• Thermoluminescence of hydroxyapatite from eggshell powders doped with Dy synthesized by the sonication chemical method: Effects of doping concentration and heating rate 

  Bulcar, Kenan; Oğlakçı Mehmet; Yücel, Ayşegül; Sezer, Selda; Madkhali, O. Ali A.; Depci, Tolga; Topaksu, Mustafa; Can, Nurdoğan (Elsevier, 2022)

  Hydroxyapatite (HAP) was selected as the host material and synthesized using a sonication chemical method. The effect of Dy3+ ion doping concentrations (0.25, 0.5, 1, 2, 3, 4, 5, 7, and 10 wt%) on the structure and ...

• Drastic microstructural modification of Bi2Ca2Co2Oyceramics by Na doping and laser texturing 

  Özçelik, Can; Depci, Tolga; Gürsul, Mehmet; Çetin, Gizem; Özçelik, Bekir; Torres, Miguel A.; Madre, Maria A.; Sotelo, Andres (Sociedad Espanola de Ceramica y Vidrio, 2022)

  Bi2Ca2-xNaxCo2Oy materials with x = 0 < x < 0.125, have been prepared either by sintering through the classical ceramic method, or textured using the laser floating zone technique. XRD results have shown that Bi2Ca2Co2Oy ...

• TiO2 Nanopartikülü İle Fonksiyonelleştirilmiş Çok Duvarlı Karbon Nanotüpün Su Bazlı Sondaj Çamuruna Etkisinin Belirlenmesi: Deneysel Çalışma 

  Asker, Nilay Hayriye; Özkan, Vildan; Özkan, Abdullah (Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2020)

  Bu çalışmada, su bazlı sondaj çamuruna (Na-Bentonit bazlı) fonksiyonelleştirilmiş karbon nanotüpün etkisinin tespiti amaçlanmıştır. Bu kapsamda su bazlı sondaj çamurları hazırlanmış ve kimyasal buhar biriktirme (CVD) yöntemi ...

• Experimental Investigation of the Effects on Rheological and Filtration Properties of Water-Based Drilling Mud of Fly Ash Addition with Different Particle Size and Concentration 

  Özkan, Abdullah; Turan, Sıtkı Ekrem; Özkan, Vildan (Erzincan Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2020)

  Performance of the drilling fluid is a great concern in drilling operations. Recently, many studies have been carried out on how to perform drilling operations more economically and effectively. Herein this paper effect ...

• Modelling, sensitivity and exergy analysis of triple-pressure heat recovery steam generator 

  Mert, Suha Orçun; Özçelik, Zehra; Kök, Ceyda (Manas Journal of Engineering, 2020)

  Related to the increasing demand for environmental pollution and electrical energy, combined cycle power plants (CCPP) are increasingly important. So, It is necessary that increasing the performance of power plants, reducing ...

• Kızıldere Formasyonu (İskenderun-Arsuz/HATAY) Kumtaşlarında Micro-CT Yöntemiyle Mikroporozite Belirlenmesi 

  Avcu, Melda; Yeşilot Kaplan, Meryem (El-Cezerî Fen ve Mühendislik Dergisi, 2021)

  Bu çalışmanın amacı Arsuz-İskenderun (Hatay) yöresinde gözlemlenen kumtaşlarının mikroporozitesini Micro-CT ve görüntü işleme yöntemleriyle belirlemek ve makro porozite değerleriyle karşılaştırmaktır. Kızıldere formasyonu ...

• Bor İçerikli Atık Killerin Sondaj Çamurlarında Kullanımı 

  Vapur, Hüseyin; Kök, Onur Eser; Erdoğan, Yasin (Bor Dergisi, 2021)

  Bu çalışmada, Eskişehir ili Kırka ilçesinden temin edilen bor işletme tesisi proses katı atıklarının (PKA) sondaj çamurlarında kullanılabilirliği araştırılmıştır. Çalışma kapsamında Amerikan Petrol Enstitüsü (API) Spec. ...

• Cost Analysis of Inhibitive Drilling Fluids 

  Yalman, Emine; Federer-Kovacs, Gabriella; Depci, Tolga (International journal of energy studies, 2021)

  The main objective of this study is to provide a better understanding of inhibitive water-based drilling fluid's central cost drivers. In this study a comparison of costs is provided between two polymer drilling fluid ...

