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BOUNDEDNESS OF HIGH ORDER RIESZ-BESSEL TRANSFORMATIONS GENERATED BY GENERALIZED SHIFT OPERATOR ON Ba SPACES

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Chinese Annals of Mathematics,Series B 2003年第1期24卷 65-72页

作者： A.serbetci i.EKINCIOGLU Department of Mathematics Ankara University 06100 Tandogan-Ankara Turkey.Department of Mathematics Dumlupmar University Kiitahya Turkey.

The boundedness of high order Riesz-Bessel transformations generated by generalized shiftoperator on Ba Spaces (Lpm,v (R+n), am) is examined.

关键词： Generalized shift operator Riesz-Bessel transformations Ba spaces

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

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

Effect of thermal treatment on the swelling and surface roughness of common alder and wych elm wood

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Journal of Forestry Research 2016年第1期27卷 225-229页

作者： ayhan Aytin Suleyman Korkul Program of Furniture and Decoration Duzce Vocational School Duzce University Diizce Turkey Department of Forest Industry Engineering Faculty of Forestry Duzce University Diizce Turkey

Wood heat treatment has increased signifi- cantly in recent years and is still growing as an industrial process to improve some wood properties. We studied the change of swellingand surface roughness of common alder （Alnus glutinosa （L.） Gaertn. ***） and wych elm （Ulmus glabra Huds.） woods after heat treatment at two different temperatures and durations. The temperatures were 180 and 200 ℃ and the durations were 2 and 4 h. A stylus method was employed to evaluate the surface char- acteristics of the samples. Roughness measurements by the stylus method were made in the direction perpendicular to the fiber on the wood surface. Four main roughness parameters, mean arithmetic deviation of profile （Ra）, mean peak-to-valley height （Rz）, root mean square roughness （Rq）, and maximum roughness （Ry） were used to evaluate the effect of heat treatment on the surface characteristics of the specimens. Swelling and surface roughness parameters （Ra, Rz, Ry, and Rq） differed significantly for two temper- atures and two durations of heat treatment. Swelling and surface roughness values decreased with increasing treat- ment temperature and treatment times.

关键词： Heat treatment Swelling Surfaceroughness. Common alder Wych elm

The antibacterial effect of silver anode treatment on raw milk

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Food Bioscience 2022年第6期50卷 1561-1566页

作者： Sergul Cibik ayhan Duran Aksaray University Department of Food EngineeringTR-68100AksarayTurkey

Silver has been used as an indirect antibacterial method by the food *** this study,the antibacterial effect of silver on raw milk was examined using the silver anode *** samples were divided into two groups comprising silver-containing and non-silver-containing ***,the two groups were stored at 5°C,10°C,and 25°*** changes in the bacterial flora of the raw milk samples were observed at hours 0,12,24,and *** antibacterial effect of the silver anode treatment on both groups was observed after 12 *** antibacterial effect increased with increasing storage *** decreases in the Pseudomonas spp.,coliform bacteria,and lactic acid bacteria counts of the silver-containing group were significantly different than those of the control group after 36 h(p<0.05).The decreases in the Pseudomonas *** coliform bacteria counts were greater than the decrease in the lactic acid bacteria *** Pseudomonas *** decreased during the storage period depending on temperature while the growth rates of coliform and lactic acid bacteria decreased with decreasing storage temperature in the silver anode-treated *** strongest antibacterial effect was observed at 25°C for Pseudomonas *** at 5°C for coliform and lactic acid *** results of the study revealed that the silver anode method had a strong antibacterial effect on Pseudomonas *** coliform bacteria and a poor antibacterial effect on lactic acid *** ion release into the milk samples was consistently below the legal limits at all storage temperatures.

