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地铁供电接触轨振动检测装置设计研究

机械工程与自动化 2024年第3期 142-143页

作者：刘永兴邓举明白影娜王柳青岛地铁运营有限公司山东青岛266041

当供电接触轨振动的位移量过大时,将对接触轨造成损伤,因此地铁工程师需不定期监测供电接触轨振动情况并记录。为方便地铁工程师监测供电接触轨振动情况,研制了地铁供电接触轨振动位移量检测装置。该装置以STM32F103R8T6型ARM芯片为核心... 详细信息

当供电接触轨振动的位移量过大时,将对接触轨造成损伤,因此地铁工程师需不定期监测供电接触轨振动情况并记录。为方便地铁工程师监测供电接触轨振动情况,研制了地铁供电接触轨振动位移量检测装置。该装置以STM32F103R8T6型ARM芯片为核心,实时检测振动变送器输出的4 mA~20 mA模拟电信号,计算振动位移量数值,并驱动ARM内部RTC模块生成日期和时间信息,每隔10 ms将日期、时间和振动位移量数值记录1次,将该数据记录在TF卡的TXT文件中。该装置对供电接触轨振动位移量的监测效果理想且成本低廉,值得在轨道交通行业内推广应用。

关键词：地铁供电接触轨振动监测

Potential Distribution of Alien Invasive Species and Risk Assessment:a Case Study of Erwinia amylovora in China

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Agricultural Sciences in China 2007年第6期6卷 688-695页

作者： CHEN Chen CHEN Juan HU bai-shi IIANG ying-hua LIU Feng-quan Key Laboratory of Monitoring and Management of Plant Diseases and Insects Ministry of Agriculture Nanjing Agricultural UniversityNanjing 210095 P.R.China

Alien invasive species represent a severe risk to biodiversity and economy, as in the case of fire blight （Erwinia amylovora）, a bacterial disease that originated in North America, which may be released into new locations by means of fruit trade. On the basis of the knowledge of Erwinia amylovora＇s biophysical characteristics and environmental data, the geographic information system （GIS） has been applied to determine areas where Erwinia amylovora can potentially invade China. Temperature and precipitation, during the blossoming period, are considered to be two critical factors affecting the Erwinia amylovora＇s suitable climatic zones. This spatial modeling approach was validated from a case study in Europe, where the occurrence of Erwinia amylovora has been proven. The model prediction agreed with the occurrence of the bacteria recorded in Europe, and the same procedure has been applied to produce a potential establishment area in China＇s two preferential apple cultivation regions, Bohai Bay region and Huangtu Altiplano region. It has been found that areas belonging to the high-risk category are more or less the main apple producing areas, accounting for their great economic importance in China. This methodology provides an initial baseline for assessment, prevention, and management of alien species that may become invasive under certain environmental conditions. In addition, this modeling approach provides a tool for policy makers to use, in making decisions on management practices where alien species are involved.

关键词： biological invasions Erwinia amylovora GIS potential distribution risk assessment

The Chromosomal Control of Leaf Characteristics of Early-Stage Plants in Wheat (Triticum aestivum L.)

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Agricultural Sciences in China 2011年第2期10卷 159-165页

作者： LI Cun-dong bai Zhi-ying Ye G Miyagi M Chapman S Reader S M LIU Chun-ji CSIRO Plant Industry Queensland Bioscience PrecinctSt LuciaQLD 4067Australia Faculty of Agriculture Hebei Agricultural UniversityBaoding 071000P.R.China College of Life Science Hebei Agricultural UniversityBaoding 071000P.R.China School of Land and Food Sciences University of QueenslandSt LuciaQLD 4072Australia John Innes Centre Norwich Research ParkColney NorwichNR4 7UHUK

Rapid expansion of leaves of early-stage plants in wheat produced by chromosomal control of characteristics related to rapid expansion of the first six leaves of wheat were investigated using a set of single chromosome substitution lines under two different temperature regimes（TRs）.Results from this study indicated that several chromosomes could be responsible for each of the four characteristics studied（including leaf width,leaf length,leaf elongation rate and leaf appearance index） and that different chromosomes may be responsible for the same characteristics at different *** a small number of substitutions that showed the most significant effects on leaf length were found among those that showed the most significant effects on leaf width,providing further evidence that these two characteristics are likely controlled by different sets of *** 4B,4D,and 5A are among those that were repeatedly detected to having significant effects on different leaf characteristics at the lower-TR and genes residing on these three chromosomes could be *** possibility and its implication are discussed.

