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See detailLes fronts marins
Mouchet, Anne ULg

Report (1986)

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See detailFronts tidaux sur le Plateau Continental Nord Ouest Européen
Djenidi, Salim ULg

in Bulletin de la Société Royale des Sciences de Liège (1990), 59(2), 205-216

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See detail"Frottements d'images : les films tardifs de Paul Sharits"
Belloi, Livio ULg

Conference (2012, March 16)

La notion de friction implique forcément celle de contact, ce qui, à l’évidence, intéresse au tout premier chef les images à caractère photochimique. Dans le cadre de cette communication, j'interroge la ... [more ▼]

La notion de friction implique forcément celle de contact, ce qui, à l’évidence, intéresse au tout premier chef les images à caractère photochimique. Dans le cadre de cette communication, j'interroge la notion de friction dans le champ du cinéma d’expérimentation, en me concentrant plus particulièrement sur les films du cinéaste (et peintre) américain Paul Sharits (1943-1993). À partir de "Color Sound Frames" (1974), l’œuvre de Sharits connaît une mutation profonde. Pour une large part, le travail du cinéaste consistera désormais à refilmer des fragments de pellicule déjà impressionnés, images appartenant de facto à la catégorie du déjà-vu. Pour ce faire, Sharits mobilise un écran transparent et un projecteur trafiqué, dont il a ôté et la griffe, et le mécanisme d’obturation. Retournant l’une contre l’autre les deux machines sur lesquelles se fonde le spectacle cinématographique, procédant par « anti-cadrage » et reprise de vue, le cinéaste orchestre, au plus intime de ses œuvres, d’intenses rapports de friction entre le film second (ou film filmé) et le film premier (ou film d’accueil, celui qui se déroule sous nos yeux) ; il accuse, de manière très méthodique, les discordances qui affectent les deux niveaux de la représentation, que ce soit en termes de vitesse, de texture ou de stabilité des motifs. Ma communication se donne pour but d’étudier, dans tous ses enjeux, les frictions internes qui traversent les films tardifs de Paul Sharits, dont "Tails" (1976) et "Bad Burns" (1982). Dans le cas de ce dernier film, le rapport de friction s’exacerbe, se déporte et tourne au conflit ouvert entre l’image et la source lumineuse censée lui donner vie : il se solde ponctuellement par des destructions apparentes du support filmique, petits désastres figuratifs qui ont paradoxalement valeur, selon Sharits, d’actes analytiques à part entière. [less ▲]

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See detailA frozen heart.
DAVIN, Laurent ULg; Legrand, Victor ULg; Legrand, Delphine

in European heart journal (2009), 30(15), 1827

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See detailFrozen Moments: The Motif of the Photograph in the work of Anne Carson and Michael Ondaatje
Burkitt, Katharine ULg

in Gidley, Mick (Ed.) Writing with Light: Words and Photographs in American Texts (2010)

Anne Carson’s verse-novel Autobiography of Red locates itself on the ambivalent margins of myth and memory, interpretation and representation. As a text that is already fraught with its own generic ... [more ▼]

Anne Carson’s verse-novel Autobiography of Red locates itself on the ambivalent margins of myth and memory, interpretation and representation. As a text that is already fraught with its own generic ambiguity it draws attention to different modes of representation through its engagement with literature and photography. Carson presents her protagonist’s photographs through lyrical interludes which evoke visual representation but remain fixed within the poetic context. Through these photographs Geryon narrates his own monstrosity. He is both a homosexual young man and the monster from the myth of Herakles and the text’s preoccupation with his abject difference demonstrates a postcolonial standpoint which is based on an exploration of physical ‘otherness’. Each photograph becomes a space to explore the way in which physical presence is represented visually as well as through language. Thus, the text juxtaposes poetry and photography to explore the politics and traditions of artistic genres; furthermore Autobiography of Red demonstrates the friction that is produced when the static form of the photograph is offset with a bildungsroman narrative. Therefore, in Carson’s text a photograph is not just ‘a bunch of light hitting a plate,’ as the verse-novel itself and the title of this paper, suggests. Such a notion implies immediacy and stasis, whereas in Autobiography of Red the disparate formation of multiple photographic interludes evinces narrative progression, albeit in an unconventional mode. In order to consider Carson’s paradoxical narrative form, I will take into account theoretical engagements with literature and photography, including Roland Barthes’ Camera Lucida. Therefore this paper will draw attention to the way in which the poet harnesses the incongruous poetic form of the verse-novel, coupled with evocations of photographs, to narrate the postcolonial history of her monstrous protagonist. I will also explore the way in which Autobiography of Red uses its self-conscious textuality in order to explore the unreliable nature of memory and narrative in the construction of identity and argue that it is through these engagements with genre and form, as well as allusions to myths, literature, and photography, that Carson demonstrates the unsteady bases that form personal and social identities in the contemporary world. [less ▲]

