A formulation of the Eurocode 2 concrete model at elevated temperature that includes an explicit term for transient creepGernay, Thomas ; Franssen, Jean-Marc ![]() in Fire Safety Journal (2012), 51 The first objective of this paper is to highlight the capabilities and limitations of concrete uniaxial constitutive models at elevated temperatures for thermo-mechanical behavior modeling, depending on ... [more ▼] The first objective of this paper is to highlight the capabilities and limitations of concrete uniaxial constitutive models at elevated temperatures for thermo-mechanical behavior modeling, depending on the implicit or explicit consideration of transient creep strain in the model. The characteristics inherent to the two types of models are described and compared. It appears that one of the major limitations of implicit models concerns the unloading stiffness. Based on numerical analysis performed on loaded concrete columns subjected to natural fire, it is shown that the stress–temperature paths experienced by structural concrete are varied and complicated and that concrete material models cannot handle properly these complex situations of unsteady temperatures and stresses without explicit consideration of transient creep. The second objective of the paper is to propose a new formulation of the Eurocode 2 concrete material model that contains an explicit term for transient creep. The new model is implemented in the software SAFIR and validated against experimental data of the mechanical strain developed by concrete cylinders under different unsteady temperatures and loads. It is shown that the actual material behavior is better matched with the new explicit model than with the current implicit Eurocode 2 model. Finally, a comparison is given between experimental and computed results on a centrally loaded concrete column submitted to heating–cooling sequence. [less ▲] Detailed reference viewed: 90 (30 ULg) Formulation of vegetal creams influence of oil kind on physicochemical properties.Anihouvi, Prudent ; Danthine, Sabine ; Vanderghem, Caroline et alPoster (2007, October 11) Detailed reference viewed: 21 (6 ULg) Formulation solide de la lipase de Yarrowia lipolytica; Destain, Jacqueline ; Thonart, Philippe ![]() Poster (2005, March 05) Detailed reference viewed: 2 (0 ULg) Les formulations a liberation lente.Schiffers, Bruno ![]() in Annales de Gembloux (1985), 91(1), Detailed reference viewed: 15 (4 ULg) Les formules basées sur la créatinine :indiscutable ?Delanaye, Pierre ![]() Conference given outside the academic context (2008) Detailed reference viewed: 14 (2 ULg) Formules de calcul de distances à respecter entre bâtiments d'élevage et habitations pour que l'odeur soit acceptable. Comparaisons et proposition, puis validation d'une formule pour la Wallonie (Belgique)Nicolas, Jacques ; ; et alin Actes des septièmes journées de la recherche avicole (2007) Le Gouvernement de la Région wallonne (Belgique) a confié à l'unité de recherche la tâche d'inventorier les différentes directives relatives au calcul de la distance à respecter entre les bâtiments d ... [more ▼] Le Gouvernement de la Région wallonne (Belgique) a confié à l'unité de recherche la tâche d'inventorier les différentes directives relatives au calcul de la distance à respecter entre les bâtiments d'élevage (dont les élevages de volailles) et les habitations pour assurer un niveau d'acceptabilité de l'odeur générée. Huit formules de calcul, appliquées dans différents pays, ont été examinées et comparées et une étude de sensibilité des différents paramètres a été menée. Cette première comparaison a donné lieu à une appréciation des différentes méthodologies, selon des critères de pertinence par rapport à la réalité de terrain, de faisabilité technique, d'applicabilité à la Région wallonne et de cohérence avec les théories de la génération et de la dispersion des odeurs. Sur base de ces différents éléments, une formule originale a été proposée : elle permet de calculer une distance d'acceptabilité de la nuisance olfactive sur base de facteurs multiplicatifs incluant les éléments suivants : nombre et type d'animaux, facteurs techniques de l'étable (type, stockage et manipulation de la litière, ventilation, nourriture), environnement orographique et météorologique et type de voisinage. Les différents paramètres de cette formule ont été ajustés grâce à des visites de terrain, puis la formule a été validée sur 22 poulaillers et élevages de canards. La compatibilité a été testée avec les unités d'odeur, les débits d'odeur et les percentiles spatio-temporels utilisés pour apprécier les zones de nuisances olfactives. [less ▲] Detailed reference viewed: 104 (6 ULg) Les formules de répartition du fonds des communes orientent-elles la fiscalité locale ?Husson, Jean-François ![]() in Revue de Fiscalité Régionale et Locale (2013), 1 The Municipal Fund, or Fonds des communes, is a general transfer to Walloon municipalities. A 1989 reform has introduced a formula taking into account fiscal returns and it was considered that this has ... [more ▼] The Municipal Fund, or Fonds des communes, is a general transfer to Walloon municipalities. A 1989 reform has introduced a formula taking into account fiscal returns and it was considered that this has has an inlfluence on local fiscal mix. This paper analyses the evolution of the main local taxes of Walloon municipalities and present a comparison with the situation in the other Belgian regions. [less ▲] Detailed reference viewed: 20 (7 ULg) Formules du pathos et survivances culturelles. Introduction à Aby WarburgHagelstein, Maud ![]() Scientific conference (2010, May 