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See detailPEB: thermal oriented architectural modeling for building energy efficiency regulations
Leclercq, Pierre ULg; Juchmes, Roland ULg; Delfosse, Vincent ULg et al

Poster (2011)

As part of the overhauling of the building energy efficiency regulations (following European directive 2002/91/CE), the Wallonia and Brussels-Capital Region commissioned the LUCID to develop an optional ... [more ▼]

As part of the overhauling of the building energy efficiency regulations (following European directive 2002/91/CE), the Wallonia and Brussels-Capital Region commissioned the LUCID to develop an optional 3D graphic encoding module to be integrated with the core energy efficiency computation engine developed by Altran Europe. Our contribution consisted mostly in analyzing the target users’ needs and representations (ergonomics, UI, interactions) and implementing a bespoke 3D CAD modeler dedicated to thermal models of buildings taking into account the various geometrical and relational constraints specific to thermal modeling. [less ▲]

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See detailResting-state fMRI activity in tinnitus
Maudoux, Audrey ULg

Poster (2011)

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See detailA Chandra search for low-mass companions of late B-stars in Tr16
Evans, N. R.; DeGioia-Eastwood, K.; Gagné, M. et al

Poster (2011)

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See detailPostglacial pioneer settlement in the Sarvinki area, Eastern Finland : a red ochre grave in Rahakangas 1 site
Simponen, Laija; Mannermaa, Kristiina; Taipale, Noora ULg et al

Poster (2011)

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See detailNew Methodology to detect toxin-GPCR binding by MALDI-TOF Mass Spectrometry
Echterbille, Julien ULg; De Pauw, Edwin ULg; Gilles, Nicolas et al

Poster (2011)

Introduction More than 50 thousands of venomous species are currently indexed in the world. Each of their venoms is composed of 200 to 1000 different toxins which potentially exhibit a high selectivity ... [more ▼]

Introduction More than 50 thousands of venomous species are currently indexed in the world. Each of their venoms is composed of 200 to 1000 different toxins which potentially exhibit a high selectivity for membrane receptors such as ionic channels or G-protein coupled receptors (GPCRs). GPCRs constitute the larger family of receptors since around 800 different kinds of them are knows. GPCRs are the target of around 30% of the current pharmacopeia drugs. Notable examples include Novartis’s Zelnorm, Eli Lilly’s Zyprexa and Schering-Plough’s Clarinex used to treat constipation, schizophrenia and allergies, respectively. Finding new GPCRs ligands appears of prime interest to design new pharmacological tools and potentially discover the drugs of our future. Interestingly, several toxins from venoms have already been described to bind to this particular family of receptor, opening the way to the discovery of new peptide drugs from animal venoms1-2. This work presents a pioneering MALDI-TOF/TOF based strategy to fish new GPCRs ligands from complex mixtures such as venom fractions. Methods The proof of concept of this methodology was built by studying the binding of [Arg8]-vasopressin (AVP) on type 2-vasopressin receptor (V2). Experimentally, fragments of cellular membranes over-expressing V2 receptors were incubated with cone snail’s venom fraction (~30 peptide toxins) doped by a small amount of AVP. After 2 hours incubation, free and bound fractions were carefully purified with a combination of centrifugation and micro column purifications. Samples were finally analyzed with a Bruker Ultraflex II MALDI-TOF/TOF mass spectrometer and the resulting spectra were interpreted with FlexAnalysis (v3.0), BioTools (v3.2) and SequenceEditor (v3.2) bioinformatics’ softwares from Bruker Daltonics. Preliminary data After the incubation of cellular membranes overexpressing V2 GPCR with a complex mixture of peptides doped by AVP, we clearly detect that the only V2 ligand present in the fraction was the AVP. Our result demonstrates the possibility to identify a ligand of GPCRs from a complex peptide mixture, such as venom fractions. Contrary to radiobinding, this approach allows detecting the direct binding of the toxin and does not imply to know a ligand of the studied GPCR before starting the experiments. This opens the way to the deorphanization of receptors (180 orphans GPCRs over 800). Moreover, since the new ligand is detected by mass spectrometry, it is directly identified from the mixture, without additional purification. Its structural characterization can be directly performed by de novo sequencing experiments. The drawback of our approach is the very long (but crucial!) sample preparation as each sample requires 2 purification steps (for both free and bound fraction). The next step of our work will be the automation of the procedure to allow a high-throughput screening of venom fractions on different GPCRs and the discovery of new ligands. Novel aspect GPCR’s ligands discovery by MALDI-TOF/TOF based techniques: a new pharmacological tool. 1 Quinton, L. et al. Isolation and pharmacological characterization of AdTx1, a natural peptide displaying specific insurmountable antagonism of the a1A-adrenoceptor. British Journal of Pharmacology 159, 316-325 (2010). 2 Rouget, C. et al. Identification of a novel snake peptide toxin displaying high affinity and antagonist behaviour for the α2-adrenoceptors. British Journal of Pharmacology 161, 1361-1374, doi:10.1111/j.1476-5381.2010.00966.x (2010). [less ▲]

