Development of hybrid solar-assisted heat pump dryer for drying paddy by Muhammad Yahya, Hendriwan Fahmi, Rosdanelli Hasibuan, Ahmad Fudholi

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Multiple linear regression analysis and lagrange polynomial on pyrolysis process of coconut shell waste producing solid biochar by Rosdanelli Hasibuan, Rita Sundari, Hans Martua Pardede, Vikram Alexander, Juliza Hidayati

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Application of Pineapple Skin Waste as a Source of Biosolvent for Use as Wax Inhibitor by Muhammad Khairul Afdhol, Tomi Erfando, Fiki Hidayat, Rosdanelli Hasibuan, M Yuda Hasibuan, Chalidah Pratiwi Siregar

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