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Mode Conversion and Diffraction of Guided Optical Waves from Magnetostatic Waves under Inclined Bias Magnetic Field

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Communications in Theoretical Physics 2001年第10期36卷 497-502页

作者： WU Bao-Jian LIU Gong-qiang ZOU Zhi-qiang Department of Applied Physics Shanghai Jiao Tong University Shanghai 200030 China Department of Applied Physics Shanghai Jiao Tong University Shanghai 200030 China Department of Applied Physics Shanghai Jiao Tong University Shanghai 200030 China

The noncollinear interaction of guided optical waves with magnetostatic waves under inclined bias magnetic field is theoretically studied in detail. Similar approach can also be applied to the collinear interaction. Calculation results indicate that the diffraction efficiency (DE) in magnitude is equal to the mode-conversion efficiency (MCE) under vertical bias magnetic field, but they differ greatly under inclined bias magnetic field. By comparison to the case of vertical magnetization, the DE or the MCE can be greatly increased under inclined magnetic field. The characteristic of the DE curves obtained is basically in agreement with the experimental result.

关键词： guided optical wave, magnetostatic wave, mode conversion, diffraction efficiency

地方高校资源循环科学与工程专业实践教学环节改革研究

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化学教育（中英文） 2024年第20期45卷 24-28页

作者：刘璇范新会曹宝月周春生刘明宝孙强强商洛学院化学工程与现代材料学院陕西商洛726000

实践教学环节是工科专业提升学生综合素质的有效手段,也是地方高校实现产教融合的重要途径。如何保障和提高实践教学质量并与地方产业深度融合是地方高校的根本任务。深入剖析了商洛学院资源循环科学与工程专业实践教学环节存在的“四... 详细信息

实践教学环节是工科专业提升学生综合素质的有效手段,也是地方高校实现产教融合的重要途径。如何保障和提高实践教学质量并与地方产业深度融合是地方高校的根本任务。深入剖析了商洛学院资源循环科学与工程专业实践教学环节存在的“四难”问题,通过优化整合校内实践教学资源、合作建设校外实践教学基地、合力打造实践育人课程体系、扎实推进“实习-就业一体化”以全面推动实践教学改革。提高了应用型人才的培养质量,促进了地方经济的持续发展,展现了地方高校和地方产业相关专业存在的重要价值。

关键词：地方高校资源循环科学与工程专业实践教学环节

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蚕茧形大跨度煤棚钢结构施工技术

建筑技术 2024年第6期55卷 646-649页

作者：贺晓东王晓东张强强国能(绥中)发电有限责任公司辽宁葫芦岛125222 宝钢工程建设有限公司上海201900 华北科技学院建筑工程学院河北廊坊065201

华润某电厂为双条形空间网架结构,结合现场施工条件及工期限制,经多种网架拼装方案的对比,择优采用“对称分块拼装高空散装”的施工工艺。考虑到双条形平行网架对风荷载比较敏感,采用有限元软件Fluent分析了不同风向角下煤棚结构表面的... 详细信息

华润某电厂为双条形空间网架结构,结合现场施工条件及工期限制,经多种网架拼装方案的对比,择优采用“对称分块拼装高空散装”的施工工艺。考虑到双条形平行网架对风荷载比较敏感,采用有限元软件Fluent分析了不同风向角下煤棚结构表面的风荷载体型系数。经CFD分析得到:半球与弧线屋盖交界处附近体型系数约为–0.6,通风天窗顶部体型系数取–1.5。考虑到蚕茧形网架结构施工复杂,采用3D3S软件对空间网架的拼装过程进行杆件内力验算,计算结果显示,结构应力及位移均在设计值范围内,构件杆件的超应力杆数和超长细比杆数均为零,具有富足的施工安全储备。

关键词：钢结构网架结构高空散拼风荷载体型系数数值模拟

Elevation change around Dome A region of Antarctica from EnviSat satellite radar altimetry during 2002–2012

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Geo-Spatial Information Science 2015年第4期18卷 193-199页

作者： qiang qiang Chunxia ZHOU Mingsheng LIAO Qiuyang ZHAO Zemin WANG Chinese Antarctic Center of Surveying and Mapping Wuhan UniversityWuhan 430079China Key Laboratory of Polar Surveying and Mapping National Administration of SurveyingMapping and GeoinformationWuhan UniversityWuhan 430079China State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan UniversityWuhan 430079China

