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See detailPrécisions conceptuelles et méthodologiques en matière d’éducation au changement climatique.
Semal, Nathalie ULg

Speech (2003)

Cette allocutiona été présentée lors d'une réunion de travail organisée dans le cadre de la Convention des Nations Unies sur le Changement Climatique, dédiée à l'implémentation de son article 6, relatif à ... [more ▼]

Cette allocutiona été présentée lors d'une réunion de travail organisée dans le cadre de la Convention des Nations Unies sur le Changement Climatique, dédiée à l'implémentation de son article 6, relatif à l'éducation et à la sensibilisation du public au réchauffement climatique. Elle tente de développer quelques principes de base, tirés des enseignements des expériences menées en éducation relative à l'environnement. [less ▲]

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See detailTime correlations and 1/f behavior in backscattering radar reflectivity measurements from cirrus cloud ice fluctuations
Ivanova, K.; Ackerman, T. P.; Clothiaux, E. E. et al

in Journal of Geophysical Research. Atmospheres (2003), 108(D9),

[1] The state of the atmosphere is governed by the classical laws of fluid motion and exhibits correlations in various spatial and temporal scales. These correlations are crucial to understand the short ... [more ▼]

[1] The state of the atmosphere is governed by the classical laws of fluid motion and exhibits correlations in various spatial and temporal scales. These correlations are crucial to understand the short- and long-term trends in climate. Cirrus clouds are important ingredients of the atmospheric boundary layer. To improve future parameterization of cirrus clouds in climate models, it is important to understand the cloud properties and how they change within the cloud. We study correlations in the fluctuations of radar signals obtained at isodepths of winter and fall cirrus clouds. In particular, we focus on three quantities: (1) the backscattering cross-section, (2) the Doppler velocity, and (3) the Doppler spectral width. They correspond to the physical coefficients used in Navier Stokes equations to describe flows, i.e., bulk modulus, viscosity, and thermal conductivity. In all cases we find that power law time correlations exist with a crossover between regimes at about 3 to 5 min. We also find that different type of correlations, including 1/f behavior, characterize the top and the bottom layers and the bulk of the clouds. The underlying mechanisms for such correlations are suggested to originate in ice nucleation and crystal growth processes. [less ▲]

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See detailSTUDY OF SOME FACTORS INFLUENCING BIODEGRADATION OF ISOPROPYLBENZENE BY RHODOCOCCUS ERYTHROPOLIS
Aldric, Jean-Marc ULg; Destain, Jacqueline; Thonart, Philippe ULg

(2003, May 06)

THE PRESENT STUDY EXAMINES THE EFFECT OF VARIOUS FACTORS ON THE BIODEGRADATION OF IPB BY RHODOCOCCUS ERYTHROPOLYS. BY THE IMPLEMENTED PLAN OF PLACKETT AND BURMAN, A POSITIVE EFFECT OF IRON, NEUTRAL pH AND ... [more ▼]

THE PRESENT STUDY EXAMINES THE EFFECT OF VARIOUS FACTORS ON THE BIODEGRADATION OF IPB BY RHODOCOCCUS ERYTHROPOLYS. BY THE IMPLEMENTED PLAN OF PLACKETT AND BURMAN, A POSITIVE EFFECT OF IRON, NEUTRAL pH AND ETHANOL ON THE BIODEGRADATION COULD BE DEMONSTRATED. COMPLEMENTARY EXPERIMENTS IN A BIOREACTOR SHOW THAT ETHANOL, USED AS COSUBSTRATE IN BUFFERED MEDIUM, ALLOWS CELL GROWTH WHILE OPTIMIZING BIODEGRADATION OF IPB. [less ▲]

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See detailLes nouveaux antifongiques
Hayette, Marie-Pierre ULg

in Noso-Bulles, bulletin d'information du comité d'hygiène hospitalière et du GGA du CHU de liège (2003)

L'article est une mise au point sur les antifongiques avec leurs indications, toxicité, posologie et critères de remboursement.

