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See detailA new theory for torsional stiffness of multi-span bundle overhead transmission lines.
Wang, Jianwei; Lilien, Jean-Louis ULg

in IEEE Transactions on Power Delivery (1998), 13(N°4), 1405-1411

A new theory for torsional stiffness of multi-span bundle overhead lines is presented.

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See detailPerturbed Proximal Point Algorithm with Nonquadratic Kernel
Brohé, Myrana; Tossings, Patricia ULg

E-print/Working paper (1998)

Let H be a real Hilbert space and T be a maximal monotone operator on H. A well-known algorithm, developed by R.T. Rockafellar, for solving the problem "To find x in H such that 0 in Tx" is the proximal ... [more ▼]

Let H be a real Hilbert space and T be a maximal monotone operator on H. A well-known algorithm, developed by R.T. Rockafellar, for solving the problem "To find x in H such that 0 in Tx" is the proximal point algorithm. Several generalizations have been considered by several authors: introduction of a perturbation, introduction of a variable metric in the perturbed algorithm, introduction of a pseudo-metric in place of the classical regularization, ... We summarize several of these extensions by taking into account a pseudo-metric as regularization and a perturbation in an inexact version of the algorithm. [less ▲]

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See detailEfficacy and Tolerability of Calcitonin in the Prevention and Treatment of Osteoporosis
Halkin, V; Reginster, Jean-Yves ULg

in BioDrugs : Clinical Immunotherapeutics, Biopharmaceuticals & Gene Therapy (1998), 10(4), 295-300

Calcitonin in general, and, more specifically, salmon calcitonin (salcatonin), has been known for 30 years to be a specific inhibitor of bone resorption. Studies have confirmed its efficacy in metabolic ... [more ▼]

Calcitonin in general, and, more specifically, salmon calcitonin (salcatonin), has been known for 30 years to be a specific inhibitor of bone resorption. Studies have confirmed its efficacy in metabolic bone diseases characterised by excessive bone resorption, such as osteoporosis. Most randomised studies in which salcatonin and oral calcium were administered for 1 to 5 years to recently postmenopausal women for the prevention of osteoporosis have shown that bone mineral density or bone content of the lumbar spine increased significantly, compared with a reduction among women receiving calcium only. Prospective studies have shown that salcatonin is effective in the treatment of established osteoporosis, reducing significantly the relative risk of new vertebral fractures. The benefits of salcatonin nasal spray therapy were observed in the majority of women studied, and it has been shown to be an effective alternative for osteoporotic women more than 5 years postmenopausal who refuse estrogens, or for whom estrogens are contraindicated. Finally, in established osteoporosis, nasal calcitonin possesses a potent analgesic effect. The well-demonstrated effects of nasal calcitonin permit it to be considered a well tolerated and efficient approach for prevention and treatment of postmenopausal osteoporosis. [less ▲]

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See detailClinical Pattern of Corticosteroid Dependent Crohn's Disease
Franchimont, D. P.; Louis, Edouard ULg; Croes, F. et al

in European Journal of Gastroenterology & Hepatology (1998), 10(10), 821-5

OBJECTIVES: Corticosteroid dependency in Crohn's disease (CD) is characterized by the need for chronic use of corticosteroids to maintain clinical remission. Several definitions have been used. Depending ... [more ▼]

