Browsing
     by title


0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

or enter first few letters:   
OK
Full Text
See detailMicro-adénomes à prolactine : le traitement par cabergoline
Beckers, Albert ULg; Valdes Socin, Hernan Gonzalo ULg

in Médecine Thérapeutique Endocrinologie (2000), 2(6), 496-500

Detailed reference viewed: 24 (0 ULg)
Full Text
Peer Reviewed
See detailMicro-analyse des mécanismes de la reprise démographique des villages de l'Ardenne du Nord-Est : le cas de Burtonville
Schmitz, Serge ULg

in Espace, Populations, Sociétés (2001)

If they are well selected, macro scale analyses permit to underline some mechanisms that remain hidden or are difficult to distinguish with micro scale analysis. The populations' stories an history of ... [more ▼]

If they are well selected, macro scale analyses permit to underline some mechanisms that remain hidden or are difficult to distinguish with micro scale analysis. The populations' stories an history of Burtonville in their regional context show : - lags of demographic revivals between villages and small towns - relevance of material constraints inherent in a small village for the demographic development - relevance of landed property and genealogy for the village evolution - links between demographic and economic evolutions - diversification of environmental aspirations and their results on migrations. [less ▲]

Detailed reference viewed: 23 (8 ULg)
Full Text
Peer Reviewed
See detailMicro-catchments classification: a tool for mud flow mitigation
Degre, Aurore ULg; Mokadem, Abdel Ilah; Cordonnier, Hélène et al

Poster (2010, November)

Hydrologic similarities between catchments can be of use in the context of overland flood and mud flow hazards management. In Wallonia, upstream micro-catchments were mapped for each runoff concentration ... [more ▼]

Hydrologic similarities between catchments can be of use in the context of overland flood and mud flow hazards management. In Wallonia, upstream micro-catchments were mapped for each runoff concentration axis. The outlets of these catchments are considered at the point where water reaches the permanent river stream. No less than 145 547 micro catchments were mapped in Wallonia (16900 km²). Their area varies between 1 and 1233 ha (mean area: 7.8 ha). A data base was built up to synthesize their major characteristics like e.g. area, shape and mean slope. No clear classification appeared. At this stage, it became obvious that the major components of these catchments had to be handled simultaneously from a hydrological point of view in order to produce a clear classification. The main hydrologic significant data are available in Wallonia: the digital soil map at 1/20 000 scale, the DTM (raster file of 10 meters resolution), digital land use at 1/10 000 scale and spatial statistics for rain (IDF curves for each commune). A hydrologic model was developed using the python programming language in the ArcGis 9.3 environment. This model is based on the NRCS – USDA method. Rain abstraction is calculated on the basis of a CN (curve number) which integrates the soil type, the land use and the slope. Water transfer is computed using a convolution based on triangular unit hydrogrammes. This calculation includes the concentration time which integrates the catchment morphology (shape and slope) and the land use (roughness). The MUSLE equation is also computed in order to handle the sediment problem. The results consist in a full project hydrograph, peak flow value, flood water volume and sediment quantification in response to a project rainfall. The CN and MUSLE semi-empirical methods are validated at larger scale in Wallonia but have still to demonstrate their efficiency at the micro-catchment scale. Nevertheless, the aforementioned variables can be considered as integration factors of the whole hydrological context of the micro-catchments. It allows us to build advice on overland flow and mud flow mitigation at watershed scale. This approach can also be of help to compare ungauged micro-catchments between each other and possibly transpose the soil conservation practices from a site to another. [less ▲]

Detailed reference viewed: 35 (9 ULg)
Full Text
Peer Reviewed
See detailMicro-Computed Tomography Based Computational Fluid Dynamics for the Determination of Shear Stresses in Scaffolds Within a Perfusion Bioreactor
Zermatten, Emilie; Vetsch, Jolanda Rita; Ruffoni, Davide ULg et al

in ANNALS OF BIOMEDICAL ENGINEERING (2014), 42(5), 1085-1094

Perfusion bioreactors are known to exert shear stresses on cultured cells, leading to cell differentiation and enhanced extracellular matrix deposition on scaffolds. The influence of the scaffold's porous ... [more ▼]

