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Investigation on vehicle occupant dummy applicability for under-foot impactloading conditions

Chinese Journal of Traumatology 2024年第4期27卷 235-241页

作者： Teng-Fei Tian Fu-Hao Mo Hao-Yang su Can Huang Hui Zhao jun Liu Bo Shang Kui Li Jin-Long Qiu State Key Laboratory of Advanced Design and Manufacture for Vehicle Body Hunan UniversityChangsha410082China Institute for Traffic Medicine Daping HospitalArmy Medical UniversityChongqing400042China Chongqing Zhongzheng Judicial Expert Center Chongqing400020China NIO Limited Liability Company Shanghai200050China College of Medical Informatics Chongqing Medical UniversityChongqing400016China Chongqing Key Laboratory of Traffic Injury and Vehicle Ergonomics Chongqing400042China

Purpose:Under-foot impact loadings can cause serious lower limb injuries in many activities,such asautomobile collisions and underbody explosions to military *** present study aims to comparethe biomechanical responses of the mainstream vehicle occupant dummies with the human body lowerlimb model and analyze their robustness and applicability for assessing lower limb injury risk in underfoot impact loading ***:The Hybrid III model,the test device for human occupant restraint(THOR)model,and a hybridhuman body model with the human active lower limb model were adopted for under-foot impactanalysis regarding different impact velocities and initial lower limb ***:The results show that the 2 dummy models have larger peak tibial axial force and highersensitivity to the impact velocities and initial postures than the human lower limb *** particular,the Hybrid III dummy model presented extremely larger peak tibial axial forces than the human lowerlimb *** the case of minimal difference in tibial axial force,Hybrid III's tibial axial force(7.5 KN)isstill 312.5%that of human active lower limb's(2.4 KN).Even with closer peak tibial axial force values,thebiomechanical response curve shapes of the THOR model show significant differences from the humanlower limb ***:Based on the present results,the Hybrid III dummy cannot be used to evaluate the lowerlimb injury risk in under-foot loading *** contrast,potential improvement in ankle biofidelity and related soft tissues of the THOR dummy can be implemented in the future for betterapplicability.

关键词： Lower limb Under-foot impact Human body model Dummy Finite element model

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无卤阻燃聚烯烃电缆料及其与阻燃剂相容性的研究进展

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工程塑料应用 2024年第3期52卷 172-178页

作者：金赣苏梦悦王奕隆吕泽鹏吴锴周峻西安交通大学电工材料电气绝缘全国重点实验室西安710049

随着城市化的进行,电力电缆取代架空线路进行能源输送和分配的需求不断增加,聚烯烃正逐渐成为电力电缆的主要基体材料。聚烯烃属于易燃材料,为了减少电缆引起的火灾事件并考虑到环保要求,在材料中加入无卤阻燃剂是目前提高聚烯烃电缆材... 详细信息

随着城市化的进行,电力电缆取代架空线路进行能源输送和分配的需求不断增加,聚烯烃正逐渐成为电力电缆的主要基体材料。聚烯烃属于易燃材料,为了减少电缆引起的火灾事件并考虑到环保要求,在材料中加入无卤阻燃剂是目前提高聚烯烃电缆材料阻燃性能的主要方式。首先归纳了无卤阻燃聚烯烃电缆的基体材料和基料改性方法,其次介绍了无卤阻燃剂的分类和阻燃机理,最后综述了提高基体和无卤阻燃剂相容性的最新研究进展。

关键词：电缆料聚烯烃无卤阻燃剂相容性

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浅谈膜分离技术在生物化工方面的应用

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四川化工 2024年第1期27卷 16-19页

作者：苏俊四川化工集团有限责任公司成都工程分公司四川成都610041

膜分离技术被称为21世纪最具发展前景的高新技术之一,目前这项技术在许多领域中已有着广泛的应用。介绍膜分离技术的主要类型及优势,综述其在生物化工方面的应用现状,应用实践表明,膜分离技术可有效解决传统分离技术在产品分离过程中存... 详细信息

膜分离技术被称为21世纪最具发展前景的高新技术之一,目前这项技术在许多领域中已有着广泛的应用。介绍膜分离技术的主要类型及优势,综述其在生物化工方面的应用现状,应用实践表明,膜分离技术可有效解决传统分离技术在产品分离过程中存在的工艺条件要求高、过程复杂、周期长、能耗大、易造成二次污染等问题,明显提升生物化工产品的收率和品质。同时,也对膜分离技术在生物化工应用中存在的问题提出了优化建议。