OBJECTIVES: Corticosteroid dependency in Crohn's disease (CD) is characterized by the need for chronic use of corticosteroids to maintain clinical remission. Several definitions have been used. Depending on the definition, 10-30% of the patients are considered as corticosteroid dependent. The aim of the study was to define a clinical pattern of corticosteroid dependent CD patients. PATIENTS AND METHODS: Epidemiological and clinical characteristics were retrospectively compared between 20 corticosteroid dependent CD patients and 248 non-corticosteroid dependent CD patients by using univariate and multivariate analyses. Corticosteroid dependency was defined either by two successive relapses during the 2 months after discontinuing glucocorticoids (n=5) or by two successive relapses at dose tapering, after successful treatment of a flare-up by using glucocorticoids (n=15). RESULTS: Corticosteroid dependent CD patients were younger at diagnosis (P < 0.001), and were characterized by a higher frequency of colonic location (P< 0.05), but lower frequency of ileal location (P < 0.01), and higher ano-perineal location (P < 0.05). They were also more frequently smokers (P< 0.05) and users of contraceptive pills (P< 0.01). The inflammatory type of the disease was increased (P < 0.01), while the fibrostenotic type was decreased (P < 0.001) in corticosteroid dependent CD patients. By multivariate analysis, a smoking habit (P < 0.01), a colonic location (P < 0.05), a non-fibrostenotic type (P< 0.05) and a younger age at diagnosis (P< 0.05) were shown to be independently associated with corticosteroid dependency. CONCLUSIONS: This study suggests a clinical pattern associated with corticosteroid dependency. Whether this clinical pattern is simply associated with the dependency, or whether a primary decrease of corticosensitivity produces this clinical pattern, is not known. Further prospective studies will have to determine whether the presence of these clinical characteristics is predictive of corticosteroid dependency and whether this prediction will be useful for the management of this condition. [less ▲]

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See detailLe cas clinique du mois. L'endocardite métastatique: observation clinique et revue de la littérature
Graas, M.P.; Evrard, P.; CREEMERS, Etienne ULg et al

in Revue Médicale de Liège (1998), 53(10), 588-91

The authors describe a case of metastatic endocarditis associated with a gastric carcinoma. The diagnosis was made early and the treatment by surgery and chemotherapy allowed a survival of 18 months ... [more ▼]

The authors describe a case of metastatic endocarditis associated with a gastric carcinoma. The diagnosis was made early and the treatment by surgery and chemotherapy allowed a survival of 18 months, which is unusually long. The differential diagnosis is discussed and includes nonbacterial thrombotic endocarditis, infectious endocarditis and primary tumors of the heart. [less ▲]

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See detailFormer pour promouvoir un changement des comportements ? Enjeux et méthodes de l'éducation pour la santé
Mairiaux, Philippe ULg; Vandoorne, Chantal ULg

in Formation - Information des salariés (1998, October)

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See detailPrevalence and Molecular Typing of Attaching and Effacing Escherichia Coli among Calf Populations in Belgium
China, B.; Pirson, V.; Mainil, Jacques ULg

in Veterinary Microbiology (1998), 63(2-4), 249-259

Attaching and effacing Escherichia coli are involved in diarrhea in 2 to 8-week old calves. The virulence factors of these bacteria include: (i) the secretion of proteins (i.e. EspB) involved in ... [more ▼]

Attaching and effacing Escherichia coli are involved in diarrhea in 2 to 8-week old calves. The virulence factors of these bacteria include: (i) the secretion of proteins (i.e. EspB) involved in microvilli effacement, (ii) the production of the intimin, a 94 kDa outer membrane protein encoded by the eaeA gene and involved in the intimate attachment of bacteria to epithelial cell and (iii) the production of verotoxins: VT1 and/or VT2. We investigated the presence and the pathotype of these strains in several calf populations by colony hybridization or by genetic amplification. Using the colony hybridization method we showed first that only 5% of calves who died from diarrhea presented EaeA+ E. coli strains and secondly that 19% of healthy calves showed an asymptomatic carriage. However, using colony hybridization and genetic amplification, we identified EaeA+ strains in 91% of calves living in farms with recurrent diarrhea problems. In 66% of the calves, there was a correlation between the presence of AEEC and diarrhea. At the pathotype level, most of the EaeA+ isolates were negative for VT probes. In VT+ bacteria, the majority were VT1+. The number of VT positive bacteria was significantly higher in calves who died from diarrhea than in healthy or sick calves. This underlined the aggravating role of verotoxins in the disease. Moreover, only 25% of the bovine AEEC were positive with the EaeB probe. Surprisingly, the proportion of EaeB+ strains was significantly higher in healthy calves than in other populations. [less ▲]

