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A cellular automaton evacuation model based on mobile robot's behaviors

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Chinese Science Bulletin 2007年第5期52卷 680-684页

作者： WENG WenGuo YUAN hongyong fan WeiCheng Center for Public Safety Research Department of Engineering Physics Tsinghua University Beijing 100084 China

The research of evacuation in some emergencies, e.g. fire, is of great benefit to reducing the injuries of persons. In this paper, a cellular automaton evacuation model based on mobile robot's behaviors is presented. Each person is treated as an intelligent mobile robot, and motor schemas, including move-to-goal, avoid-obstacle, swirl-obstacle and nervous-motion, drive persons to interact with their environment. The motor schemas are combined with cellular automaton theory, and an evacuation model is built. Evacuation simulation of persons with different move velocities shows that the pre-sented model can predict accurately the evacuation phenomena in some emergencies.

关键词：移动机器人行为细胞自动机理论人员撤离人员安全灾害事故

Influence of hydraulic retention time on behavior of antibiotics and antibiotic resistance genes in aerobic granular reactor treating biogas slurry

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Frontiers of Environmental Science & Engineering 2019年第3期13卷 59-67页

作者： Jie Liao Chaoxiang Liu Lin Liu Jie Li hongyong fan Jiaqi Ye Zhichao Zeng Key Laboratory of Environmental Biotechnology Fujian Province University Xiamen University of Technology Xiamen 361024 China Key Laboratory of Urban Pollutant Conversion Institute of Urban Environment Chinese Academy of Sciences Xiamen 361021 China Fujian Institute of Innovation Chinese Academy of Sciences Fuzhou 350002 China

The behavior of antibiotics and the corresponding resistance genes in aerobic granular reactors for treating biogas slurry under different hydraulic retention times (10.7 h, Rl;8 h, R2) was investigated in this study. The results indicated that the hydraulic retention time could affect the effluent concentrations and removal efficiencies of sulfonamides. The average removal rates of tetracyclines, fluoroquinolones, and sulfonamides were 63%, 46%, and 90% in Rl, and 62%, 46%, and 86% in R2, respectively. Although the removal efficiencies of tetracyclines and fluoroquinolones were similar in both reactors, the respective accumulated concentrations of tetracyclines and fluoroquinolones in R1 were 7.00 and 11.15μg/g SS, which were lower than those in R2 (8.92 and 13.37μg/g SS, respectively). The difference in the relative abundance of target antibiotic resistance genes between both reactors was not significant, yet the average relative abundances of all target resistance genes in R1 were higher than those in R2 after 45 days of operation. The results of this study suggested that a longer hydraulic retention time could enhance the antibiotic removal ability of aerobic granular sludge, yet it may also increase the risk of surplus sludge utilization from a resistance genes point of view.

关键词： Aerobic granules Swine wastewater Tetracyclines Fluoroquinolones Sulfonamides

Effect of a Carbon Fibre-steel Fibre-graphite Conductive Filler on the Electrothermal Properties of Cementitious Materials

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 141-151页

作者： fan Yanan WEI Hong ZHENG hongyong DU Hongxiu Department of Architecture and Environmental Engineering Taiyuan UniversityTaiyuan 030032China College of Civil Engineering Taiyuan University of TechnologyTaiyuan 030032China

Carbon fibre,steel fibre and graphite were used as conductive fillers to prepare cementitious materials with excellent electrothermal *** electrically conductive cementitious materials with different volume dosages were analysed through compressive and flexural strength,electrochemical impedance spectroscopy and temperature rise *** equivalent circuit model was established to study the electrically conductive heat generation mechanism in the electrically conductive cementitious *** results indicate that the mechanical properties of cementitious composite materials with a ternary conductive phase are better than those of pristine cementitious materials because the fibrous filler improves their mechanical ***,the incorporation of graphite in the material reduces its *** fibrous and point-like conductive phase materials into the cementitious material enhances the overall conductive pathway and considerably reduces the electrical resistance of the cementitious material,enhancing its conductive *** volume ratios of carbon fibre,steel fibre and graphite that achieve an optimal complex doping in the cementitious material were 0.35%,0.6%and 6%,*** was determined using the mutation point of each circuit element parameter as the percolation *** addition,at a certain safety voltage,there is a uniform change between the internal and surface temperatures of the conductive cementitious material,and the heating effect in this materialis is considerably better than that in the pristine cementitious material.

