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Sulfur dioxide sensing properties of MOF-derived ZnFe_(2)O_(4) functionalized with reduced graphene oxide at room temperature

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Rare Metals 2021年第6期40卷 1604-1613页

作者： Lan-Juan Zhou Xi-Xi Zhang wen-yuan Zhang College of Control Science and Engineering China University of Petroleum(East China)Qingdao 266580China United Microelectronics Center Chongqing 401332China

In this paper,ZnZnFe_(2)O_(4) nanorods were prepared using Zn/Fe metal organic framework(MOF)as precursors,and ZnZnFe_(2)O_(4)/reduced graphene oxide(rGO)was prepared by hydrothermal *** morphology and composition of the ZnZnFe_(2)O_(4)/rGO nanocomposite were characterized,and the results showed that the MOF-derived ZnZnFe_(2)O_(4) nanorods are uniformly modified on the surface of *** ZnZnFe_(2)O_(4)/rGO nanocomposite exhibits better SO_(2) gas sensing performance than the single ZnZnFe_(2)O_(4) nanorods at room *** sensing characteristics of single ZnZnFe_(2)O_(4) film sensor,single rGO film sensor and ZnZnFe_(2)O_(4)/rGO composite film sensor at SO_(2)gas concentration(1×10^(-6)-100×10^(-6))were *** response of ZnZnFe_(2)O_(4)/rGO composite sensor can reach 18.32%at room *** with single ZnZnFe_(2)O_(4) and rGO film sensors,the ZnZnFe_(2)O_(4)/rGO composite sensor has better transient response,good sensitivity and *** this work,the improvement of the sensor performance is not only due to the p-n heterostructure between ZnZnFe_(2)O_(4) nanorods and rGO nanosheets,but also to the excellent electrical properties of *** provides a new idea for the detection of SO_(2) at room temperature.

关键词： Ternary metal oxide ZnFe_(2)O_(4)nanorods Reduced graphene oxide SO_(2)gas sensor

Preparation of a New Type of Multiqubit Entangled States in Cavity QED

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Communications in Theoretical Physics 2008年第9期50卷 738-740页

作者： XIONG wen-yuan WANG Xin-wen XIA Li-Xin Department of Electronic Engineering and Physics Hunan University of Science and Engineering Yongzhou 425100 China Department of Physics Beijing Normal University Beijing 100875 China Department of Physics Tsinghua University Beijing 100084 China

Recently Yang,Chu,and Han [***.A 70 (2004) 022329] presented a new type of multipartiteentangled states for implementing efficient many-party controlled teleportation of multiqubit quantum *** propose a simple scheme for preparing such a type of multi-atom entangled states in cavity quantum electrodynamics(QED).The scheme involves atom-cavity interaction with large detuning,and is immune to the cavity decay and thethermal field *** practical analyses show its availability with the present technology.

关键词： new type of entangledsates cavity QED controlled quantum communication

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大数据背景下警犬技术的困境与变革

广西警察学院学报 2024年第1期37卷 38-47页

作者：李文渊王琦刘帅中国刑事警察学院辽宁沈阳110034

大数据不仅能够与警犬技术相融合,还有助于解决当前警犬技术所面临的法庭评判中的标准化问题,激发警犬技术这项传统公安技术新的生命力。大数据的预测性功能可以提升警犬的使用效率,全景记录功能可以为警犬使用提供数据支撑。大数据背景... 详细信息

大数据不仅能够与警犬技术相融合,还有助于解决当前警犬技术所面临的法庭评判中的标准化问题,激发警犬技术这项传统公安技术新的生命力。大数据的预测性功能可以提升警犬的使用效率,全景记录功能可以为警犬使用提供数据支撑。大数据背景下,警犬技术应用面临着警犬使用结果可信度存疑、传统个人经验主义盛行和复合型人才缺失的困境,与此同时,警犬使用理念、评判标准、工作重心和使用方式均发生了变化。在警犬技术积极变革的同时,要谨防数据失真对警犬使用可信度带来的负面影响。

