Results 261 to 270 of about 1,621,211 (304)

On the hydration heat capacity change of benzene

Biophysical Chemistry, 2005
The heat capacity change associated with the hydration of benzene is a large and positive quantity, but it is significantly smaller than that associated with the hydration of an alkane having the same accessible surface area of benzene, the corresponding alkane. This large difference merits attention and should be rationalized.
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Effect of the Hydration Heat on Creep

Applied Mechanics and Materials, 2013
A method for the box girders creep calculation considering the hydration heat is proposed and the effect of the hydration on the creep is discussed. The box girder is divided into several components and the average hydration temperature of the component is defined to represent the general condition resulted in the hydration. The formulae of the average
Rui Rao, Yong Hui Huang, Ai Rong Liu
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A Perspective on "Volume and heat of hydration of ions"

Theoretical Chemistry Accounts: Theory, Computation, and Modeling (Theoretica Chimica Acta), 2000
Born's simple derivation of the free energy of hydration of ions is classic. It connects the microscopic atomic properties with the macroscopic thermodynamics in a transparent fashion.
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Heats of formation of some hydrates

Canadian Journal of Chemistry, 1976
Heats of formation of hydrates may be measured by dissolving the hydrate and the corresponding anhydrate in water to attain the same final concentration and measure the difference in heats of solution.Measurements were made at 0 °C in a modified Bunsen ice calorimeter, well insulated, and surrounded with an ice–water mixture.The data obtained are a ...
Alan Phillipson, Gordon R. Finlay
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Heat of hydration of 2-nitropyrrole

Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 1958
1. The shift in the ultraviolet absorption maximum of 2-nitropyrrole resulting from change in solvent from glacial acetic acid to dilute acetic acid is associated with hydration of the solute molecules; the heat of hydration has a value of from −1.5 to − 1.7 kcal/mole. 2.
V. M. Belikov, S. G. Mairanovskii, E. N. Safonova, S. S. Novikov   +3 more
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The heats of hydration of cement constituents

Cement and Concrete Research, 1982
Abstract Integral heats of hydration and time courses of heat power function were directly measured for a series of nine cements in a heat-conduction calorimeter. Both the heat power and the integral heat of hydration of cement constituents C3S, C2S, and C3A+C4AF were evaluated by the thermochemical analysis method. The rate of heat evolution courses
M. Kamiński, W. Zielenkiewicz
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Heat capacity of hydration in zeolites

American Mineralogist, 2007
Dehydration of zeolites is a critical factor in their stability, effectiveness as storage media for thermal energy, and influence on the thermal evolution of radioactive waste repositories. Prediction of the hydration states of zeolites as a function of temperature, pressure, and water activity is often hampered by limited data on the heat capacity ...
P. S. Neuhoff, J. Wang
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Exercise in the Heat and Adequate Hydration

ACSM'S Health & Fitness Journal, 2013
Q: ALTHOUGH I ENJOY EXERCISING OUTDOORS DURING THE SUMMER MONTHS, I DO FIND THE HEAT TO BE A CHALLENGE. I TRY TO STAY HYDRATED WHEN DOING LONGER ENDURANCE SESSIONS, BUT I AM NOT SURE I’M GETTING IN THE RIGHT AMOUNT OF FLUIDS.
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Solution calorimetry to assess effects of water-cement ratio and low temperature on hydration heat of cement

Construction and Building Materials, 2021
Qicai Wang
exaly  

On the heat of hydration of cements

1979
In this paper, the main interest will lie in the heat liberation and a little in the mechanical properties.
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