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Frontiers of Chemical Science and Engineering 2021年第5期15卷 1088-1098页

作者： Hui Shang Chong Guo pengfei ye Wenhui Zhang State Key Laboratory of Heavy Oil Processing China University of Petroleum(Beijing)Beijing102249China

Catalytic hydrodesulfurization(HDS)technique is widely used for clean gasoline production.However,traditional HDS catalyst(CoMo/γ-Al_(2)O_(3))exhibits high hydrogenation performance of olefins(HYDO),resulting in the loss of gasoline octane number.To achieve high HDS/HYDO ratio,the key issue is to reduce the interaction between active metals and the support,therefore,in this research,the modified CoMo/γ-Al_(2)O_(3)catalysts with various boron amounts were investigated under traditional or microwave heating.The effects of preparing methods as well as boron amounts on the active phase,acidic properties and HDS catalytic activities were examined.Results show that the modification,especially under microwave treatment,can significantly weaken the interaction between the active component and the support by enlarging the surface area and pore diameter,and reducing the acidity of the support.As a result,the stacking numbers of MoS_(2) slabs were obviously improved by the modification and microwave treatment,contributing to higher edge/rim ratio,and resulting in higher HDS performance and selectivity to olefin.

关键词： CoMo catalyst boron modification surface acidity microwave heating selective hydrodesulfurization

Pure Red Cell Aplasia Caused by Parvovirus B19 in Patients with Human Immunodeficiency Virus Infection: A Series of Four Cases

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Infectious Diseases & Immunity 2023年第3期3卷 132-135页

作者： Feilong Xu Yulong Wang Linjin Fan Yaozu He Xiejie Chen pengfei ye Linna Liu Jun Qian Linghua Li Guangzhou Eighth People’s Hospital Guangzhou Medical UniversityGuangzhou 510060China Zhongshan School of Medicine Sun Yat-sen UniversityGuangzhou 510060China Key Laboratory of Tropical Disease Control(Sun Yat-sen University) Ministry of EducationGuangzhou 510060China

Parvovirus B19(B19V)infection can cause pure red cell aplasia(PRCA)in patients with human immunodeficiency virus(HIV)infection.Intravenous immunoglobulin(IVIG)is a preferred treatment option.From July 2019 to March 2022,four patients with HIV infection were admitted to Guangzhou Eighth People’s Hospital with dizziness and fatigue and were diagnosed with PRCA.Blood investigations revealed severe anemia and the B19V genome.Therefore,the four patients were diagnosed with B19V-induced PRCA.All four patients received red blood cell transfusion in the setting of antiretroviral therapy,and two of the four patients received intravenous immunoglobulin(IVIG).After 3-7 months of treatment,all four patients recovered,although two did not receive IVIG.This suggests that IVIG is not always necessary for the treatment of PRCA in patients with HIV infection and that effective antiretroviral therapy and immunological reconstitution play an important role in the eradication of parvovirus.

关键词： Acquired immunodeficiency syndrome Antiretroviral therapy HIV Intravenous immunoglobulin Parvovirus B19 Pure red cell aplasia

Fast and Stable Surface Feature Simulation for Particle-Based Fluids

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Journal of Beijing Institute of Technology 2019年第1期28卷 57-66页

作者： Xiaokun Wang Yanrui Xu Xiaojuan Ban pengfei ye School of Computer and Communication Engineering University of Science and Technology Beijing Beijing Key Laboratory of Knowledge Engineering for Materials Science

In order to efficiently and realistically capture microscopic features of fluid surface,a fast and stable surface feature simulation approach for particle-based fluids is presented in this paper.This method employs a steady tension and adhesion model to construct surface features with the consideration of the adsorption effect of fluid to solid.Molecular cohesion and surface area minimization are appended for surface tension,and adhesion is added to better show the microscopic characteristics of fluid surface.Besides,the model is integrated to an implicit incompressible smoothed particle hydrodynamics(SPH)method to improve the efficiency and stability of simulation.The experimental results demonstrate that the method can better simulates surface features in a variety of scenarios stably and efficiently.

关键词： virtual reality 3D visualization fluid simulation surface feature

Experimental and theoretical study of microwave enhanced catalytic hydrodesulfurization of thiophene in a continuous-flow reactor

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Frontiers of Chemical Science and Engineering 2019年第4期13卷 744-758页

作者： Hui Shang pengfei ye Yude Yue Tianye Wang Wenhui Zhang Sainab Omar Jiawei Wang State Key Laboratoiy of Heavy Oil Processing China University of Petroleum(Beijing)Beijing 102249China European Biocncrgy Research Institute Aston UniversityBirminghamB47ETUK

Hydrodesulfiirization(HDS)of thiophene,as a gasoline model oil,over an industrial Ni-Mo/Al2O3 catalyst was investigated in a continuous system under microwave irradiation.The HDS efficiency was much higher(5%-14%)under microwave irradiation than conventional heating.It was proved that the reaction was enhanced by both microwave thermal and non-thermal effects.Microwave selective heating caused hot spots inside the catalyst,thus improved the reaction rate.From the analysis of the non-thermal effect,the molecular collisions were significantly increased under microwave irradiation.However,instead of being reduced,the apparent activation energy increased.This may be due to the microwave treatment hindering the adsorption though upright S-bind(η1)and enhancing the parallel adsorption(η5),both adsorptions were considered to favor to the direct desulfurization route and the hydrogenation route respectively.Therefore,the HDS process was considered to proceed along the hydrogenation route under microwave irradiation.

