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Communications in Theoretical Physics 2023年第1期75卷 5-14页

作者： hajar f ismael Tukur Abdulkadir Sulaiman M S Osman Department of Mathematics Faculty of ScienceUniversity of ZakhoZakhoIraq Department of Computer Engineering Biruni UniversityIstanbulTurkey Department of Mathematics Faculty of ScienceCairo UniversityGiza 12613Egypt

Lump solutions are one of the most common solutions for nonlinear evolution *** study aspires to investigate the generalized Hietarintatype *** auspiciously provide multiple M-lump *** the other hand,collision phenomena to multiple M-lump waves with soliton wave solutions are also *** the collision,the amplitude of the lump will change significantly over the processes,whereas the amplitude of the soliton will just minimally *** it is of paramount importance,we use suitable values of parameter to put out the physical features of the reported results through three dimensional and contour *** results presented express physical features of lump and lump interaction phenomena of different kinds of nonlinear physical ***,this study serves to enrich nonlinear dynamics and provide insight into how nonlinear waves propagate.

关键词： the generalized Hietarintatype equation M-lump waves interaction phenomena hirota bilinear method

Various exact wave solutions for KdV equation with time-variable coefficients

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Journal of Ocean Engineering and Science 2022年第5期7卷 409-418页

作者： hajar f.ismael Muhammad Amin S.Murad Hasan Bulut Department of Mathematics Faculty of ScienceUniversity of ZakhoZakhoIraq Department of Mathematics College of ScienceUniversity of DuhokDuhokIraq Department of Computer and communications Engineering College of EngineeringNawroz UniversityDuhokIraq Department of Mathematics Faculty of ScienceFirat UniversityElazigTurkey

In this study,we investigate the(2+1)-dimensional Korteweg-De Vries(KdV)equation with the extension of time-dependent coefficients.A symbolic computational method,the simplified Hirota’s method,and a long-wave method are utilized to create various exact solutions to the suggested *** symbolic computational method is applied to create the Lump solutions and periodic lump ***’s method and a long-wave method are implemented to explore single-,double-and triple-M-lump waves,and interaction physical phenomena such as an interaction of single-M-lump with one-,twosoliton solutions,as well as a collision of double-M-lump with single-soliton ***,the simplified Hirota’s method is employed to explore complex multi-soliton *** realize dynamics,the gained solutions are drawn via utilizing different arbitrary variable coefficients.

关键词： Hirota’s method Lump solutions Interaction phenomena Complex multi-soliton waves KdV equation

Analyzing study for the 3D potential Yu-Toda-Sasa-fukuyama equation in the two-layer liquid medium

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Journal of Ocean Engineering and Science 2024年第5期9卷 454-460页

作者： hajar f.ismael Ìsrafil Okumus Tolga Aktürk Hasan Bulut M.S.Osman Department of Mathematics Faculty of ScienceUniversity of ZakhoZakhoIraq Department of Mathematics Faculty of ScienceFirat UniversityElazigTurkey Department of Mathematics Faculty of ScienceErzincan Binali Yildirim UniversityErzincanTurkey Department of Mathematics and Science Education Faculty of EducationOrdu UniversityTurkey Department of Mathematics Faculty of Applied ScienceUmm Al-Qura UniversityMakkah 21955Saudi Arabia Department of Mathematics Faculty of ScienceCairo UniversityGiza 12613Egypt

In this work,we use the(m+1/G')-expansion method and the Adomian decomposition method to study the 3D potential Yu-Toda-Sasa-fukuyama(3D-pYTSf)equation which has a good application in the twolayer liquid *** the first time,the(m+1/G')-expansion and the Adomian decomposition methods are used to establish novel exact wave solutions and to study some numerical solutions for the 3D-pYTSf equation,*** using the analytical method,kink-type wave,singular solution and some complex solutions to the suggested equation are successfully *** obtained wave solutions are represented with some figures in 3D and contour plots.

