Heat distribution unit. The Heat Distribution Unit (HDU), also known as a Heat Interface Unit (HIU), provides domestic hot water (DHW) and space heating to properties that are serviced from district heating or centralised boiler plants.
Called hypoglycemia, this deficiency of glucose in the blood is considered critical at, or below, 40 milligrams of glucose per deciliter of blood, or 40 mg/dL. However, this figure must be adjusted individually, as the exact level at which an a person develops symptoms varies.
Blood glucose levels are closely regulated and maintained within a narrow range. Learn how the pancreatic hormones, insulin and glucagon, maintain normal blood sugar levels and how other nutrients can be converted to blood glucose in this lesson.esson Summary. Let's review. Glucose is a simple sugar that is used as energy by your body and brain. Your body works hard to regulate the amount of sugar in your bloodstream and maintain the normal blood glucose range between 70 mg/dl and 110 mg/dl.