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Exact Solutions to (3+1) Conformable Time Fractional Jimbo–Miwa,Zakharov–Kuznetsov and Modified Zakharov–Kuznetsov Equations

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Communications in Theoretical Physics 2017年第5期67卷 479-482页

作者： alper Korkmaz Department of Mathematics Cankiri Karatekin UniversityCankiriTurkey

Exact solutions to conformable time fractional (3+1)-dimensional equations are derived by using the modified form of the Kudryashov method. The compatible wave transformation reduces the equations to an ODE with integer orders. The predicted solution of the finite series of a rational exponential function is substituted into this *** resultant polynomial equation is solved by using algebraic operations. The method works for the Jimbo–Miwa, the Zakharov–Kuznetsov, and the modified Zakharov–Kuznetsov equations in conformable time fractional forms. All the solutions are expressed in explicit forms.

关键词： fractional (3+1)-dimensional Jimbo–Miwa equation fractional modified Zakharov–Kuznetsov equation modified Kudryashov method fractional Zakharov–Kuznetsov equation exact solutions

Physical,Anatomical,and Photochemical Analyses of Some ExoticWood Species Submitted to Heat Treatment

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Journal of Renewable Materials 2021年第8期9卷 1485-1501页

作者： alper Aytekin Hikmet Yazıcı Bartın University Department of Management Information SystemsBartın74100Turkey Zonguldak Bulent Ecevit University Çaycuma Vocational SchoolZonguldak67100Turkey

The objective of this study was to evaluate the effect of heat treatment on decorative properties including glossiness,color coordinates including lightness(L),blue-yellow(b^(*))and red-green(a^(*)),hardness(shore-D)morphological characterization and thermal properties of some exotic wood *** treatment of anigre(Aningeria altissima),cedrorana(Cedrelinga catenaeformis),cemara(Casuarina sumatrana)and coronilla(Scutia buxifolia)wood materials were performed in an oven with a programmable controller at 210°C for 3 *** obtained samples were conditioned in a climate cabin and the decorative properties,morphological characterization with scanning electron microscopy(SEM)and thermal properties with thermogravimetric analyzer(TGA)of the obtained samples were *** test results showed that color got darker with heat treatment,specifically L and b^(*)decreased,and a^(*)increased for anigre and cedrorana but a^(*)decreased for cemara and *** glossiness for all samples generally increased from 20°to 85°but heat treatment decreased the *** density generally decreased with heat treatment and decrease ratio in the density was found to be in range from 5.6%to 10.6%.According to the SEM analysis,some cracks,pit aspiration and layer decomposition in the micro level of the wood structure were *** showed that heat treatment makes thermally more stable *** a result,it can be said that heat treatment improved the decorative properties of the exotic wood.

关键词： Heat treatment color gloss hardness anigre wood cedrorana wood cemara wood coronilla wood

Dark Soliton Solutions of Space-Time Fractional Sharma–Tasso–Olver and Potential Kadomtsev–Petviashvili Equations

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Communications in Theoretical Physics 2017年第2期67卷 182-188页

作者： Ozkan Guner alper Korkmaz Ahmet Bekir Cankiri Karatekin University Department of International Trade Cankiri 18200 Turkey ankiri Karatekin University Department of Mathematics Cankiri 18200 Turkey Eskisehir Osniangazi University Department of Mathematics & Computers Eskisehir 26200 Turkey

Dark soliton solutions for space-time fractional Sharma–Tasso–Olver and space-time fractional potential Kadomtsev–Petviashvili equations are determined by using the properties of modified Riemann–Liouville derivative and fractional complex transform. After reducing both equations to nonlinear ODEs with constant coefficients, the tanh ansatz is substituted into the resultant nonlinear ODEs. The coefficients of the solutions in the ansatz are calculated by algebraic computer computations. Two different solutions are obtained for the Sharma–Tasso–Olver equation as only one solution for the potential Kadomtsev–Petviashvili equation. The solution profiles are demonstrated in 3D plots in finite domains of time and space.

