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modeling vulnerability of protected areas to invasion by Chromolaena odorata under current and future climates

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Ecosystem Health and Sustainability 2015年第6期1卷 28-39页

作者： A.Belarmain Fandohan ayub m.o.oduor A.Idelphonse Sode Liang Wu Aida Cuni-Sanchez Emeline Assede Gerard N.Gouwakinnou Forestry Agroforestry and Biogeography Unit University of Agriculture of KetouBP43KetouRepublic of Benin Biometry and Environmental System Analysis Faculty of Forest and Environmental SciencesAlbert-Ludwigs-University of FreiburgTennebacher Strasse 4Freiburg79085 Germany UNEP-International Ecosystem management Partnership c/o Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesNo.11A Datun RoadBeijing 100101 China Ecology Department of BiologyUniversity of Konstanz.Universitatsstrasse 10D-78457 KonstanzGermany Laboratoire d’Ecologie Appliquee FacultedesSciencesAgronomiquesUniversited’Abomey-Calavi01BP526CotonouBenin Environment Department University of YorkHeslingtonYO105DDYorkUnited Kingdom Ecole Nationale Superieur d’Amenagement et de Gestion des Aires Protegees Universite de ParakouBP287KandiBenin

Invasive plant species and climate change are among the biggest threats to the ecological integrity of many ecosystems,including those of protected *** management of invasive plants requires information regarding their spatialdistributions Using maximum entropy,wemodeled habitat suitability for an invasive plant species Chromolaena odorata under current and future climatic conditions(HadGEm2-ESand mIRoC5)in protected areas of four West African countries(Benin,Cote d'voire,Ghana,and Togo).Under current climatic conditions,approximately 73%of total land area within the protected areas was suitable for colonization by *** future climate projections,the total area of suitable habitats for this invasive plant was projected to decrease by 7-9%(HadGEm2-ES)and 12-14%(mIRoC5).Country-specific patterns suggest that major protected areas in Cote d'Ivoire and Ghana will be more vulnerable to invasion by *** than those in Benin and Togo under both current and future dimatic *** maintain normal ecosystem functioning and provisioning of ecosystem services within the protected areas studied here,locations that have been identified as most vulnerable to invasion by *** should be accorded proportionately higher priority when formulating appropriate management strategies.

关键词： Chromolaena odorata climate change HadGEm2-ES maximum entropy mIRoC5 representative concentration pathways risk assessment Siam weed West Africa

通过中非合作推动在非洲实施“气候、生态与生计”综合途径（英文）

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Journal of Resources and Ecology 2018年第3期9卷 232-236页

作者：王国勤付超刘健张林秀 ayub m.o.oduor Dagne mojo mulubrhan Balehegn 联合国环境规划署国际生态系统管理伙伴计划北京100101 中国科学院地理科学与资源研究所生态系统网络观测与模拟重点实验室北京100101 联合国环境规划署肯尼亚内罗毕00100 中国科学院地理科学与资源研究所农业政策研究中心北京100101 中国科学院大学北京100049 肯尼亚理工大学应用和技术生物学系肯尼亚内罗毕00200

非洲的可持续发展面临挑战与机遇。对于非洲大陆来说,"气候、生态与生计"(CEL)综合途径是通过整合力量实现可持续发展的一种有效方式。本文在对多个机构特别是联合国环境规划署国际生态系统管理伙伴计划(UNEP-IEmP)在非洲开展的工作进... 详细信息

非洲的可持续发展面临挑战与机遇。对于非洲大陆来说,"气候、生态与生计"(CEL)综合途径是通过整合力量实现可持续发展的一种有效方式。本文在对多个机构特别是联合国环境规划署国际生态系统管理伙伴计划(UNEP-IEmP)在非洲开展的工作进行总结的基础上,探讨了非洲在实施CEL综合途径方面的需求及机会,提出了未来在中非合作框架下如何推动实施CEL途径的看法。主要结论是,非洲是实施CEL途径的重点地区之一;UNEP-IEmP已经开展了几项重大行动,为在非洲实施CEL途径打下了基础;但应在中国和非洲现有的合作机构、网络和项目基础上建立广泛的合作伙伴关系,以支持未来关于CEL综合途径的中非合作。

