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See detailOccipito-cervical fixation «vertex»: indications and operative techniques
Martin, Didier ULg

Conference (2002, October 10)

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See detailOcclusion dentaire : retentissement sur la force musculaire
Croisier, Jean-Louis ULg; Jalali, R.; Fernandez-Moreno, S. et al

in Archives of Physiology & Biochemistry (1998, September), 106(Suppl B), 154

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See detailOCCP Seminar on Dominant Positions and New Technologies
Petit, Nicolas ULg

Conference (2009, July 08)

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See detailOccult exposure to asbestos in steel workers revealed by bronchoalveolar lavage.
CORHAY, Jean-Louis ULg; Delavignette, Jean-Paul ULg; Bury, Thierry ULg et al

in Archives of Environmental Health (1990), 45(5), 278-82

To investigate the asbestos burden in a steelplant environment, we counted asbestos bodies (ABs) in the bronchoalveolar lavage fluid (BALF) of 65 steel workers who had retired during the previous 5 y ... [more ▼]

To investigate the asbestos burden in a steelplant environment, we counted asbestos bodies (ABs) in the bronchoalveolar lavage fluid (BALF) of 65 steel workers who had retired during the previous 5 y. They had worked for at least 15 y in the same area of the plant (coke oven or blast furnace) as maintenance or production workers. On the basis of occupational anamnesis, 28 had occasional past professional exposure to asbestos; the remaining 37 workers denied any contact with asbestos. A total of 54 white-collar workers who had no occupational exposure to asbestos were included in the study as controls. An increased prevalence and concentration of ABs was found in the BALF of steel workers. Electron microscopy and EDAX analysis of AB from steel workers revealed that the core fibers were mainly amphiboles. More ABs were found in the BALF of maintenance workers than in production workers. However, the BALF from steel workers who denied any contact with asbestos revealed an increased AB burden v. controls. This demonstrates that steel workers may be subject to an occult exposure to amphiboles in the steelplant environment. [less ▲]

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See detailOccult genital herpes presenting as an endometrial infection detected at delivery: a report of two cases
Aghazarian, Saro; Nikkels, Arjen ULg; Grodos, Jacques et al

in Journal of the European Academy of Dermatology & Venereology (1997), 9

Background: The prevalence and clinical implications of asymptomatic genital herpes remain elusive. Objective/aim: We report two cases of clinically asymptomatic intrautcrine herpes simplex virus II (HSV ... [more ▼]

Background: The prevalence and clinical implications of asymptomatic genital herpes remain elusive. Objective/aim: We report two cases of clinically asymptomatic intrautcrine herpes simplex virus II (HSV-II) infection in order to discuss their pathological significance and demonstrate the potential utility of specific DNA probes and antibodies. Methods: Standard histology, immunohistochemistry (IHC) and in situ hybridization (ISH) were applied to formalin-tixed. paraffin-em bedded lissue sections of curettage specimens from women presenting deciditalised fragments retention after normal delivery. Results: Hisiological analysis revealed a focal clearing of endometrial epithelial cell nuclei, suggesting a viral etiology. ISH and IHC with differetit DNA probes or antibodies confirmed the diagnosis of HSV-II infection at the time of specimen collection. Clinical signs of muco-cutaneous involvement in the mothers and of neonatal HSV infection were not observed. Conclusion: These findings suggest that intrauterinc HSV-II infection is not always associated with disease. The IHC and ISH methods can be helpful to a.ssess the diagnosis of HSV-II intrauterine infections in the presence of optically clear cndotTietrial nuclei. Whether or not such HSV-II occult infection may be associated with viral shedding and risk of sexual transtnission was not evaluated in the present study. © 1997 Elsevier Science B.V. [less ▲]

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See detailOccult Herpes Simplex Virus Colonization of Bullous Dermatitides
Nikkels, Arjen ULg; Delvenne, Philippe ULg; Herfs, Michael ULg et al

in American Journal of Clinical Dermatology (2008)

Background: Acantholytic disorders, including pemphigus vulgaris, chronic benign familial pemphigus (Hailey-Hailey disease), Darier disease, and Grover transient acantholytic dermatosis, as well as other ... [more ▼]