关键词： cementitious composites conductive fillers electrothermal properties electrochemical impedance spectroscopy

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光纤直流电流传感器中的V/F转换电路

高电压技术 2006年第10期32卷 79-81页

作者：张明明张曦范红勇华中科技大学电气与电子工程学院武汉430074

为了提高供能激光器的寿命和可靠性,降低高压侧信号调制电路的功耗。在介绍用于高压直流输电线路中测量直流电流的光供电式光纤电流传感器的基本原理后,利用CMOS器件的超宽工作电压范围、超低工作电流和窄脉冲的特性,采用集成电路和分... 详细信息

为了提高供能激光器的寿命和可靠性,降低高压侧信号调制电路的功耗。在介绍用于高压直流输电线路中测量直流电流的光供电式光纤电流传感器的基本原理后,利用CMOS器件的超宽工作电压范围、超低工作电流和窄脉冲的特性,采用集成电路和分立元件(改进型电荷平衡式V/F转换器)设计了含温度补偿电路的低成本超低功耗V/F转换电路,该电路经测试,该电路的功耗<0.7mW,线性度约为0.05%。该V/F转换电路已成功应用在光供电式光纤电流传感器的高压侧调制电路中。

关键词：直流测量光供电功耗 V/F转换

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粉煤灰吸附剂在废水处理中的研究进展

化工新型材料 2014年第8期42卷 199-201页

作者：欧阳平范洪勇重庆工商大学废油资源化技术与装备教育部工程研究中心重庆400067

粉煤灰是具有良好吸附性能的工业固体废弃物,就其用作吸附剂在各类废水处理中的应用进行了综述,并对未来的发展进行了展望。

关键词：粉煤灰吸附吸附剂废水处理

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粉煤灰吸附剂的研究现状

材料导报 2013年第13期27卷 54-56,66页

作者：欧阳平范洪勇重庆工商大学废油资源化技术与装备教育部工程研究中心重庆400067

粉煤灰是具有良好吸附性能的工业废弃物,充分利用其吸附性能,不仅能保护环境,还能实现对其高附加值利用。从粉煤灰对环境影响的角度,对其用作吸附剂的研究现状进行了综述,强调了对其深度开发利用的紧迫性和可行性,详细阐述了粉煤灰吸附... 详细信息

粉煤灰是具有良好吸附性能的工业废弃物,充分利用其吸附性能,不仅能保护环境,还能实现对其高附加值利用。从粉煤灰对环境影响的角度,对其用作吸附剂的研究现状进行了综述,强调了对其深度开发利用的紧迫性和可行性,详细阐述了粉煤灰吸附剂在废水、废气、废油处理及吸波材料等领域的应用现状,指出了存在的问题并展望了其发展方向。

关键词：粉煤灰吸附吸附剂

初始碱度和温度对养猪废水厌氧发酵过程的影响特征

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环境工程 2023年第2期41卷 53-59,65页

作者：廖杰谢威刘超翔范洪勇厦门理工学院环境科学与工程学院厦门市水资源利用与保护重点实验室福建厦门361024 福州大学环境与安全工程学院福州350108 青岛理工大学环境与市政工程学院山东青岛266033

采用序批式实验研究了不同初始碱度(3503,5500,7500 mg/L,以CaCO_(3)计)和温度(20℃、35℃和50℃)下养猪废水的厌氧发酵过程,考察其对发酵液pH、挥发性脂肪酸、产气量、沼液养分、重金属含量、抗生素和抗性基因的影响特征。结果表明:初... 详细信息

