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Particuology 2024年第8期91卷 19-28页

作者： Wei Liu Daoyin Liu Zuyang Zhang zhenkun sun Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy&EnvironmentSoutheast UniversityNanjing 210096China

Fluidized bed atomic layer deposition is an efficient technique for particle coating with precise control over the film thickness and uniformity at the *** this study,a fluidized bed with a central tube is designed,where the central tube has two roles:improve fluidization and deliver precursors *** synthesis of core-shell structured SiO_(2)/TiO_(2)nanoparticle catalysts for photodegradation of tetracycline hydrochloride(TC)is carried out using TiCl_(4)and H_(2)O as precursors at 180℃under atmospheric *** the combination of vibration and central tube,the segregation of agglomerate size along the bed height is weakened,and the prepared SiO_(2)/TiO_(2)nanoparticles show excellent photocatalytic degradation performance:the degradation efficiency on TC is 96%under 300 W xenon lamp irradiation for 60 *** mechanism of enhanced photocatalytic activity is due to the Ti-O-Si bonds generated at the interface,which increase the ability to absorb sunlight and accelerate the separation of holes and electrons.

关键词： SiO_(2)/TiO_(2)nanoparticles Fluidization Atomic layer deposition Photocatalysts Photocatalytic mechanism

Peak-Shaving of the Oxy-Fuel Power Plant Coupled with Liquid O_(2)Storage

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热科学学报:英文版 2023年第5期32卷 1722-1736页

作者： FU Xuchen WU Jianwen sun zhenkun DUAN Yuanqiang GAO Zhengping DUAN Lunbo Key Laboratory of Energy Thermal Conversion and Control Ministry of EducationSchool of Energy and EnvironmentSoutheast UniversityNanjing 210096China Inner Mongolia Power Research Institute Branch Inner Mongolia Power(Group)Co.Ltd.Huhhot 010020China

Integrating a high proportion of intermittent renewable energy provides a solution for the higher peak-shaving capacity of coal-fired power ***-fuel combustion is one of the most promising carbon reduction technologies for coal-fired power *** study has proposed a novel oxy-fuel power plant that is coupled with both liquid O_(2)storage and cold energy recovery systems in order to adapt to the peak-shaving *** liquid O_(2)storage system uses cheap valley electricity to produce liquid O_(2)for a later use in the peak period to enhance the peak-shaving ***,the cold energy recovery system has been introduced to recover the physical latent energy during the phase change of liquid O_(2)to increase the power generation in the peak *** economies of three power plants,i.e.a 330 MW(e)oxy-fuel power plant as reference(Case 1),the same power plant coupled with only liquid O_(2)storage system(Case 2),and the same power plant coupled with both liquid O_(2)storage and cold energy recovery systems(Case 3),have been analyzed and *** performance analysis indicates that the peaking capacity of Case 3 can reach the range of 106.03 to 294.22 MW(e),and the maximum peak-shaving coefficient can be as high as *** analysis demonstrates that the gross exergy efficiency of Cases 2 and 3 reaches 32.18%and 33.57%,respectively,in the peak period,which are significantly higher than that of 26.70%in Case *** analysis shows that through selling the liquid O_(2)and liquid CO_(2),combined with carbon trading,the levelized cost of electricity(LCOE)of the three cases have been greatly reduced,with the lowest one of 30.90 USD/MWh shown in Case *** a comprehensive consideration,Case 3 can be considered a future reference of oxy-fuel power plant with the best thermodynamic and economic performance.

关键词： oxy-fuel peak-shaving liquid O_(2)storage cold energy recovery

Induction heating enables efficient heterogeneous catalytic reactions over superparamagnetic nanocatalysts

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中国化学快报:英文版 2023年第9期34卷 329-334页

作者： Chao Huang Yu Wang Rui Zhong zhenkun sun Yonghui Deng Lunbo Duan Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and EnvironmentSoutheast UniversityNanjing 210096China Key Laboratory of Functional Molecular Solids Ministry of EducationAnhui Key Laboratory of Molecule-Based MaterialsCollege of Chemistry and Materials ScienceAnhui Normal UniversityWuhu 241002China Department of Chemistry State Key Laboratory of Molecular Engineering of PolymersFudan UniversityShanghai 200433China

Most catalytic processes are achieved by heating the whole reaction systems including the entire reactor,substrate and solvent,which leads to energy loss and obvious heat transfer *** this study,induction heating was employed to boost the catalytic Suzuki-Miyaura cross-coupling reactions by using conductive superparamagnetic microspheres with loaded Pd nanoparticles as heterogeneous *** was found that,at the same apparent reaction temperatures,the reactions by adopting the induction heating all exhibit better catalytic performance with higher conversion and yield,as compared to the reactions using conventional joule *** improvement is mainly attributed to the localized heating effect endowed by high efficiency of the heat transfer from the heat source to catalytic sites,which dissipates the electromagnetic energy through Néel relaxation ***,it has be found that the reactions have been largely accelerated,resulting in much shorter reaction time required to approach a given value of reactant *** results indicate that the unique heating method based on the superparamagnetic nanomaterials as both the inductive component and catalyst support holds a promising application for fast and efficient heterogeneous catalytic process,and exhibits potential for improving energy transfer efficiency and reducing the side reactions attributed to the uneven temperature profile.

