Assoc. Prof. Dr. Gaye Özgür Çakal

Assoc. Prof. Dr. Gaye ÇAKAL

Ankara University

Institute of Nuclear Sciences

06100 Beşevler/ Ankara-Turkey

T +90 (312) 212 03 84 F +90(312)2153307

gcakal@ankara.edu.tr

EDUCATION

1995    BSc.     Middle East Technical University – Department of Chemical Engineering

1998    MSc.     Middle East Technical University – Department of Chemical Engineering

2004    Ph.D.    Middle East Technical University – Department of Chemical Engineering

EMPLOYMENT

1993                Summer Practice

Low Density Polyethylene Plant, Petkim Petrochemcial Complex, Aliağa, İzmir

1997-2005       Research Assistant

Middle East Technical University – Department of Chemical Engineering

2004 – 2005    Principal Investigator

Establishing a Pilot Plant and Laboratory to Produce Boron Compounds

National Boron Research Institute – METU Department of Chemical Engineering

2005 – 2012     Expert, Principal Investigator

Turkish Ministry of Energy, National Boron Research Institute

2012-               Ankara University Institute of Nuclear Sciences, Assist Prof. Dr.

RESEARCH AREAS

Alpha Spectrometry

Liquid Scintillation Counting (LSC)

Sample Preparation for Alpha Spectrometry and LSC

Use of Boron End-products as Neutron Absorbers

Production of Inorganic Borates

Production of Boron Doped Materials (polymer, etc.)

Boron Nitride Coating and its Medical Applications

PUBLICATIONS

THESIS

 1. Çakal Gaye Ö., “Study of Reactivity of Coal in Carbonization and Gasification by Thermogravimetric Analysis”, MSc Dissertation, METU Department of Chemical Engineering, September 1998.

2. Çakal Gaye Ö., “Dynamic Behavior of Continuous Flow Stirred Slurry Reactors in Boric Acid Production”, PhD Dissertation, METU Department of Chemical Engineering, June 2004.

 PATENTS

 1. M. Kılınç, G. Bayram, G. Çakal, A. Yılmaz, İ. Eroğlu, S. Özkar, “Pet Based Composite Construction Material and Its Production Process”, TR 2008 04252 B

2. G. Çakal, F. Soylu, M.E. Çelen, “Sodium Pentaborate and its Production Process” TR 2006 04991 B

3. D. Gürhan, G.Ö. Çakal, İ. Eroğlu, S. Özkar, “ 3.5 Mole Hydrated Zinc Borate Production” TR 2006 02072 B

PAPERS

1. Çakal G.Ö., Eroğlu, İ., Özkar, S., “Gypsum Crystal Size Distribution in Four Continuous Flow Stirred Slurry Boric Acid Reactors in Series Compared with the Batch”, Journal of Crystal Growth, Vol. 290, pp. 197-202, 2006.

2. Çakal G.Ö., Yücel H., Gürüz A.G., “Physical And Chemical Properties of Selected Turkish Lignites and Their Pyrolysis and Gasifıcation Rates Determined By Thermogravimetric Analysis”, Journal of Analytical and Applied Pyrolysis, Vol. 80, pp. 262-268, 2007.

3. Çakal G.Ö., Eroğlu, İ., Özkar, S., “Simulation Of Gypsum Crystallization in Continuous Boric Acid Slurry Reactors by Microfluid and Macrofluid Models”, Journal of Crystal Growth, Vol. 360, pp. 240-247, 2007.

4. Gürhan D., Çakal G.Ö., Eroğlu, İ., Özkar, S., “Improved Synthesis of Fine Zinc Borate Particles Using Seed Crystals”, Journal of Crystal Growth, Vol. 311, pp. 1545-1552, 2009.

5. Kılınç M., Çakal G.Ö., Yeşil S., Bayram G., Eroğlu, İ., Özkar, S., “Scale Up Synthesis of Zinc Borate From The Reaction of Zinc Oxide and Boric Acid in Aqueous Medium”, Journal of Crystal Growth, Vol. 312, pp. 3361-3366, 2010.

