References of "2003"
     in
Bookmark and Share    
Full Text
See detailKarsts en roches cristallines silicatées non carbonatées. Cas dans des gneiss : la grotte de Mfoula, Sud Cameroun
Willems, Luc ULg; Pouclet, André; Vicat, Jean-Paul

in Actes des Journées Européennes de l'AFK 2003 (2003)

Since the Seventies, a séries of phenomena developed in non carbonated silicated rocks question the traditional vision of karst. The term of karst is used in the meaning of "any feature of the classical ... [more ▼]

Since the Seventies, a séries of phenomena developed in non carbonated silicated rocks question the traditional vision of karst. The term of karst is used in the meaning of "any feature of the classical karst morphology (caves, sink-holes, lapiaz...) where dissolution plays the main genetic action and this in any kind of rocks". The cave of Guéssédoundou illustrâtes a karst in métagabbros. It opens at the top of a small hill, in a dépression twenty meters long and three to four meters deep. The walls of this dépression are subvertical and the bottom is partially occupied by angular pluridecimetric blocks. The cave is opened on several meters in the southern side of the dépression and is prolonged in the form of too narrow conduits to be explore. The bedrock is a metagabbro with fine grains, slightly weathered, crossed by decimetric quartzose veins. Gabbroïc texture is preserved, as well as part of magmatic plagioclases. The remainder is transformed into a mixture of white feldspar and clinozoisite. Pyroxene are pseudomorphosed in actinote and chlorite. The site dépression was created along a N 10° shear zone where rocks suffered important fracturation and fluid transfers, as shown by its silification and ferruginisation.. Moreover, a East-West schistosity, former to shearing, structures the gabbro. The présence of angular blocks of variable size and the absence of human activity trace on the site show that the dépression was formed naturally by collapse of the roof of a more vast cavity whose current cave would be the visible residual prolongation. The absence of flow traces and mechanical abrasion means that this cavity is due only to chemical érosion . At the cave entry and on the subvertical walls of the dépression were formed by alveoli a few centimètres to a few décimètres in diameter. Thèse alveoli of wall are known in other lithologies, in particular in limestones. The absence of salts within the rock draws aside a formation by sait weathering. The smooth aspect and non fractured walls of the cells cannot resuit from a corrosion to a fracturing node. The closed aspect of the dépression and the absence of flow trace eliminate the assumptions from formation by water swirls or eolisation. The genesis of the cave must be earlier to the installation of a weathering cover since the rock is little deteriorated and the alveoli are not developed on a quite particular level which would correspond to a précise pedogenic horizon. Only a generalized dissolution of the métagabbros, in relation to a slow solution circulation, being carried out with the favour of the fracturing plans of the shearing zone makes it possible to explain the formation of the alveoli. The inversion of relief results from a weaker érosion of the rocks made more résistant to this place by the quartz seam mainstay and by the ferruginisation along the shearing zone. In the other hand, the crushed rocks, become porous, drained the infiltrations of meteoric water, facilitating the dissolution processes. The study of the site of Guéssédoundou shows that karstic phenomena can also exist in silico-aluminous formations of crystalline rocks [less ▲]

Detailed reference viewed: 15 (1 ULg)
Full Text
Peer Reviewed
See detailRecherche et dosage des résidus de DDT dans le sérum
Charlier, Corinne ULg

in Immuno-Analyse & Biologie Spécialisée [=IBS] (2003), 18

Detailed reference viewed: 34 (8 ULg)
Full Text
Peer Reviewed
See detailThe changing spectrum of TSH-secreting pituitary adenomas: diagnosis and management in 43 patients.
Valdes Socin, Hernan Gonzalo ULg; Chanson, Philippe; Delemer, B. et al

in European Journal of Endocrinology (2003), 148(4), 433-442

OBJECTIVE: Our aim was to report the recent changes in diagnosis and management of TSH-secreting pituitary adenomas. METHODS: We retrieved 43 consecutive patients with TSH-secreting pituitary tumors (23 ... [more ▼]

OBJECTIVE: Our aim was to report the recent changes in diagnosis and management of TSH-secreting pituitary adenomas. METHODS: We retrieved 43 consecutive patients with TSH-secreting pituitary tumors (23 male and 20 female) among 4400 pituitary adenomas followed between 1976 and 2001 in six Belgian and French centers. RESULTS: TSH was elevated in 18/43 and alpha subunit in 13/32 patients. In patients with intact thyroid (n=30), mean free tri-iodothyronine was 13.1 pmol/l (range 3.5-23) and mean free thyroxine was 38.4 pmol/l (range 10.2-62.7). Hyperprolactinemia and acromegaly were associated in 9/43 and 8/43 cases. The number of associated hypersecretions was higher in macroadenomas than in microadenomas (Chi square = 11.2, P<0.01). Two women had sporadic multiple endocrine neoplasia type 1-associated syndrome. The proportion of microadenomas versus macroadenomas was 1/11 (period 1974-1986) and 8/32 (period 1987-2001). Bilateral petrosal sinus sampling, (111)In-pentreotide scintigraphy and ((11)C)-l-methionine positron emission tomography scan confirmed diagnosis in four questionable microadenomas. Macroadenomas with extrasellar extension (31 cases) had a tendency to be medially located. Medical treatment with somatostatin analogs was initiated as first-line treatment in 26 patients. TSH levels were reduced by more than 50% in 23/26 cases. A tumoral shrinkage of more than 20% was observed in 5/13 cases. Surgery was performed in 36 patients. After 1 year, 21 of them (58.3%) met the criteria of surgical favorable outcome. Pituitary radiotherapy (n=8) and somatostatin analogs allowed normalization in cases not cured by surgery. CONCLUSION: Ultrasensitive methods for TSH measurement led to an earlier recognition of TSH-secreting pituitary tumors. In this series, we observed that TSH-secreting pituitary tumors are today more frequently found at the stage of microadenomas, medially located, without associated hypersecretions and needing new exploration methods as compared with older series. This changing spectrum in the presentation of TSH-secreting pituitary tumors and the excellent response to somatostatin analogs has been accompanied by an improvement in the prognosis of the disease. [less ▲]

