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Öğe First Forbidden Beta Transitions of ½+- ½- States for ?J=0 In Spherical Odd Mass Nuclei(Alanya Alaaddin Keykubat Üniversitesi, 2019) Selam, CevadIn this study, the first forbidden beta transitions of states for ?J=0 have been investigated in spherical odd mass nuclei. The pn-QRPA model is used with a schematic separable interaction to calculate first forbidden transitions by considering the Woods–Saxon potential basis in the Chepurnov parameterization. The transition probabilities in this model have been calculated within the ?-approximation. ? is a dimensionless parameter representing the magnitude of the Coulomb energy and is approximated by 1.2ZA-1/3 [1]. Logft values calculated of first forbidden transitions are found to be in better agreement with measured data.Öğe First Forbidden ß-Decay Logft Values of Neutron Rich Te Isotopes(Alanya Alaaddin Keykubat Üniversitesi, 2019) Çakmak, Necla; Abdul, MuneemNeutral tellurium detected in three metal-poor stars enriched by products of r-process nucleosynthesis by using near-ultraviolet spectra obtained with the Space Telescope Imaging Spectrograph on board the Hubble Space Telescope. Tellurium (Te, Z=52) was found at the second r-process peak (A?130) associated with N=82 neutron shell closure. The beta decay rates of unstable isotopes may be drastically changed under stellar conditions. In this work, we have been investigated the first forbidden (|?J|=0, 1 and 2) transitions strength of some neutron rich Tellurium isotopes. The theoretical framework is based on a proton neutron quasiparticle random phase approximation (pn-QRPA) in the particle-hole (ph) channel. The transition probabilities in the Woods-Saxon potential basis have been calculated within the x-approximation. The calculated first forbidden b-decay logft values are in better agreement with experimental data.Öğe Investigation of the Chemical Effect Using EDXRF Spectrometry on the Lines of Bromine K? and Kß X-Ray Emission Spectra(Alanya Alaaddin Keykubat Üniversitesi, 2019) Hatipoğulları, Merve Meltem; Çümen, Harun; Yalçın, Paşa; Durdağı, Sevil PorikliBromine is used in many areas such as agricultural chemicals, dyestuffs, insecticides, pharmaceuticals and chemical intermediates. Some uses are being phased out for environmental reasons, but new uses continue to be found. In this work, the effects caused by different chemical environments in several bromine compounds were studied using EDXRF spectrometry. The samples were excited by 59,5 keV gamma rays emitted from Am-241 radioisotope source and characteristic K X-rays emitted from the samples were counted by Si(Li) detector. Modifications in values of energy of X-Ray line, full width at half maximum (FWHM), asymmetry index (AI) were determined. In conclusion, the results of the present paper demonstrate that the Bromine K? and Kß emission energies depend on the Br chemical state and, therefore, their determination allows the chemical state speciation of Br in a given sample.Öğe ANALYSIS OF MAGNETIC FIELD EFFECTS ON K? AND Kß XRF SPECTRA OF SELENIDE COMPOUNDS(Alanya Alaaddin Keykubat Üniversitesi, 2019) Çümen, Harun; Hatipoğulları, Merve Meltem; Akkuş, Tuba; Durdağı, Sevil PorikliIn this work, EDXRF are used to demonstrate the effect of an applied magnetic field, on the determination of energy of X-ray line, full width at half maximum (FWHM), asymmetry index (AI) and intensity ratio values. To this end, various initial magnetic fields were induced on a selenide compounds, and for each level of residual magnetic field, their corresponding K? and Kß spectra were collected from a Si(Li) detector. The results showed a strong correlation between the residual sample magnetic field and the atomic parameters such as energy shifts and asymmetry indices. It was observed that the chemical shift values increases with applying the sample magnetic field but FWHM values starts decreasing with higher levels of initial residual magnetic fields.