Eco-friendly utilization of chitosan from shrimp shells for used lubricating oil cleaning by Muhammadin Hamid, Indri Dayana, Dewi Sholeha, Muhammad Fadlan Siregar, Indra Roza, Junaidi, Martha Rianna, Hadi Wijoyo

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Porous hard carbon derived from coconut biomass waste as electrode material for supercapacitor by Muhammadin Hamid, Indri Dayana, Habib Satria, Dadan Ramdan, Junaidi, Muhammad Fadlan Siregar, Dewi Sholeha, Juliaster Marbun, Hadi Wijoyo

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Assessment of stream quality and health risks in Indonesian river systems: A social analysis and water quality index approach by Lutfi Chabib, Agus Nurbillah, Aulia Anggriani Lubis, Ayu Wahyuni Batubara, Eva Purwanti, Nazwa Armi, Hadi Wijoyo, Muhammadin Hamid, Nursal

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Study of Crystal Structure, Lattice Strain, and Elemental Content of Natural Iron Sand Nanoparticles Synthesized by the Coprecipitation Method by Tulus Na Duma, Syahrul Humaidi, Erna Frida, Mohd. Mustafa Awang Kechik, Muhammadin Hamid, Martha Rianna, Novita, Rahmadhani Banurea, Norazimah Mohd Yusof, Nur Jannah Azman

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Optimization of g-C3N4 nanoparticles on structural, morphological, and optical properties as organic pollutants adsorbent in glycerin by Lutfi Chabib, Nursal, Mazidatulakmam Miskam, Noor Haida Mohd Kaus, Muhammad Hakimin Shafie, Muhammadin Hamid, Indah Revita Saragi, Isnaeni Isnaeni, Dinda Amilia, Ivi Briliansi Dalimunthe, Hadi Wijoyo

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