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See detailExtremophiles
Berlemont, Renaud ULg; Gerday, Charles ULg

in Comprehensive Biotechnology (2010)

Extremophiles are organisms which inhabit environments characterized by properties harsh enough to hinder the survival of common cells. They are highly diversified and are classified on the basis of the ... [more ▼]

Extremophiles are organisms which inhabit environments characterized by properties harsh enough to hinder the survival of common cells. They are highly diversified and are classified on the basis of the main extreme property that prevails in the habitat. Six main categories can be distinguished: the thermophiles found in high temperature sites and which can tolerate temperatures sometimes close to that of the boiling point of water; the psychrophiles living in permanently cold habitats with temperatures sometimes well below the freezing point of water; the piezophiles, which tolerate pressure as high as 1000 atm; the halophiles supporting salt concentrations, in some cases, higher than 300gl–1; the acidophiles thriving well at pH sometimes close to zero; and the alkaliphiles, which, on the contrary, tolerate pH largely exceeding neutrality. These organisms are mainly microorganisms and they notably produce enzymes that are adapted to work in unusual conditions often required in biotechnological processes. This confers upon these organisms a very high potential. They are the target of a steadily increasing interest and are nowadays largely used in various industrial applications. [less ▲]

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See detailExtremophiles, early Earth biosphere and exobiology
Javaux, Emmanuelle ULg; Marshall, C.

Poster (2004)

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See detailExtrusion foaming of poly(styrene-co-acrylonitrile)/ clay nanocomposites using supercritical CO2
Urbanczyk, Laetitia; Alexandre, Michaël ULg; Detrembleur, Christophe ULg et al

in Macromolecular Materials and Engineering (2010), 295(10), 915-

Supercritical CO2 has been used as a blowing agent to foam poly(styrene-co-acrylonitrile)-based materials in a single screw extruder specially adapted to allow fluid injection. The cellular morphology ... [more ▼]

Supercritical CO2 has been used as a blowing agent to foam poly(styrene-co-acrylonitrile)-based materials in a single screw extruder specially adapted to allow fluid injection. The cellular morphology depends on foaming temperature, more regular cells being obtained with decreasing extrusion temperature. In a second step, a natural and an organomodified nanoclay have been added for the purpose of imparting some flame resistance to the foamed material. The filler efficiency in reducing sample combustion rate appeared to be dependent on its delamination level inside the matrix and better results were obtained when the organomodified clay was first delaminated in the polymer in an efficient twin screw extruder using water assistance, prior to foaming in the single screw extruder. [less ▲]

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See detailExtrusion tests of 7075 aluminium alloy at high solid fraction
Vaneetveld, Grégory ULg; Rassili, Ahmed ULg; Pierret, Jean-Christophe ULg et al

in International Journal of Material Forming (2008), 1(1), 1019-1022

Thixoforging is a type of semi-solid metal processing at high solid fraction (0.5<fs<1). 7075 aluminium alloy has been used as a feedstock for thixoforging in order to investigate thixoformability of a ... [more ▼]

Thixoforging is a type of semi-solid metal processing at high solid fraction (0.5<fs<1). 7075 aluminium alloy has been used as a feedstock for thixoforging in order to investigate thixoformability of a high performance aluminium alloy at high solid fraction. Higher solid fraction of 7075 alloy is less sensitive to a drop in temperature, avoids metal splash at high speed, allows laminar flow at high speed. Hot tool is used to slow down the solidification rate of the high solid fraction metal by decreasing thermal exchanges. To determine the best parameters to achieve maximum mechanical properties in thixoforging of 7075 aluminum alloy, we need to consider the impact of some parameters such as tool temperature, shear rate. For this, we use extrusion tests with constant speed [1] where these parameters are known. The result of this study is that each parameter has its level of impact on the thixoforging: the temperature of the tool and the deformation rate shouldn't be high to avoid cracks. Thermal exchanges between the material flow and the tool have to be reduced to avoid high solidification rate [2]. [less ▲]

