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Location-allocation modeling for emergency evacuation planning with GIS and remote sensing:A case study of Northeast Bangladesh

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Geoscience Frontiers 2021年第3期12卷 169-185页

作者： Mahfuzur Rahman Ningsheng Chen MdMonirul Islam Ashraf Dewan Hamid Reza Pourghasemi Rana muhammad AliWashakh Nirdesh Nepal Shufeng Tian Hamid Faiz Mehtab Alam naveed Ahmed Key Laboratory for Mountain Hazards and Earth Surface Process Institute of Mountain Hazards and Environment(IMHE)Chinese Academy of Sciences(CAS)Chengdu 610041China University of Chinese Academy of Sciences(UCAS) Beijing 100049China Department of Civil Engineering International University of Business Agriculture and Technology(IUBAT)Dhaka 1230Bangladesh School of Earth and Planetary Sciences Curtin UniversityKent StBentleyWA 6102Australia Department of Natural Resources and Environmental Engineering College of AgricultureShiraz UniversityShirazIran School of Architecture Neijiang Normal UniversityNeijiang 641100China Institute of Tibetan Plateau Research Chinese Academy of SciencesBeijing 100101China Global Institute for Interdisciplinary Studies Kathmandu 3084Nepal

This work developed models to identify optimal spatial distribution of emergency evacuation centers(EECs)such as schools,colleges,hospitals,and fire stations to improve flood emergency planning in the Sylhet region of northeastern *** use of location-allocation models(LAMs)for evacuation in regard to flood victims is essential to minimize disaster *** the first step,flood susceptibility maps were developed using machine learning models(MLMs),including:Levenberg-Marquardt back propagation(LM-BP)neural network and decision trees(DT)and multi-criteria decision making(MCDM)*** of the MLMs and MCDM techniques were assessed considering the area under the receiver operating characteristic(AUROC)*** approaches in a geographic information system(GIS)for four well-known LAM problems affecting emergency rescue time are proposed:maximal covering location problem(MCLP),the maximize attendance(MA),p-median problem(PMP),and the location set covering problem(LSCP).The results showed that existing EECs were not optimally distributed,and that some areas were not adequately served by EECs(i.e.,not all demand points could be reached within a 60-min travel time).We concluded that the proposed models can be used to improve planning of the distribution of EECs,and that application of the models could contribute to reducing human casualties,property losses,and improve emergency operation.

关键词： Natural disasters Emergency evacuation centers Flooding Machine learning Multi-criteria decision making Location-allocation model

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Semiconductor Electrochemistry for Clean Energy Conversion and Storage

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Electrochemical Energy Reviews 2021年第4期4卷 757-792页

作者： Bin Zhu Liangdong Fan naveed Mushtaq Rizwan Raza muhammad Sajid Yan Wu Wenfeng Lin Jung‑Sik Kim Peter D.Lund Sining Yun Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/Energy Storage Joint Research Center School of Energy and EnvironmentSoutheast UniversityNanjing 210096JiangsuChina Shenzhen Key Laboratory of New Lithium‑Ion Batteries and Mesoporous Materials College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen 518060GuangdongChina Clean Energy Research Lab(CERL) Department of PhysicsCOMSATS University IslamabadLahore CampusLahore 54000Pakistan Engineering Research Center of Nano‑Geo Materials of Ministry of Education Faculty of Materials Science and ChemistryChina University of GeosciencesWuhan 430074HubeiChina Department of Chemical Engineering School of AeronauticalAutomotiveChemical and Materials EngineeringLoughborough UniversityLoughborough LE113TUUK Department of Aeronautical&Automotive Engineering School of AeronauticalAutomotiveChemical and Materials EngineeringLoughborough UniversityLoughborough LE113TUUK Department of Engineering Physics/Advanced Energy Systems School of ScienceAalto University00076 AaltoEspooFinland Functional Materials Laboratory(FML) School of Materials Science and EngineeringXi’an University of Architecture and TechnologyXi’an 710055ShaanxiChina

