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See detailLes matériaux intelligents: pièces à porosité contrôlée en acier inoxydable fabriquées par rapidprototyping
Verlee, Bruno; Dormal, Thierry ULg; Lecomte-Beckers, Jacqueline ULg

Scientific conference (2011, May 24)

Les techniques additives offrent la possibilité de fabriquer des géométries complexes avec des fonctionnalités intégrées spécifiques à l’application visée. L’impression 3D de poudre métallique est une ... [more ▼]

Les techniques additives offrent la possibilité de fabriquer des géométries complexes avec des fonctionnalités intégrées spécifiques à l’application visée. L’impression 3D de poudre métallique est une technique additive procédant en 2 étapes : une pièce verte est d’abord construite couche par couche par impression d’un liant liquide sur le lit de poudre, ensuite cette pièce verte est déliantée et frittée. Comme le frittage se déroule séparément de la mise en forme, l’impression 3D est une des seules techniques additives permettant la fabrication de pièces poreuses, comme par exemple des filtres ou autres composants perméables aux fluides. En jouant sur les différents paramètres du procédé, il est possible de faire varier les caractéristiques poreuses de la pièce finale. La première partie de l’exposé mettra en évidence les effets sur les propriétés finales de paramètres comme la granulométrie de la poudre utilisée, la température et le temps de frittage. La deuxième partie de l’exposé traitera de la fabrication de pièces par impression 3D au départ de mélanges bimodaux de poudre. Le comportement au frittage sera analysé en fonction de la composition du mélange et de sa compacité initiale. Les résultats seront comparés à des modèles trouvés dans la littérature. [less ▲]

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See detailMatériaux manganates CMR… la voie vers une nouvelle génération de capteurs inductifs ?
Vanderbemden, Philippe ULg; Vertruyen, Bénédicte ULg

in Bulletin Scientifique de l'Association des Ingénieurs Electriciens sortis de l'Institut Electrotechnique Montefiore (2001), 4

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See detailMatériaux médicaux implantables : le point aujourd’hui
Grandfils, Christian ULg

Conference (2013, March 19)

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See detailMatériaux métalliques pour Applications aérospatiales
Lecomte-Beckers, Jacqueline ULg

Learning material (1997)

Propriétés exigées en fonction des sollicitations, température, environnement. Fluage. Fatigue. Corrosion. Mécanismes de durcissement : substitution, précipitation, écrouissage. Conditions particulières d ... [more ▼]

Propriétés exigées en fonction des sollicitations, température, environnement. Fluage. Fatigue. Corrosion. Mécanismes de durcissement : substitution, précipitation, écrouissage. Conditions particulières d'élaboration (vide, électrodes consommables, ESR, etc) et fabrication (solidification dirigée, monocristaux, métallurgie des poudres). Etude des alliages et métaux réfractaires : aciers à haute résistance, superalliages de nickel, cobalt, fer. Molybdène, tantale, niobium, cermets. Alliages légers : aluminium, titane, magnésium. Composites à matrice métallique. Revêtements réfractaires et anti-corrosion. [less ▲]

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See detailMatériaux métalliques spéciaux
Lecomte-Beckers, Jacqueline ULg

Learning material (1993)

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See detailMatériaux pour enseigner l'histoire des femmes
Jadoulle, Jean-Louis ULg

in Histoire et Enseignement : Bulletin (1992), 42e année(n°3), 21-23

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See detailMatériaux pour une histoire quantitative de la pharmacopée présalernitaine
Opsomer, Carmélia ULg; Binard, Marc ULg

in Archives et bibliothèques de Belgique (1989, October), 34

Depuis 1985, la totalité des recettes médicales latines antérieures à l'Ecole de Salerne se trouve enregistrée sur ordinateur à l'université de Liège. Ce Thesaurus praesalernitanus est un des volets du ... [more ▼]

