Gholamhassan Najafi
Associate Professor
Speciality:  Internal Combustion Engines (Fuels, Combustion, Pollutions) and Renewable Energies
  • BS/BA: Urmieh University, Iran, Mechanics of Biosystems engineering, 1998-2002.
  • MS: Tarbiat Modares University, Tehran, Iran, Mechanics of biosystems Engineering Department, 2002-2004.
  • PhD: Bioenergy department, Tarbiat Modares University, Tehran, Iran, 2004-2008.
  • Phone: 48292322
  • Fax: 48292200
  • Email: g.najafi@modares.ac.ir
  • Address: P.O. Box: 14115-336. Jalale Ale Ahmad Express Way. Opposite to the Nasr Bridge. Tarbiat Modares University, Tehran, I.R. Iran.
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In the name of God
Curriculum Vitae
Updated on: May.21.2012
 
Name:Gholamhassan Najafi
Date & Place of Birth: 20th. June. 1979. Karaj
Nationality: Iranian
Status: Married, one son
Designation:Assistant Professor
Affiliation:University of Tarbiat Modares, Tehran, Iran
Contact Address:
Correspondence: P.O. Box: 14115-336. Jalale Ale Ahmad Express Way. Opposite to the Nasr Bridge. Tarbiat Modares University, Tehran, I.R. Iran.
Emails:University:g.najafi@modares.ac.ir, NAGAFY_14@yahoo. Com,
Tel.: Faculty: 0098(21)44196522-3, Office: 0098(21) 48292322, Fax: 0098(21) 44196524, Mobile: 0098(912)3664393 
Academic Qualification
·B. Sc.: Urmieh University, Iran, Mechanics of Agricultural Machinery, 1998-2002.
·M. Sc.: Tarbiat Modares University, Tehran, Iran, Mechanics of Agricultural Machinery, 2002-2004.
Topic of dissertation: Application and Comparing of Photoelacticity, Finite Element Method and Strength of Material's Formula for Study on Stress Distribution in Subsoiler. 19. September2004.
 
·Ph.D. Tarbiat Modares University, Tehran, Iran, Mechanics of Agricultural Machinery, 2004-2008.
Topic of Thesis: Investigation of Combustion Parameters on KIA-B3I Internal Combustion Engine Using Bioethanol Fuel. 14. March. 2009 
Background and Research Interests
1.    Agricultural Engineering Machineries: Design, Fabrication and Evaluation of Agricultural Machinery and Components
2.    Mechanical Engineering: Internal Combustion Engines (Fuels, Combustion, Pollutions). Finite Element Method (FEM), Artificial Neural Network (ANN).
3.    Renewable energies: Geothermal, Wind and Solar Energy, biomass (Biogas, Biofuels)
Courses taught
 
 (a)Courses taught at graduate level (M.SC.): 
· FEM (Finite Element Method (1))
· Advanced Strength of Materials
· Advanced Engineering Mathematics (1)
· Structure Analysis
 (b) Courses taught at Ph.D. level:
· Advanced Engineering Mathematics (2)
· FEM (Finite Element Method (2))
Titles of Thesis / Dissertation Supervised/supervising
 
Supervisor of Dissertation/ Thesis:
 
 (a) M.Sc. Dissertation:
  1. Rasoul Hematian,"Design, Fabrication and Evaluation of the New Blades for Sugar Cane Harvesting Machine" 28 Dec., 2010- January 31, 2012.
  2. Fateme Zare,"Design, Fabrication and Evaluation of olive pneumatic and impact harvesting machine", November 1, 2011- till now.
  3. Hojatollah Damirchi, "Design, Fabrication and Evaluation of stirling engine to produce electricity from biomass resources", November 1, 2011- till now. November 29, 2011- till now.
 
(b) Ph.D. Thesis:
 
Co-Advisor of Dissertation/ Thesis:
 
 (a) M.Sc. Dissertation:
  1. Seyed Shahabeddin Ghodsi, "Design, Development and Evaluation of a Gel Fillet Extraction Apparatus for Aloe Vera Leaves "7 Sep. 2010 - February 4, 2012.
  2. Ebrahim Fayazi Shishvan, "Biodiesel Fuel Production using Ultrasonic System", 8 Feb., 2011- till now.
  3. Maryam Mohammadi, "Design, development and evaluation of heat exchanger of micro scale combined heat and power system (MCHP)" November 29, 2011- till now.
  4. Seyed Hashem Samadi, "Dynamic modeling and verification of micro combined heat and power (MCHP) system in the micro scale using biogas" November 29, 2011- till now.
 
