Browsing by Author "Depci, Tolga"
Now showing items 1-20 of 56
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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 ... -
Characterization of thermoluminescence kinetic parameters of beta irradiated B doped Ca5(PO4)3OH powder obtained from eggshell
Depci, Tolga; Oğlakçı, Mehmet; Selda, Sezer; Yücel, Ayşegül; Doğan, Tamer; Souadi, Galib O.; Topaksu, Mustafa; Can, Nurdoğan (Elsevier, 2021)In this study, we have synthesized B doped Ca5(PO4)3OH (HAP) by a sonication chemical method. The thermoluminescence (TL) properties of the family of synthesized samples (B doped Ca5(PO4)3OH (HAP) were investigated using ... -
Co-liquefaction process olive bagasse and peat with lignite and the effect of biomasses on the products and oil yield
Depci, Tolga; Karta, Mesut; Karaca, Hüseyin (Elsevier, 2018)In the present study, instead of the burning the Elbistan lignite (L) having low calorific value and the biomasses (Balikesir Olive Bagasse "OB" and Adiyaman peat "P"), co-liquefaction process was conducted in order to ... -
A Comprehensive Study on Fuel Adulteration Sensing by Using Triple Ring Resonator Type Metamaterial
Bakır, Mehmet; Dalgaç, Şekip; Karaaslan, Muharrem; Karadağ, Faruk; Akgöl, Oğuzhan; Ünal, Emin; Depci, Tolga; Sabah, Cumali (Electrochemical Society Inc., 2019)A novel shaped metamaterial sensor application which is designed to operate in X band is proposed. A new sample holder for easy operation is designed and placed just behind the proposed structure in X band. Since the ... -
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 ... -
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 ... -
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 ... -
Development of Water-Based Drilling Fluid in Miticration of Differential Sticking Tenuency
Yalman, Emine; Federer-Kovacs, Gabriella; Depci, Tolga (University of Zagreb, 2022)The objective of the study is to design a drilling fluid that prevents differential pressure pipe sticking tendency caused by drilling fluid with fly ash that is an industrial waste generated from the combustion of coal. ... -
Distribution of trace elements and the influence of major-ion water chemistry in saline lakes
Mochizuki, Akihito; Murata, Takahiro; Hosoda, Ko; Dulmaa, Ayuriin; Ayushsuren, Chananbaatar; Ganchimeg, Darmaa; Drucker, Valentin V.; Fialkov, Vladimir A.; Depci, Tolga; Üner, Tijen; Oğhan, Fatih; Sugiyama, Masahito (Wiley, 2018)Although the water chemistry in saline lakes can differ drastically due to subtle differences in inflowing water conditions, the concentrations, distributions, and geochemical behaviors of trace elements in such environments ... -
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 ... -
Effect of Carbon Nanotube Addition on the Superconducting Properties of BSCCO Samples Textured via Laser Floating Zone Technique
Özçelik, Bekir; Ergin, I.; Depci, Tolga; Yavuz, Halil İbrahim; Madre, María Antonieta; Sotelo, Andres (Springer, 2019)In this research, the effect of carbon nanotube (CNT) addition on the structural and superconducting properties of Bi2Sr2CaCu2Oy + x wt% CNT materials with x = 0, 0.5, 1, and 3 prepared by solid state method, followed by ... -
Effect of n-CaCO3 on fresh, hardened properties and acid resistance of granulated blast furnace slag added mortar
Bankir, Müzeyyen Balçıkanlı; Öztürk, Murat; Sevim, Umur Korkut; Depci, Tolga (Elsevier, 2020)Nano size CaCO3 (n-CaCO3) particles were used as an additive into the Ground Granulated Blast Furnace Slag (GGBS) added mortar to investigate their effects on fresh, hardened properties and acid resistance. Setting time, ... -
Enhancing electrochemical and electrochromic performances of carbazole comprising monomer via copolymerization with 3,4-ethylenedioxythiophene (EDOT)
Kalay, Işıl; Yiğit, Deniz; Güllü, Mustafa; Depci, Tolga; Toppare, Levent; Hacıoğlu, Şerife Özdemir (Elsevier, 2020)In this study, two novel electrochromic copolymers (CoP1.3 and CoP1.5) were synthesized via electrochemical methods and characterized. The comonomers used in the synthesis were 3,4-ethylenedioxythiophene (EDOT) and a ... -
Exergetic Simulation and Performance Analysis of the Effect of Flow Patterns in PEMFCs
Mert, Suha Orçun; Toprak, M. M.; Depci, Tolga (Int Center Applied Thermodynamics, 2019)In this study, 6 different novel flow channels of the "proton exchange membrane" (PEM) type fuel cells were designed and modeled, while evaluations were conducted on three-dimensional channels of various designs using ... -
Exploring beta irradiation responses in Sr 2+-Doped hydroxyapatite: A thermoluminescence study
Bulcar, Kenan; Oğlakçı, Mehmet; Altowyan, Abeer S.; Bilgin, Ramazan; Yücel, Ayşegül; Sezer, Selda; Hakami, Jabir Wali; Depci, Tolga; Topaksu, Mustafa; Can, N. (Elsevier, 2024)This research investigates the structural and thermoluminescence (TL) properties of Sr2+-doped Ca5(PO4)3OH (HAp) phosphors. X-ray diffraction (XRD) analysis confirms that HAp has a hexagonal structure with a P63/m space ... -
Exploring the Impact of Lanthanum on Sodium Manganese Oxide Cathodes: Insight into Electrochemical Performance
Whba, Rawdah; Altundağ, Sebahat; Aydın, Mustafa Göktan; Kalyoncuoğlu, Burcu; Özgül, Metin; Depci, Tolga; Altın, Serdar; Şahinbay, Sevda (Wiley, 2024)This investigation focuses on nominally La-doped Na0.67MnO2, exploring its structural, electrochemical, and battery characteristics for Na-ion batteries. X-ray diffraction analysis reveals formation of composite materials ... -
High-Performance Ag-Doped Na0.67MnO2 Cathode: Operando XRD Study and Full-Cell Performance Analysis with Presodiated Anode
Kalyoncuoğlu, Burcu; Özgül, Metin; Altundağ, Sebahat; Altın, Emine; Moeez, Iqra; Chung, Kyung Yoon; Arshad, Muhammad; Aydın, Mustafa Göktan; Depci, Tolga; Altın, Serdar; Şahinbay, Sevda (American Chemical Society, 2023)The key challenges of Na-ion batteries are to design structurally stable electrodes and reach high-enough capacities with full-cells. In this study, we report the positive effects of Ag substitution/addition to Na0.67MnO2. ... -
Hydroxyapatite production and characterization from four pufferfish species teeth
Doğdu, Servet Ahmet; Turan, Cemal; Depci, Tolga; Bahçeci, Ersin; Sangün, Kemal; Ayas, Deniz (Hanyang University, 2024)The pufferfishes are invasive alien fish species in the Mediterranean Sea with a powerful toxin in its body called tetrodotoxin. It has no economic value and is very abundant all over the world's marine waters. Calcium ... -
Investigation of electrochemical performance of Na-ion batteries by hard carbon anodes produced by
Oktay, Zeynep Melek; Önal, Yunus; Depci, Tolga; Altundağ, Sebahat; Altın, Serdar; Yaşar, Sedat; Altın, Emine (Springer, 2023)Hard carbon is successfully fabricated using biomass of Prunusarmeniaca seed shells, and its structural properties are examined by different spectroscopic techniques. For using as an anode electrode in Na-ion batteries, ...