关键词：生物化工膜分离技术优势应用现状存在的问题优化建议

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大学生如何解码群团组织的新媒体传播形式和内容——以Z组织的B站账号为例

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清华大学教育研究 2024年第4期45卷 69-81页

作者：邵颖王熙苏君阳北京师范大学教育学部

借鉴霍尔的解码理论和意义接合理论，对22名大学生开展访谈，探讨大学生对于群团组织Z在B站的传播形式和内容的解码特征及形塑解码的力量。研究发现，大学生的解码呈现“去政治性”,这使得将传播活动视为“追求‘傻乐’的审美化景观”... 详细信息

借鉴霍尔的解码理论和意义接合理论，对22名大学生开展访谈，探讨大学生对于群团组织Z在B站的传播形式和内容的解码特征及形塑解码的力量。研究发现，大学生的解码呈现“去政治性”,这使得将传播活动视为“追求‘傻乐’的审美化景观”和“彰显精英品位的知识解读”这两种看似矛盾的话语被接合在一起。一方面，新自由主义下的个人主义和泛娱乐主义导致了大学生政治冷漠与唯快乐是从的“傻乐”状态的形成。另一方面，在长期应试教育和技治主义的综合作用下，大学生虽强调硬核知识和严肃分析的价值，却难以将政治知识联系生活实践，更倾向于站在精英立场上认识政治和社会。究其原因，B站平台运营的商业逻辑和“过滤泡效应”强化了“去政治性”,不仅助长了大学生对于政治议题与公共事务的冷漠情绪，还滋长了个人主义与“傻乐主义”。为提升受众的思想政治素养，群团组织应坚持走群众路线，增强政治知识传播的回应性与有效性；对传播内容的政治意义进行深度阐释，提升受众政治参与的积极性。

关键词：去政治性大学生新媒体传播解码接合

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Development of a High-throughput Sequencing Platform for Detection of Viral Encephalitis Pathogens Based on Amplicon Sequencing

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Biomedical and Environmental Sciences 2024年第3期37卷 294-302页

作者： ZHANG Ya Li su Wen Zhe WANG Rui Chen LI Yan ZHANG jun Feng LIU Sheng Hui HU Dan He XU Chong Xiao YIN Jia Yu YIN Qi Kai HE Ying LI Fan FU Shi Hong NIE Kai LIANG Guo Dong TAO Yong XU Song Tao MA Chao Feng WANG Huan Yu Shaanxi University of Chinese Medicine Xianyang 712000ShaanxiChina National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases National Institute for Viral Disease Control and PreventionChinese Center for Disease Control and PreventionBeijing 102206China Guangzhou Center for Disease Control and Prevention Guangzhou 510000GuangdongChina Shandong Center for Disease Control and Prevention Jinan 250000ShandongChina Department of Ophthalmology Beijing Chaoyang HospitalCapital Medical UniversityBeijing 100020China Xi'an Center for Disease Control and Prevention Xi’an 710054ShaanxiChina

Objective Viral encephalitis is an infectious disease severely affecting human *** is caused by a wide variety of viral pathogens,including herpes viruses,flaviviruses,enteroviruses,and other *** laboratory diagnosis of viral encephalitis is a worldwide ***,high-throughput sequencing technology has provided new tools for diagnosing central nervous system ***,In this study,we established a multipathogen detection platform for viral encephalitis based on amplicon *** We designed nine pairs of specific polymerase chain reaction(PCR)primers for the 12 viruses by reviewing the relevant *** detection ability of the primers was verified by software simulation and the detection of known positive *** sequencing was used to validate the samples,and consistency was compared with Sanger *** The results showed that the target sequences of various pathogens were obtained at a coverage depth level greater than 20×,and the sequence lengths were consistent with the sizes of the predicted *** sequences were verified using the National Center for Biotechnology Information BLAST,and all results were consistent with the results of Sanger *** Amplicon-based high-throughput sequencing technology is feasible as a supplementary method for the pathogenic detection of viral *** is also a useful tool for the high-volume screening of clinical samples.

