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See detailLNCaP prostate cancer imaging with biologically functionalized gold nanoparticles in 2D and 3D cell culture
Schol, Daureen ULiege; Fleron, Maximilien ULiege; Greisch, Jean - François et al

in Anticancer Research (2008), 28

One of the main objectives of this project is to realize and validate a versatile lab system composed of functionalized nanoparticles for diagnosis of different superficial and accessible cancers, e.g ... [more ▼]

One of the main objectives of this project is to realize and validate a versatile lab system composed of functionalized nanoparticles for diagnosis of different superficial and accessible cancers, e.g. prostate cancer. Gold nanorods have been synthesized and functionalized with antibodies targeting specific antigens on cancer cell lines. [less ▲]

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See detailLNG carrier – new innovative product
Constantinescu, A.; Rigo, Philippe ULiege; Guillaume Combecave, J.-L.

in IMPROVE Workshop (EU Project FP6 n°031382), DUBROVNIK 17-18 Sept. 2009, Croatia, Editor V. Zanic – Univ. of Zagreb (2009, September)

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See detailLNG carrier- Structural design aspects
Amrane, Amirouche ULiege; Constantinescu, Adrien; Bair, Frédéric ULiege et al

in IMPROVE Workshop (EU Project FP6 n°031382), DUBROVNIK 17-18 Sept. 2009, Croatia, Editor V. Zanic – Univ. of Zagreb, pp90-95 (Vol I) (2009, September)

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See detailThe LNQ25 and ELN PVT Metrics Exhibit a Good Sensitivity to Sleep Deprivation and are Independent from the Subject
Latour, Philippe ULiege; Van Droogenbroeck, Marc ULiege

Poster (2017, October 09)

Introduction Performance of people undergoing critical tasks (like driving) may be impaired completely by the lowering of their vigilance level, due to sleep deprivation for instance. This reduction of ... [more ▼]

Introduction Performance of people undergoing critical tasks (like driving) may be impaired completely by the lowering of their vigilance level, due to sleep deprivation for instance. This reduction of performance may be measured by metrics computed from the reaction times (RT) recorded during a 10min Psychomotor Vigilance Test (PVT). Here, we analyze and compare the sensitivity to sleep deprivation and the subject dependent variability of the PVT metrics performance, with a special emphasis on the time interval sizes. Materials and Methods Individuals (22 volunteers; 11 males, 11 females, mean 22.2y., range 19-34 years) follow an uninterrupted 28h sleep deprivation standard PVT protocol during which they achieved two groups of three PVT sessions (in different conditions). The first PVT of each group is in Non-SDP condition (9h30 and 10h30 Day 1) and the second and third PVT of each group are in SDP condition (2h30, 3h30, 10h30 and 11h30 day 2). The subjects fill a sleep journal during the week before the experiment. We checked that they had a normal sleep-wake cycle with no sleep deprivation, jet-lag or shift work and no medication. During the PVT of the first group, the subjects were wearing the glasses of the Phasya’s Drowsimeter. We compute the usual PVT metrics; meanRT, meanRS (Reaction Speed) and LN500 (500ms lapses number). We also compute LNQ25 (adaptive lapses number computed with a subject dependent threshold) and ELN (Expected Lapse Number, computed from a subject-dependent estimation of the lapse probability). Results We use the “Effect Size” (ES, ratio of the mean by the standard deviation of the difference of metrics in the SDP and Non-SDP conditions) to assess the sensitivity to sleep deprivation. For the 10min (resp. 1min, 3min) interval, the ES of LNQ25 and ELN are respectively 1.38 (resp. 0.95, 1.22) and 1.35 (resp. 0.85, 1.14), the ES of meanRS, meanRT and LN500 are 1.23 (resp. 0.91, 1.09), 0.81 (resp. 0.54, 0.68) and 0.85 (resp. 0.63, 0.77). We classify the intervals on which metrics are computed as SDP or non-SDP. We use a fixed threshold for the metrics, independent of the subject. In the ROC curves, the TPR (for a FPR of 10%) assesses the quality of the classification, and then also the subject independence. For the 10min (resp. 1min, 3min) interval, the TPR of LNQ25 and ELN are respectively 0.86 (resp. 0.56, 0.75) and 0.83 (resp. 0.58, 0.75), the TPR of meanRS, meanRT and LN500 are 0.42 (resp. 0.38, 0.41), 0.40 (resp. 0.39, 0.40) and 0.42 (resp. 0.24, 0.30). Conclusions We demonstrate that LNQ25 and ELN enable a quite good classification of the SDP condition for time intervals greater than or equal to 3min, independently of the subject. On the other hand, these metrics provide also a good sensitivity to sleep deprivation. They outperform the usual metrics for both criteria. For time intervals below 3min, the performances degrade first progressively and then much more quickly below 1min. [less ▲]