关键词： Induction heating Magnetic particles Cross-coupling reaction Heterogeneous catalysis Core-shell

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酿酒稻壳水分检测方法对比研究

酿酒 2024年第1期51卷 60-62页

作者：闫闫孟晴刘国英马雷孙珍坤汤有宏安徽古井贡酒股份有限公司安徽亳州236820

通过研究不同温度下卤素快速干燥法与GB/T5497粮食、油料检验水分测定法中定温定时烘干法,分别检测10个不同稻壳样品水分值,发现两种检测方法测得值相近且误差满足标准要求。从综合对比分析结果来看,卤素快速干燥法具有准确度高、稳定... 详细信息

通过研究不同温度下卤素快速干燥法与GB/T5497粮食、油料检验水分测定法中定温定时烘干法,分别检测10个不同稻壳样品水分值,发现两种检测方法测得值相近且误差满足标准要求。从综合对比分析结果来看,卤素快速干燥法具有准确度高、稳定性强、检测速度快、操作简单和使用成本较低等优点。

关键词：稻壳水分卤素快速干燥法烘箱干燥法

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鸡蛋自动上料装置机构分析与试验

农业机械学报 2018年第1期49卷 352-357页

作者：王树才陈子琦孙振坤马美湖华中农业大学工学院武汉430070 华中农业大学食品科技学院武汉430070

为了优化鸡蛋加工生产线吸盘自动上料装置的结构参数,并确定样机安装中关键零部件同步位置,对该装置的核心部分——吸盘摆臂组合机构进行了结构分析和运动仿真。结果表明:由曲柄摇杆、齿轮和同步带串联组合的吸盘摆臂组合机构自由度为1... 详细信息

为了优化鸡蛋加工生产线吸盘自动上料装置的结构参数,并确定样机安装中关键零部件同步位置,对该装置的核心部分——吸盘摆臂组合机构进行了结构分析和运动仿真。结果表明:由曲柄摇杆、齿轮和同步带串联组合的吸盘摆臂组合机构自由度为1、曲柄整周转动、摇杆往复摆动60°、摆臂往复摆动180°;同步带角度补偿可以保证在摆臂180°摆动中,吸盘组件始终处于水平状态,保证鸡蛋水平搬运;摆臂末端运动参数(位移、速度、加速度)变化曲线显示,当摇杆摆动到2个极位146°和206°附近时,摆臂存在一段水平速度为零的垂直上下运动,分别对应曲柄84°~108°和252°~312°,以确保吸蛋和放蛋时吸盘垂直运动;为了保证该装置同步协调运动,样机安装时必须使曲柄在96°时,摇杆处在146°、摆臂处在174°位置。样机试验表明:理论分析和仿真结果与样机实测值一致性较好。

关键词：鸡蛋自动上料装置仿真试验

关于阿德福韦酯与拉米夫定治疗乙型肝炎肝硬化的疗效研究

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中国卫生产业 2014年第20期11卷 15-16页

作者：孙振坤商丘市第一人民医院分院传染二科河南商丘476100

目的分析拉米夫定与阿德福韦酯治疗乙型肝炎肝硬化患者的临床疗效。方法患者入院治疗后均给予对症治疗、护肝及保肝等常规治疗,采用拉米夫定治疗A组患者,剂量为100 mg/d;采用阿德福韦酯治疗B组患者,剂量为10mg/d;联合应用阿德福韦酯与... 详细信息

目的分析拉米夫定与阿德福韦酯治疗乙型肝炎肝硬化患者的临床疗效。方法患者入院治疗后均给予对症治疗、护肝及保肝等常规治疗,采用拉米夫定治疗A组患者,剂量为100 mg/d;采用阿德福韦酯治疗B组患者,剂量为10mg/d;联合应用阿德福韦酯与拉米夫定治疗C组患者,拉米夫定剂量为100 mg/d,阿德福韦酯为10mg/d。结果 C组HBV DNA水平与A组及B组相比存在显著性差异(P<0.05);C组HBV DNA的转阴率也明显高于A组及B组,且存在显著性差异(P<0.05)。C组的肝功能明显优于A组及B组(P<0.05)。结论联合阿德福韦酯与拉米夫定治疗肝硬化的临床疗效显著,可推广应用。