 
 (b) Ph.D. Thesis:
1.                  Mostafa Kiani Dehkiani, "A comprehensive experimental-theoretical investigation of a SI engine performance, combustion and exhaust emission parameters using gasoline-bioethanol blends" October 18,2011- till now.
Professional Experience
 
1- The admissions committee of forty-third session of heads of higher education in agriculture and natural resources, June 16-17, 2010, Faculty of agriculture, Tarbiat Modares University.
 
 
2- Cultural Committee, Faculty of Agriculture ( from May 28, 2011)
 
 
3- Expert Advisory Committee and University Council (from May 28, 2011)
 
 
4- Board member Association of Agricultural Machinery (from July 31, 2011)
 
 
5- Head of Mechanical Engineering Department of Agricultural Machinery (from August 29, 2011)
 
Papers in journals and conferences
Papers Published in Journals:
H Index: 7, documents: 13, Citation: 129
Motevali, A., Abbaszadeh, A.,Najafi G.,Minaei, S., and Ghobadian, B. Drying of jujube (zizyphus jujube mill) fruit: comparison of prediction from mathematical models and artificial neural networks. Australian Journal of Crop Sciences, 6(2):210-218, 2012. (ISI, I.F.= 0.899)
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Minaei, S., Motevali, A., Najafi G.,and Mousavi Seyedi, S.R. Influence of drying methods on activation energy, effective moisture diffusion and drying rate of pomegranate arils (Punica Granatum). Australian Journal of Crop Sciences, 6(4):584-591, 2011. (ISI, I.F.= 0.899)
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Darvishi, H., Khoshtaghaza, M. H. Najafi G.,and Zarein, M. Sunflower seeds drying characteristics and microwave energy consumption. International Agrophysics, accepted. (ISI, I.F.= 0.714)
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Abbaszadeh, A., Ghobadian, B., Omidkhah M.R. andNajafi G. Current biodiesel production technologies: a comprehensive review. Energy conversion and management. accepted (ISI, I.F.= 2.054)
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Hosseinzadeh, B., Khoshtaghaza, M. H., Mahdavian A. andNajafi G. Analysis and modeling of moisture desorption at different methods of Mint (Mentha spicata Huds) leaves drying. Thai Journal of Agricultural Science. accepted (ISI)
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Hemmatian, R.,Najafi G.,Hosseinzadeh, B., Tavakoli Hashjin T.,and Khoshtaghaza, M. H. Experimental and theoretical investigation of effects of moisture content and level in the crop on the shearing characteristics of sugar cane stemms. Journal of Agricultural Science and Technology, in press. (ISI, I.F.= 0.255)
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Safieddin Ardebili M., Ghobadian B., Tavakoli Hashjin T.and Najafi G. Determination of some Mechanical Properties of Castor Seed (Ricinus communis L.) to Design and Fabricate an Oil Extraction Machine. Journal of Agricultural Science and Technology, in press. (ISI, I.F. = 0.255)
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Motavali A. , Najafi G., Saeid Minaei , Solayman Abbasi & Ghaderi A.Microwave–vacuum drying of sour cherry: comparison of mathematical models and artificial neural networks, J Food Sci Technol, DOI 10.1007/s13197-011-0393-1,(Article in press) (ISI, I.F.= 0.477)
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Motavali A. , Minaei S., Hemmatian, R., Abbasi S., Ghaderi A. and Najafi G. Investigation variation of drying rate, effective diffusion coefficient, activation energy and energy consumption for microwave-vacuum mushroom. Journal of Food Science and Technology of Iran (Article in press).
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Najafi G.,and Ghobadian B. Geothermal resources in Iran: The sustainable future, Renewable and Sustainable Energy Reviews, 15 (2011) 3946– 3951. (ISI, I.F.= 4.567)
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Najafi G.,and Ghobadian B. Wind energy resources and development in Iran, Renewable and Sustainable Energy Reviews, 15 (2011) 2719–2728. (ISI, I.F.= 4.842)
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Najafi G.,Ghobadian B. and Yusaf T F, Algae as a sustainable energy source for biofuel production in Iran: A case study, Renewable and Sustainable Energy Reviews, 15 (2011) 3870– 3876. (ISI, I.F.= 4.567)