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See detailFrozen Splash
Delon, Giles ULg; Terwagne, Denis ULg; Adami, Nicolas ULg et al

Poster (2010, November 21)

We have studied the splashing dynamics of water drops impacting granular layers. Depending on the drop kinetic energy, various shapes are observed for the resulting craters. Experimental parameters that ... [more ▼]

We have studied the splashing dynamics of water drops impacting granular layers. Depending on the drop kinetic energy, various shapes are observed for the resulting craters. Experimental parameters that have been considered are : the size of the millimetric droplets ; the height of the free fall, ranging from 1.5 cm to 100 cm ; and, the diam- eter of the grain. As the drop is impacting the sand layer, energy is dissipated and a splash of sand occurs. Meanwhile, surface tension, in- ertia and viscosity compete, leading to strong deformations of the drop which depend on the experimental conditions. Just after the drop en- ters into contact with the sand, imbibition takes place and increases the apparent viscosity of the fluid. The drop motion is stopped by this phenomenon. Images and fast-video recordings of the impact allowed to find scaling laws for the crater morphology and size. <br />This abstract is related to a fluid dynamics video for the APS DFD gallery of fluid motion 2010. [less ▲]

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See detailFructose and metabolic diseases: new findings, new questions.
Tappy, Luc; Lê, Kim A.; Tran, Christel et al

in Nutrition (Burbank, Los Angeles County, Calif.) (2010), 26(11-12), 1044-9

There has been much concern regarding the role of dietary fructose in the development of metabolic diseases. This concern arises from the continuous increase in fructose (and total added caloric ... [more ▼]

There has been much concern regarding the role of dietary fructose in the development of metabolic diseases. This concern arises from the continuous increase in fructose (and total added caloric sweeteners consumption) in recent decades, and from the increased use of high-fructose corn syrup (HFCS) as a sweetener. A large body of evidence shows that a high-fructose diet leads to the development of obesity, diabetes, and dyslipidemia in rodents. In humans, fructose has long been known to increase plasma triglyceride concentrations. In addition, when ingested in large amounts as part of a hypercaloric diet, it can cause hepatic insulin resistance, increased total and visceral fat mass, and accumulation of ectopic fat in the liver and skeletal muscle. These early effects may be instrumental in causing, in the long run, the development of the metabolic syndrome. There is however only limited evidence that fructose per se, when consumed in moderate amounts, has deleterious effects. Several effects of a high-fructose diet in humans can be observed with high-fat or high-glucose diets as well, suggesting that an excess caloric intake may be the main factor involved in the development of the metabolic syndrome. The major source of fructose in our diet is with sweetened beverages (and with other products in which caloric sweeteners have been added). The progressive replacement of sucrose by HFCS is however unlikely to be directly involved in the epidemy of metabolic disease, because HFCS appears to have basically the same metabolic effects as sucrose. Consumption of sweetened beverages is however clearly associated with excess calorie intake, and an increased risk of diabetes and cardiovascular diseases through an increase in body weight. This has led to the recommendation to limit the daily intake of sugar calories. [less ▲]

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See detailFructose utilization during exercise in men: rapid conversion of ingested fructose to circulating glucose.
Jandrain, Bernard ULg; Pallikarakis, N.; Normand, S. et al

in Journal of Applied Physiology (Bethesda, Md. : 1985) (1993), 74(5), 2146-54

The aim of the present study was to compare the metabolic fate of repeated doses of fructose or glucose ingested every 30 min during long-duration moderate-intensity exercise in men. Healthy volunteers ... [more ▼]

The aim of the present study was to compare the metabolic fate of repeated doses of fructose or glucose ingested every 30 min during long-duration moderate-intensity exercise in men. Healthy volunteers exercised for 3 h on a treadmill at 45% of their maximal oxygen consumption rate. "Naturally labeled" [13C]glucose or [13C]fructose was given orally at 25-g doses every 30 min (total feeding: 150 g; n = 6 in each group). Substrate utilization was evaluated by indirect calorimetry, and exogenous sugar oxidation was measured by isotope ratio mass spectrometry on expired CO2. Results were corrected for baseline drift in 13C/12C ratio in expired air due to exercise alone. Fructose conversion to plasma glucose was measured combining gas chromatography and isotope ratio mass spectrometry. Most of the ingested glucose was oxidized: 81 +/- 4 vs. 57 +/- 2 g/3 h for fructose (2P < 0.005). Exogenous glucose covered 20.8 +/- 1.4% of the total energy need (+/- 6.7 MJ) compared with 14.0 +/- 0.6% for fructose (2P < 0.005). The contribution of total carbohydrates was significantly higher and that of lipids significantly lower with glucose than with fructose. The blood glucose response was similar in both protocols. From 90 to 180 min, 55-60% of circulating glucose was derived from ingested fructose. In conclusion, when ingested repeatedly during moderate-intensity prolonged exercise, fructose is metabolically less available than glucose, despite a high rate of conversion to circulating glucose. [less ▲]