Perfusion bioreactors are known to exert shear stresses on cultured cells, leading to cell differentiation and enhanced extracellular matrix deposition on scaffolds. The influence of the scaffold's porous microstructure is investigated for a polycaprolactone (PCL) scaffold with a regular microarchitecture and a silk fibroin (SF) scaffold with an irregular network of interconnected pores. Their complex 3D geometries are imaged by micro-computed tomography and used in direct pore-level simulations of the entire scaffold-bioreactor system to numerically solve the governing mass and momentum conservation equations for fluid flow through porous media. The velocity field and wall shear stress distribution are determined for both scaffolds. The PCL scaffold exhibited an asymmetric distribution with peak and plateau, while the SF scaffold exhibited a homogenous distribution and conditioned the flow more efficiently than the PCL scaffold. The methodology guides the design and optimization of the scaffold geometry. [less ▲]

Detailed reference viewed: 7 (1 ULg)
Full Text
See detailMicro-controverses : ce qu'elles sont et pourquoi les étudier.
Mormont, Marc ULg

Conference (2010, April 01)

Les micro-controverses sont identifiées comme les points de rencontre entre des systèmes-experts à base scientifique et technique et des pratiques sociales enracinées dans des mondes vécus. Elles méritent ... [more ▼]

Les micro-controverses sont identifiées comme les points de rencontre entre des systèmes-experts à base scientifique et technique et des pratiques sociales enracinées dans des mondes vécus. Elles méritent d'être étudiées pour ce qu'elles révèlent à la fois des limites de la connaissance positive et des capacités des acteurs sociaux à se constituer comme experts. [less ▲]

Detailed reference viewed: 65 (10 ULg)
Full Text
Peer Reviewed
See detailMicro-crédit, Augmentation du pouvoir d’achat et Amélioration des conditions de vie des populations précaires en milieu urbain africain : Résultats d’une expérience menée dans la zone de santé de Bandalungwa à Kinshasa, Congo.
Manzambi Kuwekita, Joseph ULg; Gosset, Christiane ULg; Guillaume, Michèle ULg et al

in Psychologie et Société Nouvelle (2013), XII(3), 3-14

Purchasing power increase, improvement of living conditions and health funding of vulnerable people in African urban areas: the case of the health zone of Bandalungwa, Kinshasa (Congo) Through a survey ... [more ▼]

Purchasing power increase, improvement of living conditions and health funding of vulnerable people in African urban areas: the case of the health zone of Bandalungwa, Kinshasa (Congo) Through a survey, the study analyses the living improvement possibilities for microentrepreneurs, by the improvement of their purchasing power through microcredits provided by the Programme National d’Appui à la Protection Sociale (PNPS), in the health zone of Bandalungwa (Kinshasa). The credits were affected to wheat flour, starches, fresh food, fruits and vegetables, small restoration, smoked fish, clothing, electronic devices. Main results suggest that 68% of the microentrepreneurs financed by the program have declared improved living conditions. This improvement was associated to access to health care, children schooling, household’s access to food, loan reimbursement, and rent payment. The bivariate analysis has shown that those who had invested the whole credit in the funded activity experienced living improvement. To help vulnerable people in increasing their purchasing power, the loans should be linked to projects that are helpful to the households, and avoid that households use the credit in unsuitable ways, which could maintain them in a high level of debt. [less ▲]

Detailed reference viewed: 138 (17 ULg)
Full Text
Peer Reviewed
See detailMicro-crystalline inclusions analysis by PIXE and RBS
Strivay, David ULg; Ramboz, Clairette; Gallien, Jean-Paul et al

in Nuclear Instruments & Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms (2008), 266(10), 2375-2378

A characteristic feature of the nuclear microprobe using a 3 MeV proton beam is the long range of particles (around 70 mu m in light matrices). The PIXE method, with EDS analysis and using the multilayer ... [more ▼]

