厌氧分解。
The Major natural sources of atmospheric methane include enteric fermentation in ruminants and some insects, and the anaerobic decomposition of organic matter in waterlogged soils.
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17. 由于尺度放大，氧等离子体源各组件间会出现失配现象，直接导致系统性能差、能耗高、维护任务重。
Owing to the enlarging of scale, components of plasma source no longer match with each other, resulting in performance descending, high energy cost and more frequent maintenance.
Exogenous ABA treatment promoted the increase in endogenous ABA content, quickened the degradation of endogenous IAA, increased lipoxygenase activity and accelerated fruit ripening and softening.
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19. 研究了好氧颗粒污泥利用外源碳源和胞内储存物质对同步硝化反硝化（SND）的影响。
The effects of extracellular carbon sources and intracellular storage polymer utilization on the simultaneous nitrification and denitrification (SND) in aerobic granular sludge have been researched.
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20. 在批式厌氧反应器中，以厌氧消化污泥作为天然产氢菌源，通过脱油芝麻饼的厌氧发酵生产氢气。
Biohydrogen production by anaerobic microbes enriched from digested sludge was studied by using deoiled gingeli as substrate, in batch process.
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21. 空分装置的安全运行是工业制氧安全生产的关键环节，也是最难控制的危险源。
Operation safety of the air separation unit is the key link in the production of oxygen, which is a risk source of most difficult to control.
Surface soil samples were collected in the deserts and Gobi regions of China. The carbonate content and carbon and oxygen isotopic composition were analyzed.
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23. 用正交实验方法筛选出有机相中酶促拆分环氧丙醇反应的最适酶源为猪胰脂肪酶（PPL ） 。
The optimal enzyme resource, porcine pancreatic lipase(PPL), was confirmed by proper test in the resolution of racemic glycidol via esterification with a fatty acid in organic media.
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24. 通过外源水杨酸处理，认为SA对植株的活性氧代谢、PAL活性、木质素合成等有影响。
SA is an important signal matter that can activate resistant response. SA affected on active oxygen metabolism, PAL activity and lignin synthesization.
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25. 气源层处于还原—强还原环境。 具良好的厌氧生化成气条件。
They lies from reducing environment to strong reducing ones, it has good conditions for biochemistry action in anaerobic environment.
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26. 文章涉及用袖珍永磁潘宁源产生毫安级氧负离子束的实验研究。
The present work concerns in the experimental study on producing ma order of negative oxygen ions with a pocket permanent magnet Penning source.
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27. 利用火花源发射光谱仪测定钢中的氧方法快速、准确，能够应用于生产工艺过程的在线控制。
The method to use spark emission spectrograph is fast, accurate, and can be used for on-line control of production.
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28. 目的评价超声晶氧声学造影术对输卵管源性不孕症的诊断价值。
Objective To assess the diagnostic value of SSG with PDCP in the infertility caused by tubal obstruction.
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29. 目的评价超声晶氧声学造影术对输卵管源性不孕症的诊断价值。
Objective To assess the diagnostic value of SSG with PDCP in the infertility caused by tubal obstruction.