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See detailAge-related differences in random generation
Van der Linden, Martial ULg; Beerten, A.; Pesenti, M.

in Brain & Cognition (1998), 38(1), 1-16

This study investigated the effects of age on a random generation task. In Experiment 1, young and elderly subjects were asked to generate random strings of letters at 1-, 2-, and 4-s rates. The elderly ... [more ▼]

This study investigated the effects of age on a random generation task. In Experiment 1, young and elderly subjects were asked to generate random strings of letters at 1-, 2-, and 4-s rates. The elderly subjects produced more alphabetical stereotype responses than young subjects, even in the slowest rate condition. Furthermore, as faster rates were imposed, elderly subjects could no longer maintain the pace and missed responses. In Experiment 2, subjects were required to generate letters at the same time that they sorted cards into one, two, four, or eight categories. Age-related differences were observed on most of the measures of randomness (stereotypes, zero-order, and first-order measures). In addition, the number of errors increased with the number of sorting alternatives, especially for elderly subjects. These results suggest the existence of a reduction of the central executive resources, along with a reduced inhibition ability, in the elderly subjects. However, the contribution of a perceptual speed factor is also discussed. [less ▲]

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See detailAcromégalie : Consultation
Beckers, Albert ULg; Stevenaert, Achille ULg

in Medical News (1998), 49

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See detailAcromegalie : Consult
Beckers, Albert ULg; Stevenaert, Achille ULg

in Medical News (1998), 49

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See detailL’évaluation biologique des décharges en relation avec les propriétés de perméabilité
Steyer, E.; Ourth, A.; Hiligsmann, Serge ULg et al

Scientific conference (1998, September 25)

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See detailDiscours de rentrée académique 1998-1999
Legros, Willy ULg

Speech/Talk (1998)

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See detailCartilage, un organe à ne pas négliger !
Henrotin, Yves ULg

Article for general public (1998)

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See detailArthrose, une place de choix pour l'aceclofenac.
Henrotin, Yves ULg

Article for general public (1998)

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See detailInfluence of end group and molecular weight on polybutadiene fingerprint secondary ion mass spectra
Vanden Eynde, X.; Bertrand, P.; Dubois, Philippe ULg et al

in Macromolecules (1998), 31(19), 6409-6416

Polybutadiene samples of different molecular weight have been synthesized by anionic polymerization as initiated by sec-butyllithium with low polydispersity and a major content of 1,2-vinyl units. They ... [more ▼]

Polybutadiene samples of different molecular weight have been synthesized by anionic polymerization as initiated by sec-butyllithium with low polydispersity and a major content of 1,2-vinyl units. They have been analyzed by time-of-flight secondary ion mass spectrometry (ToF-SIMS) in order to investigate the sensitivity of this method toward the sec-butyl end group and toward the molecular weight. The SIMS spectra show the characteristic fragment of the end group, C4H9+ at m/z = 57, whose the peak intensity is strongly dependent on the polymer molecular weight, as is the case for almost all the fragment intensities. A model consistent with the peak intensity variations is used to give some new insights into the fragmentation mechanism at the end groups and within the main chain. Moreover, the analysis of the end group fragment allows Mn to be readily determined up to Mn = 4 × 104 from, for example, the Y(53)/Y(57) intensity ratio where Y(53) is the intensity of the deprotonated repeat unit ([M − H]+). Other Mn calibration methods have also been used and are discussed in terms of their accuracy and physical meaning. [less ▲]

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See detailFlüssig-Flüssig-Extraktion: Vom Laborexperiment zur Technikumsanlage
Henschke, M; Pfennig, Andreas ULg

Conference (1998, September 21)

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See detailHet Nederlands in Vlaanderen: van taalzorg naar taalbewustzijn
Vromans, Joseph ULg

Conference given outside the academic context (1998)

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See detailCommunication intitulée "La Philosophie Politique des Actions Positives"
Martiniello, Marco ULg

Scientific conference (1998, September 18)

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