Master Thesis
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Metin ŞİMŞEK, “SUBSTANCE DETECTION AND CLASSIFICATION BY ANALYIS OF EARTH FIELD NUCLEAR MAGNETIC RESONANCE (EF-NMR) SPECTROMETER MEASUREMENT DATA USING SIGNAL PROCESSING AND MACHINE LEARNING TECHNIQUES”, Marmara Üniversitesi, Fen Bilimleri Enstitüsü, (Başlangıç: 30 Mart 2023-Bitiş: 11 Haziran 2024) |
Papers (SCI, SSCI-Expanded)
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Cengiz Okay, “Classification of Edible Oils by using Time Domain NMR (TD-NMR)
Technique and Microwave (MW) Dielectric Spectroscopy”, Food Analytical Methods (2023) 16:1529–1536. |
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11 |
Ayse Maraşlı, Cengiz Okay, Özgül Karataş¸ Georgy Mozzhukhin, Bulat Rameev “Comparison of homemade TD-NMR device and commercial devices for detection of oil adulteration”, The Euroepean Physical Journal Plus, Eur. Phys. J. Plus (2023) 138:374 (12 pages) https://doi.org/10.1140/epjp/s13360-023-03980-9 |
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10 |
I.R. Vakhitov, A.A. Shemukhin, A.I. Gumarov, N.M. Lyadov, V.I. Nuzhdin,I.A. Faizrakhmanov, C. Okay, B.Z. Rameev, L.R. Tagirov and R.I. Khaibullin “Structural and magnetic studies of TiO2 rutile implanted with vanadium ions”, Materials Research Express, (2019) (doi.org/10.1088/2053-1591/ab447e) Vol.6 No.11 (2019) 116103 (12 pages) |
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9 |
A. Guler, S. Ballikaya, C. Boyraz, C. Okay, D. Shulgin, B. Rameev, “Thermoelectric properties and EPR analysis of Fe doped Cu12Sb4S13”, Journal of Solid State Chemistry, 269 (2019) 547–552. |
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8 |
Mahdi Ghasemifard, Misagh Ghamari, Cengiz Okay, “Bond length Ti(O) dependence of nano ATO3-based (A = Pb, Ba, Sr) perovskite structures:Optical investigation in IR range”, Modern Physics Letters B, Vol. 32, No. 1 (2018) 1750356- (12 Pages) |
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C.Okay, I. R.Vakhitov, V.F.Valeev, R.I.Khaibullin, B. Rameev, “Magnetic Resonance Study of Fe-Implanted TiO2 Rutile” Applied Magnetic Resonance, Vol.48 (2017) 347-360. (DOI 10.1007/s00723-017-0868-y). |
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6 |
C. Okay, B.Z. Rameev, S. Güler, R.I. Khaibullin, R.R. Khakimova, Yu.N. Osin, N. Akdoğan, A.I. Gumarov, A. Nefedov, H. Zabel, and B. Aktaş. “Optical and Magnetic properties of Ni implanted and post-annealed ZnO thin films”, Applied Physics A, Vol. 104, (2011), 667-675. |
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C.Okay, B.Z.Rameev, R.I.Khaibullin, M.Okutan, F.Yıldız, V.N.Popok, B.Aktaş, “Ferromagnetic Resonance Study of Iron İmplanted PET Foils”, Physica Status Solidi (a)" Vol. 203/7/ (2006), 1525-1532. |
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B.Z.Rameev, C.Okay, F.Yıldız, R.I.Khaibullin, V.N.Popok, B.Aktaş, “Ferromagnetic Resonance Invesitagions of Cobalt Implanted Polymides”, Journal of Magnetism and Magnetic Materials 278 (2004) 164-171. |
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3
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B.Z.Rameev, F.Yıldız, B.Aktaş, C.Okay, R.I.Khaibullin, E.P.Zheglov, J.C.Pivin, L.R.Tagirov, . “Ion Synthesis and FMR Studies of Iron and Cobalt Nanoparticles in Polymides”, Microelectronic Engineering 69 (2003) 330-335. |
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C.Okay, Bülent O. Akkoyunlu, Mete Tayanç, “Composition of Wet deposition in Kaynarca, Turkey”, Environmental Pollution 118 (2002) 401-410. |