关键词： Viral encephalitis Amplicon sequencing High-throughput sequencing Multipathogen detection

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Bone Research 2024年第1期12卷 122-136页

作者： Nan-Yu Zou Ran Liu Mei Huang Yu-Rui Jiao Jie Wei Yangzi Jiang Wen-Zhen He Min Huang Yi-Li Xu Ling Liu Yu-Chen sun Mi Yang Qi Guo Yan Huang Tian su Ye Xiao Wei-Shan Wang Chao Zeng Guang-Hua Lei Xiang-Hang Luo Chang-jun Li Department of Endocrinology Endocrinology Research CenterXiangya Hospital of Central South UniversityChangshaHunan 410008China Department of Orthopaedics Xiangya Hospital of Central South UniversityChangshaHunan 410008China Department of Epidemiology and Health Statistics Xiangya School of Public HealthCentral South UniversityChangshaChina Hunan Key Laboratory of Joint Degeneration and Injury ChangshaHunan 410008China Key Laboratory of Aging-related Bone and Joint Diseases Prevention and Treatment Ministry of EducationXiangya HospitalCentral South UniversityChangshaChina School of Biomedical Sciences Institute for Tissue Engineering and Regenerative MedicineFaculty of MedicineThe Chinese University of Hong KongHong Kong SARChina Department of Orthopaedics The First Affiliated Hospital of Shihezi UniversityShiheziXinjiangChina National Clinical Research Center for Geriatric Disorders Xiangya HospitalCentral South UniversityChangshaHunan 410008China

Skeletal stem/progenitor cell(SSPC)senescence is a major cause of decreased bone regenerative potential with aging,but the causes of SSPC senescence remain *** this study,we revealed that macrophages in calluses secrete prosenescent factors,including grancalcin(GCA),during aging,which triggers SSPC senescence and impairs fracture *** injection of human rGCA in young mice induced SSPC senescence and delayed fracture *** deletion of Gca in monocytes/macrophages was sufficient to rejuvenate fracture repair in aged mice and alleviate SSPC ***,GCA binds to the plexin-B2 receptor and activates Arg2-mediated mitochondrial dysfunction,resulting in cellular *** of Plxnb2 in SSPCs impaired fracture *** of GCA-neutralizing antibody enhanced fracture healing in aged ***,our study revealed that senescent macrophages within calluses secrete GCA to trigger SSPC secondary senescence,and GCA neutralization represents a promising therapy for nonunion or delayed union in elderly individuals.

关键词： healing union senescence

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In situ N-doped Bi_(3)O_(4)Br/(BiO)_(2)CO_(3) ultrathin nanojunctions with matched energy band structure for nonselective photocatalysis pollutant removal

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cMat 2024年第2期1卷 80-90页

作者： jun Di Yi-Ling Liu Yi Zhang Sha-Sha Guo su-Wei Wang Wei Jiang Hua-Ming Li Jie-Xiang Xia School of Chemistry and Chemical Engineering National Special Superfine Powder Engineering Research CenterNanjing University of Science and TechnologyNanjingChina School of Chemistry and Chemical Engineering Institute for Energy ResearchJiangsu UniversityZhenjiangChina Department of Chemistry and Chemical Biology Cornell UniversityIthacaNew YorkUSA

Novel N-doped Bi_(3)O_(4)Br/(BiO)_(2)CO_(3) ultrathin nanojunctions have been *** dehalogenation was performed to form Bi_(3)O_(4)Br,surfactant was employed to control the ultrathin thickness,and few-layers of C_(3)N_(4) as a sacrificial agent were used to build the N-doped(BiO)_(2)CO_(3).The photocatalytic behavior of the achieved N-doped Bi_(3)O_(4)Br/(BiO)_(2)CO_(3) ultrathin nanojunctions was evaluated through the degradation of antibiotic agent ciprofloxacin,tetracycline hydro-chloride,and endocrine disrupting chemical bisphenol A as well as typical dye rhodamine B under visible light *** matched energy band structure between Bi_(3)O_(4)Br and(BiO)_(2)CO_(3) could endow the highly efficient interfacial charge separation,thus leading to excellent nonselective photocatalytic *** structure design in this system will open new windows for the reasonable design of other photocatalysts.

关键词： (BiO)_(2)CO_(3) Bi_(3)O_(4)Br heterojunction photocatalytic ultrathin

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Transcription Factor KUA1 Positively Regulates Tomato Resistance Against Phytophthora infestans by Fine-tuning Reactive Oxygen Species Accumulation

Transcription Factor KUA1 Positively Regulates Tomato Resist...

