calorimetric การใช้

• This effect is particularly relevant for differential scanning calorimetric thermograms.
• The above rules refer only to suitable calorimetric materials.
• Again, simple algebraic manipulation is required; for example, calorimetric experiments give:
• Accordingly, Rankine measured quantity of heat in units of work, rather than as a calorimetric quantity.
• Here the classical rule is assumed to hold for the calorimetric material being used, and the propositions are mathematically written:
• In their publication, the investigators show details of their calorimeters'design and teach the technology of achieving high calorimetric accuracy.
• Where \ Delta H is the enthalpy of transition, K is the calorimetric constant, and A is the area under the curve.
• "' Adair Crawford "'calorimetric methods for measuring the specific heat capacity of substances and the heat of chemical reactions.
• Two promising methods for the description of the acid-base properties of metal oxides are Calorimetric measurements of adsorption enthalpies and Temperature Programmed desorption.
• Then, according to Adkins ( 1975 ), it can be shown that one can write a further thermodynamic version of the above calorimetric rules:
• Most chemists relied on the familiar thermodynamics of heat ( enthalpy ) of Berthelot, Ostwald, and Van t Hoff, and the calorimetric school.
• A mathematical correction factor, known as the phi-factor, can be used to adjust the calorimetric result to account for these heat losses.
• The calorimetric constant will vary from instrument to instrument, and can be determined by analyzing a well-characterized sample with known enthalpies of transition.
• Heats of formation can be determined experimentally though calorimetric studies; however, calculated enthalpies are more commonly used due to the greater ease of acquisition.
• In this scenario, the transition temperature is known as the " calorimetric ideal glass transition temperature " " T " 0c.
• For studies of hydration at very high relative humidities, a special modification of the method of sorption calorimetry  the desorption calorimetric method  was developed.
• For a calorimetric material substance; it is of the essence of heat transfer that it is not mediated by the externally defined forces variables that define work.
• For example, values of the Gibbs energy obtained from high-temperature equilibrium emf methods must be identical to those calculated from calorimetric measurements of the enthalpy and entropy values.
• In 1990, barely a year after the original announcement of excess energy in an electrochemical cell by Pons and Fleischmann, Oriani corroborated this finding using a sophisticated calorimetric technique.
• In each repetition of a cyclic process, the net work done by the system, measured in mechanical units, is proportional to the heat consumed, measured in calorimetric units.