(n.) An apparatus for measuring the amount of heat contained in bodies or developed by some mechanical or chemical process, as friction, chemical combination, combustion, etc.
(n.) An apparatus for measuring the proportion of unevaporated water contained in steam.
Example Sentences:
(1) The subjects were all apparently healthy, had a mean body weight of 66 kg and had spent the preceding day in the calorimeter performing different fixed physical activity programmes.
(2) The heat uptake that resulted from immersing the hand and wrist into a water-filled calorimeter maintained at temperatures between 37-40 degrees C was measured under standard conditions in a group of eight subjects of either sex.
(3) The indirect calorimeter system included an air-temperature-controlled chamber and heart rate monitor.
(4) The values of Ngas determined with the calorimeter are within 1% of Ngas calculated according to the AAPM protocol, using the 60Co exposure-calibration factor.
(5) A multifrequency calorimeter has been designed to measure the amplitude and time regime of the enthalpic fluctuations associated with structural or conformational transitions in biological macromolecular systems.
(6) The pigs were placed individually into an open-circuit, indirect calorimeter and connected to an arteriovenous (A-V) O2 difference analyzer for hourly simultaneous measurements of O2 consumption by W and PVDO.
(7) A calorimeter suitable for measuring human energy expenditure has been assembled by the US Department of Agriculture in Beltsville, Maryland.
(8) Thermopile heat conduction calorimeters normally have high time constants.
(9) It is essential to train each hen before a series of calorimeter experiments.
(10) Thermoregulatory sweating was minimized by adjusting cooling in the calorimeter suit.
(11) Mechanical efficiency during a step test was measured in chronically energy-deficient (CED) individuals and compared to well-nourished subjects using a whole-body indirect calorimeter.
(12) Their rate is comparable to the velocity of temperature change in a calorimeter, which is the cause of non-equilibrium effects in a calorimetric experiment.
(13) The intrinsic instrumental component is always present and its effect on the shape of the experimental curve depends on the magnitude of the calorimeter response time.
(14) Daily energy expenditure (determined in a whole room calorimeter) was significantly correlated with both fat-free mass (FFM) and aerobic fitness (estimated from maximum aerobic capacity or VO2max).
(15) A rapid-response stopped-flow calorimeter for small samples of reagents is described.
(16) A transportable, whole body indirect calorimeter, designed for use in the tropics, is described.
(17) The irreversible thermal denaturation of the association complexes of bovine beta-trypsin with soybean trypsin inhibitor or ovomucoid was observed with a differential scanning calorimeter.
(18) There were no differences (P greater than .05) in 8- to 24-h fasting O2 and CO2 measurements determined on d 16, 19, 20 and 21, indicating that adaptation to calorimeters was not needed by the pigs.
(19) The shape of the thermogram and the total heat output of aerobically growing cultures of Klebsiella aerogenes depend on the nature and state of the inoculum, the composition of the growth medium, aeration in the fermentor and in the calorimeter, and the pump rate of the culture through the microcalorimeter cell.
(20) The results showed no detectable heat defect in graphite after prolonged periods of exposing the calorimeter to air at atmospheric pressure.
Pyrometer
Definition:
(n.) An instrument used for measuring the expansion of solid bodies by heat.
(n.) An instrument for measuring degrees of heat above those indicated by the mercurial thermometer.
Example Sentences:
(1) After Josiah invented the pyrometer, a device for measuring higher degrees of heat in kilns, he was elected to the Royal Society in 1783.
(2) Infrared pyrometers have been used in industry to record the temperature of mechanical objects at a distance.
(3) When using an electric casting machine, be certain that the pyrometer is correct.
(4) Herein we describe a dilatometer that consists of a low-mass infrared furnace for rapid heating or cooling, an optical pyrometer, and a laser interferometer.
(5) In rectus abdominis myocutaneous island flaps (3.0 x 1.5 cm) of rats (Uje:WIST) skin surface temperature was measured by an infrared pyrometer for monitoring flap viability following experimentally induced blood flow insufficiency.