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See detailLock gates - Part B: Ship impact
Rigo, Philippe ULg; Gernay, Thomas ULg

in PIANC International Workshop, 15-16 October 2009, Edt. Ph Rigo, PIANC, Brussels (2009, October)

This paper presents an overview of the state of art of ship impact analysis on lock gates. First, the different kinds of analysis are presented, which are: empirical approach, analytical-rational approach ... [more ▼]

This paper presents an overview of the state of art of ship impact analysis on lock gates. First, the different kinds of analysis are presented, which are: empirical approach, analytical-rational approach, and finite element methods performed with quasi-static analysis or dynamic analysis. A discussion on the hypothesis and the calculus time required by each method is carried out with a view to clarify the state-of-practice for engineers. Then, a quasi-static analysis by finite elements modeling a ship impact is performed on the specific case of a new lock gate designed in Belgium for the “Seine-Escaut Est” project. The results suggest some design recommendations to provide a ductile behavior and so impact strength for the gate structure. [less ▲]

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See detailLock Gates - Innovative concepts
Rigo, Philippe ULg; Herbillon, Vincent ULg; Thiry, Arnaud ULg

in PIANC Workshop 'INNOVATIONS IN NAVIGATION LOCK DESIGN' (2009, October)

This paper introduces some new innovative concepts identifies by the INCOM WG29 and reported in the PIANC report 106 “Innovations in Navigation Lock Design”, 2009.The paper focusses on innovation in LOCK ... [more ▼]

This paper introduces some new innovative concepts identifies by the INCOM WG29 and reported in the PIANC report 106 “Innovations in Navigation Lock Design”, 2009.The paper focusses on innovation in LOCK GATES [less ▲]

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See detailReport on the Standardized Description of Instructional Models
Derntl, M; Neumann, S; Oberhuemer, P et al

Report (2009)

The report is exploring how instructional models could be described in a standardised way. How could good teaching practice in instructional modelling be captured and evaluated; and what are the ... [more ▼]

The report is exploring how instructional models could be described in a standardised way. How could good teaching practice in instructional modelling be captured and evaluated; and what are the potentials of standard as IMS Learning Design to support these activities? The report presents a Framework for Good Teaching Practice that uses an Educational Taxonomy to classify Teaching Methods and Units of Learning (which are contextualised examples of good teaching practice). [less ▲]

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See detailSynthesis of functionalized polyesters by the "click" copper-catalyzed alkyne-azide cycloaddition
Lecomte, Philippe ULg; Riva, Raphaël ULg; Jérôme, Christine ULg

in Khosravi, Ezat; Yagci, Yusuf; Savelyev, Yuri (Eds.) New smart materials via metal mediated macromolecular engineering (2009)

The functionalization of aliphatic polyesters by the copper-mediated azide–alkyne Huisgen’s cycloaddition is very efficient under mild conditions, which prevents degradation from occurring. The ... [more ▼]

The functionalization of aliphatic polyesters by the copper-mediated azide–alkyne Huisgen’s cycloaddition is very efficient under mild conditions, which prevents degradation from occurring. The implementation of this reaction requires the synthesis of aliphatic polyesters bearing pendant alkynes and azides, which can be carried out either by polycondensation or by ring-opening polymerization. [less ▲]

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See detailAmphibia-Reptilia: Editorial report 2008-2009
Denoël, Mathieu ULg

Conference (2009, September 30)

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See detailRecent advances in the functionalization of aliphatic polyesters by ring-opening polymerization
Lecomte, Philippe ULg; Jérôme, Christine ULg

in Khosravi, Ezat; Yagci, Yusuf; Savelyev, Yuri (Eds.) New smart materials via metal mediated macromolecular engineering (2009)

Two main strategies aiming at synthesizing aliphatic polyesters bearing pendant functional groups will be reported. The first one is based on the synthesis and the polymerization of lactones substituted ... [more ▼]

Two main strategies aiming at synthesizing aliphatic polyesters bearing pendant functional groups will be reported. The first one is based on the synthesis and the polymerization of lactones substituted by various functional groups. The direct grafting of functional groups onto aliphatic polyesters is the second strategy. Last but not least, the association of these two strategies is very promising in order to overcome their respective limitations. [less ▲]

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See detailPatrocles: a database of polymorphic miR-mediated gene regulation in vertebrates
Baurain, Denis ULg; Hiard, Samuel ULg; Coppieters, Wouter ULg et al

Scientific conference (2009, September 29)

