1. OZDOGAN S, SUSTAINABLE UTILIZATION OF BIOMASS AND/OR COALS VIA GASIFICATION, German – Turkish TU9- Workshop on Sustainable Energy 12.-14.11.2008, TUBITAK MRC, Gebze, Kocaeli ,Turkey.

2. YILMAZ, B, OZDOGAN S, GOKALP, I, Contribution to the Numerical Analysis of Turbulent Lean Premixed Flames , 10th International Combustion Symposium, ICS2008. Sakarya, Turkey.

3. OZDOGAN S, OLGUN H, The Utilization of Biomass in Small to Medium Scale Gasifiers and Combustors for Heat and Power Applications in Turkey, World Renewable Energy Congress X, 19-25 July 2008, Glasgow, Scotland.

4. YILMAZ B, OZDOGAN S , GOKALP, I, Numerical Study of Turbulent Lean Premixed Methane-Air Flames Fuels and Combustion in Engines Conference (FCE08), 2008, ITU, İstanbul, Turkey.

5. OZDOGAN S , Matching coal properties with utilization options , Turkish-American Clean Energy Technologies Conference January 29-30 2008 , Istanbul, Turkey.

6. YILMAZ B, OZDOGAN S, ONBAŞIOĞLU S, GOKALP, I, , Contribution to the Numerical Modelling of Turbulent Premixed Conical Flames European Combustion Meeting 2007 ,ECM 2007, Chania, Greece.

7. ERSANLI Ç, GUL S , KAYAHAN U , GULER UC, OZDOGAN S , UTILIZATION OF BIOMASS IN INTEGRATED GASIFICATION COMBINED CYCLES , Success and Visions for Bioenergy Conference , 22 – 23 March 2007, Salzburg, Austria.

8. ERSOZ A , SARIOGLAN A, OZDOGAN S, Investigation of an integrated autothermal reformer and SOFC micro-cogeneration system for power generation, 16^th World Hydrogen Energy Conference, Lyon, France, 13-16 June 2006.

9. ERSOZ A , SARIOGLAN A, OLGUN H, BARANAK M, ATAKUL H, OZDOGAN S, The effect of heat supply on diesel evaporation as the 1^st step of hydrogen production, 16^th World Hydrogen Energy Conference, Lyon, France, 13-16 June 2006.

10. OZDOGAN S, KAYAHAN U, CAN GULER U, Integrated gasıfıcatıon combined cycle sımulatıon wıth THERMOFLOW-ıgcc WITH BAGASSE, 7th European Gasification Conference , Gasification 2006: 25 - 27 April 2006.

11. OZDOGAN S , Ersoz A , Olgun H , Simulation of Biomass and/or Coal Gasification Systems Integrated with Fuel Cells , First European Fuel Cell Technologies and Applications Conference, 14-16 Aralık, Roma, İtalya, 2005.

12. OZDOGAN S, ERSOZ A , OLGUN H, Simulation study of a PEM fuel cell system fed by hydrogen produced by partial oxidation, 1 st EUROPEAN HYDROGEN ENERGY CONFERENCE, 2-5, Grenoble, France September 2003.

13. OLGUN H, ERSOZ A, KAYA D, TIRIS M, AKGUN F, OZDOGAN S, Simulation study of a PEM fuel cell system with steam reforming, The First International Exergy, Energy and Environment Symposium , Izmir ,Turkey 13-17 July 2003 .

14. ERSOZ A, OLGUN H, GUNGOR C, AKGUN F , TIRIS M, , OZDOGAN S, Simulation study of a PEM fuel cell system with autothermal reforming, 16th International Conference on Efficiency, Costs, Optimization, Simulation and Environmental Impact of Energy Systems Copenhagen, Denmark , June 30 - July 2, 2003.

15. OLGUN H, ERSOZ A , OZDOGAN S , Integration of biomass gasification with pem fuel cell, First International Symposium on Process Intensification and Miniaturization, Newcastle, UK, pp. 38, ISBN 0- 9545956-0-2 , 17-21 August 2003.