关键词：大数据警犬技术警犬使用数据分析

阻尼器布置方式对平台式连体不规则结构减震影响研究

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工程抗震与加固改造 2024年第2期46卷 24-32,67页

作者：王鑫李慧峰戴必辉都来盼廖文远文乾鑫西南林业大学土木工程学院云南昆明650224 辽宁工程技术大学土木工程学院辽宁阜新123000

为研究阻尼器布置方式对不规则建筑结构耗能减震的影响,设置3种不同阻尼器布置方案,以8度区(0.2g)18层平台式连体结构建筑为研究对象,采用数值模拟的方法,使用PKPM进行结构设计,使用Etabs进行补充复核及地震作用下的时程分析,并将3种阻... 详细信息

为研究阻尼器布置方式对不规则建筑结构耗能减震的影响,设置3种不同阻尼器布置方案,以8度区(0.2g)18层平台式连体结构建筑为研究对象,采用数值模拟的方法,使用PKPM进行结构设计,使用Etabs进行补充复核及地震作用下的时程分析,并将3种阻尼器布置方案下的减震结构与非减震结构的地震反应进行对比分析。结果表明,采用耗能减震设计之后,结构在地震作用下层间位移角及基底剪力等均有着明显的减小。阻尼器分散布置时,对结构层间位移角控制较好,可以提供较大的附加阻尼比,能量耗散多;当阻尼器采取集中布置时对结构的基底剪力控制较好。以层间位移角为控制目标首选分散布置方案,以基底剪力为控制目标时首选集中布置方案。

关键词：耗能减震时程分析黏滞阻尼器附加阻尼比

Binding Energy of D^- and D^0 Centers Confined by Spherical Quantum Dots

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Communications in Theoretical Physics 2008年第12期50卷 1449-1452页

作者： BAO yuan-Peng XIE wen-Fang School of Physics and Electronic Engineering Guangzhou University Guangzhou 510006 China

We study a negative donor center, a neutral donor in a spherical Gaussian potential quantum dot by using the matrix diagonalization of Hamiltonian within the effective-mass approximation. We calculate the energy E（ D^-） as functions of Gaussian potential size and depth, the same calculations as performed with the parabolic approximation. The dependence of the ground state of the neutral shallow donor and the negatively charged donor on the dot size and the potential depth is investigated.

关键词： donor center quantum dots Gaussian potential

Roll Flattening Analytical Model in Flat Rolling by Boundary Integral Equation Method

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Journal of Iron and Steel Research International 2013年第10期20卷 39-45页

作者： XIAO Hong yuan Zheng-wen WANG Tao National Engineering Research Center for Equipment and Technology of Cold Strip Rolling Yanshan University College of Mechanical Engineering Yanshan University

In order to improve rolled strip quality, precise plate shape control theory should be established. Roll flat- tening theory is an important part of the plate shape theory. To improve the accuracy of roll flattening calculation based on semi infinite body model, especially near the two roll barrel edges, a new and more accurate roll flattening model is proposed. Based on boundary integral equation method, an analytical model for solving a finite length semi infinite body is established. The lateral surface displacement field of the finite length semi-infinite body is simulated by finite element method （FEM） and lateral surface displacement decay functions are established. Based on the boundary integral equation method, the numerical solution of the finite length semi-infinite body under the distribu ted force is obtained and an accurate roll flattening model is established. Different from the traditional semi-infinite body model, the matrix form of the new roll flattening model is established through the mathematical derivation. The result from the new model is more consistent with that by FEM especially near the edges.

