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Prediction of wear loss quantities of ferro-alloy coating using different machine learning algorithms

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Friction 2020年第1期8卷 107-114页

作者： Osman ALTAY Turan GURGENC mustafa ULAS Cihan OZEL Software Engineering Firat UniversityElazig 23119Turkey Automotive Engineering Firat UniversityElazig 23119Turkey Mechanical Engineering Firat UniversityElazig 23119Turkey

In this study,experimental wear losses under different loads and sliding distances of AISI 1020 steel surfaces coated with(wt.%)50FeCrC‐20FeW‐30FeB and 70FeCrC‐30FeB powder mixtures by plasma transfer arc welding were *** dataset comprised 99 different wear amount measurements obtained experimentally in the *** linear regression(LR),support vector machine(SVM),and Gaussian process regression(GPR)algorithms are used for predicting wear quantities.A success rate of 0.93 was obtained from the LR algorithm and 0.96 from the SVM and GPR algorithms.

关键词： surface coating plasma transfer arc(PTA)welding wear prediction machine learning algorithms

Relationship between non-alcoholic fatty liver disease and coronary heart disease

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World Journal of Clinical Cases 2020年第20期8卷 4688-4699页

作者： Ugur Arslan mustafa Yenerçağ Department of Cardiology University of Health Sciences Samsun Training and Research HospitalSamsun 55400Turkey

Non-alcoholic fatty liver disease(NAFLD)is the leading cause of chronic liver disease and considered a liver manifestation of metabolic *** is in close relationship with insulin resistance,obesity,diabetes mellitus,all of which increase risk of cardiovascular disease(CVD).Besides,many studies point out that NAFLD independently contributes to the development of atherosclerosis and *** the other hand,CVDs are the leading cause of death in NAFLD *** pathophysiological changes and molecular mechanisms play an important role in NAFLD for CVD *** is common in NAFLD,which also mainly contributes to the CVD formation and *** studies linking atherosclerotic CHD and NAFLD are present in the *** CHD,mainly detected by coronary computed tomography views,have been detected more common in NAFLD *** of NAFLD has been found to be more common in patients with severe CHD and in stable CHD,NAFLD has been found to be associated with more diffuse *** acute coronary syndromes,especially in acute myocardial infarction,patients with NAFLD have been found to have poor prognosis when compared with NAFLD free *** this review,our aim is to evaluate the relationship between NAFLD and CHD in detail and go over the pathophysiological mechanisms underlying this relationship.

关键词： Fatty liver Hepatosteatosis Coronary heart disease Atherosclerosis Cardiovascular Artery

An extract of Hypericum perforatum induces wound healing through inhibitions of Ca^(2+) mobilizations,mitochondrial oxidative stress and cell death in epithelial cells:Involvement of TRPM2 channels

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BIOCELL 2019年第4期43卷 271-283页

作者： FUAT USLUSOY mustafa NAZIROGLU Department of Plastic Reconstructive and Aesthetic Surgery Faculty of MedicineSuleyman Demirel UniversityIspartaTurkey Neuroscience Research Center Suleyman Demirel UniversityIspartaTurkey Drug Discovery Unit BSN HealthAnalysis and Innovation Ltd.Inc.TeknokentIspartaTurkey

The wound is induced by several mechanical and metabolic *** the etiology of the wound recovery,excessive oxidative stress,calcium ion(Ca^(2+))influx,and apoptosis have important ***^(2+)-permeable TRPM2 channel is activated by oxidative *** roles of Hypericum perforatum extract(HP)on the mechanical nerve injury-induced apoptosis and oxidative toxicity through regulation of TRPM2 in the experimental animals were recently *** potential protective roles in HP treatment were evaluated on the TRPM2-mediated cellular oxidative toxicity in the renal epithelium(MPK)*** cells were divided into three groups as control,wound,and wound+HP treatment(75μM for 72 h).Wound diameters were more importantly decreased in the wound+HP group than in the wound *** addition,the results of laser confocal microscopy analyses indicated protective roles of HP and TRPM2 antagonists(N-(p-Amylcinnamoyl)anthranilic acid and 2-aminoethyl diphenylborinate)against the wound-induced increase of Ca^(2+) influx and mitochondrial ROS *** wound-induced increase of early(annexin V-FITC)apoptosis and late(propidium iodide)apoptosis were also decreased in the cells by the HP *** conclusion,HP treatment acted protective effects against wound-mediated oxidative cell toxicity and apoptosis through TRPM2 *** effects may be attributed to their potent antioxidant effect.