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Safieddin Ardebili M.,Ghobadian B., Najafi G.,and Chegeni A. Biodiesel production potential from edible oil seeds in Iran, Renewable and Sustainable Energy Reviews, 15 (2011) 3041–3044. (ISI, , I.F.= 4.842)
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Kiani Deh Kiani M., Ghobadian B., Tavakoli T., Nikbakht A.M. and Najafi G.,Application of artificial neural networks for the prediction of performance and exhaust emissions in SI engine using ethanol- gasoline blends, Energy, 35 (2010) 65–69. (ISI, I.F.=2.952)
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Kazemi M., Tavakoli Hashjin T., Alizadenia S., and Najafi G. Prediction oil parameter of connecting rod small end bearing of EF7 engine by using artificial neural network by simulation in AVL Exite software. The journal of engine research, Vol., 20, Autumn 2010, 22-29.
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Najafi G, Yusaf T F, Ghobadian B, Najmeddin VR and Yousif BF, Performance and exhaust emission of an SI engine fuelled with potato waste ethanol and its blends with gasoline, International Energy Journal 10 (2009) 215-226.
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Najafi G, Ghobadian B, Tavakoli T and Yusaf T F, “Potential of bioethanol production from agricultural wastes in Iran”. Renewable and Sustainable Energy Reviews 13 (2009) 1418–1427. (ISI, I.F.= 4.842)
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Najafi G, Ghobadian B, Tavakoli T, Buttsworth DR, Yusaf T F and Faizollahnejad M, “Performance and exhaust emissions of a gasoline engine with ethanol blended gasoline fuels using artificial neural network”. Applied Energy, 86 (2009), 630-639.(ISI, I.F.=2.209)
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Ghobadian B., Rahimi H. Nikbakht A.M., Najafi, G. and Yusaf, T.F. Diesel engine performance and exhaust emission analysis using waste cooking biodiesel fuel with an artificial neural network, Renewable Energy ,l 34 (2009), 976-982. (ISI,I.F.=2.226)
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Rahimi H., Ghobadian B., Yusaf T F, Najafi G. and Khatamifar M. Diesterol: An Environment – Friendly IC Engine Fuel. Renewable Energy, 34 (2009) 335-342. (ISI,I.F.=2.226)
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Ghobadian, B., Najafi G., Rahimi H and Yusaf T F. Future of Renewable Energies in Iran. Renewable and Sustainable Energy Reviews 13 (2009) 689–695. (ISI, I.F.= 4.842)
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Saiedi, M.R., Ghobadian, B., and Najafi, G. (1389). Experimental Investigation of a Diesel Engine Performance Parameters Using Biodiesel Fuel, Journal of engine research. 5th year, numbers 16, Persian date autumn of 1388. pp 29-35.
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Najafi G., Ghobadian B., Yusaf T.F. and Rahimi, H. Combustion Analysis of a CI Engine Performance Using Waste Cooking Biodiesel Fuel with an Artificial Neural Network Aid. American Journal of Applied Sciences 4(10): 759-767, 2007.
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Kiani Deh Kiani, M., Ghobadian, B., Rahimi. H., and Najafi, G. Investigating the Exhaust Emissions of a Spark Ignition Engine Using Gasohol. Journal of Fuel and Combustion. Volume 1, First year, the first number, Persian date Shahrivar 1387 (September 2008), Tehran. Iran. pp 33-40.
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Najafi, G.,Ghobadian, B. Nikbakht A.M. and Rahimi, H. (1385). Analysis of CI engine performance using a mixture of biodiesel- diesel fuel with artificial neural networks. Journal of the engine research. Third year, numbers 10 and 11, Persian date summer and autumn of 1385. pp. 6-15.
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Papers published in Conferences
 
Yahyaee, R., Ghobadian, B. and Najafi, G. Extraction of oil from fish waste for biodiesel production in Iran. 5th national symposium on losses of agricultural products. November 30, 2011, Tarbiat Modares University, Tehran, Iran.
 