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See detailULTRASONOGRAPHIC APPEARANCE OF THE CISTERNA CHYLI IN THE DOG
Etienne, Anne-Laure ULg; Cavrenne, Romain ULg; Garcia et al

Poster (2011)

Introduction/Aims The cisterna chyli (CC) is a dilated and bipartite portion of the lymphatic channels coursing intimately along the abdominal aorta in the retroperitoneal space.1 The appearance of the CC ... [more ▼]

Introduction/Aims The cisterna chyli (CC) is a dilated and bipartite portion of the lymphatic channels coursing intimately along the abdominal aorta in the retroperitoneal space.1 The appearance of the CC of the dog has been described on magnetic resonance imaging.2 The aim of this poster is to describe the ultrasonographic appearance of the CC in 2 dogs with chylous ascitis and in 2 healthy dogs. Methods Abdominal ultrasonography was realised with a 7.5MHz microconvex transducer. A right or left lateral dorsal approach was used. The aorta (together with the cranial mesenteric artery in normal dogs) was used as the main landmark to localize the CC. The dogs with chylous ascites were a 4 year old female american cocker spaniel, with immune-mediated hemolytic anemia and thrombocytopenia and a 1 year old, spayed female whippet with recurrent pancreatitis. The 2 healthy dogs were a 7 year old Beagle and a 9 year old Jack Russell. The abdominal ultrasonography was realised within 2 hours after the meal in the healthy dogs. Results The CC was seen as a hypoechoic structure, without detectable flow, dorsal and to the right of the aorta. The CC was easily visible in the 2 dogs with chyloabdomen while it was more difficult to localize in the healthy dogs. The CC was tubular on the longitudinal images. On transverse images, the CC is elliptic or semilunar and may partially surround the aorta. The maximal width of the CC measured on transverse images varied from 2-3mm in the 2 healthy dogs to 4-8mm in the 2 dogs with chyloabdomen. In 3 patients some efferent/afferent lymphatic vessels were seen as thin hypoechoic tubes converging on the CC. Shape and size of the CC in the same animal were seen varying during the same ultrasonography or between different exams. Discussion/Conclusion The CC is visible by ultrasonography in dogs. Its visibility depends on different conditions like disease of the lymphatic system3, quality and distance of the meal. [less ▲]

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See detailDark matter in a SUSY left-right theory
Vicente, Avelino ULg

Poster (2011)

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See detailBioinformatics tools to decrypt pyoverdine biosynthesis in Pseudomonas sp.
Vanvlassenbroeck, Aurélien; Leclère, Valérie; Pupin, Maude et al

Poster (2011)

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See detailCellulase involvement in the cellulose biosynthesis of Pseudomonas stutzeri
Delsaute, Maud ULg; Berlemont, Renaud ULg; Paulus, Virginie et al

Poster (2011)

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See detailInvasive Evaluation of Coronary Arteries with Intermediate Stenosis at Coronary CT Angiography: Prevalence of Significant Findings
GHEKIERE, O.; DEWILDE, W; COOLEN, T et al

Poster (2011)

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See detailIs the PASAT enough to detect working memory problems in MS patients? A comparison with another working memory test
DELRUE, Gaël ULg; MOYANO, Nicolas; JIMENEZ et al

Poster (2011)

We show that the PASAT is not the best test to evaluate working memory in mulitple sclerosis patients.

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See detailBone regeneration using porous titanium particles vs. bovine hydroxyapatite: a sinus lift study in rabbits
LAMBERT, France ULg; LECLOUX, Geoffrey ULg; Léonard, Angélique ULg et al

Poster (2011)

Background: The use of porous titanium particles as space filling biomaterials for intraoral bone regeneration might be of interest because of both the mechanical stability and nonresorbable properties ... [more ▼]

Background: The use of porous titanium particles as space filling biomaterials for intraoral bone regeneration might be of interest because of both the mechanical stability and nonresorbable properties. Titanium particles were recently described for bone regeneration in sinus lifts and in the treatment of periimplantitis. Nevertheless, tissue integration and 3D bone regeneration with titanium particles were poorly explored in these previous reports. Aim: The first objective of this study was to qualitatively and quantitatively assess the bone formation process, particularly the long-term behavior and 3D volume stability of subsinusal bone regeneration, using titanium or bovine hydroxyapatite granules, in a rabbit model. The second objective was to evaluate the effect of the hydration of the BHA particles with a therapeutic concentration of doxycycline solution on the osteogenesis and biomaterial resorption. Methods: Rabbits underwent a double sinus lift procedure using one of three materials: grade 1 porous titanium particles (Ti), bovine hydroxyapatite (BHA) or chemically modified bovine hydroxyapatite (BHATTC). Animals were sacrificed after 1 week, 5 weeks or 6 months. Samples were analyzed using mCT and nondecalcified histology. Results: The materials used in each of the three groups allowed an optimal bone formation; bone quantities and densities were not statistically different between the three groups. At 6 months, more stable 3D volume stability was found with TI and BHATTC (P¼0.0033). At 5 weeks and 6 months, bone to material contact (BMC) corroborating osteoconduction was significantly higher with BHA and BHATTC than with Ti (P < 0.0001). Conclusions and clinical implications: Even though the studied biomaterials displayed different architectures, they are relevant candidates for sinus lift bone augmentation before dental implants because they allow adequate 3D stability and osteogenesis. However, to recommend the clinical use of Ti, both an observation on the drilling effects of Ti particles and clinical trials are needed. [less ▲]

