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New lump interaction complexitons to the(2+1)-dimensional Korteweg-de Vries equation with electrostatic wave potential in plasmas

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Journal of Ocean Engineering and Science 2024年第2期9卷 173-177页

作者： Tukur Abdulkadir Sulaiman Abdullahi Yusuf Alrazi Abdeljabbar Mustafa bayram Department of Computer Engineering Biruni UniversityIstanbulTurkey Department of Mathematics Federal University DutseJigawaNigeria Department of Mathematics Near East University TRNCMersin 10Turkey Department of Mathematics Khalifa University for Science and TechnologyAbu DhabiUAE

A soliton is a packet of self-reinforcing waves that maintains its structure when moving at a constant *** are caused by the cancellation of the medium’s nonlinear and dispersive *** plas-mas,the bilinear form of Hirota will be utilized to investigate the(2+1)-dimensional Korteweg-de Vries equation with electrostatic wave *** for complexiton lump interaction have been *** throw further light on the physical qualities of the recorded data,certain 3-dimensional and contour plots are presented to illustrate the interaction elements of these solutions.

关键词： (2+1)-dimensional Korteweg-de Vries equation Multi waves solutions Brether waves solutions Numerical simulations

The Allelopathic Effects of Sunflower and Wheat Root Exudates on Sinapis arvensis and Sinapis alba

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Phyton-International Journal of Experimental Botany 2019年第4期88卷 413-423页

作者： Bengu Turkyilmaz unal Mustafa bayram NigdeÖmer Halisdemir University Faculty of Arts and SciencesDepartment of Biotechnology51240NigdeTurkey NigdeÖmer Halisdemir University Faculty of Arts and SciencesDepartment of Biology51240NigdeTurkey

In this study,we aimed to investigate the allelopathic effects of sunflower and wheat root exudates on the common weeds such as wild mustard and white mustard in our *** root exudates which were obtained by soaking 8 weeks old sunflower and wheat seedlings(20 or 40 seedlings)in 100 mL of distilled water for 3 days were applied to the leaves of wild mustard and white *** order to compare the allelopathic effect,the recommended dose(1 ***^(-1))and twice the recommended dose(2 ***^(-1))of Gromstor(Tribenuron-methyl),a herbicide preferred by farmers for the chemical control of these weeds was also *** allelopathy was performed for wild mustard and white mustard seedlings by the measurement of different physiological and biochemical parameters,such as chlorophyll a,chlorophyll b,total chlorophyll,carotenoid,proline,total protein amounts and superoxide dismutase enzyme *** amounts of total chl and carotenoid in wild mustard leaves decreased in all treatment groups compared to *** highest decrease in total chl(50.93%)and carotenoid(46.69%)was oberved in the treatment of 40 wheat seedlings.100 mL^(-1) distilled *** the white mustard leaves,the amount of total chl in all treatment groups except the treatment group of Gromstor 2 ***^(-1) and carotenoid in all treatment groups increased compared to the *** highest increases again were observed in 40 wheat seedlings.100 mL^(-1) distilled water *** proline amounts in wild mustard and white mustard increased in all treatment *** highest increase was observed for the treatment of 20 wheat seedlings.100 mL^(-1) distilled water in wild mustard(459.69%)and 40 sunflower seedlings.100 mL^(-1) distilled water in white mustard plant(104.70%).In superoxide dismutase enzyme activities,treatments decreased activity except treatment of 40 sunflower seedling root exudate in wild mustard,while increased activity outside commercial herbicide treatment in white *** r

关键词： Allelopathy antioxidant enzymes bioherbicide photosynthetic pigments white mustard wild mustard

Traveling wave structures of some fourth-order nonlinear partial differential equations

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Journal of Ocean Engineering and Science 2023年第2期8卷 124-132页

作者： Handenur Esen Neslihan Ozdemir Aydin Secer Mustafa bayram Department of Mathematical Engineering Yildiz Technical UniversityIstanbul34220Turkey Department of Software Engineering Istanbul Gelisim UniversityIstanbulTurkey Department of Computer Engineering Biruni UniversityIstanbulTurkey

This study presents a large family of the traveling wave solutions to the two fourth-order nonlinear partial differential equations utilizing the Riccati-Bernoulli sub-ODE *** this method,utilizing a traveling wave transformation with the aid of the Riccati-Bernoulli equation,the fourth-order equation can be transformed into a set of algebraic *** the set of algebraic equations,we acquire the novel exact solutions of the integrable fourth-order equations presented in this research *** physical interpretation of the nonlinear models are also detailed through the exact solutions,which demonstrate the effectiveness of the presented *** Bäcklund transformation can produce an infinite sequence of solutions of the given two fourth-order nonlinear partial differential ***,3D graphs of some derived solutions in this paper are depicted through suitable parameter values.

