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Nuclear Science and Techniques 2018年第7期29卷 177-181页

作者： Turgay Korkut Hatun Korkut Bunyamin Aygun ozkan bayram Abdulhalik Karabulut Department of Nuclear Energy Engineering Faculty of EngineeringSinop University57000 SinopTurkey Department of Physics Faculty of ScienceAtattirk University25040 ErzurumTurkey Department of Materials Sciences and Nanotechnology Engineering Faculty of EngineeringBayburt University69000 BayburtTurkey Agrl Ibrahim Cecen University 04000 AgrlTurkey

In this study,novel rhenium–boron neutronshielding high-temperature-resistant materials were *** considered samples,Re60–B40,Re58–B42,Re50–B50,and Re40–B60,with different concentrations of rhenium and boron were investigated to elucidate their neutron-shielding performances,and compare them with well-known neutron-shielding materials such as the 316 LN quality nuclear *** addition to the experimental studies,Monte Carlo simulations were performed using the FLUKA and GEANT4 codes,where 4.5-MeV neutrons emitted by a ^(241)Am–Be source were *** equivalent dose rates,simulated track lengths,energy balances,and neutron mass absorption cross sections were discussed in detail.

关键词：蒙特卡罗模拟硼中子试验性金 GEANT4 原子钢剂量率力平衡

Analytical solutions of simplified modified Camassa-Holm equation with conformable and M-truncated derivatives:A comparative study

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Journal of Ocean Engineering and Science 2024年第3期9卷 240-250页

作者： Ismail Onder Melih Cinar Aydin Secer Mustafa bayram Department of Mathematical Engineering Yildiz Technical UniversityIstanbulTurkey Graduate School of Natural and Aplied Sciences Yildiz Technical UniversityIstanbulTurkey Department of Computer Engineering Biruni UniversityIstanbulTurkey

This paper extracts some analytical solutions of simplified modified Camassa-Holm(SMCH)equations with various derivative operators,namely conformable and M-truncated derivatives that have been recently *** SMCH equation is used to model the unidirectional propagation of shallowwater *** extended rational sine−cosine and sinh−cosh techniques have been successfully implemented to the considered equations and some kinds of the solitons such as kink and singular have been *** have checked that all obtained solutions satisfy the main equations by using a computer algebraic ***,some 2D and 3D graphical illustrations of the obtained solutions have been *** effect of the parameters in the solutions on the wave propagation has been examined and all figures have been *** derived solutions may contribute to comprehending wave propagation in shallow ***,the solutions might help further studies in the development of autonomous ships/underwater vehicles and coastal zone management,which are critical topics in the ocean and coastal engineering.

关键词： Modified Camassa-Holm equation Conformable derivative M-truncated derivative Extended rational sine−cosine technique Extended rational sinh−cosh technique Exact solutions

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

Association of KRAS Gene and microRNA-124-3p in Sporadic Colorectal Tumours

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Journal of Biosciences and Medicines 2024年第1期12卷 150-161页

作者： ozkan Bagci Department of Medical Genetics School of Medicine Selcuk University Konya Türkiye

Aim: To reveal the exonic and 3’UTR sequences of KRAS, TP53, APC, BRAF, PIK3CA genes in sporadic colorectal tumors and to investigate the clinical relevance of 3’UTR variations in miRNA profiles. Methods: In the study, the exonic and 3’UTR sequences of five genes in 12 sporadic colorectal tumors were extracted by next generation sequencing. In tumors with variation in the 3’UTR region, the changes caused by the variation in the miRNA binding profile were detected. The expression profile of these miRNAs in colorectal and other solid tumors compared to normal tissue was determined. Pathway analysis was performed to determine which signaling pathways miRNAs affect. Results: Case-10 in our study was wild type KRAS and received cetuximab treatment and developed drug resistance. In this case, it was concluded that the expression of KRAS increased and tumorigenesis progressed due to miRNAs that do not bind to this region due to variations in the 3’UTR region. Among these miRNAs, hsa-miR-124-3p was found to have decreased expression in colorectal tumors and to be associated with the ECM-receptor interaction pathway. Conclusion: Variations in the 3’UTR regions of genes critical in the process of carsinogenesis are associated with drug resistance and the process of tumorigenesis.

