SLEEPER

作品数：24被引量：30H指数：3
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相关领域：交通运输工程机械工程更多>>
相关作者：杨菁徐望明尹太郎张怡吴庚香更多>>
相关机构：武汉大学核工业北京地质研究院北京全路通信信号研究设计院集团有限公司西北大学更多>>
相关期刊：《Railway Engineering Science》《Marine Life Science & Technology》《High-Speed Railway》《校园英语》更多>>
相关基金：国家自然科学基金国家重点基础研究发展计划更多>>
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Mechanism of cross-level settlements and void accumulation of wide and conventional sleepers in railway ballast
《Railway Engineering Science》2024年第3期361-383,共23页Olga Nabochenko Mykola Sysyn Norman Krumnow Szabolcs Fischer 
The cross-level and twist irregularities are the most dangerous irregularity types that could cause wheel unloading with the risk of derailments and additional maintenance expenses.However,the mechanism of the irregul...
关键词：Wide sleeper Ballasted track Sleeper support inhomogeneity Sleeper foot form Discrete element modeling Void accumulation 
Experimental study and numerical simulation of the impact of under-sleeper pads on the dynamic and static mechanical behavior of heavy-haul railway ballast track
《Railway Engineering Science》2024年第3期384-400,共17页Yihao Chi Hong Xiao Yang Wang Zhihai Zhang Mahantesh M.Nadakatti 
the project supported by the National Natural Science Foundation of China(Grant No.52372425);the Fundamental Research Funds for the Central Universities(Science and technology leading talent team project)(Grant No.2022JBXT010).
Laying the under-sleeper pad(USP)is one of the effective measures commonly used to delay ballast degradation and reduce maintenance workload.To explore the impact of application of the USP on the dynamic and static me...
关键词：Heavy-haul railway Under-sleeper pad Discrete element method Multi-flexible body dynamic coupling analysis Mechanical behavior Quality state 
Analysis of mesoscopic mechanical dynamic characteristics of ballast bed with under sleeper pads被引量：1
《Railway Engineering Science》2024年第1期107-123,共17页Xiong Yang Liuyang Yu Xuejun Wang Zhigang Xu Yu Deng Houxu Li 
supported by the National Natural Science Foundation of China under Grants Nos.52165013 and 51565021.
The meso-dynamical behaviour of a high-speed rail ballast bed with under sleeper pads(USPs)was studied.The geometrically irregular refined discrete element model of the ballast particles was constructed using 3D scann...
关键词：Under sleeper pads Ballast bed Discrete element method Mesoscopic mechanical dynamic characteristics 
Numerical Study on Lateral Buckling Mode of Pipelines Laid on A Sleeper
《China Ocean Engineering》2023年第3期495-505,共11页LIU Run HAO Xin-tong LI Cheng-feng YU Zheng LI Qing-xin 
financially supported by the National Science Fund for Distinguished Young Scholars of China (Grant No.51825904)。
Because non-buried submarine pipelines under cyclic thermal loading are prone to global buckling,sleepers are commonly laid along the pipeline route to induce a series of relatively small and controllable lateral buck...
关键词：submarine pipeline buckling mode initial imperfection new sleeper 
Mechanical deformation properties of Continuous Welded Rail on kilometer-span suspension bridge for high-speed railway被引量：2
《High-Speed Railway》2023年第2期97-109,共13页Xiaopei Cai Wanli Liu Liang Gao Yonghua Su Jingfan Yang 
supported by the National Key R&D Program of China(2022YFB2602901);the National Natural Science Foundation of China(No.52178405).
The complex bridge-track interaction between kilometer-span bridges and continuous Welded Rail(CWR)brings great challenges to CWR designing.Taking a suspension bridge with laying CWR as a case,the mechanical propertie...