关键词： Fourth-order equations Riccati-Bernoulli sub-ODE method Traveling wave solution Bäcklund transformation

Two-wave,breather wave solutions and stability analysis to the(2+1)-dimensional Ito equation

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Journal of Ocean Engineering and Science 2022年第5期7卷 467-474页

作者： Tukur Abdulkadir Sulaiman Abdullahi Yusuf Evren Hincal Dumitru Baleanu Mustafa bayram Department of Computer Engineering Biruni UniversityIstanbulTurkey Department of Mathematics Federal University DutseJigawaNigeria Department of Mathematics Near East University TRNCMersin 10Turkey Department of Mathematics Cankaya UniversityAnkaraTurkey Institute of Space Sciences MagureleBucharestRomania Department of Medical Research China Medical University HospitalChina Medical UniversityTaichungTaiwan

The current study employs the novel Hirota bilinear scheme to investigate the nonlinear ***,we acquire some two-wave and breather wave solutions to the governing *** are pulsating localized structures that have been used to mimic extreme waves in a variety of nonlinear dispersive media with a narrow banded starting *** recent investigations,on the other hand,imply that breathers can survive in more complex habitats,such as random seas,despite the attributed physical *** authenticity and genuineness of all the acquired solutions agreed with the original *** order to shed more light on these novel solutions,we plot the 3-dimensional and contour graphs to the reported solutions with some suitable *** governing model is also stable because of the idea of linear *** study’s findings may help explain the physics behind some of the challenges facing ocean engineers.

关键词： Governing model Scheme Two-waves and breather wave solution Stability analysis Hirota bilinear

Trajectory Tracking of a Planer Parallel Manipulator by Using Computed Force Control Method

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Chinese Journal of Mechanical Engineering 2017年第2期30卷 449-458页

作者： Atilla bayram Department of Mechanical Engineering Yuzuncu YilUniversityVanTurkey

Despite small workspace, parallel manipulators have some advantages over their serial counterparts in terms of higher speed, acceleration, rigidity, accuracy, manufacturing cost and payload. Accordingly, this type of manipulators can be used in many applications such as in high-speed machine tools, tuning machine for feeding, sensitive cutting, assembly and packaging. This paper presents a special type of planar parallel manipulator with three degrees of freedom. It is constructed as a variable geometry truss generally known planar Stewart platform. The reachable and orientation workspaces are obtained for this manipulator. The inverse kinematic analysis is solved for the trajectory tracking according to the redundancy and joint limit avoidance. Then, the dynamics model of the manipulator is established by using Virtual Work method. The simulations are performed to follow the given planar trajectories by using the dynamic equations of the variable geometry truss manipulator and computed force control method. In computed force control method, the feedback gain matrices for PD control are tuned with fixed matrices by trail end error and variable ones by means of optimization with genetic algorithm.

关键词： Parallel manipulator Variable geometry truss manipulator Planar Stewart platform. Dynamic analysis Computed force control Genetic algorithm

An ultra-sensitive non-enzymatic hydrogen peroxide sensor based on SiO2-APTES supported Au nanoparticles modified glassy carbon electrode

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Progress in Natural Science:Materials International 2019年第4期29卷 390-396页

作者： Lutfullah bayram Muhammet Guler Institute of Science Van Yüzüncü Yil University Department of Chemistry Faculty of Science Van Yüzüncü Yil University

A novel electrochemical sensor based on(3-aminopropyl)triethoxysilane(APTES) functionalized Si02supported Au nanoparticles and Nafion(Nf) as the protective membrane was fabricated for the electrochemical determination of H2O2in contact lens-cleaning *** modification steps of glassy carbon working electrode(GCE) were evaluated by electrochemical impedance spectroscopy(EIS) and cyclic voltammetry(CV).The amperometric results showed that Nf/Au@Si02-APTES/GCE sensor can be used to determine H2O2in contact lens solutions with the linear ranges of 14-180 μM and 0.18-7.15 mM,excellent sensitivities of 2514.6 and894.2 μA mM cm-2,and a low limit of detection(LOD) of 4.25 μM depending upon signal-to-noise ratio of ***/Au@Si02-APTES/GCE exhibited excellent repeatability with relative standard deviation(RDS) of 2.66% and acceptable reproducibility with RSD of 3.35%.The sensor displayed reasonable selectivity in the presence of uric acid,dopamine,ascorbic acid,glucose,mannose,glycine,fructose,histidine,and arginine with RSD less than2.5%.The fabricated Nf/Au@Si02-APTES/GCE sensor has been successfully applied to detect H2O2in contact lens cleaning solutions.

