溴氟菊酯防治菜青虫

１９９５、１９９６年用１０％溴氟菊酯乳油进行了防治菜青虫的田间药效试验。结果表明：用１０％溴氟菊酯乳油１０００和２０００倍稀释液，药后１天就达到了８０％以上的防效；药后７天，防效仍为９０％以上，各处理的防效均高于２０％甲氰菊酯乳油２０００倍液的防效。     

辛.溴氟乳油的反相高效液相色谱分析

采用ＲＰ－ＨＰＬＣ技术，以双内标法一次进样同时测定辛硫磷和溴氟菊酯混配乳油中的两种有效成分含量。在选定的色谱条件下，两种有效成分与两个内标物之间以及与乳油中其他组分之间可实现完全分离。该法准确快速，精度度好。辛硫磷的回收率为９９．２９－１００．７％，溴氟菊酯的回收率为９９．３４％－１００．２％，辛硫磷ＲＳＤ％＝０．２６％，溴氟菊酯ＲＳＤ％＝２．５１％。     

十二种农药防治棉蚜效果研究

本文报道了１２种农药防治棉蚜的药效试验结果，氯氟大菊酯、氰久可湿性粉剂的效果最好。第５天防效达到１００％，持效期达１０天以上。     

七种杀虫剂对棉蚜的田间药效比较研究

敌溴菊酯等七种杀虫剂的田间药效比较试验结果表明，敦煌棉区棉蚜对敌溴菊酯和氰久合剂二种混配剂较为敏感，田间防效１０￣１５天均在９０％以上。久效磷、乙基硫环磷和灭多威可做为棉蚜防治中的轮换用药。     

溴氟菊酯防治果树,蔬菜上四种蚜虫的试验研究

１９９５年用１０％溴氟菊酯乳油１０００～３０００倍液对果树上的苹果黄蚜、桃蚜及蔬菜上的甘蓝蚜、菜缢管蚜进行了小区药效试验。结果表明：该药对上述四种蚜虫均具有良好的防治效果，明显优于２０％甲氰菊酯乳油２０００倍液，药后７天，１０００、２０００倍液对四种蚜虫防治效果均在９０％以上，对果树上的两种蚜虫持效期可达１４天左右。     

辛硫磷防治棉铃虫药效试验

１９９５年用４０％辛硫磷乳油进行了防治棉铃虫药效试验，亩用该药５０，７５，１００毫升，在第二遍药后３天均达到７０％以上防治效果，明显高于２．５％氯氟氰菊酯乳油亩用６０毫升的防效５６．５０％。该药是一种防治抗性棉铃虫的优良杀虫剂，建议棉田用量为亩施７５－８０毫升为宜。     

50吨／年三氟氯氰菊酯生产装置在大成农药公司投产

50吨／年功夫菊酯生产装置日前在大成农药股份有限公司投产，生产出的原粉含量达到96％以上。功夫菊酯又称三氟氯氰菊酯，是一种具有极强胃毒和触杀作用的拟除虫菊酯类杀虫剂，可广泛用于防治粮食和经济作物虫害，还可用来防治公共卫生害虫。功夫菊酯具有以下优点：一是克服了一些拟除虫菊酯不能防治螨虫的弱点；二是药效高，施药量少，防治成本低；三是对生态环境影响小。     

含溴农药生产状况与机会(二)

介绍了四溴菊酯、溴氟菊酯、除尽、溴甲烷、溴螨酯、溴敌隆、溴鼠隆、溴菌清、溴硝醇、苯扎溴胺、氯溴异氰尿酸、溴苯腈的应用领域、毒性和生产厂家。对杀虫杀螨剂、杀菌剂和除草剂的市场机会进行了分析,指出溴苯腈是一个值得关注的农药品种。     

λ－氯氟氰菊酯分析方法─—世界卫生组织农药规格试行标准

λ－氯氟氰菊酯分析方法─—世界卫生组织农药规格试行标准λ－氯氟氰菊酯系α－氰基－３－苯氧苄基－３（２－氯－３，３，３－三氟丙烯基）２，２－二甲基环丙烷羧酸酯（Ｚ）－（１Ｒ，３Ｒ），Ｓ－酯和（Ｚ）－（１Ｓ，３Ｓ），Ｒ－酯１：１的混合物，原药中，此含量８...     

