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BsN:Photometric Light Curve Analysis of Two Contact Binary systems Ls Del and V997 Cyg

Res.a.ch in Astronomy and Astrophysics 2024年第4期24卷 192-213页

作者： Atila Poro Mehmet Tanriver Elham sarvari s.a.an Zavvarei Hossein Azarara Laurent Corp sabrina Baudart As.a.Ababafi Nazanin Kahali Poor Fariba Zare Ahmet bulut Ahmet Keskin Astronomy Department of the Raderon AI Lab. BurnabyBC.Canada Department of Astronomy and s.a.e science Faculty of ScienceErciyes UniversityKayseri TR-38039Turkiye Erciyes University Astronomy and Space Science Observatory Application and Research CenterKayseri TR-38039Turkiye Independent Astrophysics Res.a.cher TehranIran Department of Physics Shahid Beheshti UniversityTehranIran Faculty of Physics Shahid Bahonar University of KermanP.O.Box 76175KermanIran Double s.a.s Committee SociétéAstronomique de FranceParisFrance Dez Astronomical Association Khouzestan ProvinceDezfulIran Department of Physics Amirkabir University of TechnologyTehranIran Department of Physics Faculty of SciencesCanakkale Onsekiz Mart UniversityTerzioglu KampusuTR-17020CanakkaleTurkiye Astrophysics Res.a.ch Center and Observatory Canakkale Onsekiz Mart UniversityTerzioğlu KampusuTR-17020CanakkaleTürkiye

The light curve analyses.a.d orbital period variations for two contact binary s.a.s,Ls Del and V997 Cyg,are presented in this work which was conducted in the frame of the Binary systems of south and North project Ground-based photometric observations were performed at two observatories in *** used the Transiting Exoplanet survey satellite(TEss)data for extracting times of minima and light curve analysis of the targe *** O-C diagram for both systems displays.a.parabolic *** Del and V997 Cyg’s orbital periods.a.e increasing at rates of dP/dt=7.20×10^(-08)days yr^(-1)and dP/dt=2.54×10^(-08)days yr^(-1),respectively Therefore,it can be concluded that mass is being transferred from the less massive s.a. to the more massive component with a rate of dM/dt=-1.96×10^(-7)M_(⊙)yr^(-1)for the Ls Del system,and dM/dt=-3.83×10^(-7)M_(⊙)yr-1for V997 *** parameters of a third possible object in the system are also *** PHysics Of Eclipsing BinariEs Python code was used to analyze the light *** light curve solutions needed a cold s.a.spot due to the asymmetry in the Ls Del system’s light curve *** mass ratio fill-out factor,and s.a. temperature all indicate that both systems.a.e contact binary types in this *** methods were applied to estimate the absolute parameters of the systems:one method relied on the parallax of Gaia DR3,and the other used a P-M *** positions of the systems.a.e also depicted on the M-L,M-R q-L_(ratio),and logM_(tot)-logJ_(0)*** recommend that further observations.a.d investigations be done on the existence of a fourth body in this system.

关键词： (s.a.s:)binaries:eclipsing methods:observational s.a.s:individual(Ls Del and V997 Cyg)

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New Apsidal Motion in Four Eccentric Eclipsing Binaries:V610 Car,V944 Cep,V2815 Ori and V1260 Tau

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Res.a.ch in Astronomy and Astrophysics 2022年第11期22卷 69-77页

作者： Ahmet bulut Department of Physics Faculty of Arts and SciencesCanakkale Onsekiz Mart UniversityTerzioglu CampusTR-17020CanakkaleTurkiye Astrophysics Res.a.ch Centre and Observatory Canakkale Onsekiz Mart UniversityTerzioglu CampusTR-17020CanakkaleTurkiye

This paper presents.a. apsidal motion *** apsidal motion analysis of the eccentric eclipsing binaries V610 Car(P=4.84 days),V944 Cep(P=6.56 days),V2815 Ori(P=2.13 days),and V1260 Tau(P=5.43 days)was performed using minima times from the O-C Gateway database,AsAs-3,AsAs-sN,and TEss,following Lacy’s *** rates of change of periastron longitude were found to be 0.0253±0.0041,0.0347±0.0015,0.0288±0.0010 and0.0294±0°.0079 cycle^(-1),*** the light curve study,the first photometric mass ratio of V944 Cep was found to be q=1.4994±0.0012.A new light curve of V944 Cep was obtained using TEss *** first absolute dimensions of V944 Cep were M_(1)=1.10±0.01 M_(⊙),M_(2)=1.64±0.02 M_(⊙),R_(1)=2.04±0.37 R_(⊙),R_(2)=3.77±0.67 R_(⊙)for the hotter primary component(T_(1)=4925 K),and M_(1)=1.04±0.01 M_(⊙),M_(2)=1.57±0.02 M_(⊙),R_(1)=2.26±0.36 R_(⊙),R_(2)=3.74±0.59 R_(⊙)for the cooler primary component(T_(1)=4475 K).For V610 Car,V944 Cep,V2815 Ori and V1260 Tau,the apsidal motion periods were found to be 188±26 yr,186±8 yr,73±3 yr and 182±38 yr,*** V944 Cep,the internal structural cons.a.ts of the component s.a.s log_(k2,obs)=-2.05±0.01 and log_(k2,theo)=-1.83 for hotter primary component and log_(k2,obs)=-1.97±0.01 and log_(k2,theo)=-1.89 for cooler primary component were calculated.