关键词： roll flattening analytical model finite length semi-infinite body boundary integral equation method fi- nite element method

近场爆炸荷载作用下装配式钢筋混凝土叠合梁动力响应数值分析

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吉林建筑大学学报 2024年第1期41卷 9-16页

作者：段文峰陈国庆刘文渊吉林建筑大学土木工程学院长春130118 苏州科技大学土木工程学院江苏苏州225300

为研究装配式钢筋混凝土叠合梁的抗爆性能,采用显式动力有限元软件LS-DYNA建立了相应的数值模型,通过已有的钢筋混凝土现浇梁爆炸试验研究对数值模型进行了验证。采用验证了的数值模型对爆炸荷载作用下的叠合梁和现浇梁进行动力响应分析... 详细信息

为研究装配式钢筋混凝土叠合梁的抗爆性能,采用显式动力有限元软件LS-DYNA建立了相应的数值模型,通过已有的钢筋混凝土现浇梁爆炸试验研究对数值模型进行了验证。采用验证了的数值模型对爆炸荷载作用下的叠合梁和现浇梁进行动力响应分析,考虑比例距离、炸药量、浇筑方式等参数变化对装配式钢筋混凝土叠合梁动力响应及抗爆性能的影响。结果表明:随比例距离减小或炸药量增大,梁破坏形态由弯曲破坏向弯剪破坏转变,梁位移响应加剧;叠合梁抗爆性能略低于现浇梁,但尚能满足规范要求。

关键词：数值分析抗爆性能预制钢筋混凝土叠合梁近场爆炸破坏模式

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农村固体废弃物的资源化处理方法及措施

黑龙江环境通报 2024年第9期37卷 120-122页

作者：文源姜宁宁李喆中城院(北京)环境科技股份有限公司北京100120

当前,国家积极开展乡村振兴,重视“三农”问题,在这一背景下,需加强对农村固体废弃物的处理。目前,农村对各项资源的利用率比较低,需对资源进行有效的开发和利用,重视对固体废弃物的回收与处理,保证其得到充分利用。本文分析了农村固体... 详细信息

当前,国家积极开展乡村振兴,重视“三农”问题,在这一背景下,需加强对农村固体废弃物的处理。目前,农村对各项资源的利用率比较低,需对资源进行有效的开发和利用,重视对固体废弃物的回收与处理,保证其得到充分利用。本文分析了农村固体废弃物组成与特征,探讨了农村固体废弃物资源化处理技术,并阐述了资源化处理的具体方法。旨在满足农村生产与生活需求,提高农村经济效益、社会效益与环境效益。

关键词：农村固体废弃物资源化处理

Inflammatory caspase-related pyroptosis:mechanism,regulation and therapeutic potential for inflammatory bowel disease

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Gastroenterology Report 2018年第3期6卷 167-176,I0001页

作者： yuan-yuan yuan Ke-Xin Xie Sha-Long Wang Lian-wen yuan Department of Geriatric Surgery The Second Xiangya Hospital of Central South UniversityChangshaHunan 410011China Medical Laboratory Technology 1602 Central South University Xiangya School of Medicine172 Tongzipo RoadYueLu DistrictChangshaHunan 410011China

As an essential part of programmed cell death,pyroptosis is an inflammatory response that is elicited upon infection by intracellular *** diseases,atherosclerosis and vital organ damage occur if pyroptosis is *** are the main cells that induce pyroptosis with the help of intracellular pattern-recognition receptors stimulated by danger signals and pathogenicmicroorganisms in the cytosol of host *** inflammatory caspases induce pyroptosis and produce pro-inflammatory cytokines,such as interleukin-1b and *** programmed cell death is classified as canonical or non-canonical based on inflammatory caspases,which includes caspase-1(in human andmouse)and caspase-11(inmouse)or caspase-4 and-5(in humans).Activated inflammatory caspases cleave the pore-forming effector protein,gasdermin-D,inducing osmotic pressure deregulation of internal fluids and subsequently rupturing the cell *** caspases could be attractive therapeutic targets for inflammatory bowel disease(IBD)in which pyroptosismay play an important *** article reviews the current understanding of the mechanismof pyroptosis,focusing on the regulation of inflammatory caspases and therapeutic strategies for IBD.

关键词： Pyroptosis gasdermin-D inflammasome caspase inflammatory bowel disease