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See detailImpact of the treatment conditions of a formic/acetic acid delignification method on chemical structure and antioxidant activity of beech wood lignin
Simon, Mathilde ULg; Vanderghem, Caroline ULg; Richel, Aurore ULg et al

Poster (2011)

The interest in lignocellulosic substrates is increasing because they are clearly identified for their high potential of development in energy and value-added molecules production. Indeed lignocellulosic ... [more ▼]

The interest in lignocellulosic substrates is increasing because they are clearly identified for their high potential of development in energy and value-added molecules production. Indeed lignocellulosic biomass constitutes a promising resource for a sustainable production of organic compounds and biobased products that could progressively replace molecules from the petrochemical industry. Until now lignocellulosic substrates were mainly used for the valorization of cellulose. Hemicelluloses and lignins were less valorized and often degraded after the process. However, due to their phenolic structure, lignins can be valorized in a lot of high-valued applications like vanillin production, replacement of petrochemical polymers, antioxidants for cosmetics and food industry, resins… In this study, a representative sample of beech wood (Fagus sylvatica L.) was collected in the region of Gaume in Belgium. Beech wood was delignified at atmospheric pressure by an organosolv process using a mixture of formic acid/acetic acid/water. The effect of cooking time and temperature was evaluated on the structure, physico-chemical properties and antioxidant activity of the lignins obtained from the black liquor after treatments. The structural and physico-chemical characteristics of the lignins were investigated with different tools like infrared spectrometry, thermogravimetric analysis, gel permeation chromatography after acetylation of lignins, NMR 1H, 13C and HSQC. The antioxidant activity was assessed by a spectrophotometric method using the α,α-diphenyl-β-picrylhydrazyl radical (DPPH). [less ▲]

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See detailHighly efficient organic/inorganic titania xerogels for photocatalysis applications
Bodson, Céline ULg; Bied, Catherine; Páez Martínez, Carlos ULg et al

Poster (2011)

TiO2 heterogeneous photocatalysis is an attractive technique for the complete destruction of undesirable contaminants either in aqueous or gaseous phase by using solar or artificial light illumination ... [more ▼]

TiO2 heterogeneous photocatalysis is an attractive technique for the complete destruction of undesirable contaminants either in aqueous or gaseous phase by using solar or artificial light illumination. The main drawback of TiO2 is that it can be activated only by UV light because of its large band gap (3.20 eV for anatase). Thus, it would be interesting to sensitize TiO2 to the whole visible region by doping with non-metal atoms such as phosphorus. Furthermore, it was found that the P-doped species could significantly increase the specific surface area of the materials, which consequently exhibit a higher content of surface hydroxyl groups. Upon band gap excitation of TiO2, the photoinduced electrons and positively charged holes can reduce and oxidize the species adsorbed on the TiO2 particles. The high degree of recombination between photogenerated electrons and holes is a major rate-limiting factor controlling the photocatalytic efficiency. Attempts to increase the titania efficiency have been made by doping P-doped TiO2 with metals, such as Ag. In the present study, a sol-gel method is developed to synthesize P-doped TiO2 and P/Ag-codoped xerogels by a cogelation method [1] based on the hydrolysis and the condensation of Ti(OC3H7)4 in the presence of a phosphoryled compound able to complex silver: NH2-(CH2)2-NH-(CH2)2-P(O)-(OC2H5)2, EDAP), in various alcohols. These xerogels are dried at 150°C under vacuum for 24 h, and calcined under air for 5 h at 350°C, 450°C, 550°C and 650°C. The resulting materials were characterized by ICP-AES, TG-DSC, TEM, XRD, nitrogen adsorption-desorption isotherms, FT-IR and diffuse reflectance measurements in the UV/Vis region. To measure the photoactivity of these new hybrid organic/inorganic titania xerogels, all these samples were tested for the degradation of p-nitrophenol under visible light. The titanium, phosphorus and silver contents in xerogels were confirmed by ICP-AES. As expected, theoretical and actual Ti/P molar ratio and Ag contents in xerogels are similar and then after washing with THF for 48 h. These results allow to conclude that EDAP and Ag are well incorporated within the TiO2 matrix: EDAP is anchored in the titania matrix by complexation and cogelation with TTIP [2], whereas silver, first incorporated by complexation through the ethylenediamine fragment of EDAP, is present in the xerogels in the form of nanoparticles. It was found that the phosphor-doped species could significantly increase the surface area of the materials. [2] It is noteworthy that the porosity of these materials is not affected by the addition of silver acetate during the synthesis, a very slight decrease of the specific surface area being observed in all cases. The organic/inorganic hybrid titania materials display very high photocatalytic efficiencies in the degradation of p-nitrophenol compared to pure titania. Deeper investigations concerning the structure of these materials should enable a better understanding of the photocatalytic mechanisms involved with these hybrids and will soon be reported. 1. S. Lambert, K. Y. Tran, G. Arrachart, F. Noville, C. Henrist, C. Bied, J. J. E. Moreau, M. Wong Chi Man, B. Heinrichs, Micropor. Mesopor. Mater. 2008, 115, 609. 2. C.J.Bodson1, S.D. Lambert1, C. Alié1, X. Cattoën2, J-P. Pirard1, C. Bied2, M.Wong Chi Man2, B. Heinrichs1 ,Micropor. Mesopor. Mater. 2010, 134,157 [less ▲]