关键词： Apoptosis Hypericum perforatum Oxidative stress TRPM2 channel Wound

Incorporating the Istanbul-Ankara high-speed railway into the Belt and Road Initiative:Negotiation,institutional alignment and regional development

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Journal of Geographical Sciences 2021年第5期31卷 747-762页

作者： Seth SCHINDLER mustafa Kemal BAYIRBAG GAO Boyang Global Development Institute University of ManchesterM139PL ManchesterUnited Kingdom Department of Political Science and Public Administration Middle East Technical UniversityAnkara 06800Turkey School of Management Science and Engineering Central University of Finance and EconomicsBeijing 100081China

This article contributes to a small but growing body of multi-sited and multi-scalar research on the Belt and Road *** focus on relations at the national,regional and international scales,and present original research from China and Turkey,to show how the Istanbul-Ankara high-speed railway has served as a testing ground for China's Belt and Road Initiative(BRI).Its construction was initially funded by the European Investment Bank,but it is now part of the backbone of the Turkish Government's Middle Corridor plan which enhances west-east connectivity and integration with the Caucasus and Central *** show that in contrast to multinational corporations from the OECD that seek to remain footloose,Chinese state-owned enterprises(SOEs)seek to adapt to,apprehend and ultimately shape local *** the case of Turkey this proved difficult given its institutional alignment with the European ***,while the railway project was completed successfully by a consortium led by a Chinese SOE,Turkey's dynamic and complex regulatory environment discourages Chinese SOEs in the infrastructure *** conclude that the Turkish and Chinese governments are currently pursuing complementary territorial visions yet their cooperation is project-based and pragmatic.

关键词： Belt and Road Initiative infrastructure high speed rail regional development Turkey China

A Study on Monotone Self-Dual Boolean Functions

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Acta Mathematicae Applicatae Sinica 2017年第1期33卷 43-52页

作者： mustafa ALTUN Marc D.RIEDEL Electronics and Communication Engineering Istanbul Technical University Electrical and Computer Engineering University of Minnesota

This paper shows that monotone self-dual Boolean functions in irredundant disjuntive normal form （IDNF） do not have more variables than disjuncts. Monotone self-dual Boolean functions in IDNF with the same number of variables and disjuncts are examined. An algorithm is proposed to test whether a monotone Boolean function in IDNF with n variables and n disjuncts is self-dual. The runtime of the algorithm is O（n3）.

关键词： duality problem monotone Boolean functions self-dual Boolean functions

Effects of Material Properties and Punch Tip Radius on Spring-Forward in 90° V Bending Processes

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Journal of Iron and Steel Research International 2013年第10期20卷 64-69页

作者： Dilipak Hakan zdemir mustafa Sarikaya Murat Manufacturing Department Technology FacultyGazi University Mechanical Education Institute of Science and TechnologyGazi University Machine and Metal Technology Department Vocational High SchoolSinop University

Bending process is one of the most significant fields of application of sheet metal die. Sheet metals are ex posed to some spring back or spring-forward depending on elastic deformation following bending process. S235JR （1. 003 8） materials having a thickness of 4 mm were bent with 90° punches having 5 different tip radiuses. The ben- ding process was carried out by making the punch waited on the material for 30 s （30 s wait bending） and by remo ving the punch without waiting （direct bending）. Specimens were prepared in three forms as non-heat-treated, nor- malized and tempered. At the same time, all experiments were performed at a deformation speed of 25 mm/min. As a result, it was determined that as punch tip radius increased, the amount of spring-forward decreased. Although normalizing process applied to specimens increased the amount of spring-forward, tempering process decreased it. The amount of spring-forward was decreased in 30 s wait bending process.

