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Reliability Simulation Evaluation of Complex Repairable System Considering Common Cause Failures

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Reliability Simulation Evaluation of Complex Repairable Syst...

Mud-Shale Gas Forming Conditions in Carboniferous and Strategic Area Selection in Qaidam Basin

第五届体系工程学术会议——数智时代的体系工程

作者： li junliang ZHU Huayuan Wang liming Ma Haiyang liu yang Qingdao campus Naval Aviation University

In view of the common cause failures and the non-negligible maintenance influence in complex repairable systems, this paper proposes a reliability simulation evaluation method under the influence of common cause failure and maintenance behavior. By analyzing the mechanism of common cause failures, the coupling effect between maintenance behavior and common cause failure is clarified, and the reliability simulation model of repairable system under common cause failures is established. Furthermore, based on Monte Carlo method, the reliability simulation evaluation algorithm of repairable systems under common cause failures is designed to evaluate the dynamic failure probability. Taking aviation support system as an example, the influence of maintenance behavior and common cause failures on system reliability is analyzed, and the feasibility and effectiveness of the proposed method is proved.

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Acta Geologica Sinica(English Edition) 2015年第A1期89卷 254-256页

作者： li junliang XIAO Yongjun liN Wu School of Geoscience China University of Petroleum Qingdao City Shandong Province 266555 China Western New Prospect Research Institute Shengli Oilfield Company SINOPEC Dongying City Shandong Province257000 China

Exploration at home and abroad have proved that oil and gas preserved in mud-shale reservoir is frontier for oil industry, marine mud-shale in America and marine/ terrestrial mud-shale in China both exhibited good pot... 详细信息

关键词： SHALE gas CARBONIFEROUS Period PETROLEUM prospecting PETROLEUM geology BASINS (Geology) CHINA

Adenovirus-mediated transfection with glucose transporter 3 suppresses PC12 cell apoptosis following ischemic injury

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Neural Regeneration Research 2012年第17期7卷 1338-1342页

作者： junliang li Xinke Xu Shanyi Zhang Meiguang Zheng Zhonghua Wu Yinlun Weng Leping Ouyang Jian Yu Fangcheng li Department of Neurosurgery Sun Yat-sen Memorial Hospital Sun Yat-sen University Guangzhou 510120 Guangdong Province China Department of Neurosurgery Henan Provincial People＇s Hospital Zhengzhou 450003 Henan Province China

In this study, we investigated the effects of adenovirus-mediated transfection of PC12 cells with glucose transporter 3 after ischemic injury. The results of flow cytometry and TUNEL showed that exogenous glucose transporter 3 significantly suppressed PC12 cell apoptosis induced by ischemic injury. The results of isotopic scintiscan and western blot assays showed that, the glucose uptake rate was significantly increased and nuclear factor kappaB expression was significantly decreased after adenovirus-mediated transfection of ischemic PC12 cells with glucose transporter 3. These results suggest that adenovirus-mediated transfection of cells with glucose transporter 3 elevates the energy metabolism of PC12 cells with ischemic injury, and inhibits cell apoptosis.

关键词： glu-cose t ansporter 3 ischemia glucose uptake rate apoptosis nuclear factor kappaB

Gravity Flow on Slope and Abyssal Systems in the Qiongdongnan Basin,Northern South China Sea

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Acta Geologica Sinica(English Edition) 2011年第1期85卷 243-253页

作者： SU Ming XIE Xinong li junliang JIANG Tao ZHANG Cheng HE Yunlong TIAN Shanshan ZHANG Cuimei Key Laboratory of Tectonics and Petroleum Resources （China University of Geosciences） Ministry of Education Wuhan 430074 China CAS Key Laboratory of Marginal Sea Geology South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou 510301 China Department of Technology Zhanjiang Branch of CNOOC Zhanjiang 524057 China

