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See detailOpposing regulation of Sox2 by cell-cycle effectors E2f3a and E2f3b in neural stem cells
Julian, Lisa; Vandenbosch, Renaud ULg; Pakenham, Catherine et al

in Cell Stem Cell (2013)

Detailed reference viewed: 46 (14 ULg)
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See detailOpposite actions of human Prolactin and its 16-kDa fragment on Angiogenesis
Struman, Ingrid ULg; Mainfroid, V.; Bentzien, F. et al

Poster (1997, September)

Detailed reference viewed: 15 (3 ULg)
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See detailOPPOSITE EFFECTS OF H3-RECEPTOR AGONIST ON FUNDIC AND ANTRAL SOMATOSTATIN RELEASES BY ISOLATED RAT MUCOSAL CELLS
BADO, A.; LAIGNEAU, J. P.; Delwaide, Jean ULg et al

in Gastroenterology (1994), 106(4), 43-43

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See detailOpposite effects of valproate on Tax and HBZ expressions in T-lymphocytes from HTLV-1 asymptomatic carriers and HAM/TSP patients.
Belrose, Gildas; Gross, Antoine; Olindo, Stéphane et al

in Blood (2011), 118(9), 2483-2491

A determinant of human T-lymphotropic virus-1 (HTLV-1)–associated myelopathy/ tropical spastic paraparesis (HAM/TSP) development is the HTLV-1–infected cell burden. Viral proteins Tax and HBZ, encoded by ... [more ▼]

A determinant of human T-lymphotropic virus-1 (HTLV-1)–associated myelopathy/ tropical spastic paraparesis (HAM/TSP) development is the HTLV-1–infected cell burden. Viral proteins Tax and HBZ, encoded by the sense and antisense strands of th pX region, respectively, play key roles in HTLV-1 persistence. Tax drives CD4 - cel clonal expansion and is the immunodominant viral antigen recognized by the immune response. Valproate (2-n-propylpentanoic acid, VPA), a histone deacetylase inhibitor, was thought to trigger Tax expression, thereby exposing the latent HTLV-1 reservoir to immune destruction. We evaluated the impact of VPA on Tax, Gag, and HBZ expressions in cultured lymphocytes from HTLV-1 asymptomatic carriers and HAM/TSP patients. Approximately one-fifth of proviruspositive CD4 T cells spontaneously became Tax-positive, but this fraction rose to two-thirds of Tax positive–infected cells when cultured with VPA. Valproate enhanced Gag-p19 release. Tax- and GagmRNA levels peaked spontaneously, before declining concomitantly to HBZmRNA increase. VPA enhanced and prolonged Tax-mRNA expression, whereas it blocked HBZ expression. Our findings suggest that, in addition to modulating Tax expression, another mechanism involving HBZ repression might determine the outcome ofVPAtreatment on HTLV-1–infected– cell proliferation and survival. [less ▲]

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See detailL'opposition en procédure pénale
Michiels, Olivier ULg

Book published by Larcier (2004)

L'ouvrage consiste en une étude de l'opposition qui est traditionnellement définie comme le recours du juge mal informé devant le juge bien informé. Son but est de fournir au lecteur les clefs pour ... [more ▼]

L'ouvrage consiste en une étude de l'opposition qui est traditionnellement définie comme le recours du juge mal informé devant le juge bien informé. Son but est de fournir au lecteur les clefs pour résoudre les problèmes auxquels il peut être confronté. L'auteur suit un schéma d'analyse classique partant de généralités pour, par la suite, aborder des points plus spécifiques relatifs à la forme, aux délais et aux effets de l'opposition. [less ▲]

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See detailL'opposition et le délai de prescription de la peine
Michiels, Olivier ULg

in Revue de Droit Pénal et de Criminologie (2015)

L'opposition formée après le délai de prescription de la peine prononcée par défaut est, sauf cas de force majeure, irrecevable.

