• Analysis of various flow field designs for PEM fuel cells used in vehicular systems through 3D modelling 

  Toprak, Muhammed Mücahid; Kök, Ceyda; Mert, Suha Orçun (MIM Research Group, 2022)

  The importance of green energy has increased in recent years. Vehicles that don't run on fossil fuels and have zero CO2 emissions are on the agenda of many developed countries. Battery-based vehicles have long charge times ...

• A New Insight into Formulation Approach for Water Based Drilling Fluids 

  Yalman, Emine; Federer-Kovacs, Gabriella; Depci, Tolga (Slovnaft VURUP a.s, 2022)

  The objective of this study is to develop a water-based drilling fluid with enhanced rheological and filtation characteristics by using a coal combustion by product which is known as fly ash (CCA). To this end, initially, ...

• Arttırılmış Oransal Seyrüsefer Güdümüne Gözleyici Etkisinin Farklı Hedef Modellerine Göre İncelenmesi 

  Gürsoy-Demir, Handan; Efe, Mehmet Önder (Institute of Electrical and Electronics Engineers Inc., 2022)

  In this study, a new three-dimensional (3D) guidance law based on an the augmented proportional navigation guidance law utilizing a disturbance observer (DOB) technique is proposed considering different target models. The ...

• Görüntü Tabanlı Kamera Konumlandırma İçin Farklı Eniyileme Tekniklerinin Başarım Değerlendirmesi 

  Solmaz, Muhammed Kerim; Sarıgül, Mehmet; Karacan, Levent (Institute of Electrical and Electronics Engineers Inc., 2022)

  In this study, the performance evaluation of different optimization methods in calculating the change of camera movement, in other words the camera position and angle, was made on images taken from different views with the ...

• A Novel Software for Automatic Calibration Factor Measurement of RF Power Sensors 

  Kızılbey, Oğuzhan; Arslan, Murat; Bayrak, Yusuf; Çetinkaya, Anıl; Yörük, Aydın; Danacı, Erkan (IInstitute of Electrical and Electronics Engineers Inc., 2022)

  In this letter, a software for calibration factor (CF) measurement of radio frequency (RF) power sensors (PS) by using VNA-based direct comparison transfer method (VBDCTM) was developed on C# platform. Measurements were ...

• Low temperature thermoelectric properties of Na-substituted Bi2Ca2Co2Oy ceramics fabricated via LFZ technique 

  Özçelik, Bekir; Çetin, Gizem; Gürsul, Mehmet; Özçelik, Can; Depci, Tolga; Madre, María Antonieta; Sotelo, Andrés E.; Ando, Hiroshi; Terashima, Kensei; Takano, Yoshihiko (Elsevier, 2022)

  In this work, Bi2Ca2-xNaxCo2Oy with x = 0.0, 0.05, 0.10, and 0.125 thermoelectric ceramic materials have been produced by the classical solid-state route, followed by texturing through the laser floating zone (LFZ) method. ...

• Electrospinning of PVDF nanofibers incorporated cellulose nanocrystals with improved properties 

  Aydemir, Deniz; Sözen Eser; Borazan, İsmail; Gündüz, Gökhan; Ceylan, Esra; Gülsoy, Sezgin Koray; Kılıç-Pekgözlü, Ayben; Bardak, Timuçin (Springer, 2022)

  Polyvinylidene fluoride (PVDF) nanofibers with cellulose nanocrystals (CNCs) were produced with the electrospinning technique at the CNC loading rates of 0.25, 0.50, 0.75, and 1 wt%. CNCs were obtained with acid hydrolysis ...

• Convergence Analysis and Approximate Optimal Temporal Step Sizes for Some Finite Difference Methods Discretising Fisher's Equation 

  Agbavon, Koffi Messan; Appadu, Appanah Rao; İnan, Bilge; Tenkam, Herve Michel (Frontiers Media S.A., 2022)

  In this study, we obtain a numerical solution for Fisher's equation using a numerical experiment with three different cases. The three cases correspond to different coefficients for the reaction term. We use three numerical ...

• Enhanced optoelectronic properties of magnetron sputtered ITO/Ag/ITO multilayers by electro-annealing 

  Uyanık, Zemzem; Türkoğlu, Fulya; Köseoğlu, Hasan; Ekmekçioğlu, Merve; Ata, Bengü; Demirhan, Yasemin; Özdemir, Mehtap; Aygün, Gülnur; Özyüzer, Lütfi (AVS Science and Technology Society, 2022)

  Indium tin oxide/silver/indium tin oxide (ITO/Ag/ITO) multilayers have attracted much attention to fulfill the growing need for high-performance transparent conducting oxide electrodes. To make these transparent multilayers ...

• Modüler çok seviyeli dönüştürücüler için genelleştirilmiş bir kapasitör gerilim dengeleme şeması ve örnekleme frekansı analizi 

  Kurtoğlu, Mehmet; Eroğlu, Fatih; Vural, Ahmet Mete (Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi, 2022)

  Modüler çok seviyeli dönüştürücüler (MÇD), modüler yapısı ve kaliteli çıkış dalga formu sayesinde endüstriyel uygulamalarda sıklıkla kullanılmaktadırlar. En yakın seviye modülasyon (ESM) yöntemi MÇD uygulamalarında tercih ...

