References of "2011"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailÉnergie nécessaire au broyage de la biomasse et des produits densifiés
Temmerman, Michaël ULg

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2011)

La littérature concernant la consommation énergétique du broyage dans les industries minières montre que cette problématique a été, et est encore, étudiée par de nombreux auteurs. Différents modèles de ... [more ▼]

La littérature concernant la consommation énergétique du broyage dans les industries minières montre que cette problématique a été, et est encore, étudiée par de nombreux auteurs. Différents modèles de broyage sont donc disponibles pour ces industries, en particulier pour le broyage des minerais. Les principaux modèles et certaines de leurs évolutions sont repris dans la présente revue. Le broyage de la biomasse quant à lui a été bien moins étudié. Quelques études ont néanmoins porté sur la mesure des consommations énergétiques engendrées par le broyage de biomasses particulières, dans des systèmes particuliers. Rares sont celles qui prennent en compte suffisamment de paramètres relatifs à la matière entrante et sortante (granulométrie, humidité, origine, etc.) ou les caractéristiques du système de broyage. Pratiquement, aucun modèle de broyage de la biomasse n’a donc été proposé. Concernant le broyage des produits densifiés, aucune donnée ne semble disponible. À la lueur des théories de broyage de l’industrie minière, cette étude propose donc les paramètres à prendre en compte pour une éventuelle modélisation du broyage de la biomasse et des produits densifiés. Mots-clés. Broyage, biomasse, pellets, briquettes, théories [less ▲]

Detailed reference viewed: 5 (2 ULg)
Full Text
Peer Reviewed
See detailX-ray CT study of the influence of liquid viscosity on fluid phase distribution in modular catalytic packings
Aferka, Saïd ULg; Viva, Aurora; Brunazzi, Elisabetta et al

in Chemical Engineering Transactions (2011), 24

In the frame of the present study, the influence of liquid viscosity on liquid holdup distribution in a packed column equipped with the modular catalytic packing Katapak-SP 11 is measured. Water and an ... [more ▼]

In the frame of the present study, the influence of liquid viscosity on liquid holdup distribution in a packed column equipped with the modular catalytic packing Katapak-SP 11 is measured. Water and an aqueous solution of glycerine, the viscosity of which equals 10 cP, are used as feed liquids. The estimation of liquid holdup is of great interest due to its strong influence on pressure drop, on solid wetting and on heat and mass transfer coefficients. The experimental technique used is high energy X-ray tomography, which is a unique technique to visualize the local liquid distribution inside the complex structure of packings and to quantify the liquid holdup at different scales. [less ▲]

Detailed reference viewed: 50 (9 ULg)
Peer Reviewed
See detailSelf-DNA release mediates the adjuvant effects of aluminum salts
Marichal, Thomas ULg; Ohata, K; Bedoret, Denis et al

Poster (2011)

Detailed reference viewed: 3 (0 ULg)
Full Text
Peer Reviewed
See detailEulerian Formulation of Constrained Elastica
Denoël, Vincent ULg; Detournay, Emmanuel

in International Journal of Solids and Structures (2011), 136

Detailed reference viewed: 26 (2 ULg)
Full Text
Peer Reviewed
See detailSubject-specific cardiovascular system model-based identification and diagnosis of septic shock with a minimally invasive data set: animal experiments and proof of concept.
Chase, J Geoffrey; Lambermont, Bernard ULg; Starfinger, Christina et al

in Physiological Measurement (2011), 32(1), 65-82

A cardiovascular system (CVS) model and parameter identification method have previously been validated for identifying different cardiac and circulatory dysfunctions in simulation and using porcine models ... [more ▼]

