CERiMRE https://jurnal.unej.ac.id/index.php/CERiMRE Physics Department, Faculty of Mathematics and Natural Sciences The University of Jember VOLUME 3, ISSUE 1 MAY 2020 TABLE OF CONTENTS Volume 3, Issue 1 May – 2020 Page Cover i Table of Contents ii Editorial Board iii Protein Adsorption on Modified Bacterial Cellulose Bambang Piluharto, Fitri Sulistyowati, Dwi Indarti, Busroni and D. Setiawan Purwo Handoko 1-9 Study of the Ferromagnetic Magnetite Resonance (Fe3O4) Forms of Thin Films Using Micromagnetic Simulation Syefira Salsabila, Lutfi Rohman and Endhah Purwandari 10-18 Design Study of Gas Cooled Fast Reactor (GFR) with Uranium Plutonium Carbide (UC-PuC) as Fuel with Addition Protactinium (Pa-231) Alvi Nur Sabrina, Arindi Kumala Sari, Laela Nur Janah and M. Rizqi Maulana 19-26 Study of J-V Characteristics of Microcrystalline Silicon Solar Cell on The Structure of P-I-N Homojunction Yuningtyas Nely Kusuma Dewi, Endhah Purwandari, Khoirul Anwar and Misto 27-37 Study of Dielectric and Adsorption Properties of Activated Carbon Prepared from Water Hyacinth using KOH as an Activating Agent Mochammad Ghiffari, Wenny Maulina and Agung Tjahjo Nugroho 38-46