Detailed reference viewed: 27 (5 ULg)
Full Text
Peer Reviewed
See detailChronique de la 56ème Session de la Société Internationale Fernand de Visscher à Cagliari (17-21 Septembre 2002)
Gerkens, Jean-François ULg

in Revue Internationale des Droits de l'Antiquité (2003), L

Detailed reference viewed: 6 (0 ULg)
Full Text
Peer Reviewed
See detailStatistical models for the analysis of controlled trials on acute migraine
Vandenhende, François; Lambert, Philippe ULg

in Pharmaceutical Statistics (2003), 2

pecific efficacy criteria were defined by the International Headache Society for controlled clinical trials on acute migraine. They are derived from the pain profile and the timing of rescue medication ... [more ▼]

pecific efficacy criteria were defined by the International Headache Society for controlled clinical trials on acute migraine. They are derived from the pain profile and the timing of rescue medication intake. We present a methodology to improve the analysis of such trials. Instead of analysing each endpoint separately, we model the joint distribution and derive success rates in any criteria as predictions. We use cumulative regression models for each response at a time and a multivariate normal copula to model the dependence between responses. Parameters are estimated using maximum likelihood. Benefits of the method include a reduction in the number of tests performed and an increase in their power. The method is well suited to dose-response trials from which predictions can be used to select doses and optimize the design of subsequent trials. More generally, our method permits a very flexible modelling of longitudinal series of ordinal data. [less ▲]

Detailed reference viewed: 17 (3 ULg)
See detailThe identification of experimental microscopic hafting traces on lithic tools
Rots, Veerle ULg

in Le Sécretariat du Congrès (Ed.) Sessions Générales et Posters / General Sessions and Posters. Acts of the XIVth UISPP Congress University of Liège, Belgium, 2 – 8 September 2001 (2003)

Detailed reference viewed: 23 (0 ULg)
Full Text
See detailLa société de management
Kohl, Benoît ULg; Herbatschek, M.; Matray, Didier ULg

in Actualités en droit des affaires (2003)

Detailed reference viewed: 139 (20 ULg)
Full Text
See detailDevelopment path and capital structure of belgian biotechnology firms
Bastin, Veronique; Corhay, Albert ULg; Hübner, Georges ULg et al

in Butzen, Paul (Ed.) Firms' investment and finance decisions: Theory and empirical methodology (2003)

Detailed reference viewed: 19 (4 ULg)
Peer Reviewed
See detailUniformité du détecteur en tomoscintigraphie avec collimateur sténopé
Bleeser, Frédéric; Seret, Alain ULg

in Médecine Nucléaire : Imagerie Fonctionnelle et Métabolique (2003), 27(9), 460

Detailed reference viewed: 24 (0 ULg)
See detailLe petit cinéma de Georges Simenon
Tomasovic, Dick ULg

in Bajomée, Danielle (Ed.) Simenon, une légende du XXe siècle (2003)

Detailed reference viewed: 14 (0 ULg)
Full Text
See detailSynthèse de ligands ditopiques en tant qu’agents de contraste pour l’imagerie de résonance magnétique.
Thonon, David ULg; Paris, Jérôme; Humblet, Jacques et al

Poster (2003)

Detailed reference viewed: 3 (0 ULg)
Full Text
See detailOrganon
Seron, Denis ULg

in Motte, André; Rutten, Christian (Eds.) Philosophie de la forme: Eidos, idea, morphé dans la philosophie grecque des origines à Aristote (2003)

Detailed reference viewed: 31 (5 ULg)
Full Text
Peer Reviewed
See detailPropriétés des merrains affinés dans une solution d’enzymes naturels et destinés à la tonnellerie
Jourez, Benoît ULg; Charron, Stéphane; Hebert, Jacques ULg

in Annals of Forest Science : a Multidisciplinary and International Journal (2003), 60

Properties of shooks ageing by a treatment in a solution of natural enzymes. A speeding up of the ageing of shooks is possible by a treatment with a solution of natural enzymes. However its repercussion ... [more ▼]