The study of new seismic data permits the identification of sediment gravity flows in terms of internal architecture and the distribution on shelf and abyssal setting in the Qiongdongnan Basin （QDNB）. Six gravity flow types are recognized：（1） turbidite channels with a truncational basal and concordant overburden relationship along the shelf edge and slope, comprising laterally-shifting and vertically-aggrading channel complexes; （2） slides with a spoon-shaped morphology slip steps on the shelf-break and generated from the deformation of poorly-consolidated and high water content sediments; （3） slumps are limited on the shelf slope, triggered either by an anomalous slope gradient or by fault activity; （4） turbidite sheet complexes （TSC） were ascribed to the basin-floor fan and slope fan origin, occasionally feeding the deep marine deposits by turbidity currents; （5） sediment waves occurring in the lower slope-basin floor, and covering an area of approximately 400 km2, were generated beneath currents flowing across the sea bed; and （6） the central canyon in the deep water area represents an exceptive type of gravity flow composed of an association of debris flow, turbidite channels, and TSC. It presents planar multisegment and vertical multiphase characteristics. Turbidite associated with good petrophysical property in the canyon could be treated as a potential exploration target in the QDNB.

关键词： gravity flow slope and abyssal system Qiongdongnan Basin South China Sea

以中国式现代化推进中华民族共同体建设的广东实践

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民族学刊 2023年第9期14卷 38-49,157页

作者：李俊良侯喆广东省民族宗教研究院广东广州510180

结合中央民族工作会议精神,地方政府如何以中国式现代化推进中华民族共同体建设已成为当前研究热点。从理论层面分析,以中国式现代化推进中华民族共同体建设有着丰富的内涵,其涵盖了中国式现代化的基本属性特征、前提条件和关键变量;以... 详细信息

结合中央民族工作会议精神,地方政府如何以中国式现代化推进中华民族共同体建设已成为当前研究热点。从理论层面分析,以中国式现代化推进中华民族共同体建设有着丰富的内涵,其涵盖了中国式现代化的基本属性特征、前提条件和关键变量;以中国式现代化推进共同体建设有相互契合的逻辑,其包含中央提出的“五位一体”战略布局、“四个与共”的共同体理念、新时代加强和改进民族工作的“十二个必须”等重要论述;在新时代构筑民族事务治理体系和治理能力现代化是推进中华民族共同体建设的现实依托。从地方实践层面分析,广东民族工作通过创新党建引领的体制机制,破解基层民族聚居社区治理难题;通过各类培根铸魂的育人工程,开展少数民族班教育铸牢中华民族共同体意识;改进多民族聚居社区互嵌格局,激发老街区新活力,促进各民族交往交流交融;以非物质文化遗产传承发展为载体,在文化创意方面搭建中华民族共同建设的平台;积极探索社区治理的国际实践,将民族团结进步创建的有益经验移植到国际化社区治理工作。上述创新模式与方法,从不同维度、广度和深度推进中华民族共同体建设。

关键词：中国式现代化中华民族共同体建设民族事务治理民族团结进步

Ultrafine ordered L1_(2)-Pt-Co-Mn ternary intermetallic nanoparticles as high-performance oxygen-reduction electrocatalysts for practical fuel cells

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Journal of Energy Chemistry 2024年第6期93卷 157-165,I0005页

作者： Enping Wang liuxuan Luo Yong Feng Aiming Wu Huiyuan li Xiashuang Luo Yangge Guo Zehao Tan Fengjuan Zhu Xiaohui Yan Qi Kang Zechao Zhuang Daihui Yang Shuiyun Shen junliang Zhang China-UK Low Carbon College Shanghai Jiao Tong UniversityShanghai 201306China Institute of Fuel Cells Key Laboratory for Power Machinery and Engineering of MOESchool of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240China Shanghai Tangfeng Energy Technology Co.Ltd. Shanghai 201306China State Key Laboratory of Advanced Chemical Power Sources Guizhou Meiling Power Sources Co.Ltd.Zunyi 563003GuizhouChina School of Chemistry and Chemical Engineering Chongqing UniversityChongqing 400044China Institute of New Energy for Vehicles School of Materials Science and EngineeringTongji UniversityShanghai 201804China Department of Chemical Engineering Columbia UniversityNY 10027USA