Semiconductors and the associated methodologies applied to electrochemistry have recently grown as an emerging field in energy materials and *** example,semiconductor membranes and heterostructure fuel cells are new technological trend,which differ from the traditional fuel cell electrochemistry principle employing three basic functional components:anode,electrolyte,and *** electrolyte is key to the device performance by providing an ionic charge flow pathway between the anode and cathode while preventing electron *** contrast,semiconductors and derived heterostructures with electron(hole)conducting materials have demonstrated to be much better ionic conductors than the conventional ionic *** energy band structure and alignment,band bending and built-in electric field are all important elements in this context to realize the necessary fuel cell *** review further extends to semiconductor-based electrochemical energy conversion and storage,describing their fundamentals and working principles,with the intention of advancing the understanding of the roles of semiconductors and energy bands in electrochemical devices for energy conversion and storage,as well as applications to meet emerging demands widely involved in energy applications,such as photocatalysis/water splitting devices,batteries and solar *** review provides new ideas and new solutions to problems beyond the conventional electrochemistry and presents new interdisciplinary approaches to develop clean energy conversion and storage technologies.

关键词： Semiconductor electrochemistry Fuel cells Lithium-ion batteries Solar cells Built-in electric field Energy system integration

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MoS2-rGO hybrid architecture as durable support for cathode catalyst in proton exchange membrane fuel cells

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Chinese Journal of Catalysis 2019年第8期40卷 1160-1167页

作者： muhammad Tuoqeer Anwar Xiaohui Yan muhammad Rehman Asghar naveed Husnain Shuiyun Shen Liuxuan Luo Xiaojing Cheng Guanghua Wei Junliang Zhang Institute of Fuel Cells School of Mechanical EngineeringMOE Key Laboratory of Power and Machinery EngineeringShanghai Jiao Tong UniversityShanghai 200240China COMSATS University Islamabad (Sahiwal Campus) Off G.T. Rd.SahiwalPunjab 57000Pakistan Institute of Thermal Energy Engineering School of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240China SJTU-ParisTech Elite Institute of Technology Shanghai Jiao Tong UniversityShanghai 200240China

Carbon black is utilized as a conventional electrocatalyst support material for proton exchange membrane fuel cells. However, this support is prone to corrosion under oxidative and harsh environments, thus limiting the durability of the fuel cells. Meanwhile, carbon corrosion would also weaken the linkage between Pt and the support material, which causes Pt agglomeration, and consequently, deterioration of the cell performance. To overcome the drawbacks of a Pt/C electrocatalyst, a hybrid support material comprising molybdenum disulfide and reduced graphene oxide is proposed and synthesized in this study to exploit the graphitic nature of graphene and the availability of the exposed edges of MoS2. TEM results show the uniform dispersion of Pt nanoparticles over the MoS2-rGO surface. Electrochemical measurements indicate higher ECSA retention and better ORR activity after 10000 potential cycles for Pt/MoS2-rGO as compared to Pt/C, demonstrating the improved durability for this hybrid support material.

关键词： Fuel cell Hybrid catalyst support Carbon corrosion Supported catalyst Pt-based electrocatalyst

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Simulation and Experimental Analysis of Vortex Tube Using Steel Material

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Open Journal of Fluid Dynamics 2020年第3期10卷 151-163页

作者： muhammad Bilal Yaolong Chen Jun Zha naveed Ullah School of Mechanical Engineering Xi’an Jiaotong University Xi’an China State Key Laboratory for Manufacturing System Engineering Xi’an Jiaotong University Xi’an China

Experimental and computational fluid dynamics (CFD) are investigated through the vortex tube system. The benefit of vortex tube is a counter flow type tube, which has further designed and fabricated for investigation. The whole set up is consisting of a simple device that can separate a single stream of compressed air into two streams;one is at high temperature and the other is lower temperature following an inlet gas stream. The advantages of this tube are their compactness, safety, and low equipment cost mainly used in cooling and heating applications. This study addressed three-dimensional flows;the domain is using computational fluid dynamics (CFD) method and experimental approach to optimize the direction of RHVT. Through the CFD analysis, the best cold end diameter (dc), number of nozzles, and the best parameters for obtaining the highest hot gas temperature and lowest cold gas temperature were obtained and verified by experimental procedures.