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See detailOrigine des troubles morphosyntaxiques chez des enfants dysphasiques
Maillart, Christelle ULg

Doctoral thesis (2003)

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See detailCoupling GIS with database for hydrogeological mapping.
Bouezmarni, Mohamed ULg

Conference (2003, May)

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See detailCaractérisation et utilisation du micro-habitat du saumon atlantique (Salmo salar) selon la stucture turbulente del'écoulement.
Brown, Julie; Boyer, Claudine; Enders, Eva et al

Conference (2003, May)

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See detailPrevention of malnutrition in older people during and after hospitalisation: results from a randomised controlled clinical trial
Gazzotti, C.; Arnaud-Battandier, F.; Parello, M. et al

in Age & Ageing (2003), 32(3), 321-325

Objective: to prevent the occurrence of weight loss during hospitalisation and following discharge by daily oral supplementation. Design: in a prospective, randomised, controlled study of 80 patients aged ... [more ▼]

Objective: to prevent the occurrence of weight loss during hospitalisation and following discharge by daily oral supplementation. Design: in a prospective, randomised, controlled study of 80 patients aged 75 or more, and at risk of undernutrition based on their initial Mini Nutritional Assessment score, patients were randomised into a control group or one receiving oral supplementation. The intervention was a prescription of 200 ml sweet or salty sip feed twice daily (500 kcal, 21 g protein per day) throughout hospitalisation and convalescence. Nutritional status was assessed at baseline and after 2 months using Mini Nutritional Assessment and body weight record. Results: compliance with oral supplementation was good and daily extra energy intake was 407+/-184 kcal. On day 60, significant weight loss from upon admission was observed in the control group (-1.23+/-2.5 kg; P=0.01), but not in the supplemented group (0.28+/-3.8 kg; NS). At the end of the study, Mini Nutritional Assessment scores were higher in the supplemented group than in the control group (23.5+/-3.9 versus 20.8+/-3.6; P<0.01). Conclusion: use of daily oral supplementation during and after hospitalisation maintains body weight and increases Mini Nutritional Assessment score in patients at risk of undernutrition. [less ▲]

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See detailLe role de la chirurgie dans la prevention d'un accident vasculaire cerebral d'origine carotidienne
Limet, Raymond ULg

in Revue Médicale de Liège (2003), 58(5), 293-6

Early and late results of North American Trial (NASCET) demonstrate the efficacy of surgery to prevent major ipsilateral stroke in symptomatic patients; the benefit is proportional to the degree of ... [more ▼]

Early and late results of North American Trial (NASCET) demonstrate the efficacy of surgery to prevent major ipsilateral stroke in symptomatic patients; the benefit is proportional to the degree of stenosis. In asymptomatic patients, the benefit is real, but quantitavivement less pronounced. [less ▲]

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See detailPrevention secondaire des accidents ischemiques coronariens par la chirurgie de pontage aorto-coronaire
Radermecker, Marc ULg; Limet, Raymond ULg

in Revue Médicale de Liège (2003), 58(5), 283-6

Coronary artery bypass surgery has shown its superiority on other therapeutic options in specific but frequent indications such as left main lesions, multivessel disease with alteration of ventricular ... [more ▼]

Coronary artery bypass surgery has shown its superiority on other therapeutic options in specific but frequent indications such as left main lesions, multivessel disease with alteration of ventricular function, proximal lesions of the LAD, and multivessel diseases in diabetic patients. After reviewing the epidemiology of coronary artherosclerosis, we emphasize the efficacy of the surgical treatment compared to medical or interventional therapy for preventing ischemic events. The results derived from randomized studies may be even further improved by the implementation of beating heart surgery and the systematic use of multiple arterial conduits. [less ▲]