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See detailDescription of the bone-remodeling pattern after socket preservation procedures in human: a methodological study
LAMBERT, France ULg; VINCENT, Kim ULg; VANHOUTTE, Vanessa ULg et al

Poster (2011)

Background: The bone remodeling after tooth extraction can result in the loss of as much as 50% of the buccal wall and a global crestal reduction in width of 3.87mm according to a recent systematic review ... [more ▼]

Background: The bone remodeling after tooth extraction can result in the loss of as much as 50% of the buccal wall and a global crestal reduction in width of 3.87mm according to a recent systematic review. Multiple surgical protocols using biomaterials are proposed in order to limit the typical postextraction bone resorption. However, because of the heterogeneity of the studies and, more specifically, of the assessment methods, it is difficult to assert the superiority of one technique over another. Aim: The objective of this study was to develop a new radiographic method to assess alveolar bone remodeling after socket preservation procedures. Methods: Sixteen extraction sites (in 14 patients) localized in the upper anterior maxilla were treated with bovine hydroxyapatite (0.25–1mm particles) and a saddled connective tissue graft. A radiographic 3-dimensional assessment of the hard tissues was performed at baseline and at 3 months after the procedure. Standardized horizontal measurements were taken at three corono apical levels ( 2, 5, and 9mm) and at three mesio-diatal level (Mesial, Center, and Distal) in the buccal and palatal aspects. Vertical measurements were also recorded in nine regions over the top of the alveolar crest. Results: Extraction socket-preservation technique assessed in the present study significantly reduced horizontal bone remodeling. The horizontal dimension of the crest decreased by 1.6mm (20%) in the cervical regions ( 2mm level), experienced a moderate decrease of 1mm (12%) at the 5mm level, and experienced a very low decrease of 0.5mm(6%) in the apical ( 8mm) level. The losses were always significantly higher in the buccal than in the palatal aspect. Buccally, the maximal bone remodeling at the cervical level remained below 1mm. Vertical bone resorption was homogeneous and was < 1mm in the nine measured regions. Conclusions and clinical implications: The radiographic measuring methodology proved to be accurate and reproducible. It can be applied in other clinical settings. Moreover, the surgical procedure evaluated in the present study, significantly limits the postextraction buccal bone remodeling compared with the data found in the literature for untreated extraction socket in the aesthetic area. However, a complete inhibition of the bone remodeling was not reached and the authors suggest a surgical technique using a ‘‘saddled’’ connective tissue graft to thicken buccal soft tissue biotype and consequently compensate for cervical bone loss. [less ▲]

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See detailDistribution of Colonic Findings at Virtual Colonoscopy According to Gastrointestinal Symptoms in Almost 10,000 Patients
HOCK, D; OUHADI, R; MATERNE, R et al

Poster (2011)

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See detailPostglacial pioneer settlement in the Sarvinki area, Eastern Finland : environmental and economical setting
Pesonen, Petro; Hertell, Esa; Mannermaa, Kristiina et al

Poster (2011)

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See detailEffect of Chronic confinement stress on growth, survival, blood cortisol and glucose of perch (Perca fluviatilis)
Rougeot, Carole ULg; Tomson, Thomas; Vandecan, Michaël et al

Poster (2011)

Detailed reference viewed: 60 (12 ULg)
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See detailThe influence of affective valence on DRM false memories in younger and older adults
Dehon, Hedwige ULg; Laroi, Frank; Van der Linden, Martial

Poster (2011)

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See detailSynthesis of amonabactins by Aeromonas hydrophila : implication of NRPS of a unique iterative-alternative type
Leclère, Valérie; Rathisamy, Subashkumar; Wathelet, Bernard ULg et al

Poster (2011)

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See detailThe effect of insulin injection on the glucose metabolism of the chicken embryo
Franssens, Lies; Willems, Els; Willemsen, Hilke et al

Poster (2011)

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See detailControl of Polymyxa betae by Bacillus amyloliquefaciens lipopeptides
Desoignies, N.; Schramme, F.; Ongena, Marc ULg et al

Poster (2011)

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See detailThe Influence of aromatic solvents on CuPc blue pigments
Defeyt, Catherine ULg; Vandenabeele, Peter; Lycke, Sylvia et al

Poster (2011)

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See detailDETERMINATION OF TRIFLURALIN RESIDUES IN CULTURED CATFISH AND WATER.
Nguyen Quoc, Thinh; Tran Minh, Phu; Do Thi Thanh, Huong et al