关键词： Ranque-Hilsch Vortex Tube Design Analysis & Fabrication Experimental of Vortex Tube Steel Material

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基于网丝传感器的燃料组件间两相流测量系统

基于网丝传感器的燃料组件间两相流测量系统

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作者： muhammad naveed Anjum 华北电力大学(北京)

学位级别：硕士

两相流存在于大多数热工流体环境中,在核电站燃料组件间热力水力工程实验中的气液两相流测量有重要意义。网丝传感器在采集分辨率和采集速度上比电阻式,超声波式传感器更有优势。压水堆燃料组件热工水力实验中的气液两相流的测量有对于... 详细信息

两相流存在于大多数热工流体环境中,在核电站燃料组件间热力水力工程实验中的气液两相流测量有重要意义。网丝传感器在采集分辨率和采集速度上比电阻式,超声波式传感器更有优势。压水堆燃料组件热工水力实验中的气液两相流的测量有对于研究特定工况下棒间流动特性、包壳传热特性均有重要意义。传统的两相流测量手段应用于燃料组件棒间空泡份额和气泡速度分布测量时,存在测量空间分辨率不够,或测量成本过高的局限性。针对上述问题,论文开展了适合燃料组件两相流测量的网丝传感器的研制,包括激励电路和接收电路设计、数据采集程序和图像重构程序、燃料组件模拟实验段设计等。与传统的网丝传感器不同的是,该设计同时将燃料棒本体作为激励电极,进一步提高了测量的空间分辨率。为了测试和验证所设计的网丝传感器,设计并制造了模拟燃料组件实验台架。通过安装了棒束的矩形实验段中产生上升气泡,模拟燃料组件间的两相流环境。在本课题中,电路设计是最重要的部分。电路设计得到改进。设计的电路在功率、成本和复杂度方面进行了优化。该控制是使用微控制器执行的,没有使用任何移位寄存器或多路复用器。电路简单,响应时间快,噪声低。

关键词：气液两相流网丝传感器电路设计燃料组件

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Numerical Solution of Casson Fluid Flow under Viscous Dissipation and Radiation Phenomenon

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Journal of Applied Mathematics and Physics 2022年第2期10卷 475-490页

作者： naveed Akbar Sardar muhammad Hussain Riaz Ullah Khan School of Mathematics and Statistics Sichuan University of Science and Engineering Yibin China Department of Mathematical Sciences Balochistan University of Information Technology Engineering and Management Sciences (BUITEMS) Quetta Pakistan School of Life Science and Engineering University of Electronic Science and Technology of China Chengdu China

This article numerically investigates the 2D, steady, laminar, incompressible fluid flow, mass and heat transfer of a non-Newtonian fluid model induced by stretching surface. A Casson fluid model is considered to study the non-Newtonian behavior of the flowing fluid. The magnetic field and a porous medium are considered in the flow momentum, whereas the viscous dissipation is also taken into account in the energy transport phenomena. To see the fluid concentration, the concentration equation is used. Furthermore, the Nusselt number coefficient and skin friction are modified with the addition of nonlinear stretching and radiation parameters. With the similarity transformation, the nonlinear governing partial differential equations are transformed into a system of ordinary differential equations and then numerically solved using a fourth-order Runge-Kutta scheme with the shooting method. The relevant parameters of interest are interpreted for graphical results. The results illustrate that the fluid energy increases effectively with an increase in the Eckert number, radiation parameter, and heat source parameter, while it decreases by increasing the Prandtl number and heat sink parameter. Both the wall skin friction and the wall Nusselt number coefficient decelerate with an increase in the Casson parameter.

关键词： Casson Fluid Porous Medium Runge-Kutta Scheme Shooting Method Prandtl Number Nusselt Number Coefficient

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一种新型单孔微创手术灵巧机械臂的设计与制作

一种新型单孔微创手术灵巧机械臂的设计与制作

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作者： muhammad Kashif naveed 上海交通大学

学位级别：硕士

蛇形机器人因外形小巧且具有灵活的弯曲能力而非常适合于外科手术,在微创外科手术(MIS)中得到了广泛应用,其关节灵巧性特征已在外科手术机器人领域开创出新的研究特色。虽然腕部灵巧的器械医生手动操作具有一定的难度,但通过执行器精确... 详细信息

