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微波诱导H_2O_2降解罗丹明B溶液的研究

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安徽化工 2017年第2期43卷 50-52页

作者：李江陈志敏张翠红太原工业学院化学与化工系山西太原030008

研究了微波诱导H_2O_2降解罗丹明B的效果。主要考查了微波辐射时间、双氧水的投加量、罗丹明B初始浓度、溶液pH值、微波功率等因素对罗丹明B降解率的影响。实验结果表明:罗丹明B浓度为10mg/L,30%的双氧水2m L,800W微波辐射8min,罗丹明B... 详细信息

研究了微波诱导H_2O_2降解罗丹明B的效果。主要考查了微波辐射时间、双氧水的投加量、罗丹明B初始浓度、溶液pH值、微波功率等因素对罗丹明B降解率的影响。实验结果表明:罗丹明B浓度为10mg/L,30%的双氧水2m L,800W微波辐射8min,罗丹明B的降解率可达88.3%;实验还发现,微波或双氧水单独作用于罗丹明B溶液,基本没有降解作用。

关键词：微波辐射 H2O2 罗丹明B 降解率

Effects of the vegetation restoration years on soil microbial community composition and biomass in degraded lands in Changting County,China

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Journal of Forestry Research 2020年第4期31卷 1295-1308页

作者： Yonghui Bai Xuan zha Shifa chen Key Laboratory for Subtropical Mountain Ecology(Ministry of Science and Technology and Fujian Province Funded) School of Geographical SciencesFujian Normal UniversityFuzhou 350007China College of Tourism and Geography Shaoguan UniversityShaoguan 512005China

We evaluated the effects of the number of years of restoration of vegetation on soil microbial community structure and biomass in degraded *** investigated the microbial community structure by analyzing their phospholipid fatty acids then examined microbial biomass carbon and nitrogen by chloroform fumigation extraction of restoration soils over several *** data were compared with those of highly degraded lands and native vegetation *** results show that the duration of vegetation on the sites substantially increased microbial biomass and shifted the microbial community structure even after only 4 ***,microbial communities and biomass did not recover to the status of native vegetation even after 35 years of vegetation cover.A redundancy analysis and Pearson correlation analysis indicated that soil organic carbon,total nitrogen,available potassium,soil water content,silt content and soil hardness explained 98.4%of total variability in the microbial community *** organic carbon,total nitrogen,available potassium and soil water content were positively correlated with microbial community structure and biomass,whereas,soil hardness and silt content were negatively related to microbial community structure and *** study provides new insights into microbial community structure and biomass that influence organic carbon,nitrogen,phosphorus and potassium accumulation,and clay content in soils at different stages of restoration.

关键词： Vegetation restoration Soil microorganisms Environmental factors PLFA Degraded red soil lands

基于Boost/Buck的直流集成光伏模块串联系统

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机电工程 2016年第10期33卷 1248-1252页

作者：陈予吒李玉玲王管建杭州士兰微电子股份有限公司浙江杭州310013 浙江大学电气工程学院浙江杭州310027

针对光伏模块在各模块功率不均衡条件下,直流集成光伏模块串联系统最大功率跟踪失衡、系统母线电流受限等问题,提出了一种基于Boost/Buck电路的直流集成光伏模块串联系统,通过对该Boost/Buck电路工作机理和参数对系统性能影响的研究,引... 详细信息

针对光伏模块在各模块功率不均衡条件下,直流集成光伏模块串联系统最大功率跟踪失衡、系统母线电流受限等问题,提出了一种基于Boost/Buck电路的直流集成光伏模块串联系统,通过对该Boost/Buck电路工作机理和参数对系统性能影响的研究,引入了基于载波重叠的调制方式控制电路的开关管通断,并通过合理设计载波重叠区域,使该系统变换器可根据光伏模块输入侧的不同工况,在Boost、Buck以及Boost/Buck三种工作模式之间自动切换。研究结果表明,该变换器能够实现系统宽范围的最大功率跟踪,并且即使在各模块功率严重失衡的情况下,也能使各模块跟踪到自身的最大功率点,使得各串联光伏模块之间互不影响。

关键词： Boost/Buck电路载波重叠最大功率跟踪直流集成光伏模块

Research progress on low dielectric constant modification of cellulose insulating paper for power transformers

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Frontiers of Chemical Science and Engineering 2023年第8期17卷 991-1009页

