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The rate constants and yields of aromatic halides containing substitute s with different electrophilicities were investigated.

三氟乙酸钠在以CuI为催化剂的条件下与卤代芳烃进行取代反应，生成相应的三氟甲基化合物。

Its purpose is threefold: the use of high-temperature rapid passivation of the active enzyme to stop the fermentation; evaporation of water, reduce the volume, fixed shape, to keep dry to prevent mildew degrees; distributed most of the low boiling point of the smell of grass, and intensify and retain high-boiling point aromatic substances, was unique sweet tea.

其目的有三：利用高温迅速钝化酶的活性，停止发酵；蒸发水分，缩小体积，固定外形，保持干度以防霉变；散发大部分低沸点青草气味，激化并保留高沸点芳香物质，获得红茶特有的甜香。

The present invention discloses the structure and application of one new kind of sulphurous heterocyclic naphthyl imides. The said compounds feature that the naphthyl imide has conjugated plane enlarged via the added five- or six-element aromatic heterocycle and introdued sulphurous heterocyclic atom.

本发明公开一类新的含硫杂环并萘酰亚胺化合物的结构及其用途，本发明所说的化合物的特征是萘酰亚胺的共轭平面通过并入的五元芳杂环得以扩大，并引入含硫杂原子。

Part II: The structural modification of norcantharidin and the discovery and applications of NCS-DMSO combinatorial system: A series of derivatives of 5,6-dehydronorcantharidin was transferred into their corresponding 5,6-epoxynorcantharidin derivatives with Oxone, and finally 14 new compounds have been synthesized; and we also discover the novel combinatorial system NCS-DMSO to make N-aromatic substituted norcantharidin amic acids to their corresponding imides in high yields.

利用十分廉价的Oxone为氧化剂，成功的得到了14个5，6-环氧去甲斑蝥素系列衍生物；同时我们意外地发现了NCS-DMSO组合体系可以使去氢去甲斑蝥素酰胺类化合物实现分子内脱水而生成亚胺类化合物，首次发现和运用该全新的组合体系实现了该类反应。

Butyric acid,phenol,indol and polycyclic aromatic hydrocarbons are inferredin the solution phase of leachate by GC,and 53% of organic acids,18% of alcohol andphenols,and 7% of alkanes are detected in leachate by GC-MS.The colloidal structure oflandfill leachate is analyzed by determination ofξ-potential and the interfacial tension,whichprovide the basis to pretreatment by the coagulation and treatment by advanced oxidation.

首先测定了垃圾渗滤液的常规水质因子及污染物含量，并采用GC及GC-MS技术对垃圾渗滤液有机相的微观结构进行了分析，由GC谱图解析推断渗滤液的溶液相中含有丁酸或辛酸、苯酚、吲哚及多环芳烃等有机物；由GC-MS解析可知其有机物主要为有机酸，约占53％，其次醇及酚类约占18％，烷烃约占7％。

The asymmetric reduction of prochiral P-oxo ester, aromatic ketone and aliphatic ketone to its corresponding chiral alcohol by yeast cells were studied respectively in this work when ethyl 4-chloro-3-oxobutyrate, acetophenone and 2-octanone were as the model substrates.

本文以4-氯乙酰乙酸乙酯、苯乙酮和2-辛酮分别为β-羰基酯、芳香酮和脂肪酮的模型底物，研究了利用活性酵母细胞催化这三类前手性酮不对称还原合成相应手性醇的反应特性。

Alkylbenzene, normal alkanes and alkylcyclohexane on the pyrolysates of P. Boryanum at 300℃ had uniform distribution and the relative content of them was similar, indicating that they originated from same precursors. Fatty acids, alcohol and ketone in algal cell are the possible precursors. For example, the precursor of relatively abundant C〓 alkylbenzene and alkylbenzene with C〓 side chain perhaps related with palmitic acid. N-alkylnaphthalene in pyrolysates at 300℃ probably derived from alkylation of cleavage products of aromatic steranes and terpanes.

在盘星藻300℃热解产物中，烷基苯、正烷烃和烷基环己烷碳数分布一致、各化合物的相对含量接近，表明它们有相同的来源，藻类体内的脂肪酸、醇和酮及细胞壁等物质可能是其母质，相对含量较高的碳数为16及侧链碳数为16的烷基苯类化合物，其前身物可能与软脂酸有关。300℃热解产物中的正烷基萘类化合物，可能由芳香甾、萜类的降解产物与直链烃类加成烷基化而形成。

Adopting 30-second nitrocellulose as the main sticky material, using ethyl acetate, ketone, alcohol and aromatic hydrocarbon as a mixture solvent and modifying nitrocellulose with dimethyl phthalate plasticizer,the prescription of staple adhesive was designed with orthogonal experimental methodology.

选用30s 硝酸纤维素作为主要成膜物质，醋酸酯、酮、醇和芳烃作为组合溶剂，邻苯二甲酸酯类复合增塑剂对硝化棉进行改性，采用正交试验方法确定胶黏剂的配方。

Lavender Essential Oil Is An Important Tool In Aromatherapy - Soothe your nerves and your skin with this aromatic oil.

薰衣草精油芳香疗法是一项重要工具--安抚你神经和皮肤这芳香油贵。

Licorice root acid in licorice root with other constitutive chemical combination after burning, may come into being many ring aromatic hydrocarbons having carcinogenesis.

甘草中的甘草酸在燃烧后，与其他成分化合，可生成有致癌作用的多环芳烃。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。