蛇形机器人因外形小巧且具有灵活的弯曲能力而非常适合于外科手术,在微创外科手术(MIS)中得到了广泛应用,其关节灵巧性特征已在外科手术机器人领域开创出新的研究特色。虽然腕部灵巧的器械医生手动操作具有一定的难度,但通过执行器精确控制可以使其在病人体内实现传统手动操作无法实现的动作。随着腕部灵巧性的增加,医生很难进行手动控制,但现在可以通过执行器精确控制。单孔手术(SPS)只需要建立一个切口,通过一组机械臂进入体内对受损组织或目标区域进行微创手术,将人体创收控制在更小的量级,实现单孔微创手术,必将在MIS领域开辟新的创新模式。虽然单孔术后失血少、恢复快、疤痕小,且带来的好处巨大,但机械臂灵巧性关节和刚度带来的问题仍然具有巨大的挑战性。本论文提出了新的SPS机械臂原型样机外径为8mm,具有高度灵巧8+1自由度的2个工具臂以及5自由度相机臂;具有执行器提供的远程力反馈接口,可通过使用外径为1.5毫米的不锈钢柔性圆缆线圈(FWC)实现,旨在对单孔微创手术机器人提供创新设计并对原型样机进行相应研制及初步实验测试。该型SPS系统总自由度为24,这意味着需要24个执行器来控制单个关节的运动。本论文目标是设计一种蛇形机器臂,并具有与人类手臂相似的灵巧运动;整体结构类似人体手臂肩、肘、腕等,很容易安装在任意有效载荷大于3公斤的工业机械臂上。本论文采用全新设计理念将不同的小型激光切割不锈钢管组装在一起,形成环形接头,即便于制造又可利用内部空腔形成组件式连接。在原型样机中采用一种新型的空心圆柱接头和一种穿孔球接头结构,使整个结构简单,易于组装。该关节结构设计模式解决了诸如关节的耦合、通过弯曲关节到远端连杆路径上存在摩擦大等问题;同时提供了自锁能力,确保在任何意外制动时刻,所有的结构保持完整的安全性,FWC也使断裂连接件的更换更加容易。本论文还详细说明了机械设计和连接件设计思路。才有有限元法对结构载荷作用下形变和应力进行了校核与分析;对机械臂空间运动中的进行了矩阵变换和扭转测试,将其直接应用于机械臂正运动学求解;采用Moore-Penrose伪逆求解逆运动学解,同时还生成了机器人手臂的D-H参数,以探索运动学解。此外,利用ROS系统Move It功能对机械臂连杆进行扭转测试与运动学仿真,对机械臂工作空间及末端执行器目标空间中的工作范围进行了优化分析与模拟验证。最后,本论文通过搭建主从遥操作控制平台,对关节弯曲角度、机械臂可操作性、末端动态载荷等指标均进行了实验测试,验证该机械臂原型样机设计与研制的正确性。

关键词：离散体机器人单孔手术柔性圆缆线圈操作灵活性结构优化机器人操作系统

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Migraine in physicians and final year medical students:A crosssectional insight into prevalence,self-awareness,and knowledge from Pakistan

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World Journal of Methodology 2022年第5期12卷 414-427页

作者： Hassan Choudry Fateen Ata muhammad naveed naveed Alam Ruqaiya Ruqaiya Mahammed Khan Suheb muhammad Qaiser Ikram muhammad Muzammil Chouhdry Muaz Muaz Department of Respiratory Medicine University Hospital of LeicesterLeicester LE1United Kingdom Department of Internal Medicine Hamad Medical CorporationDoha 0000Qatar Department of Neurology Faisalabad Medical UniversityFaisalabad 38000PunjabPakistan Department of Neurocritical Care AdventhealthOrlandoFlorida 33662United States

BACKGROUND Despite its high prevalence,migraine remains underdiagnosed worldwide.A significant reason is the knowledge gap in physicians regarding diagnostic criteria,clinical features,and other clinical aspects of *** To measure the knowledge deficit in physicians and medical students and to assess the prevalence of migraine in the same *** An online questionnaire was developed and distributed among physicians and final year medical students on duty in various medical and surgical specialties of Allied and DHQ Hospitals,Faisalabad,between October 2018 and October *** criteria were public practicing physicians who experience headaches,while those who never experienced headaches were *** questions assessed respondents on their knowledge of triggers,diagnosis,management,and prophylaxis of the migraine *** were asked to diagnose themselves using embedded ICHD-3 diagnostic criteria for different types of ***,tables,and figures were made using Microsoft Office 2016 and Microsoft Visio,and data analysis was done in R Studio *** We had 213 respondents and 175 fulfilled inclusion criteria,with 99(52%),58(30%)and 12(6.3%)belonging to specialties of medicine,surgery,and others,*** genders were symmetrically represented(88 male and 87 female).Fifty-two(24.4%)of our 213 respondents were diagnosed with migraine,with 26(50%)being aware of *** had higher prevalence among study participants(n=28,32.2%)compared to males(n=20,22.7%,P=0.19).A majority(62%)of subjects never consulted any doctor for their ***,a majority(62%)either never heard or did not remember the diagnostic criteria of *** 38%falsely believed that having any type of aura is essential for diagnosing *** consultation rate was 37%(n=65),and migraineurs were significantly more likely to have consulted a doctor,and a neurologist in particular(P<0.001).Consulters and migraineurs fared bet