Öğe On Some Properties of m .. -Statistical Convergence in a Paranormed Space(Alanya Alaaddin Keykubat Üniversitesi, 2019) Bektaş, Çiğdem; Özçelik, EmineIn this study, we introduce the concepts of strongly ? ? m ? ,p -Cesàro summability, m ? -statistical Cauchy sequence and m ? -statistical convergence in a paronormed space. We give some certain properties of these concepts and some inclusion relations between them. Fast [1] and Steinhaus [2] introduced the concept of statistical convergence for sequences of real numbers. Several authors studied this concept with related topics [3-5]. The asymptotic density of K N ? is defined as, ? ? n 1 (K) lim k n : k K ?? n ? ? ? ? where K be a subset of the set of natural numbers N and denoted by ? ?K?. . indicates the cardinality of the enclosed set. A sequence ?xk ? is called statistically covergent to L provided that ? k ? n 1 lim k n ? L 0 ?? n ? ? ? ? ? ? for each ?? 0 . It is denoted by lim k k st x L ?? ? ? . A sequence ??k ? is called statistically Cauchy sequence provided that there exist a number N N( ) ? ? such thatÖğe First Forbidden ?-Decay Logft Values of Neutron Rich Te Isotopes(Alanya Alaaddin Keykubat Üniversitesi, 2019) Çakmak, Necla; Abdul, MuneemNeutral tellurium detected in three metal-poor stars enriched by products of r-process nucleosynthesis by using near-ultraviolet spectra obtained with the Space Telescope Imaging Spectrograph on board the Hubble Space Telescope. Tellurium (Te, Z=52) was found at the second r-process peak (A?130) associated with N=82 neutron shell closure. The beta decay rates of unstable isotopes may be drastically changed under stellar conditions. In this work, we have been investigated the first forbidden (|?J|=0, 1 and 2) transitions strength of some neutron rich Tellurium isotopes. The theoretical framework is based on a proton neutron quasiparticle random phase approximation (pn-QRPA) in the particle-hole (ph) channel. The transition probabilities in the Woods-Saxon potential basis have been calculated within the x-approximation. The calculated first forbidden b-decay logft values are in better agreement with experimental data.Öğe Pedestrian’s Utilizations of Footbridge In Kano-Nigeria(Alanya Alaaddin Keykubat Üniversitesi, 2019) Umar, İbrahim Khalil; Bashir, Samir; Alfanda, Abba Mas’ud; Farouk, Abdulwarith Ibrahim BBPedestrian crossing facilities such as crosswalk, pedestrian foot bridges overpass and underpass at intersection or midblock with crossing facilities are designed to separate pedestrians from the moving vehicles hence improving safety of the pedestrians. Questionnaire survey was used to determine the factors influencing use and utilization of foot bridge by pedestrians in Kano city, Nigeria. The survey results show that 70% of the respondents were frequent users of the bridge while 30% were found not be using it. Analysis of the survey result shows that age and gender were statistically significant in the utilisation of the bridge with p-value of 0.041 and 0.002 respectively while education level was found to be statistically insignificant p-value = 0.688. The major reasons influencing pedestrian to use the bridge were safety (66%), barricades (25%), then traffic flow (9%). For the pedestrians that does not use the bridge, they describe the bridge height (38.5%) as the major reason for not using the bridge followed by poor design of the ramps (26.5%). Improving the design of the bridges and using escalators will surely enhance use of the foot bridges by the pedestrians in Kano city.Öğe Generalized (G'/G) - Expansion Method for Some Soliton Wave Solution of (2+1)-Dimensional Dispersive Long Wave Equation (DLWE)(Alanya Alaaddin Keykubat Üniversitesi, 2019) İnan, İbrahim EnamIn this article, we have found some soliton wave solutions of the (2 + 1) -dimensional dispersive long wave equation using the generalized - expansion method. For this equation, we obtained hyperbolic function solutions, exponential function solutions and rational function solutions. We also saw that the solutions provided the equation using Mathematica 11.2 and we showed the graphical performance of some of the solutions found.