Background: Acantholytic disorders, including pemphigus vulgaris, chronic benign familial pemphigus (Hailey-Hailey disease), Darier disease, and Grover transient acantholytic dermatosis, as well as other vesiculobullous disorders, including bullous pemphigoid, epidermolysis bullosa, and atopic dermatitis, are prone to florid infections by herpes simplex virus (HSV)-I and -II, and, more rarely, by varicella-zoster virus (VZV). As these infections are difficult to recognize clinically and histologically, their frequency remains unknown. A possible occult viral colonization has never been documented in these disorders. The manner in which the primary bullous disorders are contaminated by herpesviridae remains unclear. Objective: To retrospectivally assess the possible presence of HSV and VZV in a series of biopsies of acantholytic disorders and bullous pemphigoid. Method: The typical a-herpesviridae-related cytopathic signs were searched for by conventional microscopy in skin biopsies of patients with pemphigus vulgaris (n = 19), bullous pemphigoid (n = 20), Darier disease (n = 18), Hailey-Hailey disease((Author: is this the same as superficial pemphigus, as mentioned in both Histology sections?)) (n = 3), and Grover transient acantholytic dermatosis (n = 3). Immunohistochemistry (IHC) targeted specific HSV-I, HSV-II, and VZV antigens. Polymerase chain reaction (PCR) was used for detecting HSV- and VZV-specific DNA sequences. Results: No cytopathic signs suggestive of HSV or VZV infection were detected. However, IHC revealed HSV antigens in Darier disease (1/18, HSV-I), Grover transient acantholytic dermatosis (1/3, HSV-I), pemphigus vulgaris (1/20((Author: 1/19 in the Immunohistochemistry section?)), HSV-I), and bullous pemphigoid (2/ 20, HSV-I and HSV-II). In these IHC-positive cases, PCR amplified specific HSV primers in Darier disease (1/ 18), pemphigus vulgaris (1/20((Author: 1/19 in the PCR section?))), and bullous pemphigoid (1/20). VZV antigens and nucleic acids were never identified. The HSV antigens were ((Author: nearly always, as in the Immunohistochemistry section?)) restricted to the upper part of the granular layer and thus differed from the usual HSV distribution during cutaneous infection. Negative and positive controls yielded consistently positive and negative results, respectively.((Author: OK?)) Conclusion: This report shows for the first time that clinically and histologically occult HSV colonization may occur in Darier disease, Grover transient acantholytic disease, pemphigus vulgaris, and bullous pemphigoid. Given the frequent use of immunosuppressive treatments for primary bullous disorders, greater awareness of HSV colonization and infection is recommended in these patients. [less ▲]

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See detailOccult Varicella
Nikkels, Arjen ULg; Pierard, Gérald ULg

in Pediatric Infectious Disease Journal (2009), 28(12), 1073-1075

Background: Localized varicella has been associated with UV-exposure and skin trauma. Varicella restricted to a pre-existent dermatitis is exceptional. Objectives: The clinical features, cytohistologic ... [more ▼]

Background: Localized varicella has been associated with UV-exposure and skin trauma. Varicella restricted to a pre-existent dermatitis is exceptional. Objectives: The clinical features, cytohistologic and immunohistochemical results, as well as serologic data of 6 patients with a sudden eruption of vesicular and eroded lesions restricted to a pre-existent dermatitis are presented. Results: All patients (mean age: 8,3 years, range: 3–22) showed crops of a few to numerous vesicular lesions clustered on the restricted sites of posttraumatic wound, perianal streptococcal dermatitis, dermatomycosis, allergic contact dermatitis, lichen sclerosus, and atopic foot dermatitis. All the Tzanck smears and 1 biopsy revealed multinucleated giant cells, consistent with herpes simplex virus (HSV) or varicella zoster virus (VZV) infection. Immunohistochemistry using specific anti-VZV antibodies (IE63 and gE) was positive on all the smears and the biopsy, whereas HSV-I and HSV-II immunolabeling was negative. VZV specific IgM , IgG EIAbased serology, and positive VZV-specific IgM complement fixation test suggested primary VZV infection. None had received varicella vaccine. None of the patients presented a history of varicella nor experienced breakthrough varicella. It was decided not to administer antiviral treatment, as the varicella lesions remained localized without any further skin extension and systemic signs. About 2 months later, EIA-serology revealed positive VZV-IgG and negative IgM levels in 5/5 patients. Conclusion: Some patients have varicella infection that remains hidden in a pre-existent infectious and/or inflammatory dermatitis without ever presenting full-blown chickenpox. The sudden occurrence of vesicular and/or ulcerated lesions on a pre-existent dermatitis should prompt searching for a viral infection. [less ▲]