关键词： Migraine Headache disorders Knowledge study Prevalence Knowledge Epidemiology Public health

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国外农业航空静电喷雾技术研究进展与借鉴

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农业工程学报 2021年第6期37卷 50-59页

作者：张亚莉黄鑫荣王林琳邓继忠曾文兰玉彬 muhammad naveed Tahir 华南农业大学工程学院广州510642 国家精准农业航空施药技术国际联合研究中心广州510642 华南农业大学电子工程学院广州510642 Department of Agronomy PMAS-Arid Agriculture UniversityRawalpindi 46300Pakistan

农业航空静电喷雾技术作为中国发展精准农业航空应用技术的内容之一,对农药的有效利用和减少环境污染有积极意义。农业航空静电喷雾技术在国外发展较早也相对成熟,美国已有应用于有人机的商业化产品,并在美国、巴西等国各类粮食作物、... 详细信息

农业航空静电喷雾技术作为中国发展精准农业航空应用技术的内容之一,对农药的有效利用和减少环境污染有积极意义。农业航空静电喷雾技术在国外发展较早也相对成熟,美国已有应用于有人机的商业化产品,并在美国、巴西等国各类粮食作物、经济作物和杂草防治作业中开展了大规模田间应用。该研究首先从基础研究、田间应用和优化工作等方面梳理了国外农业航空静电喷雾技术的研究进展,分析了农业航空静电喷雾技术在增加雾滴沉积、减少飘移和具备低施药液量等方面的优势。在此基础上结合中国植保无人机快速发展的实际对研究和应用适合中国国情的农业航空静电喷雾技术进行思考,提出了农业航空静电喷雾技术的研究路线,最后从采用接触式等非感应式充电方式、开发农业航空静电喷雾的测量技术,以及思考荷质比作为衡量指标的意义等方面探讨了可进行深入研究的方向。中国农业航空静电喷雾技术研究特别在植保无人机静电喷雾技术方面的研究与应用有很大的发展空间,可参考国外经验,围绕航空静电喷雾技术的基础性研究、田间试验、成果转化、示范推广和服务指导全方面制定发展规划,把单一强调对雾滴带电的实现转向对技术系统的整体研究。

关键词：农业航空植保综述静电喷雾雾滴沉积航空施药

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Enhanced bio-catalytic and tolerance properties of an indigenous cellulase through xerogel immobilization

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Advances in Bioscience and Biotechnology 2012年第4期3卷 308-313页

作者： Hafiz muhammad Nasir Iqbal Shagufta Kamal Ishtiaq Ahmed muhammad Tahir naveed Department of Chemistry and Biochemistry University of Agriculture Faisalabad Pakistan Transgenic Lab Center of Agriculture Biochemistry and Biotechnology (CABB) University of Agriculture Faisalabad Pakistan

Today, demand exists for cost-effective production of industrially important enzymes from entire scientific sectors. By keeping in mind the extensive industrial applications of cellulase, this study was performed to immobilize the indigenous enzyme produced from Trichoderma viride under pre-optimized SSF of an agricultural waste material, wheat straw. To enhance the bio-catalytic and tolerance properties of the present enzyme gel matrix immobilization engineering was applied. Previously, 2.33~fold purified novel cellulase was immobilized in to a xerogel matrix of TMOS and PTMS. FTIR spectroscopy confirmed the successful immobilization of cellulase. The free and immobilized cellulase was characterized and stability profile showed that after 24 h incubation, immobilization enhanced the thermo-stability up to 75% against 80℃ as compare to the free enzyme. Xerogel matrix immobilization enhanced the catalytic efficiency of entrapped enzyme than that of the free cellulase. Among activators/inhibitors SDS, EDTA, and Hg2+ showed inhibitory effect while, gel matrix immobilization enhanced 80% tolerance capacity of the cellulase against inactivating agents.

关键词： Bio-Catalysis Cellulase T. viride Immobilization Characterization

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