A cardiovascular system (CVS) model and parameter identification method have previously been validated for identifying different cardiac and circulatory dysfunctions in simulation and using porcine models of pulmonary embolism, hypovolemia with PEEP titrations and induced endotoxic shock. However, these studies required both left and right heart catheters to collect the data required for subject-specific monitoring and diagnosis-a maximally invasive data set in a critical care setting although it does occur in practice. Hence, use of this model-based diagnostic would require significant additional invasive sensors for some subjects, which is unacceptable in some, if not all, cases. The main goal of this study is to prove the concept of using only measurements from one side of the heart (right) in a 'minimal' data set to identify an effective patient-specific model that can capture key clinical trends in endotoxic shock. This research extends existing methods to a reduced and minimal data set requiring only a single catheter and reducing the risk of infection and other complications-a very common, typical situation in critical care patients, particularly after cardiac surgery. The extended methods and assumptions that found it are developed and presented in a case study for the patient-specific parameter identification of pig-specific parameters in an animal model of induced endotoxic shock. This case study is used to define the impact of this minimal data set on the quality and accuracy of the model application for monitoring, detecting and diagnosing septic shock. Six anesthetized healthy pigs weighing 20-30 kg received a 0.5 mg kg(-1) endotoxin infusion over a period of 30 min from T0 to T30. For this research, only right heart measurements were obtained. Errors for the identified model are within 8% when the model is identified from data, re-simulated and then compared to the experimentally measured data, including measurements not used in the identification process for validation. Importantly, all identified parameter trends match physiologically and clinically and experimentally expected changes, indicating that no diagnostic power is lost. This work represents a further with human subjects validation for this model-based approach to cardiovascular diagnosis and therapy guidance in monitoring endotoxic disease states. The results and methods obtained can be readily extended from this case study to the other animal model results presented previously. Overall, these results provide further support for prospective, proof of concept clinical testing with humans. [less ▲]

Detailed reference viewed: 39 (9 ULg)
See detailPhysical modelling of overbank flows with a groyne set on the floodplain
Peltier, Yann ULg

Doctoral thesis (2011)

Detailed reference viewed: 19 (5 ULg)
Full Text
Peer Reviewed
See detailOptimizing early nutritional support based on recent recommendations in VLBW infants and postnatal growth restriction
SENTERRE, Thibault ULg; Rigo, Jacques ULg

in Journal of Pediatric Gastroenterology and Nutrition (2011), 53(5), 536-542

Detailed reference viewed: 19 (1 ULg)
Full Text
Peer Reviewed
See detailLe melanome du sujet age.
Franchimont, Claudine ULg; PIERARD, Gérald ULg

in Revue Médicale de Liège (2011), 66(1), 34-40

Malignant melanoma developed after 60 years of age is not a rare neoplasm. It is mainly but not exclusively represented by the lentigo maligna (LM) and the invasive melanoma developed on LM (LMM). Men are ... [more ▼]

Malignant melanoma developed after 60 years of age is not a rare neoplasm. It is mainly but not exclusively represented by the lentigo maligna (LM) and the invasive melanoma developed on LM (LMM). Men are more often affected, and chronic sun exposure is the main cause. The diagnosis relies on the clinical, dermoscopic and dermatopathologic examinations. Surgical excision is recommended but alternative treatments are possible in case of contra-indication. [less ▲]

Detailed reference viewed: 21 (3 ULg)
Full Text
Peer Reviewed
See detailDetermination of enantiomeric purity of S-amlodipine by chiral LC with emphasis on reversal of enantiomer elution order.
Dossou, Katina Sourou Sylvestre ULg; Edorh, P. A.; Chiap, Patrice ULg et al

in Journal of Separation Science (2011), 34

An LC method was developed and prevalidated for the enantiomeric purity determination of S-amlodipine in polar organic solvent chromatography using a chlorine-containing cellulose-based chiral stationary ... [more ▼]

An LC method was developed and prevalidated for the enantiomeric purity determination of S-amlodipine in polar organic solvent chromatography using a chlorine-containing cellulose-based chiral stationary phase (CSP). The concentration of formic acid (FA) (0.01-0.2%) in the mobile phase containing acetonitrile as the main solvent was found to influence the elution order of amlodipine enantiomers as well as the enantioresolution. A reversal of the enantiomer elution order of amlodipine was only observed with chiral stationary phases with both electron-withdrawing (chloro) and electron-donating groups (methyl) on the phenyl moieties of the chiral selector, namely cellulose tris(3-chloro-4-methylphenylcarbamate) and cellulose tris(4-chloro-3-methylphenylcarbamate). The highest enantioresolution (R(s) : 4.1) value was obtained at the lowest FA concentration (0.01%) using cellulose tris(4-chloro-3-methylphenylcarbamate) as the chiral selector and the enantiomeric impurity, R-amlodipine, eluted first under these conditions. Therefore, the mobile phase selected for the prevalidation of the method consisted of ACN/0.1% DEA/0.01% FA and the temperature was set at 25 degrees C. The method was prevalidated by means of the strategy based on the total measurement error and the accuracy profile. The method was found to be selective and the limit of quantification was found to be about 0.05% for R-amlodipine, while the limit of detection was close to 0.02%. [less ▲]

