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  7. Manegdeg, Ferdinand G., “Academic Building Energy Conservation Opportunities”, Philippine Engineering Journal, XXXVI (2): 39-56, UPERDFI, Philippines, December 2015, ISSN: 0117 5564
  8. Ebrada, Leni C., De Luna, Mark Daniel G., Manegdeg, Ferdinand G., and Nurak, Grisdanurak, “Brewery Heat Exchanger Networks Design and Optimization Based on Pinch Analysis at a Single ΔTmin”, Philippine Engineering Journal, XXXVI (1): 54-75, UPERDFI, Philippines, June 2015, ISSN: 0117 5564
  9. Ebora, Jan Ralph M., Manegdeg, Ferdinand G., De Luna, Mark Daniel G., and Nurak, Grisdanurak, “Hg removal from mercury-contaminated gas by Ag-impregnated activated alumina adsorbents”, Philippine Engineering Journal, XXXV (2): 1-8, UPERDFI, Philippines, December 2014, ISSN: 0117 5564
  10. Buenaventura, Ramon M., Manegdeg, Ferdinand G., and Cruz, Ibarra E., “Design of an Effective Producer Gas Cleaning Method for a Downdraft Gasifier-Engine-Generator System”, Philippine Engineering Journal, XXXIV (2): 33-50, UPERDFI, Philippines, December 2013, ISSN: 0117 5564
  11. Manegdeg, Ferdinand G., Papa, Louernie D., Pamintuan, Gabriel, Jr. P., Rañeses, Nestor O., Alcayde, Adrian D., and Ballesteros, Florencio, Jr. C., “Quezon City Solid Waste Controlled Disposal Facility Waste Analysis and Characterization Study”, Philippine Engineering Journal, XXXII (2): 31-50, UPERDFI, Philippines, December 2011, ISSN: 0117 5564
  12. Kim, Sung-Joon, Manegdeg, Ferdinand G., Jung, Byung-Cheol, and Park, Min-Ju, “The Eulerian Analysis of Gas-particle Flow in Acyclone and the Collection Efficiency of Particle”, Journal of Sanhakyeon Regional Consortium Center, No. 3: 24-31, Kangwon National University, Korea, 2000
  13. Kim, Sung-Joon, Manegdeg, Ferdinand G., Min, In-Hong, Byun, Joon-Suk, and Park, Min-Ju, “The Change of Outlet Temperature in an Incinerator with the Ratio of Secondary Air”, Journal of Sanhakyeon Regional Consortium Center, No. 3: 32-39, Kangwon National University, Korea, 2000
  14. Manegdeg, Ferdinand G., “Emulsified Fuel Performance on Compression Ignition Engine”, Philippine Engineering Journal, XX (2): 18-31, UPERDFI, Philippines, December 1999
  15. Manegdeg, Ferdinand G., “Soya Oil as Alternative Fuel for Diesel Engine”, Philippine Engineering Journal, XIX (2): 63-84, UPERDFI, Philippines, December 1998
  16. Manegdeg, Ferdinand G., “Boiler Performance of Emulsified Fuel”, Philippine Engineering Journal, XIX (1): 67-81, UPERDFI, Philippines, June 1998