关键词： thiophene microwave irradiation hydrodesulfurization non-thermal microwave effect

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曲靖职业院校双师型教师现状及发展对策研究

科教导刊 2024年第2期 75-79页

作者：周杰杨国盟叶朋飞曲靖职业技术学院现代农业系云南曲靖655000

文章阐述了双师型教师的内涵,从年龄结构、职称结构和学历结构三个方面调查分析了曲靖职业院校双师型教师的现状,提出曲靖职业院校双师型教师队伍建设存在认证标准不明确,培养政策体系不健全,数量、年龄、职称结构、学历结构不合理,缺... 详细信息

文章阐述了双师型教师的内涵,从年龄结构、职称结构和学历结构三个方面调查分析了曲靖职业院校双师型教师的现状,提出曲靖职业院校双师型教师队伍建设存在认证标准不明确,培养政策体系不健全,数量、年龄、职称结构、学历结构不合理,缺乏长远师资培养规划,教师专业化发展意识不高等问题。从政府、学校、教师三个层面提出了曲靖职业院校双师型教师发展的对策。

关键词：曲靖职业院校双师型

Intake of tobacco nitrosamines of smokers in various provinces of China and their cancer risk:A meta-analysis

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Journal of Environmental Sciences 2024年第7期141卷 249-260页

作者： Xiao Li Zhiwei ye Jun Wang pengfei Lin Xiaojin Zhang Shuguang Xie Chao Chen Research Institute for Environmental Innovation(Suzhou) TsinghuaSuzhouJiangsu 215163China State Key Joint Laboratory of Environmental Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Shenzhen Key Laboratory of Organic Pollution Prevention and Control State Key Laboratory of Urban Water Resource and EnvironmentHarbin Institute of TechnologyShenzhen 518055China State Key Joint Laboratory of Environmental Simulation and Pollution Control College of Environmental Science and EngineeringPeking UniversityBeijing 100871China

Nitrosamines are a class of carcinogens which have been detected widely in food,water,some pharmaceuticals as well as tobacco.The objectives of this paper include reviewing the basic information on tobacco consumption and nitrosamine contents,and assessing the health risks of tobacco nitrosamines exposure to Chinese smokers.We searched the publications in English from“Web of Science”and those in Chinese from the“China National Knowledge Infrastructure”in 2022 and collected 151 literatures with valid information.The content of main nitrosamines in tobacco,including 4-(methylnitrosoamino)-1-(3-pyridyl)-1-butanone(NNK),N-nitrosonornicotine(NNN),N-nitrosoanatabine(NAT),N-nitrosoanabasine(NAB),total tobacco-specific nitrosamines(TSNA),and N-nitrosodimethylamine(NDMA)were summarized.The information of daily tobacco consumption of smokers in 30 provinces of China was also collected.Then,the intakes of NNN,NNK,NAT,NAB,TSNAs,and NDMA via tobacco smoke were estimated as 1534ng/day,591 ng/day,685 ng/day,81 ng/day,2543 ng/day,and 484 ng/day by adult smokers in30 provinces,respectively.The cancer risk(CR)values for NNN and NNK inhalation intake were further calculated as 1.44×10^(-5)and 1.95×10^(-4).The CR value for NDMA intake via tobacco smoke(inhalation:1.66×10^(-4))indicates that NDMA is similarly dangerous in tobacco smoke when compared with the TSNAs.In China,the CR values caused by average nitrosamines intake via various exposures and their order can be estimated as the following:smoke(3.75×10^(-4))>food(1.74×10^(-4))>drinking water(1.38×10^(-5)).Smokers in China averagely suffer 200%of extra cancer risk caused by nitrosamines in tobacco when compared with non-smokers.

