Ethoxylated rapeseed oil derivatives as novel adjuvants for herbicides

Ethoxylates of rapeseed oil and of methylated rapeseed oil were synthesized and tested as adjuvants for 2,4-D and phenmedipham. Provided they had less than 6 units of ethylene oxide (EO), 1.0 to 10 g litre(-1) ethoxylates in water induced droplet spreading on barley leaves. In an acetone-based medium all derivatives strongly promoted the foliar uptake of 2,4-D, with no clear influence of the ethoxylation degree. In the same medium there was a negative influence of ethoxylate chain length on the foliar uptake of phenmedipham. In a water-based medium, phenmedipham applied with rapeseed oil emulsified with ethoxylated (20 EO) rapeseed oil displayed uptake rates close to a commercial preparation. The same was true for phenmedipham applied with ethoxylated (2 EO) methylated rapeseed oil. In bioassays, phenmedipham prepared with methylated rapeseed oil emulsified with ethoxylated (20 EO) rapeseed oil was as efficacious on barley as a commercial formulation. The same was true for phenmedipham prepared with ethoxylated (2 EO) methylated rapeseed oil. However, neither rapeseed oil nor methylated rapeseed oil emulsified with ethoxylated (2 EO) methylated rapeseed oil conferred good efficacy to phenmedipham. Hence, ethoxylated rapeseed oil derivatives are promising adjuvants or formulants for herbicides.     

First report of the Q biotype ofBemisia tabaci in Japan by mitochondrial cytochrome oxidase I sequence analysis

The recent upsurgence ofBemisia tabaci (Genn.) as an important insect pest and vector ofTomato yellow leaf curl virus (TYLCV) is directly linked to serious damage to tomato crops grown throughout Japan. The molecular genetic identification and phylogenetic relationships of 12B. tabaci populations collected from representative locations in Japan were determined based on the mitochondrial cytochrome oxidase I (mtCOI) sequence. Phylogenetic analysis of the whitefly mtCOI sequence indicated that both the invasive B and Q biotypes now occur in Japan. The Q biotype was found at four locations: Mihara in Hiroshima, Nishigoshi in Kumamoto, Miyanojo and Okuchi in Kagoshima prefectures; the remaining eight collections were identified as the B biotype. This is the first report of the introduction of Q biotype in Japan. http://www.phytoparasitica.org posting July 21, 2006.     

Adipocyte-derived relaxing factor,a new vasodilative factor

Although our knowledge of ADRF (adipocyte-derived relaxing factor) is extremely limited,the little that is known has already revealed a promising future in this newly found factor.Firstly,it is secreted by adipose tissue,which is a abundantly and extensively distributed in human body and has become a hot spot for research work in recent years.Secondly,ADRF has shown a significant vasodilative action in a considerable number of experiments conducted on arteries of various sizes,from different body parts of different species of animals,including human.In this article,we introduce the development of ADRF research,sum up its known properties,including its Ca2+,protein tyrosine kinase,and protein kinase A dependent releasing,K+ channel mediated functioning,and interfered effect in different pathological models,and propose problems surrounding this factor and directions for future research work.     

新型具有力感知的柔性果蔬采摘机械手研究

研发了基于设施农业的果蔬采摘机械手,包括具有3个旋转关节自由度的采摘机械臂及具有力反馈功能的三指果蔬采摘末端执行器,并对其控制系统进行了开发。通过采摘模拟试验,验证了其作业性能、采摘效果。试验结果表明:采摘机械手各关节与控制系统配合良好,运行稳定;采摘末端执行器手指控制灵活,传感器响应灵敏,能够实现稳定抓取并不损伤果实,具有推广价值。     

植物资源库的建立和管理

文章阐述了保护和开发植物资源的重要性，据此提出了要建立植物资源库以保存珍、稀濒危植物的种质资源。并根据植物资源库建立的规模，提出了具体的规划方案和管理措施。同时论证了植物资源库的利用价值。     

汽车销售中服务提高方法研究

交车是客户最兴奋的时刻,也是与客户保持良好关系的开始。通过标准的销售流程,使客户拥有愉快满意的交车体验,可以有效提升客户满意度,保持长期的友好关系。同时也让客户对汽车经销商的产品与服务产生高度认同,发掘更多的商机。文章通过分析新车交付流程,探索了提高顾客满意度的方法。     

如何减轻果蔬储藏中侵染性病害

采用了辐射与低温臭氧相结合的方法，可以减轻果蔬储藏中的侵染性病害，同时，还可以延长果蔬的保鲜期。     

我国蔬菜清洗技术的研究现状与展望

蔬菜清洗是蔬菜加工过程中的重要的环节,它直接影响蔬菜加工的质量。随着人们生活水平的提高,蔬菜需求量不断增加,推动了蔬菜清洗技术的发展。探讨了蔬菜加工中应用的各种清洗技术,简要阐述了我国蔬菜清洗技术的未来发展方向。     

北海市瓜菜大棚设施栽培现状与发展对策

从规模、新技术应用、栽培模式、效益等方面阐述了北海市瓜幕大棚设施栽培的现状,同时分析了存在的问题,并针对现状和存在的问题提出了政策扶持、创建品牌、强化培训、加大投入和加强产品质量检测等发展对策,旨在促进大棚设施栽培产业的健康可持续发展.