Öğe Modern Instruments for Nuclear Reaction Simulations Based on NRV Web Knowledge Base(Alanya Alaaddin Keykubat Üniversitesi, 2019) Denıkın, Andrey S.; Karpov, Alexander Vladimirovich; Naumenko, Mikhail Alekseyevich; Rachkov, Vladimir Alexandrovich; Lekala, L.m.; Mukeru, B.The NRV web knowledge base on low-energy nuclear physics has been created in the Joint Institute for Nuclear Research. This knowledge base working through the Internet integrates a large amount of digitized experimental data on the properties of nuclei and nuclear reaction cross sections with a wide range of computational programs for modeling of nuclear properties and various processes of nuclear dynamics which run directly in the browser of a remote user. Today, the NRV knowledge base is a powerful instrument for nuclear physics research. The basic principles of the NRV knowledge base are covered, and a brief description of its structure is given. The practical usage of the NRV knowledge base for both scientific and educational applications is demonstrated in detail.Öğe ABAQUS Modeling and Investigation of Nuclear Central Cooling Tower Reinforced by CFRP(Alanya Alaaddin Keykubat Üniversitesi, 2019) Dehghanpour, Heydar; Afshari, Faraz; Yılmaz, KemalettinConcrete is recognized as the most ideal material for construction of cooling towers. Because it is a relatively durable material to certain chemical environments, gases and high temperatures but, being a brittle material, concrete is damaged when subjected to tensile and flexural stresses. In addition, tensile and flexural stresses in high structures such as towers are caused by horizontal loads such as wind loads. Therefore, it is important to examine the materials used in such serious structures and the repair materials to be applied after construction. In this study, it is aimed to simulate a super-large reinforced concrete cooling tower using ABAQUS program as a sheet, by considering previous studies on the structure of cooling towers. In the models, the strain and stress behaviors against the wind load were investigated by reinforcing the middle zone of the tower by carbon fiber reinforced polymer (CFRP) sheets in different thicknesses.Öğe First Forbidden Beta Transitions of ½+? ½- States for ?J=0 In Spherical Odd Mass Nuclei(Alanya Alaaddin Keykubat Üniversitesi, 2019) Selam, CevadIn this study, the first forbidden beta transitions of states for ?J=0 have been investigated in spherical odd mass nuclei. The pn-QRPA model is used with a schematic separable interaction to calculate first forbidden transitions by considering the Woods–Saxon potential basis in the Chepurnov parameterization. The transition probabilities in this model have been calculated within the ?-approximation. ? is a dimensionless parameter representing the magnitude of the Coulomb energy and is approximated by 1.2ZA?1/3 [1]. Logft values calculated of first forbidden transitions are found to be in better agreement with measured data.Öğe BEŞYOL MAHALLESİ’ NDE BİRLEŞTİRİLMİŞ JEOLOJİK, JEOFİZİK VE JEOTEKNİK ARAŞTIRMALARLA ZEMİN İNCELENMESİ(Alanya Alaaddin Keykubat Üniversitesi, 2020) Koçak, BesteBu çalışma İstanbul Aydın Üniversitesi’ ne ait parsellerin zemin parametrelerinin ‘Jeoloji-Jeoteknik-Jeofizik Yöntemlerle İncelemesi’ projesi dahilinde yer alan çalışmaları ve değerlendirmeleri kapsamaktadır. İnceleme alanının zemin özelliklerini belirlemek amacıyla yapılmış olan sondajlar ve laboratuvar sonuçları arazi gözlemleriyle bir araya getirilerek birlikte değerlendirilmiştir. Birinci aşamada, büro çalışmaları kapsamında arazi ile ilgili tüm veriler kaydedilmiş, proje alanında yapılan jeolojik haritalar ve sayısal datalar incelenmiştir. İkinci aşamada saha çalışmaları kapsamında düşey hidrolik sondaj çalışmaları ve jeofizik yöntemler kullanılarak inceleme alanının jeoteknik özellikleri belirlenmiştir. Üçüncü aşamada ise İAU İnşaat Laboratuvarında zemin türleri sınıflandırılmış ve bunların taşıma gücü, kıvamlılık özellikleri incelenmiş, yeraltı özelliklerinin saha içindeki dağılımları ortaya çıkarılmış, proje alanının morfolojik ve jeoteknik özellikleri belirlenmiştir. Dördüncü ve son aşamada yapılan tüm çalışmalar sonucunda inceleme alanının yerleşime uygunluk değerlendirmesi yapılmıştır.