The long-range periodically ordered atomic structures in intermetallic nanoparticles(INPs)can significantly enhance both the electrocatalytic activity and electrochemical stability toward the oxygen reduction reaction(ORR)compared to the disordered atomic structures in ordinary solid-solution alloy ***,through a facile and scalable synthetic method,a series of carbon-supported ultrafine Pt_3Co_(x)Mn_(1-x)ternary INPs are prepared in this work,which possess the"skin-like"ultrathin Pt shells,the ordered L1_(2) atomic structure,and the high-even dispersion on supports(L1_(2)-Pt_3Co_(x)Mn_(1-x)/~SPt INPs/C).Electrochemical results present that the composition-optimized L1_(2)-Pt_3Co_(0.7)Mn_(0.3)/~SPt INPs/C exhibits the highest electrocata lytic activity among the series,which are also much better than those of the pristine ultrafine Pt/***,it also has a greatly enhanced electrochemical *** addition,the effects of annealing temperature and time are further *** importantly,such superior ORR electrocatalytic performance of L1_(2)-Pt_3Co_(0.7)Mn_(0.3)/~SPt INPs/C are also well demonstrated in practical fuel *** characterization analyses further reveal the major origins of the greatly enhanced ORR electrocata lytic performance:the Pt-Co-Mn alloy-induced geometric and ligand effects as well as the extremely high L1_(2) atomic-ordering *** work not only successfully develops a highly active and stable ordered ternary intermetallic ORR electrocatalyst,but also elucidates the corresponding"structure-function"relationship,which can be further applied in designing other intermetallic(electro)catalysts.

关键词： Platinum Cobalt Manganese Oxygen reduction reaction Ordered intermetallic L1_(2)atomic structure Proton-exchange membrane fuel cell

医学科技期刊举办在线学术活动的实践与思考——以“中华医学儿科超声影像经典病例解读”为例

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编辑学报 2022年第1期34卷 76-79页

作者：汪荣李军亮中华医学电子音像出版社有限责任公司北京100052

医学科技期刊作为学术交流平台,常通过举办学术活动来促进学术交流、增强期刊影响力。但受到疫情防控政策影响,许多学术活动的形式逐渐由线下转变为在线网络直播。本文以《中华医学超声杂志(电子版)》举办的“中华医学儿科超声影像经典... 详细信息

医学科技期刊作为学术交流平台,常通过举办学术活动来促进学术交流、增强期刊影响力。但受到疫情防控政策影响,许多学术活动的形式逐渐由线下转变为在线网络直播。本文以《中华医学超声杂志(电子版)》举办的“中华医学儿科超声影像经典病例解读”在线学术活动为例,从内容策划、评审筹备、组织实施、会后服务等方面阐述医学科技期刊举办在线学术活动的实践经验及体会与思考,分析在线学术活动的优势与不足以及对期刊发展的作用与影响,以期为医学科技期刊行业的同人提供一些借鉴和参考。

关键词：医学科技期刊在线学术活动学术交流

Epitaxial quasi-2D/3D hybrid perovskite heterojunctions for photodetector with enhanced detectivity and stability

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Nano Research 2024年第7期17卷 6594-6602页

作者： Yifu Chen lin Zhang Xinxin Peng Weiran Qin Shiqing li Yingwei Wang Zhihui Chen Si Xiao Bin Yang Biao liu junliang Yang Han Huang Yun lin Jun He liming Ding Yongbo Yuan Hunan Key Laboratory of Super Microstructure and Ultrafast Process School of PhysicsCentral South UniversityChangsha 410083China Hunan Key Laboratory of Nanophotonics and Devices School of PhysicsCentral South UniversityChangsha 410083China College of Materials Science and Engineering Hunan UniversityChangsha 410082China Department of Photoelectric Information School of PhysicsCentral South UniversityChangsha 410083China Center for Excellence in Nanoscience Key Laboratory of Nanosystem and Hierarchical FabricationNational Center for Nanoscience and TechnologyChinese Academy of ScienceBeijing 100190China