6. Çakal G.Ö., Göğebakan Z., Coşkun S., “Investigation of Synergistic Effect of Boron on Fire Retardancy of Cotton Fabrics”, Tekstil ve Konfeksiyon, Vol. 21, Issue: 3, pp. 265-271, 2011.

7. Çağlar G.S., Çakal G.Ö., Yüce E., Pabuccu R., “Evaluation of Serum Boron Levels and Lipid Profile In Pregnancies With or Without Gestational Diabetes”, Journal of Perinatal Medicine, Vol. 40, Issue 2, pp. 137-140, 2012.

8. Çakal G.Ö., “Production of fine zinc borate in industrial scale”, Chemical Industry & Chemical Engineering Quarterly, Vol. 18, Issue 4, pp. 547−553, 2012.

 INTERNATIONAL CONFERENCE PAPERS

1. A.Erdoğdu, G.Ö.Çakal, N.Özkar, S.Özkar, İ. Eroğlu, “Effect of Particle Size of Colemanite on Gypsum Crystallization During Boric Acid Production”, pp. 42-49, WASIC Workshop on Advance in Sensoring in Industrial Crystallization, 18-20 June 2003, İstanbul, Turkey

2. G.Ö. Çakal, A. Erdoğdu, N. Özkar, S. Özkar, İ. Eroğlu, “Simulation of Gypsum Crystallization in Continuous Boric Acid Reactors by Microfluid and Macrofluid Models”, pp. 50-57, WASIC Workshop on Advance in Sensoring in Industrial Crystallization, 18-20 June 2003, İstanbul, Turkey

3. A. Erdoğdu, G.Ö. Çakal, S. Özkar, İ. Eroğlu, “The Effect of Stirring Rate on the Dissolution of Colemanite and Particle Size of Gypsum Crystals during the Boric Acid Production in a Batch Reactor”, pp. 319-325,  Proceedings of the 2nd  International Boron Symposium, 23-25 September 2004, Eskişehir, Turkey

4. G.Ö. Çakal, A. Erdoğdu, İ. Eroğlu, S. Özkar, “Comparison of the Particle Sizes of Gypsum Crystals Obtained in the Production of Boric Acid by Batch and Continuous Flow Systems”, pp. 311-318,  Proceedings of the 2nd  International Boron Symposium, 23-25 September 2004, Eskişehir, Turkey

5. G.Ö. Çakal, S. Özkar, İ. Eroğlu, ”Particle Size Distribution of Gypsum Crystals in Four Continuous Flow Stirred Slurry Reactors in Series”, VDI-Berichte 1901.1, art. no. B-32, pp. 465-471, VDI Verlag GmbH, Düsseldorf 2005, Proceedings of the16th International Symposium on Industrial Crystallization, 11-14 September 2005, International Congress Center, Dresden, Germany

6. G. Çakal, F. Soylu, M.E. Çelen, S. Şener, S. Taban, S.B. Shukla, “Development of New Boron Micronutrient and Determination of Product  Applications”, Advances in Plant and Animal Nutrition, Springer, The Netherlands, 2007, pp. 183-187, Proceedings of the 3rd International Symposium on All Aspects of Plant and Animal Nutrition, 10-13 September 2005, Huazhong Agricultural University, Wuhan, China

7. D. Gürhan, İ. Eroğlu, G.Ö. Çakal, S. Özkar, “Kinetics of Zinc Borate Production Reaction from Zinc Oxide and Boric Acid”, pp. 231-236, Proceedings of the III. International Boron Symposium, 2-4 November 2006, Ankara, Turkey

8. Ö. Dervişoğlu, I. Aşar, İ. Eroğlu, C. Özgen, G.Ö. Çakal, “Inferencial Control of Boric Acid Production System”, pp. 245-252, Proceedings of the III. International Boron Symposium, 2-4 November 2006, Ankara, Turkey