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See detailFrugivory and seed dispersal by northern pigtailed macaques, Macaca leonina, in Thailand
Albert, Aurélie; Hambuckers, Alain ULg; Culot, Laurence ULg et al

in International Journal of Primatology (2013), 33

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See detailFruit microstructure evaluation using synchrotron X-ray computed tomography
Verboven, Pieter; Kerckhofs, Greet ULg; Mebatsion, Hibru K. et al

Conference (2008)

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See detailFruit Microstructure Evaluation Using Synchrotron X-Ray Computed Tomography
Verboven, Pieter; Ho, Quang Tri; Herremans, Els et al

in Ajjguilera, JM BarbosaCanovas, GV Simpson, R WeltiChanes, J BermudezAguirre, D (Ed.) FOOD ENGINEERING INTERFACES (2011)

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See detailFrustrated symmetries in multi-Higgs-doublet models
Ivanov, Igor ULg; Keus, Venus ULg

in Physics Letters B (2011), 695(5), 459-462

Within multi-Higgs-doublet models, one can impose symmetries on the Higgs potential, either discrete or continuous, that mix several doublets. In two-Higgs-doublet model any such symmetry can be conserved ... [more ▼]

Within multi-Higgs-doublet models, one can impose symmetries on the Higgs potential, either discrete or continuous, that mix several doublets. In two-Higgs-doublet model any such symmetry can be conserved or spontaneously violated after the electroweak symmetry breaking (EWSB), depending on the coefficients of the potential. With more than two doublets, there exist symmetries which are always spontaneously violated after EWSB. We discuss the origin of this phenomenon and show its similarity to frustration in condensed matter physics. [less ▲]

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See detailFrustrated symmetries in NHDM
Keus, Venus ULg

Speech (2010)

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See detailFrustrated symmetries in NHDM
Keus, Venus ULg

Speech (2010)

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See detailFT-IR measurement of tagitinin C after solvent extraction from Tithonia diversifolia
Ziemons, Eric ULg; Goffin, Eric ULg; Lejeune, Robert ULg et al

in Talanta (2004), 62(2), 383-387

Tagitinin C, an antiplasmodial compound, identified as one major compound of the subtropical medicinal plant, Tithonia diversifolia, was, determined by FT-IR spectroscopy method. The crude ether extracts ... [more ▼]

Tagitinin C, an antiplasmodial compound, identified as one major compound of the subtropical medicinal plant, Tithonia diversifolia, was, determined by FT-IR spectroscopy method. The crude ether extracts from aerial parts of the plant were evaporated to dryness and re-dissolved in tetrachloroethylene (C2Cl4) before analysis. The magnitude of the absorbance of the very specific C=O stretching vibration (v(c=o)) at 1664.8 cm(-1) was exploited in order to quantify tagitinin C. The determination coefficient (r(2)) of the calibration scale was 0.9994, the detection limit was lower than 3 mug ml(-1) and the quantification limit was lower than 10 mug ml(-1). Recovery values from 100.5 to 101.7% were found for spiked concentration levels from 19.91 to 89.95 mug ml(-1). The main characteristics of the curves obtained from the calibration standards and from the standard addition technique were not statistically different (Student t-test) suggesting that matrix effects were negligible. The results obtained for the determination of tagitinin C in the crude ether extract from aerial parts of T diversifolia by LC and FT-IR spectroscopic method agreed well: 0.76 +/- 0.02 and 0.773 +/- 0.009, of tagifinin C in dried plant respectively. (C) 2003 Elsevier B.V. All rights reserved. [less ▲]

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See detailFT-Raman Spectroscopy of Extant and Fossil Micro-Algae
Marshall, craig; Javaux, Emmanuelle ULg

Conference (2005)

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See detailFTIR characterisation of the chemical composition of Silurian miospores (cryptospores and trilete spores) from Gotland, Sweden
Steemans, Philippe ULg; Lepot, Kevin ULg; Marshall, Craig et al

in Review of Palaeobotany and Palynology (2010), 162

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See detailFTIR Observations at the Jungfraujoch Station for long-term monitoring of the Troposphere and Validation of the Space-based Sensors.
Mahieu, Emmanuel ULg; Zander, Rodolphe ULg; Demoulin, Philippe ULg et al

in Burrows, J.; Borrell, P. (Eds.) Measuring Tropospheric Trace Constituents from Space. (2007)

Detailed reference viewed: 16 (8 ULg)