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  Host-habitat location by the parasitoid, Nasonia vitripennis Walker (Hymenoptera: Pteromalidae).Frederickx, Christine  ; Dekeirsschieter, Jessica ; Verheggen, François et alin Journal of Forensic Sciences (in press) This study investigated the role of odorant cues used during host-habitat location by the generalist parasitoid, Nasonia vitripennis Walker. N vitripennis is a common parasitoid of Dipteran pupae found in ... [more ▼] This study investigated the role of odorant cues used during host-habitat location by the generalist parasitoid, Nasonia vitripennis Walker. N vitripennis is a common parasitoid of Dipteran pupae found in association with decaying carrion. Behavioral assays were used to investigate the host-habitat searching behavior under different scenarios. First, we demonstrated N. vitripennis to be significantly attracted toward odorant cues associated with decaying meat. The biological activity of nine of the volatile molecules constituting the odor of decaying meat were tested on the searching behavior of parasitoid females through two complementary chemoecological approaches: electronantennography (EAG) and olfactometry bioassays. Butanoic acid and butan-1-ol elicited high olfactory responses, but no attraction was induced by these two chemicals. Behavioral assays showed that, among the VOCs tested, methyldisulfanylmethane (DMDS) was the only volatile chemical to induce attraction in N. vitripennis. [less ▲] Detailed reference viewed: 24 (8 ULg) The spatial footprint of the non-ferrous metal industry in LubumbashiVranken, Isabelle ; ; et alin Tropicultura (in press) In the south-eastern part of the Katanga Province (Democratic Republic of the Congo), high concentrations of copper and cobalt are found in the soils of the well-known “Copper Belt”. Due to the dominant ... [more ▼] In the south-eastern part of the Katanga Province (Democratic Republic of the Congo), high concentrations of copper and cobalt are found in the soils of the well-known “Copper Belt”. Due to the dominant south-eastern winds, the metallurgic industry in Lubumbashi has been the source of spatially concentrated atmospheric deposits of non-ferrous metal particles and associated substances in a cone-shaped zone, situated north-west of the metal processing site. The existence of this zone has been evidenced using two different techniques: firstly, by means of landscape metric comparisons of the vegetation and bare soil patterns in two study areas, one inside the pollution cone and one outside; secondly, by means of the theory on city perception developed by Kevin Lynch. Higher fragmentation and lower vegetation presence were observed inside the pollution cone, reflecting the negative impact of atmospheric deposits. Those differences were higher for sites closer to the emission source. Lynch’s approach outlined the negative impact of diverse industrial plants on the perception by the local population. Six pollution districts and several contaminated paths, limits, nodes and polluting landmarks were identified. Citizens even recognize them as part of the collective image of the city. [less ▲] Detailed reference viewed: 42 (5 ULg)8.3 Landfill of Solid WasteRomain, Anne-Claude in Belgiorno, V (Ed.) Odour Impact Assessment Handbook (2013) Detailed reference viewed: 14 (6 ULg)Characterization of sugar beet pectic-derived oligosaccharides obtained by enzymatic hydrolysis.Combo, Agnan Marie Michel ; Aguedo, Mario ; et alin International Journal of Biological Macromolecules (2013), 52(1), 148-156 Detailed reference viewed: 41 (20 ULg) A multiaxial constitutive model for concrete in the fire situation including transient creep and cooling down phasesGernay, Thomas Doctoral thesis (2012) Purpose - The present thesis aims to develop an efficient and reliable multiaxial concrete model for implementation in finite elements softwares dedicated to the analysis of structures in fire. The need ... [more ▼] Purpose - The present thesis aims to develop an efficient and reliable multiaxial concrete model for implementation in finite elements softwares dedicated to the analysis of structures in fire. The need for proper concrete model remains a very challenging task in structural (fire) engineering because of the complexity of the concrete mechanical behavior characterization and the severe requirements for the material models raised by the development of performance-based design. Methodology - The thesis opted for a phenomenological approach for modeling the thermo-mechanical behavior of concrete. The specifications of the model are based on the study of published experimental data of concrete samples tests and on the specific needs related to the applications in structural fire engineering. With these specifications in mind, a state of the art review of concrete models is conducted in order to choose the general theoretical framework that best fits the criteria for the development of the new model. The thesis presents the theoretical development of the model and its numerical implementation in a finite elements software. Numerical simulations of experimental tests are then performed to