The expected responses of ice sheets to climate warming are growth in the thickness of the inland ice areas and thinning near the *** recent decades,researchers have identified glacier acceleration along Antarctic ice sheet coastal ***,the study of ice sheet interiors where seasonal accumulation eventually balances ice wastage at the lower elevation is poorly *** this paper,the ice sheet elevation change around Dome A region is analyzed from 2002 to 2012 using two million elevation change measurements from EnviSat satellite radar altimeter data covering an area of about 7000 km2.A declining trend of 0.572±1.31 mm/year which means that the Dome A region was in balance during the last decade can be *** addition,two obvious changes in accumulation which divide elevation change time series into three independent equilibration stages are also *** order to explain this phenomenon,two speculations related to snowfall and firn compaction are proposed in this paper.

关键词： elevation change satellite radar altimetry Dome A Antarctica

Effect of Oxygen on Microstructure Evolution and Glass Formation of Zr-based Metallic Glasses

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Journal of Iron and Steel Research International 2016年第1期23卷 78-82页

作者： Jia-lin CHENG Guang CHEN qiang-qiang ZENG Lu YUN Feng XU Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology Nanjing 211167 JiangsuChina School of Materials Science and Engineering Nanjing Institute of Technology Nanjing 211167 JiangsuChina Engineering Research Center of Materials Behavior and Design Ministry of Education Nanjing Universily of Science and Technology Nanjing 210094 Jiangsu China

The effect of oxygen on the microstructure evolution and glass formation of Zr-based bulk metallic glasses（BMGs）was studied in *** was found that oxygen did not form oxides or dissolve in glass matrix,but induced the precipitation ofα-Zr which has the high affinity and solubility of oxygen in the Zr-based bulk metallic glass（ZrBMG）.With the precipitation ofα-Zr,the remaining melts contain much lower oxygen content and have strong glass formation,resulting in the formation ofα-Zr/BMG *** findings provide an important insight into the mechanism of the oxygen on glass formation,and give us a useful guideline to avoid the oxygen detrimental for designing new BMGs.

关键词： amorphous material rapid solidification quenching microstructure

Shaped charge penetration into high-and ultrahigh-strength Steel-Fiber reactive powder concrete targets

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Defence Technology（防务技术） 2020年第1期16卷 217-224页

作者： qiang-qiang Xiao Zheng-xiang Huang Xudong Zu Xin Jia Qi-feng Zhu Wei Cai School of Mechanical Engineering Nanjing University of Science and TechnologyXiaolingwei 200Nanjing210094China China South Industries Group Corporation Chongqing400039China

Experiments on shaped charge penetration into high and ultrahigh strength steel-fiber reactive powder concrete(RPC) targets were performed in this *** show that the variation of penetration depth and crater diameter with concrete strength is different from that of shaped charge penetration into normal strength concrete(NSC).The crater diameter of RPC is smaller than that of NSC penetrated by the shaped *** jet particles are strongly disturbed and hardly reach the crater bottom because they pass through the narrow channel formed by jet penetration into the *** effects of radial drift velocity and gap effects of jet particles for a shaped charge penetration into RFC target are ***,a theoretical model is presented to describe the penetration of shaped charge into RPC *** the concrete strength increases,the penetration resistance increases and the entrance crater diameter *** the drift velocity and narrow crater channel,the low-velocity jet particles can hardly reach the crater bottom to increase the penetration ***,the narrow channel has a stronger interference to the jet particles with increasing concrete strength;hence,the gap effects must be *** drift velocity and gap effects,which are the same as penetration resistance,also have significant effects during the process of shaped charge penetration into ultrahigh-strength concrete,The crater profiles are calculated through a theoretical model,and the results are in good agreement with the experiments.