Öğe On Some Properties of m ? -Statistical Convergence in a Paranormed Space(Alanya Alaaddin Keykubat Üniversitesi, 2019) Bektaş, Çiğdem; Özçelik, EmineIn this study, we introduce the concepts of strongly ? ? m ? ,p -Cesàro summability, m ? -statistical Cauchy sequence and m ? -statistical convergence in a paronormed space. We give some certain properties of these concepts and some inclusion relations between them. Fast [1] and Steinhaus [2] introduced the concept of statistical convergence for sequences of real numbers. Several authors studied this concept with related topics [3-5]. The asymptotic density of K N ? is defined as, ? ? n 1 (K) lim k n : k K ?? n ? ? ? ? where K be a subset of the set of natural numbers N and denoted by ? ?K?. . indicates the cardinality of the enclosed set. A sequence ?xk ? is called statistically covergent to L provided that ? k ? n 1 lim k n ? L 0 ?? n ? ? ? ? ? ? for each ?? 0 . It is denoted by lim k k st x L ?? ? ? . A sequence ??k ? is called statistically Cauchy sequence provided that there exist a number N N( ) ? ? such thatÖğe Isotopic Yields in Peripheral Heavy-Ion Collisions(Alanya Alaaddin Keykubat Üniversitesi, 2019) Gülbeyaz, Fatma Bulut; Büyükçizmeci, Nihal; Oğul, RızaWe have calculated production cross sections and isotopic distributions of the projectile fragments emerging from the reactions 112,124Sn + 112,124Sn at 50 MeV/nucleon incident beam energy, performed at the cyclotron of Michigan State University (MSU). For the interpretation of the data, we carried out the calculations within the statistical multifragmentation model (SMM). The possible modification of symmetry energy parameter, in the multifragmentation region at the low density freeze-out has been studied. It is shown that a significant reduction of the symmetry energy term is found necessary to reproduce experimental data. The results are in agreement with recent findings.Öğe ANALYSIS OF MAGNETIC FIELD EFFECTS ON K? AND K? XRF SPECTRA OF SELENIDE COMPOUNDS(Alanya Alaaddin Keykubat Üniversitesi, 2019) Çümen, Harun; Hatipoğulları, Merve Meltem; Akkuş, Tuba; Durdağı, Sevil PorikliIn this work, EDXRF are used to demonstrate the effect of an applied magnetic field, on the determination of energy of X-ray line, full width at half maximum (FWHM), asymmetry index (AI) and intensity ratio values. To this end, various initial magnetic fields were induced on a selenide compounds, and for each level of residual magnetic field, their corresponding K? and K? spectra were collected from a Si(Li) detector. The results showed a strong correlation between the residual sample magnetic field and the atomic parameters such as energy shifts and asymmetry indices. It was observed that the chemical shift values increases with applying the sample magnetic field but FWHM values starts decreasing with higher levels of initial residual magnetic fields.Öğe Fragment Composition in Central Heavy-Ion Collisions(Alanya Alaaddin Keykubat Üniversitesi, 2019) Avcı, Hamide İmal; Büyükçizmeci, Nihal; Oğul, RızaCharge, mass and isotopic distributions of fragments formed in the central collisions of neutron poor and neutron rich elements 112Sn + 112Sn and 124Sn + 124Sn have been theoretically calculated and compared to the experimental data. Influence of surface and symmetry terms on charge and isotopic distributions, at low density freeze-out were investigated. We show that significant reduction of the symmetry term coefficient leads to better reproduction of the isotopic distributions, while the surface term effect is negligible. This is in agreement with our previous findings obtained from the interpretation of both central and peripheral heavy ion collisions.Öğe Investigation of the Chemical Effect Using EDXRF Spectrometry on the Lines of Bromine K? and K? X-Ray Emission Spectra(Alanya Alaaddin Keykubat Üniversitesi, 2019) Hatipoğulları, Merve Meltem; Çümen, Harun; Yalçın, Paşa; Durdağı, Sevil PorikliBromine is used in many areas such as agricultural chemicals, dyestuffs, insecticides, pharmaceuticals and chemical intermediates. Some uses are being phased out for environmental reasons, but new uses continue to be found. In this work, the effects caused by different chemical environments in several bromine compounds were studied using EDXRF spectrometry. The samples were excited by 59,5 keV gamma rays emitted from Am-241 radioisotope source and characteristic K X-rays emitted from the samples were counted by Si(Li) detector. Modifications in values of energy of X-Ray line, full width at half maximum (FWHM), asymmetry index (AI) were determined. In conclusion, the results of the present paper demonstrate that the Bromine K? and K? emission energies depend on the Br chemical state and, therefore, their determination allows the chemical state speciation of Br in a given sample.