List of Articles Rice husk Open Access Article Abstract Page Full-Text 1 - Synthesis of Unsymmetrical Ethers Catalysed by Polyvinyl sulfuric acid & PVSA / Nano RH SiO2 as a Novel Solid Acid Nanocomposite roya moeinzadeh Ali Kiasat Hadi Asareh 10.22034/jna.2017.536601. Open Access Article Abstract Page Full-Text 2 - Synthesis of Pyranopyrazole Compounds Using Heterogeneous Base Catalyst Based on 1,3,5-Triazine-2,4,6-Triamine Modified Nano Rice Husk Silica Jamal Davarpanah Reza Khoram 10.22034/jna.2017.01.003 Open Access Article Abstract Page Full-Text 3 - Synthesis of Unsymmetrical Ethers Catalysed by Polyvinyl Sulfuric Acid & PVSA / Nano RH SiO2 as a Novel Solid Acid Nanocomposite Roya Moeinzadeh Hadi Asareh Ali Reza Kiasat 10.22034/jna.2017.539361