关键词：肝硬化乙型肝炎拉米夫定阿德福韦酯疗效

比较分析奥曲肽、垂体后叶素治疗肝硬化上消化道出血的疗效

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中外医疗 2014年第19期33卷 21-22页

作者：孙振坤商丘市第一人民医院分院传染二科河南商丘476100

目的对比分别应用奥曲肽与垂体后叶素对肝硬化上消化道出血患者进行治疗可以取得的临床疗效。方法选取该院近来3年收治的肝硬化上消化道出血患者200例,随机将其分为A、B两组,对比A、B两组患者的临床疗效。结果 A组患者的总有效率为99%,... 详细信息

目的对比分别应用奥曲肽与垂体后叶素对肝硬化上消化道出血患者进行治疗可以取得的临床疗效。方法选取该院近来3年收治的肝硬化上消化道出血患者200例,随机将其分为A、B两组,对比A、B两组患者的临床疗效。结果 A组患者的总有效率为99%,B组患者的总有效率为70%,A组临床疗效显著优于B组,此外,A组患者不良反应发生率为5%,B组患者的不良反应发生率为52%,A组明显低于B组,两者的差异有统计学意义(P<0.05)。结论应用奥曲肽对肝硬化上消化道出血患者进行治疗,其临床疗效明显优于垂体后叶素,并且不良反应出现几率也很低,值得各大医院推广应用。

关键词：奥曲肽垂体后叶素肝硬化上消化道出血临床疗效对比

基于改进型人工鱼群算法的WSN覆盖优化研究

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科技通报 2013年第11期29卷 115-118,152页

作者：孙振坤于大为沈金龙苏州信息职业技术学院江苏吴江215200

在无线传感网络中,有效覆盖和能耗是衡量性能的最重要的两个指标,通过建立网络覆盖优化的数学模型,通过在人工鱼群算法的觅食行为中引入混沌算法来减少行为的不确定性,在聚群行为中引入多样性的概念来避免了人工鱼群的拥挤。通过仿真实... 详细信息

在无线传感网络中,有效覆盖和能耗是衡量性能的最重要的两个指标,通过建立网络覆盖优化的数学模型,通过在人工鱼群算法的觅食行为中引入混沌算法来减少行为的不确定性,在聚群行为中引入多样性的概念来避免了人工鱼群的拥挤。通过仿真实验表明,该算法能求解最优覆盖工作节点,有效的延长整个网络的生命周期,缩短传输时延。

关键词：无线传感网络混沌人工鱼群算法优化

基于MATLAB GUI的氢气膜分离虚拟仿真实验平台设计

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实验技术与管理 2023年第4期40卷 138-143页

作者：边洲峰王志刚邵华孙镇坤东南大学能源与环境学院江苏南京210096 天津工业大学化学工程与技术学院天津300387 上海交通大学机械与动力工程学院上海200240

为提高氢能利用课程中氢气膜分离知识点的教学效果,使用MATLAB图形用户界面(graphical user interface,GUI)开发了氢气膜分离虚拟仿真实验平台。学生可自定义膜组件尺寸、物理参数等进行虚拟实验,计算得到氢气渗透总量和膜组件内氢气流... 详细信息

为提高氢能利用课程中氢气膜分离知识点的教学效果,使用MATLAB图形用户界面(graphical user interface,GUI)开发了氢气膜分离虚拟仿真实验平台。学生可自定义膜组件尺寸、物理参数等进行虚拟实验,计算得到氢气渗透总量和膜组件内氢气流率变化的曲线,直观地观察膜长度、渗透系数和压力等因素对氢气膜分离效果的影响作用。该虚拟仿真实验平台有助于学生对于氢气膜分离模型的理解,提升了教学质量。

关键词：氢能利用膜分离仿真实验 MATLAB GUI

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铁路数字调度通信系统维修及故障分析

铁道通信信号 2009年第2期45卷 56-58页

作者：孙振坤李世堂吴刚兖矿集团铁运处电务段山东邹城工程师273500

铁路数字调度通信系统是铁路运输指挥的重要手段,系统故障将影响各类调度、行车命令的有效传达,对铁路运输的安全与效率造成影响。结合实际应用中遇到的各类故障情况,对铁路数字调度系统的故障原因及维护方法做一简单分析与介绍。

关键词：铁路数字调度通信故障安全与效率