List of Articles Ultrafiltration Open Access Article Abstract Page Full-Text 1 - Comparison between two conventional pretreatment methods and ultrafilter membrane of sea water desalination by reverse osmosis method Vida Pesarakloo Amir hessam Hassani Vali Ali Pour Amir Hossein Javid Open Access Article Abstract Page Full-Text 2 - Detection of SARS-CoV-2 in hospital wastewater during the Covid-19 pandemic الهه مبارک قمصری پریسا محمدی Mahtab Baghban