关键词： (s.a.s:)binaries:eclipsing s.a.s:fundamental parameters techniques:photometric

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Optical solitons.a.d modulation ins.a.ility analysis of the(1+1)-dimensional coupled nonlinear schrodinger equation

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Communications in Theoretical Physics 2020年第2期72卷 17-22页

作者： Tukur Abdulkadir sulaiman Hasan bulut Firat University Faculty of ScienceElazigTurkey Federal University DutseFaculty of ScienceJigawaNigeria Final International University Faculty of EducationKyreniaCyprus

This study successfully reveals the dark,singular solitons,periodic wave and singular periodic wave solutions of the(1+1)-dimensional coupled nonlinear schr?dinger equation by using the extended rational sine-cosine and rational sinh-cosh *** modulation ins.a.ility analysis of the governing model is *** using the suitable values of the parameters involved,the 2-,3-dimensional and the contour graphs of some of the reported solutions.a.e plotted.

关键词： the coupled nonlinear schrodinger’s equation optical soliton modulation ins.a.ility

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The First Photometric study of W UMa Binary system V1833 Ori

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Res.a.ch in Astronomy and Astrophysics 2022年第8期22卷 258-269页

作者： Mehmet Tanrıver Ahmet bulut Astronomy and s.a.e science Science FacultyUniversity of ErciyesTR-38039KayseriTürkiye Erciyes University Astronomy and Space Science Observatory Application and Research CenterTR-38039KayseriTürkiye Department of Physics Faculty of Arts and SciencesÇanakkale Onsekiz Mart UniversityTerzioglu CampusTR-17020ÇanakkaleTürkiye Astrophysics Res.a.ch Center and Observatory Çanakkale Onsekiz Mart UniversityTerzioglu CampusTR-17020ÇanakkaleTürkiye

The first photometric solution in the B,V,R_(c) and I_(c) filters of the short period V1833 Ori eclipsing binary is presented based on new ground-based CCD photometric *** analyzed the BVRI photometric light curves of the system,using PHOEBE 0.31 a,a binary s.a. modeling program,with the Wilson-Devinney method based on Roche geometry to achieve the best accordance with the photometric observations to determine their absolute parameters from the light *** updated the ephemeris of V1833 Ori using two new light curve minima derived by our new observational data from those collected in the literature and analyzed the change of the system's orbital *** O-C analysis indicates that the variations of the orbital period of V1833 Ori with time are increasing at a rate of 3.03×10^(-7)days yr^(-1).The dis.a.ce of V1833 Ori is 173.7±15.6 *** the solutions,we find that V1833 Ori is.a. A-subtype W UMa overcontact binary with q=0.701 mass ratio and f=1.14 fill-out *** HR diagram positions of the eclipsing binary system's components.a.e *** system's.a.solute dimensions were compared to those of similar binaries in the log T_(eff)-log L,logM-logL,1 ogM-logR and logM-log J_(0)diagrams.

关键词： (s.a.s:)binaries:eclipsing s.a.s:fundamental parameters s.a.s:individual(V1833 Ori)

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Various exact wave solutions for KdV equation with time-variable coefficients

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Journal of Ocean Engineering and science 2022年第5期7卷 409-418页

作者： Hajar F.Is.a.l Muhammad Amin s.Murad Hasan bulut Department of Mathematics Faculty of ScienceUniversity of ZakhoZakhoIraq Department of Mathematics College of ScienceUniversity of DuhokDuhokIraq Department of Computer and communications Engineering College of EngineeringNawroz UniversityDuhokIraq Department of Mathematics Faculty of ScienceFirat UniversityElazigTurkey

In this study,we investigate the(2+1)-dimensional Korteweg-De Vries(KdV)equation with the extension of time-dependent coefficients.a.symbolic computational method,the simplified Hirota’s method,and a long-wave method are utilized to create various exact solutions to the suggested *** symbolic computational method is.a.plied to create the Lump solutions.a.d periodic lump ***’s method and a long-wave method are implemented to explore single-,double-and triple-M-lump waves.a.d interaction physical phenomena such as.a. interaction of single-M-lump with one-,twosoliton solutions.a. well as.a.collision of double-M-lump with single-soliton ***,the simplified Hirota’s method is employed to explore complex multi-soliton *** realize dynamics,the gained solutions.a.e drawn via utilizing different arbitrary variable coefficients.

