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层板销合木的界面滑移与木梁受弯性能

同济大学学报（自然科学版） 2024年第5期52卷 664-675页

作者：杨会峰张聪聪顾日鑫陶昊天史本凯南京工业大学土木工程学院江苏南京211816 江苏省泰州市海陵区住房与城乡建设局江苏泰州225300 东南大学土木工程学院江苏南京211189

层板销合木(简称销合木)是一种由规格材通过销组合而成的新型结构用木材,与胶合木相比具有加工快捷、成本低且更加绿色环保等优点。为研究销合木梁的弯曲性能,设计了8组木梁的四点弯试验,试验参数包括销的种类(木销和竹销)、销间距(70、... 详细信息

层板销合木(简称销合木)是一种由规格材通过销组合而成的新型结构用木材,与胶合木相比具有加工快捷、成本低且更加绿色环保等优点。为研究销合木梁的弯曲性能,设计了8组木梁的四点弯试验,试验参数包括销的种类(木销和竹销)、销间距(70、100和140 mm)和层板的数量(3、4和6层)。此外,为揭示层积材界面销连接抗剪性能对销合木梁受弯性能的贡献,开展了木销和竹销连接销合木推出试验研究。研究结果表明:与木销连接相比,竹销连接的抗滑移刚度更高且延性更好;销合木梁的受弯性能介于无销接叠合木梁和胶合木梁之间,其组合效率为0.11~0.15;随层板数量的增加,梁截面的增高使销合木梁的抗弯性能显著上升;减小销间距对销合木梁的抗弯承载力与刚度均有一定的提升作用。采用欧洲规范5中的γ法预测销合木梁的抗弯刚度时结果偏大,因此认为对销合木梁的抗弯刚度进行计算时须对销连接的滑移刚度进行折减。

关键词：销合木界面滑移弯曲性能销连接 γ系数法

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一种电控液压转向系统的设计

装备机械 2024年第2期 79-82页

作者：李杰张丛丛徐州重型机械有限公司江苏徐州221004 事坦登(徐州)有限公司江苏徐州221004

设计了一种电控液压转向系统,可应用于卡车、工程机械车辆等。介绍了电控液压转向系统的结构,给出了原理,并进行了性能影响分析。应用这一系统,车辆在低速行驶时转向轻便、灵活,在高速行驶时转向阻力增大,可以防止路面冲击和驾驶员误操... 详细信息

设计了一种电控液压转向系统,可应用于卡车、工程机械车辆等。介绍了电控液压转向系统的结构,给出了原理,并进行了性能影响分析。应用这一系统,车辆在低速行驶时转向轻便、灵活,在高速行驶时转向阻力增大,可以防止路面冲击和驾驶员误操作造成的失稳。这一系统结构简单,质量轻,安全性能高。

关键词：电控液压转向设计

The Jiao Tong University Spectroscopic Telescope Project

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Astronomical Techniques and Instruments 2024年第1期1卷 16-30页

作者： JUST Team Chengze Liu Ying Zu Fabo Feng Zhaoyu Li Yu Yu Hua Bai Xiangqun Cui Bozhong Gu Yizhou Gu Jiaxin Han Yonghui Hou Zhongwen Hu Hangxin Ji Yipeng Jing Wei Li Zhaoxiang Qi Xianyu Tan Cairang Tian Dehua Yang Xiangyan Yuan Chao Zhai congcong zhang Jun zhang Haotong zhang Pengjie zhang Yong zhang Yi Zhao Xianzhong Zheng Qingfeng Zhu Xiaohu Yang Tsung-Dao Lee Institute Shanghai Jiao Tong UniversityShanghai 200240China Department of Astronomy School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Nanjing Institute of Astronomical Optics&Technology Chinese Academy of SciencesNanjing 210042China University of Chinese Academy of Sciences NanjingNanjing 211135China University of Chinese Academy of Sciences Beijing 101408China Lenghu Technology Innovation Industrial Park Management Committee Lenghu 817400China Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030China Department of Astronomy University of Science and Technology of ChinaHefei 230026China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China Purple Mountain Observatory Chinese Academy of SciencesNanjing 210023China

The Jiao Tong University Spectroscopic Telescope(JUST)is a 4.4-meter f/6.0 segmented-mirror telescope dedicated to spectroscopic *** JUST primary mirror is composed of 18 hexagonal segments,each with a diameter of 1.1 *** provides two Nasmyth platforms for placing science *** Nasmyth focus fits a field of view of 10′and the other has an extended field of view of 1.2°with correction optics.A tertiary mirror is used to switch between the two Nasmyth *** will be installed at a site at Lenghu in Qinghai Province,China,and will conduct spectroscopic observations with three types of instruments to explore the dark universe,trace the dynamic universe,and search for exoplanets:(1)a multi-fiber(2000 fibers)medium-resolution spectrometer(R=4000-5000)to spectroscopically map galaxies and large-scale structure;(2)an integral field unit(IFU)array of 500 optical fibers and/or a long-slit spectrograph dedicated to fast follow-ups of transient sources for multi-messenger astronomy;(3)a high-resolution spectrometer(R~100000)designed to identify Jupiter analogs and Earth-like planets,with the capability to characterize the atmospheres of hot exoplanets.

