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Chemical Research in Chinese Universities 2024年第1期40卷 109-118页

作者： ZHANG Wanjia GUO Tingyu LIU Yanhua ZHANG Xuewei ZOU Bo ZHAO Chun suo hui WANG hui ZHAO Xu College of Chemistry Jilin UniversityChangchun130012P.R.China State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun130012P.R.China Department of Chemical and Biological Engineering University of SaskatchewanSaskatoonSKS7N 5A9Canada

A composite material comprising a carbon layer and spherical carbon/carbon cloth(C-SC/CC)was fabricated using a hydrothermal-pyrolysis method,employing carbon cloth as the substrate and glucose as the carbon *** C-SC/CC electrode was evaluated as an electrocatalytic electrode for hydrogen production by electrolysis of Bunsen reaction *** electrode prepared with 4 g of glucose and annealed at 800°C showed excellent electrocatalytic *** requires only a potential of 185 mV(***)to achieve a current density of 10 mA/***,the electrode demonstrated good stability with a 6%loss in current density after 1000 cycles of scanning from 0.2 V to 1.2 *** results indicate the potential of the SC/CC electrode as an efficient and durable electrocatalyst for the electrolysis of H2SO4 and HI.

关键词： Electrolysis of Bunsen reaction product Carbon material Composite material Hydrogen production

Experiment and simulation of launching process of a small-diameter steel cartridge case

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Defence Technology（防务技术） 2014年第4期10卷 349-353页

作者： Han-dong ZHAO Jia-qing XIE Zhi-peng LI hui-suo ZHANG North University of China

In order to explore the rules of the deformation force during the launching of a small-diameter steel cartridge, the semi-closed bomb test method is used to test the greatest strains on chamber outer wall under the different chamber pressures. The pressure curves of cartridge chamber are measured in experiment, and the tensile test data of cartridge are loaded into the numerical calculation to compare with the experimental data. The conclusion was obtained that the calculated results match better with the experimental results by considering strain rate bilinear kinematic hardening material constitutive model. The forces on the various parts of the cartridge during launching and their deformation rules are achieved, in which the equivalent plastic strain decreases and the cylinder ring withstands the maximum equivalent stress when the cartridge case clings to the bore from the mouth to the bottom.

关键词：实验数据发射过程小直径钢盘模拟等效塑性应变压力曲线试验方法

Investigation of Cold Rolling Texture and Recrystallization Texture in NiW Substrates

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稀有金属材料与工程 2011年第S3期40卷 329-333页

作者： Tian hui, suo Hongli, Qiu Huoqin, Liu Min, Ma Lin, Wang Limin, Yuan Dongmei, Wang Yingxia Beijing University of Technology, Beijing 100124, China Beijing Univ Technol Coll Mat Sci & Engn Beijing 100124 Peoples R China

NiW alloys were fabricated by cold isostatic pressing, the W content being 5, 7 and 9.3 at%, respectively. The NiW substrates were obtained by rolling assisted biaxially texturing. The cold rolling and recrystallization textures of NiW substrates were systematically studied by X-ray and EBSD, which revealed a variation of rolling texture in NiW substrates with increasing W content, which also influenced the copper (C) type and brass (B) type texture, as well as the transition between them. In addition, the recrystallization texture was influenced by the cold rolling texture. The main observations are: (1) Deformation twinning and orientation banding attributed to the cross slip and it is strongly related to the stacking fault energy which has a decisive effect on the texture transition from C to B type texture in NiW substrates with the W content increase. (2) The recrystallization cube texture is strongly related to the rolling texture. The C type texture was obtained in Ni5W substrates with 99% reduction, and was beneficial for the formation of the cube texture after recrystallization. The B type texture was obtained in Ni9W substrates with 99% reduction, and it was hard to obtain the cube texture, where a large number of annealing twins were formed during recrystallization process, leading to the formation of rotating cube texture, and thereby affecting the formation of sharp cube texture in Ni9W substrate.

关键词： NiW alloy cold rolling texture C type texture B type texture recrystallization texture

Geochemistry and detrital zircon records of the Ruyang-Luoyu groups,southern North China Craton:Provenance,crustal evolution and Paleo-Mesoproterozoic tectonic implications

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Geoscience Frontiers 2020年第2期11卷 679-696页

作者： Xi-Yao Li Sanzhong Li Tong-Shan Wang Yunpeng Dong Xiao-Guang Liu Shu-Juan Zhao Kun Wang Jiao-Peng Sun Li-Ming Dai Yan-hui suo Key Lab of Submarine Geosciences and Prospecting Techniques MOEand Institute for Advanced Ocean StudyCollege of Marine GeosciencesOcean University of ChinaQingdao 266100China State Key Laboratory of Continental Dynamics Northwest UniversityXi’an 710069China Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China Research Institute of Petroleum Exploration and Development PetroChinaBeijing 100083China