Depuis 1985, la totalité des recettes médicales latines antérieures à l'Ecole de Salerne se trouve enregistrée sur ordinateur à l'université de Liège. Ce Thesaurus praesalernitanus est un des volets du projet THEOREMA. mené conjointement par le Centre d'Histoire des Sciences et des Techniques, du Professeur Robert Halleux, et le Centre Informatique de Philosophie et Lettres (CIPL), de l'Université de Liège. THEOREMA vise à rassembler l'ensemble des médecines traditionnelles d'Europe en une base de données informatisée, accessible au médecin, au pharmacologue, à l'ethnologue, à l'historien, au lexicographe. Cette banque de données contient aussi une synonymie complète, des listes de maladies, des succédanés, des modes d'application, des auteurs, des noms de compositions. L'ensemble des recettes françaises du moyen âge et les thérapeutiques populaires de Wallonie sont également enregistrées sur ordinateur. Projet à vocation internationale, THEOREMA s'interconnecte à d'autres bases de données, comme AYURBASE de Guy Mazars pour la médecine indienne, et NEMOBASE de José Dos Santos pour les recettes populaires du Languedoc. [less ▲]

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See detailLe matériel céramique troisième millénaire de Tell Ashara-Terqa, Chantier F (campagnes TQ18 à TQ29) - Titre provisoire
Mas, Juliette ULg

Book published by Peeters (in press)

Ce volume constitue la publication finale du matériel céramique daté du IIIème millénaire av. J.-C. découvert sur le site de Terqa lors des campagnes 18 à 29. Il présente la typologie qui a été bâtie pour ... [more ▼]

Ce volume constitue la publication finale du matériel céramique daté du IIIème millénaire av. J.-C. découvert sur le site de Terqa lors des campagnes 18 à 29. Il présente la typologie qui a été bâtie pour classer l’assemblage de Terqa (un corpus de plus de 800 pots ou profils complets), ainsi qu’une analyse détaillée du matériel, de la chronostratigraphie qu’il a été possible d’affiner grâce à cette étude, et enfin, les réflexions sur son insertion dans la région. En effet, le site de Terqa, situé dans la partie Sud du Moyen-Euphrate, profite d’une position clé à cheval entre deux mondes : la Haute-Mésopotamie et la Mésopotamie centrale. Au terme de cette étude, il est apparu que le site de Terqa s’insère dans la province céramique de Mésopotamie centrale, mais qu’il a néanmoins entretenu des liens très étroits avec la région du Haut-Euphrate syrien, comme en témoignent les nombreuses importations provenant de cette région et découvertes à Terqa. [less ▲]

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See detailMatériel d'artiste et pratiques d'atelier : les dessins de Lambert Lombard et de son entourage
Oger, Cécile ULg; Allart, Dominique ULg

in Balis, Arnout; Huvenne, Paul; Lambrechts, Jeanine (Eds.) et al Florissant. Bijdragen tot de kunstgeschiedenis der Nederlanden (15de-17de eeuw). Liber Amicorum Carl Van de Velde (2005)

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See detailMatériel et méthode de la constitution des valeurs de référence
WANG, François-Charles ULg

in Neurophysiologie Clinique = Clinical Neurophysiology (2006)

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See detailMaternal Blood Serum and Plasma Human Tumor-Associated Antigen RCAS1 During the Course of Uncomplicated Pregnancies: A Prospective Study.
Tskitishvili, Ekaterine ULg; Sharentuya, Namuxila; Tsubouchi, Hiroaki et al

in American Journal of Reproductive Immunology (2010), 64(3), 218-24

Citation Tskitishvili E, Sharentuya N, Tsubouchi H, Kinugasa-Taniguchi Y, Kanagawa T, Shimoya K, Tomimatsu T, Kimura T. Maternal blood serum and plasma human tumor-associated antigen RCAS1 during the ... [more ▼]

Citation Tskitishvili E, Sharentuya N, Tsubouchi H, Kinugasa-Taniguchi Y, Kanagawa T, Shimoya K, Tomimatsu T, Kimura T. Maternal blood serum and plasma human tumor-associated antigen RCAS1 during the course of uncomplicated pregnancies: a prospective study. Am J Reprod Immunol 2010; 64: 218-224 Problem We aimed to investigate the expression of the tumor-associated RCAS1 protein in maternal blood of uncomplicated pregnancies. Method of study Maternal blood was obtained from women with uncomplicated pregnancies (N = 43) at 11-13, 20-22, 32-34, 37-38 weeks of gestation, and immediately after delivery. Serum RCAS1 concentration was studied by ELISA, and plasma mRNA was subjected to real-time (RT)-PCR. Results Serum RCAS1 protein concentration was significantly up-regulated at 11-13 and 20-22 weeks than that at 32-34 weeks and after delivery. RCAS1 mRNA level was significantly increased at 11-13 weeks than that at 37-38 weeks. A significant positive correlation was defined between RCAS1 serum concentration at 11-13 weeks and gestational age at delivery and that between plasma RCAS1 mRNA levels at 37-38 weeks and umbilical cord blood base excess. A significant negative correlation was found between RCAS1 serum concentration at 37-38 weeks and umbilical cord blood pH at delivery. Conclusions RCAS1 protein might have importance in the development of uncomplicated pregnancies and for the prediction of pregnancy outcome. [less ▲]