Poster (2011)

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See detailDistribution and composition of organic carbon in the Tana River Basin, (Kenya)
Tamooh, F.; van den Meersche, K.; Borges, Alberto ULg et al

Poster (2011)

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See detailReconstruction of satellite-derived sea surface temperature of the South China Sea in 2003-2009
Huynh, Thi Hong Ngu ULg; Alvera Azcarate, Aïda ULg; Beckers, Jean-Marie ULg

Poster (2011)

The South China Sea (SCS) is a large marginal sea in the tropical region where the percentage of missing data of the daily Advanced Very High Resolution Radiometer (AVHRR) sea surface temperature (SST) is ... [more ▼]

The South China Sea (SCS) is a large marginal sea in the tropical region where the percentage of missing data of the daily Advanced Very High Resolution Radiometer (AVHRR) sea surface temperature (SST) is very high. Here we use a relatively new technique, DINEOF (Data INterpolating Empirical Orthogonal Functions), to reconstruct the SST of the SCS in 2003-2009. Furthermore, a comparison between the reconstructed data and daily Tropical rainfall Measuring Mission Microwave Imager (TMI) SST is implemented. [less ▲]

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See detailOptimization of a formic/acetic acid treatment of beech wood (Fagus sylvatica L.) for delignification
Simon, Mathilde ULg; Richel, Aurore ULg; Vanderghem, Caroline ULg et al

Poster (2011)

Lignin is a promising molecule constituting a renewable alternative to some petrochemical industry products. Lignin is an aromatic cross-linked heteropolymer composed of three phenylpropanoids (p ... [more ▼]

Lignin is a promising molecule constituting a renewable alternative to some petrochemical industry products. Lignin is an aromatic cross-linked heteropolymer composed of three phenylpropanoids (p-hydroxyphenyl, guaiacyl and syringyl units) linked together via radical coupling reactions by specific ether or carbon-carbon bonds. With this phenylpropanoid structure, lignin is a rich resource of biobased products that could find high-valued applications in a lot of different areas like petrochemical polymer reinforcement and replacement, antioxidants, stabilizers, resins and vanillin production... The first challenge of the valorization of lignins is their extraction from raw materials. Lignins can be found in different lignocellulosic substrates like grasses, softwood and hardwood. This extraction process needs the development of suitable biomass treatments, allowing efficient lignin recuperation without degradation. This one could lead to the loss of some interesting properties and so of some valorization possibilities. In this study, beech wood (Fagus sylvatica L.) was collected in the region of Gaume (Belgium). Beech wood particles were delignified at atmospheric pressure by a mixture of formic acid/acetic acid/water. A central composite design and response surface methodology were used for the optimization of treatment parameters for delignification. The optima of two independent variables, namely time (1h30, 3h, 4h30) and temperature (87°C, 97°C, 107°C), were determined on delignification yield, pulp yield, concentration of degradation products (furfural and hydroxymethylfurfural). Moreover, the impact of these two variables on the amount of residual linkages between phenylpropanoid units was evaluated by semi-quantitative bidimensional nuclear magnetic resonance spectroscopy (NMR-HSQC). Our results highlight that the delignification yields increase when cooking time and temperature are elevated. Nevertheless, under these conditions, pulp yield decreases as hydrolysis of hemicelluloses and cellulose occurs. The hydrolysates of carbohydrates (free sugars or oligosaccharides) are contained in the black liquor. At elevated temperature and time, the amount of degradation products in the black liquor is increased. [less ▲]

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See detailGait feature extraction in Parkinson's disease using low-cost accelerometers
Stamatakis, Julien; Cremers, Julien ULg; Maquet, Didier ULg et al

Poster (2011)

The clinical hallmarks of Parkinson’s disease (PD) are movement poverty and slowness (i.e. bradykinesia), muscle rigidity, limb tremor or gait disturbances. Parkinson’s gait include slowness, shuffling ... [more ▼]

The clinical hallmarks of Parkinson’s disease (PD) are movement poverty and slowness (i.e. bradykinesia), muscle rigidity, limb tremor or gait disturbances. Parkinson’s gait include slowness, shuffling, short steps, freezing of gait (FoG) and/or asymmetries in gait. There are currently no validated clinical instruments or device that allow a full characterization of gait disturbances in PD. As a step towards this goal, a four accelerometer-based system is proposed to increase the number of parameters that can be extracted to characterize parkinsonian gait disturbances such as FoG or gait asymmetries. After developing the hardware, an algorithm has been developed, that automatically epoched the signals on a stride-by-stride basis and quantified, among others, the gait velocity, the stride time,the stance and swing phases, the single and double support phases or the maximum acceleration at toe-off, as validated by visual inspection of video recordings during the task. The results obtained in a PD patient and an healthy volunteer are presented. The FoG detection will be improved using time-frequency analysis and the system is about to be validated with a state-of-the-art 3D movement analysis system. [less ▲]

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See detailIdentification and characterization of novel galectin-9 splice variants in endothelial cells
Heusschen, Roy ULg; De Bree, Martijn; Griffioen, Arjan et al

Poster (2011)