Paleo-to Mesoproterozoic sedimentary rocks in the southern margin of the North China Craton(NCC)are represented by the Ruyang and Luoyu *** studied the sedimentary rocks from the Yunmengshan and Beidajian formations of the Ruyang Group and the Cuizhuang and Sanjiaotang formations of the Luoyu *** zircon grains from these formations have U–Pb age populations of 3.64–3.31 Ga,2.96–2.86 Ga,2.72–2.59 Ga,2.56–2.47 Ga,2.45–2.0 Ga,1.99–1.85 Ga and 1.84–1.65 *** geochemical features of the sedimentary rocks suggest that some of the sediments were sourced from intermediate to felsic magmatic *** age groups of the detrital zircon are roughly consistent with the tectono-thermal events in the southern margin of the *** Hf isotopic compositions of detrital zircon from the sedimentary rocks in Ruyang and Luoyu groups suggest that significant crustal growth and reworking of the NCC took place during the Neoarchean and early-to mid-Paleoproterozoic,while crustal reworking at the Paleoarchean and late-Paleoproterozoic,and crustal growth at the *** suggest the depositional times of the Ruyang Group and Luoyu Group are constrained to no older than 1.75–1.7 Ga and 1.7–1.65 Ga,*** of late-Paleoproterozoic basins related to the strike slip and extrusion tectonics that cross-cut the NCC during the late Paleoproterozoic(<1.75 Ga),and the late Paleoproterozoic sedimentation once isochronous developed in the southern margin of the NCC through the Taihang region of the interior NCC and linked the Yanshan–Liaoxi regions of the northern NCC.

关键词： Detrital zircon North China craton Proterozoic Tectonics U–Pb ages Hf isotope

Establishment and evaluation of a theater influenza monitoring platform

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Military Medical Research 2018年第2期5卷 111-116页

作者： Jian Wang hui-suo Yang Bing Deng Meng-Jing Shi Xiang-Da Li Qing-Gong Nian Wen-Jing Song Feng Bing Qing-Feng Li Center for Disease Prevention and Control of Beijing Military Region 66th Heishitou RoadShijingshan DistrictBeijing 100042China

Background:Influenza is an acute respiratory infectious disease with a high incidence rate in the Chinese army,which directly disturbs military training and affects soldiers’*** surveillance systems are widely used around the world and play an important role in influenza epidemic prevention and ***:As a theater centers for disease prevention and control,we established an influenza monitoring platform(IMP)in 2014 to strengthen the monitoring of influenza-like illness and influenza virus *** this study,we introduced the constitution,influenza virus detection,and quality control for an *** monitoring effect was also evaluated by comparing the monitoring data with data from national influenza surveillance *** experiences and problems associated with the platform also were ***:A theater IMP was established based on 3 levels of medical units,including monitoring sites,testing laboratories and a checking laboratory.A series of measures were taken to guarantee the quality of monitoring,such as technical training,a unified process,sufficient supervision and timely *** platform has run smoothly for 3 monitoring years to *** the 2014–2015 and 2016–2017 monitoring years,sample amount coincided with that obtained from the National Influenza Surveillance *** the 2015–2016 monitoring year,due to the strict prevention and control measures,an influenza epidemic peak was avoided in monitoring units,and the monitoring data did not coincide with that of the National Influenza Surveillance *** problems,including insufficient attention,unreasonable administrative intervention or subordination relationships,and the necessity of detection in monitoring sites were still ***:A theater IMP was established rationally and played a deserved role in the prevention and control of ***,several problems remain to be solved.

关键词： Influenza monitoring Military Establishment Evaluation

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基于云计算的信息安全防护方案研究

制造业自动化 2012年第10期34卷 113-115页

作者：所辉广东机电职业技术学院广州510515

云计算被认为是继计算机、互联网之后的"第三次IT变革",它的成功运营,很大程度上依赖于安全问题的解决。本文从云计算的概念及特征入手,介绍了云计算的安全现状,然后着重从云计算平台安全和"云"中数据安全两个方面分析了云计算的安全隐... 详细信息

云计算被认为是继计算机、互联网之后的"第三次IT变革",它的成功运营,很大程度上依赖于安全问题的解决。本文从云计算的概念及特征入手,介绍了云计算的安全现状,然后着重从云计算平台安全和"云"中数据安全两个方面分析了云计算的安全隐患,再针对云计算面临的安全隐患,提出了基于云计算的安全解决方案,从云计算服务提供商、云计算的使用者(企业用户)及云计算的监管方(国家)三个角度进行了分析和研究。