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See detailTetrazolium testing in Allium genus
Rodriguez Quilon, Isabel; Adam, Gilles ULg; Duran, José María

Poster (2009, September 29)

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See detailLa transplantation, et pourquoi le don d'organes?
Detry, Olivier ULg

Conference given outside the academic context (2009)

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See detailDroplet internal flow measurement using micro-PIV
Lebeau, Frédéric ULg; Vetrano, Maria-Rosaria; van Beeck, Jeroen et al

Poster (2009, September 25)

The micro-PIV technique represents a development of the general particle image velocimetry technique to applications in fluid mechanics phenomena at a micrometric scale. It takes advantage from the very ... [more ▼]

The micro-PIV technique represents a development of the general particle image velocimetry technique to applications in fluid mechanics phenomena at a micrometric scale. It takes advantage from the very small depth of field of long distance objectives with high magnification to carry out accurate measurements in the focusing plane. The typical configuration consists of a microscope coupled to a pulsated laser and a double exposure PIV camera. The flow is seeded using sub-micrometric fluorescent particles. The laser light is directed on the investigated flow through the epifluorescent microscope objective. The light re-emitted by the fluorescent particles is detected by the PIV camera equipped of an optical filter to select only the fluorescence wavelength. The micro-PIV technique presents a large interest in the validation of numerical codes developed in different micro-fluidic framework such as biological flows and in industrial application as the ink-jet print-head. To investigate the micro-PIV measurements capabilities for fast moving and deforming droplets, measurement of the flow inside a jet ejected by a piezo-driven capillary up to the droplet formation by Rayleigh instability are studied in combination with PTV in order to distinguish the main liquid movement from the bulk one. Liquids differing from each other for their viscosity and their surface tension as well as piezo-element frequency in the 1 to 8 KHz range are investigated. The flow rate of the jet is adjusted by means of a pushing syringe system. Low concentration of 0.86 microns fluorescent particles is employed as seeding in order to have good signal to noise ratios. The ensemble averaging method is used to increase the height of the correlation peaks. Stroboscopic method is used to achieve several couples of frames taken in the same conditions thanks to high repeatability of piezo-driven instabilities. Moreover changing the delay of stroboscopy all the droplet formation phases can be analyzed in detail. In the experimental configuration, optical aberrations play a role since they affect the position and shape of the particle images and as a consequence the velocity field. The two main optical aberration experienced are astigmatism and measurement plane deformation. Astigmatism cannot be avoided in the experimental configuration, as it is clearly observed on droplet images were particles above and bellow the focalisation plane appear as perpendicular lines (Fig 1a). Nevertheless cross correlation method is not sensitive on particle image shape. As the measurement plane defined by the focal plane of the microscope is located inside a curved transparent object, it deformed as it was passing through a lens. The deformation of the objective plane affects the measurements as a function of the optical configuration, droplet curvature and relative refractive index. However, in the studied configuration, deformed plane differs only from the straight one of about 8 µm. The micro-PIV method is therefore suited to measure the instantaneous vector field inside droplets through cross-correlation methods (Fig 1b). The internal flow recirculation is observed. Measurements can be also performed in different planes inside the droplet depending on focalisation plane. [less ▲]

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See detailThe Paradoxes of Grace: New Impingements on Australian Literary Territory
Delrez, Marc ULg

Conference (2009, September 24)

The title of Robert Drewe’s latest novel, Grace (2005), shares with J. M. Coetzee’s antonymous Disgrace (1999) a polysemous quality which derives from both works’ attempt to capture the ethical stance of ... [more ▼]

The title of Robert Drewe’s latest novel, Grace (2005), shares with J. M. Coetzee’s antonymous Disgrace (1999) a polysemous quality which derives from both works’ attempt to capture the ethical stance of a society in a way which has personal and political ramifications at the same time. The Australian text shows some concern with the predicament of a boatload of asylum seekers from Indonesia, who later escape from their detention centre in the Kimberleys; but Drewe’s progressive denunciation of Australia’s treatment of refugees is potentially compromised by the Australian anxiety over territorial integrity which provides an unshakeable context for this kind of thematic development. More generally, my paper will explore the ambiguities attending a discursive move which seeks to absorb race into larger categories of political meaning, and the related difficulty of achieving the ‘grace’ of complete freedom from colonialist parameters in an Australian culture where some suspense over territory continues to brood. [less ▲]

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See detailThermal Detector
Fleury-Frenette, Karl ULg; Habraken, Serge ULg; Renotte, Yvon ULg et al