关键词： (m+1/G')-expansion method Complex solutions Adomian decomposition method

Newly modified method and its application to the coupled Boussinesq equation in ocean engineering with its linear stability analysis

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Communications in Theoretical Physics 2020年第11期72卷 11-18页

作者： hajar farhan ismael Hasan Bulut Haci Mehmet Baskonus Wei Gao Department of Mathematics Faculty of ScienceUniversity of ZakhoZakhoIraq Department of Mathematics Faculty of ScienceFirat UniversityElazigTurkey Department of Mathematics and Science Education Harran UniversitySanliurfaTurkey School of Information Science and Technology Yunnan Normal UniversityKunmingChina

Investigating the dynamic characteristics of nonlinear models that appear in ocean science plays an important role in our *** this research,we study some features of the paired Boussinesq equation that appears for two-layered fluid flow in the shallow water *** extend the modified expansion function method(MEfM)to obtain abundant solutions,as well as to find new *** using this newly modified method one can obtain novel and more analytic solutions comparing to ***,numerical solutions via the Adomian decomposition scheme are discussed and favorable comparisons with analytical solutions have been done with an outstanding ***,the instability modulation of the governing equations are explored through the linear stability analysis *** new solutions satisfy the main coupled equation after they have been put into the governing equations.

关键词： newly modified method coupled Boussinesq equation linear stability analysis Adomian decomposition method

Multi-Waves,Breathers,Periodic and Cross-Kink Solutions to the(2+1)-Dimensional Variable-Coefficient Caudrey-Dodd-Gibbon-Kotera-Sawada Equation

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Journal of Ocean University of China 2021年第1期20卷 35-44页

作者： LIU Dong JU Xiaodong ILHAN Onur Alp MANAfIAN Jalil ismael hajar farhan State Key Laboratory of Petroleum Resources and Prospecting China University of PetroleumBeijing 102249China China Petroleum Materials Company Limited Beijing 100029China Department of Mathematics Erciyes UniversityMelikgazi-Kayseri 38039Turkey Department of Applied Mathematics Faculty of Mathematical SciencesUniversity of TabrizTabriz ***Iran Department of Mathematics Faculty of ScienceUniversity of ZakhoZakho 42002Iraq

The present article deals with multi-waves and breathers solution of the(2+1)-dimensional variable-coefficient CaudreyDodd-Gibbon-Kotera-Sawada equation under the Hirota bilinear operator *** obtained solutions for solving the current equation represent some localized waves including soliton,solitary wave solutions,periodic and cross-kink solutions in which have been investigated by the approach of the bilinear ***,by choosing specific parameter constraints in the multi-waves and breathers,all cases the periodic and cross-kink solutions can be captured from the 1-and *** obtained solutions are extended with numerical simulation to analyze graphically,which results in 1-and 2-soliton solutions and also periodic and cross-kink solutions *** will be extensively used to report many attractive physical phenomena in the fields of acoustics,heat transfer,fluid dynamics,classical mechanics,and so *** have shown that the assigned method is further general,efficient,straightforward,and powerful and can be exerted to establish exact solutions of diverse kinds of fractional equations originated in mathematical physics and *** have depicted the figures of the evaluated solutions in order to interpret the physical phenomena.

关键词： variable-coefficient Caudrey-Dodd-Gibbon-Kotera-Sawada equation Hirota bilinear operator method soliton multi-waves and breathers periodic and cross-kink solitray wave solutions

A simplified approach to directly consider intact rock anisotropy in Hoek——Brown failure criterion

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Journal of Rock Mechanics and Geotechnical Engineering 2014年第5期6卷 486-492页

作者： Mohamed A.ismael Hassan f.Imam Yasser El-Shayeb Mining Engineering Department Faculty of EngineeringCairo University

Many rock types have naturally occurring inherent anisotropic planes, such as bedding planes, foliation,or flow structures. Such characteristic induces directional features and anisotropy in rocks＇ strength anddeformational properties. The HoekeBrown （HeB） failure criterion is an empirical strength criterionwidely applied to rock mechanics and engineering. A direct modification to HeB failure criterion toaccount for rock anisotropy is considered as the base of the research. Such modification introduced a newdefinition of the anisotropy as direct parameter named the anisotropic parameter （Kb）. However, thecomputation of this parameter takes much experimental work and cannot be calculated in a simple *** aim of this paper is to study the trend of the relation between the degree of anisotropy （Rc） and theminimum value of anisotropic parameter （Kmin）, and to predict the Kmin directly from the uniaxialcompression tests instead of triaxial tests, and also to decrease the amount of experimental work. 2014 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences. Production and hosting byElsevier B.V. All rights reserved.

