Bodies not in contact in a vacuum have only the radiation mechanism for heat energy transfer. An obvious example is the Earth in space, receiving heat radiation from the Sun which is partly absorbed and partly reflected, and emitting heat radiation to space.
Aspartate Aminotransferase (AST). Guide. An aspartate aminotransferase (AST) test measures the amount of this enzyme in the blood. AST is normally found in red blood cells, liver, heart, muscle tissue, pancreas, and kidneys. AST formerly was called serum glutamic oxaloacetic transaminase (SGOT).
Aspartate transaminase (AST) is an enzyme produced in the liver. It plays an important role in amino acid metabolism. It is normally found in the liver, heart, muscles, brain, kidneys, and red blood cells. The level of AST in the blood is often tested to reveal the presence of liver disease or of damage to the liver.hen elevated AST indicates damage to the liver, this damage can come from a variety of different causes, both in the sense of indicating various liver diseases and also in the sense of the diseases being due to various causes.