References of "1997"
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See detailGenetics and Inflammatory Bowel Disease: From Association Studies to Wide Genome Screen
Louis, Edouard ULg; Belaiche, Jacques ULg

in Acta Gastro-Enterologica Belgica (1997), 60(3, Jul-Sep), 201-3

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See detailSautour - Surice: notice explicative de la carte géologique de la Wallonie
Dumoulin, Virginie; Marion, Jean-Marc ULg

Book published by Ministère de la Région wallonne, DGRNE - Publication peer-reviewed (1997)

New geological map of Wallonia published at the scale of 1/25.000, based on a new field work and using previous scientific data produced, since the previous editions of Forir, published in 1899 at the ... [more ▼]

New geological map of Wallonia published at the scale of 1/25.000, based on a new field work and using previous scientific data produced, since the previous editions of Forir, published in 1899 at the scale of 1/40.000 by the "Commission Géologique de Belgique". Previously, the sheet "Sautour" of Dupont and Purves, has been published in 1885 at the scale of 1/20.000, by the "Musée Royal d'Histoire Naturelle de Belgique". [less ▲]

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See detailLattice dynamics and ferroelectric instability of barium titanate
Ghosez, Philippe ULg; Gonze, X.; Michenaud, J. P.

in Ferroelectrics (1997), 194

Using first-principles calculations, we investigate the lattice dynamics of cubic and rhombohedral BaTiO3 and rye discuss the origin of the structural instability of this ferroelectric material. First, we ... [more ▼]

Using first-principles calculations, we investigate the lattice dynamics of cubic and rhombohedral BaTiO3 and rye discuss the origin of the structural instability of this ferroelectric material. First, we report results on the Born effective charges and the dielectric tensor and we emphasize the important reduction of these quantities in the ferroelectric phase, Then, the phonon frequencies at the Gamma point are calculated. We point out the similarity of theoretical eigenvectors in the cubic and rhombohedral phases. We examine the interaction of the vibration modes with the electric field and in particular the giant LO-TO splitting of the ferroelectric mode. Finally, separating the dipole-dipole interaction from the remaining short-range forces, we quantify the balance of forces leading to an unstable phonon in the cubic phase and we demonstrate its sensitivity to tiny effective charge changes. Within our decomposition, the stabilization of the unstable mode in the rhombohedral phase is produced by a reduction of the Born effective charges, while its stabilization under isotropic pressure is associated with a modification of the short-range forces. [less ▲]

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See detailPeritoneal endometriosis, ovarian endometriosis, and adenomyotic nodules of the rectovaginal septum are three different entities
NISOLLE, Michelle ULg; Donnez, Jacques

in Fertility and Sterility (1997), 68(4), 585-596

Objective: To review the histogenesis of peritoneal, ovarian, and rectovaginal endometriotic lesions. Design: The comparison of morphologic, morphometric, and histochemical data observed in each type of ... [more ▼]

Objective: To review the histogenesis of peritoneal, ovarian, and rectovaginal endometriotic lesions. Design: The comparison of morphologic, morphometric, and histochemical data observed in each type of lesion. Setting: A university hospital department of gynecology. Patient(s): Patients complaining of infertility or pelvic pain with laparoscopically proved endometriosis. Intervention(s): Laparoscopy was performed, and biopsy specimens from the endometriotic lesions were histologically studied. Result(s): Three types of endometriotic lesions must be considered: peritoneal, ovarian, and rectovaginal. Morphologic and morphometric data show similarities between eutopic endometrium and red peritoneal lesions, suggesting that these lesions are the first stage of early implantation of endometrial glands and stroma. After partial shedding, the red lesions regrow constantly. The shedding induces an inflammatory reaction, provoking scarification, and the lesions become black. The subsequent fibrosis leads to areas of white opacification that are inactive. The pathogenesis of ovarian endometriomas is a source of controversy. Although there seems to be a consensus concerning the invagination theory, there is still a contradiction between the implantation theory and the metaplasia theory. We recently showed that the mesothelium covering the ovary can invaginate into the ovarian cortex, pushing back the primordial follicles. The presence of mesothelial invagination in continuum with endometriotic tissue suggests that metaplastic histogenesis of ovarian endometriotic lesions occurs. Rectovaginal endometriotic nodules must be considered adenomyomas, consisting of smooth muscle with active glandular epithelium and scanty stroma. Immunocytochemical results show poor differentiation and hormonal independence of these lesions and indicate a close relation with their mesodermal müllerian origin. Conclusion(s): Peritoneal, ovarian and rectovaginal endometriotic lesions must be considered as three separate entities with different pathogeneses. [less ▲]

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See detailMechanisms of Hand Motor Recovery After Stroke: An Electrophysiologic Study of Central Motor Pathways
Bastings, Eric; Rapisarda, Giuseppe; Pennisi, Giovanni et al

in Journal of Neurologic Rehabilitation (1997), 11(2), 97-108

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See detailRégime et tactique alimentaires de la loutre (Lutra lutra) dans le Massif Central
Libois, Roland ULg

in Vie et milieu (1997), 47(1), 33-45

Otter spaints were collected in 1991 on a seasonal basis in the river Chavanon catchment, a tributary of the river Dordogne, in central France. Small sized species (bullhead, three-spined stickleback ... [more ▼]