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See detailPrevention secondaire apres syndrome coronarien aigu
Legrand, Victor ULg; Gach, Olivier ULg; Martinez, Christophe ULg

in Revue Médicale de Liège (2003), 58(5), 279-82

Acute coronary syndromes are a major health care problem which remains associated with high rates of mortality, myocardial infarction and rehospitalisation after hospital discharge for acute treatment ... [more ▼]

Acute coronary syndromes are a major health care problem which remains associated with high rates of mortality, myocardial infarction and rehospitalisation after hospital discharge for acute treatment. The general practitioner has a critical role in the management of these patients. Physicians have to ensure an adequate control of all coronary risk factors. Systematic use of statines and aspirin is recommended. Also, the use of clopidogrel, fibrates, beta blockers and ACE inhibitors should be considered in some circumstances. Conversely, hormone replacement therapy in women, antioxydants and nitrates in the absence of angina are ineffective. [less ▲]

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See detailStudy of complex carbides obtained after solidification and thermal treatment in High Speed Steels
Tchuindjang, Jérôme Tchoufack ULg; Lecomte-Beckers, Jacqueline ULg

in Proceedings des journées annuelles de la Société belge de physique SBP-BSP (27 et 28 mai 2003) (2003, May)

High-speed steels (HSS) rolls are used in front finishing stands of hot strip mills. Good wear resistance and hardness at high temperature are defining characteristics of HSS. Many carbides are present in ... [more ▼]

High-speed steels (HSS) rolls are used in front finishing stands of hot strip mills. Good wear resistance and hardness at high temperature are defining characteristics of HSS. Many carbides are present in these alloys, each having different effects upon the final properties of HSS. As a result, the nature, the morphology and the amount of these carbides are factors of important concern. Optical microscopy combined with electron microscopy lead to quicker identification and characterization of HSS carbides. [less ▲]

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See detailL'exercice du contrôle de gestion en contexte PME : étude comparée des cas français, canadien et belge
Van Caillie, Didier ULg

in Association Francophone de Comptabilité (Ed.) Actes du 23ème Congrès de l'Association Francophone de Comptabilité (2003, May)

This paper compares practices in terms of management control emerging from field researches conducted respectively in France, Canada and Belgium and proposes a global synthetic model describing ... [more ▼]

This paper compares practices in terms of management control emerging from field researches conducted respectively in France, Canada and Belgium and proposes a global synthetic model describing specifcities of these practices. [less ▲]

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See detailTransactivation of vimentin by beta-catenin in human breast cancer cells
Gilles, Christine ULg; Polette, M.; Mestdagt, Mélanie ULg et al

in Cancer Research (2003), 63(10), 2658-2664

The cytoplasmic and nuclear redistribution of beta-catenin and the de novo expression of vimentin are frequently involved in the epithelial-to-mesenchymal transition associated with increased invasive ... [more ▼]

The cytoplasmic and nuclear redistribution of beta-catenin and the de novo expression of vimentin are frequently involved in the epithelial-to-mesenchymal transition associated with increased invasive/migratory properties of epithelial cells. Because beta-catenin can act as a coactivator of transcription through its binding to the T-cell factor (TCF)/lymphoid enhancer factor 1 transcription factor family, we have explored the possibility that beta-catenin/TCF could directly transactivate vimentin. We first compared vimentin expression in relation with the localization of beta-catenin in eight breast cancer cell lines displaying various degrees of invasiveness and in a model of cell migration using human mammary MCF10A cells. We could thus show a cytoplasmic and/or nuclear distribution of beta-catenin in invasive/migratory cells expressing vimentin, but not in noninvasive/stationary vimentin-negative cell lines. In addition, the human vimentin promoter was found to be up-regulated by beta-catenin and TCF-4 cotransfection. Varying with the cellular background, a diminution of this up-regulation was observed when the putative beta-catenin/TCF binding site of the vimentin promoter was mutated. Our results therefore demonstrate that the vimentin promoter is a target of the beta-catenin/TCF pathway and strongly suggest an implication of this regulation in epithelial cell migration/invasion. [less ▲]

