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Comparison of Effectiveness of Sub-Slab Ventilation Systems for Indoor Radon Mitigation: A Numerical Study; Comparaison a L`Aide D`Un Outil Numerique DE L`Efficacite Des Systemes DE Ventilation Active DU SOL Limitant La Penetration DU Radon Dans L`Habitat (open access)

Comparison of Effectiveness of Sub-Slab Ventilation Systems for Indoor Radon Mitigation: A Numerical Study; Comparaison a L`Aide D`Un Outil Numerique DE L`Efficacite Des Systemes DE Ventilation Active DU SOL Limitant La Penetration DU Radon Dans L`Habitat

The functioning of an active sub-slab ventilation system (SVS) has been studied successfully with the help of a previously evaluated numerical model. The parameters explored are the permeability of the sub-slab and the gravel placed beneath it, the amplitude of applied pressure at the installation point of the system and the functioning method: depressurization or pressurization. The mechanisms contributing to the success of the two systems are identified. This numerical study shows that the presence of a layer of gravel beneath the sub-slab considerably improves the performance of the SVS. Considered separately from the extremely permeable sub-slabs, the depressurization systems perform better than the pressurization systems. 17 refs. [Francais] Le fonctionnement des Systemes de Ventilation active du Sol (SVS) a ete etudie a l`aide d`un outil numerique precedemment evalue avec succes. Les parametres explores sont les permeabilites du sol et du gravier place sous plancher bas, l`amplitude de la pression appliquee au point d`installation du systeme, et le mode de fonctionnement: Depressurisation ou Pressurisation. Les mecanismes contribuant au succes des deux systemes sont identifies. Cette etude numerique montre que la presence d`une couche de gravier sous plancher bas ameliore de facon considerable les performances des SVS. Mis a part le …
Date: April 1, 1992
Creator: Bonnefous, Y. C.; Gadgil, A. J. & Allard, F.
Object Type: Article
System: The UNT Digital Library

Ensemble: 1992-10-07 - Spectrum

Composition recital performed at the UNT College of Music.
Date: October 7, 1992
Creator: Spectrum
Object Type: Sound
System: The UNT Digital Library
Theoria, Volume 6, 1992 (open access)

Theoria, Volume 6, 1992

Annual journal containing essays, studies, book reviews, and other articles related to the history of Western Music Theory, methods of analysis, and analytical discussions of musical compositions.
Date: 1992
Creator: Covach, John
Object Type: Journal/Magazine/Newsletter
System: The UNT Digital Library

Ensemble: 1992-04-22 - UNT Women's Chorus

Choral Concert performed at the UNT College of Music Concert Hall.
Date: April 22, 1992
Creator: University of North Texas. Women's Chorus.
Object Type: Sound
System: The UNT Digital Library

Ensemble: 1992-03-02 – Concert Choir

Concert Choir concert performed at the UNT College of Music Concert Hall.
Date: March 2, 1992
Creator: University of North Texas. Concert Choir.
Object Type: Sound
System: The UNT Digital Library

Pumps

High heeled pumps in blue satin with white polka dots. Black leather soles. Gold and white leather linings. Stamped label in instep: Rene Mancini /Fait Main / Paris Measurements: Length: 24 cm Width: 8cm Height: 14cm Heel: 8.5cm (3 1/4") high on axis w/cap
Date: Spring 1992
Creator: Mancini, Rene
Object Type: Physical Object
System: The UNT Digital Library