9. M. Kılınç, S. Yeşil, G. Çakal, G. Bayram, S. Özkar, and I. Eroğlu, “Production and Characterization of Hydrated Zinc Borate”, Somer Symposium Series I, page:51,  14-15 May 2007, Ankara, Turkey (poster presentation)

10. A.G.Çelik, Çakal G.Ö., Nas. C., Saka M., “Bleaching of Mechanical Pulp with Sodium Perborate”, 19th Industrial Minerals International Congress & Exhibition, IM19, 30 March – 2 April 2008, Hilton Hotel, Athens, Greece (poster)

(http://www.metalbulletin.com/Events/Details/Element.aspx?eventId=558&typeId=3)

11. M. Kılınç, G. Bayram, A. Yılmaz, G. Çakal, I. Eroğlu and S. Özkar,  “Characterization of Flame Retardancy and Effect of Synergism on PET Based Composites via Phosphate Based Flame Retardant Additives”, Proceedings of the Polymer Processing Society 24th Annual Meeting, PPS-24, June 15-19, 2008 Salerno, Italy

12. B. Baltacı, G. Ö. Çakal, G. Bayram, İ.Eroğlu, S. Özkar, “Effect of Using Polymeric Additive on the Synthesis of Zinc Borate”, pp. 160, 6th Chemical Engineering Conference for Collaborative Research in Eastern Mediterranean Countries, EMCC-6, Atlantis Hotel, Belek, ANTALYA, TURKEY, March 7-12, 2010 (poster presentation)

13. G.S. Çağlar, G.Ö. Çakal, E. Yüce, R. Pabuccu, “Evaluation of Serum Boron Levels and Lipid Profiles in Pregnancy with or without Gestational Diabetes”, ISTERH International Society For Trace Elements Research in Humans, Trace Elements in Health and Disease:  Essentiality, Toxicity, Rixos Premium Hotel, Belek, Antalya, Turkey, October 16-21, 2011

14. S.D Cengiz, G. Çağlar, G. Çakal, “Maternal and Umbilical Cord Blood Boron Levels in Term Gestations” The 14th World Congress on Controversies in Obstetrics, Gynecology & Infertility, All About Women’s Health, Paris, France, November 17-20, 2011 (poster presentation)

15. A.G.Çelik, Çakal G.Ö., A.M. Kılıç, “Effect of Temperature on the Thermal and Physical Properties of Espey Colemanite”, 8th International Industrial Minerals Symposium, İstanbul, Turkey, November 29-30, 2012.

 INTERNATIONAL CONFERENCE PAPERS (not published)

16. Gürüz A.G., Yücel G.Ö., Yücel H., “Study of Reactivity of Coal in Carbonization and Gasification by Thermogravimetric Analysis”, AIChE American Institute of Chemical Engineers Annual Meeting, November 1999, Dallas, USA (poster presentation)

17. Çakal G.Ö., Eroğlu, İ., Özkar, S., “Simulation of Continuous Boric Acid Slurry Reactors by Microfluid and Macrofluid Models”, AIChE American Institute of Chemical Engineers 2006 Annual Meeting, November 12-17, 2006, San Francisco Hilton, San Francisco, California (oral presentation)

NATIONAL CONFERENCE PAPERS

1. G.Ö. Yücel, G.A. Gürüz, H. Yücel, “Termogravimetric Analiz Yöntemi ile Türk Kömürlerinin Karbonizasyon ve CO2 Aktivasyonu Sonucu Reaksiyona Girme Hızlarının Belirlenmesi”, III. National Chemical Engineering Congress, Atatürk University, Erzurum, pp. 545-550, 1-4 September 1998.

