I can recall that Loma Linda University is sometimes abbreviated as Loma, but there are other institutions as well. Alternatively, LOMA could be part of an organization. Maybe it's a course number? Like a course titled "LOMA 281" offered by LOMA Learning Institute? I've heard of LOMA (Life Office Management Association) providing training for insurance and financial professionals. So, LOMA 281 might be a course or training module related to insurance or finance.