The death of Black Hills State student Nicholas Bazemore, who was found dead in his campus dorm room on Sunday, has been ruled a suicide.   A release Thursday from the Spearfish Police Department says, "Results from the post mortem examination conducted by a forensic pathologist in this investigation concluded that the cause of death is from injuries that are consistent with being self-inflicted."   The 18-year old from Gillette, Wyoming was found dead in his room in Wenona Cook Hall Sunday night.