大豆(Glycine max)作为一种豆科植物,可以在根瘤菌侵染后形成特殊的根器官(根瘤)从而和根瘤菌形成共生的关系来固定大气中的氮气,保证大豆即使在低氮含量的土壤中也能正常生长。油菜素甾醇(brassinosteroids,BRs)作为一种类固醇激素,可以调控大豆结瘤,但是BRs对大豆结瘤的调控机制却并不清楚。本文以大豆为研究对象,通过一系列生理生化实验研究了BRs对大豆根瘤发育的调控,主要研究
The brown planthopper(BPH,Nilaparvata lugens St(a)l)is an important pest of rice,and it has a record of quickly overcoming rice resistance,possibly associat
氮氧化物(NOx)是一种严重的大气污染物，它不仅会对环境、生态造成危害，甚至危及到人类身体健康。有效的控制 NOx的排放成为当今世界一大环境战略任务。选择性催化还原(SCR)技术
Commentators in clinical disciplines have argued that human genomic project has “failed to deliver” what it promised! They suggest that the human genome h
Lineage-specific microRNAs(miRNAs)may contribute to functions specific to hematophagous mosquitoes and,as such,have potential for contributing to the develo
Calliptamus italicus(Orthoptera: Acrididae)is a serious pest in arid and semi-arid grasslands of XinjiangProvince,north-eastern China,and its outbreaks are
随着科学技术和石油化工工业的飞速发展，各种离心压缩机得到了广泛应用。密封是压缩机的重要组成部分，尤其是在高压、易燃、易爆、有毒气体等苛刻条件，密封技术至关重要。一旦密
对二甲苯(pX)是重要的化工原料。目前，二甲苯吸附分离和甲苯选择性歧化是合成pX的主要工艺，这些制备工艺过程存在能耗大以及甲苯的利用率较低等问题。本文以甲苯和碳酸二甲酯(D
The close association between deregulated intestinal microbial consortia and host diseases such as chronic inflammation has been recognized since the birth