0．5％印楝素乳油防治芸豆美洲斑潜蝇田间药效

0.5％印楝素乳油对美洲斑潜蝇有很好的防治效果，田间药效试验表明：稀释600～800倍喷雾，施药后3d的防效达76．04％～85．94％，药后7d的防效达到81．32％-84．05％，而且对作物安全。     

50%施保功WP防治葡萄黑痘病和炭疽病田间药效试验

田间药效试验结果表明，50％施保功WP800～1600倍液对葡萄黑痘病防效在80％以上其800～1200倍液对葡萄发疽病防效在75％以上。     

溶菌灵防治哈密瓜蔓枯病试验研究

试验结果表明，35％溶菌灵悬浮剂防治哈密瓜蔓枯病有良好的防效，发病初期用600倍、800倍液喷药保护，7天左右喷一次，连喷5次，最后一次喷药后10天调查，防效分别达85．4％、71．8％。另可在植株初见病或因整枝造成伤口时用100倍药液涂于茎发病部位或伤口上，能起到清毒愈合作用，使植株恢复生长。     

68.75%易保水分散粒剂对保护地生菜灰霉病的防治

田间试验结果表明，用68．75％易保水分散粒剂800、1000倍液对生莱灰霉病防治效果较好，达到极显著水平，平均防治效果为86．03％；1500倍液对该病防治效果与对照药剂50％速克灵可湿性粉剂800倍液相当；而50%扑海因可湿性粉剂800倍液则防效较差。易保水分散粒剂的室内抑菌效果也较为理想。     

25%敌虫灵水乳剂根灌防治萝卜根蛆的药效试验

２５％敌虫灵（甲基异柳磷）水乳剂对萝卜根蛆具有较好的防治效果。根灌试验表明,２５％敌虫灵水乳剂５００倍液防效可达１００％,７５０倍液的防效为９５．２％,而１０００倍液的防效与４０％甲基异柳磷乳油１５００倍液的防效大致相同,但可降低成本３１．５％。试验结果表明田间应用的最佳稀释浓度为７５０￣１０００倍液。     

咪鲜胺等新型杀菌剂对葡萄病害的防治效果

本文选用5种低毒杀菌剂对葡萄灰霉病和黑豆病进行了田间防治试验,结果表明,25%使百克1000倍液对葡萄灰霉病和黑豆病防治效果都最好,80%大生-M800倍液对灰霉病防效好,40%福星6000倍液和5%安福1000倍液对黑豆病防效好,32.5%丰收纯800倍液次之,其它供试药剂防效不理想。     

灭铃净乳油防治棉铃虫药效试验

使用灭铃净乳油１０００,２０００,３０００倍液防治棉铃虫,药后７天防效均达到８５．４％以上;１０００倍液的防效可达９４．５％,保蕾效果为９２．１３％。１０００倍,２０００倍处理防效极显著地高于２．５％功夫菊酯乳油２０００倍处理。     

世高等药剂防治采种西葫芦白粉病药效研究

试验结果表明，世高10％WGl000～1500倍液，12．5％烯唑醇WPl000倍液，福星40％EC8000倍液，对采种西葫芦白粉病防效达79.0％～95．8％，而15％三唑酮WPl000倍液的防效仅为41．0％。     

70%敌溴菊酯防治棉叶螨试验

试验结果表明，７０％敌溴菊酯乳油２０００、３０００、４０００倍液防治棉叶螨，１０天后的防效为９０．２～９５．２％，显著高于２０％双甲脒１５００倍液和２．５％溴氰菊酯３０００倍液７０％的防效，略低于５０％克螨特３０００倍、１５％哒螨灵３０００倍、２０％三氯杀螨醇１５００倍液的防效，但差异不显著。建议生产中敌溴菊酯的使用浓度以３０００倍为宜。     

4种杀菌剂对向日葵黑茎病的田间防治效果

选用4种杀菌剂对向日葵黑茎病进行田间防效试验,结果表明,10%苯醚甲环唑WG1000倍液、50%多菌灵WP500倍液、70%甲基硫菌灵WP800倍液的防效较高,分别为77%、73.4%、72.6%;经方差分析显著优于防效次之的50%嘧菌酯SC2000倍液(防效65.5%)和其他2种药剂。建议生产上使用10%苯醚甲环唑WG1000倍液、50%多菌灵WP500倍液、70%甲基硫菌灵WP800倍液。     

O.5%印楝素乳油防治芸豆美洲斑潜蝇田间药效

0.5%印楝素乳油对美洲斑潜蝇有很好的防治效果,田间药效试验表明稀释600～800倍喷雾,施药后3d的防效达76.04%～85.94%,药后7d的防效达到81.32%～84.05%,而且对作物安全.     