Patent (2009)

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See detailEnvironmental and genetic sources of variability of stearoyl Coenzyme-A desaturase 9 activity during and across lactations
Arnould, Valérie ULg; Gengler, Nicolas ULg; Soyeurt, Hélène ULg

Conference (2009, September 23)

Milk fatty acid (FA) profile is far from the optimal fat composition in regards to human health. Different natural sources of variation such as feeding or genetics could be used to modify the contents of ... [more ▼]

Milk fatty acid (FA) profile is far from the optimal fat composition in regards to human health. Different natural sources of variation such as feeding or genetics could be used to modify the contents of unsaturated fatty acids. The impact of feeding is well described; however, genetics effects on the milk FA composition are not well studied. Increasing the unsaturated fatty acids contents of bovine milk could have the potential to raise the nutritive and therapeutic values of dairy products. The stearoyl Coenzyme-A desaturase 9 (delta-9) gene was identified as a potential functional candidate gene affecting milk fat composition in dairy cattle. The objective of this research was to study the genetic variability on this enzyme activity across lactations. A total of 199,977 test-day records were obtained from 29,603 Holstein cows in first lactation, 154,267 records from 23,453 Holstein cows in second lactation, and 173,244 records from 75,887 Holstein cows in third and later lactations. The used model was a multiple-trait random regressions test-day model. Fixed effects were: herd x date of test, and class of age. Random effects were: herd x year of calving, permanent environmental, additive genetic, and residual effects. The studied traits were milk yield, protein content, percentage of fat, monounsaturated fatty acids estimated by mid-infrared spectrometry, and the ratios reflecting the delta-9 activity. Obtained heritability estimates of delta-9 as well as the genetic and phenotypic correlations varied across lactations. These results suggest potential improvements of milk fat composition based on delta-9 activity using animal selection and appropriate management practices. [less ▲]

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See detailPulse pressure and ambulatory arterial stiffness index (AASI) in patients wit type 1 diabetes
Philips, Jean-Christophe ULg; Marchand, Monique ULg; Saint-Remy, Annie ULg et al

Conference (2009, September 19)

Results of PP and AASI measurements performed during a 24H AMBP recording and a 3 min posture test are not superimposable, but gave complementary information, in a population with type 1 diabetes mellitus ... [more ▼]

Results of PP and AASI measurements performed during a 24H AMBP recording and a 3 min posture test are not superimposable, but gave complementary information, in a population with type 1 diabetes mellitus. Our proof-of-concept study does not support the use of AASI as a cardiovascular risk marker when calculated during a short posture test. [less ▲]

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See detailLong E-mails and Internet Connections
Merciadri, Luca ULg

E-print/Working paper (2009)

Fetching e-mails is a daily task. However, when an e-mail size overcomes a given threshold, e-mail communication becomes more difficult, because slow. This is principally due to the outgoing speed of ... [more ▼]

Fetching e-mails is a daily task. However, when an e-mail size overcomes a given threshold, e-mail communication becomes more difficult, because slow. This is principally due to the outgoing speed of cheap Internet connections. We propose here a mechanism which limits this problem. [less ▲]

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See detailP3 panel summary: exozodiacal dust disks
Absil, Olivier ULg

Scientific conference (2009, September 18)

When observing an extrasolar planetary system, the most luminous component after the star itself is generally the light scattered and/or thermally emitted by a population of micron-sized dust grains ... [more ▼]

When observing an extrasolar planetary system, the most luminous component after the star itself is generally the light scattered and/or thermally emitted by a population of micron-sized dust grains. These grains are expected to be continuously replenished by the collisions and evaporation of larger bodies just as in our solar zodiacal cloud. Exozodiacal clouds (\exozodis") must therefore be seriously taken into account when attempting to directly image faint Earth-like planets (exoEarths, for short). This paper summarizes the oral contributions and discussions that took place during the Satellite Meeting on exozodiacal dust disks, in an attempt to address the following two questions: Do we need to solve the exozodi question? If yes, how to best solve it? [less ▲]

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See detailMarital satisfaction and emotional communication in couples with an alcoholic member
Dethier, Marie ULg; Counerotte, Christelle; Blairy, Sylvie ULg

Poster (2009, September 18)

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See detailMarital satisfaction, emotion and mental health in parents of child with autism spectrum disorder
Blairy, Sylvie ULg; Counerotte, Christelle; Léonard, Cathy

Poster (2009, September 18)

Detailed reference viewed: 38 (1 ULg)