A characteristic feature of the nuclear microprobe using a 3 MeV proton beam is the long range of particles (around 70 mu m in light matrices). The PIXE method, with EDS analysis and using the multilayer approach for treating the X-ray spectrum allows the chemistry of an intra-crystalline inclusion to be measured, provided the inclusion roof and thickness at the impact point of the beam (Z and e, respectively) are known (the depth of the inclusion floor is Z + e). The parameter Z of an inclusion in a mineral can be measured with a precision of around 1 mu m using a motorized microscope. However, this value may significantly depart from Z if the analyzed inclusion has a complex shape. The parameter e can hardly be measured optically. By using combined RBS and PIXE measurements, it is possible to obtain the geometrical information needed for quantitative elemental analysis. This paper will present measurements on synthetic samples to investigate the advantages of the technique, and also on natural solid and fluid inclusions in quartz. The influence of the geometrical parameters will be discussed with regard to the concentration determination by PIXE. In particular, accuracy of monazite micro-inclusion dating by coupled PIXE-RBS will be presented. (C) 2008 Elsevier B.V. All rights reserved. [less ▲]

Detailed reference viewed: 40 (10 ULg)
Peer Reviewed
See detailMicro-CT as an evaluation tool for first line screening of the bone forming capacity of human periosteum-derived cells in nude mice
Geeroms, Carla; Bosmans, Kathleen; Maréchal, Marina et al

in Abstract book User Meeting Bruker MicroCT 2012 (2012)

Detailed reference viewed: 3 (1 ULg)
Peer Reviewed
See detailMicro-CT evaluation of the effect of material, donor and implantation site variability on the bone forming capacity of progenitor cell/CaP-collagen constructs implanted ectopically in nude mice
Van Hove, Astrid; Geeroms, Carla; Maréchal, Marina et al

in Abstract book User Meeting Bruker MicroCT 2013 (2013)

Detailed reference viewed: 6 (0 ULg)
Peer Reviewed
See detailMicro-CT for first line screening of the scaffold material-, cell-and donor-variability on the ectopic bone forming capacity of tissue engineering constructs
Geeroms, Carla; Roberts, Scott; Van Hove, Astrid et al

Conference (2013)

Detailed reference viewed: 1 (1 ULg)
Full Text
Peer Reviewed
See detailMicro-CT-based improvement of geometrical and mechanical controllability of selective laser melted Ti6Al4V porous structures
Van Bael, S.; Kerckhofs, Greet ULg; Moesen, M. et al

in MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2011), 528(24), 7423-7431

Despite the fact that additive manufacturing (AM) techniques allow to manufacture complex porous parts with a controlled architecture, differences can occur between designed and as-produced morphological ... [more ▼]

Despite the fact that additive manufacturing (AM) techniques allow to manufacture complex porous parts with a controlled architecture, differences can occur between designed and as-produced morphological properties. Therefore this study aimed at optimizing the robustness and controllability of the production of porous Ti6Al4V structures using selective laser melting (SLM) by reducing the mismatch between designed and as-produced morphological and mechanical properties in two runs. In the first run, porous Ti6Al4V structures with different pore sizes were designed, manufactured by SLM, analyzed by microfocus X-ray computed tomography (micro-CT) image analysis and compared to the original design. The comparison was based on the following morphological parameters: pore size, strut thickness, porosity, surface area and structure volume. Integration of the mismatch between designed and measured properties into a second run enabled a decrease of the mismatch. For example, for the average pore size the mismatch decreased from 45% to 5%. The demonstrated protocol is furthermore applicable to other 3D structures, properties and production techniques, powder metallurgy, titanium alloys, porous materials, mechanical characterization, tomography. (C) 2011 Elsevier B.V. All rights reserved. [less ▲]

Detailed reference viewed: 12 (1 ULg)
Peer Reviewed
See detailMicro-CT: a powerful tool for the characterization and evaluation of the bone formatting capacity of calcium phosphate–stem cells tissue engineering constructs
Kerckhofs, Greet ULg; Roberts, Scott J.; Wevers, Martine et al

in Abstract book SkyScan User Meeting 2011 (2011)

