Runners training for a marathon can get a stress fracture if they. escalate their training too quickly. Stress fractures occur when too much weight or stress is put on a weakened bone. It's often the result of an imbalance in bone health caused by actions that outpace the body's natural bone rebuilding process. See Stress Fracture Risk Factors.
Definition of MDF (Medium-Density Fiberboard) Medium-density fiberboard (MDF). Definition. Medium-density fiberboard, or MDF, is a manufactured (engineered) wood product composed of wood fibers that are mixed with resin and wax and pressed into flat panels under high temperature and pressure. It is used much like plywood as a building material in residential and commercial construction.
For example, an IDF might be located on each floor of a multi-floor building routing the cabling down the walls to an MDF on the first floor. The MDF would contain cabling that would interconnect to the phone company or to other buildings.or example, an IDF might be located on each floor of a multi-floor building routing the cabling down the walls to an MDF on the first floor. The MDF would contain cabling that would interconnect to the phone company or to other buildings.