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See detailDépistage et détection précoce des cancers : Pourquoi? Comment? Lesquels? Qui et où? A quel prix?
Castronovo, Vincenzo ULg

in Revue Médicale de Liège (2003), 58(5), 310-3

Cancer is fighting with cardiovascular diseases for the first place as the number one killer of humans living in industrialized countries. Several factors contribute to the high incidence of cancers. The ... [more ▼]

Cancer is fighting with cardiovascular diseases for the first place as the number one killer of humans living in industrialized countries. Several factors contribute to the high incidence of cancers. The spectacular increase in life expectancy of individuals living in these areas is certainly one of the major causes that explain the steady rise of the number of patients suffering and dying from cancer. For most cancers, when the issue is fatal, it is usually after a long morbidity period often very difficult for the patient and with heavy public health consequences. Thus, a major challenge that the health professionals are facing is the reduction of malignant disease incidence. Primary prevention would be certainly the most successful strategy. However, its implementation is of extreme difficulty. Secondary prevention, non-exclusive to the primary one, represents probably the best approach to decrease morbidity and mortality linked to these diseases. Screening and early diagnosis are the two axes of such a strategy. The first one concerns the detection of a malignant lesion in an asymptomatic patient. Early diagnosis implies to consider with attention and explore any signs or symptoms that can be easily missed by the patient or the doctor and, hence, could be the first indication of a progressing cancer. The impact of cancer screening on the mortality rate due to cancer is still the subject of intense debates, while the efficacy of early diagnosis is unanimously recognized. Still, it is cancer screening that is the center of most attentions.... [less ▲]

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See detailEstimation of fructose, glucose and sucrose released by inulin hydrolysis during food processing.
Chevalier, Jean-Paul; Paquot, Michel; Fougnies, C. et al

Poster (2003, May)

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See detailStudy of a model low-fat salad dressing formulated with inulin.
Blecker, Christophe ULg; Marti, J.; Chevalier, Jean-Paul et al

Poster (2003, May)

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See detailBioresorbable and bioactive composite materials based on polylactide foams filled with and coated by Bioglass (R) particles for tissue engineering applications
Boccaccini, Aldo R.; Notingher, I.; Maquet, Véronique et al

in Journal of Materials Science: Materials in Medicine (2003), 14(5), 443-450

Poly(DL-lactide) (PDLLA) foams and bioactive glass (Bioglass®) particles were used to form bioresorbable and bioactive composite scaffolds for applications in bone tissue engineering. A thermally induced ... [more ▼]

Poly(DL-lactide) (PDLLA) foams and bioactive glass (Bioglass®) particles were used to form bioresorbable and bioactive composite scaffolds for applications in bone tissue engineering. A thermally induced phase separation process was applied to prepare highly porous PDLLA foams filled with 10wt% Bioglass® particles. Stable and homogeneous layers of Bioglass® particles on the surface of the PDLLA/Bioglass® composite foams as well as infiltration of Bioglass® particles throughout the porous network were achieved using a slurry-dipping technique. The quality of the bioactive glass coatings was reproducible in terms of thickness and microstructure. In vitro studies in simulated body fluid (SBF) were performed to study the formation of hydroxyapatite (HA) on the surface of the PDLLA/Bioglass® composites, as an indication of the bioactivity of the materials. Formation of the HA layer after immersion in SBF was confirmed by X-ray diffraction and Raman spectroscopy measurements. The rate of HA formation in Bioglass®-coated samples was higher than that observed in non-coated samples. SEM analysis showed that the HA layer thickness rapidly increased with increasing time in SBF in the Bioglass®-coated samples. The high bioactivity of the developed composites suggests that the materials are attractive for use as bioactive, resorbable scaffolds in bone tissue engineering. [less ▲]

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