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See detailMaternal cardiopulmonary resuscitation
Brichant, Jean-François ULg

Conference (2006, May 20)

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See detailMaternal dietary n-3 fatty acids affect yolk and liver composition in broiler progeny
Koppenol, Astrid; Delezie, Evelyne; Wang, Yufeng et al

Scientific conference (2012)

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See detailMaternal plasma soluble endoglin at 11-13 weeks's gestation in pre-eclampsia
Foidart, Jean-Michel ULg; Munaut, Carine ULg; Chantraine, Frédéric ULg et al

in Ultrasound in Obstetrics & Gynecology (2010), 35(6), 680-7

Objectives: To examine the performance of screening for preeclampsia (PE) by a combination of maternal factors, soluble endoglin (sEng), pregnancy associated plasma protein A (PAPP-A), placental growth ... [more ▼]

Objectives: To examine the performance of screening for preeclampsia (PE) by a combination of maternal factors, soluble endoglin (sEng), pregnancy associated plasma protein A (PAPP-A), placental growth factor (PlGF) and uterine artery lowest pulsatibility index (L-PI) at 11-13 weeks of gestation. Methods: Uterine artery L-PI, sEng, PAPP-A and PlGF were measured at 11-13 weeks in 90 singleton pregnancies that subsequently developed PE, including 30 that required delivery before 34 weeks (early-PE) and 60 with late-PE, and 180 unaffected controls. Screening performance for PE by maternal factors, sEng, PAPP-A, PlGF and uterine artery L-PI and their combinations was determined. Results: In early-PE, compared to controls, plasma sEng and uterine L-PI were significantly increased and serum PAPP-A and PlGF were decreased. In late-PE, compared to controls, serum PlGF was decreased and uterine L-PI was increased but plasma sEng and serum PAPP-A were not significantly different. In screening for early-PE, the detection rate at a 10% false positive rate was 46.7% for sEng alone and 96.3% for a combination of maternal factors, sEng, PlGF and uterine artery L-PI. Conclusions: Effective screening for early-PE can be provided by a combination of maternal factors, sEng, PlGF and uterine artery L-PI at 11-13 weeks. [less ▲]

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See detailMaternal plasma soluble fms-like tyrosine kinase-1 and free vascular endothelial growth factor at 11 to 13 weeks of gestation in preeclampsia.
Akolekar, R.; De Cruz, J.; Foidart, Jean-Michel ULg et al

in Prenatal Diagnosis (2010), 30(3), 191-7

Objective To investigate the maternal plasma concentration of soluble fms-like tyrosine kinase-1 (sFlt-1) and free vascular endothelial growth factor (free-VEGF) at 11 to 13 weeks of gestation in patients ... [more ▼]

Objective To investigate the maternal plasma concentration of soluble fms-like tyrosine kinase-1 (sFlt-1) and free vascular endothelial growth factor (free-VEGF) at 11 to 13 weeks of gestation in patients destined to develop preeclampsia (PE) and to examine whether any possible differences in maternal plasma levels are related to uterine artery pulsatility index (PI) and maternal serum placental growth factor (PlGF). Methods Plasma free-VEGF, plasma sFlt-1, serum PlGF and uterine artery PI were measured at 11 to 13 weeks in 90 cases that subsequently developed PE and in 180 unaffected controls. Results In the majority of cases of PE and controls the levels of free-VEGF were undetectable. In the pregnancies that developed PE, compared to unaffected controls, uterine artery PI was higher, serum PlGF was lower but there was no significant difference in levels of sFlt-1. Conclusion Measurement of free-VEGF and sFlt-1 in maternal blood at 11 to 13 weeks of gestation is not useful in the prediction of pregnancies destined to develop PE [less ▲]

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See detailMaternal stress markers during pregnancy
Tsubouchi, Hiroaki; Shimoya, Koichiro; Song, Myhion et al

