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The results of the ability of anti-oxidation scavenging DPPH free radical shows that polyhydroxy substituted N-benzoylserotonin derivatives (compound 1-10) have the generally better ability of anti-oxidation than control group, in which the IC50 of compound 1-10 ranges 8.75 to 18.02 μg/ml and the IC50 of trolox is 13.04 μg/ml. The abilities of anti-oxidation of compound 1, 4, 5, 7, and 10 are all better than the control group, trolox. Among all, compound 10 has the best ability of anti-oxidation (IC50 is 8.75 μg/ml). This study also discovers that the ability of scavenging DPPH free radical is strongly related to the number and the position of hydroxyl.

在清除DPPH自由基的抗氧化能力结果显示，相较於对照组水溶性维生素E之IC50值13.04 μg/ml，多羟基取代之N-色洛冬宁苯甲醯胺衍生物（化合物 1 ~ 10），皆具有相当不错的抗氧化能力，十种醯胺化合物的 IC50值介於8.75 ~ 18.02 μg/ml之间，化合物1、4、5、7、10的抗氧化能力效果皆优於对照组水溶性维生素E的IC50值，其中又以化合物10的效果最佳(IC50值8.75 μg/ml)，而清除DPPH自由基的能力发现与羟基的数量及其位置有关。

Amoung 10 compounds (polyhydroxy substituted N-benzoylserotonin derivatives), compound 4 shows the highest number of ε. The ε of compound 4 is high up to 11.43 × 103㎝-1M-1, which is the 2.84 times of the ε of control group, octyl salicylate. Moreover, compound 4 can absorb all the wavelength if UVB (280 nm - 320 nm), so compound 4 can provide the best protection from UVB. Additionally, this study also discovers that the compound 5 not only can absorb UVB, but also can absorb UVA.

而本研究所合成之多羟基取代N-色洛冬宁苯甲醯胺衍生物（化合物1 ~ 10）莫耳吸收系数最高者为化合物4，其在波长306 nm的莫耳吸收系数达11.43 × 103㎝-1M-1，为对照组水杨酸辛酯的莫耳吸收系数的2.84倍，且化合物4的吸收波长涵遝蒤紖VB波长(280 ~ 320 nm)的范围，故化合物4能提供UVB波长的最佳防护；另外化合物5除了具有UVB波长的吸收外，还具有UVA波长的吸收作用。

In the study of testing the overall ability of anti-oxidation, polyhydroxy substituted N-benzoylserotonin derivatives (compound 1-10) still have the better overall ability of anti-oxidation than control group, trolox. The IC50 values of compound 1-10 range 2.49 to 3.92, while the IC50 value of trolox is 5.23 μg/ml. Compound 10 is still the best derivative which has the best overall ability of anti-oxidation; IC50 value is 2.49 μg/ml.

而在总抗氧化能力结果显示，相较於对照组水溶性维生素E之IC50值5.23 μg/ml，多羟基取代之N-色洛冬宁苯甲醯胺衍生物（化合物1 ~ 10）之总抗氧化能力效果IC50值介於2.49 ~ 3.92 μg/ml之间，十种醯胺化合物的总抗氧化效果皆比对照组水溶性维生素E的抗氧化效果还要来得优越，其中效果最强的仍为化合物10，其 IC50值为 2.49 μg/ml。

The interfacial bonding between a series of bonding agents including polyhydroxy alcohols bonding agents (LBA-22,LBA-201,hyantoin/triazines composite bonding agents,neutral polymeric bonding agents and substituted amides and RDX were studied. Meanwhile,all of the bonding agents were used to prepare RDX-CMDB propellants.

研究了多羟基醇类(LBA-22、LBA-201)、海因/三嗪类、中性聚合物类和取代酰胺类键合剂与RDX的表界面作用，并在RDX-CMDB推进剂中考察了这些键合剂的作用效果。

A series of 2-substituted benzimidazoles were synthesized by the reaction of o-phenylenediamine with corresponding acid in polyphosphoric acid under microwave. 11 Compounds were synthesized in this way first time.

以邻苯二胺及相应的羧酸为原料，微波辐射下，合成了18种2-取代苯并咪唑衍生物，其中11种化合物的微波合成未见文献报道，研究并优化了反应条件。

In this paper, twenty novel meso-substituted porphyrins of four series were designed and synthesized by increasing the conjugation of porphyrins or introducing substituents with high fluorescence quantum yield into the meso-position of porphine, and then red OLEDs were fabricated by doping porphyrins into a suitable host using ten porphyrins compounds and their electrolumin -escence properties were tested. The main contents and results were generalized as follows:Three meso-tetrakisporphyrins 4a-c and three conjugations of porphine-triarylamine linked by styrene 10a-c were synthesized and characterized by 1H NMR, MS, UV-vis spectra and fluorescence emission spectra.

本文通过增大卟啉分子的共轭结构或将具有高荧光量子产率的基团连接到卟吩环的中位得到了四类共20个新型的卟啉化合物，并选取其中10个化合物制备有机发光器件来考察材料的电致发光性能，具体内容包括以下几个部分：设计合成了3个中位直接被三芳胺取代的卟啉化合物4a-c和3个通过苯乙烯连接的卟吩-三芳胺共轭体10a-c，通过核磁氢谱、质谱、紫外吸收光谱和荧光发射光谱表征了新化合物的结构。

The treatments of rice straw-based blocks were as follow: Rice straw block Ⅰ was composed of 74.2% rice straw treated with chemicals, 20.4% concentrate mixture and 3.3% minerals premixture; Ten percent rice straw from rice straw block Ⅰ was equally substituted by corn silage or concentrate for rice straw block Ⅱ or Ⅲ; Additional 10% water was supplemented to rice straw block Ⅳ, based on the straw block Ⅰ, in order to decrease the rigidity of the straw block.

复合稻草块的调制：①稻草块Ⅰ由74.2%的稻草、20.4%混合精料等压块调制而成；②稻草块Ⅱ、Ⅲ是将稻草块Ⅰ中10%的稻草分别用青贮玉米、混合精料等量替代调制而成；③稻草块Ⅳ的组成与稻草块Ⅰ相同，仅在压块时额外添加10%的水分，以降低其硬度。

In trial 2, according to the similarity of calving date and milk yields, 25 primiparous Holstein cows were divided into five equal groups in a randomized block design with 49 days period. The general diet of dairy farm was fed to cows of control. The alfalfa block 2.7kgd^(-1 was substituted respectively by rice straw block Ⅰ,Ⅱ,Ⅲ or Ⅳ as treatments.

试验2，选取25头初产荷斯坦泌乳母牛采用随机区组设计按产犊日期、产奶量一致原则等分为5组，对照组用奶牛场常规日粮饲喂，试验Ⅰ、Ⅱ、Ⅲ、Ⅳ组分别用稻草块Ⅰ、Ⅱ、Ⅲ、Ⅳ等量替代苜蓿草块，每头替代量为2.7kgd^(-1)，试验期49d。

The new olefination methods of alkyl substituted propargylic dithioacetals are described in this thesis.

中文摘要本篇论文围绕在烷基取代炔丙基硫缩醛的新型态烯化反应，可分为两部分进行探讨。

The last part is concerning the new application of dialkyl-substituted propargylic dithioacetals.

第三部分则是双烷基取代炔丙基硫缩酮的新型态反应。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！