关键词： Colorectal Tumours Drug Resistance Personalised Medicine microRNA-124-3p

Manakov model of coupled NLS equation and its optical soliton solutions

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Journal of Ocean Engineering and Science 2024年第4期9卷 364-372页

作者： Esra Unal Yilmaz Farid Samsami Khodad Yesim Saglam ozkan Reza Abazari A.E.Abouelregal Mayssam Tarighi Shaayesteh Hadi Rezazadeh Hijaz Ahmad Department of Mathematics Bolu Abant Izzet Baysal UniversityBoluTurkey Faculty of Engineering Technology Amol University of Special Modern TechnologiesAmolIran Department of Mathematics Bursa Uludag UniversityBursaTurkey Department of Mathematics and Applications University of Mohaghegh ArdabiliArdabilIran Department of Mathematics College of Science and ArtsAl-QurayatJouf UniversitySaudi Arabia Basic Sciences Research Unit Jouf UniversitySaudi Arabia Amir Kabir University TehranIran Mathematics in Applied Sciences and Engineering Research Group Scientific Research CenterAl-Ayen UniversityNasiriyah 64001Iraq Section of Mathematics International Telematic University UninettunoCorso Vittorio Emanuele II39Roma 00186Italy

In the field of maritime transport,motion and energy,the dynamics of deep-sea waves is one of the major problems in ocean science.A mathematical modeling of dynamics of solitary waves in deep sea under the two-layer stratification leads to NLS equation,and consequently,the interaction two of them can be formulated by coupled NLS *** this work,extended auxiliary equation and the exp(−ω(χ))-expansion methods are employed to make the optical solutions of the Manakov model of coupled NLS *** methods used in this paper,in addition to providing the analysis of individual wave solutions,also provide general optical *** previously known solutions can be obtained by some special selections of parameters obtained by solving systems of algebraic *** this stage,it is more practical and convenient to apply methods with a symbolic calculation system.

关键词： Manakov model Extended auxiliary equation method Optical solutions Solitons

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

Singular and non-topological soliton solutions for nonlinear fractional differential equations

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Chinese Physics B 2015年第10期24卷 10-15页

作者： ozkan Guner Cankiri Karatekin University Faculty of Economics and Administrative SciencesDepartment of International Trade

In this article, the fractional derivatives are described in the modified Riemann-Liouville sense. We propose a new approach, namely an ansatz method, for solving fractional differential equations（FDEs） based on a fractional complex transform and apply it to solve nonlinear space-time fractional equations. As a result, the non-topological as well as the singular soliton solutions are obtained. This method can be suitable and more powerful for solving other kinds of nonlinear fractional FDEs arising in mathematical physics.

关键词： solitons ansatz method the space-time fractional Boussinesq equation the space-time fractional(2+l)-dimensional breaking soliton equations

Exp-Function Method and Fractional Complex Transform for Space-Time Fractional KP-BBM Equation

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Communications in Theoretical Physics 2017年第8期67卷 149-154页

作者： ozkan Guner Cankiri Karatekin University Faculty of Economics and Administrative Sciences Department of International Trade

In the present article, He＇s fractional derivative, the ansatz method, the （ C / G）-expansion method, and the exp-function method are used to construct the exact solutions of nonlinear space-time fractional Kadomtsev-Petviashvili- Benjamin-Bona Mahony （KP-BBM）. As a result, different types of exact solutions are obtained. Also we have examined the relation between the solutions obtained from the different methods. These methods are an efficient mathematical tool for solving fractional differential equations （FDEs） and it can be applied to other nonlinear FDEs.

关键词： ansatz method exp-function method He's fractional derivative (G'/G)-expansion method spacetime fractional KP-BBM equation

Bright and dark soliton solutions for some nonlinear fractional differential equations

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Chinese Physics B 2016年第3期25卷 52-59页

作者： ozkan Guner Ahmet Bekir Cankiri Karatekin University Faculty of Economics and Administrative Sciences Department of International Trade CankiriTurkey Eskisehir Osmangazi University Art-Science Faculty Department of Mathematics-Computer Eskisehir Turkey

In this work, we propose a new approach, namely ansatz method, for solving fractional differential equations based on a fractional complex transform and apply it to the nonlinear partial space-time fractional modified Benjamin-Bona- Mahoney （mBBM） equation, the time fractional mKdV equation and the nonlinear fractional Zoomeron equation which gives rise to some new exact solutions. The physical parameters in the soliton solutions： amplitude, inverse width, free parameters and velocity are obtained as functions of the dependent model coefficients. This method is suitable and more powerful for solving other kinds of nonlinear fractional PDEs arising in mathematical physics. Since the fractional deriva- tives are described in the modified Riemann-Liouville sense.

关键词： exact solutions ansatz method space-time fractional modified Benjamin-Bona-Mahoney equa-tion time fractional mKdV equation

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