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R.I.Khaibullin, V.N.Popok, V.V.Bazarov, E.P.Zheglov, B.Z.Rameev, C.Okay, L.R.Tagirov and B.Aktaş, “Ion Synthesis of Iron Granüler films in Polymide”, Nuclear Instruments and Methods in Phyics Research B 191 (2002) 810-814 . |
Papers (not included SCI, SSCI-Expanded)
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Cengiz OKAY, “Investigation of Dielectric Constants of Alcohol-Water Mixtures by Microwave (MW) Spectroscopy Technique”, Afyon Kocatepe University, Journal of Science and Engineering AKU J. Sci. Eng. 24 (2024) 021101 (255-259). |
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Cengiz OKAY, “Investigation of Relaxation Times of Alcohol-Water Mixtures by Time Domain NMR Technique”, Afyon Kocatepe University, Journal of Science and Engineering
AKU J. Sci. Eng. 23 (2023) 021101 (300-305). |
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Cengiz OKAY, Cihat Boyraz, Dmitriy A. SHULGIN, Georgy MOZZHUKHIN, Bulat RAMEEV, “ Fe ve As Elementleri ile Katkılı Tetrahedritlerin Karakterizasyonu ve Fiziksel Özellikleri”, Süleyman Demirel University, Journal of Natural and Applied Sciences ,Volume 22, Issue 2, (2018), 1016-1021. |
1 |
Cengiz OKAY, Perihan AKSU, Caner DEGER, Fikret YILDIZ, “Tailoring Magnetic Anisotropy of Cobalt-Gold Thin Films”, Turkish Journal of Physics, Nr.3, Vol. 42, (2018), 335-341. |
Papers (not included SCI, SSCI-Expanded)
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C.Okay, B.Rameev, F.Yıldız, R.I.Khaibullin and B.Aktaş. “Ferromagnetic Resonance and Electron Microscopy Studies of Cobalt Granuler Films in Polymides Synthesized by Ion Implantation Technique.” Balkan Physics Letter, 10 (4) (2002) 191-199. |
Book's Chapter
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R.I.Khaibullin, B.Z.Rameev, A.L.Stepanov, C.Okay, V.A.Zhikharev, I.B.Khaibullin , L.R.Tagirov, B.Aktaş, “Ion Beam Synthesis of Magnetic Nanoparticles in Polymers” Nanostuctured Magnetic Materials and their Applications, 33-54, (2004) Kluwer Academic Publisher- Neitherland,-İstanbul Turkey Isbn: 978-1-4020-2004-9, Isbn:978-1-4020-2200-5 (e-book),DOI:10.1007/978-1-4020-2200-5. |
Proceedings
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Georgy Mozzhukhin, Pavel Kupriyanov, Eren Dogan, A. Marasli, B. Colak, C. Okay, Maksut Maksutoglu, Sinan Kazan, Bulat Rameev,” NQR Detection of Ammonium Nitrate in Partially Shielded Volumes”, PhotonIcs & Electromagnetics Research Symposium (PIERS 2024)p.1-4 Chengdu, China, 21-25 April, 2024 DOI: 10.1109/PIERS62282.2024.10618742 ISBN: 979-8-3503-7590-9 |
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G. Mozzhukhin, M. Maksutoglu, B. Colak, A. Marasli,E. Dogan, K. Cinar, P. Kupriyanov, C. Okay, R. Khusnutdinov, S. Kazan, and B. Rameev, ” Detection of Nitrogen Substances by Nuclear Quadrupole Resonance in Large Volumes”, PhotonIcs & Electromagnetics Research Symposium (PIERS 2023),p.912, Prague, Czech Republic, 3-6 July, 2023. DOI: 10.1109/PIERS59004.2023.10221228 ISBN: 979-8-3503-1284-3 |
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Cengiz Okay, “Microwave (MW) Dielectric Spectroscopy investigations of benign and threat liquids”, Magnetic Resonance and its Applications, Saint-Petersburg University, 20 International School-Conference, SPINUS,2023, p.111, ISSN 2542-2049 |
3 |
Ayşe Maraşlı, Hacer İpek, Cengiz Okay, B. Z. Rameev, “Time Domain Nuclear Magnetic Resonance Investigations of Benign and Threat Liquids”, Magnetic Resonance and its Applications, Saint-Petersburg University, 20 International School-Conference, SPINUS,2023, p.97, ISSN 2542-2049 |
2 |