Öğe Quantal Diffusion in Heavy-Ion Collisions(Alanya Alaaddin Keykubat Üniversitesi, 2019) Yılmaz, Osman; Yılmaz, Bülent; Ayık, ŞakirWe investigate the quasi-fission reactions in the basis on the Stochastic Mean-Filed (SMF) approach that provides a microscopic and quantal description of the multi-nucleon exchange mechanism. In deep-inelastic heavy-ion collisions, colliding ions stick and move together for a long time. During this contact time many nucleons exchange between projectile and target nuclei, and the composite system then separate in two main primary fragments without forming a compound nucleus. Quasi-fission is a non-compound nuclear process in deep-inelastic heavy-ion collisions and the multi-nucleon exchange mechanism in the quasi-fission reactions is important. We calculate the quantal transport coefficients for heavy-ion collisions at bombarding energies below their fusion barriers and determine the primary fragment mass distributions. Quantal calculations are compared with the experimental data.Öğe Deneysel Veriler ve Ampirik İfadeler Kullanılarak Isı Transfer Katsayısının Karşılaştırmalı Analizi(Alanya Alaaddin Keykubat Üniversitesi, 2024) Güler, BirkutBu çalışma, hem deneysel yöntemlerden hem de ampirik ifadelerden elde edilen sonuçları karşılaştırarak ısı transfer katsayısını belirlemeyi amaçlamaktadır. Suyun polietilen hortumdan akışını içeren kontrollü bir deney yapılmış ve giriş ve çıkış sıcaklıklarına göre ısı transfer katsayısı hesaplanmıştır. Bu bulgular daha sonra doğruluk ve güvenilirliği değerlendirmek için ampirik korelasyonlardan, özellikle de Sieder-Tate denkleminden elde edilen değerlerle karşılaştırılmıştır. Deney düzeneği, su giriş sıcaklığı, hava akış hızı ve hortum yönelimi dahil olmak üzere tutarlı sınır koşullarını korumuştur. Sonuçlar deneysel olarak belirlenen ısı transfer katsayısının 48,30 W/(m²·K) olduğunu gösterirken ampirik hesaplama 53,44 W/(m²·K) değerini vermiştir. Bu değerler arasındaki az farklılık, ampirik modellerin doğasında bulunan küçük deneysel hataları ve varsayımları vurgulamaktadır. Genel olarak, deneysel ve ampirik değerler arasındaki yakın uyum, benzer konfigürasyonlarda ısı transferi katsayılarını tahmin etmek için ampirik korelasyonların kullanımını doğrulamaktadır. Bu çalışma, deneysel doğrulamanın önemini vurgulayarak çeşitli endüstriyel ve mühendislik uygulamalarında ısı transfer süreçlerini optimize etmeye yönelik değerli bilgiler sunmaktadır. Gelecekteki çalışmalar, bulguların doğruluğunu ve uygulanabilirliğini daha da artırmak için genişletilmiş parametre aralıklarını, gelişmiş ölçüm tekniklerini ve sayısal simülasyonları kullanabilecektir.Öğe Investigation of the Green Infrastructure Performance via Hydrologic/Hydraulic and Water Quality Model: A Case Study of Istanbul University-Cerrahpaşa Büyükçekmece Campus(Alanya Alaaddin Keykubat Üniversitesi, 2024) Aydin, Orkun; Emir, Selin; Emir, Selen; Güney, Ecem; Coşkun, Elif Naz; Aydın, Zeynep; Yıldız, EcemHeavy urbanization leads to an increase in surface runoff volume and pollution of surface water quantities and consequently, a decline in water quality. Green Infrastructure System components are used to diminish these harmful effects. Green Infrastructure Systems are nature-friendly methods that decrease peak discharge and surface runoff as well as improving water quality by decreasing pollutant concentrations. These applications which lessen the impacts of urbanization are called Low Impact Development (LID) implementations. In this study, the effects of LID implementations on surface runoff and water quality are examined. In context, we utilized the Environmental Protection Agency Storm Water Management Model (EPA-SWMM) to process the Hydrologic/Hydraulic and Water Quality Model of the Istanbul University-Cerrahpasa Büyükçekmece Campus. Having compared the models with and without LID applications, the green infrastructure performance is investigated. The results indicated that total surface runoff, peak flow rate, and the pollutant concentrations in the surface flow had decreased significantly.