关键词： “气候、生态与生计(CEL)” 综合途径可持续发展中非合作

Energy transport for ion acoustic waves in a spin polarized quantum plasma

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Communications in Theoretical Physics 2020年第1期72卷 124-129页

作者： m ayub Z Iqbal H A Shah G murtaza Salam Chair Department of PhysicsG.C.UniversityKatchery RoadLahore 54000Pakistan Department of Physics G.C.UniversityKatchery RoadLahore 54000Pakistan Department of Physics Mirpur University of Science and TechnologyMirpur-10250(AJK)Pakistan

The separate spin evolution quantum hydrodynamics(SSE-QHD)model is used to investigate the energy behavior for ion acoustic waves in degenerate quantum *** results show that the energy flow speed decreases with spin polarization *** is also shown that it decreases with the increasing rate up to a certain range of wave number and then it goes to zero *** is observed that Bohm potential suppresses the energy flow *** is also noticed that the energy flow speed deviates from the group velocity even in the absence of Bohm potential ***,the contribution of of Bohm poential effect in spin polarized plasma reduces the extent of deviation.

关键词： spin polarization quantum plasma ion acoustic wave energy flow speed

Effects of partial slip on flow of a third grade fluid

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Acta mechanica Sinica 2006年第5期22卷 393-396页

作者： S. Asghar m. mudassar Gulzar m. ayub Department of mathematics COMSATS Institute of Information Technology H-8 Islamabad Pakistan Department of mathematics Quaid-i-Azam University

This paper is an analytical study of the rotating flow of a third grade fluid past a porous plate with partial slip effects. It serves as a flow model for the study of polymers. The analytic solution has been determin... 详细信息

关键词： Partial-slip Non-Newtonian fluid Analytic solution Homotopy analysis method

Stokes'first problem for the fourth order fluid in a porous half space

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Acta mechanica Sinica 2007年第1期23卷 17-21页

作者： T.Hayat F.Shahazad m.ayub Department of mathematics Quaid-I-Azam University 45320Islamabad 44000Pakistan

In this study, the flow of a fourth order fluid in a porous half space is modeled. By using the modified Darcy＇s law, the flow over a suddenly moving flat plate is studied numerically. The influence of various parame... 详细信息

关键词： Fourth order fluid Porous space Numerical solution modified Darcy's law

A Complete Foliation of Schwarzschild Spacetime by Free Falling Hypersurfaces

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Chinese Physics Letters 2006年第12期23卷 3161-3164页

作者： m. ayub Faridi Amjad Pervez Haris Rashid Fazal-e-Aleem Centre for High Energy Physics (CHEP) University of the Punjab Lahore 54590 Pakistan Institute of Chemical Engineering and Technology University of the Punjab Lahore 54590 Pakistan

Free falling hypersurfaces in the Schwarzschild geometry have been studied to provide a complete foliation of spacetime. The hypersurfaces do not cross into the maximally extended spacetime and are well behaved everyw... 详细信息

关键词： CoNSTANT-mEAN-CURVATURE RELATIVITY SURFACES TImE

Application of Vortex Generators to Remove Heat Trapped in Closed Channels

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Fluid Dynamics & materials Processing 2023年第1期19卷 15-24页

作者： Alim Al ayub Ahmed Salim oudah mezan Binyamin murtadha Doghiam Abdullah Elena Tesleva Linar G.Akhmetov Rustem Zalilov mustafa m.Kadhim Abduladheem Turki Jalil School of Accounting Jiujiang UniversityJiujiang332000China General Directorate of Education in Al-muthanna Governorate Ministry of EducationSamawah66001Iraq Department of mechanical Engineering Faculty of Science and TechnologyUniversitas Muhammadiyah Kalimantan TimurSamarinda75124Indonesia College of Petroleum Engineering Al-Ayen UniversityThi-Qar64001Iraq National Research Tomsk Polytechnic University Tomsk634050Russia Kazan Federal University Kazan420008Russian Nosov magnitogorsk State Technical University Magnitogorsk455000Russia Department of Dentistry Kut University CollegeKutWasit52001Iraq College of Technical Engineering The Islamic UniversityNajaf7003Iraq Department of Pharmacy OsolAldeen University CollegeBaghdad993P+PWXIraq Faculty of Biology and Ecology Yanka Kupala State University of GrodnoGrodno230023Belarus