G. V. Mozzhukhin, B.Çolak, P.A.Kupriyanov, M.Maksutoğlu, S. Kazan, H.Ipek, A. Maraşlı, C.Okay, B. Z. Rameev,“The detection of NQR signals with use of the single-turn toroid”, Magnetic Resonance and its Applications, Saint-Petersburg University, 20 International School-Conference, SPINUS,2023, p.100, ISSN 2542-2049 |
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C.OKAY, A.Maraşlı, G. MOZZHUKHIN, B.RAMEEV, “ 1H NMR relaxation times of alcohol-water mixtures”, Magnetic Resonance and its Applications, Saint-Petersburg University, 16 International School-Conference, SPINUS,2019, p.103-105, |
Abstract (Oral and Poster Presentation)
35 |
Ö. Karataş, C. Okay, B. Özkal, S. Kazan, B.Z. Rameev, N. Cherkashin, E.M. Begishev , R.I. Khaibullin, “Magnetic anisotropy in rutile (TiO2) heavily implanted with cobalt ions: FMR, VSM and TEM studies”, Magnetic Resonance-Current State and Future Perspectives (EPR 80) (2024 Poster Sunum, p.172) September 23-27, 2024 Kazan Russia. |
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Metin ŞİMŞEK, Cengiz OKAY, “Dünya'nın Manyetİk Alanında Elde Edilen NMR Spektrum verisinin ön işleme Teknikleri ve Makine öğrenmesi kullanılarak kimyasal Madde Tipi Tespiti”, 2. BİLSEL INTERNATIONAL KORYKOS SCIENTIFIC RESEARCHES AND INNOVATION CONGRESS, (2024 Sözlü Sunum p.527-528) 10-11 MAY, 2024 MERSİN/ TÜRKİYE, ISBN: 978-625-6501-79-9 |
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Georgy Mozzhukhin, Pavel Kupriyanov, Eren Dogan, A. Marasli, B. Colak, C. Okay, Maksut Maksutoglu, Sinan Kazan, Bulat Rameev,” NQR Detection of Ammonium Nitrate in Partially Shielded Volumes”, PhotonIcs & Electromagnetics Research Symposium (PIERS 2024 Sözlü sunum),p.xxx Chengdu, China, 21-25 April, 2024. |
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Metin ŞİMŞEK, Cengiz OKAY, “Detection of Chemical substance Type from NMR Spectrum Data in the Earth’s Magnetic Field Using Machine Learning Techniques” 6. International Antalya Scientific Research and Innovative Studies Congress, (2023 Sözlü Sunum p.962), December 2-4 , 2023 Antalya –Türkiye, |
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Metin ŞİMŞEK, Pavel KUPRIYANOV, Cengiz OKAY, “ Machine Learning of NMR Spectra in the Earth’s Magnetic Field Substance Detection with Learning-Based Signal Processing”, 5th International Blacksea Modern Scientific Research Congress, (2023 Sözlü Sunum p.832-833), November 8-10, 2023, Rize-Türkiye. |
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G. Mozzhukhin, M. Maksutoglu, B. Colak, A. Marasli,E. Dogan, K. Cinar, P. Kupriyanov, C. Okay, R. Khusnutdinov, S. Kazan, and B. Rameev, ” Detection of Nitrogen Substances by Nuclear Quadrupole Resonance in Large Volumes”, PhotonIcs & Electromagnetics Research Symposium (PIERS 2023 Sözlü sunum),p.912, Prague, Czech Republic, 3-6 July, 2023. |
29 |
Cengiz Okay, “Microwave (MW) Dielectric Spectroscopy investigations of benign and threat liquids”, Magnetic Resonance and its Applications, 20 International School-Conference, (SPINUS,2023 Sözlü sunum), p.111, 27-30 March, Saint-Petersburg,Russia., ISSN 2542-2049 |
28 |
Ayşe Maraşlı, Hacer İpek, Cengiz Okay, B. Z. Rameev, “Time Domain Nuclear Magnetic Resonance Investigations of Benign and Threat Liquids Magnetic Resonance and its Applications, 20 International School-Conference, (SPINUS,2023 Sözlü sunum, p.97), 27-30 March, Saint-Petersburg,Russia. |
27 |
G. V. Mozzhukhin, B.Çolak, P.A.Kupriyanov, M.Maksutoğlu, S. Kazan, H.Ipek, A. Maraşlı, C.Okay, B. Z. Rameev, “The detection of NQR signals with use of the single-turn toroid”, Magnetic Resonance and its Applications, 20 International School-Conference, (SPINUS,2023 Sözlü sunum, p.100), 27-30 March, Saint-Petersburg,Russia.