Detailed reference viewed: 31 (2 ULg)
Full Text
Peer Reviewed
See detailFuran Formation from Lipids in Starch-Based Model Systems, As Influenced by Interactions with Antioxidants and Proteins.
Owczarek-Fendor, A.; De Meulenaer, B.; Scholl, Georges ULg et al

in Journal of Agricultural and Food Chemistry (2011), 59(6), 2368-2376

The formation of furan upon sterilization of a lipid-containing starch gel was investigated in the presence of various antioxidants, namely, alpha-tocopherol, beta-carotene, and ascorbic acid, with and ... [more ▼]

The formation of furan upon sterilization of a lipid-containing starch gel was investigated in the presence of various antioxidants, namely, alpha-tocopherol, beta-carotene, and ascorbic acid, with and without proteins. Results indicated that alpha-tocopherol did not significantly influence furan formation from oxidized lipids. beta-Carotene, suggested previously to be a furan precursor itself, did influence the generation of furan in a concentration-dependent manner, although to a limited extent. Surprisingly, the presence of lipids seemed to limit the furan generation from beta-carotene. Interestingly, the addition of ascorbic acid to the emulsions containing soybean or sunflower oils considerably enhanced the formation of furan from these oils. This was also the case when fresh oils were applied, shown previously to be nearly unable to generate furan. This observation can be explained by an intensified ascorbic acid degradation stimulated by the presence of lipids. [less ▲]

Detailed reference viewed: 37 (15 ULg)
Full Text
Peer Reviewed
See detailTomographic measurement of liquid hold up and effective interfacial area distributions in a column packed with high performance structured packings
Aferka, Saïd ULg; Viva, Aurora; Brunazzi, Elisabetta et al

in Chemical Engineering Science (2011), 66

In this paper, we report on the use of a high energy and high resolution X-ray tomograph to visualize and quantify the distribution of liquid hold up and of gas-liquid interfacial area in a 0.1m diameter ... [more ▼]

In this paper, we report on the use of a high energy and high resolution X-ray tomograph to visualize and quantify the distribution of liquid hold up and of gas-liquid interfacial area in a 0.1m diameter column filled with MellapakPlus 752.Y packing elements. A standard air-water system at room temperature and atmospheric pressure was used. Tomographic measurements have been carried out in a large number of packing cross sections situated at different heights between the top and the bottom of the packed column, giving access to the evolution of axial profiles of liquid hold up and of gas-liquid interfacial area as a function of the operating conditions. Gas-liquid interfacial area values were also measured by a chemical method (CO2 absorption from air into a caustic solution). For the first time, a whole set of gas-liquid interfacial area values evaluated from tomographic images are interestingly compared with values measured by a chemical method. A comparison is also presented with literature models. [less ▲]

Detailed reference viewed: 42 (11 ULg)
Full Text
Peer Reviewed
See detailThree-dimensional void space structure of activated carbon packed beds
Almazan Almazan, Maria Del Carmen; Léonard, Angélique ULg; Job, Nathalie ULg et al

in Journal of Porous Materials (2011), 18

Detailed reference viewed: 43 (10 ULg)
Full Text
Peer Reviewed
See detailClosure to "Energy Dissipation and Turbulent Production in Weak Hydraulic Jumps" by E. Mignot and R. Cienfuegos
Mignot, E.; Peltier, Yann ULg; Cienfuegos, R.

in Journal of Hydraulic Engineering (2011), 137(8), 862-863

Detailed reference viewed: 14 (0 ULg)
Full Text
Peer Reviewed
See detailSquatting test: a dynamic postural manoeuvre to study baroreflex sensitivity.
SCHEEN, André ULg; PHILIPS, Jean-Christophe ULg

in Clinical autonomic research : official journal of the Clinical Autonomic Research Society (2011)

