An Experimental Study of the Kinetics and Thermodynamics of Water Vapour Dissolution in a CaO–SiO2–MgO Slag

1981 ◽  
Vol 20 (2) ◽  
pp. 181-187 ◽  
Author(s):  
D. J. Zuliani ◽  
M. Iwase ◽  
A. McLean ◽  
T. R. Meadowcroft
Keyword(s):  
Experimental Study ◽  
Water Vapour ◽  
Kinetics And Thermodynamics

An experimental study of ordering in sodium-rich alkali feldspars

1968 ◽  
Vol 36 (284) ◽  
pp. 1061-1077 ◽  
Author(s):  
Ian Parsons
Keyword(s):  
Experimental Study ◽  
Water Vapour ◽  
Low Temperatures ◽  
Hydrothermal Crystallization ◽  
Equilibrium Degree ◽  
Temperature Range ◽  
Degree Of Order ◽  
Alkali Feldspars

SummaryVariations in the value of 2θ131 – 2θ13̄1 of two anorthoclase feldspars of compositions Ab95Or5 and Ab90Or10 were investigated by hydrothermal crystallization of gels for long periods in the temperature range 500–950 °C, at water vapour pressures up to 15 000 lb/in.2. The results are compared to those obtained by MacKenzie (1957) for pure albite. It is shown that the variation in 2θ131 – 2θ13̄1 is largely the result of Al-Si order-disorder and that at 700 °C and above the magnitude of the variation in the anorthoclases suggests that the degree of order is like that in albite, but at lower temperatures, particularly below 600 °C, the variation is less, and the anorthoclases are less ordered than albite at the same temperatures. At 600 °C and above the rate of attainment of equilibrium is the same for all three compositions. Below 600 °C Ab95Or5 behaves differently to albite. At low temperatures the equilibrium degree of Al-Si order in mixed Na-K feldspars is a function of composition as well as of temperature of crystallization.

scholarly journals Experimental Evaluation of 79 and 300 GHz Radar Performance in Fire Environments

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 439
Author(s):  
Aleksandr Bystrov ◽  
Liam Daniel ◽  
Edward Hoare ◽  
Fatemeh Norouzian ◽  
Mikhail Cherniakov ◽  
...  
Keyword(s):  
Experimental Study ◽  
Water Vapour ◽  
Experimental Evaluation ◽  
Theoretical Calculations ◽  
Video Camera ◽  
Experimental Results ◽  
Radar Signal ◽  
Signal Attenuation ◽  
Millimetre Wave ◽  
In Fire

This paper presents an experimental study of the propagation of mm-wave/low-THz signals in the frequency ranges of 79 and 300 GHz through fire. Radar performance was investigated in various real scenarios, including fire with strong flame, dense smoke and water vapour. A stereo video camera and a LIDAR were used as a comparison with other common types of sensors. The ability of radars to enable the visibility of objects in fire environments was proven. In all scenarios, the radar signal attenuation was measured, and in the case of steam was compared with theoretical calculations. The analysis of the experimental results allows us to conclude that there are good prospects for millimetre wave and Low Terahertz radar in the field of firefighting imaging equipment.

An experimental study of the solubility of Gallium(III) oxide in HCl-bearing water vapour

2013 ◽  
Vol 119 ◽  
pp. 137-148 ◽  
Author(s):  
S.Yu. Nekrasov ◽  
Art.A. Migdisov ◽  
A.E. Williams-Jones ◽  
A.Yu. Bychkov
Keyword(s):  
Experimental Study ◽  
Water Vapour

Adsorption of water vapour on solid surfaces

1951 ◽  
Vol 209 (1098) ◽  
pp. 297-308 ◽  
Keyword(s):  
Experimental Study ◽  
Water Vapour ◽  
Long Range ◽  
Polarized Light ◽  
Surface Effects ◽  
Solid Surfaces ◽  
Adsorbed Film ◽  
Adsorption Of Water ◽  
Molecular Layers

An experimental study has been made of the adsorption of water vapour on solid surfaces. Two methods are used, the first a direct weighing of the adsorbed film on a microbalance and the second an examination of polarized light reflected from the surface. Both methods agree and show that, for the surfaces examined, the adsorption of water at vapour pressures near saturation corresponds only to about two molecular layers. The experiments suggest that the heavy adsorption, which has been previously observed and which has been quoted as evidence for long-range surface effects, is due to contamination.

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