对羟苯基丙酮酸双氧化酶抑制剂的研究进展

本文对对羟苯基丙酮酸双氧化酶抑制剂(HPPD)的发现、作用机制、结构与活性、合成方法及主要新品种加以概述。     

HPPD-开发除草剂品种的新靶标

本文概述了作为开发除草剂的新靶标-HPPDD-羟苯基丙酮酸双氧化酶)的基本特征、作用机制及已开发成功的新品种及其使用技术。     

环己二酮类除草剂的研究进展

对羟苯基丙酮酸双氧化酶(HPPD)和乙酰辅酶A羧化酶(ACCase)是化学除草剂重要的标靶酶,就HPPD和ACCase抑制剂的发现历史、作用机理、构效关系及其合成方法分别做综述.基于环己二酮类化合物对HPPD和ACCase均有抑制作用,提出以HPPD和ACCase为双重标靶酶,设计出具有HPPD和ACCase双重抑制剂活性的新型除草剂将是除草剂研究的一个崭新的方向.     

HPPD一开发除草剂品种的新靶标

本文概述了作为开发除草剂的新靶标 -HPPD (对 -羟苯基丙酮酸双氧化酶 )的基本特征、作用机制及已经开发成功的新品种及其使用技术     

三酮类除草剂磺草酮与硝磺酮的作物特性及使用

简要阐述了三酮类除草剂磺草酮与硝磺酮的开发、结构与活性、作用特性、剂型与使用。     

除草剂新作用靶标——HPPD综述

概述了除草剂的新靶标-HPPD（对一羟苯基丙酮酸双氧化酶）及其抑制剂的发现过程、作用机制,简单介绍了几种已经开发成功的HPPD类抑制剂新品种及其使用技术。     

新型三酮类玉米田除草剂Tembotrione的研究

Tembotrione是由拜耳公司2007年研制的三酮类玉米田除草剂,其活性高于硝磺酮（硝磺草酮、甲基磺草酮）,对作物安全。商品名称为Laudis,IUPAC名称为2-（2-氯-4-甲磺酰基-3-[（2,2,2-三氟乙氧基）甲基]苯甲酰基）环己烷-1,3二酮,CA名称为2-[2-氯-4-（甲磺酰基）-3-[（2,2,2-三氟乙氧基）甲基]苯甲酰基]-1,3-环己二酮,     

以对羟基苯基丙酮酸双氧化酶为作用靶标的除草剂研究进展

本文对近年来新发现的除草剂靶标HPPD的研究进展情况作了简单的概述,重点总结了有关HPPD的结构生物学以及除草剂的作用机理、构效关系。     

三酮类除草剂磺草酮与硝磺酮的作用特性与使用

简要阐述了三酮类除草剂磺草酮与硝磺酮的开发、结构与活性、作用特性、剂型与使用。     

HPPD抑制剂类除草剂作用机制和研究进展

介绍了对羟苯基丙酮酸双氧化酶(HPPD)在生物体内的作用机制以及HPPD抑制剂类除草剂的主要品种和最新研究进展。     

小磷酸生产新进展

分析我国小磷酸装置存在的问题,介绍解决这些问题行之有效的方法:磷矿均化,配矿使用;采用ZL型真空冷却装置移走反应热提高装置能力;以及在设备、机泵、流量自调方面的技术进展。对小磷酸技改规模及生产工艺控制要点与适宜条件提出建议。     

Recent advances in the rheooptical characterization of silicon-containing networks

Recent advances in the various theories of strain-birefringenece of polymer networks are presented. The classical theories as well as the more advanced models are outlined together with some recent theoretical results on poly (dimethylsiloxane). Reference to work on other Si-containing polymers is made. The problems of intermolecular correlations occurring in polymer networks and their effect on the observed optical properties are discussed with reference to the optical-configuration parameter. Conclusions report areas of current research.This review was presented at the Second International Topical Workshop, Advances in Silicon-Based Polymer Science.     

紫花苜蓿茎叶处理除草剂混配试验

通过5％咪唑乙烟酸AS与6．9％精噁唑禾草灵EW、15％精吡氟禾草灵EC混用,研究其在紫花苜蓿茎叶除草中的作用效果。结果表明：5％咪唑乙烟酸AS单独使用对杂草的防效优于与其它药剂混配;5％咪唑乙烟酸AS与6．9％精噁唑禾草灵EW或15％精吡氟禾草灵EC混配产生拮抗作用,降低防效;5％咪唑乙烟酸AS单用可使紫花苜蓿增产49．56％。     

PVC/ABS合金国内最新研究进展

综述了国内PVC/ABS合金的生产现状和最新研究进展,从PVC/ABS合金的组成、成型方法和加工影响因素3个方面描述了合金的共混改性,并对国内PVC/ABS合金的发展提出了一些建议.     

PolyHIPEs: Recent advances in emulsion-templated porous polymers

Porous polymers with well-defined porosities and high specific surface areas in the form of monoliths, films, and beads are being used in a wide range of applications (reaction supports, separation membranes, tissue engineering scaffolds, controlled release matrices, responsive and smart materials) and are being used as templates for porous ceramics and porous carbons. The surge in the research and development of porous polymer systems is a rather recent phenomenon. PolyHIPEs are porous emulsion-templated polymers synthesized within high internal phase emulsions (HIPEs). HIPEs are highly viscous, paste-like emulsions in which the major, “internal” phase, usually defined as constituting more than 74% of the volume, is dispersed within the continuous, minor, “external” phase. This review focuses upon the recent advances in polyHIPEs involving innovations in polymer chemistry, macromolecular structure, multiphase architecture, surface functionalization, and nanoparticle stabilization. The effects of these innovations upon the natures of the resulting polyHIPE-based materials (including bicontinuous polymers, nanocomposites, hybrids, porous ceramics, and porous carbons) and upon the applications involving polyHIPEs are discussed. The advances in polyHIPEs described in this review are now being used to generate new families of porous materials with novel porous architectures and unique properties.