Evaluation of portable dilution system for aerosol measurement from stationary and mobile combustion sources

This study presents the emission factor of PM_2.5, elemental carbon (EC), organic carbon (OC), and water-soluble ions for biomass-fired-induced downdraft gasifier and light duty diesel vehicle (LDDV). A portable dilution system (PDS) developed for on-field measurement of aerosol and their precursors from combustion sources were used for quenching of aerosol at near-atmospheric condition before collection on filters. PDS consists of a heated duct and particle sampling probe, dilution tunnel, zero air assembly, and a power supply unit. PDS was evaluated under controlled conditions in laboratory for gasifier cookstove and LDDV over wide range of dilution ratios to understand the effect of dilution on mixing, particle formation, and loss. The invariability in CO₂, recorded along the length and at radial distances of cross-section of dilution tunnel, confirmed the rapid and homogenous mixing inside the dilution tunnel. The particle loss and nucleation inside the dilution tunnel accounted for 6–20% at different dilution ratios (30:1–90:1). PM_2.5 emission factors for wood combustion in gasifier cookstove showed mild decrease (13%) with increasing dilution ratio from 75:1 to 108:1. However, a considerable decrease of 37% (221–139 mg km^?1) was observed for LDDV with increase in dilution ratio from 39:1 to 144:1. Similar decrease in particulate organic carbon emission rates were observed indicating scarcity of sorptive organics, and insufficient residence time for condensation limited the particle formation from vapor phase organic compounds at high dilution ratios.

© 2016 American Association for Aerosol Research     

Effect of composite preparation techniques on electrical and mechanical properties and morphology of nylon 6 based conductive polymer composites

Nylon 6/carbon black conductive composites were prepared using two different methods, masterbatch dilution and melt mixing. Their effect on the size and distribution of carbon black agglomerates in the matrix was studied in terms of electrical and mechanical properties and morphology. The electrical resistivity of composites prepared by both methods decreased with increasing filler composition. The electrical resistivity of the diluted masterbatch composites and the melt mixed composites was reduced from the resistivity of pure nylon 6, 10¹⁵ “ohm, cm”, to 10⁷ “ohm, cm” at 1 and 6 wt % of carbon black, respectively. As the filler content increased, elongation at break and impact strength decreased, but tensile modulus increased. Masterbatch dilution method provided smaller carbon black clusters in composites compared to melt mixing method. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 2520–2526, 2006     

抗人红细胞表面抗原glycophorin A杂交瘤细胞株的建立

应用杂交瘤技术,用纯化人红细胞表面抗原glycophorin A“N”型免疫纯系BALB/c小鼠,用glycophorin A“M”型作为固相抗原,用EIA间接筛选出识别“M”、“N”血凝抗原以外的抗glycophorin A的抗体,进而利用Coombs原理,加入抗免疫球蛋白,筛选出非凝集型抗glycophorin A抗体,得到61株非凝集型抗glycophorin A杂交瘤,其中12株有限稀释法克隆4次后得到5株稳定分泌非凝集型抗体的杂交瘤并进行初步鉴定。单抗上清血凝效价可达1:20～50,腹水血凝效价为1:800～1:1 600。     

烧结温度对防氧化涂层性能影响研究

研制了一种以磷酸盐涂层和陶瓷涂层相结合的新型复合防氧化涂层,针对不同的烧结温度研究了这种复合涂层的防氧化性能。结果表明：在700℃静态氧化30h后,800℃烧结的复合涂层试样的氧化失重率最小,为0．99％,经过900℃、3min←→室温、2min30次和1100℃、3min←→室温、2min10次连续热震后,其氧化失重率仅为0．31％,氧化速率为1．34×10^-7g·cm^-2·s^-1。SEM观察结果显示不同烧结温度制备的涂层表面微观形貌明显不同,800℃烧结的涂层表面完整致密,氧化后涂层仍然保持完好,没有脱落,说明该涂层与炭基体的结合性能以及热稳定性能良好,适合作为飞机炭刹车副的防氧化涂料。     