关键词： N-nitrosamine Tobacco Cancer risk Tobacco specific nitrosamines(TSNAs) N-nitrosodimethylamine(NDMA)

基于CoRefine的公路车载三维激光雷达点云预处理

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测绘与空间地理信息 2024年第1期47卷 216-218页

作者：倪愿易菊平叶朋飞易守东四川省公路规划勘察设计研究院有限公司四川成都610041

公路车载三维激光雷达点云在预处理过程中通常需要处理分层和位置不准确等难题。CoRefine软件刺点方式灵活,预处理步骤简单,可根据公路特点分别进行相对和绝对位置的校正,并通过验证高程差值,得出校正后数据的偏差集中在误差较小处,最... 详细信息

公路车载三维激光雷达点云在预处理过程中通常需要处理分层和位置不准确等难题。CoRefine软件刺点方式灵活,预处理步骤简单,可根据公路特点分别进行相对和绝对位置的校正,并通过验证高程差值,得出校正后数据的偏差集中在误差较小处,最终获取得到精度较高的道路点云数据。

关键词： CoRefine 公路点云校正

不同规范化培训体系下住院医师科研意识及能力的问卷调查研究

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中国高等医学教育 2024年第2期 44-46页

作者：许华燕叶鹏飞黄波谢林均郭应坤四川大学华西第二医院四川大学华西口腔医学院四川成都610041

目的:调查住院医师在培期间的科研意识和科研能力,为优化规范化培训体系、培养兼具临床及科研能力的医学人才提供参考。方法:本研究采用问卷调查形式,调查了中国不同地区19个住培基地192名(双轨制116名,非双轨制76名)在培住院医师,分析... 详细信息

目的:调查住院医师在培期间的科研意识和科研能力,为优化规范化培训体系、培养兼具临床及科研能力的医学人才提供参考。方法:本研究采用问卷调查形式,调查了中国不同地区19个住培基地192名(双轨制116名,非双轨制76名)在培住院医师,分析不同培养体系下在培住院医师的科研意识和科研能力。结果:科研意识调查显示,86.21%的双轨制住院医师会自主学习文献,大部分每周有超过1天时间用于科研;而对非双轨制住院医师,仅53.95%会自主学习文献,76.32%每周用于科研时间不足1天。针对科研能力研究,双轨制住院医师中参加科研项目、论文撰写的比例高于非双轨制住院医师,双轨制住院医师知道科研论文结构和如何撰写论文、会使用中英文数据库和进行常规科研统计的比例均高于非双轨制培养住院医师(P<0.05)。92.10%非双轨制住院医师表示愿意参加科研,但大部分非双轨制学生不知道科研方法。结论:不同培养体系的住院医师其科研意识和能力存在差异,双轨制住院医师科研能力高于非双轨制住院医师,非双轨制住院医师具有较高的科研意愿,但缺乏科研方法及科研实践。

关键词：住院医师科研意识科研能力调查研究

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矿山生态恢复治理现状及对策分析

工程建设（维泽科技） 2024年第6期7卷 80-82页

作者：武金桃叶鹏飞郭红宾杜小晴陈琪河北地矿建设工程集团有限责任公司河北石家庄050081

矿山生态恢复治理是当前环境保护和可持续发展的重要课题。随着矿产资源的开采和利用,矿山环境遭受严重破坏,给生态系统和人类社会带来巨大影响。因此,研究矿山生态恢复治理的现状和对策,具有重要的理论和实践意义。文中通过对矿山生态... 详细信息

矿山生态恢复治理是当前环境保护和可持续发展的重要课题。随着矿产资源的开采和利用,矿山环境遭受严重破坏,给生态系统和人类社会带来巨大影响。因此,研究矿山生态恢复治理的现状和对策,具有重要的理论和实践意义。文中通过对矿山生态恢复治理现状的分析,了解目前存在问题现状,通过对矿山生态恢复治理的对策研究,提出科学有效的措施和方法,指导实际工作的开展。

关键词：矿山生态恢复治理现状分析对策分析

心肌灌注成像联合增强CT评估心肌缺血患者再灌注损伤的价值

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河南医学研究 2024年第3期33卷 550-554页

作者：夏宾叶鹏飞邵祎炜李俊杰李宇庆平顶山市第一人民医院CT室河南平顶山467000

目的探讨心肌灌注成像联合增强CT评估心肌缺血患者发生再灌注损伤的价值。方法回顾性收集2020年10月至2022年10月平顶山市第一人民医院收治的80例心肌缺血患者临床资料,依据心肌缺血再灌注损伤发生情况将80例患者资料分为损伤组(28例... 详细信息

目的探讨心肌灌注成像联合增强CT评估心肌缺血患者发生再灌注损伤的价值。方法回顾性收集2020年10月至2022年10月平顶山市第一人民医院收治的80例心肌缺血患者临床资料,依据心肌缺血再灌注损伤发生情况将80例患者资料分为损伤组(28例)与未损伤组(52例),所有患者均于经皮冠状动脉介入治疗(PCI)前接受心肌灌注成像联合增强CT检查。对比两组心肌灌注成像及增强CT指标,并绘制受试者工作特征(ROC)曲线评估心肌灌注成像、增强CT单独及联合评估心肌缺血患者再灌注损伤的价值。结果损伤组左室收缩末期容积、左室舒张末期容积均高于未损伤组,差异具有统计学意义(P0.7,具有一定的预测价值,且联合预测价值更高。结论心肌灌注成像联合增强CT可准确评估心肌缺血患者再灌注损伤情况。

关键词：心肌缺血再灌注损伤心肌灌注成像增强CT