INTRODUCTION: Squatting is an active posture test that can be used to assess baroreflex sensitivity. Indeed, the shift from squatting to standing imposes a major orthostatic stress leading to rapid and ... [more ▼]

INTRODUCTION: Squatting is an active posture test that can be used to assess baroreflex sensitivity. Indeed, the shift from squatting to standing imposes a major orthostatic stress leading to rapid and large changes in arterial blood pressure (BP) and heart rate (HR) allowing precise baroreflex assessment. MATERIAL AND METHODS: BP and HR can be continuously and non-invasively monitored with a Finapres device. RESULTS: The standing to squatting transition is accompanied by rises in BP, pulse pressure and cardiac output, mainly due to increased venous return, and by a secondary reduction in HR. Conversely, the squatting to standing transition is associated with an immediate drop in BP and both reflex tachycardia and vasoconstriction. This mirror changes in BP and HR, mimicking those observed with the classical pharmacological approach using vasopressor/vasodilating agents, allows the calculation of the so-called baroreflex gain. DISCUSSION: The present review describes the haemodynamic changes occurring in normal subjects during the shifts from standing to squatting and from squatting to standing and discusses the underlying cardiovascular and autonomic mechanisms. CONCLUSION: This careful analysis in healthy individuals should help in the understanding of disturbances that may be observed in patients with autonomic dysfunction, such as in diabetic patients with cardiovascular autonomic neuropathy. [less ▲]

Detailed reference viewed: 14 (0 ULg)
Full Text
Peer Reviewed
See detailA partial hybrid stress solid-shell element for the analysis of laminated composites
Rah, Kamran; Van Paepegem, Wim; Habraken, Anne ULg et al

in Computer Methods in Applied Mechanics and Engineerinrg (2011), 200(49-52), 35263539

In this paper a low order partial hybrid stress solid-shell element based on the composite energy functional for the analysis of laminated composite structures is presented. This solid-shell element has ... [more ▼]

In this paper a low order partial hybrid stress solid-shell element based on the composite energy functional for the analysis of laminated composite structures is presented. This solid-shell element has eight nodes with only displacement degrees of freedoms, and three-dimensional constitutive models can be directly employed in the present formulation without any additional treatment. The assumed interlaminar stress field provides very accurate interlaminar stress calculation through the element thickness. These elements can be stacked on top of each other to model multilayer structures, fulfilling the interlaminar stress continuity at the interlayer surfaces and zero traction conditions on the top and bottom surfaces of the laminate. The present solid-shell does not show the transverse shear, trapezoidal and thickness locking phenomenon. [less ▲]

Detailed reference viewed: 16 (1 ULg)
Peer Reviewed
See detailSedimentary and diagenetic processes related to mid-Paleocene exposure surface, effects on the carbonate reservoir properties: Southeastern Pyrenean carbonate platform, Spain
Loisy, Corinne; Cerepi, Adrian; Da Silva, Anne-Christine ULg et al

in 13ème congrès Français de Sédimentologie, Dijon. Livre des résumés, 2011 (2011)

Detailed reference viewed: 12 (1 ULg)
Full Text
Peer Reviewed
See detailUne précision constitutionnelle du domaine d'application de la revalorisation des récompenses? Note sous C.const. 16 septembre 2010
Laruelle, Julie ULg

in Revue de Jurisprudence de Liège, Mons et Bruxelles (2011)

Detailed reference viewed: 19 (5 ULg)
Full Text
Peer Reviewed
See detailCoping with Minority Status: Responses to Exclusion and Inclusion
Martiniello, Marco ULg

in Contemporary Sociology: a Journal of Reviews (2011), 40(2), 158-159

Detailed reference viewed: 42 (7 ULg)
Full Text
Peer Reviewed
See detailNotched Specimens Fracture Prediction with an Advanced GTN Model
Fansi Tchonko, Joseph ULg; Ben Bettaieb, Mohamed ULg; Balan, Tudor et al

in Key Engineering Materials [=KEM] (2011), 488-489

Detailed reference viewed: 37 (8 ULg)