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See detailUne thérapie destinée aux patients schizophrènes - Self-Awareness Therapy (SAT): Résultats préliminaires
Boulanger, Marie ULg; Pauly, Marc; Nachtergael, Hilde et al

Poster (2011)

Objective: Autonoetic awareness enables to mentally relive personal events in memory to be aware of one’s own experiences across subjective time and so to have a feeling of individuality and self ... [more ▼]

Objective: Autonoetic awareness enables to mentally relive personal events in memory to be aware of one’s own experiences across subjective time and so to have a feeling of individuality and self-direction. It is intimately associated with our awareness of ourselves as persons with a past and a future. Autonoetic awareness thereof contributes to construction of our identity by the recovery of past events, particularly specific events, and the imagination of future events. According to Danion’s theoretical model (2001), autonoetic awareness impairment is at the heart of schizophrenia. This deficit should depend on defective associations between separate aspects of the events during the recall and therefore, it is associated with a reduction in accessing specific information in autobiographical memory (AM). This impairment should explain identity perturbation, cognitive deficits, negative and positive symptomatology present in schizophrenia. Supporting this model, the present study evaluates the effect of a cognitive and behavioural intervention called Self-Awareness Therapy (SAT) on autonoetic awareness, AM and the capacity to imagine oneself in the future, in schizophrenia patients. Method: Fifteen patients with schizophrenia participated to SAT and, 8 patients took part in the Integrative Program Therapy (IPT) of Brenner. Before and after therapy, patients were asked to complete questionnaires to evaluate the autonoetic awareness, AM, projection into the future as well as affective and symptomatology scales. Results: For SAT, the participants reported more specific past and future events after than before the remediation therapy. Furthermore, patients reported significantly less depressive and anxiety symptoms as well as less negative symptoms after compared before the SAT. For IPT, no significant differences emerged. Discussion: These results are in line with previous study (Blairy et al., 2008) and support the notion that, in schizophrenia the retrieving of past specifics memories and projection into the future can be improved. La conscience autonoétique (CA) nous permet de revivre mentalement des évènements personnellement vécus, d’en prendre conscience à travers un temps subjectif et de ressentir un sentiment d’individualité. Elle contribue à la construction de notre identité via la récupération d’évènements passés, particulièrement les évènements spécifiques, et l’imagination d’évènements futurs. Selon le modèle de Danion (2001), une perturbation au niveau de la CA serait au cœur de la schizophrénie. Celle-ci résulterait d’un relâchement des associations entre les différents éléments d’un évènement lors du rappel et dés lors, serait associée à une réduction de l’accès aux informations spécifiques en mémoire autobiographique. Cette perturbation pourrait expliquer les troubles de l’identité, les déficits cognitifs ainsi que la symptomatologie présents dans la schizophrénie. Afin de remédier à ces déficits, nous avons élaboré une intervention cognitive et comportementale, destinée à des patients schizophrènes, qui s’appuie sur ce modèle. Cette étude présente les résultats préliminaires de la SAT en la comparant au 1er module du programme IPT. [less ▲]

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See detailIsotopic Composition and sources of Organic Carbon Pools within the Tana River Basin, (Kenya)
Tamooh, F.; Van Den Meersche, K.; Borges, Alberto ULg et al

Poster (2011)

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See detailUsing putative anti-auxins to improve somatic embryo maturation of Abies nordmanniana
Tahiri, Abdelghani ULg; Misson, Jean-Pierre; Kevers, Claire et al

Poster (2011)

In Belgium, the culture of Nordmann fir (Abies nordmanniana) is mainly located in Wallonia region. The planted area is estimated in average at 5000 ha  that annualy produce some 4 million Christmas trees ... [more ▼]

In Belgium, the culture of Nordmann fir (Abies nordmanniana) is mainly located in Wallonia region. The planted area is estimated in average at 5000 ha  that annualy produce some 4 million Christmas trees destined in priority to the export market. In vitro propagation by somatic embryogenesis is considered as an alternative method to seedlings for producing homogeneous and orthotropic trees on a large scale. Currently, the performances of the somatic embryo (SE) maturation is still insufficient to consider any commercial application of the technology. In this way , the effect of three substances  (2,3,5-triiodobenzoïque acid  as TIBA, 2 - (p-chlorophenoxy)-2-methylpropionic acids as PCIB, p-hydroxbenzoïque as PHBA)  reported as ''anti-auxins'' have been tested with three embryogenic lines on the formation and maturation of normal somatic embryos. [less ▲]

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See detailMesure de la lordose thoracique du porc : méthode centroïde versus méthode de Cobb
Van Cauwenberge, H; Georis, P; Busoni, Valeria ULg et al

Poster (2011)

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See detailMacropinocytosis of human papillomaviruses in natural killer cells via CD16 induces cytotoxic granule exocytosis and cytokine secretion
Renoux, V; Langers, I; Clémenceau, B et al

Poster (2011)

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See detailCaractérisation des composés volatils des huiles d’olive produites dans des coopératives de la région orientale du Maroc
Tanouti, K.; Serghini-Caid, H.; Sindic, Marianne ULg et al