关键词： exact solution modified Riemann–Liouville derivative space-time fractional Sharma–Tasso–Olver equation space-time fractional potential Kadomtsev–Petviashvili equation

Glass Fibre Reinforced Concrete Rebound Optimization

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Computer Modeling in Engineering & Sciences 2017年第2期113卷 203-218页

作者： Sadik alper YILDIZEL Muhammet Ensar YIGIT Gokhan KAPLAN Karamanoglu MehmetBey UniversityFaculty of EngineeringCivil Engineering DepartmentKaraman/T URKEY Celal Bayar University Faculty of EngineeringCivil Engineering DepartmentManisa/TURKEY Kastamonu University Kastamonu Vocational SchoolKastamonu/TURKEY

Glass fibre reinforced concrete placement technique generates losses due to rebound effects of the already sprayed concrete *** concrete amount cause a significant difference between the initial mix design and emplaced mix *** from the structural differences,it comes with a cost increase which was resulted by the splashed concrete *** factors such as viscosity and quantity of mixes dominate this rebound amount in sprayed glass fibre reinforced concrete applications depending on production technologies and processes;however,this research focuses on the spray distance and the angle of the spray gun which mainly effects the rebound amount in glass fibre reinforced concrete *** paper aims to understand the required angle and distance for glass fibre reinforced concrete mixes having on-site plastic viscosity *** fibre reinforced mixtures were also modelled with a finite element method based software and,the analysis results were compared with production line *** of the analysis and on-site studies showed a decisive correlation between,discharge distance,discharge angle and the viscosity of the concrete.

关键词： Glass fibre glass fibre reinforced concrete finite elements method spray distance spray Angle

Psychiatric Symptoms in Rapid-onset Obesity with Hypothalamic Dysfunction, Hypoventilation, and Autonomic Dysregulation Syndrome and its Treatment： A Case Report

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Chinese Medical Journal 2016年第2期129卷 242-243页

作者： Habib Erensoy Mehmet Emin Ceylan alper Evrensel Department of Psychiatry Uskudar University Istanbu134330 Turkey

To the Editor： Rapid-onset obesity with hypothalamic dysfunction, hypoventilation, and autonomic dysregulation （ROHHAD） syndrome is a rare disease. It is diagnosed in childhood （usually at 3-4 years of age）. It a... 详细信息

关键词： Rapid-onset hypothalamic dysfunction autonomic dysregulation

Gastric pneumatosis intestinalis associated with malignancy:An unusual case report

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World Journal of Gastroenterology 2009年第6期15卷 758-760页

作者： Ahmet Bilici Berrin Karadag alper Doventas Mesut Seker Department of Medical Oncology Dr.Lutfi Kirdar Kartal Education and Research HospitalKartal 34210 IstanbulTurkey Department of Internal Medicine Sisli Etfal Education and Research Hospital34210 IstanbulTurkey Department of Internal Medicine Istanbul Education and Research Hospital34210 IstanbulTurkey

Pneumatosis intestinalis(PI)is an uncommon disease defined as gas-filled cysts that are found in the wall of the gastrointestinal(GI)*** exact causes of PI are still unclear,but it may associated with coexisting diseases,such as some GI disorders,connective tissue disease,some medication and drugs,and rarely *** most common localization is the small *** PI secondary to malignancy has been rarely *** report on a 94-year- old man with gastric PI associated with inoperable adenocarcinoma localized in the *** the gastrojejunostomy and choledochojejunostomy bypass,his general condition improved and PI disappeared,but he died due to poor performance status and malignancy 6 mo *** suggest that in patients presenting with PI,malignancy should be considered in the differential diagnosis.

关键词： Pneumatosis intestinalis Malignancy Adenocarcinoma

Neutronic study on the effect of first wall material thickness on tritium production and material damage in a fusion reactor

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Nuclear Science and Techniques 2022年第4期33卷 33-50页

作者： HacıMehmet S¸ahin Güven Tunc¸ alper Karakoc¸ Melood Mohamad Omar Department of Energy Systems Engineering Technology FacultyKarabuk UniversityKarabukTurkey Department of Energy Systems Engineering Technology FacultyGazi UniversityAnkaraTurkey Department of Energy Systems Engineering Institute of Graduate ProgramsKarabuk UniversityKarabukTurkey

In this study,the effects of changing first wall materials and their thicknesses on a reactor were investigated to determine the displacement per atom(DPA)and gas production(helium and hydrogen)in the first wall,as well as the tritium breeding ratio(TBR)in the coolant and tritium breeding ***,the modeling of the magnetic fusion reactor was determined based on the blanket parameters of the International Thermonuclear Experimental Reactor(ITER).Stainless steel(SS 316 LNIG),Oxide Dispersion Strengthened Steel alloy(PM2000 ODS),and China low-activation martensitic steel(CLAM)were used as the first wall(FW)*** family molten salt materials(FLiBe,FLiNaBe,FLiPb)and lithium oxide(LiO_(2))were considered the coolant and tritium production material in the blanket,*** transport calculations were performed using the wellknown 3D code MCNP5 using the continuous-energy Monte Carlo *** built-in continuous energy nuclear and atomic data libraries along with the Evaluated Nuclear Data file(ENDF)system(ENDF/B-V and ENDF/B-VI)were ***,the activity cross-section data library CLAW-IV was used to evaluate both the DPA values and gas production of the first wall(FW)*** interface computer program written in the FORTRAN 90 language to evaluate the MCNP5 outputs was developed for the fusion reactor *** results indicated that the best TBR value was obtained for the use of the FLiPb coolant,whereas depending on the thickness,the first wall replacement period in terms of radiation damage to all materials was between 6 and 11 years.