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Cengiz OKAY, “Relaxation rates of alcohol-water mixtures in 1H NMR”, 4th International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT 2020) (Sözlü Sunum- sayfa 27), 22-24 October, 2020, Turkey. ISBN: 978-605-69925-2-0 |
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Ö.Karataş, C.Okay, R. Khaibullin, S.Kazan, L.Arda, B.Ramaev “FMR Analysis of Magnetic Anisotropies in Co-implanted TiO2 Rutile” MAGNETIC RESONANCE: CURRENT STATE AND FUTURE PERSPECTIVES (EPR-75) (2019 Poster sunum sayfa, 162) 23-29 September 2019, Kazan, Russia |
24 |
C.Okay, A. Maraşlı, İ.S. Ünver, G.Mozzhukhin, B. Rameev, “Non-Linear Concentration Behaviour of Alcohol-Water Mixtures Studied by TD NMR and MW Dielectric Spectroscopy”,AMPERE Nuclear Magnetic Resonance Summer School, (AMPERE NMR 2019-Poster Sunum sayfa 73) 23-29 June 2019, Zakopane-Poland. |
23 |
M.Asuman Sınmaz, Ayşe Maraşlı, Cengiz Okay, Bulat Rameev, “Bimodal Relaxation Time Distibution of Ethanol Water Mixtures Revealed by Inverse Laplace Transform Technique”, AMPERE Nuclear Magnetic Resonance Summer School, (AMPERE NMR 2019-Poster Sunum sayfa 94) 23-29 June 2019, Zakopane-Poland. |
22 |
C.Okay, A.Maraşlı, G. MOZZHUKHIN, B.RAMEEV, “ 1H NMR relaxation times of alcohol-water mixtures”, Magnetic Resonance and its Applications, 16 International School-Conference, (SPINUS-2019 Sözlü Sunum-Sayfa 103), 31 March-5 April, Saint-Petersburg,Russia. |
21 |
O. Karatas, S.Güler, C.Okay, S.Kazan, R. Khaibullin, B.RAMEEV, “ Textured growth of magnetic nanoparticles in implanted TiO2and ZnO single crystals as revealed by FMR”, Magnetic Resonance and its Applications, 16 International School-Conference, (SPINUS-2019 Poster Sunum-Sayfa 181), 31 March-5 April, Saint-Petersburg,Russia. |
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B. RAMEEV, Ö. KARATAŞ, B. OZKAL, C. OKAY, S. KAZAN, S. GÜLER, R.I. KHAIBULLIN, “MAGNETIC RESONANCE STUDIES OF TiO2AND ZnO SINGLE CRYSTALS IMPLANTED WITH 3d IONS” Academician G.B. Abdullayev,Centenary International Conference and School Modern Trends in Condensed Matter,Physics, (MTCMP – 2018 Sözlü Sunum-Sayfa 85), September 24-26, 2018, Baku, Azerbaijan, |
19 |
C.Okay , S. Kazan, S. Güler, R.I. Khaibullin, L. Arda, B. Rameev, “Magnetic resonance and VSM studies of Co implanted TiO2 single crystals”, 6th International Conference on Superconductivity and Magnetism (ICSM2018-Sözlü Sunum-Sayfa 245), 29th April- 4th May, 2018, Antalya, Turkey. |
18 |
S.Kazan, K. Yıldız, O.Karatas, B.Ozkal, M.Vafadar, B.Rameev, C.Okay and L.Arda, “Electric Field Dependent EPR Measurements of vacancy related substutional Fe+3 defects in SrTiO3 single crystal”, 6th International Conference on Superconductivity and Magnetism (ICSM2018-Poster-sayfa 670), 29th April-4th May, 2018, Antalya, Turkey. |