Poster (2011)

L'objectif principal de cette étude est de faire progresser nos connaissances sur le profil volatil des huiles d’olive produite dans les régions du Maroc oriental. L’identification des composés volatils des ... [more ▼]

L'objectif principal de cette étude est de faire progresser nos connaissances sur le profil volatil des huiles d’olive produite dans les régions du Maroc oriental. L’identification des composés volatils des échantillons d’huiles d’olive provenant des coopératives de la région orientale du Maroc et la comparaison aux profils de volatils d’huiles européennes a été réalisée on utilisant la méthode de la microextraction en phase solide (SPME) couplée à la GC/MS. [less ▲]

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See detailThe promotive impact of high temperature on flowering in root chicory (Cichorium intybus L.)
Mathieu, Anne-Sophie; Vandoorne, Bertrand; Quinet, Muriel et al

Poster (2011)

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See detailAn investigation of the relationships between foot conformation and distal interphalangeal joint effusion in young warmblood horses at the beginning of their training
Cubeddu, Francesca; Bastianacci, Valentina; Verwilghen, Denis et al

Poster (2011)

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See detailThick and crack-free nanocrystalline mesoporous TiO2 films obtained by capillary coating from aqueous solutions
Krins, Natacha ULg; Faustini, Marco; Louis, Benjamin et al

Poster (2011)

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See detailConstruction and validation of a new perceptual priming task: The contrasted word task
Geurten, Marie ULg; Meulemans, Thierry ULg

Poster (2011)

In clinical neuropsychology, different rehabilitation techniques – e.g., vanishing cues, spaced retrieval, errorless learning – developed for patients with memory impairments are considered to make use of ... [more ▼]

In clinical neuropsychology, different rehabilitation techniques – e.g., vanishing cues, spaced retrieval, errorless learning – developed for patients with memory impairments are considered to make use of the preserved implicit memory abilities shown by these patients, and notably the perceptual priming effects (Harrison et al., 2007). It might be therefore important for clinician neuropsychologists to determine whether these abilities are preserved or not in their patients. However, and quite surprisingly, assessment tools aimed at assessing implicit memory abilities in brain damaged patients are lacking. The aim of this study was to build and validate a new perceptual priming task – the contrasted word task – which could be used by neuropsychologists in their clinical practice. Seventy-two young healthy participants were included in this study, and were administered the contrasted word task in which 60 words counterbalanced in 2 orders and 3 types of priming (Visual; Auditory; New) emerged gradually from a white background on a computer screen. Subjects were asked to press the response key when they thought they had recognized the word. Results show a perceptual priming effect which is specific to the exposure modality (i.e., no inter-modality transfer), proving the efficacy of the contrasted word task to highlight a facilitated identification for words that were shown previously, and confirming the perceptual specificity of the priming effect (Schacter, 1992). [less ▲]

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See detailThe influence of aromatic solvents on CuPC blue pigments in oil paintings
Defeyt, Catherine ULg; Wijnberg, Louise; Verbeeck, Muriel ULg et al

Poster (2011)

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See detailEtude des interactions membranaires de dérivés de l’acide glucuronique par calorimétrie à titrage isotherme
Laurent, Pascal ULg; Razafindralambo, Hary ULg; Paquot, Michel ULg

Poster (2011)

Dans le cadre de la valorisation de la biomasse et des glucides provenant de l’hydrolyse de matières premières renouvelables, différents dérivés d’acides uroniques ont été synthétisés en vue d’évaluer ... [more ▼]

Dans le cadre de la valorisation de la biomasse et des glucides provenant de l’hydrolyse de matières premières renouvelables, différents dérivés d’acides uroniques ont été synthétisés en vue d’évaluer leurs propriétés en tant qu’agents tensioactifs biocompatibles et biodégradables. Une nouvelle stratégie de synthèse assistée par micro-ondes, efficace et respectueuse de l'environnement, a par ailleurs permis de synthétiser quantitativement différentes D-glucofuranosidurono-6,3-lactones monosubstituées hydrosolubles au départ d'acide D-glucuronique non protégé en utilisant un catalyseur acide supporté. Ces lactones appartiennent à la famille des glycosurfactants non-ioniques dont les applications couvrent un vaste domaine, aussi bien dans l’industrie pharmaceutique, cosmétique ou alimentaire. Une première approche en vue d’évaluer leurs activités biologiques consiste en l’étude des paramètres d’interactions moléculaires de ces lactones vis-à-vis d’une membrane biologique modèle (1-palmitoyl-2-oleyl-sn-glycerol-3-phosphatidylcholine) par calorimétrie à titrage isotherme (Isothermal Titration Calorimetry – ITC). [less ▲]

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See detailSeed dispersal by western lowland gorillas (G. g. gorilla) in south east Cameroon
Petre, Charles-Albert ULg; Tagg, Nikki; Beudels-Jamar, Roseline et al

Poster (2011)

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See detailExpansion of the Magdalenian in Northwest Europe
Miller, Rebecca ULg; Noiret, Pierre ULg

Poster (2011)

