Manufacturers have succeeded in selling this technology by emphasizing its energy efficiency and other benefits. The installed cost of VRF systems is about $18 per square foot of conditioned space, while a conventional air-source heat pump system costs about $12 to $15 per square foot.anufacturers have succeeded in selling this technology by emphasizing its energy efficiency and other benefits. The installed cost of VRF systems is about $18 per square foot of conditioned space, while a conventional air-source heat pump system costs about $12 to $15 per square foot.
Essential Thrombocythemia. Essential thrombocythemia (ET) is a type of blood cancer known as a myeloproliferative neoplasm. It involves the abnormal development and function of bone marrow cells that produce blood cells, and leads to the overproduction of blood cells known as platelets.
Polycythemia is a blood condition in which the bone marrow makes excess blood cells, primarily red blood cells, but also platelets and white blood cells.hile polycythemia is rare, generally treatable, and usually mild, serious complications such as heart attack or stroke can occur if left untreated. Seek immediate medical care (call 911) for any sudden symptoms of heart attack or stroke, such as sudden numbness, weakness, confusion, vision problems, or chest pain.