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Adi·l Güler, Cihat Boyraz, Cengiz Okay and Bulat Rameev,” Physical Properties of Fe doped Cu12Sb4S13” 1st International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT 2017) (Sözlü Sunum- sayfa 34), November 2-4, 2017, Tokat / Turkey. |
16 |
C. Boyraz, A. Güler, C. Okay, D.A. Shulgin, G. Mozzhukkin and B. Rameev," Process, characterization and ESR properties of 3d transiton ion doped-tetrahedrite compounds”, International Conference on Magnetism and Magnetic Materials (Sözlü Sunum- sayfa36), October 09- 10, (2017), London/UK. |
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C. Okay, B. Rameev, V. F. Valeev, R.I. Khaibullin, “ FMR Studies of Magnetic Anisotropy in Iron-Implanted Single Crystal Rutile Films”, 12th Nanoscience and Nanotechnology Conference (NanoTR-12), (Sözlü Sunum, sayfa 103), 03 -05 June, (2016), Elite Hotel Darıca- Kocaeli/Turkey. |
14 |
A. Güler, C. Okay, D. Shulgin, C. Boyraz, A. Şen, and B. Rameev, "EPR Studies of 3d transition ions doped tetrahedrite" 12th International Nanoscience and Nanotechnology Conference (NanoTR-12) (Sözlü Sunum, sayfa61,), 03 -05 June, (2016), Elite Hotel Darıca-Kocaeli/Turkey. |
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C. Okay, B. Rameev, V. F. Valeev, R.I. Khaibullin," Ferromagnetic Resonance Investigations of Fe-implanted Rutiles", 11th Nanoscience and Nanotechnology Conference (NanoTR-11 Poster Sunum), 22 -25 June, 2015, pp.3P/12, Ankara/Turkey.
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C. Okay, B.Z. Rameev, R.I. KHAIBULLIN, R.R. KHAKIMOVA, S. Güler, B. Aktaş, N. AKDOĞAN, A. NEFEDOV,“Room-temperature Ferromagnetisms in Ni-implanted ZnO Thin Films” International Conference on Superconductivity and Magnetism ICSM 2010 April 25-30 2010, pp.505, Antalya/Turkey. |
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C.Okay, B.Rameev, R.R.Abdullina, S. Güler, B. Aktaş , “Magnetic Resonance and VSM Studies of Ni-Implanted ZnO Thin Films“ EUROMAR (2008), Magnetic Resonance for the Future, July 6–11, (2008), pp.220, St. Petersburg, Russia. |
10 |
B.Z.Rameev, R.I.Khaibullin, S.Güler, H.Bayrakdar, B.Aktaş, C.Okay,“Magnetic Resonance and VSM Studies of Co and Fe Implanted TiO2 Rutile Single Crystals” International Conference on Nanoscale Magnetism (ICNM), June 25-29, 2007, pp.212 İstanbul, Turkey
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C.Okay, B.Rameev, R.I.Khaibullin, I.B.Khaibullin, F.Yıldız, M.Okutan, V.N.Popok, B.Aktaş, “FMR Investigations of Iron-Implanted Polyethelene Terepthalate Foils”, International Conference on Nanoscale Magnetism (ICNM), July 3-7, 2005, pp.60, Gebze, Turkey. |
8 |
R.I.Khaibullin, C.Okay, B.Rameev, M.Okutan, F.Yıldız, V.N.Popok, V.A.Zhikharev, B.Aktaş, I.B..Khaibullin, “Magnetic Percolation Transition in Polyethelene Terepthalate İmplanted by İron İons with Hıgh Fluences”, Nanoscale Properties of Condensed Matter Probed by Resonance Phonomena, NanoRes-2004, 15-19 August, pp.80, Kazan, Russia. |
