Results 221 to 230 of about 349,666 (265)

Thermal conductance and its relation to thermal time constants

Journal of Thermal Biology, 1981
Abstract A large body of thermoregulation studies exists in which the proper relationship between the physiological variable, thermal conductance, and heating or cooling time is not recognized. This is owing, in part, to conflicting definitions of conductance which either fail to relate to mean heat flow through the body surface or which fail to ...
Stanley L. Robertson, E.Norbert Smith
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Thermal constants measurement techniques applied to thermal analysis

Thermochimica Acta, 1992
Abstract Recent development and applications of many new materials have resulted in them being made available only in small amounts or in special configurations such as thin films. In order to characterize their thermal transport and related properties in these forms, it has been necessary to develop new and improved quantitative measurement ...
R.P. Tye, R.L. Gardner, A. Maesono
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Thermal expansion and elastic constants

International Journal of Thermophysics, 1991
We give a simple, useful relationship between thermal expansion, ΔV/V, and elastic constants. The relationship permits estimation of thermal expansion from only elastic constants (second order and third order) and atomic volume. Elastic-constant temperature dependence is not required.
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Thermal behavior of the constant volume body plethysmograph

IEEE Transactions on Biomedical Engineering, 1995
The thermal behavior of the constant volume body plethysmograph under the thermal effect of the patient and the thermostatic bag is modeled by two relations: the first is between the temperature in the box and the heat flux generated by the patient and the bag, and the second is between the pressure in the box and the same flux.
Philippe Saucez, Marcel Remy, Christine Renotte, Marcel Mauroy   +3 more
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A Review of Thermal-Radiation Constants

Journal of Fluids Engineering, 1954
Abstract A survey of engineering literature and some of the recent textbooks in heat transfer indicates a lack of knowledge by the authors that the various radiation constants used are no longer valid. The various radiation constants, as reported in the CGS system of units by Birge (3), have been ignored, as well as the recent work of ...
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The thermal constants of setting concrete

Proceedings of the Physical Society, 1936
The rise in temperature in a large mass of concrete during setting may be considerable, and the shrinkage stresses induced by the subsequent cooling may become large enough to cause cracking. It is, therefore, important to be able to calculate the rise of temperature likely to occur in such a mass.
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Correlation Functions and Thermal Rate Constants

The Journal of Physical Chemistry A, 2001
Thermal rate constants k(T) and cumulative reaction probabilities N(E) can be computed as a sum of correlation functions C-nm =
Hans O. Karlsson, Osvaldo Goscinski
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A thermal interpretation of the cosmological constant

Classical and Quantum Gravity, 1988
A metric-affine geometrical structure is used to formulate a generalised theory of gravity, in which the motion of a test particle is characterised by a finite proper acceleration in the local tangent space. According to the local equivalence, valid for quantum systems, between acceleration and temperature, the theory is thermally interpreted as an ...
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Thermal aspects of constant rate transformation

Journal of Thermal Analysis, 1988
A mathematical model for the conjugate formulation of the working conditions of the Q-derivatograph is created. There are no simplifying assumptions about the heat transfer processes for reacting active media and for their thermal interaction with the inert surroundings in this model. The energetic significance of the key components of the transfer and
A. I. Borovikova, V. A. Logvinenko
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Thermal Constants and Structure of Tin Clusters

1990
The Knudsen effusion method coupled with high temperature mass spectroscopy was used in evaluating thermal constants for the gaseous Snn (n=4–7) molecules. The enthalpies for the following reaction was determined: Snn(g) = nSn(g) for n = 4–7. The resulting atomization energy, heats of formation and entropy are for the linear molecules:
Richard W. Schmude, Karl A. Gingerich, Joseph E. Kingcade   +2 more
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