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Hemmatian, R.,Najafi G.,Hosseinzadeh, B., Tavakoli Hashjin T. &  Khoshtaghaza, M. H. Investigation of effects of moisture content and level in the crop on the shearing characteristics of sugar cane stemms. 5th national symposium on losses of agricultural products. November 30, 2011, Tarbiat Modares University, Tehran, Iran.
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Hemmatian, R., Motavali A. , Minaei, S., Najafi G., Abbasi S., and Ghaderi A. Investigation variation of drying rate, effective diffusion coefficient, activation energy and energy consumption for microwave-vacuum mushroom. 5th national symposium on losses of agricultural products. November 30, 2011, Tarbiat Modares University, Tehran, Iran.
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Kazemi, M. Hemmatian, R., Najafi, G. and Tahmasbi. Determination of apparent elasticity coefficient of oak fruit using artificial neural network.5th national symposium on losses of agricultural products. November 30, 2011, Tarbiat Modares University, Tehran, Iran.
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Hemmatian, R., Najafi, G. Rahimi haji abadi A., and Kazemi, M. Modal Analysis of Stirling engine connecting rod using of finite element method. 4th National Conference on Mechanical Engineering. Azad university of Khomeyni shahr branch, November, 2011. Iran.
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Najafi G., Ghobadian B. and Yusaf T. BIOFUEL FROM MICROALGAE: ALTERNATIVE, SUSTAINABLE AND RENEWABLE FUEL. 10th International Conference on Sustainable Energy Technologies, Istanbul, Turkey, 4-7 Sep. 2011.
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Nematizade P., Ghobadian B. and Najafi G. G-Series: as an environmental friendly hybrid fossil-bio transportation fuel, 10th International Conference on Sustainable Energy Technologies, Istanbul, Turkey, 4-7 Sep. 2011.
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Abbaszadeh A., Ghobadian B., Najafi G. and Omidkhah M. R. ANALYTICAL AND FEM DESIGN OF MIXING SYSTEM IN STR BIODIESEL PRODUCTION, 10th International Conference on Sustainable Energy Technologies, Istanbul, Turkey, 4-7 Sep. 2011.
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Abbaszadeh A., Ghobadian B., Najafi G. and Omidkhah M. R. DESIGN, FABRICATION AND EVALUATION OF A NOVEL BIODIESEL PROCESSOR SYSTEM, 10th International Conference on Sustainable Energy Technologies, Istanbul, Turkey, 4-7 Sep. 2011.
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Abbaszadeh A., Ghobadian B. and Najafi G. CURRENT BIODIESEL PRODUCTION TECHNOLOGIES: A COMPARATIVE REVIEW, 10th International Conference on Sustainable Energy Technologies, Istanbul, Turkey, 4-7 Sep. 2011.
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Ghafoori M., Ghobadian B. and Najafi G. Effects of nano-particles on the combustion performance of a diesel engine using biodiesel- diesel blended fuel. 10th International Conference on Sustainable Energy Technologies, Istanbul, Turkey, 4-7 Sep. 2011.
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Abasian M., Ghobadian B. and Najafi G. Energy Balance Analysis for Potato Production in Hamadan Province of Iran. 10th International Conference on Sustainable Energy Technologies, Istanbul, Turkey, 4-7 Sep. 2011.
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Nematizade P., Khoshtaghaza M.H., Abasian M., Ghobadian B. and Najafi G. Drying Kinetics of Asian Pears (Pyrus Serotina Rehd) Using Thin-Layer Drying Models and Artificial Neural Networks. 10th International Conference on Sustainable Energy Technologies, Istanbul, Turkey, 4-7 Sep. 2011.
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Safieddin Ardebili M.,Ghobadian B., Najafi G.,and Chegeni A. Biodiesel production potential from edible oil seeds in Iran. 10th International Conference on Sustainable Energy Technologies, Istanbul, Turkey, 4-7 Sep. 2011.
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Motavali A. Abbaszadeh A., Minaei S. and Najafi G., Drying of jujube fruit: comparison of prediction from mathematical models and artificial neural networks. CIOSTA CIGR V conference, 29 June- 1 July 2011, Vienna, Austria.
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Hematian, Najafi, G. Tavakoli T., and Kazemi M. Analyzing of sugar cane harvesting machine's cutter blades using CAD/CAM/CAE methods. The 5th regional congress on advances in agricultural research (west of Iran), Kordestan University, Sanandaj, Iran, May 18- 19, 2011.