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See detailLo specchio secondario adattivo dell’LBT: calibrazione del prototipo P45
Ricci, Davide ULiege

Master's dissertation (2006)

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See detailLoad modulation strategies of residential heat pumps for demand-response programs with different thermal storage options
Georges, Emeline ULiege; Lemort, Vincent ULiege

in Proceedings of the 4th International High Performance Buildings Conference at Purdue (2016, July)

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See detailLoad Shedding Controllers against Voltage Instability: a comparison of designs
Moors, Cedric; Lefebvre, Daniel; Van Cutsem, Thierry ULiege

in Proc. IEEE Porto Power Tech Conference (2001, September)

This paper discusses and compares three types of undervoltage load shedding closed-loop controllers in terms of performances and design computational effort. We first describe the various controllers and ... [more ▼]

This paper discusses and compares three types of undervoltage load shedding closed-loop controllers in terms of performances and design computational effort. We first describe the various controllers and identify the parameters to be optimized. Next, we present an optimization methodology applicable to all three types of controllers. This approach allows to find the controller parameters which optimize an overall performance objectiw. Results are presented on the Hydro-Qukbec system, in which load shedding is presently planned. [less ▲]

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See detailA load shedding scheme against both short- and long-term voltage instabilities in the presence of induction motors
Otomega, Bogdan; Van Cutsem, Thierry ULiege

in Proceedings of the IEEE Trondheim Power Tech 2011 conference (2011, June)

In the presence of induction motors in loads, long-term voltage instability may result in sharp voltage decreases, once the generators supporting transmission voltages have their field currents limited ... [more ▼]

In the presence of induction motors in loads, long-term voltage instability may result in sharp voltage decreases, once the generators supporting transmission voltages have their field currents limited. Furthermore, after a fault, induction motors may fail re-accelerating and their stalling leads to short-term voltage instability. This paper investigates the ability of the load shedding scheme, previously proposed by the authors, to deal with both short and long-term voltage instabilities. The scheme is distributed with minimal amount of information exchange. It is also shown that the selectivity of this protection scheme can be increased by prioritizing in time the various controllers. Detailed time simulations of a test system are reported. [less ▲]

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See detailLoad-Introdcution resistance of column webs in strong axis beam-to-column joints
Maquoi, René ULiege; Jaspart, Jean-Pierre ULiege

Learning material (1992)

Present paper is aimed at presenting the results of the study performed at F1 the University of Liege on the deformability and the resistance of column H5 web panels in strong axis beam-to-column joints ... [more ▼]

Present paper is aimed at presenting the results of the study performed at F1 the University of Liege on the deformability and the resistance of column H5 web panels in strong axis beam-to-column joints, when subjected to ‘:5 transverse loads carried over by the beam(s). "S Formulae for the assessment of the ultimate resistance and stability E (buckling and crippling) of the column webs are proposed; they are based on me the conclusions of a parametrical study which is briefly described. b‘ Present paper is restricted to the beam-to-column joints with ll or I E‘ hobrolled sections. [less ▲]

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See detailLoad-introduction deformability of column webs in strong axis beam-to-column joints and structural stability of frames.
Jaspart, Jean-Pierre ULiege; Atamaz Sibai, W.

in Proceedings of the Fourth international colloquium on structural stability asian session (ICSSAS'89) (1989)

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See detailLoadbearing capacity criteria in fire resistance testing
Dumont, Fabien ULiege; Wellens, Eric ULiege; Gernay, Thomas ULiege et al

in Materials and Structures (2016), 49(11), 4565-4581

The European system for fire testing and classification of loadbearing building elements lacks consistency because the two standards that have to be applied prescribe different criteria for assessing the ... [more ▼]

The European system for fire testing and classification of loadbearing building elements lacks consistency because the two standards that have to be applied prescribe different criteria for assessing the loadbearing performance. This article analyzes the implications of the present conflict between the standard for testing and the standard for classification. The prescribed criteria for loadbearing performance are related to the exceedance of deflection and rate of deflection thresholds. A database of 46 fire resistance tests performed at the University of Liege is collected that contains the time at which these thresholds are reached in fire tests with different typologies of elements (walls, floors, columns and beams). Then, the loadbearing performance (and hence the fire resistance rating) can be derived according to the two standards. The evolutions of deflection and rate of deflection during the tests are also analyzed to gain a better understanding of the adequacy of the standards. The selection of one or the other standard affects the time at which “failure” is deemed to occur in fire tests. Statistically speaking, the difference in terms of failure time that results from using one or the other standard has a 25% probability to exceed 10%. In certain cases, this results in a difference in fire resistance rating; this was observed for 3 of the analyzed tests. The apparent contradiction in two codes in application has potential practical implications and therefore needs to be solved. The article suggests some guidelines for defining homogenized and consistent criteria. [less ▲]