16. OZDOGAN S , OLGUN H, ERSOZ A, KAYA D, TIRIS M, AKGUN F, Fuel Processing Options For PEM Fuel Cell Transport Applications , Grove Fuel Cell_Symposium-Fuel Cells Science and Technology2002, Amsterdam,Netherlands,2002.

17. OZDOGAN S Gürbüz Yücel H , New empirical and semi-theoretical methods for prediction of crude oil viscosities ECTP 2002 The 16^th European Conference on Thermophysical Properties, Imperial College, London,UK 1-4 Sept. 2002.

18. UNLU N, AKGUN F, OZDOGAN S , Energy Efficient Technologies, Workshop on Encouraging the Commercialisation of Energy Efficiency Activities in the Black sea Region, Black Sea Region OPET Associate, Black Sea Regional Energy Centre, , Istanbul ,11 Oct. 2001.

19. OZDOGAN S , KIRAN N , Integration of Process Energy Supply Options into Cleaner Production in the Textile Industry, The Kriton Curi International Symposium on Environmental Management in the Mediterranean Region, Proceedings , Vol.2, pp.947-954,July 1998.

20. TIRIS M, OZDOGAN S , EKINCI E , Air Pollution Due to Fossil Fuel Utilisation in the Turkish Transporation Sector, TIEES - 98, Second Trabzon International Energy and Environment Symposium, Proceedings ,pp.269-272, 26-29 July 1998.

21. OZDOGAN S UZUN D, ATAKUL H, ERDALLI Y, TIRIS M, Fuel and Emission Characterteristics of Sweet Sorghum and Sweet Sorghum / Lignite Briquettes”,TIEES-98, Second Trabzon International Energy and Environment Symposium, Proceedings, pp.129-13026-29 July 1998.

22. TIRIS M, EKINCI E, OZDOGAN S, Energy Based Air-Pollutant Emissions in Turkey, World Renewable Energy Congress-V,Florance, Italy, 19-25Sept.1998, Renewable Energy: Energy Efficiency , Policy and the Environment, Editör : A.A.M.Sayigh, Proceedings ,Vol. IV , pp.2555-2558,1998.

23. OZDOGAN S , UZUN D, ATAKUL H, ERDALLI Y, TIRIS M , Preparation and Utilisation of Sweet Sorghum and Sweet Sorghum/Lignite Briquettes, World Renewable Energy Congress-V, Florance-Italy,19-25 Sept. 1998, Renewable Energy: Energy Efficiency , Policy and the Environment, Editör : A.A.M.Sayigh,Proceedings ,Vol.III, pp.1989-1991,1998.

24. YUCEL GURBUZ H , OZDOGAN S, Pure Hydrocarbon Fluid Viscosities, 36^th IUPAC Congress.Geneve,Switzerland,17-22 Ağustos 1997, CHIMIA,Journal for Chemistry, No.7,pp.558,1997.

25. UZUN D, OZDOGAN S , SO₂ Emission Factors for Turkish Coals, ICCS’97-9^th International Conference on Coal Science, Essen-Germany, 7-12 Sept.1997, Editörler: A.Ziegler,K.H.van Heek,J.Klein and W.Wanzl , Proceedings , Vol. 3 , pp.1747-1750, 1997.

26. OZDOGAN S , CO₂ Emission Factors for Turkish Coals, ICCS’97-9^th International Conference on Coal Science, Essen,Germany, 7-12 Sept. 1997, Editörler:A.Ziegler,K.H.van Heek,J.Klein and W.Wanzl, Proceedings , Vol.3, pp.1743-1746,1997.

27. DEGERCAN F, EGRICAN N, OZDOGAN S , Cogeneration in the Process Industries: a Case Study for a Paper Mill, ECOS'96 Conference on Efficiency, Costs Optimization and Environmental Impact of Energy Systems, Proceedings , pp.231-237,Stockholm-Sweden, 25-27 June 1996.

28. OZDOGAN S , Reduction of Energy Based Carbon Emissions, TIEES-96 First Trabzon International Energy and Environment Symposium,Trabzon,29-31June 1996, Proceedings , Vol.3 ,pp.1137- 1142, 1996.

