50%乙草胺微乳剂的研究

介绍了具有优良除草效果的新剂型－－50％乙草胺微乳剂，简述了该剂型的特点，乳化剂及助表面活性剂品种的筛选，并且考察了水质对微乳剂配制影响，考察了配制的微乳剂低温、热贮、乳化和对原药分解率等性能，表明该微乳剂品种分解率低，质量稳定，使用安全，社会效益显著。     

10％丙线磷微乳剂的研究

介绍了具有优良杀线虫效果的农药新剂型——— 10 %丙线磷微乳剂 ,简述了该剂型的特点 ,乳化剂及助表面活性剂品种的筛选 ,并且考察了水质对微乳剂配制的影响 ,考察了配制的微乳剂低温、热贮、乳化和对原药分解率等性能 ,表明该微乳剂品种具有分解率低 ,质量稳定 ,使用安全 ,社会效益显著等特点     

阿维菌素-哒螨灵微乳剂的研究

进行了一种新型复配微乳剂——阿维菌素—哒螨灵微乳剂的研究。通过对原药、稳定剂、乳化剂以及助溶剂等助剂的选择，确定了适宜的制备工艺，并筛选出优化的配方。检测结果表明，该复合配方乳剂具有贮藏稳定性好、高效安全等特点，具有良好的开发应用前景。     

10%残杀威微乳剂的研制

根据微乳剂形成的机理，选用了合适的表面活性剂、助溶剂等制备出了10％残杀威微乳剂，经过试验得出10％残杀威微乳剂的组成为：残杀威10％，DBS—Ca／1602（1：1）10％～15％，环己酮10％～15％。去离子水60％-70％。该微乳剂具有物理、化学稳定性好的特点，其粒径范罔在4～10nm之间。该制剂质量达到国家农药有关标准，本研究确定了10％残杀威微乳剂主要技术指标：pH=5～7，透明温度范围为-10℃～60℃。     

20％乙草胺微乳剂的研究

介绍了具有优良的除草效果的除草剂乙草胺的新剂型——— 2 0 %乙草胺微乳剂 ,简述了该剂型的特点 ,乳化剂及助表面活性剂品种的筛选 ,并且考察了水质对微乳剂配制的影响 ,考察了配制微乳剂的低温、热贮、乳化和原药分解率等性能 ,试验表明该微乳剂品种分解率低 ,质量稳定 ,使用安全 ,社会效益显著     

2.4%甲胺基阿维菌素苯甲酸盐·氯氰菊酯微乳剂的制备

介绍了甲胺基阿维菌素苯甲酸盐与氯氰菊酯混配的一种新型剂型品种－2．4％微乳剂，简述了该剂型的特点，贮藏稳定性，质量指标及药效试验结果，表明该微乳剂成本低，药效好，使用安全，具有良好开发应用前景。     

10%啶菌(噁)唑微乳剂的研制

介绍了一种以水为介质的环保型绿色农药新制剂-10％啶菌噁唑微乳剂,简述了该剂型的特点、乳化剂及溶剂品种的筛选,并且考察了水质对微乳剂配制的影响,考察了配制的微乳剂低温、热贮、乳化和对原药分解率等性能,表明该微乳剂品种分解率低,质量稳定,使用安全,社会效益显著。     

5%阿维菌素微乳剂的研究

介绍了5％阿维菌素微乳剂的制备方法和乳化剂及助表面活性剂的筛选．并且考察了水质对微乳剂配制的影响．考察了配制微乳剂的低温、热贮、乳化和原药分解率等性能．表明该微乳剂品种分解率低，质量稳定，使用安全．社会效益显著。     

3.3%吡虫啉·阿维菌素微乳剂的研制

介绍了吡虫啉与阿维菌素混配的一种新剂型--3.3%微乳剂,简述了该剂型的特点、配方选择、贮藏稳定性等实验结果,表明该微乳剂具有贮藏稳定性好、成本低、使用安全,具有良好开发前景.     

3．3％吡虫啉·阿维菌素微乳剂的研制

介绍了吡虫啉与阿维菌素混配的一种新剂型——3．3％微乳剂,简述了该剂型的特点、配方选择、贮藏稳定性等实验结果,表明该微乳剂具有贮藏稳定性存、成本低、使用安全,具有良好开发前景。     

水泥水化热测定方法综述

水泥水化热是中、低热水泥和核电工程用水泥的一项关键的技术指标。全球范围内测定水泥水化热的方法有溶解法、直接法/半绝热法、等温传导量热法三种。本文总结了中、美、欧相关方法标准,对其测试原理、仪器设备、试验过程等方面进行了比对,并对其在领域的应用做了简单的概括。     

Stability of granules of solid solutions of poly-pehnyleneterephthalamide

Conclusions Studies of starting solutions of PPTA in sulfuric acid and of granules obtained under pressrue at low temperature, and of granules stored in a hermetic package, have been carried out by the methods of differential thermal analysis, turbidity spectrum and viscometry.On granulation of a solidified PPTA solution, short-term storage of the granules in a hermetic package, or short contanct of the granulated mass with air, no appreciable change in melting point or of the intrinsic viscosity of the system takes place.Long storage of a granulated solution, even in hermetic packages, can lead to a considerable decrease in the melting point of the crystal solvates, caused by an increase in defectiveness of crystal structure under the effect of moisture.Translated from Khimicheskie Volokna, No. 3, pp. 25–26, May–June, 1986.     

