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.
According to the National Heart Lung and Blood Institute, a high platelet count can indicate a number of different conditions, including cancer, anemia or a reaction to medications. The National Heart Lung and Blood Institute (NHLBI) explains that there are two different types of thrombocythemia, or a high volume of platelets in the blood. Primary thrombocythemia is caused by faulty bone marrow stem cells, while secondary thrombocythemia is caused by some other underlying physical condition.