International Journal of Government Auditing, April 1, 1999, Vol. 26, No. 2 (French Version) (open access)

International Journal of Government Auditing, April 1, 1999, Vol. 26, No. 2 (French Version)

Other written product issued by the General Accounting Office with an abstract that begins "This French-language edition of the journal of the International Organization of Supreme Audit Institutions (INTOSAI) includes articles regarding: (1) changes in international auditing personnel; (2) audit planning; (3) implementing guidelines for INTOSAI auditing standards; (4) recognizing fraud indicators; (5) the Royal Audit Authority of Bhutan; (6) reports in print on auditing; and (7) activities inside INTOSAI."
Date: April 1, 1999
Creator: United States. General Accounting Office.
Object Type: Text
System: The UNT Digital Library
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