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Effects of resveratrol and methylprednisolone on biochemical,neurobehavioral and histopathological recovery after experimental spinal cord injury

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Acta Pharmacologica Sinica 2006年第10期27卷 1317-1325页

作者： Ozkan ARIES Suleyman CAYLI Eyup ALTINOZ Iclal GURSES Neslihan YUCEL ayhan kocak Saim YOLOGLU Yusuf TURKOZ Department of Neurosurgery Department of Biochemistry Department of Pathology Department of Emergency Medicine Department of Biostatistics Inonu UniversitySchool of Medicine44280 MalatyaTurkey

Aim:To investigate the neuroprotective effect of resveratrol in an experimentalspinal cord injury(SCI)model in ***:Male Wistar albino rats weighing200-250 g were randomized into six ***-drop trauma was performedfor *** 1 underwent laminectomy *** 2 underwent laminectomyfollowed by *** 3,4,5,and 6 underwent laminectomy followed by SCIand received resveratrol(100 mg/kg),methylprednisolone(MP)(30 mg/kg),resveratrol(100 mg/kg)plus MP(30 mg/kg),and ethanol(2%),*** were divided into two subgroups for biochemical analysis(killed at 24 h aftersurgery)and for neurobehavioral and histopathological evaluation(killed at 6weeks after surgery).Posttraumatic neurological recovery after surgery was re-corded ***:Groups 3 and 5 revealed significantly lower malon-dialdehyde,nitric oxide,xanthine oxidase,and higher glutathione levels than group4(P<0.05).Neurological recovery rates were significantly better in groups 3 and5 than group 4(P<0.05).When spinal trauma size ratios were compared,there wasno significant difference between treatment ***:Resveratroltreatment revealed better biochemical recovery in the acute stage of trauma thanMP *** resveratrol and combined treatment revealed betterneurobehavioral recovery than MP treatment;resveratrol,MP,and combined treat-ment modalities improved histopathological recovery at the same level in the finalstage of the *** studies involving different doses of resveratroland different doses combinations with MP could promise better results as eachdrug has a different anti-oxidative mechanism of action.

关键词： lipid peroxidation resveratrol spinal cord

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Bound State Solutions of Klein-Gordon Equation with the Kratzer Potential

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Chinese Physics Letters 2007年第2期24卷 315-317页

作者： M. kocak Department of Engineering Physics Faculty of Engineering University of Gaziantep 27310 Gaziantep Tiirkiye

The relativistic problem of spinless particle subject to a Kratzer potential is analysed. Bound state solutions for s-waves are found by separating the Klein-Gordon equation into two parts. Unlike the similar works in the literature, the separation make it possible to see explicitly the relativistic contributions, if any, to the solution in the non-relativistic limit.

关键词： DIRAC SCALAR

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Redox active polymer metal chelates for use in flexible symmetrical supercapacitors:Cobalt-containing poly(acrylic acid)polymer electrolytes

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Journal of Energy Chemistry 2021年第4期30卷 145-153页

作者： Emre Cevik ayhan Bozkurt Department of Genetics Research Institute for Research and Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityDammam 31441Saudi Arabia Department of Biophysics Institute for Research and Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityDammam 31441Saudi Arabia

The novel polymer metal chelate electrolytes(polychelates)were prepared by incorporation of cobalt sulfate(Co)into poly(acrylic acid)(PAA)host ***-solid state supercapacitor devices were fabricated using polychelates,PAA-Co X(X:3,5,7,and 10)where X represents the doping fraction(w/w)of Co in *** polymer metal electrolytes were showed excellent bending-stretching properties,thermal stability and electrochemical durability with an optimum ionic conductivity of 3.15×10^(-4) S cm^(-1).Hierarchically porous activated carbon and nano-sized conductive carbon were used to form carbon composite symmetrical device *** electric double-layer capacitor(EDLC)and redox reactions of Co-incorporated polychelates at the interfaces of porous activated carbon provided an optimum specific capacitance of 341.33 F g^(-1) with a device of PAA-Co7,which is at least 15 times enhancement compared to the device of pristine *** PAA-Co7 device also provided energy density of 21.25 Wh kg^(-1) at a power density of 117.69 W kg^(-1).A prolonged cyclic stability of the device exhibited superior capacitive performance after 10,000 charge-discharge cycles and the maintained 90%of its initial *** addition,the supercapacitor with a dimension of 1.5 cm×3 cm containing PAA-Co7 successfully operated the red-blue-green(RGB)LED light.

关键词： Supercapacitor Redox active supercapacitor Cobalt Poly(acrylic acid) Polymer electrolyte

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RELAXED ELASTIC LINES OF SECOND KIND ON ORIENTED SURFACE IN MINKOWSKI SPACE

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Applied Mathematics and Mechanics(English Edition) 2006年第11期27卷 1481-1489页

作者： ayhan TUTAR ayhan SARIO■LUG■L Ondokuz Mayis University Faculty of Science and ArtsDepartment of MathematicsKurupelit-Samsun55139Turkey

The relaxed elastic line of second kind on an oriented surface in the Minkowski space was defined and for the relaxed elastic line of second kind which is lying on an oriented surface the Euler-Lagrange equations were derived. Furthermore, whether these curves lie on a curvature line or not was investigated and some applications were given.