关键词： Hirota’s method Lump solutions Interaction phenomena Complex multi-soliton waves KdV equation

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s.a.le Computer Method for solving Initial Value Problems with Engineering Applications

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Computer systems science & Engineering 2023年第6期45卷 2617-2633页

作者： Mudassir s.a.s Nasreen Kausar Ebru Ozbilge Alper bulut Department of Mathematics.a.d s.a.istics Riphah International UniversityI-14Islamabad44000Pakistan Department of Mathematics Yildiz Technical UniversityFaculty of Arts and ScienceEsenler34210IstanbulTurkey Department of Mathematics&s.a.istics American University of the Middle EastEgaila54200Kuwait

Engineering and applied mathematics disciplines that involve differential equations in general,and initial value problems in particular,include classical mechanics,thermodynamics,electromagnetism,and the general theory of relativity.A reliable,s.a.le,efficient,and consistent numerical scheme is frequently required for modelling and simulation of a wide range of real-world problems using differential *** this study,the tangent slope is.a.sumed to be the contra-harmonic mean,in which the arithmetic mean is used as.a.correction instead of Euler’s method to improve the efficiency of the improved Euler’s technique for solving ordinary differential equations with initial *** s.a.ility,consistency,and efficiency of the system were evaluated,and the conclusions were supported by the presentation of numerical test applications in *** to the s.a.ility analysis,the proposed method has.a.wider s.a.ility region than other well-known methods that are currently used in the literature for solving initial-value *** validate the rate convergence of the numerical technique,a few initial value problems of both s.a.ar and vector valued types were *** proposed method,modified Euler explicit method,and other methods known in the literature have all been used to calculate the absolute maximum error,absolute error at the last grid point of the integration interval under consideration,and computational time in seconds to test the *** Lorentz system was used as.a. example to illustrate the validity of the solution provided by the newly developed *** method is determined to be more reliable than the commonly existing methods with the same order of convergence,as mentioned in the literature for numerical calculations.a.d vis.a.ization of the results produced by all the methods discussed,Mat Lab-R2011b has been used.

关键词： Local truncation error consistency computational time s.a.ility lorentz system

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Characterization of PetM cytochrome b6f subunit 7 domain-containing protein in tomato

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Horticulture Res.a.ch 2023年第12期10卷 14-25页

作者： Mus.a.a.bulut Adriano Nunes-Nesi Alis.a.r R.Fernie saleh Alseekh Root Biology and symbiosis Max-Planck-Institute of Molecular Plant PhysiologyAm Mühlenberg 114476 PotsdamGermany Departamento de Biologia Vegetal Universidade Federal de ViçosaViçosa 36570-900 MGBrazil Plant Metabolomics The Center for Plant Systems Biology and Biotechnology4000 PlovdivBulgaria

In recent years,multiple advances have been made in unders.a.ding the photosynthetic machinery in model *** transfer to horticultural important fruit crops is challenging and time-consuming due to restrictions in gene editing tools.a.d prolonged life ***,we characterize a gene encoding a PetM domain-containing protein in *** CRIsPR/Cas9 knockout lines of the PetM showed impairment in the chloroplastic electron transport rate(ETR),reduced CO_(2) assimilation,and reduction of carotenoids.a.d chlorophylls(Chl)under several light ***,growth-condition-dependent elevation or repression of Chl a/b ratios.a.d de-epoxidation s.a.es were identified,underlining possible impairment compensation ***,under low light and glasshouse conditions,there were basal levels in CO_(2) assimilation and ETR,indicating a potential role of the PetM domain in s.a.ilizing the cytochrome b6f complex(Cb6f)under higher light irradiance and increasing its quantum *** suggests.a.potential evolutionary role in which this domain might s.a.ilize the site of the Cb6f regulating ratios of cyclic and linear electron transport and its potential importance during the conquest of terrestrial ecosystems during which plants were exposed to higher ***,the results.a.e discussed with regard to metabolism and their implication to photosynthesis from an agronomic perspective.