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See detailExuberant inflammatory reaction after an infiltration of platelet-rich plasma (PRP)
Kaux, Jean-François ULg; Croisier, Jean-Louis ULg; LEONARD, Philippe ULg et al

in British Journal of Sports Medicine (2013, June), 47(10 (e3)), 92

Background: PRP, obtained from centrifuged autologous blood, contains a large quantity of growth factors, which may enhance the tissue healing processes. Local infiltration of PRP represents a relatively ... [more ▼]

Background: PRP, obtained from centrifuged autologous blood, contains a large quantity of growth factors, which may enhance the tissue healing processes. Local infiltration of PRP represents a relatively new treatment for tendinopathies. To date, no side effects have been reported after infiltration of PRP to treat tendinopathy. Case report: A 35-year-old patient had a right upper patellar tendinopathy which was resistant to all conservative treatments for more than 6 months. The patient was a type 1 diabetic (well controlled). He had an intratendinous infiltration of 6 mL of PRP (8.105 platelets/mm3, almost no red or white blood cells) after disinfection but without local anaesthetic. Immediately following the infiltration, local cryotherapy was performed for 15 minutes. NSAIDs were avoided, but class-1 or -2 pain-killers were authorised if necessary. A standardised sub-maximal eccentric rehabilitation should have been started 1 week after. However, the patient experienced local swelling with erythema, increased heating and pain which appeared just underneath the patella, but without biological inflammatory syndrome. A great Doppler signal in a thicker patellar tendon was observed by US, but there was no sign of local infectious disease demonstrated by either CT or MRI. However, the local inflammation did not decrease after a progressive 3-week treatment of local cryotherapy, local and oral NSAIDs and colchicine 1 mg. Thus, an insidious infection was suspected, even though there was neither evidence of biological inflammatory syndrome nor sign of infectious lesion on imagery examination. An antibiotic therapy (rifampicine 600 mg + minocycline 100 mg) was initiated for 3 months. Finally, a 3-phase bone scintigraphy suggested the presence of a complex regional pain syndrome type 1 treated by a classical physical therapy and concomitant class-2 pain killers. The evolution was favourable after 6 months of symptomatic treatment, and the pain decreased to a level similar to that before the infiltration of PRP. Discussion/Conclusions: This case report draws attention to potential side effects that are linked to this new therapy by infiltration of platelet rich plasma in case of tendinopathy, in particular when used in patients with type 1 diabetes. Thus, the balance between benefits and risks must be carefully evaluated before using this treatment in patients with type 1 diabetes. Reference: Platelet-rich plasma application in the management of chronic tendinopathies. Acta Orthop Belg 2013; 79: 10-15. [less ▲]

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See detailExuberant inflammatory reaction after an infiltration of platelet-rich plasma to treat tendinopathy
Kaux, Jean-François ULg; Croisier, Jean-Louis ULg; LEONARD, Philippe ULg et al

in Book of abstracts of 18th Annual Congress of the ECSS (2013, June)

Background: PRP, obtained from centrifuged autologous blood, contains a large quantity of growth factors, which may enhance the tissue healing processes. Local infiltration of PRP represents a relatively ... [more ▼]

Background: PRP, obtained from centrifuged autologous blood, contains a large quantity of growth factors, which may enhance the tissue healing processes. Local infiltration of PRP represents a relatively new treatment for tendinopathies. To date, no side effects have been reported after infiltration of PRP to treat tendinopathy. Case report: A 35-year-old patient had a right upper patellar tendinopathy which was resistant to all conservative treatments for more than 6 months. The patient was a type 1 diabetic (well controlled). He had an intratendinous infiltration of 6 mL of PRP (8.105 platelets/mm3, almost no red or white blood cells) after disinfection but without local anaesthetic. Immediately following the infiltration, local cryotherapy was performed for 15 minutes. NSAIDs were avoided, but class-1 or -2 pain-killers were authorised if necessary. A standardised sub-maximal eccentric rehabilitation should have been started 1 week after. However, the patient experienced local swelling with erythema, increased heating and pain which appeared just underneath the patella, but without biological inflammatory syndrome. A great Doppler signal in a thicker patellar tendon was observed by US, but there was no sign of local infectious disease demonstrated by either CT or MRI. However, the local inflammation did not decrease after a progressive 3-week treatment of local cryotherapy, local and oral NSAIDs and colchicine 1 mg. Thus, an insidious infection was suspected, even though there was neither evidence of biological inflammatory syndrome nor sign of infectious lesion on imagery examination. An antibiotic therapy (rifampicine 600 mg + minocycline 100 mg) was initiated for 3 months. Finally, a 3-phase bone scintigraphy suggested the presence of a complex regional pain syndrome type 1 treated by a classical physical therapy and concomitant class-2 pain killers. The evolution was favourable after 6 months of symptomatic treatment, and the pain decreased to a level similar to that before the infiltration of PRP. Discussion/Conclusions: This case report draws attention to potential side effects that are linked to this new therapy by infiltration of platelet rich plasma in case of tendinopathy, in particular when used in patients with type 1 diabetes. Thus, the balance between benefits and risks must be carefully evaluated before using this treatment in patients with type 1 diabetes. Reference: Platelet-rich plasma application in the management of chronic tendinopathies. Acta Orthop Belg 2013; 79: 10-15. [less ▲]

