STUDY AWAL EKSTRAKSI MINYAK ESENSIAL BUNGA KAMBOJA PUTIH (Plumeria obtusa) SEGAR: PERBANDINGAN PENGARUH METODE EKSTRAKSI TERHADAP KOMPOSISI EKSTRAK by Arabella Febiola Armani, Ratna Frida Susanti

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EKSTRAKSI MINYAK ESENSIAL BUNGA KAMBOJA PUTIH (Plumeria obtusa) DENGAN CO2 SUPERKRITIK: PENGARUH TEMPERATUR DAN TEKANAN by Arabella Febiola Armani, Ratna Frida Susanti

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Rambutan peel derived porous carbons for lithium sulfur battery by Arenst Andreas Arie, Hans Kristianto, Ratna Frida Susanti, Joong Kee Lee

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Synthesis and Electrochemical Properties of SnO2 Composited Activated Carbon from Coffee Ground Waste for Supercapacitor Applications by Agung Nugroho, Muhammad Reza Wirayudha Pratama, Hans Kristianto, Haryo Satriya Oktaviano, Arenst Andreas Arie, Ratna Frida Susanti

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The Effect of Time, Frother and Collector Concentration on the Purification of Ruwai Galena Ore via Agitated Froth Flotation: A Comparative Study with Column Flotation by Kevin Cleary Wanta, Alexander William Prijadi, Himawan Tri Bayu Murti Petrus, Arifudin Idrus, Iga Trisnawati, Agus Saptoro, Ratna Frida Susanti

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Utilization of the spent catalyst as a raw material for rechargeable battery production: The effect of leaching time, type, and concentration of organic acids by Tabita Kristina Mora Ayu Panggabean, Ratna Frida Susanti, Widi Astuti, Himawan Tri Bayu Murti Petrus, Anastasia Prima Kristijarti, Kevin Cleary Wanta

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Study of Nickel Extraction Process from Spent Catalysts with Hydrochloric Acid Solution: Effect of Temperature and Kinetics Study by Ivanna Crecentia Narulita Simanungkalit, Elsha Pamida Bahri, Ratna Frida Susanti, Gelar Panji Gemilar, Widi Astuti, Himawan Tri Bayu Murti Petrus, Kevin Cleary Wanta

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