The utilization of vortex generators to increase heat transfer from cylinders installed inside a duct is *** particular,a channel containing eight cylinders with volumetric heat sources is considered for different values of the Reynolds *** effective possibility to use vortex generators with different sizes to increase heat transfer and,consequently,reduce the surface temperature of the cylinders is ***,the amount of pressure drop inside the channel due to the presence of vortex generators is considered and compared with the cases without vortex *** results show that although the addition of generators increases the pressure drop,it strongly contributes to increase the heat transfer coefficient inside the duct(up to 80–90%).

关键词： Vortex generators heat trapped temperature of hot surfaces heat transfer

optimizing Fluid Flow Cooling in Gas Transmission Systems

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Fluid Dynamics & materials Processing 2022年第4期18卷 1099-1109页

作者： Gunawan Widjaja mohaimen Al-Thamir Farshid mehran Lis m.Yapanto Irina N.Fardeeva Alim Al ayub Ahmed Supat Chupradit V.A.Kukushkina oleg R.Kuzichkin Universitas Krisnadwipayana Senior Lecturer Faculty of Public Health Universitas IndonesiaFaculty of Law Universitas KrisnadwipayanaJawa Barat13077Indonesia Scientific Research Center Al-Ayen UniversityThi-Qar64001Iraq Islamic Azad University Jolfa International BranchJolfa***Iran Departement of Aquatic management Faculty of Fisheries and Marine ScienceUniversitas Negeri GorontaloGorontalo96128Indonesia Kazan Federal University Kazan420008Russia School of Accounting Jiujiang UniversityJiujiang33200China Department of occupational Therapy Faculty of Associated Medical SciencesChiang Mai UniversityChiang Mai50200Thailand Lipetsk State Technical University Lipetsk398600Russia Department of Information and Robototechnic Systems Belgorod State UniversityBelgorod308015Russia

In this study,structural theory was used to examine the geometric configuration of channels embedded inside an object in the presence of internal heat generation for cooling by a heat transfer *** growth and development of gas transmission lines and the lack of up-to-date integrated information systems have made the design and maintenance of pipelines,as well as the handling of problems caused by various accidents in the pipeline,very complex in many *** accurate descriptive and spatial information in tolls on gas transmission line maps such as pipes,booster stations,valves,and forks in a spatial reference database can engage planners,operators,and paramedics in a variety of *** are used to help in the direction of optimal and purposeful ***,in this paper,by considering appropriate laboratory conditions and numerical experiments and calculations,it is possible to determine the optimal attraction of duct holes for cooling components of the gas transmission system,so that the industry can produce and developed gas transmission without *** this study,in addition to studying the geometric characteristics of channel spacing and their length,the dimensions of a specific channel for reducing the maximum produced temperature are also discussed.

关键词： Cooling component duct hole gas transmission line pipeline cooling system

Dust-Lower-Hybrid Surface Waves in Classical and Degenerate Plasmas

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Communications in Theoretical Physics 2013年第11期60卷 623-629页

作者： m.ayub H.A.Shah m.N.S.Qureshi m.Salimullah Department of Physics G. C. University Department of Physics Mirpur University of Science and Technology (MUST) Department of Physics Jahangirnagar University

The dispersion relation for general dust low frequency electrostatic surface waves propagating on an interface between a magnetized dusty plasma region and a vacuum is derived by using specular reflection boundary conditions both in classical and quantum regimes. The frequency limit ωωci ωce is considered and the dispersion relation for the Dust-Lower-Hybrid Surface Waves(DLHSW's) is derived for both classical and quantum plasma half-space and analyzed numerically. It is shown that the wave behavior changes as the quantum nature of the problem is considered.

关键词：尘埃等离子体表面波古典简并混合反射边界条件色散关系频率限制