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See detailExuberant inflammatory reaction as a side effect of platelet-rich plasma injection in treating one case of tendinopathy
Kaux, Jean-François ULg; Croisier, Jean-Louis ULg; LEONARD, Philippe ULg et al

in Clinical Journal of Sport Medicine (2014), 24(2), 150-152

Platelet-rich plasma (PRP) contains a large quantity of growth factors, which may enhance tendon healing processes. Local infiltration of PRP represents a relatively new treatment for tendinopathies. To ... [more ▼]

Platelet-rich plasma (PRP) contains a large quantity of growth factors, which may enhance tendon healing processes. Local infiltration of PRP represents a relatively new treatment for tendinopathies. To date, no side effects have been reported after infiltration of PRP to treat tendinopathy. We reported a case of exuberant inflammatory reaction after one infiltration of PRP to treat jumper’s knee in a type 1 diabetic patient who was 35 years old. Injections of PRP must be proposed after careful consideration for patients with morbidity risks linked to insulin-dependent diabetes. [less ▲]

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See detailExurbanisation ou réintégration urbaine des industries et du tertiaire lourd? Comparaison et perspectives
Merenne-Schoumaker, Bernadette ULg

in Bulletin de la Société Géographique de Liège (1983), (19), 53-61

The aim of this study is, initially, to compare the attempts at urban reintegration of certain industrial activities at the present time with the considerable ex-urbanisation movement of activities which ... [more ▼]

The aim of this study is, initially, to compare the attempts at urban reintegration of certain industrial activities at the present time with the considerable ex-urbanisation movement of activities which has been evident since 1960. We then go on to analyse the strenghts and weaknesses of the two trends and seek to define the likely future of the processes and put forward a new urban strategy for a more efficient policy as to receiving certain activities in urban surroundings. [less ▲]

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See detailExzeßgrößen von Mischungen mit polaren und mit wasserstoffbrückenbildenden Komponen¬ten
Egner, K; Gaube, J; Pfennig, Andreas ULg

Conference (1995)

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See detailThe Eye of the Storm: Janet Frame
Delrez, Marc ULg

Conference (1996)

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See detailThe Eye of the Storm: Vision and Survival in A State of Siege
Delrez, Marc ULg

in Delbaere, Jeanne (Ed.) The Ring of Fire: Essays on Janet Frame (1992)

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See detailThe eyelids and metastatic breast carcinoma.
Claessens, Nadine; Pierard, Gérald ULg

in Dermatology : International Journal for Clinical & Investigative Dermatology (2003), 206(2), 181-2

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See detailEyes open, brain shut
Laureys, Steven ULg

in Scientific American (2007), 296(5), 84-89

Recent progress in medical care has greatly increased the number of people who survive acute brain damage. Doctors can save the lives of many patients who suffer trauma to the brain or a lack of oxygen ... [more ▼]

Recent progress in medical care has greatly increased the number of people who survive acute brain damage. Doctors can save the lives of many patients who suffer trauma to the brain or a lack of oxygen, but if the damage is severe, the victim will-slip into a coma, individuals in this condition do not open their eyes; at best, they will show some reflex movements to the limbs. [less ▲]