• Biochar Produced from Co-Pyrolysis of Olive Pomace & Crude Oil as an Adsorbent for Cr (VI) Removal from Aqueous Solutions 

  Almezgagi, Maha; Kaya, Gülcihan Güzel; Kar, Yakup; Devci, Hüseyin (Iranian Institute of Research and Development in Chemical Industries, 2022)

  This study investigated aqueous solution treatment to remove Cr (VI) using a biochar-based adsorbent. Olive pomace and crude oil were used to synthesize the biochar adsorbent via co-pyrolysis for the first time. The biochar ...

• 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, ...

• 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. ...

• Detailed low temperature studies on thermoelectric performance of K-doped Bi2Ca2Co2Oy ceramics fibers 

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

  The effect of K substitution for Ca in Bi2Ca2-xKxCo2Oy (x = 0.0, 0.05, 0.075, 0.10, and 0.125) thermoelectric ceramics, produced via laser floating zone (LFZ) method, have been systematically investigated. XRD patterns are ...

• An Innovative Experimental Study on Improving the Rheological Properties of Na-Bentonite Water Based Drilling Muds using Graphene, Graphene Oxide and Graphene Oxide Functionalized with Gold Nanoparticles 

  Özkan, Abdullah; Tıknas, Semih; Özkan, Vildan (Institute of Physics, 2022)

  In this study; it is aimed to improve the rheological properties of Na-Bentonite water based drilling muds (WBDM) by graphene, graphene oxide (GO) and graphene oxide functionalized with gold nanoparticles (AuNPs/GO) at ...

• A Review on Wind Power Forecasting Regarding Impacts on the System Operation, Technical Challenges, and Applications 

  Depci, Tolga; İnci, Mustafa; Savrun, Murat Mustafa; Büyük, Mehmet (Wiley, 2022)

  Wind power forecasting's (WPF) technical improvements exhibit that the smooth forecasting of wind power is essential in executing operational management like energy balance, grid reliability, scheduling maintenance, and ...

• A new approach to estimate drilling time, rate of penetration, and drillability of formations in oil and gas exploration and production basins of Turkey 

  Özdemir, Adil; Palabıyık, Yıldıray; Yaşar, Ergül; Güllü, Ahmet (Springer, 2022)

  It is of great importance that the drilling program required for the newly drilled wells is estimated by using the drilling data of the previously drilled wells in a field or basin to complete the drilling under economic ...

• The determination of the molecular weight profiles and biochemical compositions eight macroalgae species from Turkey 

  Saygılı, Eyüp İlker; Naz, Mehmet; Okudan, Emine Şükran; Çetin, Zafer; Benlier, Necla; Öğüt, Eda; Güngör, Meltem; Bakır, Seda Büşra; Karadeniz, Pınar Günel; Veziroğlu, Salih; Gülses, Aydın; Depci, Tolga; Aktaş, Oral Cenk; Sayın, Selin (Islamic Azad University of Tonekabon, 2022)

  Algae biomass could be one of the most important economic values in near future. For this reason, we determined the biochemical compositions and molecular weight profiles (MWPs) of eight macroalgae; Green Algae (Codium ...

• Development of novel inhibitive water-based drilling muds for oil and gas field applications 

  Yalman, Emine; Federer-Kovacs, Gabriella; Depci, Tolga; Al Khalaf, Hani; Aylıkçı, Volkan; Aydın, Mustafa Göktan (Elsevier, 2022)

  The aim of this study is to develop inhibitive drilling fluid systems generated from waste materials that can contribute to the reduction of potential well instability problems caused by drilling fluid based on rheological ...

• Multipurpose acetic acid functionalized carbazole derivatives: Synthesis, electrochemical properties and electrochromic device applications 

  Hacıoğlu, Şerife Özdemir; Yiğit, Deniz; Akbey, Tuba E.; Udum, Yasemin Arslan; Güllü, Mustafa; Depci, Tolga; Toppare, Levent (Elsevier, 2022)

  In this study, synthesis of two multifunctional acetic acid functionalized carbazole bearing monomers; 2-(3,6-bis(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)-9H-carbazol-9-yl)acetic acid (M1) and 3,6-dithien-2-yl-9H-carbaz ...

• Characterization and evaluation of the antimicrobial properties of algal alginate; a potential natural protective for cosmetics 

  Sayın, Selin; Depci, Tolga; Naz, Mehmet; Sezer, Selda; Karaaslan, Merve Gökşin; Aras, Aycan; Uğur, Sinem; Çetin, Zafer; Saygılı, Eyüp İlker; Ateş, Burhan (Marmara University, 2022)

  Sargassurn vulgare was sampled by free dives in Iskenderun Bay, Hatay, Turkey, in September 2018. Sargassum vulgare is a material with high economic value because it has compounds that can be used in medical applications ...

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