作者： Wenchang Wei Haiqiang chen Junwei zha Yiyi zhang Guangxi Power Transmission and Distribution Network Lightning Protection Engineering Techndogy Research Center Guangxi UniversityNanning 530004China School of Chemistry and Biological Engineering University of Science and Technology BeijingBeijing 100083China Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing 100083China

Because of the increase in the transmission voltage levels,the demand for insulation reliability of power transformers has increasingly become *** insulating paper is the main insulating component of power *** improve the insulation level of ultrahigh voltage transformers and reduce their weight and size,reducing the dielectric constant of oil-immersed cellulose insulating paper is highly *** is used to produce power-transformer insulating papers owing to its excellent electrical properties,renewability,biodegradability and *** dielectric constant of a cellulose insulating paper can be effectively reduced by chemical or physical *** study presents an overview of the foreign and domestic research status of the use of modification technology to reduce the dielectric constant of cellulose insulating *** the mentioned methods are analyzed in this ***,some recommendations for future modified cellulose insulating paper research and applications are *** paper can provide a reference for further research on low dielectric constant cellulose insulating paper in the future.

关键词： low dielectric constant chemical and physical modification cellulose insulating paper transformer nanomaterials

Triple-phase interfaces of graphene-like carbon clusters on antimony trisulfide nanowires enable high-loading and long-lasting liquid Li_(2)S_(6)-based lithium-sulfur batteries

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Journal of Energy Chemistry 2021年第8期30卷 599-607,I0013页

作者： chenyang zha Donghai Wu Xiuquan Gu Houyang chen Key Laboratory of Flexible Electronics(KLOFE) Institute of Advanced Materials(IAM)Nanjing Tech UniversityNanjing 211816China Henan Key Laboratory of Nanocomposites and Applications Institute of Nanostructured Functional MaterialsHuanghe Science and Technology CollegeZhengzhou 450006China School of Materials and Physics China University of Mining and TechnologyXuzhou 221116JiangsuChina Department of Chemical and Biological Engineering State University of New York at Buffalo14260-4200 BuffaloUSA

High performance of lithium-sulfur batteries have been dragged down by their shuttling behavior which is complicated multiphase transition-based 16-electron redox reactions of the S8/Li2 *** this article,the triple-phase interfaces of graphene-like carbon clusters on antimony trisulfide(C-Sb_(2)S_(3))nanowires are tailored to design a multifunctional polysulfide host which can inhibit migration of polysulfides and accelerate conversion kinetics of redox electrochemical *** from the triple-interface design of polysulfides/Sb_(2)S_(3)/carbon clusters,the C-Sb_(2)S_(3) electrode not only anchors polysulfide migration by the synergistic effect of Sb,S,and C atoms as interfacial active sites,but also the graphene-like carbon clusters shorten the diffusion paths to further favor redox electron/ion transport through the liquid(electrolyte/polysulfide)and solid(Li2 S/S8,carbon clusters,and Sb_(2)S_(3))-based ***,these Li_(2)S_(6)-based C-Sb_(2)S_(3) cells possess high sulfur loading,excellent cycling stability,impressive specific capacity,and great rate *** work of interfacial engineering reveals insight for powering reaction kinetics in the complicated multistep catalysis reaction with multiphase evolution-based chargetransfer/non-transfer processes.

关键词： Triple-phase interfaces Graphene-like carbon Antimony trisulfide High preformance Lithium-sulfur batteries

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玉屏风散加味治疗变应性鼻炎的临床研究进展

中医眼耳鼻喉杂志 2016年第1期6卷 37-39,44页

作者：陈伊芮张若蒙彭顺林成都中医药大学四川成都610075

玉屏风散为中医益气固表的经典方剂，其运用广泛，特别是近年在该方基础上加味治疗变应性鼻炎中体现出中医药治疗疾病的独特优势。现将近五年该方加味治疗变应性鼻炎的临床研究进行梳理和回顾以更好的指导临床。

关键词：玉屏风散加味变应性鼻炎临床研究综述

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球磨仪研磨硫磺粉的静电作用

中国粉体技术 2017年第3期23卷 91-95页

作者：付瑜吕强强吕娟杨燕霞陈海焱张明星西南科技大学环境与资源学院四川绵阳621010 河南理工大学安全科学与工程学院河南焦作454000

采用高频振动球磨仪研磨硫磺,对研磨过程中硫磺粉的起电特性进行测试和分析。结果表明:控制研磨转速分别为1 200、1 500、1 800 r/min时,薄片状硫磺带静电量到达饱和值的时间为40、60、100 s,荷质比增大速率为0.269、0.470、0.700 nC/(g... 详细信息

