Browsing
     by title


0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

or enter first few letters:   
OK
Full Text
See detailA diamond AGPM coronagraph for VISIR
Delacroix, Christian ULg; Absil, Olivier ULg; Mawet, Dimitri et al

in Ground-based and Airborne Instrumentation for Astronomy IV (2012, July 05)

In recent years, phase mask coronagraphy has become increasingly efficient in imaging the close environment of stars, enabling the search for exoplanets and circumstellar disks. Coronagraphs are ideally ... [more ▼]

In recent years, phase mask coronagraphy has become increasingly efficient in imaging the close environment of stars, enabling the search for exoplanets and circumstellar disks. Coronagraphs are ideally suited instruments, characterized by high dynamic range imaging capabilities, while preserving a small inner working angle. The AGPM (Annular Groove Phase Mask, Mawet et al. 20051) consists of a vector vortex induced by a rotationally symmetric subwavelength grating. This technique constitutes an almost unique solution to the achromatization at longer wavelengths (mid-infrared). For this reason, we have specially conceived a mid-infrared AGPM coronagraph for the forthcoming upgrade of VISIR, the mid-IR imager and spectrograph on the VLT at ESO (Paranal), in collaboration with members of the VISIR consortium. The implementation phase of the VISIR Upgrade Project is foreseen for May-August 2012, and the AGPM installed will cover the 11-13.2 μm spectral range. In this paper, we present the entire fabrication process of our AGPM imprinted on a diamond substrate. Diamond is an ideal material for mid-infrared wavelengths owing to its high transparency, small dispersion, extremely low thermal expansion and outstanding mechanical and chemical properties. The design process has been performed with an algorithm based on the rigorous coupled wave analysis (RCWA), and the micro-fabrication has been carried out using nano-imprint lithography and reactive ion etching. A precise grating profile metrology has also been conducted using cleaving techniques. Finally, we show the deposit of fiducials (i.e. centering marks) with Aerosol Jet Printing (AJP). We conclude with the ultimate coronagraph expected performances. [less ▲]

Detailed reference viewed: 31 (8 ULg)
Full Text
See detailDiamond subwavelength gratings for mid-infrared AGPM coronagraph: manufacturing assessment
Delacroix, Christian ULg; Habraken, Serge ULg; Karlsson, Mikael et al

Conference (2010, October 26)

We present the manufacturing and measurement results obtained with a mid-infrared (L-band ~ 3.8 µm) diamond Annular Groove Phase Mask (AGPM) coronagraph (Mawet et al 20051), using subwavelength gratings ... [more ▼]

We present the manufacturing and measurement results obtained with a mid-infrared (L-band ~ 3.8 µm) diamond Annular Groove Phase Mask (AGPM) coronagraph (Mawet et al 20051), using subwavelength gratings and diamond-optimized micro-fabrication techniques such as Nano-Imprint Lithography and Reactive Ion Etching. [less ▲]

Detailed reference viewed: 49 (12 ULg)
Full Text
See detailDiane d'Andalo
Close, Florence ULg

in Fella, Audrey (Ed.) Les femmes mystiques. Histoire et dictionnaire (2013)

notice biographique de la bienheureuse Diane d'Andalo (Bologne, ca. 1200-1236)

Detailed reference viewed: 16 (2 ULg)
Peer Reviewed
See detailDiane Project: Women’s Entrepreneurship
Constantinidis, Christina ULg; Cornet, Annie ULg

Conference (2003, June 16)

Detailed reference viewed: 22 (2 ULg)
See detailDiane Ward
Delville, Michel ULg

in Riggs, Thomas (Ed.) Contemporary Poets (1996)

Detailed reference viewed: 6 (1 ULg)
See detailLos diarios de Adán y Eva
Twain, Mark; Willson, Patricia ULg

Book published by Libros del Zorro Rojo (2009)

Detailed reference viewed: 24 (6 ULg)
Full Text
Peer Reviewed
See detailDiarrhea and vomitting in a yorkshire terrier
Ramery, Eve ULg; Papakonstantinou, Stratos; Pinilla, Manuel et al

Conference (2010)

Detailed reference viewed: 20 (1 ULg)
Full Text
Peer Reviewed
See detailDiarrhea induced by high doses of nicotinamide in dialysis patients
Delanaye, Pierre ULg; Weekers, Laurent ULg; Krzesinski, Jean-Marie ULg

in Kidney International (2006), 69(10), 1914-1914

Detailed reference viewed: 38 (2 ULg)
See detailDiarrhée virale bovine et maladie des muqueuses
Pastoret, Paul-Pierre ULg; Hamers, C.; Dehan, Pierre ULg

in Lefevre, P.-C.; Blancou, J.; Chermette, R. (Eds.) Principales maladies infectieuses et parasitaires du bétail (2003)

