Corrosionpedia explains Denatured Alcohol. When ethanol is added some chemical substances, the product is unfit for human consumption. The type of additive will determine whether the denatured alcohol will be used as fuel, a cosmetic ingredient or as a cleaner. Common denaturants used singularly or combined include methanol, gasoline, kerosene, chloroform, gasoline, naphthalene methyl alcohol benzene, butyl alcohol and pyridine.
Making the world better, one answer at a time. Without adequate blood supply the human leg can only survive six hours without blood flow. If blood flow is not re established within those six hours amputation may become necessary.
By placing a radioactivity counter over the head, one can measure the amount of blood flow into the brain. (See How Nuclear Medicine Works .) The cerebral blood flow study takes 20 to 30 minutes to perform. If there is no blood flow to the brain as demonstrated by this study, the brain is dead.A negative cerebral flow study is indisputable evidence of a dead brain. Normal cerebral blood flow study showing cranial space filled with blood. Cerebral blood flow study showing no blood entering the brain.Another confirmatory test is chemical: The patient can be given 1 mg of atropine IV.In the patient with an intact brain, atropine will dramatically increase the patient's heart rate. In a brain-dead patient, atropine will not influence heart rate.y placing a radioactivity counter over the head, one can measure the amount of blood flow into the brain. (See How Nuclear Medicine Works .) The cerebral blood flow study takes 20 to 30 minutes to perform. If there is no blood flow to the brain as demonstrated by this study, the brain is dead.