关键词： spring-forward V die bending metal forming heat treatment

Acarbose is again on the stage

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World Journal of Diabetes 2022年第1期13卷 1-4页

作者： mustafa Altay Department of Endocrinology and Metabolism University of Health Sciences TurkeyKeçiören Health Administration and Research CenterKeçiören 06290AnkaraTurkey

Acarbose is an agent that has been used to treat type 2 diabetes for about 30 years;it prevents postprandial hyperglycemia by inhibiting carbohydrate digestion in the small *** incretin-based treatments have been preferred over the last 10 to 15 years,the use of acarbose is not as common in treating type 2 diabetes as *** studies have shown that acarbose also produces a weight-loss effect by increasing glucagon-like peptide 1(GLP-1).The positive effect of acarbose on GLP-1,and increasing evidence that it provides cardiovascular protection,suggests that acarbose may again be considered among the first-choice antidiabetic agents,as it was in the 1990s.

关键词： Acarbose Cardiovascular protection Glucagon-like peptide 1 Obesity Waist-to-height ratio

Neuroprotective effect of edaravone in experimental glaucoma model in rats: a immunofluorescence and biochemical analysis

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International Journal of Ophthalmology(English edition) 2015年第2期8卷 239-244页

作者： Arzu Toruk Aksar Nursen Yuksel mustafa Gok mustafa Cekmen Yusuf Caglar Department of Ophthalmology Kocaeli University Faculty of Medicine Department of Ophthalmology Ministry of Health-Ordu University Research and Training Hospital Department of Biochemistry Kocaeli University Faculty of Medicine

AIM: To evaluate the neuroprotective activity of systemically administered edaravone in early and late stage of experimental glaucoma in ***: In this study, 60 Wistar albino rats were used. Experimental glaucoma model was created by injecting hyaluronic acid to the anterior chamber once a week for 6wk in 46 of 60 subjects. Fourteen subjects without any medication were included as control *** administered intraperitoneally 3 mg/kg/d to the 15 of 30 subjects starting at the onset of glaucoma induction and also administered intraperitoneally3 mg/kg/d to the other 15 subjects starting at three weeks after the onset of glaucoma induction. The other16 subjects who underwent glaucoma induction was administered any therapy. Retinal ganglion cells(RGCs)have been marked with dextran tetramethylrhodamine(DTMR) retrograde at the end of the sixth week and after48 h, subjects were sacrificed by the method of cardiac perfusion. Alive RGC density was assessed in the wholemount retina. Whole-mount retinal tissues homogenized and nitric oxide(NO), malondialdehyde(MDA) and total antioxidant capacity(TAC) values were measured ***: RGCs counted with Image-Pro Plus program, in the treatment group were found to be statistically significantly protected, compared to the glaucoma group(Bonferroni,P <0.05). The neuroprotective activity of edaravone was found to be more influential byadministration at the start of the glaucoma *** significant lower NO levels were determined in the glaucoma group comparing treatment groups(Bonferroni, P <0.05). MDA levels were found to be highest in untreated glaucoma group, TAC levels were found to be lower in the glaucoma induction groups than the control group(Bonferroni, P <0.05).CONCLUSION: Systemic administration of edaravone in experimental glaucoma showed potent neuroprotective activity. The role of oxidative stress causing RGC damage in glaucoma was supported by this study results.

关键词： antioxidant edaravone glaucoma neuroprotection

Symmetry solutions of a nonlinear elastic wave equation with third-order anharmonic corrections

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Applied Mathematics and Mechanics(English Edition) 2009年第8期30卷 1017-1026页

作者： M.Tahir mustafa Khalid Masood Department of Mathematics and Statistics King Fahd University of Petroleum and MineralsDhahran 31261 Saudi Arabia Department of Mathematics Hafr Al-Batin Community College King Fahd University of Petroleum and MineralsP. O. Box 5087 Dhahran 31261 Saudi Arabia

Lie symmetry method is applied to analyze a nonlinear elastic wave equation for longitudinal deformations with third-order anharmonic corrections to the elastic energy. Symmetry algebra is found and reductions to second-order ordinary differential equations （ODEs） are obtained through invariance under different symmetries. The reduced ODEs are further analyzed to obtain several exact solutions in an explicit form. It was observed in the literature that anharmonic corrections generally lead to solutions with time-dependent singularities in finite times singularities, we also obtain solutions which Along with solutions with time-dependent do not exhibit time-dependent singularities.

关键词： group invariant solutions Lie symmetries nonlinear elasticity equations partial differential equations