气化给煤系统故障分析

气化给煤装置自投运以来,出现了气化煤仓堵煤、称重给煤机输送皮带因跑偏而损伤以及清扫装置故障频繁等问题,多次造成气化系统减负荷运行。通过对出现的各种问题进行分析,找到了产生这些问题的原因,并有针对性地采用配煤和改进清扫链等措施,使出现的问题得到了极大的改善。     

乙烯酮(双乙烯酮)下游产品废水的治理技术

乙烯酮(双乙烯酮)是十分重要的化工中间体,其下游产品较多。江苏某化工厂开发生产乙烯酮(双乙烯酮)下游产品三十多个,年生产规模三万多吨,是国内以乙烯酮(双乙烯酮)为中间体生产精细化学品的综合骨干企业。针对乙烯酮(双乙烯酮)下游产品废水特点,该厂结合企业实际,开展了产品优化,结构调整,清洁生产,资源循环利用,节水降耗等工作,从源头削减了污染物的生产。同时投资二千多万元新建预处理装置三套,6000m3/d废水生化处理装置一套,使全厂乙烯酮(双乙烯酮)下游产品的废水得到了有效的治理。     

Theory of thermohydrodynamic instability of the front of filtration combustion of gases

Based on the filtration equations with account of heat transfer in the heating region, the problem of instability of small perturbations of the wave front of filtration combustion of a gas is solved. Expressions for the growth decrement and critical transverse size of a perturbation are obtained. The problem of the wave-front stability is solved with account of the macroscopic redistribution of filtration in the system. The solution includes macroscopic characteristics such as the transverse size, the width of the high-temperature zone, etc. A method is proposed for taking into account the influence of the characteristics of the system on the evolution of perturbations. It is shown that small deformation perturbations of the front always increase to a certain amplitude; their subsequent development— continuation of their growth or stabilization—is determined by the characteristics of the system. Translated fromFizika Goreniya i Vzryva, Vol. 35, No. 5, pp. 3–5, September–October 1999.     

Coefficient of optimality of linings of heating units

The efficiency of the use of various refractories is estimated by an objective factor, namely, the coefficient of optimality of linings of heating units.Translated from Ogneupory, No. 12, pp. 26 – 27, December, 1994.     

Effect of degree of deacetylation of chitin on the properties of chitin crystallites

In the present article, chitin from crab shell was systematically deacetylated using a NaOH treatment with control of the reaction time. The degree of deacetylation, monitored using solid-state NMR, revealed that the reaction was pseudo-first order. Based on this, swollen and NaOH-saturated particles are proposed as the reaction system. The weight loss of the partially saponified and neutralized samples after HCl hydrolysis increased linearly with the degree of deacetylation. The crystallinity of the samples was found to increase after acid hydrolysis. According to conductimetric titration, the surface charge density of the crystallites, after acid hydrolysis, was found to increase with base treatment time. The effect of surface charge on the formation of a chiral nematic phase, due to the rodlike nature of the crystallites, was explored. These results show that because the contribution of charged particles to the ionic strength was significant the double layer compression was affected, especially since the surface charge density was close to the Manning limit. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 65:373–380, 1997     

Analysis of products of high-temperature pyrolysis of various hydrocarbons

Ethane, ethylene, acetylene, propane and neopentane have been pyrolyzed at 1173 K, and methane at 1372 K in a flow system, and the volatile pyrolysis products analyzed. Eleven aromatic hydrocarbons, containing 14 or fewer carbon atoms, accounted for 98 + % of the liquid products recovered in each case. Benzene was the main product, followed by naphthalene. No compounds with branched chains or multiple substituents were present, and compounds containing even numbers of carbons comprised 93–99% of each mixture. Acetylene was a major component of the gaseous effluent from each of the initial hydrocarbons. The effect of temperature on the composition of the gaseous effluent during pyrolysis of methane, ethane and ethylene was determined. Carbon film deposition from methane commenced at about 1273 K; from ethane at 1015 K and from ethylene at 1100 K, in each instance coinciding with the appearance of acetylene in the effluent. As the temperature was raised, at first the increase in the rate of carbon deposition closely followed the increase in the concentration of acetylene in the effluent. It is proposed that acetylene may be a common factor in the pyrolysis of aliphatic hydrocarbons, perhaps acting as the precursor of both surface carbon and aromatic hydrocarbons by a process of head-to-tail linkage of two-carbon units at active surface sites to form chains that then undergo dehydrogenation to carbon or cyclization and desorption as aromatic species.     

浅谈安全中的“以人为本”

在安全生产系统中,人的素质是占主导地位的,人的行为贯穿生产过程的每一个环节。企业安全要以人为核心,树立人本观念。安全管理必须重视人的因素,提高人的素质,从精神上、物质上关心人尊重人,以有效的手段约束和激励人,加大安全投入、落实有效措施,保障个人的利益,使大家找到归属感,保护员工身体健康和生命安全,最终形成安全管理＂命运共同体＂,推动企业发展和提高。     

Determination of Quasiequilibrium Work of Adhesion of Elastic Coatings

Present methods for the determination of adhesion bonding of elastic polymeric materials entail certain experimental difficulties. In particular, the necessity of strict centering of the test specimen, and the difficulty associated with application of a homogeneously distributed stress over the whole cross-sectional area (homogeneous detachment or shear), or the excessive expenditure of work resulting from polymer deformation (peel).^1,2

We are suggesting a method to determine the quasi-equilibrium work of adhesion during the peeling process for elastic polymeric coatings, the value of which, as was demonstrated experimentally, does not depend on the coating thickness, deformation or rate of peeling.