关键词： Au nanoparticles (3-aminopropyl)triethoxysilane SiO2 Nafion Hydrogen peroxide Modified electrode

Kinetic Ising model in a time-dependent oscillating external magnetic field:effective-field theory

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Chinese Physics B 2010年第5期19卷 187-194页

作者： bayram Deviren Osman Canko Mustafa Keskin Institute of Science Erciyes University38039 KayseriTurkey Department of Physics Nevsehir University50300 NevsehirTurkey Department of Physics Erciyes University38039 KayseriTurkey

Recently, Shiet al. [2008 Phys. Left. A 372 5922] have studied the dynamical response of the kinetic Ising model in the presence of a sinusoidal oscillating field and presented the dynamic phase diagrams by using an effective-field theory （EFT） and a mean-field theory （MFT）. The MFT results are in conflict with those of the earlier work of Tome and de Oliveira, [1990 Phys. Rev. A 41 4251]. We calculate the dynamic phase diagrams and find that our results are similar to those of the earlier work of Tome and de Oliveira; hence the dynamic phase diagrams calculated by Shiet al. are incomplete within both theories, except the low values of frequencies for the MFT calculation. We also investigate the influence of external field frequency （w） and static external field amplitude （h0） for both MFT and EFT calculations. We find that the behaviour of the system strongly depends on the values of w and h0.

关键词： kinetic Ising model effective-field theory mean-field theory

Phase diagrams in mixed spin-3/2 and spin-2 Ising system with two alternative layers within the effective-field theory

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Chinese Physics B 2011年第6期20卷 112-124页

作者： bayram Deviren Yasin Polat Mustafa Keskin Department of Physics Nevsehir University Institute of Science Erciyes University Department of Physics Erciyes University

The phase diagrams in the mixed spin-3/2 and spin-2 Ising system with two alternative layers on a honeycomb lattice are investigated and discussed by the use of the effective-field theory with correlations. The interaction of the nearest-neighbour spins of each layer is taken to be positive （ferromagnetic interaction） and the interaction of the adjacent spins of the nearest-neighbour layers is considered to be either positive or negative （ferromagnetic or antiferromagnetic interaction）. The temperature dependence of the layer magnetizations of the system is examined to characterize the nature （continuous or discontinuous） of the phase transitions and obtain the phase transition temperatures. The system exhibits both second- and first-order phase transitions besides triple point （TP）, critical end point （E）, multicritical point （A）, isolated critical point （C） and reentrant behaviour depending on the interaction parameters. We have also studied the temperature dependence of the total magnetization to find the compensation points, as well as to determine the type of behaviour, and N-type behaviour in Neel classification nomenclature existing in the system. The phase diagrams are constructed in eight different planes and it is found that the system also presents the compensation phenomena depending on the sign of the bilinear exchange interactions.

关键词： mixed spin-3/2 and spin-2 Ising system effective-field theory compensation phenomena phase diagrams

Mechanical memory operations in piezotransistive GaN microcantilevers using Au nanoparticleenhanced photoacoustic excitation

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Microsystems & Nanoengineering 2022年第1期8卷 161-174页

作者： Ferhat bayram Durga Gajula Digangana Khan Goutam Koley Holcombe Department of Electrical and Computer Engineering Clemson UniversityClemsonSC 29634USA School of Electrical and Computer Engineering Georgia Institute of TechnologyAtlantaGA 30332USA

Nonlinear oscillations in micro-and nanoelectromechanical systems have emerged as an exciting research area in recent years due to their promise in realizing low-power,scalable,and reconfigurable mechanical memory and logic ***,we report ultralow-power mechanical memory operations utilizing the nonlinear oscillation regime of GaN microcantilevers with embedded piezotransistive AlGaN/GaN heterostructure field effect transistors as highly sensitive deflection *** between the high and low oscillatory states of the nonlinear oscillation regime was demonstrated using a novel phase-controlled opto-mechanical excitation setup,utilizing a piezo actuator and a pulsed laser as the primary and secondary excitation sources,***-based photoacoustic excitation was amplified through plasmonic absorption in Au nanoparticles deposited on a ***,the minimum switching energy required for reliable memory operations was reduced to less than a picojoule(pJ),which translates to one of the lowest ever reported,when normalized for mass.

关键词： excitation operations cantilever