关键词： Astronomical instrumentation Optical telescopes Large-scale structure of the universe Redshift surveys Time domain astronomy Exoplanet astronomy

生命线工程的可靠性研究进展分析(Ⅱ)——国内电力系统的抗震可靠性

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北京工业大学学报 2024年第3期50卷 362-384页

作者：缪惠全高思远刘如山钟紫蓝张聪聪杜修力北京工业大学城市与工程安全减灾教育部重点实验室北京100124 中国地震局工程力学研究所哈尔滨150080 国网山东省电力公司东营供电公司山东东营257091

为了解国内电力系统的抗震可靠性研究现状,基于知识图谱分析软件CiteSpace分别对城市电力系统—城市电力系统抗震(可靠性)—城市电力系统抗震可靠性3个层次4个领域的发文量、发文作者、发文机构、期刊和关键词展开系统分析,梳理该领域... 详细信息

为了解国内电力系统的抗震可靠性研究现状,基于知识图谱分析软件CiteSpace分别对城市电力系统—城市电力系统抗震(可靠性)—城市电力系统抗震可靠性3个层次4个领域的发文量、发文作者、发文机构、期刊和关键词展开系统分析,梳理该领域的历史发展脉络,明确热点问题、核心团队以及研究主题。通过进一步分析研究主题,明确其研究现状和关键科学问题。研究表明:国内电力系统的抗震可靠性研究主要包括地震灾害、地震反应、易损性、可靠性4个方面;关键科学问题包括不同电力设备与设施的震害机理与抗震措施、电力系统不同元件地震易损性分析方法、变电站和城市电网系统的韧性评估方法与提升理论、以电网为核心的耦合基础设施系统的灾害传播机理与量化模型4个方面。

关键词：韧性城市电力系统电网变电站地震可靠性

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“肺与大肠相表里”物质相关性的研究进展

世界中医药 2024年第1期19卷 128-132页

作者：张丛丛李婉莹张梦瑶穆德华毛静河南中医药大学药学院郑州450046

中医药文化历史源远流长,作为中医药藏象理论的重要组成部分,“肺与大肠相表里”阐述了肺-肠来源相同,生理上相互协作,病理上和治疗上相互影响。现基于“肺与大肠相表里”理论,分别从经络、津液代谢、黏膜免疫及肠道运动等方面探讨肺-... 详细信息

中医药文化历史源远流长,作为中医药藏象理论的重要组成部分,“肺与大肠相表里”阐述了肺-肠来源相同,生理上相互协作,病理上和治疗上相互影响。现基于“肺与大肠相表里”理论,分别从经络、津液代谢、黏膜免疫及肠道运动等方面探讨肺-肠物质相关性,为临床治疗肺肠相关疾病提供参考。

关键词：肺与大肠相表里肺-肠轴黏膜免疫水液代谢水通道蛋白分泌型免疫球蛋白活性肽肠道菌群

Experimental Evaluation of Flexural Behavior of Stress Laminated Timber Decks

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Journal of Renewable Materials 2022年第12期10卷 3599-3610页

作者： Qingguo Ben congcong zhang Benkai Shi Huifeng Yang JSTI Group Nanjing210017China Nanjing Tech University Nanjing 211816China

Stress laminated timber(SLT)deck is assembled using timber(umber or glulam)components placed side by side and stressed together,which has the advantages of easy prefabrication and good cost *** work pre-sented an experimental investigation of bending tests per formed on SLT *** parameters,including pre-stress levels,distance of pre-stressing bars,and the existence of self tapping screw(STS)reinforcement,were taken into *** reinforce the compressive property of timber perpendicular to the grain,the STSs were placed under the anchor plate of the pre-stressed *** experimental results were analyzed and discussed in terms of failure modes,ultimate bearing capacity,ultimate strain,and bending *** was found that the SLT slab showed satisfactory composite action as well as resid ual bearing *** pre stress levels showed an obvious effect on the load bearing capacity and relatively slight effect on the bending stiffness.

