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Recent Submissions

Adaptive envelope protection control of wind turbines under varying operational conditions Şahin, Mustafa; Yavrucuk, İlkay (2022-05-01) This study introduces a new Envelope Protection System (EPS) algorithm forwind turbines. The algorithm is adaptive to turbine-changing operational conditions and can effectively reduceturbineexcessive/ultimate loads. Throu...
Sanat Tarihi Nasıl Anlatılır: Filiz Yenişehirlioğlu ile Söyleşi- Varlık Dergisi Bican, Mine (2022-05-01)
On the Optimization of the Microstructural and Mechanical Properties of Model Ni-Based Superalloys Through the Alloying Effects of Refractory Mo and W Elements Eriş, Rasim; Akdeniz, Mahmut Vedat; Mehrabov, Amdulla (2022-05-01) In the design and development of next-generation Ni-based superalloys, the addition of refractory impurity elements not only induces better degree of bonding strengthening, but also helps in maintaining structural stabilit...
Interface stability problem towards the end of THM growth of cadmium zinc telluride crystals Ünal, Mustafa; Balbaşı, Özden Başar; Genç, Ayşe Merve; Parlak, Mehmet; Turan, Raşit (2022-04-15) Growth of CdZnTe crystals by Travelling Heater Method (THM) is widely investigated by different groups. Interface shape and stability are critical parameters for the successful growth of high-quality CZT crystals. Even tho...
Effects of Atmospheric Icing on Performance of Controlled Wind Turbine Şahin, Mustafa (2022-03-18) Icing deteriorates the performance of wind turbine rotors by changing the blade airfoils’ shapes. It decreases the lift, increases the drag, and subsequently causes power production losses and load increase on turbines’...
Beam dynamic studies at accelerator system of gun for a self-amplified spontaneous emission free electron laser project Yildiz, H. Duran; Porsuk, D.; Yıldız, İlker; Cakir, R. (2022-01-01) One of the important factors in high radiation generation facilities is the production of a high quality electron beam. To do that, the requirements of an optical electron source, such as current, radiation emission, etc. ...
A Cell Culture Chip with Transparent, Micropillar-Decorated Bottom for Live Cell Imaging and Screening of Breast Cancer Cells Ermiş Şen, Menekşe; ANTMEN ALTUNSOY, EZGİ; Kuren, Ozgur; Demirci, Utkan; Hasırcı, Vasıf Nejat (2022-01-01) In the recent years, microfabrication technologies have been widely used in cell biology, tissue engineering, and regenerative medicine studies. Today, the implementation of microfabricated devices in cancer research is fr...
Preclinical toxicity test results of a new antiviral–immune-modulator compound consisting of flavonoid molecules (COVID-19 clinical trial preliminary data) Budak, Gürer; ÖZKAN, SEÇİL; BUDAK, Mehmet; Şeker, Tamay; MERYEMOĞLU, BAHAR; Miran, Şükran Selin; Çoban, Canan Çakır; Tarkun, Örkun (2022-01-01) Aim: Isolated specific glycone–aglycone conjugated flavonoids which are investigated for their effect of bioavailability and molecular concentrations. The specific formula is then tested via in vitro and in vivo cytotoxici...
Investigation of Aerodynamic Characteristics of Twisted Tall Building Orbay Akcengiz, Ezgi; Sezer Uzol, Nilay (2021-12-20)
Simplified process flow for the fabrication of PERC solar cells with ion implanted emitter Bektas, Gence; Kokbudak, Gamze; Kececi, Ahmet Emin; Butuner, Sumeyye Kocak; Asav, Hasan; Çiftpınar, Emine Hande; Canar, Hasan Huseyin; Arikan, Bulent; Turan, Rasit (2021-12-01) Ion implanted PERC cells have already achieved power conversion efficiencies of about 20.0%. The process flows reported in the literature for the ion implanted PERC cells with commonly utilized Al2O3/SiNx rear passivation ...
"21. Yüzyılın Öğretmen Adayları": Adayların Giriş Özellikleri ve 21. Yüzyıl Becerileri Eret, Esra; Özcan, Burcu; Ural, Fadime (Efe Akademi Yayınları, 2021-12-01)
Who Are Going to Teach in 21st Century Classes? A Glance at Teacher Candidates to Know Our Future Teachers Eret, Esra; Ural, Fadime; Özcan, Burcu (Efe Akademi Publishing, 2021-12-01)
Fourteen percent efficiency ultrathin silicon solar cells with improved infrared light management enabled by hole-selective transition metal oxide full-area rear passivating contacts Nasser, Hisham; Borra, Mona Zolfaghari; Çiftpınar, Emine Hande; Eldeeb, Basil; Turan, Raşit (2021-11-01) The present study investigates the application of hole-selective transition metal oxide (TMO) layers (MoOx, V2Ox, and WOx) with silver (Ag) as full-area rear contact to 22.5 mu m-thick low-quality Cz p-type c-Si solar cell...
Yüksek Verimli PERC Güneş Pilleri için Pikosaniye Atımlı Lazer ile Lazer Doping Yoluyla Seçici Emitör Oluşumu Bektaş, Gence (2021-11-01) In this study, we develop a POCl3 diffusion recipe so that we obtain a thicker phosphosilicate glass layer for laser doping. The formation of a laser doped selective emitter is achieved by utilizing an industrial-type pico...
Critical analysis of zeolite 4A synthesis through one-pot fusion hydrothermal treatment approach for class F fly ash Akın, Süleyman Şener; Kirdeciler, Salih Kaan; Kazanç Özerinç, Feyza; Akata Kurç, Burcu (2021-10-01) In this study, ‘‘One-pot fusion assisted hydrothermal synthesis’’ approach was employed to understand the nucleation and crystallization behaviour of the fusion product of Class F fly ash for zeolite 4A synthesis. Two sets...
Wind Turbine Modeling and Challenges Şahin, Mustafa (2021-09-27) One field of Aerospace Engineering is wind turbines due to their aerodynamic and structural designs, etc. These machines are one of the prominent systems for electricity generation in the world. Now, more than 90 countries...
Rüzgar Türbinleri için Yenilikçi Uyarlanabilir bir Zarf Koruma Sisteminin Geliştirilmesi ve Farklı Rotor Çaplarındaki Türbinler Üzerinde Simülasyon Testleri Şahin, Mustafa; Yavrucuk, İlkay (2021-09-23)
Rüzgâr Türbini Kanat Kesiti İçin Yüksek Reynolds Sayılarında Çözüm Ağı Bağımsızlık Çalışması Orbay Akcengiz, Ezgi; Sezer Uzol, Nilay (2021-09-23) Bu bildiride rüzgar türbini kanatlarında kullanılan kalın kanat profillerinden DU 00-W-212 profilinin 3 farklı yüksek Reynolds sayısı (3, 6 ve 9 milyon) için aerodinamik performansı Hesaplamalı Akışkanlar Dinamiği (HAD) yö...
An Algorithm for Wind Turbine Protection under Iced Rotor Blades Şahin, Mustafa; Yavrucuk, İlkay (2021-09-08)
Aerodynamic Analyses of Thick Wind Turbine Airfoils for High Reynolds Numbers ASLAN, EZGİ; Orbay Akcengiz, Ezgi; Sezer Uzol, Nilay (2021-09-08) In this study, Computational Fluid Dynamics simulations of flow around thick have been performed. Thick airfoils are generally preferred in wind turbine blades for structural and aerodynamic performances. High Reynolds flo...

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