I would like to publish my graduate (M.S.) research, which is wildlife/conservation-related, and which I conducted at a U.S. university. It's been a few years since I finished graduate school. I now work for an NGO that focuses on dogs and cats, so it wouldn't make much sense to a reader if I published the wildlife paper with my current work affiliation. Is it acceptable to publish with my former university affiliation? Do I need to get formal permission from the university to do so? Thank you!