Otter spaints were collected in 1991 on a seasonal basis in the river Chavanon catchment, a tributary of the river Dordogne, in central France. Small sized species (bullhead, three-spined stickleback, gudgeon and minnow) are the most numerous items in the diet: they account for more than 50% of the 3,148 identified preys. However, when expressed in relative biomass, their importance falls down (8 %). In fact, the brown trout, large cyprinid fish, birds and mammals make up the bulk of the diet. We found strong differences linked to the general habitat types and also seasonal ones. Frogs are mainly preyed upon during the spring whereas the snakes are exclusively taken in the summer and autumn months. Gudgeon and insects are also mainly summer and autumn preys. Perch and large cyprinid fish remais are more frequent during winter and even spring. The present results confirm the opportunistic way of predation of the otter and the fact that its hunting takes place more on the bottom and along the river banks than in the open water. [less ▲]

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See detailThe size of nanoparticles after their incorporation in gastroresistant spheroids
Duvivier, F; Grandfils, Christian ULg; Léonard, F et al

in Journal de Pharmacie de Belgique (1997), 52(3), 123

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See detailArcheologie du bâti: l'exemple des charpentes
Hoffsummer, Patrick ULg

in Archaeologia mediaevalis (1997), 20, 2

This presentation is to stimulate the interest to the study of roofs with building archaeology and dendrochronology

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See detailA novel seizure-induced synaptotagmin gene identified by differential display.
Babity, J. M.; Armstrong, J. N.; Plumier, Jean-Christophe ULg et al

in Proceedings of the National Academy of Sciences of the United States of America (1997), 94(6), 2638-41

Systemic administration of kainic acid, a cyclic analogue of glutamate, produces many of the clinical features of human temporal lobe epilepsy and status epilepticus in rats, including the induction of ... [more ▼]

Systemic administration of kainic acid, a cyclic analogue of glutamate, produces many of the clinical features of human temporal lobe epilepsy and status epilepticus in rats, including the induction of motor convulsions and the degeneration of neurons in the hippocampus and piriform cortex. Differential display PCR was used to identify mRNAs that are differentially expressed between degenerating and nondegenerating tissues in the brain after kainic acid-induced seizure activity. A novel cDNA fragment expressed in the degenerating hippocampus and piriform cortex, but not in the nondegenerating parietal cortex, was identified, cloned, and sequenced. This novel cDNA fragment identified a new member of the synaptotagmin gene family that is rapidly and transiently induced in response to seizure activity. Differential expression of this synaptotagmin gene, syt X, was confirmed by Northern blot analysis and in situ hybridization. This novel, inducible synaptotagmin gene may provide a direct link between seizure-induced neuronal gene expression and subsequent modulation of synaptic structure and function. [less ▲]

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See detailSubtotal hysterectomy in patients with endometriosis--an option.
NISOLLE, Michelle ULg; Donnez, Jacques

in Fertility and Sterility (1997), 67(6), 1185-7

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See detailEvaluation of pleural diseases with FDG-PET imaging: preliminary report.
Bury, Thierry ULg; Paulus, P; Dowlati, A et al

in Thorax (1997), 52(2), 187-9

BACKGROUND: Positron emission tomography (PET) with 18-fluorodeoxyglucose (FDG) is an accurate method for differentiating benign from malignant disease. The use of FDG-PET for the aetiological diagnosis ... [more ▼]

BACKGROUND: Positron emission tomography (PET) with 18-fluorodeoxyglucose (FDG) is an accurate method for differentiating benign from malignant disease. The use of FDG-PET for the aetiological diagnosis of pleural disease was investigated in 25 patients. METHODS: PET was performed on each subject before invasive procedures were used to determine the aetiological diagnosis. The PET data were analysed by visual interpretation of coronal, sagittal, and transverse slices. RESULTS: Sixteen patients were found to have malignant pleural disease and nine had benign disease. All patients with histologically confirmed malignant disease showed FDG uptake within the pleural thickening which was intense in 14 cases and moderate in two. PET imaging showed the absence of FDG uptake and correctly categorised seven non-malignant lesions. Two patients with infectious pleural diseases showed a localised and moderate FDG uptake. CONCLUSION: Our preliminary results suggest that FDG-PET could be an effective tool for differentiating between benign and malignant pleural diseases. [less ▲]

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See detailGustave Marissiaux. La possibilité de l’art.
Mélon, Marc-Emmanuel ULg

Book published by Musée de la Photographie (1997)

The Gustave Marisiaux's photographic work : from pictorial photography to industrial documentary. Poetic of the gaze in an indistinct world. The art of stereoscopy. Pictorial photography and society ... [more ▼]

The Gustave Marisiaux's photographic work : from pictorial photography to industrial documentary. Poetic of the gaze in an indistinct world. The art of stereoscopy. Pictorial photography and society. Elements of Gustave Marisiaux's biography (1872-1929) [less ▲]

