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.
(Intermediate Distribution Frame) A wiring rack located between the MDF (main distribution frame) and the intended end user devices (telephones, routers, PCs, etc.). Cables run from the outside world to the MDF and then to the IDFs. See MDF and wiring rack.
What is a MDF file? Files given the .mdf extension contain a disc image of the information that has been saved on a CD or DVD. MDF files are similar to ISO files, but they are saved in a different format. In order for the DVD or CD data to be played back properly, the MDF file must be saved with an associated MDS file.