Science and Environmental Journals for Postgraduate (SENJOp) is an international journal published twice a year in June and December by Pascasarjana, Universitas Negeri Padang. The Science and Environmental Journals for Postgraduate (SENJOp) welcomes authoritative, original, ably illustrated, and well-written manuscripts on any topic of science and environmental issues in the world. The Journal publishes Articles, Technical Notes, Rapid Communications, Opinion Papers, Comments/Responses and Corrections. The submitted manuscript is first reviewed by an editor. It will be evaluated in the office whether it is suitable with our focus and scope or has a major methodological flaw. Every submitted manuscript which pass this step will be checked to identify any plagiarism before being reviewed by reviewers. This journal uses double-blind review, The manuscript will be sent to the reviewer anonymously. Reviewers' comment are also sent anonymously to corresponding author to take the necessary actions and responses. The decision of the revised manuscript will be then evaluated in editorial board meeting, based on the reviewer’s recommendation from among several possibilities: rejected, require major revision, need minor revision, or accepted. The Editor-in-Chief of Science and Environmental Journals for Postgraduate (SENJOp) has the right to decide which manuscripts submitted to the journal should be published. Science and Environmental Journals for Postgraduate (SENJOp) is biannually published in June and December by the Pascasarjana, Universitas Negeri Padang.