关键词： elastic line geodesic Minkowski space Euler-Lagrange equations

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Polymer Film Supported Bimetallic Au–Ag Catalysts for Electrocatalytic Oxidation of Ammonia Borane in Alkaline Media

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Nano-Micro Letters 2016年第4期8卷 358-370页

作者： Sukriye Ulubay Karabiberoglu Cagri Ceylan kocak Suleyman kocak Zekerya Dursun Department of Chemistry Science FacultyEge University Occupational Health and Safety Department Bergama Vocational SchoolDokuz Eylul University Department of Chemistry Science and Art FacultyCelal Bayar University

Ammonia borane is widely used in most areas including fuel cell *** present paper describes electrochemical behavior of ammonia borane in alkaline media on the poly(p-aminophenol) film modified with Au and Ag bimetallic *** glassy carbon electrode was firstly covered with polymeric film electrochemically and then,Au,Ag,and Au–Ag nanoparticles were deposited on the polymeric film,*** surface morphology and chemical composition of these electrodes were examined by scanning electron microscopy,transmission electron microscopy,electrochemical impedance spectroscopy,X-ray diffraction,and X-ray photoelectron *** was found that alloyed Au–Ag bimetallic nanoparticles are *** measurements indicate that the developed electrode modified by Au–Ag bimetallic nanoparticles exhibit the highest electrocatalytic activity for ammonia borane oxidation in alkaline *** rotating disk electrode voltammetry demonstrates that the developed electrode can catalyze almost six-electron oxidation pathway of ammonia *** results may be attractive for anode materials of ammonia borane fuel cells under alkaline conditions.

关键词： Au-Ag bimetallic nanoparticles Ammonia borane Electrocatalyst Electropolymerization Alkaline media

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Influences of Crystal-Field and Interlayer Coupling Interactions on Dynamic Phase Diagrams of a Mixed-Spin(3/2,2)Bilayer System

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Communications in Theoretical Physics 2018年第6期69卷 741-748页

作者： Mustafa Keskin Yusuf kocak Physics Department Erciyes University38039 KayseriTurkey

Influences of crystal-fields （DA and DB ） and interlayer coupling interactions （J3） on dynamic magnetic critical behaviors of a mixed-spin （3//2, 2） bilayer system under an oscillating magnetic field are investigated by the Glauber-type stochastic dynamics based on the mean-field theory. For this purpose, dynamic phase diagrams are constructed in the reduced temperature and magnetic field amplitude plane for the ferromagnetic/ferromagnetic （FM/FM）, antiferromagnetic/ferromagnetic （AFM/FM） and AFM/AFM interactions in detail. We observe that the influences of DA, DB and Ja interactions parameters on the behavior of the dynamic phase diagrams are very much.

关键词： mixed-spin (3/2 2) bilayer system dynamic phase diagrams, Glauber-type stochastic dynamics mean-field theory

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Remarks on Exact Solvability of Quantum Systems with Spatially Varying Effective Mass

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Chinese Physics Letters 2005年第11期22卷 2742-2745页

作者： B. Goenül M. kocak Department of Engineering Physics Faculty of Engineering University of Gaziantep 27310 Gaziantep Türkiye

Within the frame of a novel treatment we make a complete mathematical analysis of exactly solvable onedimensional quantum systems with non-constant mass, involving their ordering ambiguities. This work extends the results recently reported in the literature and clarifies the relation between physically acceptable effective mass Hamiltonians.

关键词： DEPENDENT EFFECTIVE MASSES SUPERSYMMETRIC APPROACH SCHRODINGER-EQUATION PERTURBATION-THEORY POTENTIALS SEMICONDUCTORS STATES

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On Weighted Estimates of High-Order Riesz-Bessel Transformations Generated by the Generalized Shift Operator

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Acta Mathematica Sinica,English Series 2005年第1期21卷 53-64页

作者： Isman EKINCIOGLU ayhan SERBETCI Department Department of Mathematics Ankara University06100 Tandogan-AnkaraTurkey

In this paper, we establish sufficient conditions on weights which ensurethat high-order Riesz-Bessel transformations generated by the generalized shift operator actboundedly from one weighted L_p-space into another.

关键词： Generalized shift operator Riesz-Bessel transformations

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Comparison of Densiron 68 and 1 000 cSt silicone oil in the management of rhegmatogenous retinal detachment with inferior breaks

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International Journal of Ophthalmology(English edition) 2013年第1期6卷 81-84页

作者： Ibrahim kocak Haci Koc Nisa Hastanesi Fatih cadCobancesme mah Ozel Kent Hastanesi

AIM:To compare success rates and complications of Densiron 68 and 1000cSt silicone oil (SO) in the management of rhegmatogenous retinal detachment (RRD) with inferior breaks (IBs). METHODS:Totally 61 eyes of 61 consecutive patients with RRD with IBs were assigned to pars plana vitrectomy (PPV) with Densiron (n =31) or PPV with SO (n=30) in order of presentation. SO and Densiron removal was performed 3 months after initial surgery. Follow up visits were terminated 6 months after SO removal. ·RESULTS:With a single operation, the Densiron group showed 84% and SO 74% reattachment. With further surgery, both groups showed 90% reattachment. Complications such as cataract, raised intraocular pressure (IOP), inflammatory reaction, macular epiretinal membranes, and emulsification of SO were seen in both groups. CONCLUSION:Densiron and SO are found to have similar success rates and complications.

关键词： retinal detachment silicone oil Densiron heavy silicone oil inferior break

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A Search on Dirac Equation

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Chinese Physics Letters 2007年第11期24卷 3024-3027页

作者： M. kocak, B. Gonül Department of Engineering Physics Faculty of Engineering University of Gaziantep 27310 Gaziantep Turkey

The solutions, in terms of orthogonal polynomials, of Dirac equation with analytically solvable potentials are investigated within a novel formalism by transforming the relativistic equation into a Schrodinger-like one. Earlier results are discussed in a unified framework, and some solutions of a large class of potentials are given.

关键词： coated conductor buffer layer self-epitaxy CeO2

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