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See detailAn eYFP Reporter Gene for the Yeast Two-hybrid System
Damon, Coralie; Boxus, Mathieu; Twizere, Jean-Claude ULg et al

in Protein Journal (2013), 32(2), 126-130

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See detailézétimibe (Ezetrol®) chez le patient diabétique
Scheen, André ULg; Radermecker, Régis ULg

in Revue Médicale de Liège (2009), 64(12), 606-611

L’ézétimibe (Ezetrol®) inhibe sélectivement l’absorption intestinale du cholestérol et des phytostérols apparentés. Son mécanisme d’action résulte en un effet hypocholestérolémiant synergique en ... [more ▼]

L’ézétimibe (Ezetrol®) inhibe sélectivement l’absorption intestinale du cholestérol et des phytostérols apparentés. Son mécanisme d’action résulte en un effet hypocholestérolémiant synergique en combinaison avec une statine, inhibant la synthèse hépatique de cholestérol, ce qui a conduit à la commercialisation d’une combinaison fixe ézétimibe-simvastatine (Inegy®). L’ézétimibe a été plus spécifiquement étudié chez les personnes avec un diabète de type 2 qui sont confrontées à un risque cardio-vasculaire particulièrement élevé. Le but de cet article est de présenter les avancées et les particularités en ce qui concerne l’utilisation de l’ézétimibe dans la population diabétique de type 2. [less ▲]

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See detailEL EZLN y sus intérpretes. Resonancias del zapatismo en la academia y en la literatura
Vanden Berghe, Kristine ULg; Huffshmid, Anne; Lefere, Robin

Book published by Universidad Autónoma de la Ciudad de México (UACM) (2011)

Las distintas contribuciones constituyen sendas revisiones de las actitudes y resonancias que la rebelión del EZLN ha suscitado entre científicos, intelectuales y escritores, en México, pero también en ... [more ▼]

Las distintas contribuciones constituyen sendas revisiones de las actitudes y resonancias que la rebelión del EZLN ha suscitado entre científicos, intelectuales y escritores, en México, pero también en otras partes del mundo, desde sus orígenes en 1994 hasta 2006. En la primera parte las contribuciones exploran las resonancias en el ámbito de las ciencias sociales y naturales, luego se pasa a revisar posiciones de intelectuales y finalmente se examina cómo la rebelión zapatista se ha convertido en un tema literario que inspiró a dos escritores españoles y a tres importantes escritores mexicanos. En calidad de cofundador de la Unión de Científicos Comprometidos con la Sociedad (UCCS), Iván Azuara Monter analiza cómo el fenómeno zapatista incidió y resonó sobre todo entre los practicantes de las llamadas ciencias duras y la investigación regional, un tema que ha sido muy poco trabajado hasta hoy. En cambio, Óscar García Agustín y Bernard Duterme se centran en las interpretaciones de la rebelión zapatista que hicieron científicos sociales y políticos de diferentes tendencias y pertenecientes a distintas escuelas. García Agustín toma como hilo conductor las manifestaciones en torno a la conceptualización por parte de algunos académicos de izquierda que se pronunciaron sobre el EZLN, entre ellos John Holloway, Raúl Zibechi, Antonio Negri y Atilio Boron. Duterme también se propone entender lo que distingue y acerca las diversas aproximaciones sociológicas al EZLN pero percibe sobre todo divergencias entre el enfoque marxista por un lado y la perspectiva representada por el sociólogo Alain Touraine por el otro. Por su parte, Anne Huffschmid y Juan Pellicer estudian la interacción entre el nuevo zapatismo y determinados intelectuales quienes, en el sentido de mediadores culturales o comentaristas políticos, han publicado sus opiniones en torno al EZLN. Huffschmid, después de recapitular algunos factores que integran una particular semiótica de la resistencia y que han resonado en distintas escenas de recepción, recrea algunas de las posturas centrales de intelectuales simpatizantes, y también adversarios, en relación con el nuevo zapatismo. Asimismo se ocupa del actual desencantamiento del EZLN con buena parte de la opinión pública, y que explica por quiebres comunicativos y por un giro sectario del grupo armado que parece traicionar a su propio imaginario político. El texto de Juan Pellicer se concentra en las respuestas dadas por Octavio Paz, en cuyo discurso descubre una evolución notable en cuanto a la visión del indígena al que presenta como piedra de toque de la nación en El laberinto de la soledad y al que percibe como un estorbo a la modernización de México en los textos sobre el EZLN. La contribución de Kristine Vanden Berghe vuelve brevemente sobre la postura de Octavio Paz pero lo hace en el marco de un análisis del ensayo de Manuel Vázquez Montalbán, Marcos : El señor de los espejos. El discurso del escritor catalán, por su parte, es abordado en función de su relación intertextual con la novela Turistas del ideal de Ignacio Vidal-Folch, una sátira de los intelectuales que apoyan al EZLN. La imagen tradicional del intelectual paratópico que se identifica con cuantos escapen de las líneas de demarcación dentro de la sociedad, como es el caso de los indígenas, es desplazada en esta sátira a favor de un intelectual hipócrita e inconsciente de sus propias contradicciones. Entre los –relativamente pocos- poetas y escritores que se han referido al EZLN en su creación literaria, también encontramos a tres autores importantes de Chiapas que, directamente interpelados por el movimiento armado, escribieron sobre él. Jan De Vos estudia estos textos que son, respectivamente, de la pluma del cuentista Eraclio Zepeda y de los poetas Juan Bañuelos y Efraín Bartolomé. En la reflexión que nos propone, De Vos suscita la emoción que la lectura del trío chiapaneco le produce y la combina con la mirada crítica que le impone su disciplina de científico social. Procura interrogar a estos autores que admira sobre los motivos y la manera en que se dejaron interpelar por el movimiento rebelde que en 1994 estalló en las montañas y selvas de su tierra natal. [less ▲]