关键词： wheat leaf characteristics chromosomal control

Regulation of Glial Function by Noncoding RNA in Central Nervous System Disease

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Neuroscience Bulletin 2023年第3期39卷 440-452页

作者： ying bai Hui Ren Liang Bian You Zhou Xinping Wang Zhongli Xiong Ziqi Liu Bing Han Honghong Yao Department of Pharmacology Jiangsu Provincial Key LaboratorySchool of MedicineSoutheast UniversityNanjing 210009China Co-innovation Center of Neuroregeneration Nantong UniversityNantong 226001China Institute of Life Sciences Key Laboratory of Developmental Genes and Human DiseaseSoutheast UniversityNanjing 210009China

Non-coding RNAs(ncRNAs)are a class of functional RNAs that play critical roles in different *** include microRNAs,long ncRNAs,and circular *** are highly expressed in the brain and are involved in the regulation of physiological and pathophysiological processes of central nervous system(CNS)*** evidence indicates that ncRNAs play key roles in CNS *** elucidating the mechanisms of ncRNA underlying the process of regulating glial function that may lead to the identification of novel therapeutic targets for CNS diseases.

关键词： Noncoding RNA MicroRNA Long noncoding RNA Circular RNA Astrocytes Microglia Oligodendrocytes

Reversible and irreversible heat generation of NCA/Si–C pouch cell during electrochemical energy-storage process

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Journal of Energy Chemistry 2019年第2期28卷 95-102页

作者： ying bai Limin Li Yu Li Guanghai Chen Huichun Zhao Zhaohua Wang Chuan Wu Hongyun Ma Xinquan Wang Hongyue Cui Jiang Zhou School of Materials Science and Engineering Beijing Institute of Technology Collaborative Innovation Center of Electric Vehicles in Beijing Lishen Research Institute Tianjin Lishen Battery Joint-stock Co.Ltd.

To meet the requirements of electronic vehicles(EVs) and hybrid electric vehicles(HEVs),the high energy density Li Ni_(0.8) Co_(0.15) Al_(0.05) O_2(NCA) cathode and Si–C anode have attracted more *** we report the thermal behaviors of NCA/Si–C pouch cell during the charge/discharge processes at different current *** total heat generations are derived from the surface temperature change during electrochemical Li+insertion/extraction in adiabatic *** reversible heat is determined by the entropic coefficients,which are related with open-circuit voltage at different temperatures; while the irreversible heat is determined by the internal resistance,which can be obtained via V–I characteristic,electrochemical impedance spectroscopy and hybrid pulse power characterization(HPPC).During the electrochemical process,the reversible heat contributes less than 10% to total heat generation; and the heat generated in charge process is less than that in discharge *** results of thermal behaviors analyses are conducive to understanding the safety management and paving the way for building a reliable thermal model of high energy density lithium ion battery.

关键词： Heat generation Internal resistance Reversible heat Irreversible heat Pouch cell

Initiating High-Voltage Multielectron Reactions in NASICON Cathodes for Aqueous Zinc/Sodium Batteries

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Energy Material Advances 2023年第1期4卷 426-437页

作者： Jiasheng Yue Shuqiang Li Shi Chen Jingjing Yang Xueying Lu Yu Li Ran Zhao Chuan Wu ying bai Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081PR China Yangtze Delta Region Academy of Beijing Institute of Technology Jiaxing 314019PR China

