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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 ▲]

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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 ▲]

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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)

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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)

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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)

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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 ▲]

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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)

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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)

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See detailMICRO-GIS : A System for Spatial Data Handling with Microcomputer
Donnay, Jean-Paul ULg

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

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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 ▲]

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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 ▲]

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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

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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

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See detailLa micro-informatique et l'enseignement de la géographie
Merenne-Schoumaker, Bernadette ULg; Mabille, Georges

in G.E.O. (1987), (22 (numéro spécial)), 129

Premier ouvrage de synthèse en langue française relatif à l'introduction de la micro-informatique dans les cours de géographie de l'enseignement secondaire. Quatre grandes parties : 1. Le micro-ordinateur ... [more ▼]

Premier ouvrage de synthèse en langue française relatif à l'introduction de la micro-informatique dans les cours de géographie de l'enseignement secondaire. Quatre grandes parties : 1. Le micro-ordinateur et l'enseignement; 2. Les potentialités du micro-ordinateur; 3. Trois grands groupes d'applications privilégiées en géographie; 4. Comment élaborer un didacticiel et l'évaluer? [less ▲]

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See detailMicro-macro analysis of steel sheet behaviour in finite element simulations. Application to deep-drawing process.
Duchene, Laurent ULg; Godinas, A.; Cescotto, Serge ULg et al

in Journal de Physique IV (2003), 105

This paper presents a constitutive law based on taylor's model implemented in our non-linear finite element code LAGAMINE. The yield locus is only locally described and a particular interpolation method ... [more ▼]

This paper presents a constitutive law based on taylor's model implemented in our non-linear finite element code LAGAMINE. The yield locus is only locally described and a particular interpolation method has been developed. This local yield locus model uses a discrete representation of the material's texture. The interpolation method is presented and a deep-drawing application is simulated in order to show up the influence of the texture evolution during forming processes. [less ▲]

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See detailMicro-macro analysis of steel sheet behaviour in finite element simulations. Application to deep-drawing process.
Duchene, Laurent ULg; Godinas, A.; Cescotto, Serge ULg et al

in Cescotto, Serge (Ed.) Proceedings of the Sixth European Mechanics of Materials Conference (EMMC6) Non Linear Mechanics of Anisotropic Materials (2002, September)

This paper presents a constitutive law based on Taylor’s model implemented in our non-linear finite element code LAGAMINE. The yield locus is only locally described and a particular interpolation method ... [more ▼]

This paper presents a constitutive law based on Taylor’s model implemented in our non-linear finite element code LAGAMINE. The yield locus is only locally described and a particular interpolation method has been developed. This local yield locus model uses a discrete representation of the material’s texture. The interpolation method is presented and a deep-drawing application is simulated in order to show up the influence of the texture evolution during forming processes. [less ▲]

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See detailMicro-macro mechanical modeling of bone-implant interface by means of the homogenization theory
Amor, Nadia; Van Cleynenbreugel, Tim; Geris, Liesbet ULg et al

Poster (2006, December)

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See detailA Micro-Macroapproach to Predict Stiction due to Surface Contact in Microelectromechanical Systems
Wu, Ling ULg; Noels, Ludovic ULg; Rochus, Véronique et al

in IEEE/ASME Journal of Microelectromechanical Systems (2011), 20(4), 976-990

Stiction, which results from contact between surfaces, is a major failure mode in micro electro-mechanical systems (MEMS). Indeed microscopic structures tend to adhere to each other when their surfaces ... [more ▼]

Stiction, which results from contact between surfaces, is a major failure mode in micro electro-mechanical systems (MEMS). Indeed microscopic structures tend to adhere to each other when their surfaces enter into contact and when the restoring forces are unable to overcome the interfacial forces. Since incidental contacts cannot be completely excluded and since contacts between moving parts can be part of the normal operation of some types of MEMS, stiction prediction is an important consideration when designing micro and nano-devices. In this paper a micro-macro multi-scale approach is developed in order to predict possible stiction. At the lower scale, the unloading adhesive contact-distance curves of two interacting rough surfaces are established based on a previously presented model [L. Wu et al., J. Appl. Phys. 106, 113502, 2009]. In this model, dry conditions are assumed and only the van der Waals forces as adhesion source are accounted for. The resulting unloading adhesive contact-distance curves are dependant on the material and on surface properties, such as, elastic modulus, surface energy and on the rough surfaces topography parameters; the standard deviation of asperity heights and the asperities density. At the higher scale, a finite element analysis is considered to determine the residual cantilever beam configuration due to the adhesive forces once contact happened. Toward this end, the adhesive contact-distance curve computed previously is integrated on the surface of the finite elements as a contact law. Effects of design parameters can then be studied for given material and surface properties. [less ▲]

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