关键词：Kilometer-span suspension bridge Continuous welded rail Rail expansion joint Statics mechanical properties Sleeper-supporting apparatus Dynamic response 
Influence of unsupported sleepers on the dynamic stability of ballasted bed based on wheelset impact tests被引量：1
《Railway Engineering Science》2023年第1期52-60,共9页Juzhen Liu Shuai Du Ganzhong Liu Ping Wang Rong Chen Xiankui Wei Hao Liu 
The present work was supported by the National Natural Science Foundation of China(No.52008395).
The unsupported sleeper can change the load characteristics of ballast particles and thus affect the dynamic stability of a ballasted bed.In this work,a laboratory test was constructed on a ballasted track containing ...
关键词：Unsupported sleeper Ballasted bed Wheelset impact test VIBRATION Dynamic stability 
欧洲卧铺(European Sleeper)计划2023年启动运营
《铁路通信信号工程技术》2022年第11期81-81,共1页黄双宁(译) 
欧洲的夜车初创企业欧洲卧铺(European Sleeper)预计将于2023年首次在布鲁塞尔-阿姆斯特丹-柏林-普拉哈(Brussels-Amsterdam-Berlin-Praha)线路上提供服务。这家荷兰公司一年前宣布,基础设施管理公司Infrabel、Pro Rail、DB Netz和Sprá...
关键词：基础设施管理 初创企业 阿姆斯特丹 EUROPEAN 时间表 卧铺 
The molecular mechanism of natural short sleep:A path towards understanding why we need to sleep被引量：1
《Brain Science Advances》2022年第3期165-172,共8页Liubin Zheng Luoying Zhang 
supported by grants from the Ministry of Science and Technology of China(Grant No.2021ZD0203202);the Natural Science Foundation of China(Grant Nos.31930021 and 32022035)。
Sleep constitutes a third of human life and it is increasingly recognized as important for health.Over the past several decades,numerous genes have been identified to be involved in sleep regulation in animal models,b...
关键词：SLEEP DURATION NATURAL SHORT SLEEP SHORT SLEEPER gene mutation 
Production of functional sperm from in vitro-cultured premeiotic spermatogonia in a marine fish被引量：3
《Zoological Research》2022年第4期537-551,共15页Hong Zhang Wan-Wan Zhang Cheng-Yu Mo Meng-Dan Dong Kun-Tong Jia Wei Liu Mei-Sheng Yi 
supported by the National Key R&D Program of China(2018YFD0901205);National Natural Science Foundation of China(31771587,31970535);Guangdong Basic and Applied Basic Research Foundation(2020A1515010358)。
In vitro production of functional gametes can revolutionize reproduction by reducing generation intervals and accelerating genetic breeding in aquaculture,especially in fish with relatively long generations.Neverthele...
关键词：In vitro spermatogenesis 3D culture model SPERMATOGONIA Four-eyed sleeper MELATONIN Genetic breeding 
High chromosomal evolutionary dynamics in sleeper gobies(Eleotridae)and notes on disruptive biological factors in Gobiiformes karyotypes(Osteichthyes,Teleostei)
《Marine Life Science & Technology》2021年第3期293-302,共10页Simião Alefe Soares da Silva Paulo Augusto de Lima-Filho Clóvis Coutinho da Motta-Neto Gideão Wagner Werneck Félix da Costa Marcelo de Bello Cioffi Luiz Antônio Carlos Bertollo Wagner Franco Molina 
The authors thank to the ICMBio/SISBIO(#19135-4)for the authorization in collecting specimens.We are also grateful to Dr.JoséGarcia Júnior for the taxonomic identification of specimens utilized in the study.This work was supported by the Conselho Nacional de Desenvolvimento Cient.ico e Tecnol.gico(CNPq)[#442664/2015-0,#442626/2019-3].
The order Gobiiformes is made up of more than 2200 species,representing one of the most diverse groups among teleost fishes.The biological causes for the tachytelic karyotype evolution of the gobies have not yet been ...
关键词：Chromosome evolution Dispersive potential GOBY Karyotype diversification Microsatellites rDNA 
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