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Recent progress in modelling and simulation technologies of energy efficiency and environmental quality in the built environment

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Building Simulation 2022年第7期15卷 1175-1176页

作者： wenhui ji Yanping Yuan Liangliang Sun Xudong Zhao School of Mechanical Engineering Southwest Jiaotong UniversityNo.111North Section 1Second Ring RoadChengdu 610031China University of Hull School Engineering and Computer ScienceKingston Upon Hull HU67RXN HumbersideUK

The International Conference for Global Chinese Academia on Energy and Built Environment(ICCEBE)is a premier international event covering a broad range of topics on clean energy utilization,energy efficiency and environmental quality in the built environment.The conference aims to provide a forum to share cutting-edge achievements in the built environment,and to promote academic collaboration and cooperation among worldwide Chinese scholars.

关键词： energy modelling collaboration

Pyrolysis,combustion,and fire spread characteristics of the railway train carriages:A review of development

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Energy and Built Environment

Energy and Built Environment 2023年第6期4卷 743-759页

作者： jidan Zhang wenhui ji Zhongyuan Yuan Yanping Yuan School of Mechanical Engineering Southwest Jiaotong UniversityChengdu 610031China

Fires in the railway trains are prone to cause large numbers of casualties,serious economic losses,and huge negative social impacts.The railway train carriage is a special confined built environment,where the pyrolysis,combustion,and fire spread process are different from those fire accidents in open space.Identifying the fire characteristics of the railway train carriages is the key issue to determine the fire prevention and control strategy.Therefore,this paper attempts to assess and identify the characteristics of pyrolysis,combustion,and fire spread of railway trains based on the exising research.This review documents the pyrolysis and combustion characteristics of single train material and the combustible module,summarizes the heat release rate(HRR)calculation methods and the HRR profile for different types of trains,as well as introduces the research progress in the flame spread and flashover.The main gaps and issues to be solved in terms of the effects of train speed,altitudes,and application of new energy trains are further discussed.

关键词： Fire safety Railway trains Pyrolysis Heat release rate Fire spread Flashover

基于弛豫时间分布和有限元模拟的环氧涂层渗水行为研究

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中国腐蚀与防护学报 2024年第2期44卷 489-496页

作者：韩东晓纪文会王通王巍北京航天新立科技有限公司北京100039 中国海洋大学材料科学与工程学院青岛266100

采用弛豫时间分布(DRT)技术和有限元模拟方法,从微观电化学角度分析研究了环氧涂层的渗水行为过程。结果表明:环氧涂层的渗水过程分为3个阶段:初始阶段、饱和阶段和失效阶段。3个阶段中,涂层内部水和腐蚀性介质的含量不同,会严重影响涂... 详细信息

采用弛豫时间分布(DRT)技术和有限元模拟方法,从微观电化学角度分析研究了环氧涂层的渗水行为过程。结果表明:环氧涂层的渗水过程分为3个阶段:初始阶段、饱和阶段和失效阶段。3个阶段中,涂层内部水和腐蚀性介质的含量不同,会严重影响涂层的电容变化。本文为有机防护涂层的机理研究提供了一种新的综合分析方法。

关键词：环氧涂层渗水弛豫时间分布有限元模拟腐蚀机理

农业生产托管影响粮农增收的机制及环节异质性

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中国农业大学学报 2024年第8期29卷 300-313页

作者：李亚娟唐文慧马骥中国农业大学资源与环境学院/国家农业绿色发展研究院北京100193 中国农业大学经济管理学院北京100083

农业生产托管是解决粮农既要种地又想务工的双重矛盾的重要手段,针对其对粮农家庭收入的影响及其作用机制的环节异质性尚不清楚这一问题,构建“农业生产托管-要素替代-粮农家庭收入”的理论框架,基于中国11省44县的2060份粮农数据,采用... 详细信息

农业生产托管是解决粮农既要种地又想务工的双重矛盾的重要手段,针对其对粮农家庭收入的影响及其作用机制的环节异质性尚不清楚这一问题,构建“农业生产托管-要素替代-粮农家庭收入”的理论框架,基于中国11省44县的2060份粮农数据,采用内生转换模型和中介效应模型,深入剖析农业生产托管对粮农家庭收入的影响及其内在机制。结果表明:(1)粮农的农业生产托管决策受托管特征、种植特征等内外部因素影响。(2)农业生产托管可以优化粮农家庭收入结构,提高收入水平。其中,工资性收入的平均处理效应>粮食种植性收入>转移性收入。(3)农业生产托管从劳动力分工和物质资本配置2个维度促进粮农增收,且存在环节异质性,其中,劳动力分工的中介效应>非劳动力要素配置。耕地、收储等劳动密集型环节托管主要经优化劳动力分工提高粮农收入,防治等技术密集型环节则主要通过优化物质资本配置促进增收。

