Decreasing the ash coal and sulfur contents of sawahlunto subbituminous coal by using "minyak jelantah" von Prabowo, H, Prengki, I

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Analysis of Collapse Load and Open Hole Evaluation Based on Rock Mass Ratting (RMR) Method in Underground Mining von Heriyadi, B, Prengki, I, Prabowo, H

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Optimization of Digging and Loading Equipment and Hauling for Overburden Production with Quality Capacity Methods and Queing Methods in East Pit, August 2017 Period Pt. Artamulia T... von Gusman, M, Asri, Y, Prengki, I

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Analysis System Occupational Health And Safety in coal Underground von Prabowo, H, Prengki, I, Amran, A

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Study of pillar stability in underground coal mining von Prengki, Ilep, Dwinagara, Barlian, Koesnaryo, S., Saptono, Singgih, Winarno, Eddy

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Synthesis and characterization of Ni0.5Zn0.4Cu0.1Fe2O4 as a magnetic feeder for electromagnetic transmitter application von Shafie, Afza, Pransisco, Prengki, Guan, Beh Hoe, Annur, Robithoh

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Effect of calcination temperature on microstructure and magnetic properties of Ni{sub 0.5}Zn{sub 0.25}Cu{sub 0.25} Fe{sub 2}O{sub 4} nanoparticles synthesized by sol-gel method von Pransisco, Prengki, Shafie, Afza, Guan, Beh Hoe

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Investigation of Nanostructure and Magnetic Properties of Nanocrystalline NiZnCu Ferrites Synthesized by Sol-Gel Method von Shafie, Afza, Pransisco, Prengki, Guan, Beh Hoe

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Effect of calcination temperature on microstructure and magnetic properties of Ni0.5Zn0.25Cu0.25 Fe2O4 nanoparticles synthesized by sol-gel method von Prengki, Pransisco, Afza, Shafie, Guan Beh Hoe

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Nanostructure investigation of magnetic nanomaterial Ni{sub 0.5}Zn{sub 0.3}Cu{sub 0.2}Fe{sub 2}O{sub 4} synthesized by sol-gel method von Pransisco, Prengki, Badan Lingkungan Hidup Derah Kabupaten Empat Lawang South of Sumatera, Shafie, Afza, Guan, Beh Hoe

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