关键词： Anisotropy Hoek-Brown failure criterion Rock mechanics Anisotropic parameter Degree of anisotropy

Mitigating Urban Heat Island Effects: A Review of Innovative Pavement Technologies and Integrated Solutions

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Structural Durability & Health Monitoring 2024年第5期18卷 525-551页

作者： S.f.ismael A.H.Alias N.A.Haron B.B.Zaidan Abdulrahman M.Abdulghani Department of Civil Engineering Faculty of EngineeringUniversiti Putra MalaysiaSerdang43400Malaysia Central Region Heavy Civil DivisionGranite ConstructionWoodlandsTexas77381USA SP Jain School of Global Management LidcombeSydneyNSW2141Australia Department of Communication Technology and Network Faculty of Computer Science and Information TechnologyUniversiti Putra MalaysiaSerdang43400Malaysia

In this review paper,we present a thorough investigation into the role of pavement technologies in advancing urban *** analysis traverses the historical evolution of these technologies,meticulously evaluating their socio-economic and environmental impacts,with a particular emphasis on their role in mitigating the urban heat island *** evaluation of pavement types and variables inﬂuencing pavement performance to be used in the multi-criteria decision-making(MCDM)framework to choose the optimal pavement application are at the heart of our *** serves to assess a spectrum of pavement options,revealing insights into the most effective and sustainable *** highlighting both the existing challenges and potential innovative solutions within theﬁeld,this paper aims to offer a directional compass for future urban planning and infrastructural *** review not only synthesizes the current state of knowledge but also aims to chart a course for future exploration,emphasizing the critical need for innovative and environmentally sensitive pavement tech-nologies in the creation of resilient and sustainable urban environments.

关键词： Pavement sustainability urban heat island environmental impact of pavements innovative pavement solutions economic and social implications sustainable development in urban areas

Geochemical study of submicron particulate matter(PM1)in a metropolitan area

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Geoscience frontiers 2022年第1期13卷 417-429页

作者： ismael L.Schneider Elba C.Teixeira Guilherme L.Dotto Diana Pinto Cheng-Xue Yang Luis f.O.Silva Postgraduate Program in Remote Sensing and Meteorology Universidade Federal do Rio Grande do SulAv.Bento Gonçalves9500 Porto AlegreRSBrazil Department of Civil and Environmental Universidad de la CostaCUCCalle 58#55-66BarranquillaAtlanticoColombia Research Department Fundação Estadual de Proteção Ambiental Henrique Luís RoesslerAv.Borges de Medeiros261Porto AlegreRSBrazil Chemical Engineering Department Federal University of Santa Maria97105-900 Santa MariaBrazil School of Earth Sciences and Resources China University of Geosciences BeijingBeijing 100083PR China Departamento de Ingeniería Civil y Arquitectura Universidad de LimaAvenida Javier Prado Este 4600–Santiago de Surco 1503Perú

Air pollution has become a major problem in urban areas due to increasing industrialization and *** this study ambient concentrations of PM1 and metal concentrations as well as source contributions were identified and quantified by using Positive Matrix factorization(PMf)in receptor modeling in the Metropolitan Area of Porto Alegre,*** PM1 samples were collected on PTfE filters from December 2012 to December 2014 in two sampling *** ion and trace element concentrations were *** average concentrations were 12.8 and 15.2μg/m^(3) for Canoas and Sapucaia do Sul sites,*** ion contributions of PM1 were secondary pollutants such as sulfate and *** elements,especially Cu,Pb,Zn,Cd,and Ni also made important contributions which are directly associated with anthropogenic *** results show significantly higher levels in winter than in *** of the PM1 and the analyzed PM species and elements originated from anthropogenic sources,especially road traffic,combustion processes and industrial activities,which are grouped in 7 major contributing sources.A back-trajectory analysis showed that the long-range transport of pollutants was not relevant in relation to the contribution to PM1 and metal *** work highlights the importance of urban planning to reduce human health exposure to traffic and industrial emissions,combined with awareness-raising actions for citizens concerning the impact of indoor sources.

