Pulmonary arterial hypertension is a rare but severe disease with an estimated five-year survival rate of only 57% after diagnosis, according to the Registry to Evaluate Early And Long-term PAH disease management (REVEAL), which registers data from patients in the United States.
Concentration of elements in the ocean relative to the total concentration in the bulk silicate Earth (BSE). Of all the elements, only Cl and Br have a significant fraction in the ocean (see inset), indicating the extreme hydrophilic character for the heavier halogens.
202 249 6706 chlorine is a naturally occurring chemical element one of the basic building blocks of matter scattered throughout the rocks of earth s continents and concentrated in its salty oceans chlorine is an essential nutrient for plants and animals chlorine chemistry provides clean drinking water to millions around the globe clean drinking water made possible with chlorine disinfectants is a monumental triumph over the scourges of waterborne disease and chlorine chemistry is also critical to manufacturing thousands of products that define life in the 21st century from silicon based semiconductors to sustainable pvc building materials