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See detailLoadbearing capacity criteria in fire resistance testing
Dumont, Fabien ULiege; Wellens, Eric ULiege; Franssen, Jean-Marc ULiege

Report (2015)

Experimental testing may be used to demonstrate the fire resistance of building construction elements. In order to allow comparing the results of tests made in different laboratories on various types of ... [more ▼]

Experimental testing may be used to demonstrate the fire resistance of building construction elements. In order to allow comparing the results of tests made in different laboratories on various types of elements, the tests have to be performed under well-defined standardised conditions. Such standards define the heating and loading conditions, but also the performance criteria that have to be applied to measure the fire resistance duration. In Europe, the procedure that leads to the classification of building construction elements with regards to fire resistance involves a two level process. In the first stage, one or several tests are performed by a laboratory that must have accreditation according to ISO 17025, and one test report is issued for each test. Thereafter, a competent body will compile the necessary test reports and issue a classification report, the results of which can be used by the different stakeholders of the construction process, e.g. by authorities having jurisdiction. For the loadbearing performance, it appears that different logical combinations of the criteria are considered in the test standard and in the classification standard, leading to a inextricable situation. This situation has to be fixed in order to lead to a complete credible and applicable system. In order to provide scientific evidence about the consequences of adopting one or the other of both loadbearing definitions, the results of 46 tests performed in the fire resistance lab of the University of Liege in the recent years are analysed in this paper. [less ▲]

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See detailLoading and skeletal development and maintenance.
Bergmann, P.; Body, J. J.; BOONEN, S. et al

in Journal of Osteoporosis (2010), 2011

Mechanical loading is a major regulator of bone mass and geometry. The osteocytes network is considered the main sensor of loads, through the shear stress generated by strain induced fluid flow in the ... [more ▼]

Mechanical loading is a major regulator of bone mass and geometry. The osteocytes network is considered the main sensor of loads, through the shear stress generated by strain induced fluid flow in the lacuno-canalicular system. Intracellular transduction implies several kinases and phosphorylation of the estrogen receptor. Several extra-cellular mediators, among which NO and prostaglandins are transducing the signal to the effector cells. Disuse results in osteocytes apoptosis and rapid imbalanced bone resorption, leading to severe osteoporosis. Exercising during growth increases peak bone mass, and could be beneficial with regards to osteoporosis later in life, but the gain could be lost if training is abandoned. Exercise programs in adults and seniors have barely significant effects on bone mass and geometry at least at short term. There are few data on a possible additive effect of exercise and drugs in osteoporosis treatment, but disuse could decrease drugs action. Exercise programs proposed for bone health are tedious and compliance is usually low. The most practical advice for patients is to walk a minimum of 30 to 60 minutes per day. Other exercises like swimming or cycling have less effect on bone, but could reduce fracture risk indirectly by maintaining muscle mass and force. [less ▲]

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See detailloads hungry and masses too big: measure nouns on the move?
Declerck, Bernard; Brems, Lieselotte ULiege

Conference (2010)

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See detailLobbying, family concerns and the lack of political support for estate taxation
Pestieau, Pierre ULiege; De Donder, Philippe

in Economics and Politics (2015), 27

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See detailLobe frontal, mémoire de travail et mémoire épisodique
Van der Linden, Martial ULiege; Collette, Fabienne ULiege; Andrès, Pilar

in Azouvi, Philippe; Bussel, B. (Eds.) Syndrome frontal : évaluation et rééducation : actes des 11e Entretiens de l'Institut Garches (1998)

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See detailLobeline-Induced Hyperpnea in Equids. Comparison with Rebreathing Bag and Exercise
Art, Tatiana ULiege; Desmecht, Daniel ULiege; Amory, Hélène ULiege et al

in Journal of Veterinary Medicine. A, Physiology, Pathology, Clinical Medicine (1991), 38(2), 148-152

In order to facilitate lung auscultation, a transitory hyperpnea may be obtained by lobeline administration, use of a rebreathing bag or exercise. The effect of these three methods on the pulmonary ... [more ▼]

In order to facilitate lung auscultation, a transitory hyperpnea may be obtained by lobeline administration, use of a rebreathing bag or exercise. The effect of these three methods on the pulmonary function were studied and compared in 5 healthy ponies. Respiratory airflow and tidal volume were measured with a pneumotachograph Nr. 5 and pleural pressure with the esophageal balloon catheter technique. Pulmonary function values were measured before, during and after the hyperpnea induced by (i) lobeline, (ii) rebreathing and (iii) exercise. Lobeline administration induced an hyperpnea due to both an increase in tidal volume and respiratory rate; this increase in ventilation lasted for about 90 s and was accompanied by a sharp rise in the respiratory peak airflows, especially the expiratory ones. The rebreathing method induced a less hyperpnea which lasted only 30 s. Lastly the hyperpnea after a light treadmill exercise was the longer in duration and intermediate between the preceding methods in intensity [less ▲]

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