Although numerous metal halide perovskite materials have been investigated in the field of optoelectronic,the development of perovskite heterojunctions with exotic structures is still ***,we report the epitaxial growth of quasi-two-dimensional(Q-2D)perovskites on methylammonium lead iodide(MAPbI_(3))single crystals to form perovskite heterojunctions with interfacial *** MAPbI_(3)adjacent to epitaxial Q-2D perovskite shows blue shifted photoluminescence with shortened lifetime,which becomes significant with the reduced layer number of the Q-2D *** findings suggest the presence of an interfacial strain gradient leading to enhanced photocarrier ***,compared to the MAPbI_(3)single crystal detector,the BA_(2)MAPb_(2)I_(7)/MAPbI_(3)(BA:n-butylamine)heterojunction-based photodetector demonstrates a bandpass detecting property and exhibits 5 times enhanced external quantum efficiency and 83 times enhanced specific detectivity(D*=3.26×10^(11)Jones).Remarkably,the unencapsulated BA_(2)MAPb_(2)I_(7)/MAPbI_(3)heterojunction is stable in ambient condition for>300 *** Q-2D/3D heterojunction shows suppressed ion inter-diffusion due to the presence of Q-2D phase.

关键词： epitaxial growth interfacial strain quasi-two-dimensional/three-dimensional(Q-2D/3D)heterojunctions ion inter-diffusion

Bioactive glass promotes the barrier functional behaviors of keratinocytes and improves the Re-epithelialization in wound healing in diabetic rats

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Bioactive Materials 2021年第10期6卷 3496-3506页

作者： Fengling Tang junliang li Weihan Xie Yunfei Mo Lu Ouyang Fujian Zhao Xiaoling Fu Xiaofeng Chen Department of Biomedical Engineering School of Materials Science and EngineeringSouth China University of TechnologyGuangzhou 510641PR China National Engineering Research Center for Tissue Restoration and Reconstruction Guangzhou 510006PR China Key Laboratory of Biomedical Engineering of Guangdong Province and Innovation Center for Tissue Restoration and ReconstructionSouth China University of TechnologyGuangzhou 510006PR China Stomatological Hospital Southern Medical UniversityGuangzhou 510280PR China

Upon skin injury,re-epithelialization must be triggered promptly to restore the integrity and barrier function of the ***,this process is often delayed or interrupted in chronic wounds like diabetic foot *** that BG particles can activate multiple genes in various cells,herein,we hypothesized that bioactive glass(BG)might be able to modulate the barrier functional behaviors of *** measuring the transepithelial electrical resistance(TEER)and the paracellular tracer flux,we found the 58S-BG extracts substantially enhanced the barrier function of keratinocyte *** BG extracts might exert such effects by promoting the keratinocyte differentiation and the formation of tight junctions,as evidenced by the increased expression of critical differentiation markers(K10 and involucrin)and TJ protein claudin-1,as well as the altered subcellular location of four major TJ proteins(claudin-1,occludin,JAM-A,and ZO-1).Besides,the cell scratch assay showed that BG extracts induced the collective migration of keratinocytes,though they did not accelerate the migration rate compared to the *** in vivo study using a diabetic rat wound model demonstrated that the BG extracts accelerated the process of re-epithelialization,stimulated keratinocyte differentiation,and promoted the formation of tight junctions in the newly regenerated *** findings revealed the crucial effects of BGs on keratinocytes and highlighted its potential application for chronic wound healing by restoring the barrier function of the wounded skin effectively.

关键词： Bioactive glass Keratinocyte Barrier function Diabetic wound healing