关键词： assimilation metabolism consuming

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The First Photometric study of W UMa Binary system V1833 Ori

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Res.a.ch in Astronomy and Astrophysics 2022年第8期22卷 260-271页

作者： Mehmet Tanr?ver Ahmet bulut Astronomy and s.a.e science Science Faculty University of Erciyes Erciyes University Astronomy and Space Science Observatory Application and Research Center Department of Physics Faculty of Arts and Sciences ?anakkale Onsekiz Mart University Terzioglu Campus Astrophysics Res.a.ch Center and Observatory ?anakkale Onsekiz Mart University Terzioglu Campus

The first photometric solution in the B,V,Rcand Icfilters of the short period V1833 Ori eclipsing binary is presented based on new ground-based CCD photometric *** analyzed the BVRI photometric light curves of the system,using PHOEBE 0.31 a,a binary s.a. modeling program,with the Wilson-Devinney method based on Roche geometry to achieve the best accordance with the photometric observations to determine their absolute parameters from the light *** updated the ephemeris of V1833 Ori using two new light curve minima derived by our new observational data from those collected in the literature and analyzed the change of the system’s orbital *** O-C analysis indicates that the variations of the orbital period of V1833 Ori with time are increasing at a rate of 3.03 ×10-7days *** dis.a.ce of V1833 Ori is 173.7 ± 15.6 *** the solutions,we find that V1833 Ori is.a. A-subtype W UMa overcontact binary with q=0.701 mass ratio and f=1.14 fill-out *** HR diagram positions of the eclipsing binary system’s components.a.e *** system’s.a.solute dimensions were compared to those of similar binaries in the log Teff-log L,logM-logL,1 ogM-logR and logM-log J0diagrams.

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Outcome of surgical treatment of intestinal perforation in typhoid fever

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World Journal of Gastroenterology 2010年第33期16卷 4164-4168页

作者： Aziz sümer zgür Kemik Ahmet Cumhur Dülger Aydemir Olmez Is.a.l Hasirci Erol Kisli Vedat Bayrak Gulay bulut etin Kotan Department of General surgery Medical FacultyUniversity of YüzüncüY1l Department of Gastroenterology Medical FacultyUniversity of YüzüncüY1l Department of Pathology Medical FacultyUniversity of YüzüncüY1l

AIM:To represent our clinical experience in the treatment of intestinal perforation arising from typhoid ***:The records of 22 surgically-treated patients with typhoid intestinal perforation were evaluated ***:There were 18 males.a.d 4 females,mean age 37 years(range,8-64 years).Presenting symptoms were fever,abdominal pain,diarrhea or *** cases were subjected to segmental resection and end-to-end anastomosis,while 3 cases received 2-layered primary repair following debridement,one case with multiple perforations received 2-layered primary repair and end ileostomy,one case received segmental resection and end-to-end anastomosis followed by an end ileostomy,and one case received segmental resection and end ileostomy with mucous fistula *** morbidity was seen in 5 cases.a.d mortality was found in one ***:Intestinal perforation resulting from salmonella typhi is.a. important health problem in Eastern and southeastern *** management of this illness,early and appropriate surgical intervention is vital.

关键词： Intestinal perforation Typhoid fever Treat- ment

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What is the relationship between frailty and orthos.a.ic hypotension in older adults?

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Journal of Geriatric Cardiology 2019年第3期16卷 272-279页

作者： suleyman Emre Kocyigit Pinar soysal Es.a.Ates bulut Ali Ekrem Aydin Ozge Dokuzlar Ahmet Turan Isik Unit for Aging Brain and Dementia Department of Geriatric MedicineFaculty of MedicineDokuz Eylul UniversityIzmirTurkey Department of Geriatric Medicine Bezmialem Vakif UniversityFaculty of MedicineIstanbulTurkey

Background Frailty and orthos.a.ic hypotension (OH),which is common in older adults,is.a.sociated with morbidity and *** relationship between them remains *** aim of the study is to determine whether there is.a.relationship between frailty and *** A total of 496 patients who were admitted to the geriatric clinic and underwent comprehensive geriatric assessment were retrospectively *** a cross-sectional and observational study,OH was measured by the Head-up Tilt Table test at 1,3,and 5 min (respectively,OH1,OH3,and OH5) and the frailty was measured by the Fried’s frailty *** The mean age of all patients was 75.4 ± *** prevalence of females was 69.8%.When the frail people were compared with the pre-frail and the robust ones,the frailty was.a.sociated with *** was no relationship between the groups in terms of OH1 when the pre-frail group was compared with the robust ***3 were higher in the frail group than in the pre-frail group (P st group (P ssociated with frailty s.a.us when they were adjusted for age (P > 0.05).slowness.a.d weakness were associated with OH1 (P s the other components of the Fried’s test were *** Frailty may be a risk factor for *** 1^st min measurements of OH should be routinely evaluated in frail older adults to prevent OH-related poor outcomes.

关键词： Frail Orthos.a.ic hypotension Pre-frail Robust

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