氧氢基

Experiments on purification technologies for the conversion of cornstalk biomass into the industrial product were made to produce cornstalk gas in the down-flow fixed by the gasifier. The experiment focused on the technical procedures for deoxygenation. catalytic cracking of tar, hydrogenation, etc. Quality straw syngas was produced for methanol synthesis. The catalysis of methanol synthesis for the production of cornstalk syngas was earned out in a tubular-flow integral and isothermal reactor under the pressure of 5MPa over Cu-based catalyst C301 (particle size: 0.833mm×0.351mm), a catalyst made in China. Thirty-three sets of test data were obtained.

为了实现秸秆类生物质合成燃料甲醇的工业转化，有效利用生物质能，对下吸式固定床气化炉产生的低热值玉米秸秆燃气进行除氧、分解焦油和配氢等纯化试验，制备出合成甲醇的优质秸秆合成气，在直流流动等温积分反应器中，使用国产C301铜基催化剂，催化剂粒度为20~40目(0.833mm×0.351mm)，在5MPa反应压力下，对玉米秸秆合成气进行催化合成甲醇试验研究，获得33套试验数据。

The transition metal catalysis reduction, hydride reagents reduction, sodium dithionite reduction and bioreduction ware discussed.

综述了近年来α，β-不饱和羰基化合物α，β-碳碳双键和碳氧双键的选择还原研究进展，讨论了过渡金属催化还原、氢化试剂还原、连三亚硫酸钠还原以及生物还原。

The efficient first asymmetric syntheses of-6β-hydroxy-7αH-eudesm-4-en-3-one, and its C-6 epimer were achieved starting from-dihydrocarvone, whichprovide a novel and efficient synthetic method to 6-oxgenated eudesmanes.

以-二氢香芹酮为原料，经五步反应，首次完成了6β-羟基-4(5)-烯-3-羰基桉烷及其6位差向异构体的立体选择合成，并为C-6位含氧官能团取代桉烷类化合物的合成提供了一种简便有效的方法。

Wesynthesized (2E, 6E)-farnesol 12 starting from compound 24 by three steps.The optical sesquiterpenoid 14 was synthesized starting from--citronellol with a 28% overall yield, and the absolute configuration of 14 wasinfered (3R, 7S)-3, 7, 11-trimethyl-10-oxododecanoic acid on the basis of thechirality of starting material and biogenic relation.

以手性--香茅醇为原料，经七步反应也合成了旋光活性的目标分子14，结合生源关系，推测天然产物14的立体结构为(3R，7S)-3，7，11-三甲基-10 氧代-十二碳酸；对手性中间体34经脱除羰基得到手性天然产物(3R.7RS)-六氢法呢醇13。

SCE for dihydroartemisininoxy benzoic acid hydrazide at Ag electrode BR buffer solution containing 20% ethanol(V/V, pH 7.2) using electroanalytical chemistry method.

在含20%乙醇的BR缓冲溶液（V/V， pH＝7.2）中，利用电分析化学方法测得双氢青蒿素氧基苯甲酰肼(dihydroartemisininoxy benzoic acid hydrazide， DBAH)在银电极上于－0.66 V

This thesis deals with the investigation on the chemical constituents of Dioscorea Opposite Thunb and studys the interactions between 5,7-dihydroxy-4′-methoxy flavanone,-epicatechin and bovine serum albumin using fluorescence, electrochemical method ,UV absorption and NMR spectroscopy. The main contents are as follows: Chapter 1: Study of the chemical constituents in Dioscorea opposita Thunb 1. Two methods were used to methylate the fatty acid in Dioscorea opposita Thunb.

本文在前人的工作基础上对我省道地药材-怀山药饮片中的化学成分进行了系统的研究；同时利用核磁共振方法、电化学分析法、荧光光谱法、紫外光谱法分别研究了两种天然酚性化合物5，7-二羟基-4′-甲氧基二氢黄酮，(--表儿茶素与牛血清白蛋白之间的相互作用，主要内容如下：一。

Hydroquinone could be oxidized into quinone under alkaline condition, and simiquinone free radical was formed as a intermediate of this process.

氢醌在碱性条件下容易被氧化为醌，半醌自由基是这一过程的中间产物。

CELL AID TM provides both singlet hydrogen and singlet oxygen which seek out and fight free radicals.

细胞援助商标的主要原因同时提供单氢和单线态氧的寻找和对抗自由基。

IR spectrum analysis shows that there are contain-oxygen functions and substitutive groups in coal macromolecular.

煤的红外光谱分析表明，煤中仍然存在含氧基团和一定数量的取代基，可得到芳氢率参数。

The substrate containing glucose was treated with natural anaerobic microorganism bacterium from sullage. The biohydrogen was produced through anaerobic hydrogen fermentation.

文中以河底污泥为混合厌氧微生物的主要来源，以葡萄糖为基质对生物产氢进行了研究。

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。