Sodium superionic conductor(NASICON)is a class of compounds with robust polyanionic frameworks and high thermal stability,which are regarded as prospective cathodes candidates for secondary ***,NASICON cathodes typically have low discharge plateaus and low practical capacities in aqueous ***,Na_(3)V_(1.75)Fe_(0.25)(PO_(4))_(2)F_(3) is investigated as a cathode material for the aqueous zinc/sodium *** the addition of F helps with the improvement of NASICON structural stability,the low-cost Fe substitution has a positive impact on the capacity increment,reaction voltage increases,and cycling stability *** the Fe^(3+)substitution could induce a change in the spin magnetic moments of the 3d orbitals of the VO_(4)F_(2) and FeO_(4)F_(2) octahedra,the 2-electron reaction of V is activated,which are V^(4+)/V^(3+)and V^(5+)/V^(4+)redox *** a result,the novel Na_(3)V_(1.75)Fe_(0.25)(PO_(4))_(2)F_(3) cathode delivers a high operating voltage of 1.7 V,a high energy density of 209 W·h·kg^(−1) and stable lifespan(83.5%capacity retention after 6,000 cycles at 1 A·g^(−1))in the aqueous zinc/sodium *** research demonstrates the practicality of activating multielectron reactions to optimize the electrochemical properties of NASICON cathodes for aqueous secondary batteries.

关键词： stability substitution increment

Cold Model of Coal Gas Component Concentration Distribution in Blast Furnace Raceway

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Journal of Iron and Steel Research International 2009年第6期16卷 1-6页

作者： ZHANG Sheng-fu WEN Liang-ying bai Chen-guang QIU Gui-bao HU Mei-long LU Xue-wei College of Materials Science and Engineering Chongqing University Chongqing 400030 China

Primary distribution of coal gas in blast furnace raceway has an important effect on blast furnace ironmaking process. The coal gas component concentration distribution was studied experimentally using a three-dimensional cold model. The results showed that CH4 concentration diminishes along with the height increasing on vertical section of raceway, and the concentration is the highest in the bottom of raceway. CH4 concentration increases gradually *** raceway depth with the lowest concentration value in front of the tuyere. The distribution of CH4 concentration has different characteristics in different raceway zones.

关键词： blast furnace raceway coal gas component concentration distribution

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“材料力学”课程思政改革与实践

教育教学论坛 2024年第27期 73-76页

作者：刘海峰白俊英车佳玲张学科宁夏大学土木与水利工程学院宁夏银川750021

“材料力学”是高校工科类专业的一门专业基础课程,在本科人才培养体系中具有承前启后的作用。在“材料力学”课程教学过程中,有机融入具有思政元素的工程实例,培养学生的爱国主义精神、社会责任感和职业精神;将科研融入教学,提高学生... 详细信息

“材料力学”是高校工科类专业的一门专业基础课程,在本科人才培养体系中具有承前启后的作用。在“材料力学”课程教学过程中,有机融入具有思政元素的工程实例,培养学生的爱国主义精神、社会责任感和职业精神;将科研融入教学,提高学生的创新能力和解决工程实际问题的能力;积极承办学科竞赛,搭建学科竞赛平台,提高学生动手实践能力;将学科竞赛、工程实践、课程思政等融入教学,推动专业升级和优化,提升教师教学研究能力,为工科类专业课实现课程思政提供参考。

关键词：材料力学思政元素教学设计

淋巴结靶向药物递送系统治疗移植排斥反应研究进展

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中华器官移植杂志 2024年第7期45卷 481-485页

作者：邱佳妮宋怡姝靳巧锋白莹谢明星王静华中科技大学同济医学院附属协和医院超声医学科湖北省影像医学临床医学研究中心分子影像湖北省重点实验室武汉430022

免疫抑制剂是临床上减轻器官移植排斥反应、改善受者术后短期临床结局最常用的治疗手段。然而全身使用免疫抑制剂会增加受者机会性感染的风险和恶性肿瘤的发生率。因此,将免疫抑制剂高效靶向递送至靶器官显得尤为重要。淋巴结是移植排... 详细信息

免疫抑制剂是临床上减轻器官移植排斥反应、改善受者术后短期临床结局最常用的治疗手段。然而全身使用免疫抑制剂会增加受者机会性感染的风险和恶性肿瘤的发生率。因此,将免疫抑制剂高效靶向递送至靶器官显得尤为重要。淋巴结是移植排斥反应激活的主要场所,近年来,靶向淋巴结的药物递送系统已在移植排斥反应治疗中发挥越来越重要的作用。本综述简要介绍了淋巴结在移植排斥反应中的作用机制,重点阐述了淋巴结靶向药物递送系统的构建及其在移植排斥反应中的应用进展,旨在将其应用于移植排斥反应的治疗以改善预后。

关键词：淋巴结移植排斥靶向药物递送系统免疫抑制剂主动靶向被动靶向