BOSTON — The University of Massachusetts Board of Trustees has unanimously approved Jacqueline Moloney as the new chancellor for the Lowell campus.Moloney, who has been UMass-Lowell's executive vice chancellor, succeeds Marty Meehan, now UMass System president.Moloney, a UMass-Lowell graduate, is the first woman to lead the university and its predecessor institutions in their 121-year history.