关键词：农业生产托管环节异质性粮农家庭收入劳动力分工物质资本配置

Photosensitive hydrogels: from structure, mechanisms, design to bioapplications

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Science China(Life Sciences) 2020年第12期63卷 1813-1828页

作者： wenhui ji Qiong Wu Xisi Han Wei Zhang Wei Wei Liang Chen Lin Li Wei Huang Key Laboratory of Flexible Electronics(KLOFE)&Institute of Advanced Materials(IAM) Nanjing Tech UniversityNanjing 211800China Shaanxi Institute of Flexible Electronics Northwestern Polytechnical UniversityXi'an 710072China Department of General Surgery Jiangsu Cancer Hospital&Jiangsu Institute of Cancer Research&The Affiliated Cancer Hospital of Nanjing Medical UniversityNanjing 210009China

Hydrogel is a smart material with a three-dimensional network structure and has been widely used in various fields due to its good biodegradability, biocompatibility, and modification. Photosensitive hydrogel is a smart hydrogel, and its amenability to remote, precise control, and flexible and convenient regulation of stimulating factors make it an ideal candidate for use in fields such as biological materials, drug carriers, and sensors. In this review, we discuss the structure, mechanisms, design principles,and bioapplications of photosensitive hydrogels as developed in recent years. Finally, their potential for development and potential future challenges are outlined.

关键词： photosensitive hydrogels flexible bioapplications detection smart materials

Population genome of the newly discovered jinchuan yak to understand its adaptive evolution in extreme environments and generation mechanism of the multirib trait

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Integrative Zoology 2021年第5期16卷 685-695页

作者： Daoliang LAN wenhui ji Xianrong XIONG Qiqi LIANG Wenye YAO Tserang-Donko MIPAM jincheng ZHONG jian LI Ministry of Education of Key Laboratory of Qinghai-Tibet Plateau Animal Genetic Resource and Utilization Southwest Minzu UniversityChengduChina Institute of Qinghai-Tibetan Plateau Southwest Minzu UniversityChengduChina Novogene Bioinformatics Institute BeijingChina

The adaptation and diversity of animals to the extreme environments of the Qinghai–Tibet Plateau(QTP)are typical materials to study adaptive evolution.The recently discovered jinchuan yak population has many individuals with multiple ribs.However,little is known about this yak’s origin,evolution,and the genetic mechanisms that formed its unique multirib trait.Here,we report a valuable population genome resource of the jinchuan yak by resequencing the whole genome of 150 individuals.Population genetic polymorphism and structure analysis reveal that jinchuan yak can be differentiated as a unique and original yak population among the domestic yak.Combined with geological change,the jinchuan yak’s evolutionary origin is speculated to be about 6290 years ago,which may be related to the unique geographical environment of the eastern edge of the QTP during this period.Compared with other domestic yaks,this new population has 280 positively selected genes.The genes related to skeletal function hold a considerable and remarkable proportion,suggesting that the specific skeletal characteristics have been enhanced in the adaptive evolution of jinchuan yak in the extreme plateau environment.The genome-wide association study has revealed that TUBA8 and TUBA4A,the genes that regulate the cytoskeleton,are potential genes associated with the multirib trait.Our findings provide a basis to further understand the generation mechanism of the adaptive evolution of this new population in high-altitude extreme environments and the multivertebrate trait of domestic animals.

