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.
idf - Computer Definition. A distribution frame that serves as an intermediate point of inside cable and wire interconnection between the main distribution frame (MDF) and the terminal blocks or terminal outlets. See also MDF.
Medium-Density Fiberboard, also referred to as MDF, is widely used in the manufacture of furniture, cabinets, door parts, moldings, millwork and laminate flooring. MDF panels are manufactured in a variety of dimensions and densities, providing the opportunity to design the end product with the specific MDF needed.