scholarly journals Water vapour absorption in the clear atmosphere of a Neptune-sized exoplanet

Nature ◽  
2014 ◽  
Vol 513 (7519) ◽  
pp. 526-529 ◽  
Author(s):  
Jonathan Fraine ◽  
Drake Deming ◽  
Bjorn Benneke ◽  
Heather Knutson ◽  
Andrés Jordán ◽  
...  
Keyword(s):  
Water Vapour ◽  
Water Vapour Absorption ◽  
Clear Atmosphere

scholarly journals The Impact of Post-Manufacture Treatments on the Surface Characteristics Important for Finishing of OSB and Particleboard

Forests ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 975
Author(s):  
Antonio Copak ◽  
Vlatka Jirouš-Rajković ◽  
Nikola Španić ◽  
Josip Miklečić
Keyword(s):  
Water Vapour ◽  
Oriented Strand Board ◽  
Construction Material ◽  
Surface Characteristics ◽  
Surface Treatments ◽  
Factors Affecting ◽  
Treatment Conditions ◽  
Water Vapour Absorption ◽  
The Impact

Oriented strand board (OSB) is a commonly used structural wood-based panel for walls and roof siding, but recently the industry has become interested in OSB as a substrate for indoor and outdoor furniture. Particleboard is mainly used in furniture productions and has become popular as a construction material due to its numerous usage possibilities and inexpensive cost. Moisture is one of the most important factors affecting wood-based panel performance and the post-treatment conditions affected their affinity to water. When OSB and particleboard are used as substrates for coatings, their surface characteristics play an important role in determining the quality of the final product. Furthermore, roughness can significantly affect the interfacial phenomena such as adsorption, wetting, and adhesion which may have an impact on the coating performance. In this research particleboard and OSB panels were sanded, re-pressed and IR heated and the influence of surface treatments on hardness, roughness, wetting, water, and water vapour absorption was studied. Results showed that sanding improved the wetting of particleboard and OSB with water. Moreover, studied surface treatments increased water absorption and water penetration depth of OSB panels, and re-pressing had a positive effect on reducing the water vapour absorption of particleboard and OSB panels.

An equation describing water vapour absorption on porous carbon

Carbon ◽  
1992 ◽  
Vol 30 (1) ◽  
pp. 123-124 ◽  
Author(s):  
S.S. Barton ◽  
M.J.B. Evans ◽  
J. MacDonald
Keyword(s):  
Water Vapour ◽  
Porous Carbon ◽  
Water Vapour Absorption

XIX.—On Radiative Diffusion in the Atmosphere

1931 ◽  
Vol 50 ◽  
pp. 225-242 ◽  
Author(s):  
O. F. T. Roberts
Keyword(s):  
Temperature Gradient ◽  
Water Vapour ◽  
Model Atmosphere ◽  
Upward Flow ◽  
Long Wave ◽  
Radiative Diffusion ◽  
Water Vapour Absorption ◽  
Temperature Records ◽  
Temperature Radiation ◽  
Continuous Temperature

SummaryThe processes of long-wave low-temperature radiation in the atmosphere have been studied with a view to investigating the extent to which they may be regarded as diffusion-like; the decrease of water-vapour with height is taken to be exponential, that of temperature to be constant up to the tropopause, and then to be zero. Full allowance is made for the radiation being diffuse, involving the functions ; such properties of these functions as are required in the further work are studied. The expression for the upward flow of radiation is obtained in the form of a power series in the temperature gradient in the troposphere; the coefficient of the first power of the temperature gradient is defined as the “coefficient of radiative diffusion.” There is shown to be a certain amount of ambiguity about the coefficient so defined.A model atmosphere resembling fairly well the conditions in N.W. Europe is considered: the upward flow of radiation and the coefficient of radiative diffusion are calculated; for this purpose we require Hettner's measurements of water-vapour absorption as modified by Simpson.The effect of the heating of the ground during the day to a temperature above that of the air near by is then considered; it is shown that the study of the results of this factor which are of importance in the interpretation of continuous temperature records near the ground requires measurements of the absorption of water-vapour for the wave-lengths for which it is particularly opaque; these do not appear to exist.

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