Nanocarrier-Loaded Imidaclothiz Promotes Plant Uptake and Decreases Pesticide Residue

There is a great demand for improving the effective utilization of pesticides and reducing their application for sustainable agriculture, and polymeric nanoparticles have provided strong technical support for the efficient delivery of pesticides. To this context, we tried to construct a relatively safe imidaclothiz nano-delivery system for enhanced plant uptake, reduced pesticide residue and improved bioactivity toward green peach aphids. The imidaclothiz could be assembled with the hydrophobic core of SPc through hydrophobic association, which led to the self-assembly of nanoscale imidaclothiz/SPc complex consisting of nearly spherical particles. The SPc decreased the contact angle of imidaclothiz drops and remarkably increased the plant uptake. Furthermore, the bioactivity and control efficacy of imidaclothiz were significantly improved with the help of SPc in both laboratory and field. Excitingly, the residue of imidaclothiz decreased with the help of SPc 7 d after the treatment due to the faster degradation of nanoscale imidaclothiz/SPc complex, which exhibited no negative effects on agronomic traits of tobacco plants. The current study successfully constructed a nano-delivery system for imidaclothiz, which can not only increase the effective utilization of pesticides, but also decrease the pesticide residue.     

景海高速公路全—强风化花岗岩隧道塌方机理分析与处置

景海高速公路宾房2#隧道洞室围岩主要为中风化花岗岩,顶板为全—强风化花岗岩,具有浅埋、富水、自稳能力极差、遇水流塑性强、施工扰动作用下围岩液化现象明显等特点.该文从地质、施工、自然等多方面对隧道塌方进行分析,并提出一套隧道塌方综合治理措施.采用FLAC3D对治理地表注浆段进行了数值模拟,通过计算结果和现场K31+565...     

树脂锚杆在立井罐道梁维修中的应用

崖头煤矿为立井提升,设有主、副两个立井,直径分别为4m、4．8m,井壁厚400mm,井深255m,均为双罐笼提升,规格为It、单层、单车罐笼。罐道梁采用20号工字钢,埋入式固定在井壁上。[第一段]     

A vacuum ultraviolet laser with a submicrometer spot for spatially resolved photoemission spectroscopy

Vacuum ultraviolet(VUV)lasers have demonstrated great potential as the light source for various spectroscopies,which,if they can be focused into a small beam spot,will not only allow investigation of mesoscopic materials and structures but also find application in the manufacture of nano-objects with excellent precision.In this work,we report the construction of a 177 nm VUV laser that can achieve a record-small(〜0.76 μm)focal spot at a long focal length(~45 mm)by using a flat lens without spherical aberration.The size of the beam spot of this VUV laser was tested using a metal grating and exfoliated graphene flakes,and we demonstrated its application in a fluorescence spectroscopy study on pure and Tm3+-doped NaYF4 microcrystals,revealing a new emission band that cannot be observed in the traditional up-conversion process.In addition,this laser system would be an ideal light source for spatially and angleresolved photoemission spectroscopy.     

基于分子动力学的单晶硅纳米振动切削过程

为了研究脆性材料单晶硅原子级的纳米振动切削加工去除机制,应用分子动力学,通过改变刀具椭圆振动切削的模式,进行单晶硅纳米振动切削仿真．仿真结果表明,主切削力和法向力的变化趋势总体上呈现正弦曲线变化,并且已加工表面不同深度的亚表层存在残余应力;同时在不同切削模式下,由于刀具法向的振幅增加,使得法向力和残余应力增大;当刀具通过已加工表面时,残余应力随着亚表层深度降低而减弱;刀具法向振幅高于主切削力方向振幅时,法向力峰值高于主切削力峰值,已加工表面亚表层没有明显驰豫现象．     

化工专业实验教学改革与创新能力培养

从教学内容、教学方法、教学形式及考核方式等方面,探讨了专业实验教学改革与创新能力培养之间的关系。     

医院建筑特点与节能

分析了医院建筑的特点,认为控制院内感染、保证医疗顺利实施就是最大效益,医院节能离开这个前提毫无意义。在这个前提下提出了一些适用于医院节能的常规节能技术与措施,以及针对医院一些特殊医疗科室环境控制的特点与要求宜采取的措施,并进行了分析。     

Factors Associated with White Fat Browning: New Regulators of Lipid Metabolism

Mammalian adipose tissue can be divided into white and brown adipose tissue based on its colour, location, and cellular structure. Certain conditions, such as sympathetic nerve excitement, can induce the white adipose adipocytes into a new type of adipocytes, known as beige adipocytes. The process, leading to the conversion of white adipocytes into beige adipocytes, is called white fat browning. The dynamic balance between white and beige adipocytes is closely related to the body’s metabolic homeostasis. Studying the signal transduction pathways of the white fat browning might provide novel ideas for the treatment of obesity and alleviation of obesity-related glucose and lipid metabolism disorders. This article aimed to provide an overview of recent advances in understanding white fat browning and the role of BAT in lipid metabolism.