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中国植物病理学会2024年学术年会

作者： WANG Zhicheng LV Ruili HONG Yuhui su Chenglin WANG Zhengjie LIU Jie MENG jun LUAN Yushi School of Bioengineering Dalian University of Technology Key Laboratory of Biotechnology and Bioresources Utilization Ministry of EducationInstitute of Plant ResourcesDalian Minzu University School of Computer Science and Technology Dalian University of Technology

Tomato is an essential horticultural and commercial crop,with effortlessly infecting by Phytophthora infestans during its whole growth period,which seriously restrict the quality and *** of transcription factors(TFs) have been reported to be involved in disease resistance,however,the key TFs in tomato resistant *** urgently need identified,the function and mechanism of the TFs remains ***,we identified six TFs related to tomato response ***,especially overexpression of SIKUA1 could significantly improve the tomato resistant to ***,moreover,ROS accumulation was significantly increased in over-expression individuals of SIKUA1 compared with wild type in normal condition due to higher relative expression level of ***,we found that SIKUA1 could not bind to the promoter of SIRBOHD,further results showed that SIKUA1 inhibited the expression of SIPrxl by binding to its promoter region,thereby reducing POD enzyme activity and causing ROS ***,we identified that SIKUA1 also binds to the promoter region of plant immune-related genes S1 MAPK7 and SIRLP4,activating their expression and enhancing tomato disease ***,these results unraveled that KUA1-mediated tomato against *** through regulating ROS accumulation and related immune gene expression,provided insights into tomato breeding for disease resistance.

关键词： tomato Phytophthora infestans transcription factor reactive oxygen species disease resistance

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中央民族大学佤族舞蹈课程“五点环线”模式的创建

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北京舞蹈学院学报 2024年第3期 123-130页

作者：李惠君苏自红中央民族大学舞蹈学院北京100081

中央民族大学佤族舞蹈课程“五点环线”模式是对民族舞蹈教学“三点一线”传统建设模式的深化与拓展,将民族“根文化”的内涵深植于民族舞蹈创作、教学、理论研究中。通过五个时空点,建构从“生活—广场”到“表演—舞台”,再到“教学... 详细信息

中央民族大学佤族舞蹈课程“五点环线”模式是对民族舞蹈教学“三点一线”传统建设模式的深化与拓展,将民族“根文化”的内涵深植于民族舞蹈创作、教学、理论研究中。通过五个时空点,建构从“生活—广场”到“表演—舞台”,再到“教学—课堂”,又到“表演—舞台”,最后回到“生活—广场”的循环模式。这一模式继承已有的“采风、整理、提炼、编排、教学、创作”的教材建设与教学环节,增加“表演—舞台”时空点的过程环节,强调基于民族舞蹈文化的舞台创作对舞蹈教材建设与教学、育人的重要性,旨在深化民族舞蹈教育内涵,推动民族文化的传承与创新,为舞蹈教育领域提供新的视角和方法。

关键词：民族‘根文化’ 五点环线返乡求证民族认同文化论证

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H形钢梁弯曲滞回性能研究与数值模拟优化

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塑性工程学报 2024年第5期31卷 179-187页

作者：田亚峰苏鹏勋董军伟内蒙古工业大学土木工程学院内蒙古呼和浩特010000 内蒙古工业大学土木工程结构与力学重点实验室内蒙古呼和浩特010000

为完善H形钢梁在纯弯曲荷载作用下的滞回性能的研究,对2类截面的H形钢梁增加一个多周滞回加载制度下的拟静力试验。此加载制度下的目标耗能量与此试件等幅升幅加载制度下达到峰值荷载时的总耗能量相等,因此对该试件的破坏模式、累积损... 详细信息

为完善H形钢梁在纯弯曲荷载作用下的滞回性能的研究,对2类截面的H形钢梁增加一个多周滞回加载制度下的拟静力试验。此加载制度下的目标耗能量与此试件等幅升幅加载制度下达到峰值荷载时的总耗能量相等,因此对该试件的破坏模式、累积损伤和耗能规律进行分析,验证了原设想中存在的不影响滞回耗能的阈值低于0.02 rad。同时进行了有限元对比分析,对此试验已有模型进行了精细化处理。有限元分析中利用热塑性方法模拟了试件焊接残余应力的变化过程,从而在模型加载过程中引入残余应力的影响,使试件的初始刚度、翼缘局部屈曲发生的时刻、极限荷载后刚度退化有显著改善。

关键词：局部屈曲纯弯曲 H形钢梁滞回有限元

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