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Calorimetry is the measurement of heat. Animal and human calorimetry can be used to estimate the energy costs of living. Calorimetry is used to estimate the nutritional needs of man and livestock and to evaluate foods. It is also used in research into fundamental nutritional and physiological life-processes and to evaluate stresses imposed by abnormal or severe environments. The heat can be measured by direct calorimetry (by physical methods) or inferred by indirect calorimetry (from measuring by-products of metabolism). This book details the techniques that can be used to study or practise accurate calorimetry. There are chapters on: indirect and direct calorimeters, instrumentation, calibrations and standards, and some complete open-circuit systems. |