关键词： Stress laminated timber pre stress bridge deck slabs self tapping screw bending performances

Highly responsive biosensors based on organic field-effect transistors under light irradiation

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Chinese Chemical Letters 2021年第11期32卷 3364-3367页

作者： Xiaoqian Jiang Chenfang Sun congcong zhang Shanshan Cheng Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic Sciences School of ScienceTianjin UniversityTianjin 300072China Institute for Advanced Interdisciplinary Research University of JinanJi'nan 250011China

High responsivity and sensitivity play essential roles in the development of organic field-effect transistors(OFETs)-based biosensors with regard to biological detections,particularly for disease ***,how to design a biosensor which improves these two outstanding properties while achieving low cost,easy processing,and time saving is a daunting ***,a novel biosensor based on OFET with copolymer thin film,whose surface is illuminated with a suitable light beam is *** film can be used as both an organic semiconductor material and as a photoelectric active *** to amplification of signals as a result of the film’s strong response to light,the biosensor possesses higher responsivity and sensitivity compared to dark condition and even realizes a maximum responsivity of up to 10^(3)for alpha-fetoprotein(AFP)*** simple combination of light and transistor builds a bridge between photoelectric effect and biological *** addition,the emergence of more excellent photoelectric active materials is expected to pave a way for ultrasensitive bio-chemical diagnostic tools.

关键词： Organic field-effect transistors Photoelectric active materials Photo response Biosensors Disease diagnosis

考虑品牌优势的回收商生产模式研究:再制造或翻新

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工业工程 2024年第3期27卷 130-137,158页

作者：郭强张聪聪聂佳佳西南交通大学经济管理学院四川成都610031

研究品牌优势对回收商生产模式选择的影响机制,并基于三方博弈模型,运用KKT条件等方法分析不同品牌优势下,回收商选择再制造或翻新的决策条件和利益分配结果。结果表明,在品牌优势较低的情况下,回收商的生产模式选择会依赖回收成本。当... 详细信息

研究品牌优势对回收商生产模式选择的影响机制,并基于三方博弈模型,运用KKT条件等方法分析不同品牌优势下,回收商选择再制造或翻新的决策条件和利益分配结果。结果表明,在品牌优势较低的情况下,回收商的生产模式选择会依赖回收成本。当回收成本较低时,全部翻新是回收商最优策略,但这会损害品牌制造商和品牌零售商的利益;当回收成本适中时,回收商倾向于部分翻新,此时品牌零售商可以从中获益,但品牌制造商会受到冲击;当回收成本较高时,回收商翻新威胁小,品牌制造商和品牌零售商都会默认接受这一结果。在品牌优势较高的情况下,回收商和品牌制造商有动机达成再制造协议,实现双方的共赢,但品牌零售商会极力反对这一协议。此外,合作再制造模式并不一定能带来更高的消费者剩余,在一定条件下,翻新竞争模式下消费者剩余可能会超过合作再制造模式下的水平。

关键词：闭环供应链品牌优势再制造翻新

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Graphene Nanostructure-Based Tactile Sensors for Electronic Skin Applications

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Nano-Micro Letters 2019年第4期11卷 239-275页

作者： Pei Miao Jian Wang congcong zhang Mingyuan Sun Shanshan Cheng Hong Liu Institute for Advanced Interdisciplinary Research Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of ShandongUniversity of Jinan336 Nanxinzhuang West RoadJinan 250011People’s Republic of China Department of Chemistry School of Chemistry and Chemical EngineeringUniversity of Jinan336 Nanxinzhuang West RoadJinan 250011People’s Republic of China Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic SciencesSchool of ScienceTianjin University92 Weijin RoadTianjin 300072People’s Republic of China Center of Bio and Micro/Nano Functional Materials State Key Laboratory of Crystal MaterialsShandong University27 Shanda South RoadJinan 250100People’s Republic of China

Skin is the largest organ of the human body and can perceive and respond to complex environmental ***,the development of electronic skin(E-skin)for the mimicry of the human sensory system has drawn great attention due to its potential applications in wearable human health monitoring and care systems,advanced robotics,artificial intelligence,and human-machine *** sense is one of the most important senses of human skin that has attracted special *** ability to obtain unique functions using diverse assembly processible methods has rapidly advanced the use of graphene,the most celebrated two-dimensional material,in electronic tactile sensing *** a special emphasis on the works achieved since 2016,this review begins with the assembly and modification of graphene materials and then critically and comprehensively summarizes the most advanced material assembly methods,device construction technologies and signal characterization approaches in pressure and strain detection based on graphene and its derivative *** review emphasizes on:(1)the underlying working principles of these types of sensors and the unique roles and advantages of graphene materials;(2)state-of-the-art protocols recently developed for high-performance tactile sensing,including representative examples;and(3)perspectives and current challenges for graphene-based tactile sensors in E-skin applications.A summary of these cutting-edge developments intends to provide readers with a deep understanding of the future design of high-quality tactile sensing devices and paves a path for their future commercial applications in the field of E-skin.

关键词： Graphene derivatives Tactile sensor Electronic skin Assembly