”Discharge from contaminating particles in GIS under impulse voltage”, Proc. Conference on Electrical Insulation and Dielectric Phenomena, PP. 648-653. ”on-site testing for mobile particles in GIS under impulse voltages”, Proc. Conference of IEEE Industry Application Society, Volume II, Weston Galleria, Houston, Texas, PP. 1487-1491. “Electrode surface roughness initiated breakdown in compressed SF GIS”, Al-Azhar Engineering Third International Conference (AEIC’93), Volume 5, Cairo, Egypt, PP. 479-490, 18-21 Dec. ” Experimental study of particle initiated breakdown in a non-uniform fields”, Al-Azhar Engineering Third International Conference (AEIC’93), Volume 5, Cairo, Egypt, PP. 491-501, 18-21 Dec. ”Lifting and breakdown characteristics of contaminated particles in gaseous dielectric, experimental and analytical studies”, Third Middle East Power System Conference (MEPCON-94), PP. 73-78, 3-6 January. ”Effect of fixed particle protrusions on breakdown voltage for compressed gases”, First Engineering Conference-Mansoura University, Mansoura, Egypt, PP. 1-11, 28-30 March . ”Movement of filamentary conducting particles under VFT/AC mixed voltages in GIS”, First Engineering Conference-Mansoura University, Mansoura, Egypt, PP. 12-25, 28-30 March . ”Influence of particle contamination on the breakdown voltage of non-uniform field gaps under AC voltages”, 9 International Symposium on High Voltage Engineering, Subject 2, Graz, Austria, PP. 2260-1 to 2260-4,August 28 - Sept. 1 ”The breakdown voltages for compressed gas-insulated systems with contamination considering the space charge effect”, Conference Record of The IEEE International Symposium on Electrical Insulation, Volume 1, Montreal, Canada, PP. 87-90, June 16-19. ”Electrode roughness effects on the breakdown of air-insulated apparatus”, IEEE Transaction on Dielectrics and Electrical Insulation, Vol.5 No.4, pp. 612 - 617, August. ”On the particle contaminated gas-insulated systems”, 33rd Universities Power Engineering Conference (UPEC’98), Napier University, Edinburgh, U.K., PP. 436-439, 8-10 September. ”On the detection and control of metallic particle contamination in compressed GIS equipment”, Annual Report Conference on Electrical Insulation and Dielectric Phenomena (CEIDP’98), Volume II, Atlanta, Georgia, U.S.A., PP. 476-480, October 25-28. " Probabilistic failure in compressed SF6 insulation due to surface roughness”, Sixth Middle - East Power Systems Conference (MEPCON’98), Volume 2, Mansoura, Egypt , PP. 385-389, December 15-17. "Influence of conducting particles on the breakdown voltages of SF6 - N2 mixture”, Eleventh International Symposium on High Voltage Engineering, Volume 3, Topic D, Paper No. 3.187 P3, London, U.K., PP. 187-192, August. ” Effect of water content and stirring time on the dielectric strength of transformer oil”, Journal of Engineering and Applied Science , Volume 46-Number 1, Faculty of Engineering, Cairo University, Egypt, PP. 129-142, February . ” Effect of gas mixtures on breakdown characteristics of gas insulated systems”, Conference of Nordic Insulation Symposium, Copenhagen, Denmark, PP> 341-347, June. ” Identification and evaluation of local base lubricating oils as insulating medium”, Conference of Nordic Insulation Symposium, Copenhagen, Denmark, PP. 313-323,June. ” Particle-initiated corona and breakdown under dc/ac mixed voltages”, Conference of Electrical Insulation and Dielectric Phenomena, Austin, Texas, USA, PP. 371-374, October 17-21. ” Particle-initiated breakdown with spacer involvement in compressed gas and its mixtures”, Conference of Electrical Insulation and Dielectric Phenomena, Austin, Texas, USA, PP. 354-358, October 17-21. ’’ Sensitivity of the dielectric strength for SF6-gas mixtures to particle contamination”, Seventh International Middle-East Power Systems Conference, MEPCON’2000, Ain Shams University, Cairo-Egypt, PP. 522-526, March. ” Optimum SF6-N2, SF6-Air, SF6-CO2 based on particle contamination”, Conference Record of the 2000 IEEE International Symposium on