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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

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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

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Indirect Water Consumption:The Scope 3 of Water?Estimation of This Indicator in Sectors Relying on Agriculture

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Journal of Environmental Science and Engineering(A) 2024年第3期13卷 77-85页

作者： Grégory Schneider-Maunoury Nour Emam Maria Fernanda Estrada Cabeza de Vaca Anass Fathi Ricardo Henao Martinez Kahan korkmaz Omar Mghaieth Christianah Ramanalinjatovo Syrine Saidi Department of Economics and Management UniversitéSorbonne Paris Nord99 Av.Jean Baptiste ClémentVilletaneuse 93430France

The aim of this research project is to assess indirect water consumption,that represents the water consumed in the upstream part of the production life *** are provided for agriculture related companies,as agriculture represents 70%of water consumption on *** consumption varies greatly according to the countries where supply chain is *** estimation is attempted for 27 European listed companies in sectors relying on agriculture in its supply chain.A data is estimated for 22 companies,showing that indirect water consumption is much more important than direct *** questions raised through the estimation of indirect water consumption in various subsectors show the interest in this data,which represents the equivalent of Carbon Scope 3 for water issues.

关键词： Water consumption water footprint financial materiality impact materiality sustainability reporting

A Methodology to Predict Fatigue Life of Cast Iron:Uniform Material Law for Cast Iron

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Journal of Iron and Steel Research International 2011年第8期18卷 42-45页

作者： Sinan korkmaz Applied Computing and Mechanics Laboratory Swiss Federal Institute of Technology(EPFL)ENAC/IIC/IMAC

Mechanical, physical and manufacturing properties of east iron make it attractive for many fields of application, such as cranks and cylinder holds. As in design of all metals, fatigue life prediction is an intrinsic part of the design process of structural sections that are made of cast iron. A methodology to predict high-cycle fatigue life of cast iron is proposed. Stress amplitude-strain amplitude, strain amplitude-number of loading cycles relationships of cast iron are investigated. Also, fatigue life prediction in terms of Smith, Watson and Topper parameter is carried out using the proposed method. Results indicate that the analytical outcomes of the proposed methodology are in good accordance with the experimental data for the two studied types of cast iron： EN-GJS-400 and EN-GJS-600.

关键词： high-cycle fatigue fatigue behavior fatigue life prediction cast iron

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Supporting multiple metrics in QoS-aware BGP

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Science China(Information Sciences) 2010年第10期53卷 1947-1962页

作者： korkmaz Turgay Department of Computer Science University of Texas at San Antonio USA

Being an important and yet a challenging problem, the QoS-based routing in the converging Internet has received significant attention from the research community. However, most of the QoS-based routing research is conducted in the context of intra-domain routing, leaving QoS-based inter-domain routing relatively open. In this paper, we focus on QoS-based inter-domain routing and specifically investigate how to enhance the current inter-domain routing protocol (BGP) with QoS extensions. To support multiple QoS metrics, BGP speakers have to advertise multiple routes for each destination. However, this will increase the routing message overhead and make QoS-aware BGP unscalable. To provide scalability without significantly sacrificing the performance, we propose path reduction algorithms called contribution based reduction (CBR) algorithms. Extensive simulations show that the proposed schemes achieve high performance in finding feasible paths with low complexity in terms of message overhead and computation, making the QoS extension to BGP scalable.

关键词： BGP QoS routing multiple constraints

Novel treatment of coronary artery fistulae concealing severe coronary artery lesion： using thrombus aspiration catheter as a delivery guide

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Journal of Geriatric Cardiology 2014年第1期11卷 90-92页

作者： Levent korkmaz Zeydin Acar lhsan Dursun Ali Rlza Akyiz Ayca Ata korkmaz Department of Cardiology Ahi Evren Thorasic And Cardiovascular Surgery Training And Research Hospital Trabzon 61100 Turkey Department of Cardiology Alqaabat Hackali Baba State Hospital Trabzon 61300 Turkey Denartment nf Radinlogy Akcaahat Haekali Baha State Hospital. Trabzon 61300. Turkev3Department of Radiology Akgaabat Hackali Baba State Hospital Trabzon 61300 Turkey

In this case report, we present the occlusion of multiple coronary artery fistulaes originating from proximal left anterior descending （LAD） and fight sinus valsavla and empting to the pulmonary artery at the same place. We occluded LAD fistulae by using thrombus aspira- tion catheter as a delivery guide. To the best of our knowlege, this is the first case of occlusion of coronary fistulaes with the help of throm- bus aspiration catheter. Our experience may suggest that thrombus aspiration catheters can be used in treating coronary artery fistulaes with difficult anotomv.

