a creatinine urine test measures the amount of creatinine in your urine and can help your doctor evaluate how well your kidneys filter waste this is useful in diagnosing or ruling out kidney diseases and some other conditions
Therefore, to change the energy of a system, energy must be transferred to or from the system. Heat and work are the only two mechanisms by which energy can be transferred to or from a control mass. Heat is the transfer of energy caused by the temperature difference.emperature is used as a measure of the internal energy or enthalpy, that is the level of elementary motion giving rise to heat transfer. Heat can only be transferred between objects, or areas within an object, with different temperatures (as given by the zeroth law of thermodynamics).
The transfer is characterized by the quantity of energy transferred, which can be specified in energy units such as the joule (J), in combination with the direction of the transfer, which can be specified as in (to) or out of (from) one system or the other.ther constructions include energy transferred as heat, energy transferred by heat, or energy transferred by a process called heating rather than heat. Terminology for mass transfer is less problematic because it can be used in the same ways as the word transfer itself.