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The ever growing nature of transportation and its increasing demand on the use of non-renewable energy resource is a burning issue throughout the world. Many nations (e.g. China) are introducing policy measures to control the consumption of energy in transportation sector. Also, the environmental impacts of the growing vehicle fleet and their increasing fuel demand are key issues in environmental planning. Bangladesh government also introduced CNG for vehicles for achieving some environmental Benefits. Yes some benefits have been achieved. But the country is suffering from acute gas crisis....

Mitral Annular Calcification (MAC) is degenerative, fibrous calcification of the mitral valve support ring.It develops from progressive calcium deposition along and beneath the mitral valve annulus.It was shown to be an independent predictor of cardiovascular mortality and morbidity. MAC is a marker of increased cardiovascular risk .This increased risk occurs in a graded fashion by MAC severity.MAC is associated with several cardiovascular disorders and events, including CAD, carotid and aortic atherosclerosis, stroke, heart failure, and atrial fibrillation. MAC has also been shown to be...