关键词： adaptive evolution genetic mechanism multirib trait Qinghai-Tibet Plateau yak

外放疗联合仑伐替尼和卡瑞利珠单抗治疗不可切除肝癌的疗效与安全性评价

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中国肿瘤 2024年第5期33卷 420-427页

作者：季洪兵潘建基刘文晖福建医科大学孟超肝胆医院福建福州350028 福建省肿瘤医院福建福州350014

[目的]评价外放疗联合仑伐替尼和卡瑞利珠单抗治疗不可切除肝细胞癌(HCC)的疗效和安全性。[方法]回顾性分析福建医科大学孟超肝胆医院2018年5月1日至2021年3月1日收治85例不可切除的HCC病例,30例不可切除的HCC患者纳入外放疗联合仑伐替... 详细信息

[目的]评价外放疗联合仑伐替尼和卡瑞利珠单抗治疗不可切除肝细胞癌(HCC)的疗效和安全性。[方法]回顾性分析福建医科大学孟超肝胆医院2018年5月1日至2021年3月1日收治85例不可切除的HCC病例,30例不可切除的HCC患者纳入外放疗联合仑伐替尼和卡瑞利珠单抗组(RT+LC),55例纳入仑伐替尼和卡瑞利珠单抗组(LC)。主要研究终点为无进展生存期(PFS)和总生存期(OS)。次要研究终点包括根据改良的实体肿瘤反应评估标准评估肿瘤治疗反应,以及采用不良事件通用术语标准5.0评估的治疗相关不良事件(TRAEs)。采用单因素和多因素Cox回归分析来确定独立的预后因素。[结果]RT+LC组和LC组的中位PFS分别为11.61个月和7.25个月(P=0.036)。RT+LC组和LC组的中位OS分别为20.07个月和12.03个月(P=0.019)。Cox回归分析显示,联合RT是PFS和OS的独立因素(P均0.05),安全性相当。[结论]外放疗联合仑伐替尼和卡瑞利珠单抗治疗不可切除HCC临床效果显著,不良反应可控,是一种安全、有效的治疗方法。

关键词：肝细胞癌放射治疗仑伐替尼卡瑞利珠单抗

排风口位置对竖壁贴附射流夜间通风降温效果影响的分析

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制冷与空调（四川） 2024年第1期38卷 1-9页

作者：季文慧李亚军西南交通大学机械工程学院成都610031

针对成都地区气候特征,开展排风口位置对竖壁贴附射流夜间通风降温效果的分析。选取夏季典型日气象参数进行数值模拟,针对s/b=2,送风速度为4m/s,分析上部排风和下部排风对室内速度场和温度场的影响。上排风和下排风对竖壁贴附区速度场... 详细信息

针对成都地区气候特征,开展排风口位置对竖壁贴附射流夜间通风降温效果的分析。选取夏季典型日气象参数进行数值模拟,针对s/b=2,送风速度为4m/s,分析上部排风和下部排风对室内速度场和温度场的影响。上排风和下排风对竖壁贴附区速度场无明显影响,但是下排风情况下水平贴附区射流主体性保持较好,水平空气湖区速度较大。上排风模式下射流沿着壁面继续向上“攀附”一段距离,对贴附墙体降温效果更好。

关键词：贴壁射流夜间通风排风口位置降温效率

Wall-Attached Night Ventilation Combined with Phase Change Material Wallboard in Hot Summer:An Experimental Study on the Thermal Performance

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Journal of Thermal Science 2022年第2期31卷 318-331页

作者： ji wenhui YUAN Yanping LI Yajun YU Min School of Mechanical Engineering Southwest Jiaotong UniversityChengdu 610031China

Night ventilation is regarded as a promising cooling strategy by storing night cooling in the thermal mass of the building.However,night ventilation performance in hot summer is restricted by the climatic limits.In this paper,we propose a new solution as the integration of wall-attached night ventilation(WANV)and phase change material wallboard(PCMW).The principle of the proposed system is to utilize the wall-attached jet ventilation to achieve forced convection and to adopt latent energy storage of PCMW to enlarge the energy storage density capabilities,and the coupling method is expected to improve the night ventilation performance.Comparative experiments were conducted to evaluate the thermal performance of the hybrid system by evaluating indoor temperature history,thermal comfort time and cooling efficiency.Due to the high thermal energy storage density capability of PCMW,it was found that the presence of PCMW has a negative influence on night cooling efficiency but still has a positive influence on the overall cooling effect.The proposed WANV combined with the PCMW system significantly increased the temperature decrease of room air and west wall inside surface during one hour's night ventilation by 94.97%and 67.74%,respectively,and reached an extension of 38.42%of indoor thermal comfort time.The results highlight the potential of WANV integration of PCMW to improve the thermal performance of night ventilation.

关键词： night ventilation wall-attached jet ventilation phase change material wallboard thermal performance