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See detailF III lines in stellar spectra.
Swings, Polydore ULg; Edlén, B.

in Astrophysical Journal (1938), 88(5), 618-621

A term analysis of the Fe III spectrum in the ultraviolet region enables the writers to predict Fe III lines which fall in the astronomically observable region. Several of them are present in B-type stars ... [more ▼]

A term analysis of the Fe III spectrum in the ultraviolet region enables the writers to predict Fe III lines which fall in the astronomically observable region. Several of them are present in B-type stars, both as absorption and as emission lines. [less ▲]

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See detailF-18 FDG PET in infectious diseases in children.
Depas, Gisèle ULg; Decortis, Thierry; Francotte, Nadine et al

in Clinical Nuclear Medicine (2007), 32(8), 593-8

PURPOSE: The aim is to report our observations regarding the role of F-18 FDG PET in children's infectious processes. MATERIAL AND METHODS: A presentation is made of 3 neonatal infections unresponsive to ... [more ▼]

PURPOSE: The aim is to report our observations regarding the role of F-18 FDG PET in children's infectious processes. MATERIAL AND METHODS: A presentation is made of 3 neonatal infections unresponsive to treatment, 2 invasive infections in immunocompromised children, and 1 discitis in an immunocompetent child. PET or PET/CT was performed to address a specific question pertaining to the management of the diseases. Results were correlated with the clinical outcome. The impact on patient management is discussed. RESULTS: In 1 neonate, PET localized the infection in a bone which allowed surgical curettage. In another one, it localized the infection in recently renewed exogenous material and led to subsequent removal. It was negative in the third one, whose evolution was rapidly favorable. In the immunocompromised children, treatment of invasive infection was adapted according to the metabolic inflammatory activity of the disease. In a limping child with slight abnormalities on bone scintigraphy but major misleading involvement on MRI, PET/CT demonstrated hypermetabolism limited to a disc, thus avoiding further invasive procedures. CONCLUSIONS: Although not meant as a first choice examination, F-18 FDG PET should be considered in difficult cases of neonatal infection or in challenging diagnoses like discitis in the young child. It provides more accurate staging and treatment monitoring of the inflammatory process in invasive infections of immunocompromised children. [less ▲]

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