26) Detailed reference viewed: 12 (0 ULg) Formules homériques et musique religieuse afro-américainePirenne, Christophe ![]() in Revista de Musicología (1993), XVI(4), 24-33 Detailed reference viewed: 12 (2 ULg) FORS1 is getting Blue: New Blue Optimised Detectors and High Throughput Filters; ; et al in The Messenger (2007), 128 Ground-based observations in the ultraviolet part of the electromagnetic spectrum are notoriously difficult owing to absorption of the atmosphere, of optical elements and the poorer efficiency of ... [more ▼] Ground-based observations in the ultraviolet part of the electromagnetic spectrum are notoriously difficult owing to absorption of the atmosphere, of optical elements and the poorer efficiency of detectors. Now that CCD detectors with excellent UV response and cosmetic quality have become available, it was time to optimise FORS1 for imaging, low-resolution spectroscopic and polarimetric observations in the blue-UV. As a bonus, a new set of broadband filters with very high trans-mission and carefully defined filter bands were installed. [less ▲] Detailed reference viewed: 2 (0 ULg) La fortuna editoriale del Carteggio di Francesco Guicciardini, dal Cinquecento ai giorni nostriMoreno, Paola ![]() Book published by Istituto Storico Italiano per l’Età Moderna e Contemporanea (2010) Detailed reference viewed: 26 (2 ULg) La Fortuna romaine et l'héritage grecLeers, Larissa ![]() Master's dissertation (2010) We have chosen to focus in this paper the concept of fate in Rome, and this, especially through the cult of the goddess Fortuna. Indeed, it has two significant innovations compared to other deities of the ... [more ▼] We have chosen to focus in this paper the concept of fate in Rome, and this, especially through the cult of the goddess Fortuna. Indeed, it has two significant innovations compared to other deities of the Roman pantheon, since on the one hand, it completely changed in nature over the centuries, and, on the other hand, when this gradual change, Goddess Latial it is in its origins, it becomes a goddess Roman itself. Thus, the mother-goddess and fertility, it becomes gradually finally became exclusively in its sanctuaries of Latium, a goddess of luck. (...) [less ▲] Detailed reference viewed: 37 (10 ULg) La Fortune des Liaisons dangereusesTilkin, Françoise ![]() Article for general public (2011) Detailed reference viewed: 20 (4 ULg) La fortune et la réception de Léonard de Vinci et de ses oeuvres peintes en France, à la Renaissance et à l'âge classiqueFagnart, Laure ![]() Doctoral thesis (2004) Detailed reference viewed: 41 (9 ULg) Forty years of Genetic improvement of cotton through interspecific hybridisation at Gembloux Agricultural University : achievement and prospectsMergeai, Guy ![]() in proceedings of the World cotton Research Conference III (2003) Detailed reference viewed: 3 (0 ULg) Forty years research on the population dynamics of the black grouse (Tetrao tetrix) in the Belgian Hautes-Fagnes.Poncin, Pascal ; ; Loneux, Michèle et alConference (2007) Detailed reference viewed: 7 (3 ULg) Forty years research on the population dynamics of the black grouse (Tetrao tetrix) in the Belgian Hautes-Fagnes. - Ten years of management.Poncin, Pascal ; ; Loneux, Michèle et alPoster (2007) Detailed reference viewed: 6 (2 ULg) The Forty-Minute Period of Jupiter's X-ray Polar EmissionGrodent, Denis ; ; et alPoster (2001) The observation of Jupiter's x-ray auroral emission during the Cassini Jupiter flyby has brought information of prime interest. The High Resolution Camera onboard the Chandra satellite has a pixel size of ... [more ▼] The observation of Jupiter's x-ray auroral emission during the Cassini Jupiter flyby has brought information of prime interest. The High Resolution Camera onboard the Chandra satellite has a pixel size of ~.13 arcsec, which makes it possible to discriminate emission features inside the Jovian polar regions. A ten-hour (one full Jovian rotation) light curve of the northern polar cap region (i.e. a region enclosed by System-3 longitude 160-180° and latitude 60-70°) clearly shows a forty-minute oscillation. This oscillation is shown to be independent of the viewing geometry. Such an oscillation is more speculative for the southern polar cap for which the S/N is much lower than in the North. However, if statistically significant, the fluctuation observed in the southern cap may be in close anticorrelation with the northern cap light curve. This would suggest a bouncing motion of the impinging particles, presumably sulfur and oxygen ions, between the polar cap mirror points. Comparison with HST-STIS far ultraviolet (FUV) observations taken during this Jovian rotation allows us to correlate the x-ray emission with a persistent FUV feature mapping to ~30 RJ in the dayside magnetosphere. This feature shows significant local time variations. However, the sampling of the STIS observations does not permit us to highlight a forty-minute oscillation in the corresponding ultraviolet light curve. Previous STIS spectra favor a high FUV color ratio for the polar cap emission, which is consistent with precipitation of high energy sulfur and oxygen ions. [less ▲] Detailed reference viewed: 5 (0 ULg) FORUM : un système d'animation et d'évaluation de grands groupes universitaires; Leclercq, Dieudonné ![]() in Colloque de l'Association Internationale de Pédagogie Universitaire (AIPU) (1996, November) Detailed reference viewed: 49 (1 ULg) Forum bij de krantenkioskYans, Baudoin ; Nachtergaele, Lutgarde ![]() Book published by Editions Erasme (1996) Detailed reference viewed: 6 (0 ULg) |
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