Properties of shooks ageing by a treatment in a solution of natural enzymes. A speeding up of the ageing of shooks is possible by a treatment with a solution of natural enzymes. However its repercussion on physical, mechanical characteristics of wood and on its absorption potential of an hydro-alcoholic solution must be tested. Normalized samples have been extracted from 150 shooks selected on a ring width criteria from three cooperages located on different supplying area in France. The three factors cooperage, ring width class and treatment are used for statistical analysis. The cooperage factor, reflection of the supply area of each of them, affect the young modulus and the modulus of rupture in static bending but not the other characteristics. The improvement of the wood properties is closely linked to the ring width increaseof the samples. The enzymatic treatment has no significant effect on physical and mechanical characteristics of oak wood, except on the hardness and, to a lesser extent, on the absorption potential. Considering the absence of negative effect on characteristics of shooks and the positive contribution of enzymatic treatment on their ageing, this treatment could bring a very interesting economical alternative permitting to avoid long lasting storage of the shooks before assembly. [less ▲]

Detailed reference viewed: 9 (2 ULg)
Full Text
Peer Reviewed
See detailLes effets de la formation professionnelle continue : une enquête auprès des bénéficiaires des actions du Fonds social européen en Wallonie et à Bruxelles
Conter, Bernard; Maroy, Christian; Orianne, Jean-François ULg

in Politiques d'Education et de Formation : Analyses et Comparaisons Internationales (2003), 7

Detailed reference viewed: 44 (5 ULg)
Full Text
Peer Reviewed
See detailNovel surgical technique for the treatment of female stress urinary incontinence: transobturator vaginal tape inside-out.
de Leval, Jean ULg

in European Urology (2003), 44(6), 724-30

OBJECTIVES: To describe a new, simple surgical technique for the treatment of female stress urinary incontinence (SUI) and to evaluate its feasibility. METHODS: We have developed a novel surgical ... [more ▼]

OBJECTIVES: To describe a new, simple surgical technique for the treatment of female stress urinary incontinence (SUI) and to evaluate its feasibility. METHODS: We have developed a novel surgical treatment of SUI, the transobturator inside-out tension-free urethral suspension, which uses specifically designed surgical tools, and in which a synthetic tape is passed from underneath the urethra, through the obturator foramens, towards the thigh folds, without entering the pelvic region at any time during the procedure. The tape is positioned without tension under the junction between mid and distal urethra. RESULTS: The procedure was carried out in 107 consecutive patients (mean age: 62 years) using the same operative protocol in all case subjects, independently of the patient's size and weight. Mean operative time was 14 min (range: 7-20) in case of isolated SUI treatment. No bladder or urethral injuries and no vascular (hematoma or bleeding) or neurological complications were encountered. CONCLUSIONS: The results of this study indicate that our novel transobturator inside-out surgical technique for treating SUI is feasible, accurate, and quick. This technique avoids damage to the urethra and bladder and, therefore, makes cystoscopy not necessary. Further prospective studies are currently ongoing to determine the efficacy of our new surgical approach for treating SUI. [less ▲]

Detailed reference viewed: 46 (0 ULg)
Full Text
Peer Reviewed
See detailLifting, Superadditivity, Mixed Integer Rounding and Single Node Flow Sets Revisited
Louveaux, Quentin ULg; Wolsey, Laurence A.

in 4OR : Quarterly Journal of the Belgian, French and Italian Operations Research Societies (2003), 1

In this survey we attempt to give a unified presentation of a variety of results on the lifting of valid inequalities, as well as a standard procedure combining mixed integer rounding with lifting for the ... [more ▼]

In this survey we attempt to give a unified presentation of a variety of results on the lifting of valid inequalities, as well as a standard procedure combining mixed integer rounding with lifting for the development of strong valid inequalities for knapsack and single node flow sets. Our hope is that the latter can be used in practice to generate cutting planes for mixed integer programs. The survey contains essentially two parts. In the first we present lifting in a very general way, empha- sizing superadditive lifting which allows one to lift simultaneously different sets of variables. In the second, our procedure for generating strong valid inequalities consists of reduction to a knapsack set with a single continuous variable, construc- tion of a mixed integer rounding inequality, and superadditive lifting. It is applied to several generalizations of the 0-1 single node flow set. [less ▲]

Detailed reference viewed: 102 (18 ULg)
See detailDévelopper les collaborations entre les classes de l'enseignement fondamental et les bibliothèques publiques
Lafontaine, Dominique ULg

in Lire ensemble. Ecoles et bibliothèques : vers des synergies nouvelles (2003)

Detailed reference viewed: 14 (6 ULg)
Peer Reviewed
See detailQu'il est long le chemin vers l'équité...
Lafontaine, Dominique ULg

in L'école, dans quel(s) sens ? Actes du 2e Congrès des chercheurs en éducation, Louvain-la-Neuve, 12-13 mars 2002 (2003)

Detailed reference viewed: 13 (1 ULg)
Full Text
Peer Reviewed
See detailMaking sense of the industrial revolution, English economy and society 1700-1850.
Geerkens Provin, Eric ULg

in Revue Belge de Philologie et d'Histoire (2003), 81(2), 519-521

Detailed reference viewed: 52 (1 ULg)