试析英语复合词的语义构成

本文在考察英语复合词的构型、句法和语义关系的基础上，试图以Fauconnier（1997）Fauconnier ＆ Turner（2002）提出的概念合成理论为指导从语义学的角度来探究其认知构建过程。     

过渡元素的有机桥配体桥联化合物

过渡元素的有机桥配体桥联化合物可分为三种类型．即。桥配体、“桥配体及“酸桥配体桥联化合物．桥联的出现使化合物表现出花样繁多的价键本性及空间结构．既促进了化学键理论的发展．也促进了配位催化及生物模拟的发展．因此．本文对有机桥配体桥联化合物的结构、性能及合成进行了讨论．     

有机锡化合物的合成及应用研究进展

本文系统地论述了有机锡化合物的合成进展，介绍了有机锡化合物在工农业、医药等方面的应用。     

RFe7Mn4Ti化合物的结构和磁性(R=Y,Tb,Dy,Ho,Er)

研究了Mn部分替代RFe11Ti中的Fe对化合物结构和磁性的影响 .利用真空电弧熔炼和真空热处理制备RFe7Mn4 Ti(R =Y ,Tb ,Dy ,Ho和Er)化合物样品 .室温粉末样品的X射线衍射和热磁曲线测量表明 :所有这些化合物都具有单ThMn12 型结构 ,且具有良好的单相性 ,其晶格常数和单胞体积随着稀土元素的不同而变化 .在DyFe7Mn4 Ti和HoFe7Mn4 Ti化合物的热磁曲线上出现了明显的补偿特征 ,补偿温度分别约为 12 3K和 90K .同时给出了这些化合物的居里温度、饱和磁化强度及每单位分子式的饱和磁矩 .     

若干类有机物的CA命名原则与系统命名法的差异

CA(Chemical Abstracts)在每次累积索引中,都要更改某些化合物的检索名称。更改的特点是趋向于系统命名法。系统命名法也采用CA的某些命名原则,如“接合命名法”。但两者在很多化合物命名上仍存在差异,如CA对许多化合物的命名采用“对应结构命名法”。本文讨论了这些差异。     

Comparison of volatile and semivolatile compounds from commercial cigarette by supercritical fluid extraction and simultaneous distillation extraction

Supercritical carbon dioxide fluid extraction (SFE) was studied as a rapid method for extraction of volatile and semivolatile compounds of Chinese commercial cigarettes. The method was compared with simultaneous distillation and extraction (SDE). Temperature and pressure for the SFE were optimized. The extracts obtained by the two methods showed different characters in composition and represented differently the flavor characteristics of tobacco; compared to SDE, SFE can extract compounds within a shorter time and avoid the thermal degradation and solvent contamination of samples. The extracts by the two extraction methods are complementary for investigating the flavor characteristic of tobacco products.     

Synthesis of thiadiazole-based Schiff base metal complexes and their inhibition rate to superoxide anion free radical

A new series of Schiff base ligands were synthesized by the condensation of 2-amino-5-mercaptan-l,3,4-thiadiazole and salicylaldehyde or 2,4-dihydroxybenzaldehyde and their derivatives with choroacetic acid, and further reaction with corresponding metal acetate to form metal complexes. The compositions and structures of the ligands and their complexes were characterized by elemental analysis, molar conductivities, electronic absorption spectra and infra-red spectra. Their inhibition rates to free radical, such as O2, were also tested. The results show that all of the obtained complexes display significant activities, among which the copper（Ⅱ） complexes have the best inhibitive effects.     

聚乙二醇支载下液相组合合成小分子化合物

综述了近几年聚乙二醇（PEG）作为可溶性聚合物支载体合成小分子化合物,以及其支载的试剂在液相有机合成中的应用.     

福州市闽江饮用水源中几种含氮化合物含量的分析

对福州市四个自来水水源中含氮化合物含量的分析,发现总氮、氨氮在一年中变化规律有二个峰值:分别与丰水期农田水土流失引起面源氮的补给和与枯水期水流量小,生活污水、畜禽养殖污水的排入得不到稀释有关;测得四水源中水中溶解氧含量均较高,故可不考虑水中亚硝酸盐氮对身体健康的危害;不同水源地总氮、氨氮含量悬殊较大,说明水厂水质受城市生活污水无处理排放的影响较大。此外还与闽江水源受潮汐影响有关。     

不同烤烟品种(系)主要香味物质含量对比研究

对中国云南大理主栽品种红大和K326以及自选品种（系）DL01和DL02烤后烟叶的香味物质进行了分析比较，结果表明：香味物质品种差异性较大，其中总香味物质、类胡萝卜素及其降解物、有机酸、潜香物质的含量DL02居首位，当地栽培具有丰富的香气物质，优于亲本红大及其它品种；DL01在美拉德反应物、西柏烷类降解物及含量高的重要香味物质等方面优于其它品种，具有一定的推广价值．