Electrical Insulation, Anaheim, California USA, PP. 292-295, April 2-5. ” Insulation Integrity of GIS/GITL Systems and Management of Particle Contamination”, IEEE Electrical Insulation Magazine, Volume 16, Number 5, PP. 25-37, September/October. ” Electrical discharges and breakdown in compressed sulphur-hexafluoride gas”, 8th annual meeting IEEE Technical Exchange Meeting, KFUPM, Dhahran, K.S.A., PP.1-10, April 17-18. ” Diagnosis of particle contamination in compressed gas-insulated switchgear”, 12th International Symposium on High Voltage Engineering, ISH 2001, Bangalore, India, PP. 417-420, 20-24 August. “ Behaviour for contaminating particle in SF6-gas mixtures with space charge effect”, 8th International Middle-East Power Systems Conference, MEPCON’2001, Helwan University, Cairo, Egypt, PP. 1057-1062, December 29-31. “ Dissolved gas analysis as diagnostic tool for evaluating the condition of the transformer”, 13th International Symposium on High Voltage Engineering (ISH’03), Technical University of Delft, Delft, Netherlands, August 25-29. “Evaluating Transformer Condition Using DGA Oil Analysis”, Conference on Electrical Insulation and Dielectric Phenomena 2003, New Mexico, USA, October 19 - 22. “ Performance of particles and water contamination on the dielectric strength of transformer oils”, First Baha Technical Meeting (BTM’2004), Baha, KSA, pp. 421-433. “ Detection of particle configuration by using discharge time zone technique”, 10th International Middle-East Power Systems Conference, MEPCON’2005, Suez Canal University, Port Sauid, Egypt, December 13-15. “ On line monitoring of power transformers using DGA oil analysis”, 10th International Middle-East Power Systems Conference, MEPCON’2005, Suez Canal University, Port Sauid, Egypt, December 13-15. “Particle contamination factor and breakdown voltages for SF¬¬¬6 – gas mixtures", Sixth Saudi Technical Conference and Exhibition (STCEX2006), Riyadh, Saudi Arabia, PP. 160-165, 18-22 December . Detection of Faults in Power Transformers Using an Expertise Method Depending on DGA Practical and Theoretical Investigation of Current Carrying Capacity (Ampacity) of Underground Cables Effect of Multi-Contaminating Particles on Breakdown Voltage of Mixture Gases inside GIS Onset voltage of a particle-initiated negative corona in a co-axial cylindrical configuration Particle Intiated Breakdown Inside Gas Insulated Switchgear for Various Gases Mixtures Dissolved Gas Analysis as a Diagnostic Tools for Early Detection of Transformer Faults “ Particle contamination factor and breakdown voltages for SF6-gas mixtures”, First Saudi Technical Conference and Exhibition (STCEX2000), Riyadh, Saudi Arabia, PP. 160-165, 18-22 November 2000. " Analysis of electric field inside HV substations using charge simulation method in three dimensional", 2010 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), October 2010. " Three dimensional electric field analysis and measurement inside high voltage substations", International journal of Electrical and Power Engineering, 5 (3) : 150 -156,ISSN 1990 -7958, Medwell Journals,2011. “Particle – initiated breakdown in gas insulated co-axial configuration”, 2011 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), 978-1-4577-0986-9l11l$26 ©2011 IEEE, PP. 722 – 727, October 2011. “ Multi-Particle initiated breakdown of gas mixtures inside compressed gas devices”, 2012 IEEE Conference of Electrical Insulation and Dielectric Phenomena, CEIDP 2012, Montreal, Quebec, Canda, PP. 353-356, October 14-17, 2012. “onset voltage of Particle–initiated negative corona in a co-axial cylindrical configuration”, MEPCON’2012, Alexandria University, Egypt, December 23-25,2012, Paper ID 205. “Effect of functionally graded material of disc spacer with presence of multi-contaminating particles on electric field inside gas insulted bus duct”, International Journal of Electric and Computer Engineering (IJECE),Vol.3, No.6,pp. 831 – 848, December 2013. “Identification of Contaminating Particle Geometry in a Co-axial Configuration