By PAUL BABIN Partners Healthcare and Channel 7 NBC/CW56 kicked off their first Health & Fitness Expo at the Hynes Convention Center yesterday.

** Retail stores and supermarkets: open ** Liquor stores and bars: open ** Banks: vary ** State and municipal offices: closed ** Schools: closed ** Libraries: closed ** Mail: regular delivery ** MBTA trains and buses: Copley Station closed all day.

Aug. 26--Ben Davenport of Houston inspects a new IBM z9 system, a top-of-the-line mainframe computer system, at this week's SHARE Inc. computer convention at the Hynes Convention Center in Boston.