7 |
R.I.Khaibullin, B.Rameev, C.Okay, E.P.Zheglov, V.A.Zhikharev, L.R.Tagirov, “Ion Synthesis of Magnetic Nanoparticles in Polymers”,Advanced Research Workshop, Nanostructured Magnetic Materials and Their Applications, ARW NMMA-2003 July 1-4, 2003, pp.12, İstanbul- Turkey. |
6 |
R.I.Khaibullin, V.N.Popok, B.Z.Rameev, V.V.Bazarov, C.Okay, L.R.Tagirov, “Structural, Magnetic and Electrical Studies of Fe-Implanted Polymides”, International Workshop on Polymer/Metal Nanocomposites, Faculty of Engineering Christian-Albrechts University Kiel, September 22-23, 2003 pp.23 Germany |
5 |
B.Rameev, C.Okay, F.Yıldız, R.I.Khaibullin and B.Aktaş, “Ferromagnetic Resonance Investigations of Cobalt Implanted Polymides” Moscow International Symposium on Magnetizm. (MISM 2002) June 20-24 2002, pp.265, Dedicated to the 250 Anniversary of Moscow State University, Russia. |
4 |
B.Rameev, F.Yıldız, B.Aktaş, C.Okay, R.I.Khaibullin, E.P.Zheglov, J.C.Pivin and L.R.Tagirov. “Ion Synthesis and FMR Studies of Cobalt and Iron Nanoparticles Implanted in Polymides” Nano and Giga Challenges in Microelectronics Research and Oppurtunities in Russia, Symposium and Summer School, September 10-13 (2002) pp.212, Moscow, Russia. |
3 |
B.Rameev, C.Okay, F.Yıldız, R.I.Khaibullin, S.I.Tarapov, L.R.Tagirov and B.Aktaş, “Electron Microscopy and Magnetic Resonance Investigations of Iron Implanted Polymides” Workshop on Nanostructured Magnetic Materials and Their Applications (NMMA-2001) , September 3-7 2001, pp.11, İstanbul/Turkey. |
2 |
R.I.Khaibullin, V.N.Popok, V.V.Bazarov, E.P.Zheglov, B.Rameev, C.Okay and B.Aktaş, “Ion Synthesis of Iron and Cobalt Granüler Films in Polymide”, Radiation Effect in Insulator REI-11, Congress Center “Caixa Geral de Depositos” September 3-7 2001, pp.203-204, Lisbon, Portugal. |
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Cengiz OKAY, R. Gürcan ORALTAY, “Wet Deposition of Pollutants in the İstanbul Region.” 35th IUPAC Conference, 14-19 August, 1995, İstanbul. |
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Abstract (Oral and Poster Presentation)
3. |
C.Okay, B.Rameev, F.Yıldız, R.I.Khaibullin and B.Aktaş. “Ferromagnetic Resonance and Electron Microscopy Studies of Cobalt Granuler Films in Polymides Synthesized by Ion Implantation Technique” Turk Fizik Dernegi 21.Fizik Kongresi Suleyman Demirel Universitesi, 11-14 Eylul 2002, sayfa 435, Isparta. |
2. |
Cengiz OKAY, R. Gürcan ORALTAY, “Hava Kirliliğinin Yerel ve Küresel Etkileri” Türk Fizik Derneği 15. Fizik Kongresi, 26-29 Eylül 1995, sayfa 181, Kaş-Antalya. |
1. |
Cengiz OKAY, R.Gürcan ORALTAY, “Hava Kalitesi Ölçümlerinde Doğal Temizlenme Mekanizmalarının Önemi: 1993-94 Dönemi Pendik-Kaynarca Yöresi Ölçümleri” Yanma ve Hava Kirliliği Kontrolü III. Ulusal Sempozyumu, ODTÜ Çevre Mühendisliği Bölümü, 11-13 Eylül 1995, sayfa 305, Ankara. |