化合物

The proper in-situ polymerization systems of acidic and basic compounds using amino acid derivatives and cinchona alkaloids as template molecules respectively were adopted for preparation of molecularly imprinted monolithic columns by systematically investigating the effect of polymerization conditions on pore structure and selectivity of resulting polymers. The enantiomers of amino acid derivatives and the diastereomers of cinchona alkaloids were successfully resolved on these columns.

本文分别以氨基酸衍生物和辛可纳生物碱为模板分子，系统研究了制备条件对聚合物孔结构和选择性的影响，建立了合适的酸性化合物和碱性化合物的原位印迹体系。

Compounds 25, 26, 27, 28, 30, 33, 34, 35 were first isolated from Citrus grandis Osbeck.

化合物25，26，27，28，30，33，34，35为首次从柚中分离得到的化合物。

In view of their theoretical and practical significant importance in the investigation of sophisticated biological topics, and in the development of novel drugs and new biochemical tools, DNA intercalators and cleavers have received much current interest This dissertation focuses on synthesis of hetrocycles containing naphthalene moiety and on the mechanism of their interactions with DNA.

DNA嵌入、切断剂的研究，对探索生命科学中的复杂问题，发展新药、新型生化工具具有非常重要的理论和实际意义，成为当前多学科的研究热点。本文从我国国情出发，以国内资源丰富的萘类化合物为基点，设计、合成了一系列多杂环平面刚性分子，并对某些化合物与DNA相互作用的分子机理进行了研究。

A new compound has been isolated from the Laurencia majuscule Lucas, it"s structure was determined by IR, MS,"HNMR, 13CNMR, clemently analysis.The compound is P -d-Arabinoside, 1-O-hexadecyl.

从采自西沙群岛的略大凹顶藻乙醇提取液的乙酸乙酯部分分离出了一个化合物，经IR、MS、~1HNMR、~(13)CNMR、元素分析等方法鉴定为一个新化合物：β-十六烷基-D-阿拉伯糖甙。

In this study, crystal structure and its defects in the compounds of TiMnSi〓type and 〓-type were studied, and difference in structure between such two phases and the topologically close-packed phases was analysed.

本文首次利用HREM系统研究了TiMnSi〓型化合物与〓型化合物的晶体结构及缺陷，并分析了。。。

Compounds 1 and 2 were isolated from the genus Coleus for the first time.Compounds 3 and 4 were isolated from C.forskohlii for the first time.

化合物1和2为首次从鞘蕊花属植物中分离得到，并首次运用2D-NMR技术对其碳氢信号进行准确归属，化合物3和4为首次从毛喉鞘蕊花中分离得到。

A method for determinating the activities of pectinase was proposed in this paper. It can produce the red-brown amino compounds when 3,5-dinitrosalicylic acid and aldehyde were heated together. The amino compounds had maximum absorbency at 540nm. In certain range, there was a good linear relationship between the amount of reducing sugar and the color of the reaction mixture.

针对QB1502-92标准测定方法测定高活力果胶酶、固定化果胶酶活力存在的实验误差大，重现性及灵敏度差的缺陷，提出了利用3，5-二硝基水杨酸与醛糖共热产生棕红色的氨基化合物，在一定范围内还原糖的量和含有呈色氨基化合物的反应液颜色深浅成正比的原理，在540nm下测其吸光度，从而计算出果胶酶活力的测定方法，并对测定步骤、影响因素及测定中可能出现的问题进行了试验研究。

By the characteristic coloration reactions of the flavaonoids in comparison to UV and visible spectrum shown between the exWacted substance and turin.

采用不同的提取剂处理春花胡枝子叶，所得提取物与芦丁在紫外、可见光区的光谱对照及黄酮类化合物的特征显色反应，证明了春花胡枝子含有黄酮类化合物。

In this paper,the analysis of and comparison between the conventional asphalt test and evaluation method and U.S.

沥青是由一些极其复杂的高分子的碳氢化合物和碳氢化合物的非金属衍生物所组成的混合物。

The amount of compound, super lattice and nitrogen in tantalum increases with temperature rising. And the account of compound phase has a maximum with the increasing of hydrogen mole fraction,and this maximum decreases with the increasing of temperature.

氮在钽中的固溶度随气压、温度和氢摩尔分数的增加而增加，化合物和超晶格相含量随温度增加而增加，同时化合物相随氢摩尔分数增加有一个极大值，该极大值随温度增加而下降。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。