calorimetry


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calorimetry

 [kal″o-rim´ĕ-tre]
measurement of the heat eliminated or stored in any system.
direct calorimetry measurement of the amount of heat produced by a subject enclosed within a small chamber.
indirect calorimetry measurement of the amount of heat produced by a subject by determination of the amount of oxygen consumed and the amount of carbon dioxide eliminated.

cal·o·rim·e·try

(kal'ō-rim'ĕ-trē),
Measurement of the amount of heat given off or absorbed by a reaction or group of reactions (as by an organism).

calorimetry

[kal′ərim′ətrē]
Etymology: L, calor, warmth; Gk, metron, measure
the measurement of the amounts of heat radiated and the amounts of heat absorbed. Compare direct calorimetry, indirect calorimetry. calorimetric, adj.

cal·o·rim·e·try

(kal'ŏr-im'ĕ-trē)
Measurement of the amount of heat given off by a reaction or group of reactions (as by an organism).

calorimetry

Measurement of the energy value of foodstuffs or the energy expenditure of a person. Food is burnt in a special chamber called a BOMB CALORIMETER and the heat rise measured. Human energy expenditure can be measured indirectly by assessing the amount of oxygen consumed.

calorimetry

technique used for the measurement of energy expenditure. direct calorimetry evaluates energy expended over a given time by measuring heat emitted from the body. Heat loss is detected by using room-sized chambers. indirect calorimetry when foods are oxidized in the body, oxygen is used and carbon dioxide is produced in proportion to the heat generated. Energy expended over a given time can be estimated from oxygen consumption alone. For greater accuracy and information about the relative amounts of nutrients (carbohydrate, fat and protein) oxidized, carbon dioxide production is also measured and urea production estimated. See also Douglas bag method.

cal·o·rim·e·try

(kal'ŏr-im'ĕ-trē)
Measurement of the amount of heat given off by a reaction or group of reactions (as by an organism).

calorimetry,

n the measurement of the amounts of heat radiated and absorbed.

calorimetry

measurement of the heat eliminated or stored in any system.

direct calorimetry
measurement of heat actually produced by the organism which is confined in a sealed chamber or calorimeter.
indirect calorimetry
estimation of the heat produced by means of the respiratory differences of oxygen and carbon dioxide in the inspired and expired air.
References in periodicals archive ?
In 2007, he received the Mettler-Toledo Award of the North American Thermal Analysis Society (NATAS) and in 2008 the NATAS Fellows Award, when he also became the first English scientist to be awarded an honorary lifetime membership of the International Confederation for Thermal Analysis and Calorimetry, of which he is a past-president.
Therefore, introduction of the limiting controller is acceptable when compared with the advantage of constructing the proposed moment based on few hydration rate curves, which can be easily obtained from the standard calorimetry test.
The crosslinked sample of EVA copolymer was analyzed also by differential scanning calorimetry (DSC) to provide the results of melting temperatures.
Due to the time it takes for an individual to reach a physiological steady-state condition and for the indirect calorimetry measurement to reflect actual energy expenditure, the first 3 min of each 10-min measurement were not used in analysis.
Measuring a patient's body weight and an evaluation of body fat levels through the use of upper arm skin fold measurements can be useful to assess the effects of a patient's nutrition but calorimetry provides a direct measurement of the patient's overall metabolic rate and the specifics of carbohydrate, fat, and protein oxidation.
Indirect calorimetry can measure actual resting energy expenditure in the individual patient by using inspired oxygen and expired carbon dioxide.
Indirect calorimetry, a more practical method of measuring [?
Differential scanning calorimetry (DSC) were conducted using Jade Perkin Elmer at University Technology MARA, Perlis at a heating rate of 10[degrees]C/min from 30 to 300[degrees]C and nitrogen low rate of 20 mL/min; 8-9 mg samples were sealed between aluminum hermetic pans and lids for all tests.
Isothermal titration calorimetry, NMR titrations, and gel filtration demonstrated a 2:1 binding stoichiometry of FasWT Death Domain to CaM.
This signature represents the major proteins in blood plasma, measured by Differential Scanning Calorimetry (DSC).
Differential Scanning Calorimetry (DSC): This is a contained, ramped-temperature screening test on a small sample of material (normally 2 to 10 mg) which provides an indication of the onset temperature and, more importantly, the magnitude of any heat release (A1-0.
Isothermal calorimetry measures the heat a cementitious binder generates in a cement paste or concrete specimen as an indicator for the rate of reaction, which is key to engineering properties such as workability, set time and early strength development.