Epidemiology is concerned with the incidence of disease in populations and does not address the question of the cause of an individual's disease.This question, sometimes referred to as specific causation, is beyond the domain of the science of epidemiology.he subdiscipline of forensic epidemiology is directed at the investigation of specific causation of disease or injury in individuals or groups of individuals in instances in which causation is disputed or is unclear, for presentation in legal settings.
Major system characteristics. Tacan stands for Tactical Air Navigation and is a system which, working in the u.h.f. band, between 962 and 1,214 Mc/s, gives to a pilot continuous information as to his range and bearing from a beacon.
Total artificial hearts (TAH) are a mechanical substitute for your entire heart. They are put into your body after your heart has been removed. How does an artificial heart work? Blood enters an artificial heart from the left or right atrium (blood receiving chamber). It is then pumped into the aorta (artery to your body) or pulmonary artery (artery to your lungs), depending on which side of your heart is being supported. An artificial heart is powered by either compressed air or electricity.