硫双威,双威菊酯防治小菜蛾的药效试验

防治小菜蛾田间小区药效试验结果表明：２０％硫双威和２０％双威菊酯可湿性粉剂在小菜蛾幼虫２－３龄期进行防治，均有较好的防效。每亩用１００克２０％可湿性粉剂校正防效在６６％以上，持效期可达７０天以上，两者药效和持效优于或接近每亩６０克１０％氯氰菊酯。     

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。     

几种乙炔加压设备性能的比较

阐述并比较了几种加压设备在乙炔加压清净过程中的性能和特点。     

三种煤样燃烧热的测定

本文通过三个厂家提供的三种煤样燃烧热的测定,由测定结果综合得出3号煤样燃烧最完全、燃烧热也最大,是三个煤样中最好的一种。     

Semi-empirical equation of state of metals. Equation of state of aluminum

A semi-empirical equation of state for metals is described. Its capabilities are demonstrated by the example of the equation of state for aluminum. New experimental data are presented on the location of the isentrope of aluminum for unloading from the state at p = 229.71 GPa on the shock adiabat to an aerogel (SiO₂) of density 0.08 g/cm³. __________ Translated from Fizika Goreniya i Vzryva, Vol. 44, No. 2, pp. 61–75, March–April, 2008.     

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。     

小议汽车涂装工艺设计对涂装成本的影响

论述了涂装工艺设计对涂装设备投资、涂装生产成本的影响。     

Calorimetric and Computational Study of Enthalpy of Formation of Diperoxide of Cyclohexanone

A thermochemical rather simple experimental technique is applied to determine the enthalpy of formation of Diperoxide of ciclohexanone. The study is complemented with suitable theoretical calculations at the semiempirical and ab initio levels. A particular satisfactory agreement between both ways is found for the ab initio calculation at the 6–311G basis This set level. Some possible extensions of the present procedure are pointed out.     

Measurement of the gradient of viscosity with composition of mixtures of non-ideal gases

A perturbation viscometer is a differential capillary viscometer that measures the logarithmic viscosity gradient of the viscosity-composition curve for gas mixtures. Measurements are made at different gas mixture compositions. Integration of the logarithmic viscosity gradients measured over the full composition range gives the mixture viscosity relative to the viscosity of one of the pure components of the gas mixture. This method is attractive because, for measurements of equal precision, integration of the gradients is potentially an order of magnitude more precise than measurement of the viscosities directly. It can also work at high and low temperatures and perhaps high pressures.The perturbation viscometer has been used to make measurements on ideal gas mixtures at ambient and elevated temperatures. The situation is more complicated when the gas mixtures are non-ideal. Extra effects due to density differences, molar volume change on mixing and differential thermal expansion may be measured in addition to the desired viscosity change producing systematic errors in the results. Thus, a more sophisticated apparatus is required. The standard perturbation viscometer has been modified to separate out the extra effects to permit measurement of the true change in viscosity. In addition, the theoretical operation of the modified apparatus has been revised to account for the design changes to permit calculation of the viscosity-composition profiles from the results.The apparatus has been tested using helium-HFC-125 mixtures and two new viscosity-composition profiles are presented for these mixtures at 23 and . Internal consistency tests have been used to confirm that the data produced are of high quality with an estimated uncertainty in the viscosity ratio data at of 0.9% and at of 1.5%.     

塔设备改造选型的分析

就当前扩产增容中塔设备设计和改造时板式塔和填料塔的选型问题加以分析。在评述目前国内常用的几种塔板和新型填料之后，着重介绍一种新型塔板（导向梯形浮阀塔板）和一种新型填料（波环填料——乾隆帕克）。     

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。