关键词： Catheter Coronary artery fistulae Coronary angiography Left anterior descending

Optimization of hydrolysis conditions for the production of protein hydrolysates from fish wastes using response surface methodology

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Food Bioscience 2022年第1期45卷 332-339页

作者： Koray korkmaz Bahar Tokur Fatsa Faculty of Marine Science Ordu UniversityOrduTurkey

The recycling of waste from food processing is an important industrial procedure for obtaining protein sources with high added *** this study,trout(Onchorynchus mykiss),anchovy(Engraulis encrasicolus),and whiting(Merlangius merlangus)wastes were *** hydrolyzation procedure was investigated under the optimum predicted conditions defined by time,temperature,and enzyme ratio(E/S)using alkaline protease(pH 8),Protamex(pH 7),and Flavourzyme(pH 7).The hydrolysis conditions that showed the best degree of hydrolysis(DH%)were optimized using response surface methodology(RSM)with the central composite design(CCD)and Box-Behnken design(BBD)*** effects of three independent variables,temperature(40-60℃),time(1-8 h),and enzyme concentrations(1-2%),were examined for model *** was determined that the DH%varies between 50.92%and 74.30% according to the type of fish waste and *** highest degree of hydrolysis was observed from trout waste(74.30%)and the lowest degree from whiting waste(50.92%)with *** this study,it has been shown that different degrees of hydrolysis and protein recovery can be obtained,depending on fish species,waste composition,enzyme type,and hydrolysis method.

关键词： Fish protein hydrolysate Optimization Degree of hydrolysis Protein recovery

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

Ameliorative effects of bombesin and neurotensin on trinitrobenzene sulphonic acid-induced colitis,oxidative damage and apoptosis in rats

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World Journal of Gastroenterology 2008年第8期14卷 1222-1230页

作者： alper Akcan Sebahattin Muhtaroglu Hulya Akgun Hizir Akyildiz Can Kucuk Erdogan Sozuer alper Yurci Namik Yilmaz Department of General Surgery ErciyesUniversity School of Medicine Kayseri 38039 Turkey Department of Biochemistry ErciyeUniversity School of Medicine Kayseri 38039 Turkey Department of Pathology Erciyes University School of Medicine Kayseri 38039 Turkey Department of Gastroenterology Erciyes University School of Medicine Kayseri 38039 Turkey

AIM:To investigate the effects of bombesin (BBS) and neurotensin (NTS) on apoptosis and colitis in an ulcerative colitis model. METHODS:In this study, a total of 50 rats were divided equally into 5 groups. In the control group, no colitis induction or drug administration was performed. Colitis was induced in all other groups. Following the induction of colitis, BBS, NTS or both were applied to three groups of rats. The remaining group (colitis group) received no treatment. On the 11th d after induction of colitis and drug treatment, blood samples were collected for TNF-α and IL-6 level studies. Malondialdehyde (MDA), carbonyl, myeloperoxidase (MPO) and caspase-3 activities, as well as histopathological findings, evaluated in colonic tissues. RESULTS:According to the macroscopic and microscopic findings, the study groups treated with BBS, NTS and BBS + NTS showed significantly lower damage and inflammation compared with the colitis group (macroscopic score, 2.1 ± 0.87, 3.7 ± 0.94 and 2.1 ± 0.87 vs 7.3 ± 0.94;microscopic score, 2.0 ± 0.66, 3.3 ± 0.82 and 1.8 ± 0.63 vs 5.2 ± 0.78, P < 0.01). TNF-α and IL-6 levels were increased significantly in all groups compared with the control group. These increases were significantly smaller in the BBS, NTS and BBS + NTS groups compared with the colitis group (TNF-α levels, 169.69 ± 53.56, 245.86 ± 64.85 and 175.54 ± 42.19 vs 556.44 ± 49.82;IL-6 levels, 443.30 ± 53.99, 612.80 ± 70.39 and 396.80 ± 78.43 vs 1505.90 ± 222.23, P < 0.05). The colonic MPO and MDA levels were significantly lower in control, BBS, NTS and BBS + NTS groups than in the colitis group (MPO levels, 24.36 ± 8.10, 40.51 ± 8.67 and 25.83 ± 6.43 vs 161.47 ± 38.24;MDA levels, 4.70 ± 1.41, 6.55 ± 1.12 and 4.51 ± 0.54 vs 15.60 ± 1.88, P < 0.05). Carbonyl content and caspase-3 levels were higher in the colitis and NTS groups than in control, BBS and BBS + NTS groups (carbonyl levels, 553.99 ± 59.58 and 336.26 ± 35.72 vs 209.76 ± 30.92, 219.76 ± 25.77 and 220.34 ± 36.95

关键词： Bombesin Neurotensin Colitis Apoptosis

Large pedinculated antral hyperplastic gastric polyp traversed the bulbus causing outlet obstruction and iron deficiency anemia: endoscopic removal

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World Journal of Gastroenterology 2003年第3期9卷 633-634页

作者： Murat alper Yusuf Akcan Olcay Belenli Departments of Pathology University of Abant izzet BaysalDüzce Medical FacultyTurkey Departments of Gastroenterology University of Abant izzet BaysalDüzce Medical FacultyTurkey

We present here a large (3 cm) hyperplastic gastric polyp prolapsed into duodenum and caused outlet obstruction and iron deficiency anemia in 60 years old male *** removal was performed successfully.

关键词： Endoscopy, Gastrointestinal Anemia, Iron-Deficiency Gastric Outlet Obstruction Humans Male Middle Aged Polyps Stomach Neoplasms