29. OZDOGAN S , UYGUR S, EGRICAN N, On the Formation and Dispersion of Toxic Combustion By- Products from Small-Scale Thermal Systems, The 4 th International Congress on Toxic CombustionBy-Products , University of California-Berkeley,A.B.D.,5-7 June 1995., Book of Abstracts, pp. 37,1995.

30. UYGUR S, OZDOGAN S , EGRICAN N, Exergy Analysis and Pollutant Dispersion Modelling of Residential Heating Options ECOS'95 -Conference on Efficiency,Costs, Optimization and Environmental Impact of Energy Systems , Istanbul 11- 14 July1995 , Proceedings , Vol.2,pp. 589-597, 1995.

31. UZUN D, OZDOGAN S ARIKOL M , The Combustible Sulphur Content of Turkish Coals, ICCS’95- 8 , The International Conference on Coal Science, , Proceedings ,Vol.1, pp. 79-82, Elsevier Science, ; also published in Coal Science and Technology 24 Series, Spain,10-15 Sept. 1995 .

32. OZDOGAN S , Technological, Environmental and Socio-Economic Factors Affecting the Implementation of New and Renewable Energy Conversion and Utilization COMSTECH-BAE University Workshop on Possible Energy Mixes in the Muslim World, Al-Ain, B.A.E, 31 Ekim-3 Kasım, 1993 ,Proceedings, pp.240 – 249, 1994.

33. OZDOGAN S , On the Feasibility of Steam and/or Electricity Production from Biomass in Turkey, 8^th European Conference on Biomass for Energy, Environment, Agriculture and Industry, Vienna, Austria 3-5 Nov. 1994, Proceedings, Vol.3, pp. 2212 – 2217, 1994

34. OZDOGAN S ARIKOL M , On the Potential and Economic Feasibility of Solar Industrial Process-Heat Applications in Selected Industries, Second World Renewable Energy Congress, Reading,UK,Proceedings ,Vol.2,pp.769-773,13-18 Sept. 1992.

35. OZDOGAN S, ARIKOL M , Assessing the Impacts of Fuel Prices, Fuel Properties and SO₂ Emission Standards on Levelized Energy Costs of Industrial Steam Generation Options, ECOS'92 International Symposium on Efficiency , Cost, Optimization and Simulation of Energys Systems-University of Zaragoza and ASME-Advanced Energy Systems Division-, Zaragoza, Spain, Proceedings , pp.643-648,15-18 June 1992.

36. OZDOGAN S , Fluidized-Bed Combustion of Low Calorific Value Fuels,UNITED NATIONS – ECONOMIC COMMISSION ON EUROPE – Committee on Energy /Coal - “Meeting of Experts on the Utilization and Preparation of Solid Fuels"- submitted as governmental report, Report No. COAL/GE.3/R.85/Add. 1 Jan., 1991. A summary of the same work was included in WORLD COAL INSTİTUTE CONFERENCE – COAL IN THE ENVIRONMENT by Prof.B.Vorobjev and Kui Nang Mak, Proceedings , pp.379, World Coal Institute Publication, April, 1991.

37. EGRICAN N, OZDOGAN S , Exergy Analysis of Energy Systems, International Workshop on Second Law Analysis , The Turkish Heat Science Society, Erciyes University, Proceedings , pp .34.1 - 34.12, 27-30 August, Kayseri, 1990.

38. OZDOGAN S, ARIKOL M , Assessment of Fluidized Bed Combustion Systems for Industrial Steam Generation in Turkey",FLOWERS'90- Florence World Energy Research Symposium, Florance-Italy 28 May-01 June 1990 ,FLOWERS'90 Proceedings ,pp.149-156, 1990.

39. OZDOGAN S , ARIKOL M, SERPIL A, Prospects of Solar Industrial Process Heat Applications in The Turkish Chemical Industry , International Mediterranean Solar and New-Renewable Energy Congress, Proceedings , pp.321-331, Antalya, Nov.1988.

40. OZDOGAN S, ARIKOL M, On the Feasibility of Industrial Fluidized Bed Combustion Systems in Turkey ENVIRONMENT'87 Symposium, Proceedings ,Vol.2, pp.1031-1038, Istanbul, June 1987.