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See detailOccultation by (136199) Eris
Jehin, Emmanuel ULg; Manfroid, Jean ULg; Gillon, Michaël ULg et al

in International Astronomical Union Circulars [=IAUCs] (2010), 9184

E. Jehin, J. Manfroid, M. Gillon, D. Hutsemekers, and P. Magain report that they observed an occultation of a star of magnitude I about 15.2 by the dwarf planet Eris (then at V about 18.7) on Nov. 6 using ... [more ▼]

E. Jehin, J. Manfroid, M. Gillon, D. Hutsemekers, and P. Magain report that they observed an occultation of a star of magnitude I about 15.2 by the dwarf planet Eris (then at V about 18.7) on Nov. 6 using the new telescope TRAPPIST at the European Southern Observatory (La Silla). A series of 3-s exposures of a field of size 3' x 3' (1".3/pixel) were secured in fast-readout mode (with a deadtime of 1.5 s), starting at 01h50m UT for one hour. Seven frames centered at 02h19m34s UT allowed them to derive the start of the occultation as 02h19m16s.75 +/- 0s.75 and the end as 02h19m47s.6 +/- 0s.2, for a total occultation time of 30.4 +/- 1.0 seconds. The predictions (see above) made by the Rio de Janeiro group (Assafin et al., Nov. 5) and by J. L. Ortiz estimated the time of the occultation around 02h18m UT for Chile, in good agreement with the observations. During the occultation, a point source is detected with a magnitude corresponding to that of Eris. A small flux increase was also seen at the middle of the occultation, which might result from refraction in Eris' atmosphere (Elliot and Olkin 1996, Ann. Rev. Earth Planet. Sci. 24, 89). Eris is by far the most-remote solar-system object observed to date via stellar occultation, with a geocentric distance of about 96 AU. TRAPPIST is a project driven by the University of Liege, in close collaboration with the Observatory of Geneva, supported by the Belgian Fund for Scientific Research and the Swiss National Science Foundation. [less ▲]

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See detailOccultation detection of a Neptune ring segment
Hubbard, W. B.; Brahic, A.; Bouchet, P. et al

in LPI Contributions (1985), 559

Not Available

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See detailOccultation Detection of a Neptune Ring Segment
Hubbard, W. B.; Brahic, A.; Bouchet, P. et al

in Lunar and Planetary Institute Science Conference Abstracts (1985, March 01)

Not Available

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See detailOccultation detection of a Neptune ring segment
Hubbard, W. B.; Brahic, A.; Bouchet, P. et al

in Journal of Geophysical Research. Supplement (1985, November 01), 90

A stellar occulation event of Neptune revealed a ring segment that was previously undetected. It appears that the object is not a complete ring, but rather a localized swarm of particles which follows a ... [more ▼]

A stellar occulation event of Neptune revealed a ring segment that was previously undetected. It appears that the object is not a complete ring, but rather a localized swarm of particles which follows a ring orbit over a limited range of longitudes. To avoid confusion with the standard use of the word ring it is suggested that the feature be called an arc. The distance of the arc zone is not precisely known because so far there has been no confirmed occultation by both an arc and the planet. [less ▲]

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See detailL’occulte au fond de tous. Idéologie et sens littéraire commun
Durand, Pascal ULg

in COnTEXTES : Revue de Sociologie de la Littérature (2007), 2

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See detailOccupation des sols dans le cône de pollution à Lubumbashi.
Munyemba, F; Bamba, I; Kabulu, J P et al

in Annales de la Faculté des Sciences Agronomiques de l’Université de Lubumbashi (2008), I(2), 19-25

