Four engineering and computer science students have conceived a startup company with the goal of circulating life-saving vending machines that can dispense over-the-counter medicine 24 hours a day to anyone with a pressing ailment, such as fever, diarrhea, indigestion, or aches and pains. The team called TransPharm will be competing in at least two entrepreneurship competitions in the coming weeks, and has already been selected as a finalist in one.