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Ghafoori, M., Layeghi, M., Ghobadian, B., Najafi, G. and Rashidi A. Effects of nano-particles on the combustion performance of a diesel engine using biodiesel- diesel blended fuel. The 9th Iranian nano science conference. Tarbiat Modares University, Tehran, Iran, March 3- 4, 2011.
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Ashtari, A.,Kazemi, M., Golmohammadi, A., Najafi, G. Stress analysis of HWL65B using Finite Element Method and Abaqus software. 1st regional conference on mechanical engineering. Islamic Azad University-Tehran branch, Iran, March 3, 2011.
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Kazemi, M., Najafi, G. Tavakoli hashjin T., Alizadehnia, S., and Turang, H. Verification of dynamic analysis results for cranckcase of engine using of combustion pressure. The 1st Iranian thermal science conference. Islamic Azad University-Mashhad branch, Iran, February 8- 9, 2011.
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Najafi, G. Ghobadian B., Yusaf T F and Alevad M. Investigation of performance and emission parameters using palm oil biodiesel- diesel blended fuels in diesel engine. The 1st Iranian thermal science conference. Islamic Azad University-Mashhad branch, Iran, February 8- 9, 2011.
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Noori, H., Masoumi, A. A. and Najafi, G. (2010). Modeling, Analysis and optimization of Beet Sugar Vibration Machine. The 6th National Conference on Agricultural Machinery Engineering & Mechanization (6NCAME). Persian date 24-25 Shahrivar 1389 (15-16 September 2010), Karaj, Tehran, Iran.
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Mahdavian, A., Aghel H., Minae S., Najafi, G. and Aghkhani M. H.(2010). Designing and manufacturing damping mechanism for whele set of two-way moldboard plough. The 6th National Conference on Agricultural Machinery Engineering & Mechanization (6NCAME). Persian date 24-25 Shahrivar 1389 (15-16 September 2010), Karaj, Tehran, Iran.
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Abbasian, M., Khoshtaghaza, M. H., Najafi, G. and Nematizadeh, P. (2010). Drying kinetics of Asian Pears (Pyrus Serotina Rehd) Using Thin-Layer Drying Models and Artificial Neural Networks. The 6th National Conference on Agricultural Machinery Engineering & Mechanization (6NCAME). Persian date 24-25 Shahrivar 1389 (15-16 September 2010), Karaj, Tehran, Iran.
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GolMohammadi, A., Kazemi, M., Ashtari, A., and Najafi, G. (2010). Modal analysis of Loader Boom HWL65B by finite element method. The 6th National Conference on Agricultural Machinery Engineering & Mechanization (6NCAME). Persian date 24-25 Shahrivar 1389 (15-16 September 2010), Karaj, Tehran, Iran.
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Kazemi, M., Tavakoli Hashjin, T., Najafi, G. and Alizadenia, S. (2010). Dynamic Analysis of Crank-Slider Mechanism Engine by Using AVL EXCITE Software. The 6th National Conference on Agricultural Machinery Engineering & Mechanization (6NCAME). Persian date 24-25 Shahrivar 1389 (15-16 September 2010), Karaj, Tehran, Iran.
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Saidi Neicharan M., Ghobadian B., Tavakoli T., Khoshbakhtisarayi R. and Najafi G. Effect of Biodiesel-Diesel Blended Fuels on Diesel Engine Ignition Delay. 6th International Conference of Internal Combustion Engines, Tehran, Iran, 17-19 November, 2009.
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Ghobadian B., Nayebi M., Najafi G. and Saidi Neicharan M., A Semi-Empirical Model to Predict Diesel Engine Combustion Parameters. 6th International Conference of Internal Combustion Engines, Tehran, Iran, 17-19 November, 2009.
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Najafi, G. and Yusaf T F. Experimental investigation of using methanol- diesel blended fuels in diesel engines. Proceeding of the fourth international conference on thermal engineering: theory and applications. Abu Dhabi, UAE. January 12- 14, 2009.
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Kiani, Dehkiani, M., Ghobadian, B., Tavakoli Hashjin, T., Rahimi, H. and Najafi, G. The Effect of Ethanol – Gasoline Blends on Thermal Balance of an SI Engine. The Second Combustion Conference of Iran. Islamic Azad University, Mashhad. Mashhad, Iran.12-13 February, 2008. 