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See detailCT Peritoneography: Normal Anatomy of the Peritoneal Cavity and Implications for Diseases Assessment
OUHADI; MATERNE, R; GHEKIERE, O et al

Poster (2011)

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See detailEffects of environmental factors on yield and milking number in dairy cows milked by an automatic system located in pasture
Dufrasne, Isabelle ULg; Robaye, Vincent ULg; Knapp, Emilie ULg et al

Poster (2011)

Nowadays, farmers have to manage larger herds but want, at the same time, benefit from a normal social life. The milking robot can bring solutions. Its use can reduce physical labour and allow flexibility ... [more ▼]

Nowadays, farmers have to manage larger herds but want, at the same time, benefit from a normal social life. The milking robot can bring solutions. Its use can reduce physical labour and allow flexibility. This technology results in a reduction in grazing even through grazing appears as a natural practice which is appreciated by the consumers. This project aims to develop strategies to use milking robots in pasture in order to benefit from advantages regarding feeding costs as well as animal welfare and health. It aims to study the effects of grass height, animal, days in milk, rotation cycle number and distance from grazed paddocks on daily milk yield and milking number of grazed cows. [less ▲]

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See detailMacroH2A regulates the commitment of adult and embryonic stem cells to differentation
Creppe, Catherine ULg; Cantariño, N; Janich, P et al

Poster (2011)

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See detailLe Magdalénien dans le Nord-Ouest de l'Europe
Miller, Rebecca ULg; Noiret, Pierre ULg

Poster (2011)

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See detailAn overview of the aims and plans of an ISSI Team: Investigating the Dynamics of Planetary Magnetotails
Jackman, C.; Andre, N.; Arridge, C. et al

Poster (2011)

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See detailProduction subjective de rêve en milieu carcéral : une hypothèse adaptative
Englebert, Jérôme ULg; Gauthier, Jean-Marie ULg; Jacquemart, Catherine

Poster (2011)

Une étude sur le rêve n’est pas sans poser plusieurs questions épistémologiques et méthodologiques majeures. La première d’entre elles tient à l’essence même du rêve qui est un objet d’étude particulier ... [more ▼]

Une étude sur le rêve n’est pas sans poser plusieurs questions épistémologiques et méthodologiques majeures. La première d’entre elles tient à l’essence même du rêve qui est un objet d’étude particulier, étant strictement subjectif et difficilement objectivable. Le rêve n’existe dans la vie consciente qu’au passé ; il a une conscience uniquement rétrospective. Il existe donc un décalage temporel entre l’activité onirique et le discours sur le rêve. Ce hiatus temporel condamne donc le rêve à nous échapper dans sa finitude et pousse le chercheur à capituler face à la connaissance ultime et globale du monde imaginaire de l’individu. L’étude que nous avons réalisée se veut d’inspiration phénoménologique. Nous avons administré un questionnaire (questionnaire élaboré sous la supervision d’un collège d’experts travaillant en milieu carcéral) à une population de 48 détenus (43 hommes et 5 femmes) et à une population contrôle (appariée pour l’âge et le niveau d’étude). Le questionnaire était scindé en deux parties pour les détenus (rapport aux rêves avant l’enfermement [Gd.0] / rapport aux rêves maintenant [Gd.1]) et celui pour la population contrôle ne comprenait qu’une partie (rapport aux rêves maintenant [Gc]). Enfin, nous avons isolé trois groupes au sein de la population carcérale : Cp : Courte peine effectuée (maximum 90 jours), MP : Moyenne peine effectuée (plus de 90 jours et maximum 2 ans), LP : Longue peine effectuée (plus de 2 ans). Les résultats, qu’il conviendra de discuter dans le détail, mettent en évidence que l’activité onirique serait un mécanisme que le détenu utilise pour s’adapter à l’univers carcéral (la fréquence subjective de rêve et l’intérêt porté à ses rêves sont significativement plus importants pour le Gd.1 que le Gd.0 et le Gc). Mais ce constat tend à diminuer en fonction de la durée de la peine (au-delà de 2 ans d’enfermement [LP]). Nous pouvons expliquer cette diminution significative par un effet d’habituation (le rêve aurait permis un retour à une homéostasie psychique suffisante) ou par une abrasion du mécanisme. En effet, le rêve ne procurerait aucune modification dans le réel puisque le quotidien de l’enfermement reste le même. Privée de boucle de rétroaction, la fonction adaptative du rêve s’essoufflerait. [less ▲]

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See detailDry Season Carbon Dynamics in Savannah Grassland and Rainforest Dominated River Basins of Madagascar
Marwick, T.; van Acker, K.; Darchambeau, François ULg et al

Poster (2011)

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See detailAnalyses biophysiques des interactions peptide-monocouches à l’interface air-eau
Nasir, Mehmet Nail ULg; Benichou, Emmanuel; Brevet, Pierre-François et al

Poster (2011)

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Peer Reviewed
See detailVariability of insulin sensitivity for diabetics and non-diabetics during the first 3 days of ICU stay
Pretty, Christopher G.; Le Compte, Aaron; PREISER, Jean-Charles ULg et al

Poster (2011)

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