关键词： ITER First wall material Material damage Tritium breeding ratio Fluorides family molten salt materials

CO_(2) utilization: Developments in conversion processes

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Petroleum 2017年第1期3卷 109-126页

作者： Erdogan alper Ozge Yuksel Orhan Hacettepe University Department of Chemical EngineeringAnkaraTurkey

Carbon dioxide capture,utilization and storage(CCUS)eincluding conversion to valuable chemicals-is a challenging contemporary issue having *** prospect to utilize carbon dioxide(CO_(2))as a feedstock for synthetic applications in chemical and fuel industries-through carboxylation and reduction reactions-is the subject of this *** statute of the heterogeneously catalyzed hydrogenation,as well as the photocatalytic and electrocatalytic activations of conversion of CO_(2) to value-added chemicals is *** CO_(2) as a viable alternative to natural gas and oil as carbon resource for the chemical supply chain,three stages of development;namely,(i)existing mature technologies(such as urea production),(ii)emerging technologies(such as formic acid or other single carbon(C1)chemicals manufacture)and(iii)innovative explorations(such as electrocatalytic ethylene production)have been identified and highlighted.A unique aspect of this review is the exploitations of reactions of CO2 ewhich stems from existing petrochemical plants-with the commodity petrochemicals(such as,methanol,ethylene and ethylene oxide)produced at the same or nearby complex in order to obtain value-added products while contributing also to CO_(2) fixation *** worldwide ethylene oxide facilities,it is recognized that they produce about 3 million tons of CO2 *** a CO_(2) resource,which is already separated in pure form as a requirement of the process,should best be converted to a value-added chemical there avoiding current practice of discharging to the *** potential utilization of CO_(2),captured at power plants,should also been taken into consideration for *** CO_(2) source,which is potentially a raw material for the chemical industry,will be available at sufficient quality and at gigantic quantity upon realization of on-going tangible capture *** resulting from carboxylation reactions are obviou

关键词： Carbon capture and conversion Carboxylation Catalysis C1-chemicals CO_(2)utilization Copolymerization Dream reactions Electrocatalysis Photocatalysis Polymerization Reduction

Stable Computer Method for Solving Initial Value Problems with Engineering Applications

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Computer Systems Science & Engineering 2023年第6期45卷 2617-2633页

作者： Mudassir Shams Nasreen Kausar Ebru Ozbilge alper Bulut Department of Mathematics and Statistics Riphah International UniversityI-14Islamabad44000Pakistan Department of Mathematics Yildiz Technical UniversityFaculty of Arts and ScienceEsenler34210IstanbulTurkey Department of Mathematics&Statistics American University of the Middle EastEgaila54200Kuwait

Engineering and applied mathematics disciplines that involve differential equations in general,and initial value problems in particular,include classical mechanics,thermodynamics,electromagnetism,and the general theory of relativity.A reliable,stable,efficient,and consistent numerical scheme is frequently required for modelling and simulation of a wide range of real-world problems using differential *** this study,the tangent slope is assumed to be the contra-harmonic mean,in which the arithmetic mean is used as a correction instead of Euler’s method to improve the efficiency of the improved Euler’s technique for solving ordinary differential equations with initial *** stability,consistency,and efficiency of the system were evaluated,and the conclusions were supported by the presentation of numerical test applications in *** to the stability analysis,the proposed method has a wider stability region than other well-known methods that are currently used in the literature for solving initial-value *** validate the rate convergence of the numerical technique,a few initial value problems of both scalar and vector valued types were *** proposed method,modified Euler explicit method,and other methods known in the literature have all been used to calculate the absolute maximum error,absolute error at the last grid point of the integration interval under consideration,and computational time in seconds to test the *** Lorentz system was used as an example to illustrate the validity of the solution provided by the newly developed *** method is determined to be more reliable than the commonly existing methods with the same order of convergence,as mentioned in the literature for numerical calculations and visualization of the results produced by all the methods discussed,Mat Lab-R2011b has been used.

关键词： Local truncation error consistency computational time stability lorentz system