含苄氧苯基(噁)二唑啉类衍生物的合成与结构表征

对苄氧苯甲酰肼（1）与芳香醛缩合得到酰腙（2a～2f），再与乙酸酐环合成含苄氧苯基噁二唑啉类衍生物（3a-3f），该类化合物的结构经元素分析，IR，^1HNMR和MS确证。     

盐酸催化苯并-15-冠-5酰腙衍生物的合成反应研究

以乙醇为溶剂,4’-乙酰基苯并-15-冠-5和酰肼为反应物,浓盐酸作催化剂,在回流条件下合成了7个冠醚化的酰腙,产品经元素分析、IR和1HNMR表征,确定为目标化合物.结果表明,浓盐酸催化下的反应能够在1h内完成,并且产率在90％左右,是合成该类化合物的高效催化剂.     

4’-磺酰腙苯并-15-冠-5系列化合物的合成、表征及生物活性研究

苯并-15-冠-5经磺化反应、肼解反应和缩合反应,合成了3个4'-磺酰腙苯并-15-冠-5类化合物。产品经元素分析、红外光谱分析及~1HNMR分析,确定为目标化合物,并对这3个化合物进行了植物生长调节活性实验。结果表明,该类化合物有较好的植物生长调节活性。     

双酰肼类昆虫生长调节剂研究开发进展

介绍了双酰肼类昆虫生长调节剂的开发进展以及这类化合物的作用机理和合成方法,可以看出,双酰肼结构对昆虫具有独特的蜕皮激素作用,符合害虫综合治理的要求,是一类对环境友好的、具有良好开发前景的化合物。     

席弗酰腙碱类化合物的合成及其表征

酰腙类化合物是由酰肼与醛或酮缩合而成的一类Schiff碱类化合物,具有独特的生物活性和较强的的抑菌、抗病毒和抗肿瘤的生物活性。本文以甲基丙烯酸甲酯、乙酰乙酸乙酯为反应物,分别与水合肼反应,生成了甲基丙烯酰肼与二乙酰肼,进一步缩合,得到未见报道的环戊酮甲基丙烯酰腙和丙酮二乙酰腙。     

双酰肼类昆虫生长调节剂的作用机理及对甜菜夜蛾的防治现状简述

双酰肼类昆虫生长调节剂是一类模拟蜕皮激素功能的杀虫剂。对双酰肼类昆虫生长调节剂的发展概况和作用机理进行概述,简述了甜菜夜蛾(Spodoptera exigua)对该类杀虫剂的抗性现状,并对甜菜夜蛾的抗药性机理进行探讨,以期为双酰肼类昆虫生长调节剂高效利用及甜菜夜蛾的综合防治提供理论指导。     

N-溴乙酰基水杨酰肼的合成及抗炎活性

为探讨酰肼类化合物的合成方法和抗炎活性,将水杨酰肼化合物中接入溴乙酰基,得到N-溴乙酰基水杨酰肼,使用~1HNMR,~(13)CNMR及IR对其进行结构表征,并应用爪掌肿胀法进行了生物体抗炎活性测试。结果表明:N-溴乙酰基水杨酰肼具有较好的抗炎活性,值得进一步研究探讨。     

异海松酰肼系列衍生物的合成与表征

以异海松酸(IPA)为原料,经酰氯化和肼解两步反应合成了中间体异海松酰肼,该化合物进一步衍生化合成了异海松酰胺基(2,5-二甲基)吡咯、异海松酰胺基硫脲、异海松酰胺基苯基硫脲和异海松酰胺基苯磺酰胺等4种新型异海松酰肼衍生物,收率为53.67％～76.46％.所得产物经光谱和波谱分析得到确证.     

含1,3,4-噁唑啉环的吡啶类化合物的合成

3-吡啶甲酰肼(1)与芳香醛缩合得到酰腙(2a～2e),再与丙酸酐环合成含1,3,4-噁唑啉环的吡啶类化合物(3a～3e),该类化合物的结构经元素分析,IR,1H NMR和MS确证。     

脂肪族双酰基己二酰二肼衍生物的合成及其金属减活作用

合成了 4种具有金属减活作用的化合物 :N ,N′ 二乙酰基己二酰二肼 ,N ,N′ 二丙酰基己二酰二肼 ,N ,N′ 二丁酰基己二酰二肼和N ,N′ 二己酰基己二酰二肼。合成反应的最佳条件为 :己二酰二肼与酸酐的物质的量比为 1 .0∶4.0 ,氯苯用量为 40mL ,反应时间 3h ,酰化物最高产率可达 94 2 %。老化实验结果表明 :这 4种化合物对聚丙烯的“铜害”均表现出明显的抑制作用 ,在 1 50℃条件下 ,相应试样的耐老化时间分别为 1 92、30 8、340和 51 7h ,均高于我国电缆行业标准要求的 1 68h。     