防治梨黑星病田间药效试验

为筛选出防治梨黑星病的有效药剂，2002年以宝珠梨为对象，对梨黑星病进行田间防治试验，结果表明：10％恶醚唑3000倍液、40％氟硅唑3000倍液和50％醚菌酯4000倍液对梨黑星病防效分别为88％、83％和81％。生产上建议于梨树花前、花后及进入雨季后施药进行防冶。     

若干药剂对稻纵卷叶螟防效的比较研究

小区试验表明,药后7d和15d,1.8%阿维菌素EC1500mL/hm2、1%甲氨基阿维菌素苯甲酸盐EC1500mL/hm2、5%氟虫腈SC750mL/hm2、48%氟腈.毒死蜱EC900mL/hm2和25%氟腈.异丙威WP750g/hm2的保叶和杀虫效果均超过85%,好于其它供试药剂。     

Doped Ni Catalysts for Methane Reforming with CO<Subscript>2</Subscript>

Pb, Sb, Bi and Te doped Ni catalysts were prepared and used for methane reforming with CO₂ in order to diminish coke deposition. It was found that small amounts of Pb doped Ni catalysts exhibited excellent coke resistance ability with minor loss of the reforming activity. As the added amount of Pb increased from 0 to 0.015 (mole ratio between Pb/Ni), coke formation rate decreased from 166.7 mg-coke/g-cat h (on Ni/SiO₂) to 0, while the reforming activity decreased slightly from 73.2% to 63.3% (conversion of CO₂) at 800 °C, 60,000 ml(STP)/g-cat·h (CH₄ CO₂=1:1, no dilution gas in feed). Higher amounts of Pb and Sb, Bi, Te made Ni catalyst deactivated for methane reforming with CO₂.     

柠檬酸钠生产工艺中脱色后的活性炭再生研究

柠檬酸钠生产过程中,因柠檬酸由发酵而来,其溶液中含有残糖、碳氢化合物、蛋白等杂质,高温过程中会发生相应的化学反应,造成溶液颜色加深,经活性炭处理后．进入下一工序,处理后的活性炭依据环保要求不能排放,因而必须妥善处理。本实验采用盐酸预处理、微波降解、氢氧化钠洗脱、氢氧化钾活化的方法对活性炭再生。研究表明：用20％的HCl进行对活性炭预处理;微波加热温度采用800--900℃,活性炭湿度在30％～40％;用20％的NaOH洗脱,90℃下反应1h,最后用熔融的无水氢氧化钾括化处理,再生后的活性炭活性恢复到原来的94％左右。     

Lovastatin production by Aspergillus terreus in a two‐staged feeding operation

BACKGROUND: Lovastatin is known to inhibit its own synthesis in the fungus Aspergillus terreus. Therefore, the use of a fermentation strategy that continuously removes some of the lovastatin produced from the bioreactor can enhance its productivity. This paper reports on the effects of dilution rate and the composition of the feed medium on lovastatin production by A. terreus. RESULTS: The feeding strategy consisted of an initial batch/fed‐batch phase and a semi‐continuous culture phase in which the pelleted biomass was retained inside a slurry bubble column. A nitrogen‐free medium was fed at various fixed dilution rates in the semi‐continuous phase. In experiments that were designed to assess the effects of the composition of the medium, the dilution rate was held at 0.42 d^?1, but different feed media were used in separate runs. The best two‐staged production strategy was shown to consist of a 96 h batch/fed‐batch phase that used a nutritionally complete medium. This was followed by a semi‐continuous operation using a medium that was free of both nitrogen and carbon sources. CONCLUSION: Semi‐continuous operation enhanced productivity of lovastatin by 315% compared with a conventional batch operation. The optimal dilution rate in semi‐continuous operation was about 0.42 d^?1. Copyright © 2008 Society of Chemical Industry