关键词： PM1 Trace elements Source apportionment PMf Back trajectory

Alliance free and Alliance Cover Sets

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Acta Mathematica Sinica,English Series 2011年第3期27卷 497-504页

作者： Juan Alberto RODRIGUEZ-VELAZQUEZ Jose Maria SIGARRETA ismael GONZALEZ YERO Sergio BERMUDO Departament d'Enginyeria Informdtica i Matematiques Universitat Rovira i Virgili Av. Paisos Catalans 26 43007 Tarragona Spain faculty of Mathematics Autonomous University of Guerrero Carlos E. Adame 5 Col. La Garita Acapuleo Guerrero Mexico Departament d'Enginyeria Informatica i Matematiques Universitat Rovira i Virgili Av. Pai'sos Catalans 26 43007 Tarragona Spain Department of Economy Quantitative Methods and Economic History Pablo de Olavide University Carretera de Utrera Kin. 1 41013 Sevilla Spain

A defensive （offensive） k-alliance in f = （V, E） is a set S C V such that every v in S （in the boundary of S） has at least k more neighbors in S than it has in V ／ S. A set X C_ V is defensive （offensive） k-alliance free, if for all defensive （offensive） k-alliance S, S／ X ≠ 0, i.e., X does not contain any defensive （offensive） k-alliance as a subset. A set Y C V is a defensive （offensive） k-alliance cover, if for all defensive （offensive） k-alliance S, S ∩ Y ≠ 0, i.e., Y contains at least one vertex from each defensive （offensive） k-alliance of f. In this paper we show several mathematical properties of defensive （offensive） k-alliance free sets and defensive （offensive） k-alliance cover sets, including tight bounds on their cardinality.

关键词： Defensive alliance offensive alliance alliance free set alliance cover set

Hazardous elements and amorphous nanoparticles in historical estuary coal mining area

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Geoscience frontiers 2019年第3期10卷 927-939页

作者： Ana L.Duarte Kátia DaBoit Marcos L.S.Oliveira Elba C.Teixeira ismael L.Schneider Luis f.O.Silva Department of Civil and Environmental Universidad de la Costa faculdade Meridional IMED fEPAM-funda■o Estadual de Prote■o Ambiental Henrique Luis Roessler

In Brazil, intense coal exploitation activities have led to environmental deterioration, including soil mortification, water contamination, loss of ecosystem, and atmospheric contamination. In addition,considerable quantities of sulfur-rich residues are left behind in the mining area; these residues pose grave environmental issues as they undergo sulfide oxidation reactions. When sulfur oxides come in contact with water, extreme acid leachate is produced with great proportions of sulfate, and hazardous elements(HEs), which are identified as coal drainage(CMD). CMD is an environmental pollution challenge, particularly in countries with historic or active coal mines. To prevent CMD formation or its migration, the source must be controlled; however, this may not be feasible at many locations. In such scenarios, the mine water should be collected, treated, and discharged. In this study, data from 2005 to2010 was gathered on the geochemistry of 11 CMD discharges from ten different mines. There are several concerns and questions on the formation of nanominerals in mine acid drainage and on their reactions and interfaces. The detailed mineralogical and geochemical data presented in this paper were derived from previous studies on the coal mine areas in Brazil. Oxyhydroxides, sulfates, and nanoparticles in these areas possibly go through structural transformations depending on their size and formation conditions. The geochemistry of fe-precipitates(such as jarosite, goethite, and hematite) existent in the CMD-generating coal areas and those that could be considered as a potential source of hazardous elements(HEs)(e.g., Cr) were also studied because these precipitates are relatively stable in extremely low pH conditions. To simplify and improve poorly ordered iron, strontium, and aluminum phase characterization, field emission scanning electron microscopy(fE-SEM), high-resolution transmission electron microscopy(HR-TEM), micro-Raman spectroscopy, and X-ray diffraction(XRD) a

关键词： Brazilian coal mining Environmental impacts Minerals