采用序批式实验研究了不同初始碱度(3503,5500,7500 mg/L,以CaCO_(3)计)和温度(20℃、35℃和50℃)下养猪废水的厌氧发酵过程,考察其对发酵液pH、挥发性脂肪酸、产气量、沼液养分、重金属含量、抗生素和抗性基因的影响特征。结果表明:初始碱度调控会延缓水解酸化阶段的启动,强化产酸过程,提高总产酸量;高碱度对发酵液pH的维持能力最高;初始碱度调控适用于以产酸为目的的中温(35℃)和高温(50℃)厌氧发酵。35℃和50℃有利于沼液中养分的释放,50℃时养分浓度最高,为(1365.14±124.38)~(1471.71±135.29)mg/L。50℃厌氧发酵更有利于沼液中水溶态重金属(Cu、Zn)的削减,消减比例分别为(81.53±9.51)~(86.04±7.72)%和(96.48±8.73)~(97.81±10.29)%。厌氧发酵对沼液中抗生素(土霉素和诺氟沙星)具有削减作用,50℃时的削减比例最高,比20℃和35℃分别高(14.61±1.39)~(56.26±5.24)%和(23.83±3.21)~(85.84±17.35)%。50℃和适量初始碱度调控能够降低抗性基因的相对丰度。该研究结果可为畜禽养殖废水厌氧发酵的工艺优化提供参考。

关键词：碱度温度厌氧发酵养猪废水抗生素

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粉煤灰对模拟废润滑油中水的吸附动力学

环境工程学报 2016年第9期10卷 5191-5196页

作者：欧阳平范洪勇张贤明陈凌王家序重庆工商大学废油资源化技术与装备工程研究中心重庆400067 重庆大学机械传动国家重点实验室重庆400030

为探索用于废润滑油再生吸附的廉价高效吸附剂,用粉煤灰作为吸附剂对废油进行吸附处理。配制一定浓度的以水为吸附质的模拟废润滑油,考察模拟废油的优化均匀实验条件及吸附过程中的动力学特性。结果表明:反应55min时,吸附达到平衡,水的... 详细信息

为探索用于废润滑油再生吸附的廉价高效吸附剂,用粉煤灰作为吸附剂对废油进行吸附处理。配制一定浓度的以水为吸附质的模拟废润滑油,考察模拟废油的优化均匀实验条件及吸附过程中的动力学特性。结果表明:反应55min时,吸附达到平衡,水的去除率达到91.15%,单位吸附量达到279.745μg·g-1,对废油有较好的吸附效果;动力学数据拟合吸附过程符合准二级吸附速率方程;动边界模型分析得孔隙扩散和吸附反应为吸附过程的速度控制步骤;采用Dünwald-Wagner公式法,估算有效扩散系数(Dc)为7.271×10-7cm2·s-1。

关键词：粉煤灰废油水吸附动力学

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粉煤灰吸附处理废润滑油中水的动力学研究

功能材料 2016年第B6期47卷 179-184页

作者：欧阳平范洪勇张贤明陈凌刘先斌重庆工商大学废油资源化技术与装备教育部工程研究中心重庆400067

为探索用于废润滑油再生吸附的廉价高效吸附剂,用粉煤灰作为吸附剂对废润滑油进行吸附处理。预处理原状粉煤灰并配制一定浓度以水为单一吸附质的废润滑油,探究其优化的均匀实验条件,考察粉煤灰对废润滑油中水的吸附动力学特性。结果表明... 详细信息

为探索用于废润滑油再生吸附的廉价高效吸附剂,用粉煤灰作为吸附剂对废润滑油进行吸附处理。预处理原状粉煤灰并配制一定浓度以水为单一吸附质的废润滑油,探究其优化的均匀实验条件,考察粉煤灰对废润滑油中水的吸附动力学特性。结果表明,预处理后粉煤灰具备较好吸附特性的物质和结构基础;反应55min时,吸附达到平衡,水的去除率达到91.15%,单位吸附量达到279.745μg/g;动力学数据拟合吸附过程符合准二级吸附速率方程;孔道扩散过程分为初始的快速扩散过程和随后的缓慢内扩散过程,BN=101.629,吸附过程由孔道内扩散主要控制。

关键词：粉煤灰废润滑油吸附动力学