verify that the model satisfy the specifications. Findings - The combination of elastoplasticity theory and damage theory allows to develop a phenomenological model suitable for concrete behavior modeling within the pragmatic and robust theoretical framework of continuum constitutive models based on smeared crack approach. The state of damage in concrete, assumed isotropic, is modeled by means of a fourth order damage tensor to capture the unilateral effect. When complex performance-based situations are considered, the effect of transient creep strain at high temperature must be taken into account by an explicit term in the strain decomposition. A generic transient creep model is therefore developed based on experimental data and the model is calibrated to yield the same results as the Eurocode implicit model in simple prescriptive situations. The concrete model comprises a limited number of parameters that can be identified by three simple tests; besides, a standard set of values to be used in predictive calculations is clearly defined for these parameters. Numerical simulations can deal with all stress states as the model is developed as fully three-dimensional. A large number of examples highlight the capabilities of the model that range from the modeling of sample tests to the modeling of large scale composite structures developing membrane action. Limitations – Due to the assumption that damage and plasticity are driven by the same internal variables in the model, a limitation appears for capturing the concrete post-peak behavior in highly confined stress states. This assumption allows for reducing the number of parameter but it restrains the domain of applicability of the model; it is suggested to adopt a different approach if the behavior in multiaxial compression at high confinement level has to be accurately captured. Another limitation of the model is related to the localization issue, which is only partly addressed in this work by means of the regularization of the crack energy. Further works should bring a more elaborated response while considering the case of reinforced concrete structures, in which numerous cracks develop. Finally, several simplifying assumptions have been adopted to restrain the scope of the research; for instance, the phenomenon of spalling has not been considered. Practical implications - The thesis includes implications for the development of advanced numerical tools for the simulation of concrete structures at ambient temperature and at high temperature. The use of such advanced tools in the design may lead to significant reduction in the building costs and to improved robustness of the structures. Value – The thesis contributes to fulfil an identified need to make available proper constitutive concrete model for implementation in finite elements softwares dedicated to the analysis of structures in fire. Special care is given to the numerical robustness of the model and to the clear definition of the material parameters as the model is intended to be used by structural (fire) engineers in real applications. [less ▲] Detailed reference viewed: 75 (29 ULg)Les littératures selon Nicolas AncionDemoulin, Laurent E-print/Working paper (2012) Compte rendu du roman de Nicolas Ancion "La Cravate de Simenon" paru dans une collection destinée à l'apprentissage du français. Detailed reference viewed: 19 (0 ULg)The role of TGF-alpha in the resistance to mesothelioma chemotherapyCosta, Chrisostome ; Vandermeers, Fabian ; Reddy, NS Sathyanarayana et alPoster (2012, September 13) Detailed reference viewed: 41 (21 ULg)Study of breast cancer adaptation to anti-angiogenic therapies by molecular imaging on tissue slidesCimino, Jonathan ; Calligaris, David ; Debois, Delphine et alConference (2012, September 04) Breast carcinoma is the most common and second leading cause of cancer mortality in women1. The ␣␣␣␣␣␣␣␣␣␣␣␣ ␣␣␣ ␣␣␣␣ ␣␣␣␣␣␣␣␣␣␣␣␣ ␣␣␣␣␣␣␣␣ ␣␣␣ ␣␣ ␣␣␣␣-‐limiting ... [more ▼] Breast carcinoma is the most common and second leading cause of cancer mortality in women1. The ␣␣␣␣␣␣␣␣␣␣␣␣ ␣␣␣ ␣␣␣␣ ␣␣␣␣␣␣␣␣␣␣␣␣ ␣␣␣␣␣␣␣␣ ␣␣␣ ␣␣ ␣␣␣␣-‐limiting secondary step in tumorigenesis led to extensive pre-‐clinical researches on angiogenesis and finally the approval of VEGF-‐neutralizing antibodies (bevacizumab) and VEGF receptor tyrosine kinase inhibitors (RTKs:sunitinib). The Sunitinib has been used clinically in patients with breast cancer refractory to other therapeutic agents2. Unfortunately, like the cytotoxic therapies, these drugs do not produce lasting effects and resistance to treatment appeared clinically3. Recently, independent laboratories have reported experimental data demonstrating that anti-‐ angiogenic treatments inhibit tumor growth, but also stimulate the formation of lung metastases after treatment discontinuation4. The field of imaging mass spectrometry provides new tools to visualize and study the profiles of proteins and small molecules associated with biomedical problems5. To this aim, we conducted a series of experiments to setup a reproductible model of resistance to sunitinib. The cells MDA-‐MB-‐231 triple negative, from human breast cancer and expressing luciferase are injected