国内外染料工业发展新动向

本文阐述了国内外染料工业发展的新动向,指出了国外染料市场趋势和发展新特点:染料企业重组已趋平稳和进一步确立我国作为世界染料生产和供应中心的地位,在国际上设置"技术壁垒"和"贸易壁垒"的力度进一步加强,新染料的开发放到比较重要的地位,不断适应纺织工业新的着色要求;还指出了我国染料工业的发展新特点:市场活跃新品不断,出口增长,连创新高,新兴基地,发展壮大。注重染料质的提高,采用新技术和清洁工艺生产是我国染料工业发展的重中之重。有7篇参考文献。     

丁二烯萃取装置聚合物产生原因分析及对策

丁二烯抽提装置因其萃取溶剂二甲基甲酰胺及丁二烯本身的特性 ,在运行过程中易产生各类聚合物 ,堵塞设备、管线、阀门等 ,制约装置的运行负荷和周期。从理论上分析了装置中各类聚合物的特性及危害 ,总结聚合物产生的原因 ,结合生产实际 ,提出了相应的对策     

Heating value of biomass and biomass pyrolysis products

Studies conducted on the heating value of various types of biomass components and their pyrolysis products such as char, liquids and gases are presented. Heating values of chars are comparable with those of lignite and coke; heating values of liquids are comparable with those of oxygenated fuels such as methanol and ethanol, which are much lower than those of petroleum fuels. Heating values of gases are comparable with those of producer gas or coal gas and are much lower than that of natural gas. It is also found that the heating values of products are functions of the initial composition of biomass; correlations are developed to express these. Also, correlations are developed which explain the influence of ash elements on heating values of the pyrolysis products and on percentage distribution of energy in the products.     

Dynamics of large-scale fluctuations in native proteins. Analysis based on harmonic inter-residue potentials and random external noise

The fluctuations of residues of proteins about their equilibrium configurations are analyzed by the Langevin equation. Residue pairs that are covalently bonded and those that are within a given cutoff distance of each other are assumed to be connected by linear springs. The actions of the solvent and intramolecular interactions on each residue are treated as random noise. The correlations of fluctuations resulting from the solution of the Langevin equation are observed to be identical to those obtained by the Gaussian Network Model based on equilibrium statistical mechanics. The time-delayed correlations of fluctuations, and the response of the protein to a given frequency and to a window of frequencies are determined. The fluctuations of the residues resulting from a given fixed externally applied frequency are evaluated for different modes of the system. Synchronous and asynchronous components of correlations for different modes are formulated. The findings of the present paper are applied to the 241 residue protein S. marcescens endonuclease (1QL0).     

Beurteilung der Reinigbarkeit von Oberflächen bei partikulärer Kontamination

Hygienic impeccable surfaces are, e.g., in food technology and healthcare facilities conditionally essential. Does a presence of fine particular contamination occur, adhesion forces between particles and surfaces are relevant. In this paper the cleaning‐process of materials, which are often used in cleanrooms are focused. The surface properties, which influence the dislodgement of particles are observed. There are two groups of materials used for the experiments, which are commonly used in hygienic relevant places in healthcare facilities.     

稠油石化污水有机污染物分布特征研究

采用Gc-MS分析方法,研究了稠油石化污水中有机物分布特征,分析结果表明,稠油石化污水中有机物以烷烃、酚类和有机酸为主并含有一定量的PAHs,污水中有机物分子量140以下的以酚类为主,分子量在140以上的有机物多为烷烃和PAHs,其中烷烃类主要为分子量在200～350的饱和烷烃为主,PAHs以含不同数量甲基取代基的萘为主.     

Biosurfactants: Recent advances

Surfactants find applications in a wide variety of industrial processes. Biomolecules that are amphiphilic and partition preferentially at interfaces are classified as biosurfactants. In terms of surface activity, heat and pH stability, many biosurfactants are comparable to synthetic surfactants. Therefore, as the environmental compatibility is becoming an increasingly important factor in selecting industrial chemicals, the commercialization of biosurfactant is gaining much attention. In this paper, the general properties and functions of biosurfactants are introduced. Strategies for development of biosurfactant assay, enhanced biosurfactant production, large scale fermentation, and product recovery are discussed. Also discussed are recent advances in the genetic engineering of biosurfactant production. The potential applications of biosurfactants in industrial processes and bioremediation are presented. Finally, comments on the application of enzymes for the production of surfactants are also made.     

橡胶防护蜡生产现状和发展趋势

叙述了橡胶防护蜡的应用情况对目前橡胶防护蜡下游市场进行了分析,介绍了国内外橡胶防护蜡生产企业现状和产品标准的发展,对市场发展趋势进行研判并提出建议。     

杜邦工艺液相导生喷淋系统技改的探讨

在保证生产稳定的前提下 ,对主工艺液相导生喷淋系统进行改造 ,并逐步取消了液相导生喷淋 ,从而提高气相导生的效率 ,减轻热媒炉负荷 ,改善热媒使用状况 ,降低重油单耗     

注塑制品表面模内装饰工艺的质量分析与对策

介绍了注塑制品表面模内装饰工艺及其应用,列举了影响模内装饰注塑制品质量的主要因素和工艺要点,同时针对该项技术在生产过程中常见的质量问题做出了分析并提出了改善措施,最后阐明了注塑制品表面模内装饰工艺的发展趋势.