2. A. Erdoğdu, G.Ö., Çakal, S.Özkar, İ. Eroğlu, “Investigation of the Dissolution Kinetics of Colemanite Mineral in Sulphuric Acid” RM-44, 6. National Chemical Engineering Congress, Ege University, Bornova, İzmir, 2004

3. G.Ö., Çakal, S.Özkar, İ. Eroğlu, “Effect of Colemanite-Sulphuric Acid Feed Ratio on the Product Purity in Continuous Flow Stirred Boric Acid Reactors”, RM-43, 6. National Chemical Engineering Congress, Ege University, Bornova, İzmir, 2004

4. D. Gürhan, G.Ö. Çakal, İ. Eroğlu, S. Özkar, “Investigation of the Parameters Effecting Zinc Borate Production in a Batch Reactor”, I. National Boron Workshop, Ankara, pp. 223-230,  28-29 April 2005

5. Ö. Dervişoğlu, I. Aşar, G. Çakal, İ. Eroğlu, C. Özgen, “Inferencial Control of Boric Acid Production System”,  8. National Chemical Engineering Congress, Malatya, 2008

6. A.G. Çelik, M.Saka, M.E.Çelen, G.Ö. Çakal, “Bleaching of Fresh Paper Pulp in the Mill with Sodium Perborate Monohydrate”, II. National Boron Workshop, Ankara, pp. 125-131, 17-18 April 2008

7. M. Kılınç,  S. Yeşil, G. Çakal, G. Bayram, İ. Eroğlu, S. Özkar, “Pilot Plant Production and Characterization of 3.5 Mol Hydrated Zinc Borate”, II. National Boron Workshop, Ankara, 17-18 April 2008

8. M. Kılınç, G. Bayram, A. Yılmaz, G.Ö. Çakal, İ. Eroğlu, S. Özkar, “Synergistic Effects of Phosphate and Boron Based Flame Retardants on the Poly(etylene terephytalate) (PET) Based Composites and Determination of the Flame Behavior and Mechanic Properties of Composites”, 3. National Polymer Science and Technology Congress and Fair, Polymer Science and Technology Society, Kocaeli University, pp. 46, May 2010.

9. B. Baltacı, G.Ö. Çakal, G. Bayram, İ. Eroğlu, S. Özkar, “Effect of Surfactant Type on the Zinc Borate Synthesis” 9. National Chemical Engineering Congress, 2010, Gazi University, June 2010

PROJECTS

1. Project No: AFP 96-03-04-02, METU, Investigator

Determination of the Reactivities of Coals as a Result of Carbonization and Activation by Thermogravimetric Analysis Process

2. Project No: BAP- 2001-07-02-02, METU, Investigator

Production of Boric Acid in Continuous Flow Stirred Slurry Reactors

3. Project No: BOREN -2005-E0022, Principal Investigator

Enhancement of Zinc Borate Production Technology and Investigation of Its Use as a Flame Retardant

Budget: 160,500 TL – Duration: 24 months

4. Project No: BOREN-2005- B0116, Principal Investigator

Pilot Plant Production of Specialty Boron Products Used as a Micronutrient in Agriculture and as Flame Retardant and Insecticide in Wood Applications

Budget: 314,756 TL – Duration: 24 months

5. Project No: BOREN-2007-B0188, Investigator

Use of Boron Doped Cement in Concrete Road Construction

Budget: 1,500,000 TL – Duration: 36 months

6. Project No: BOREN -2008 – Ç0179, Supervisor

Production of Small Particle Sized Zinc Borate and Its Use as a Flame Retardant

Budget: 72,000 TL – Duration: 27 months

7. Project No: BOREN-2008- B0201, Investigator

Project Preparation and Concept Development: Inorganic Borates, Flame Retardancy of Textile Products

Budget: 100,000 TL  – Duration: 24 months

8. Project No: BOREN- 2011-B0313, Principal Investigator

Technology Planning and Roadmap of Boron Products and Technologies

Budget: 79,591 TL – Duration: 13 months

9. Project No: SBAG – 111S111, Investigator (in progress)

Surface Properties of Boron Nitride Coated Titanium Implants

Budget: 147,050 TL – Duration: 24 months

10. Project No: 12A4045002,  Principal Investigator (in progress)

The Enhancement of Measurement Capacity of Low Level Radioactivity by Liquid Scintillation Counting System in the Laboratories of Institute of Nuclear Science

Budget: 300,000 TL – Duration: 12 months