采用高频振动球磨仪研磨硫磺,对研磨过程中硫磺粉的起电特性进行测试和分析。结果表明:控制研磨转速分别为1 200、1 500、1 800 r/min时,薄片状硫磺带静电量到达饱和值的时间为40、60、100 s,荷质比增大速率为0.269、0.470、0.700 nC/(g·s),粉状硫磺所带静电量到达饱和值的时间分别为30、40、70 s,荷质比增大速率为0.416、0.701、0.979 nC/(g·s);采用碳化钨材质的研磨体,研磨后的硫磺粉所带静电量最小,不锈钢研磨材质的是碳化钨的1.39倍,氧化锆研磨材质的是碳化钨的3.82倍;增大硫磺粉的湿基含水量能够有效减小研磨过程中硫磺粉所带的静电量,当湿基含水量为0.8%时,研磨硫磺粉的饱和静电量几乎减小为0。

关键词：硫磺荷质比研磨材质湿基含水量

基于主客体竞争模式的凝血酶适配体传感器的研究

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分析化学 2017年第10期45卷 1421-1426页

作者：姚雪莲陈查丹张晶崔汉峰林艳洪年何玲玲孔德荣樊浩程林江西中医药大学药学院

基于β-环糊精（β-CD）主客体竞争模式,构建了开关型凝血酶适配体电化学传感器。将末端修饰了二茂铁（Fc）的核酸适配体通过与β-CD的主客体识别固定在金电极表面,当凝血酶存在时,适配体由原来的直立线状构型变为"G-四链体",远离电极表... 详细信息

基于β-环糊精（β-CD）主客体竞争模式,构建了开关型凝血酶适配体电化学传感器。将末端修饰了二茂铁（Fc）的核酸适配体通过与β-CD的主客体识别固定在金电极表面,当凝血酶存在时,适配体由原来的直立线状构型变为"G-四链体",远离电极表面,适配体探针的氧化还原电流强度减小,即"Signal-off"。利用此效应对凝血酶进行了灵敏检测,结果表明,在5.0×10;.0×10;mol/L浓度范围内,凝血酶的浓度与电化学响应信号呈良好的线性关系,检出限为2.0×10;mol/L（3σ）。与其它蛋白分子相比,本方法对凝血酶蛋白的检测具有高特异性。本传感器构建简单,再生性好,为生物血清样本中凝血酶的实时高效检测提供了方法。

关键词： β-环糊精主客体识别适配体凝血酶竞争

Fabrication and electrochemical properties of 3D nano-network LiFePO4@multiwalled carbon nanotube composite using risedronic acid as the phosphorus source

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Progress in Natural Science:Materials International 2019年第2期29卷 156-162页

作者： Liping He Wenke zha Dachuan chen State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body and College of Mechanical & Vehicle Engineering Hunan University College of Civil Engineering Hunan University

LiFePO4@multiwalled carbon nanotubes(LFP@MWCNTs) nanocomposite has been fabricated using risedronic acid(RDA) as a new eco-friendly phosphorus source. Microscopic, spectroscopic, and electrochemical characterization demonstrate that the MWCNTs are in the form of coiled and cross-linking nanoribbon, which wrapped and encrusted around LiFePO4particles to form a three-dimensional(3D) nano-network *** microstructure of 3D nano-network is obtained due to the reactions between RDA’s special functional groups with Fe2+and C-OH,-C=O or-COOH on the surface of the functionalized MWCNTs. The results also show that the particle size of the fabricated LiFePO4@MWCNTs composite is below 300 nm with the pure crystal of olivine. This nanocomposite indicates an enhanced reversible capacity of 162.2 mAh g-1at 0.2C, and high capacity retention of 76.5% even at 10C after the 800 th cycles. The electric conductivity and Li+diffusion coefficient(DLi+) of the LiFePO4@MWCNTs are 3.79 × 10-2S cm-1and 4.46 × 10-11cm2s-1, *** improved electrochemical parameters can be attributed to the nano-sized effect of particles, MWCNTs’ wrapping effect and 3D nano-network microstructure of the LFP@MWCNTs resulted from using RDA as a new phosphorus source.

关键词： Risedronic acid 3D nano-network Electrochemical properties LiFePO4@multiwalled nanotube Lithium-ion battery