Polymer science is, of course, driven by the desire to produce new materials for new applications. The success of materials suchas polyethylene, polypropylene, poly(vinyl chloride) and polystyrene is such that these materials are manufactured on a huge scaleand are indeed ubiquitous....

Kuwait’s structure of primary health care centers allows people simple and convenient access to medical and dental care regardless of the part of the country in which they live. Statistics estimate that approximately 36% of the population smokes cigarettes....