• Role of Cr-coating by electroplating method on fabrication and transport properties of Fe/Cr/MgB2 wires 

  Karaboğa, Fırat (Springer, 2020)

  This study has focused on the use of chromium metal as a chemical barrier in the production of in situ MgB2 wires. The chromium metal was plated homogeneously into the initial iron tube by electroplating in order to produce ...

• Ac loss and ramp up related heating effects in superconducting mgb(2) coils 

  Yetiş, Hakan; Akdoğan, Mustafa; Karaboğa, Fırat; Avcı, Doğan; Belenli, İbrahim (Ieee-Inst Electrical Electronics Engineers Inc, 2020)

  Superconducting coils modeled by using single core MgB2 wires having copper or iron or both in the cross section as sheath materials have been examined numerically by using the magnetic field formulation and heat transfer ...

• An innovative approach to fabricate MgB2/Fe IMD wires by magnesium powder method 

  Yetiş, Hakan; Avcı, Doğan; Karaboğa, Fırat; Gajda, Daniel; Akdoğan, Mustafa; Belenli, İbrahim (Elsevier, 2020)

  A novel method is presented for the production of the in-situ MgB2/Fe mono-core internal magnesium diffusion (IMD) processed wires by using Mg powder instead of Mg rod to accomplish internal diffusion of magnesium into ...

• Effects of annealing temperature on electrical characteristics of sputtered Al/Al2O3/p-Si (MOS) capacitors 

  Kaya, Şenol; Budak, Erhan; Yılmaz, Ercan (Scientific Technical Research Council Turkey-Tubitak, 2018)

  The aim of this study is to investigate annealing effects on the electrical characteristics of aluminum oxide (Al2O3) MOS capacitors. Chemical changes after annealing have been characterized using the Fourier transform ...

• Modifications of structural, chemical, and electrical characteristics of Er2O3/Si interface under Co-60 gamma irradiation 

  Kaya, Şenol; Yılmaz, Ercan (Elsevier Science Bv, 2018)

  This paper reports the influences of gamma radiation on the structural, electrical, and chemical characteristics of erbium oxide (Er2O3) thin films and the possible mechanisms underlying these irradiation-induced effects. ...

• Mechanical properties and uniformity of Fe-MgB2 wires upon various wire drawing steps 

  Karaboğa, Fırat; Ülgen, Asaf Tolga; Yetiş, Hakan; Akdoğan, Mustafa; Pakdil, Murat; Belenli, İbrahim (Elsevier Science Sa, 2018)

  Effect of drawing process on the mechanical properties and cross-sectional uniformity of Fe/MgB2 mono-filamentary wires were investigated in this study. Successive cold drawing steps were applied with and without intermediate ...

• Monofilamentary in situ Fe/MgB2 superconducting wires Fabricated by pellet-in-tube method 

  Karaboğa, Fırat; Yetiş, Hakan; Akdoğan, Mustafa; Belenli, İbrahim (Springer, 2018)

  Thin monofilamentary Fe/MgB2 superconducting wires without barriers are investigated by means of electrical transport measurements and surface and structural analysis methods. Small diameter wires are fabricated by ...

• Effect of different-sized h-BN nano-particles on some properties of MgB2 superconductors 

  Karaboğa, Fırat; Yetiş, Hakan; Öz, Muhammed; Belenli, İbrahim (Springer, 2016)

  The present study reports the effect of hexagonal boron nitride (h-BN) doping on the superconducting properties of bulk MgB2 samples. Structural, electrical and magnetic properties of 3 wt% h-BN doped MgB2 samples are ...

• Microstructure and transport properties of compaction-modified in situ Fe/MgB2 wires 

  Şenol, Mehmet Akif; Karaboğa, Fırat (Springer, 2016)

  This study has shown the effect of excessive mechanical deformation by pressing and consecutive heat treatment, respectively, on the microstructure and transport properties of mono-core sintered in situ Fe/MgB2 wires. These ...

• Effect of Li2CO3 on formation temperature of hBN by modified O'Connor model 

  Öz, Muhammed; Sarıtekin, Namık Kemal; Bozkurt, Çetin; Budak, Erhan; Yıldırım, Gürcan (Wiley-V C H Verlag Gmbh, 2016)

  This study is interested in the effect of lithium carbonate on the formation of hexagonal boron nitride (hBN) by means of the available experimental methods including TGA, XRD, FTIR, SEM and HR-TEM. hBN samples were ...