subcutaneously into mice RAG1-‐/-‐. The mice were divided into four experimental groups including, on the one hand, control mice treated with placebo (Carboxymethyl cellulose, CMC) sacrificed on day 30 (group 1) or when the tumor reached a volume of 300 mm3 (group 2). On the other hand, Sunitinib-‐treated mice (LC Laboratories, 40mg/kg/day), sacrificed at day 30 (group 3), or when the tumor reached a volume of 300 mm3 (group 4). MALDI mass spectrometry imaging was performed on tissue sections of tumors and organs subsequently colonized by metastases. Matrix sublimation was used to coat tumor sections (14 μm-‐tick) with 1.5 Diaminonaphthalene (1.5 DAN) for lipids analysis and Sinapinic acid (SA) for entire proteins analysis. Ion cartographies were recorded with a Solarix9.4T FTMS instrument for lipids and with an Ultraflex II TOF-‐TOF instrument for entire proteins (BrukerDaltonics, Bremen, Germany) with a spatial resolution of 100 μm. The analysis of differential protein/lipid profiles with high mass accuracy and broadband resolution allows detection of intense signals from lipid families such as Phosphatidylcholine (PC), Triglyceride (TAG), Sphingomyelin (SM) and precise lipid droplets or tumor cells differentiated location in the Sunitinib resistant tumor cells compared to control cells.The protein profiles of the 4 groups of mice show differences in intensity and location, enabling a correlation to inflammatory (highlighted by histological staining) and angiogenic phenomenon. [less ▲] Detailed reference viewed: 35 (5 ULg)Cardiac ultrasound in canine emergencies with a systemic inflammatory response syndromeGommeren, Kris ; ; et alin Proceedings of the 22nd ECVIM-CA Congress (2012, September) Detailed reference viewed: 10 (3 ULg)Semiquantitative bedside evaluation of the microcirculation via sidestream dark field imaging in dogsAllerton, Fergus ; Gommeren, Kris ; et alin Proceedings of the 22nd ECVIM-CA Congress (2012, September) Detailed reference viewed: 13 (2 ULg)Influence of sedatives, anticonvulsants and a negative chronotrope on transcranial doppler ultrasonography; Gommeren, Kris ; et alin Proceedings of the 22nd ECVIM-CA Congress (2012, September) Detailed reference viewed: 12 (2 ULg)Immunopathogenesis of canine sinonasal aspergillosisPeeters, Dominique in Proceedings of the 22nd ECVIM-CA Congress (2012, September) Detailed reference viewed: 10 (2 ULg)Repeatability and reproducibility of transcranial doppler ultrasonography in healthy beagle dogsGommeren, Kris ; ; et alin Proceedings of 22nd ECVIM-CA Congress (2012, September) Detailed reference viewed: 10 (0 ULg)Arbitration of Distribution Disputes Revisited. A Comment on Sebastian International Inc. v Common Market Cosmetics NVWautelet, Patrick in Wautelet, Patrick (Ed.) The Practice of Arbitration. Essays in Honor of Hans van Houtte (2012) This paper revisits the decision of the Belgian Supreme Court in Sebastian International Inc. v Common Market Cosmetics NV. Using the decision as starting point, comments are offered on 1°) the ... [more ▼] This paper revisits the decision of the Belgian Supreme Court in Sebastian International Inc. v Common Market Cosmetics NV. Using the decision as starting point, comments are offered on 1°) the arbitrability of distribution disputes, 2°) which law should apply to the arbitrability of disputes and 3°) what are the practical consequences of the fact that a dispute is deemed to be inarbitrable by the courts of one country. [less ▲] Detailed reference viewed: 26 (0 ULg)AN ALTERNATIVE APPROACH OF THE E-NOSE TRAINING PHASE IN ODOUR IMPACT ASSESSMENT; ; Nicolas, Jacques et alin Del Rosso, Renato (Ed.) Chemical engineering transactions : NOSE2012 International Conference on Environmental Odour (2012, September) Detailed reference viewed: 16 (7 ULg)APPLICATION OF CHEMICAL MASS BALANCE METHODOLOGY TO IDENTIFY THE DIFFERENT SOURCES RESPONSIBLE FOR THE OLFACTORY ANNOYANCE AT A RECEPTOR-SITE; Romain, Anne-Claude ; et alin Del Rosso, Renato (Ed.) Chemical engineering transactions : NOSE2012 International Conference on Environmental Odour (2012, September) Detailed reference viewed: 19 (8 ULg)POTENTIAL OF A NETWORK OF ELECTRONIC NOSES TO ASSESS IN REAL TIME THE ODOUR ANNOYANCE IN THE ENVIRONMENT OF A COMPOST FACILITYNicolas, Jacques ; ; Romain, Anne-Claude et alin Del Rosso, Renato (Ed.) Chemical engineering transactions : NOSE2012 International Conference on Environmental Odour (2012, September) Detailed reference viewed: 15 (5 ULg)Urinary, hematologic and biological screening of 108 healthy adult Dogues de Bordeaux : a breed predisposed to a glomerulonephropathyLavoué, Rachel ; Peeters, Dominique ; et alin Proceedings of the 22nd ECVIM-CA Congress (2012, September) Detailed reference viewed: 11 (3 ULg)Proteomics of aphid salivary proteinsFrancis, Frédéric ; De Pauw, Edwin ; Vandermoten, Sophie et alConference (2012, August) Detailed reference viewed: 20 (4 ULg)Coupling long term database with SWAT and STICS models for testing modles and simulating nitrogen management scenariosDeneufbourg, Mathieu ; ; et alPoster (2012, June 26) Detailed reference viewed: 23 (4 ULg) |
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