• Powder-pack boronizing of CoCrFeNiAl0.5Nb0.5 HEA: Modeling of kinetics, microstructural, mechanical, and tribological characterizations 

  Günen, Ali; Keddam, Murad; Sünbül, Sefa Emre; İçin, Kürşat; Döleker, Kadir Mert; Gök, Mustafa Sabri; Dal, Serkan; Erdoğan, Azmi (Elsevier, 2022)

  This study is dedicated to the detailed investigation of boronization kinetic, microstructural, mechanical, and wear properties of high entropy alloys (HEAs) considering their sluggish diffusion effect properties. A ...

• Chemiresistive CuO sensors for label-free C-reactive protein detection 

  Bayansal, Fatih; Çetinkara, Hacı Ali (Elsevier, 2022)

  In this study, we developed fast and highly sensitive, label-free Ca-doped cupric oxide (CuO) based che-miresistive biosensors to detect C-reactive protein (CRP). The Successive Ionic Layer Adsorption and Reaction (SILAR) ...

• Integrating electric vehicles as virtual power plants: A comprehensive review on vehicle-to-grid (V2G) concepts, interface topologies, marketing and future prospects 

  İnci, Mustafa; Savrun, Murat Mustafa; Çelik, Özgür (Elsevier, 2022)

  Global factors such as energy consumption and environmental issues encourage the utilization of electric vehicles (EVs) as alternative energy sources besides transportation. Recently, the development of virtual power plants ...

• Electrospinning of PVDF nanofibers incorporated cellulose nanocrystals with improved properties 

  Aydemir, Deniz; Sözen, Eser; Borazan, İsmail; Gündüz, Gökhan; Ceylan, Esra; Gülsoy, Sezgin Koray; Kılıç-Pekgözlü, Ayben; Bardak, Timuçin (Springer, 2022)

  Polyvinylidene fluoride (PVDF) nanofibers with cellulose nanocrystals (CNCs) were produced with the electrospinning technique at the CNC loading rates of 0.25, 0.50, 0.75, and 1 wt%. CNCs were obtained with acid hydrolysis ...

• Pinch point determination and Multi-Objective optimization for working parameters of an ORC by using numerical analyses optimization method 

  Kocaman, Emrullah; Karakuş, Cuma; Yağlı, Hüseyin; Koç, Yıldız; Yumrutaş, Recep; Koç, Ali (Elsevier, 2022)

  In parallel with Kyoto, Paris and the green production agreements, the nowadays crucial subject is minimising energy consumption, increasing renewable energy usage and recovering waste heat. When it comes to waste heat, ...

• Sinusoidally located concrete metastructures for attenuation of seismic surface vibrations 

  Kaçın, Selçuk; Öztürk, Murat; Sevim, Umur Korkut; Karaaslan, Muharrem; Akgöl, Oğuzhan; Özer, Zafer; Demirci, Mustafa; Ünal, Emin; Mert, Bayram Ali; Alkurt, Maide Erdoğan; Alkurt, Fatih Özkan; Başar, Mustafa Tunahan; Kaya, Şeyda Gülsüm (Springer, 2022)

  In this numerical and experimental study, we designed sinusoidal located concrete-based boreholes which are candidate for seismic shielding applications. To attenuate seismic wave transmission in an area, proposed design ...

• Tree-shaped fractal metamaterial multiband absorber for C- and X-band applications 

  Abbas, Muhammad Basir; Baqir, Muhammad Abuzar; Altıntaş, Olcay; Karaaslan, Muharrem; Abbas, Musarat (Taylor and Francis Ltd., 2022)

  Recently, multiband metamaterial absorbers have gained considerable attention from research and development communities due to their applications in filtering, stealth, and sensing. However, these multiband absorbers are ...

• Sliding mode control for fuel cell supported battery charger in vehicle-to-vehicle interaction 

  İnci, Mustafa; Büyük, Mehmet; Özbek, Necdet Sinan (Wiley, 2022)

  In typical vehicle-to-vehicle (V2V) charging systems, energy transfer is provided from a battery electric vehicle (BEV) to charge the energy storage unit of another BEV. In this study, the utilization of a fuel cell electric ...

• Effect of the boriding environment on the wear response of laser-clad AlCoCrFeNi high entropy alloy coatings 

  Günen, Ali; Lindner, Thomas; Karakaş, Mustafa Serdar; Kanca, Erdoğan; Töberling, Gerd; Vogt, Sabrina; Gök, Mustafa Sabri; Lampke, Thomas (Elsevier, 2022)

  Laser-clad AlCrFeCoNi high entropy alloy (HEA) coatings, produced on the surface of AISI 316 L stainless steel, were pack-borided at 1000 °C for 4 h in open air, high-purity Ar and vacuum environments. The HEA, which had ...

• Surface integrity characteristics in wire-EDM of HfTaTiVZr refractory high entropy alloy 

  Ceritbinmez, Ferhat; Günen, Ali; Akhtar, Mst Alpona; Patel, Kunjal; Mukherjee, Sundeep; Yünlü, Lokman; Kanca, Erdoğan (Taylor and Francis Ltd., 2022)

  Refractory high entropy alloys (RHEAs) with multiple principal elements constitute a new paradigm in alloy design and have gained recent interest for advanced technical applications due to their unique properties and ...

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