• Effect of the initial filling density on the critical current of in-situ Fe/MgB2 wires 

  Akdoğan, Mustafa; Yetiş, Hakan; Gajda, Daniel; Karaboğa, Fırat; Ülgen, Asaf Tolga; Demirtürk, Emine; Belenli, İbrahim (Elsevier Science Sa, 2015)

  We report a comparative study on the fabrication of in-situ monofilamentary superconducting Fe sheathed MgB2 wires as a function of the initial tube filling density. The wire samples are fabricated by means of a standard ...

• Comparative study on indentation size effect, indentation cracks and superconducting properties of undoped and MgB2 doped Bi-2223 ceramics 

  Doğruer, Musa; Karaboğa, Fırat; Yıldırım, Gürcan; Terzioğlu, Cabir (Springer, 2013)

  This study examines the evaluation mechanism of MgB2 doped Bi1.8Pb0.4Sr2(MgB2)(x)Ca2.2Cu3.0Oy (0 <= x <= 1.0) superconducting ceramics prepared by conventional solid-state reaction method via dc resistivity, X-ray diffraction ...

• Density Functional Theory Study on the Identification of Pd(Me-Xanthate)(2) 

  Koca, M.; Yildirim, G.; Kirilmis, C.; Karaboga, F. (Springer Heidelberg, 2012)

  This study dealing with the identification of a title compound, Pd(Me-Xanthate)(2), by means of quantum chemical calculations is composed of two parts: experiment and theoretical. For the first part, the molecule was ...

• Influence of Sr/Nd partial replacement on fundamental properties of Bi-2223 superconducting system 

  Doğruer, Musa; Aksoy, Canan; Yıldırım, Gülden; Özturk, Özgür; Terzioğlu, Cabir (Springer, 2021)

  This comprehensive work aims to examine the change in flux pinning mechanism, physical, mechanical, and structural characteristics of pure and Sr-site Nd-substituted Bi1.8Pb0.35Sr1.9?yNdyCa2.2Cu3Ox (Bi-2223) systems. The ...

• Nano-sized amorphous/semi-crystalline boron ratio and external Mg effects on transport and structural properties in MgB2 IMD wires 

  Yetiş, Hakan; Karaboğa, Fırat; Avcı, Doğan; Belenli, İbrahim (Elsevier B.V., 2021)

  In the present study, Mg diffusion process has been investigated by transport measurements and surface morphology analysis in round MgB2 wires made with internal Mg diffusion (IMD) method. These wires were produced using ...

• Investigating preschool teachers’ use of information technologies in terms of special field competences 

  Kılınç, Fatma Elif; Tepetaş Cengiz, Gülüzar Şule (Sakarya University, 2016)

  The study examined “development of awareness about daily use of information technologies” under “Communication” competence field included in Special Field Competences for Preschool Teachers employed in preschools and ...

• Use of amorphous boron and amorphous nano boron powder mixture in fabrication of long in-situ MgB2/Fe wires 

  Mustafa, Akdoğan; Yetiş, Hakan; Gajda, Daniel; Karaboğa, Fırat; Rogacki, Krzysztof; Morawski, Andrzej; Belenli, İbrahim (Elsevier Ltd, 2017)

  We report a study on the structural and transport properties of long in situ MgB2/Fe wires that are prepared by use of amorphous boron and nano amorphous boron powders with 50–50% weight ratio. The wire samples are fabricated ...

• An investigation of the relationship between preschool teachers' picture story book reading activities and children's language development 

  Cengiz, Gülüzar Şule Tepetaş; Gönen, Mübeccel (IGI Global, 2018)

  This chapter examines the relationship between teachers' picture story book reading activities and 48- to 60-month-old children's language development and to identify the effect of different variables on this relationship. ...

• The role of hematological parameters in estimating nosocomial sepsis 

  Gözdaş, Hasan Tahsin; Gel, Keziban Türken; Yasayacak, Aliye; Kesgin, Makbule Tokur; Akdeniz, Hayrettin (Modestum Ltd., 2019)

  Background: Sepsis is a systemic inflammatory condition with high mortality rate. It is important to estimate nosocomial sepsis in order to manage the patients earlier. The aim of this study was to investigate the role of ...

• Kalp damar cerrahisi yoğun bakım ünitesinde yatan hastalarda deliryum ve risk faktörlerinin belirlenmesi 

  Yaşayacak, Aliye; Eker, Fatma (2012)

  Amaç: Bu çalışmada kalp damar cerrahisi yoğun bakım ünitesinde (YBÜ) yatan hastalarda deliryum ve risk faktörlerinin belirlenmesi amaçlandı. Çalışma planı: Çalışmaya bir tıp fakültesi hastanesinin kalp damar cerrahisi ...

View more