关键词： Raw milk Silver anode Antibacterial effect

A comparative assessment of rock mass deformation modulus

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International Journal of Mining Science and Technology 2015年第5期25卷 735-740页

作者： Kadir Karaman Ferdi Cihangir ayhan Kesimal Department of Mining Engineering Karadeniz Technical University

Deformation modulus of a rock mass(E_m) is one of the most important design parameters in construction of rock engineering projects such as underground ***,difficulties are frequently encountered during in-situ tests which are also time-consuming and expensive for determining this *** E_m is often estimated indirectly from proposed equations by different researchers,many of these equations cannot be used in case of problematic rock conditions(thinly bedded,highly jointed rock masses,etc.) as high quality core samples are *** study aims to explore more practical and useful equation for E_m estimation using Rock Quality Designation(RQD) and point load index *** were made between available empirical equations and the proposed E_m equation in terms of the estimation *** comparison tests(ANOVA) showed that E_m can be reliably estimated using proposed equation especially at the preliminary stages of projects.

关键词： Rock mass deformation modulus RQD RMR Q RMi Point load index

Evaluation of Two-center One- and Two-electron Integrals over Slater Type Orbitals

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Chinese Journal of Chemistry 2006年第5期24卷 603-608页

作者： YAKAR, Yusuf OZMEN, ayhan ATAV, Ulfet Department of Physics Faculty of Arts and Science at Aksaray Nigde University Aksaray Turkey Department of Physics Faculty of Arts and Science Selcuk University Konya Turkey

A formulation previously presented by the authors for coulomb integrals was generalized to other two-center integrals, except exchange integral. Within this frame, molecular integrals were expressed in terms of some new functions closely related to the well-known incomplete gamma functions and these functions recursively evaluated. Special issues arising in the case of hybrid integrals were addressed, and the results were compared with the ones found in the literature.

关键词： overlap integral hybrid integral coulomb integral Slater type orbital elliptical coordinate

Explicit solutions of nonlinear wave equation systems

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Chinese Physics B 2013年第1期22卷 39-45页

作者： Ahmet Bekir Burcu ayhan M. Naci zer Mathematics and Computer Science Department Eskisehir Osmangazi University

We apply the （G＇/G）-expansion method to solve two systems of nonlinear differential equations and construct traveling wave solutions expressed in terms of hyperbolic functions, trigonometric functions, and rational functions with arbitrary parameters. We highlight the power of the （G＇/G）-expansion method in providing generalized solitary wave solutions of different physical structures. It is shown that the （G＇/G）-expansion method is very effective and provides a powerful mathematical tool to solve nonlinear differential equation systems in mathematical physics.

关键词： (G'/G)-expansion method long-short-wave interaction system coupled integrable dispersionless system

Impact of central venous port implantation method and access choice on outcomes

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World Journal of Clinical Cases 2023年第1期11卷 116-126页

作者： ayhan Erdemir Huseyin Kemal Rasa Department of General Surgery Anadolu Medical CenterKocaeli 41400Turkey Department of General Surgery Anadolu Medical Center HospitalKocaeli 41400Turkey

BACKGROUND Although the number of patients who need central venous ports for permanent vascular access is increasing,there is still no“gold standard”for the implantation *** To identify the implantation technique that should be *** Two hundred central venous port-implanted patients in a tertiary hospital were retrospectively *** were assigned into two groups according to the access *** first group comprised patients whose jugular veins were used,and the second group comprised patients whose subclavian veins were *** were evaluated regarding age,sex,application side,primary diagnosis,active follow-up period in the hospital,chemotherapy agents administered,number of complications,and the Clavien-Dindo severity *** distribution of the variables was tested with the Kolmogorov-Smirnov test and the Mann-Whitney U ***χ^(2) test was used to analyze the *** There was no statistically significant difference between the groups regarding age,sex,side,number of chemotherapy drugs,and duration of port usage(P>0.05).Only 2 patients in group 1 had complications,whereas in group 2 we observed 19 patients with complications(P<0.05).No port occlusion was found in group 1,but the catheters of 4 patients were occluded in group *** port was infected in group 1 compared to three infected ports in group *** port ruptures,two pneumothorax,one revision due to a mechanical problem,one tachyarrhythmia during implantation,and four suture line problems were also recorded in group 2 *** also showed that it would be sufficient to evaluate and wash ports once every 2 *** Our results robustly confirm that the jugular vein route is safer than the subclavian vein approach for central venous port implantation.

关键词： Permanent vascular access Central venous ports Central venous port implantation methods Jugular vein route Subclavian vein approach Impact of implantation method on outcomes