Detailed reference viewed: 13 (2 ULg)
Full Text
Peer Reviewed
See detailDiarrhée virale bovine et maladie des muqueuses : vaccination contre l'infection par le virus de la BVD-MD
Thiry, Etienne ULg; Gogev, Sacha; Meurens, François et al

in Point Vétérinaire (2004), 35

Detailed reference viewed: 66 (4 ULg)
Full Text
See detailDiarrhoea in the critically ill
Wiesen, Patricia ULg; Van Gossum, A.; Preiser, Jean-Charles ULg

in Current Opinion in Critical Care (2006), 12(2), 149-154

Purpose of review The purpose of this review is to update the knowledge on diarrhoea, a common problem in critically ill patients. Epidemiological data will be discussed, with special emphasis on ... [more ▼]

Purpose of review The purpose of this review is to update the knowledge on diarrhoea, a common problem in critically ill patients. Epidemiological data will be discussed, with special emphasis on diarrhoea in tube-fed patients and during antibiotic therapy. The possible preventive and therapeutic measures will be presented. Recent findings The need for concise definitions of diarrhoea was recently re-emphasized. The use of pump-driven continuous instead of intermittent enteral feeding is less often associated with diarrhoea. The discontinuation of enteral feeding during diarrhoea is not justified. Clostridium difficile-associated diarrhoea is frequent during antibiotic therapy with quinolones and cephalosporins. Formulas enriched with water-soluble fibres are probably effective to prevent diarrhoea, and promising data on the modulation of gut microflora with probiotics and prebiotics were recently released. Summary Diarrhoea is common in critically ill patients, especially when sepsis and hypoalbuminaemia are present, and during enteral feeding and antibiotic therapy. The management of diarrhoea includes generous hydration, compensation for the loss of electrolytes, antidiarrheal oral medications, the continuation of enteral feeding, and metronidazole or glycopeptides in the case of moderate to severe C. difficile colitis. The place of enteral formulas enriched with water-soluble fibres, probiotics and prebiotics is not yet fully defined. [less ▲]

Detailed reference viewed: 108 (2 ULg)
Peer Reviewed
See detailDiarylazepine derivatives as potent atypical neuroleptic drugs: Recent advances
Liégeois, Jean-François ULg; Bruhwyler, J.; Rogister, F. et al

in Current Medicinal Chemistry (1995), 1

Detailed reference viewed: 31 (1 ULg)
Full Text
Peer Reviewed
See detailDiaspirin Crosslinked Hemoglobin (Dclhb): Absence of Increased Free Radical Generation Following Administration in a Rabbit Model of Renal Ischemia and Reperfusion
Pincemail, Joël ULg; Detry, Olivier ULg; Philippart, C. et al

in Free Radical Biology & Medicine (1995), 19(1), 1-9

In control rabbits, a renal ischemia of 60 min followed by 10 min of reperfusion resulted in an enhanced free radical production in cortical tissue, as assessed by a significant decrease of free ... [more ▼]

In control rabbits, a renal ischemia of 60 min followed by 10 min of reperfusion resulted in an enhanced free radical production in cortical tissue, as assessed by a significant decrease of free glutathione (42%), protein-bound GSH (17%), and vitamin E (49%). In contrast, catalase or glutathione peroxidase activities were not affected by these experimental conditions. Free radical production in this model was also measured directly using electron spin resonance (ESR) spectroscopy associated with a PBN (alpha-phenyl N-tert-butyl-nitrone) spin trap agent in the venous blood arising from the ischemic kidney. The signal consisted of a triplet of doublets. In contrast, no signal could be detected in control blood samples taken prior to inducing ischemia. The burst of free radical production occurred in the early phase after restoration of flow in the kidneys rendered ischemic, as evidenced by a signal of weak intensity which generally appeared within the third minute after reperfusion and progressively increased to form a well-defined asymmetric signal following 10 min of reperfusion. The precise nature of free radicals trapped by the PBN agent remains, however, to be elucidated, but analysis of the coupling constants (aN = 14.5-15 G; a beta H = 2.5-3 G) and asymmetry of the central doublets suggests that the ESR signal may arise from a nitorxy-radical adduct resulting from the spin trapping by PBN of both oxygen- or carbon-centered radicals of lipid origin. As evidenced by both direct and indirect measurements, exchange of rabbit blood immediately after inducing renal ischemia with 30 ml/kg of Diaspirin Crosslinked Hemoglobin (7.5 g/dl in lactated electrolyte) or human serum albumin (7.5 g/dl in lactated electrolyte) did not exacerbate free radical production mediated by an ischemia reperfusion phenomenon, a typical situation found in a resuscitation setting. [less ▲]