Using Trichel Pulse Characteristics” CEIDP 2013, Shenzhen, China, 20-23 October 2013. “Assessment of Electric Field Distribution Inside 500/220 kV Open Distribution Substations during Working Conditions”, TELKOMNIKA Indonesian Journal of Electrical Engineering, Vol. 12, No. 9, September 2014. "Effect of Functionally Graded Material of Spacer with Contaminating Particle on Breakdown Voltage inside Gas Insulated Bus Duct", International Journal of Scientific and Engineering Research (IJSER), Volume 5, Issue1, January 2014. "Effect of Coating of Earthed Enclosure and Multi-Contaminating Particles on Breakdown Voltage inside Gas Insulated Bus Duct" International Journal of Electrical and Computer Engineering (IJECE), Vol. 4, No. 4, pp. 471-485, August 2014. “Experimental and Theoretical Study of Breakdown Voltage Initiated by Particle Contamination in GIS”, International Journal of Scientific Research Engineering & Technology (IJSRET), ISN 278 – 0882, Vol. 3, Issue 2, May 2014. "Assessment of Human Exposure to Electric Fields inside High Voltage Substations During Working Conditions", 16th International Middle-East Power Systems Conference, MEPCON’2014, Ain-Shams University, Egypt, December 23-25,2014, Paper ID 175. Performance of Coated GIS Conductors Under Impulse Voltages, Proc. Conference on Electrical Insulation and dielectric Phenomena, Ottow, Canada, PP. 312 - 317, 1988 ESTIMATION OF CAPACITOR BANK SWITCHING OVERVOLTAGES USING ARTIFICIAL NEURAL NETWORK Design, Construction and Characterization of AC Atmospheric Pressure Air Nonthermal Plasma Jet Electrical Parameters Investigation and Zero Flow Rate Effect of Nitrogen Atmospheric Nonthermal Plasma Jet Electric Field Distribution around Contaminating Wire Particles Inside Gas Insulated Bus Duct Conventional Ratio and Artificial Intelligence (AI) Diagnostic methods for DGA in Electrical Transformers “ Detection of particle configuration by using discharge time zone technique”, Optimal grid size for precipitators using finite difference method based on full multi-grid method Influence of Barium Titanate Nanoparticles Dispersion into Transformer Oil on its Dielectric Strength and Heat Transferability Multiple Nanoparticles for Enhancing Breakdown Strength and Heat Transfer Coefficient of Oil Nanofluids Electrical Parameters Investigation and Zero Flow Rate Effect of Nitrogen Atmospheric Nonthermal Plasma Jet Development of a low-cost atmospheric non-thermal plasma jet and its characteristics in air and nitrogen Insulating Material Erosion in Atmospheric NonThermal Plasma Jet Device A Modified Dissolved Gas Analysis Technique as a Diagnostic Tool for Faults in Power Transformers Plasma Current Sheath Dynamics and Energy Dissipation in a Low-Energy Plasma Focus Device Estimation of Carbon Nanotube Sensors Performance using Linear, Fuzzy and Neural Regression Models Influence of Wire and Cone Particle Contamination on Maximum Electric Field for Rod-Plane Gaps Multiple nanoparticles for improvement of thermal and dielectric properties of oil nanofluids. Conventional Ratio and Artificial Intelligence (AI) Diagnostic methods for DGA in Electrical Transformers Particle-Initiated Breakdown with Spacer Involvement in Compressed Gas and its Mixtures EXPERIMENTAL AND THEORETICAL STUDY OF BREAKDOWN VOLTAGE INITIATED BY PARTICLE CONTAMINATION IN GIS SYSTEMS WITH CONTAMINATION CONSIDERING THE SPACE CHARGE EFFECT Particle Intiated Breakdown Inside Gas Insulated Switchgear for Various Gases Mixtures Effect of Soil Treatment on the Design of Ground Grid System Of Transformer Substation Effect of Soil Treatment on the Design of Ground Grid System Of Transformer Substation Magnetic field induction and magnetic force distribution profiles in plasma focus discharge device Optimization Ensemble Weights Model for Wind Forecasting System Feature Selection and Classification of Transformer Faults Basedon Novel Meta-Heuristic Algorithm Al-Biruni Earth Radius Optimization Based Algorithm for Improving Prediction of Hybrid Solar Desalination System