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See detailOccupation du sol et écologie urbaine par télédétection satellitaire SPOT. Le cas de Liège
Nadasdi, Istvan; Donnay, Jean-Paul ULg; Baudot, Yves et al

in Actes du Colloque international sur la valorisation du satellite SPOT (1987)

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See detailOccupation et consommation de l'espace urbanisé. Quelques observations en Belgique
Merenne-Schoumaker, Bernadette ULg

in La Géographie (1976), (108), 25-42

This article examines the recent development of urbanized areas in Belgium and endeavours to measure the space consumed by some of the important human activities: industrial operations, main arteries ... [more ▼]

This article examines the recent development of urbanized areas in Belgium and endeavours to measure the space consumed by some of the important human activities: industrial operations, main arteries, housing and urban functions. Notwithstanding a considerable lack of data, the gravity of the situation in Belgium is clear : since 1929, the amount of urbanized area has more than doubled, and, in 1970, the proportion of national territory which was urbanized (28 %) was far higher than in any of the neighbouring countries. It is therefore essential to control the use of land by means of a dynamic policy in country planning and development. The waste of land must be stopped by promoting the concentration of activities in specific centres, by keeping the majority of functions in the heart of the urban network, by assisting the use and re-use of available sites and by controlling any new developments, particularly housing schemes. [less ▲]

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See detailOccupation et utilisation du sol récentes en Région wallonne : analyses et synthèses
Schmitz, Serge ULg; Christians, Charles ULg

in Bulletin de la Société Belge d'Etudes Géographiques = Tijdschrift van de Belgische Vereniging voor Aardrijkskundige Studies (1998), 1

The first part is an analytical study based on an analysis of cadastral information. It presents facts and recent evolutionary processes of land use in Wallonia, especially agriculture, forest, waste land ... [more ▼]

The first part is an analytical study based on an analysis of cadastral information. It presents facts and recent evolutionary processes of land use in Wallonia, especially agriculture, forest, waste land and urbanized areas. The information is based on the municipality scale. The paper draws a compartmentalization of Wallonia: in 1992, urbanized areas represented over 20% and 40% in the urban-industrial trench and in Walloon Brabant, spilling area for Brussels population. In Ardennes, Loraine and Fagne Famenne, Forest prevailed occupying over 40% of the land. Agriculture was the main land used over 70% on low loess plateaux and with over 55% especially in Condroz and Central Ardennes. There was a slow decrease of agriculture between 1982 and 1992, usually with less than 10% for a third of the region. Forest erratically fluctuated between -5% and +5%. On the contrary urbanized areas grew everywhere with peaks around Liege, in Walloon Brabant and along motorways. It was the result of both residential urbanization and the standard increase of land use per inhabitant. The analysis shows that, during the seventies, peaks of urbanization coincide quite well with demographic evolution typology. The second part is a continuation of the preceding analytical study. It presents typology and evolution synthesis in order to divide Wallonia into districts and analyses some mechanics especially urbanization and land policy. The analytical maps lead to the building up of two types of municipalities: urban and country land use municipalities. Within the country type, five subtypes have been characterized upon the agriculture and forest combinations. Urbanization mechanics are responsible for the schematic division into two parts by a line, the south border of Condroz and Herve plateau. Urbanization concerns first the urban-industrial trench and Walloon Brabant. Hainaut is an forests also divide Wallonia between the north and the south. The agricultural areas are first victims of the urbanization progress. [less ▲]

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See detailL’occupation gravettienne de l’Atelier de Taille de la Berge Nord-Est
Miller, Rebecca ULg; Guillaume, Alain; Flas, Damien ULg

in Miller, Rebecca; Haesaerts, Paul; Otte, Marcel (Eds.) L’atelier de taille aurignacien de Maisières-Canal (Belgique) (2004)

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See detailL'occupation mérovingienne de Sclayn et ses prolongements au Bas Moyen Age
Hoffsummer, Patrick ULg

in La civilisation mérovingienne dans le bassin mosan (1986)

Detailed reference viewed: 15 (0 ULg)