Poster (2006)

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See detailMaternal transfer of chlorinated contaminants in the leatherback turtles, Dermochelys coriacea, nesting in French Guiana
Guirlet, Elodie ULg; Das, Krishna ULg; Thomé, Jean-Pierre ULg et al

in Chemosphere (2010), 79(7), 720-726

We examined the maternal transfer of organochlorine contaminants (OCs), pesticides (DDTS and HCHs) 26 and polychlorinated biphenyls (PCBs), and the temporal variation of blood and eggs concentrations from ... [more ▼]

We examined the maternal transfer of organochlorine contaminants (OCs), pesticides (DDTS and HCHs) 26 and polychlorinated biphenyls (PCBs), and the temporal variation of blood and eggs concentrations from 27 38 leatherback turtles (Dermochelys coriacea) nesting in French Guiana. PCBs were found to be the dom- 28 inant OCs with respective mean concentrations of 55.14 ng g 1 lipid-mass for egg and 1.26 ng mL 1 wet- 29 mass for blood. OC concentrations were lower than concentrations measured in other marine turtles 30 which might be due to the lower trophic position (diet based on gelatinous zooplankton) and to the loca- 31 tion of their foraging and nesting grounds. All OCs detected in leatherback blood were detected in eggs, 32 suggesting a maternal transfer of OCs. This transfer was shown to depend on female blood concentration 33 for RDDTs and for the most prevalent PCB congeners, since significant relationships were found between 34 paired blood–egg concentrations. During the nesting season, OC concentrations in eggs and the percent- 35 age of lipid in eggs were found to decline in successive clutches, highlighting a process of offloading from 36 females to their eggs and a decreasing investment of lipid from females into their clutches. OCs in eggs 37 tended to be higher in females spending 3 years in the foraging grounds between two nesting seasons 38 than in those spending 2 years, suggesting an impact of time spacing two breeding seasons, called remi- 39 gration interval, and of location of the foraging grounds. [less ▲]

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See detailMaternal transfer of mercury to offspring in phocids
Habran, Sarah ULg; Pomeroy, Paddy; Debier, Cathy et al

Conference (2009, June 09)

Marine mammals may display high mercury (Hg) levels in their tissues, which raises the question of the importance of toxic metal transfer from mother to offspring. Indeed, Hg could be transferred from ... [more ▼]

Marine mammals may display high mercury (Hg) levels in their tissues, which raises the question of the importance of toxic metal transfer from mother to offspring. Indeed, Hg could be transferred from mothers to fetuses via the placenta and to suckling pups via the milk, potentially affecting them during their most sensitive periods of development. Some lactating female phocids fast during the suckling period. This fasting period involves not only an important mobilization of energy reserves, but also mobilization of potentially associated contaminants. We studied and compared maternal transfer of Hg to offspring in two phocid species: the northern elephant seal (Mirounga angustirostris) from the Californian coast and the grey seal (Halichoerus grypus) from the Isle of May in Scotland. Total mercury concentrations (THg) were measured in whole blood and maternal milk of 20 mother-pup pairs of each species in early and late lactation. Methylmercury (MeHg) levels were also measured in the blood and milk of grey seals. Results indicated that Hg passed from the maternal tissue into the phocid milk. Milk showed a range of THg levels from 15 to 60 ppb (ng.g-1-wet-weight). From the first days after birth, pups displayed relatively high blood Hg levels suggesting that a Hg transfer through placenta occurred. Blood Hg levels in mothers and pups also varied significantly throughout lactation. While maternal levels doubled, pup levels were reduced by half between the beginning and the end of lactation. Remobilization of proteins and lipids during fasting and milk production in mothers might lead to a release of Hg in blood and therefore increase the levels in late lactation. On the contrary, Hg would be progressively stored in pup organs during their development. Decreasing Hg levels in pups also suggest that the Hg intake via the milk might be lower than that via the placenta. This study highlights a transplacental and transmammary transfer of Hg in both phocid populations. However, further toxicology studies are needed to help understand the potential impact of this Hg transfer. Results also showed that physiological processes such as lactation and/or fasting can modify Hg levels in the blood of mothers and pups. Therefore, such processes and body condition should be considered carefully when interpreting Hg levels in the framework of biomonitoring. [less ▲]

Detailed reference viewed: 82 (14 ULg)