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Ghobadian, B., Najafi, G., Rahimi,H, Nikbakht, A.M and Kiani Dehkiani, M. Experimental and Theoretical Investigation of Combustion Process and Its Phases in a Diesel Engine. The Second Combustion Conference of Iran. Islamic Azad University, Mashhad. Mashhad, Iran,12-13 February, 2008.
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Najafi G., Ghobadian, B., Rahimi,H, Nikbakht, A.M.and Kiani Dehkiani, M. Simulation of Laminar Burning Velocities for Alternative Fuels in SI Engines. The Second Combustion Conference of Iran. Islamic Azad University, Mashhad. Mashhad, Iran, 12-13 February, 2008.
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Ghobadian, B., Rahimi, H., Khatamifar, M. and Najafi, G. (2007). Diesterol: An Environment – Friendly IC Engine Fuel. The 5th Conference on Internal Combustion Engines. November 20- 22, 2007. Tehran, Iran.
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Ghobadian, B., Karbalaireza, H., Najafi, G., Manteghi, A. and Nikbakht, A. M. (2007). Design and Installation of a Diesel Engine on Nissan Z24. The 5th Conference on Internal Combustion Engines. November 20- 22, 2007. Tehran, Iran.
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Ghobadian, B., Najafi, G., Rahimi, H. and Nikbakht, A. M. (2007). Analysis of CI Engine Performance Using Biodiesel-Diesel Blend with Artificial Neural Network. The 5th Conference on Internal Combustion Engines. November 20- 22, 2007. Tehran, Iran.
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Ghobadian, B., Rahimi, H. Khatamifar, M. and Najafi, G., (2007). Experimental Evaluation of Engine Performance using Diestrol. International Congress on Biodiesel: The Science and The Technologies. November. 5-7, 2007. Austria.
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Ghobadian, B., Najafi, G., Rahimi, H. and Khatamifar, M. (2007). Comprehensive Evaluation of Engine Performance with Diesel and Biodiesel Fuel Blends. The 3rd International Bioenergy Conference and Exhibition. Sep. 3-6, 2007. Finland.
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Ghobadian B., Najafi G.andRahimi H. Future of Renewable Energies in Iran, 6th National energy congress, Tehran, Iran. June 12, 13 2007.
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Kiani Deh Kiani, Ghobadian, B., Rahimi, H. and Najafi, G. (1387). Investigating the Pollutions in a spark ignition engine using Gasohol. National Conference of Fuel, Energy and the Environment. Persian date 7-9 Khordad 1387 (27-29 May 2008), Materials and Energy Research Institute, Karaj, Iran.
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Manteghi, A., Najafi, G., and Mokhtarifard, A.R. (2010). Persian date 3-4 Esfand, 1388 (22-23 Feb., 2010). Reduction of Fuel & Energy Consumption with Implementation of Cold Test Method. The 3rd Fuel & Combustion Conference, Amir Kabir Polytechnic University, Tehran, Iran.
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Saidi Nicharan, M.R., Ghobadian, B., Tavakoli T. and Najafi, G., (2010). Persian date 3-4 Esfand, 1388 (22-23 Feb., 2010). Experimental Investigation of CI Engine Performance Parameters Using Biodiesel Fuel. The 3rd Fuel & Combustion Conference, Amir Kabir Polytechnic University, Tehran, Iran.
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Najafi, G., Ghobadian, B., Tavakoli T. and Rahimi, H. (2010). Persian date 3-4 Esfand, 1388 (22-23 Feb., 2010). Investigation of Combustion Parameters, Performance & Emission Parameters and Simulation of Performance Cycle of SI Engine Using Bioethanol- Gasoline Blended Fuel. The 3rd Fuel & Combustion Conference, Amir Kabir Polytechnic University, Tehran, Iran.
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Najafi, G., Ghobadian, B. and Rahimi, H. Potential of bioethanol production from agricultural wastes in Iran. The 3rd National Conference on agricultural products losses. Persian date 30 Aban, 1386 (21 November, 2007), Tehran, Iran.
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Najafi, G., Ghobadian, B., and Rahimi, H. comparing the diesel engine pollutions using waste oil biodiesel and diesel fuel. The 3rd Student Conference on Agricultural Machinery Engineering and Mechanization. Persian date: 29- 30 Farvardin, 1386 (18, 19 April, 2007). Shiraz, Iran.
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