关键词： Shaped charge Reactive powder concrete target Penetration Radial drift velocity Gap effects

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水泥加固淤泥土力学与抗海水腐蚀性能研究

化学工程师 2024年第2期38卷 78-82页

作者：阴琪翔侯明姣程强强张梦钵江苏建筑职业技术学院建筑建造学院江苏徐州221116

为了分析水泥掺量和海水腐蚀对水泥加固淤泥土力学性能的影响规律,制备了水泥掺量为4%、8%、12%、16%和20%水泥加固淤泥土试件,分别经历了0、2、5、8、12、18次海水腐蚀干湿循环后,测试试件的单轴抗压强度、内聚力和内摩擦角,分析水泥... 详细信息

为了分析水泥掺量和海水腐蚀对水泥加固淤泥土力学性能的影响规律,制备了水泥掺量为4%、8%、12%、16%和20%水泥加固淤泥土试件,分别经历了0、2、5、8、12、18次海水腐蚀干湿循环后,测试试件的单轴抗压强度、内聚力和内摩擦角,分析水泥掺量和海水腐蚀对水泥加固淤泥土力学性能的影响规律。研究结果表明,(1)随着水泥掺量的增大,水泥加固淤泥土的单轴抗压强度和内聚力呈线性增大,而内摩擦角呈指数衰减;(2)随着海水干湿循环次数的增加,水泥加固淤泥土的抗压强度、内聚力和内摩擦角均呈现不断变小的变化规律;(3)水泥掺量的增大能够有效提高加固淤泥土的抗海水腐蚀能力。

关键词：水泥加固淤泥土干湿循环力学特性抗海水腐蚀性能

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高渗透介质微泄漏阀门中腔密封研究

阀门 2024年第2期 162-168页

作者：汤晓刚杨强强王锐蒋勇刘平覃捷中核苏阀科技实业股份有限公司江苏苏州215151 华能核能技术研究院有限公司上海201200 华能山东石岛湾核电有限公司山东威海264309

阐述了随着核电技术的发展,对核电阀门要求越来越高的现状,比如高温气冷堆等四代核电堆型一回路冷却剂(氦气)的特殊性,对核电阀门的密封性能提出了更高的要求。介绍了研究高温气冷堆核级氦气截止阀低泄漏率中腔密封结构的意义,并通过研... 详细信息

阐述了随着核电技术的发展,对核电阀门要求越来越高的现状,比如高温气冷堆等四代核电堆型一回路冷却剂(氦气)的特殊性,对核电阀门的密封性能提出了更高的要求。介绍了研究高温气冷堆核级氦气截止阀低泄漏率中腔密封结构的意义,并通过研究分析确定了低泄漏率中腔密封结构的研制难点和对应的解决措施,并对一台DN100截止阀样件开展中腔密封结构的详细设计,完成了满足低泄漏率要求中腔密封结构的开发,同时为了确保其密封性能能够满足要求,对样件中腔密封结构中的金属C型圈所承受载荷进行有限元分析,验证了其所承受的线载荷能够使其起到良好的密封效果,并对样件进行一系列的氦检漏试验,证明了该中腔密封结构具有良好的密封性能。通过本课题的研究,掌握了核级氦气截止阀满足低泄漏率要求的中腔密封结构关键技术,解决了氦气等高渗透性介质工况阀门中腔密封结构密封性能保证的难题,可以为高温气冷堆核级氦气截止阀等具有低漏率要求阀门的中腔密封结构的设计提供借鉴。

关键词：氦气工况微泄漏截止阀中腔密封结构

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滨州市河湖管理工作实践与发展对策思考

海河水利 2024年第5期 46-49页

作者：孟令文王惠敏杨强强张宝军滨州市城乡水务发展服务中心山东滨州256600 滨州市引黄灌溉服务中心山东滨州256600

滨州位于濒临渤海的鲁北平原区,河湖防洪任务重。通过调研滨州河湖管理现况,分析河湖管理存在问题,提出明确涉河建设项目监管工作流程、制定河湖岸线保护管理办法、建设智慧河湖、严格涉河建设项目审批后续监管工作等提升滨州河湖管理... 详细信息

滨州位于濒临渤海的鲁北平原区,河湖防洪任务重。通过调研滨州河湖管理现况,分析河湖管理存在问题,提出明确涉河建设项目监管工作流程、制定河湖岸线保护管理办法、建设智慧河湖、严格涉河建设项目审批后续监管工作等提升滨州河湖管理工作的发展对策。

关键词：滨州河湖管理发展对策