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See detailFamilial Crohn's Disease: A Study of 18 Families
Franchimont, D.; Belaiche, Jacques ULg; Louis, Edouard ULg et al

in Acta Gastro-Enterologica Belgica (1997), 60(2, Apr-Jun), 134-7

The high frequency of familial Crohn's disease (CD) suggests a genetic predisposition. The most recent data from epidemiology and molecular biology are consistent with a multifactorial, polygenic ... [more ▼]

The high frequency of familial Crohn's disease (CD) suggests a genetic predisposition. The most recent data from epidemiology and molecular biology are consistent with a multifactorial, polygenic inheritance with a possible genetic heterogeneity. The aim of our study was, first to compare familial and sporadic CD on the basis of the type and location of the disease, and age at diagnosis, and second, to evaluate among families, the concordance rate for the type and location of the disease. PATIENTS AND METHODS: 18 families with 2 (n = 16) and 3 (n = 2) affected first degree relatives were studied. They were compared to a population of 154 sporadic CD coming from the same gastroenterology unit. RESULTS: Age at diagnosis was the same in sporadic and familial CD. There was an increased frequency of ileal (p = 0.02), and fibro stenotic (p = 0.005) CD and a decreased frequency of colonic (p = 0.006) and inflammatory (p = 0.02) disease, in familial CD. There was a significant increase in concordance rate for fibrostenotic disease (p < 0.001) and a decrease for inflammatory disease (p < 0.01), among the families. The observed concordance rate for the location of the disease was not significantly different from the expected one. In conclusion, these data suggest that CD may be heterogenous and that different clinical patterns may be determined either by genetic or environmental factors. [less ▲]

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See detailEvaluation of us-guided percutaneous fine needle aspiration biopsyin thyroïd nodules
Meunier, Paul ULg; Collignon, J.; Thiry, Albert ULg et al

in International Congress of Head and neck Radiology - Abstract book (1997)

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See detailProgesterone receptors (PR) in ectopic endometrium?
NISOLLE, Michelle ULg; Donnez, Jacques

in Fertility and Sterility (1997), 68(5), 943-4

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See detailImmunohistochemical analysis of proliferative activity and steroid receptor expression in peritoneal and ovarian endometriosis
NISOLLE, Michelle ULg; Casanas-Roux, Françoise; Donnez, Jacques

in Fertility and Sterility (1997), 68(5), 912-919

Objective: To assess the proliferative activity of eutopic and ectopic endometrium throughout the menstrual cycle and its correlation to steroid receptor content. Design: The immunohistochemical use of Ki ... [more ▼]

Objective: To assess the proliferative activity of eutopic and ectopic endometrium throughout the menstrual cycle and its correlation to steroid receptor content. Design: The immunohistochemical use of Ki 67 was applied to investigate the proliferation index. A recently advanced stereographic computer technology was used to investigate steroid receptors. Setting: University hospital department of gynecology. Patient(s): Biopsies of eutopic endometrium, black and red peritoneal endometriotic lesions, and ovarian endometriomas were taken from infertile patients and classified according to the phase of the cycle. Result(s): In normal endometrium, the glandular proliferation index was highest during the proliferative phase and was statistically significantly reduced during the secretory phase. No proliferative activity was observed in the late secretory phase. No statistically significant differences were found between ectopic endometrium and eutopic endometrium except during the late secretory phase, when proliferative activity was still present in endometriotic tissue. The stromal proliferation index was similar in red lesions, ovarian endometriomas, and eutopic endometrium during the secretory phase. In normal endometrium, the highest concentrations of estrogen receptors (ERs) and P receptors (PRs) occurred in the epithelial and stromal cells during the late proliferative phase of the menstrual cycle. Estrogen receptor and PR content declined throughout the secretory phase. In ectopic endometrium, PR persisted in the glandular epithelium during the late secretory phase. Estrogen receptors persisted in the glandular epithelium and stroma of red peritoneal lesions and ovarian endometriomas during the late secretory phase. Conclusion(s): The high proliferative activity and the persistence of ERs and PRs in the stroma of red lesions and ovarian endometriomas emphasize the primordial role of the stroma in the development of endometriosis and suggest different mechanisms of proliferation control from those observed in eutopic endometrium. [less ▲]

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See detailThe effect of dispersion and atomisation conditions on the compaction response of silicon nitride granules
Destoop, Vincent; Mertens, Anne ULg; Hendrix, W. et al

in Key Engineering Materials [=KEM] (1997), 132-136

The relationship between the dispersion conditions of silicon nitride slurries and the compaction behaviour of spray dried granules is reported in the case of two commercial powders. Two parameters have ... [more ▼]

The relationship between the dispersion conditions of silicon nitride slurries and the compaction behaviour of spray dried granules is reported in the case of two commercial powders. Two parameters have been retained: the solid loading, varied between 10 and 30 vol.% and the degree of stability of the suspension, controlled by adjustment of the pH. [less ▲]

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See detailStudy of ecological condition based upon the remote sensing data and GIS – The neural network approach.
Zhang, Ming; Bogaert, Jan ULg; Impens, Ivan

in Cappellini, V (Ed.) Time-Varying Image Processing and Moving Object Recognition 4 (1997)

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