Detailed reference viewed: 3 (0 ULg)
Full Text
Peer Reviewed
See detailMicro-entreprises in rural areas : redeployment of rurality in Walloon Region
Brulard, Cécile; Burny, Philippe ULg; Dogot, Thomas ULg et al

in 18th European Seminar on Extension Education "Supporting viable rural communities" : proceedings, September 2007 (2007)

Detailed reference viewed: 31 (14 ULg)
Peer Reviewed
See detailMICRO-GIS : A System for Spatial Data Handling with Microcomputer
Donnay, Jean-Paul ULg

in Proceedings of the 1986 ACSM-ASPRS Convention (1986)

Detailed reference viewed: 10 (1 ULg)
See detailMICRO-H2 – Microbiological production of hydrogen: study of microalgal and bacterial processes
Calusinska, Magdalena ULg; Joris, Bernard ULg; Wilmotte, Annick ULg et al

Poster (2011, September 07)

The project MICRO-H2 aims to study and exploit the microbial (bacterial and algal) production of hydrogen (H2). In addition to building a competence centre around the H2 production by microorganisms and ... [more ▼]

The project MICRO-H2 aims to study and exploit the microbial (bacterial and algal) production of hydrogen (H2). In addition to building a competence centre around the H2 production by microorganisms and the molecular monitoring of the processes, this project tries to address two main socio-economic issues. First, transport and many economic activities will be based on hydrogen energy in the near future. Secondly, many researches and technology developments deal with renewable resources. Therefore, a new integrated technology for a sustainable development should be promoted. Photofermentation and dark-fermentation are the most promising ways to produce biohydrogen. The main advantage of the first process is the complete conversion of substrate, if any, to hydrogen. However, present H2-production rates by microalgae remain low. Therefore, a better understanding of the microalgal hydrogen metabolism and rate improvements by genetic engineering are needed. On the other hand, dark-fermentation achieves at present far higher H2-production rates, but improvements are expected through monitoring and optimisation of bacterial diversity and activity. The objectives about bacterial H2 production were to increase knowledge, stability potentialities and investigation skills about the consortia of bacteria involved in bioreactors treating wastewater rich in carbohydrates to produce biohydrogen. The project focused mainly on the study of the potentialities of different consortia, with a focus on Clostridium strains. Concerning the microalgal production of H2, the objectives were to increase knowledge on the metabolic interactions that determine H2 evolution at the cellular level and to produce new strains with increased ability for H2 production in the two-stage process. [less ▲]

Detailed reference viewed: 38 (7 ULg)
Full Text
See detailMicro-informatique et apprentissage des savoirs fondamentaux. L'exemple des coordonnées géographiques.
Merenne-Schoumaker, Bernadette ULg; Mabille, Georges; Kairis, Marie-Anne

in Historiens et Geographes (1987), (313), 769-776

Présentation d'expériences menées dans plusieurs classes du secondaire inférieur afin de travailler l'apprentissage des coordonnées géographiques à l'aide de deux didacticiels que nous avons conçu ... [more ▼]

Présentation d'expériences menées dans plusieurs classes du secondaire inférieur afin de travailler l'apprentissage des coordonnées géographiques à l'aide de deux didacticiels que nous avons conçu : Latitude et Princess [less ▲]

Detailed reference viewed: 20 (0 ULg)
Full Text
See detailMicro-informatique et enseignement de la géographie
Merenne-Schoumaker, Bernadette ULg; Baudot, Yves

in Revue de la Direction Générale de l’Organisation des Etudes (1985), 7

Presentation of research conducted as part of a contract FRFC. Objective of the work: facilitate the introduction of microcomputers in geography classes in secondary education

Detailed reference viewed: 22 (1 ULg)
Full Text
Peer Reviewed
See detailLa micro-informatique et l'enseignement de la géographie : les leçons des expériences anglaises, néerlandaises et belges
Merenne-Schoumaker, Bernadette ULg

in Revue de Géographie de Lyon (1988), 63(2-3), 23-29

Comparison of experiments conducted in Great Britain, Nederland and Belgium to identificate the fields in wich application of micrcomuters to geography teaching is best suited

Detailed reference viewed: 7 (0 ULg)