关键词：云计算云安全信息安全

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运动圆柱体水平撞水时的弯曲振动响应分析

北京理工大学学报 2012年第7期32卷 669-672页

作者：张会锁冯顺山北京理工大学爆炸科学与技术重点实验室北京100081 中北大学弹箭仿真中心山西太原030051

针对空投弹药入水冲击问题,应用结构振动学理论及相关求解方法,研究了圆柱体在水平入水时与水面发生碰撞瞬间沿长度方向受到水面冲击载荷作用时的弯曲振动响应,建立了数学模型,并利用动力学仿真软件对其入水过程进行了仿真计算.结果表... 详细信息

针对空投弹药入水冲击问题,应用结构振动学理论及相关求解方法,研究了圆柱体在水平入水时与水面发生碰撞瞬间沿长度方向受到水面冲击载荷作用时的弯曲振动响应,建立了数学模型,并利用动力学仿真软件对其入水过程进行了仿真计算.结果表明圆柱体材料弹性模量、截面积、质量和长度对其响应有很大影响,使用文中所采用的解析法可以计算运动体水平撞水瞬间的弯曲振动响应,为空投入水弹药壳体设计提供理论参考.

关键词：入水撞水冲击弯曲振动

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服役公路桥梁的时变可靠指标计算

交通运输工程学报 2006年第1期6卷 69-71页

作者：索清辉钱永久西南交通大学土木工程学院四川成都610031

为了对服役结构的可靠性进行正确评估,必须考虑时间变化的影响,将结构服役时间离散为若干个时间点,利用各个时间点上随机的结构抗力和荷载效应,给出服役结构时变可靠指标简化计算公式,分析抗力衰减模式、可变荷载增加大趋势以及服役时... 详细信息

为了对服役结构的可靠性进行正确评估,必须考虑时间变化的影响,将结构服役时间离散为若干个时间点,利用各个时间点上随机的结构抗力和荷载效应,给出服役结构时变可靠指标简化计算公式,分析抗力衰减模式、可变荷载增加大趋势以及服役时间对可靠指标的影响。分析结果表明:在结构抗力和荷载效应保持不变情况下,随着服役时间的增长,结构的可靠指标降低,结构可靠指标的变化规律因抗力衰减模式和荷载增大趋势的不同而有差异。

关键词：桥梁工程抗力衰减时变可靠指标评估

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工程结构时变失效概率分析

中国铁道科学 2005年第2期26卷 69-72页

作者：索清辉钱永久段敬民西南交通大学土木工程学院四川成都610031

用泊松脉冲随机过程模拟机车车辆荷载,考虑抗力随时间的变化,给出工程结构时变失效概率的计算公式。定性分析抗力衰减函数、荷载平均发生率和结构服役时间对失效概率的影响。结果表明,在其他因素确定的情况下,荷载发生频率的增大、结构... 详细信息

用泊松脉冲随机过程模拟机车车辆荷载,考虑抗力随时间的变化,给出工程结构时变失效概率的计算公式。定性分析抗力衰减函数、荷载平均发生率和结构服役时间对失效概率的影响。结果表明,在其他因素确定的情况下,荷载发生频率的增大、结构服役时间的延长及抗力的衰减均会导致失效概率增加,其中抗力衰减引起结构失效概率的增加更明显。因此在服役过程中需对结构进行定期的检测维修,以确保其可靠性。

关键词：结构时变失效可靠度失效概率

AIM改性剂增韧PC及增韧PC的物理老化行为

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高分子材料科学与工程 2007年第2期23卷 137-140页

作者：谭志勇索延辉韩莹张会轩中国科学院长春应用化学研究所中国石油吉林石化公司吉林吉林132021 长春工业大学化学工程学院吉林长春130012

用商品AIM改性剂(丙烯酸酯类冲击改性剂)与聚碳酸酯进行共混,考察了AIM改性剂用量对聚碳酸酯的冲击性能及拉伸行为的影响,发现含有4%AIM改性剂的共混物的冲击强度出现最大值。共混物的屈服强度、模量及屈服应力降随改性剂用量的增加而... 详细信息

用商品AIM改性剂(丙烯酸酯类冲击改性剂)与聚碳酸酯进行共混,考察了AIM改性剂用量对聚碳酸酯的冲击性能及拉伸行为的影响,发现含有4%AIM改性剂的共混物的冲击强度出现最大值。共混物的屈服强度、模量及屈服应力降随改性剂用量的增加而减小。选取AIM改性剂含量为4%的共混物样条于130℃的鼓风烘箱中进行物理老化,考察了物理老化时间对PC/AIM共混物性能的影响。发现随老化时间的延长,共混物的冲击强度降低,屈服强度和屈服应力降提高。同时也考察了老化时间对共混物拉伸行为的影响。

关键词：聚碳酸酯 AIM改性剂物理老化力学性能拉伸行为