Detailed reference viewed: 24 (1 ULg)
See detailDiaspora et Transmigration
Martiniello, Marco ULg

Scientific conference (2010, October 07)

Detailed reference viewed: 17 (0 ULg)
Full Text
See detailDiáspora y voto en el exterior. La participación política de los emigrantes bolivianos en las elecciones de su país de origen
Lafleur, Jean-Michel ULg

Book published by CIDOB (2012)

A nivel internacional, 115 países permiten que sus ciudadanos en el exterior ejerzan el derecho de participar en las elecciones de su país de origen. A pesar del desarrollo de la literatura sobre ... [more ▼]

A nivel internacional, 115 países permiten que sus ciudadanos en el exterior ejerzan el derecho de participar en las elecciones de su país de origen. A pesar del desarrollo de la literatura sobre transnacionalismo político, el impacto del voto en el exterior sobre las relaciones entre emigrante, país de origen y país de residencia permanece desconocido. A través del caso de las elecciones presidenciales bolivianas del 6 de diciembre 2009, este libro discute las motivaciones de los estados expulsores por otorgar el derecho de votar a sus emigrantes, las variaciones en el uso de este derecho por los emigrantes según los lugares de destino y el impacto de este voto sobre el empoderamiento de los emigrantes en las sociedades de origen y de residencia. Los resultados presentados en este libro se basan en la observación del proceso electoral en el exterior, en entrevistas en profundidad conducidas con emigrantes y en más de 300 encuestas con electores bolivianos realizadas en las ciudades de Madrid, Buenos Aires, San Pablo y Nueva York. [less ▲]

Detailed reference viewed: 20 (6 ULg)
Full Text
See detailDiasporic Hereafters in Jhumpa Lahiri’s “Once in a Lifetime”
Munos, Delphine ULg

in Schultermandl, Silvia; Toplu, Sebnem (Eds.) A Fluid Sense of Self: The Politics of Transnational Identity (2011)

Detailed reference viewed: 135 (19 ULg)
Full Text
Peer Reviewed
See detailDiastematomyelia: pre- and postnatal multimodal diagnostic approach.
Passoglou, V.; Tebache, M.; Collignon, L. et al

in Journal Belge de Radiologie (1924) (2011), 94(6), 333-5

Diastematomyelia is a relatively rare congenital abnormality presenting as a sagittal separation of the spinal cord. Although cases of diastematomyelia have been previously reported, fully documented ... [more ▼]

Diastematomyelia is a relatively rare congenital abnormality presenting as a sagittal separation of the spinal cord. Although cases of diastematomyelia have been previously reported, fully documented approaches by both prenatal and postnatal diagnostic workup are rare in the literature. We present a fully studied case of diastematomyelia type I investigated by prenatal US and MRI and postnatal US, MRI and radiography. [less ▲]

Detailed reference viewed: 6 (0 ULg)
Full Text
Peer Reviewed
See detailDiazepam-Insensitive Gabaa Receptors on Postnatal Spiral Ganglion Neurones in Culture
Malgrange, Brigitte ULg; Rigo, Jean-Michel; Lefebvre, Philippe ULg et al

in Neuroreport (1997), 8(3), 591-6

Using dissociated spiral ganglion cell cultures obtained from 3-day-old rat cochlea, we investigated the response of auditory neurones to gamma-aminobutyric acid (GABA) using patch-clamp techniques. In ... [more ▼]

Using dissociated spiral ganglion cell cultures obtained from 3-day-old rat cochlea, we investigated the response of auditory neurones to gamma-aminobutyric acid (GABA) using patch-clamp techniques. In our recording conditions, GABA elicited inward currents in > 95% of the neurones which reversed around 0 mV. Similar inward currents were measured using isoguvacin, a specific agonist of GABAA receptors. GABA-gated currents were reversibly inhibited by the channel blocker picrotoxin and the GABA competitive antagonist bicuculline. These functional GABAA receptors are characterized by an insensitivity to benzodiazepines and a relatively high sensitivity to beta-carbolines and barbiturates. These results show that the GABAA receptor pharmacological properties of spiral ganglion neurones are close to those of cerebellar granule cells. [less ▲]

Detailed reference viewed: 48 (9 ULg)