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See detailOppositions et arguments paysagers dans le projet éolien en Wallonie
Vanderheyden, Vincent ULg; Schmitz, Serge ULg

Conference (2013, December 09)

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See detailOppositions locales et dynamiques d'environnementalisation
Mormont, Marc ULg; Bertrand, Anne

in Espaces et Sociétés (Paris, France) (2000), (101-102), 93-112

Local conflicts provoke collective action that through new coalitions induce reformulations of the problems and elarge scope and scaling of environmental problems. These processes are called ecologization ... [more ▼]

Local conflicts provoke collective action that through new coalitions induce reformulations of the problems and elarge scope and scaling of environmental problems. These processes are called ecologization dynamics and are going to transform environmental politics. [less ▲]

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See detailOPRs of Ammonia versus 14N/15N Ratios in CN in 15 Comets
Shinnaka, Yoshiharu; Kawakita, H.; Kobayashi, H. et al

in Bulletin of the American Astronomical Society (2010, October 01), 42

The solar system was formed from interstellar matter 4.6 Gyrs ago and comets are considered as remnants of icy planetesimals formed in the early solar system. One of interesting primordial characters of ... [more ▼]

The solar system was formed from interstellar matter 4.6 Gyrs ago and comets are considered as remnants of icy planetesimals formed in the early solar system. One of interesting primordial characters of cometary ice is an ortho-to-para abundance ratio (OPR) of molecules such as H2O, NH3, etc. The OPR probably indicates the molecular formation temperatures in the solar nebula or in the pre-solar molecular cloud. We determined the OPRs of ammonia by using the high dispersion optical spectra of NH2 in 15 comets: C/1995 O1 (Hale-Bopp), C/1999 S4 (LINEAR), C/2001 A2 (LINEAR), C/2000 WM1 (LINEAR), 153P/Ikeya-Zhang, C/2002 V1 (NEAT), C/2002 X5 (Kudo-Fujikawa), C/2002 Y1 (Juels-Holvorcem), C/2001 Q4 (NEAT), C/2002 T7 (LINEAR), C/2003 K4 (LINEAR), 8P/Tuttle, 88P/Howell, 9P/Tempel 1, and 73P-B and -C/Schwassmann-Wachmann 3. The observations were mainly carried out by the Ultraviolet and Visual Echelle Spectrograph (UVES) mounted on the Very Large Telescope (VLT) in Chile. Other telescopes/instruments were also used in some cases. The OPRs of ammonia are determined from OPRs of NH2 (0,9,0) ro-vibronic band around 600 nm. Although absorption lines (by the telluric atmosphere) and cometary C2 emission lines blended affected to NH2 emission lines in this region, we removed them in our analysis. The determined OPRs of ammonia clustered around 30K but not in the cases of 73P-B and -C. This situation is very similar to that of 14N/15N ratios in CN (i.e., 73P-B and -C are quite peculiar relative to other comets). We discuss about the relationship between the OPRs of ammonia and 14N/15N ratios in CN in these 15 comets. Our results indicate the formation of materials at relatively higher temperatures for 73P-B and -C than other comets. [less ▲]

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See detailOptic nerve sheath meningiomas
Litré, Claude Fabien ULg; Colin, P; Rousseaux, P et al

in Neuro-Chirurgie (2010), 56(2-3),

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See detailOptical analysis of particle size and chromite liberation from pulp samples of a UG2 ore regrinding circuit
Leroy, Sophie ULg; Dislaire, Godefroid; Bastin, David ULg et al

in Minerals Engineering (2011), 24

Since the early seventies high chromite and low base metal sulphide (BMS) contents of the UG2 reef imposes technological challenges to mineral processors and extractive metallurgists. Forty years later ... [more ▼]

Since the early seventies high chromite and low base metal sulphide (BMS) contents of the UG2 reef imposes technological challenges to mineral processors and extractive metallurgists. Forty years later, particle size distribution and size by size mineralogy are considered as key factors to the continuous improvement of the UG-2 ore metallurgy. With the successful development of ultra fine grinding technologies, a compromise has to be found between fine grinding to achieve platinum group minerals liberation and to avoid the overgrinding of gangue minerals, especially chromite gangue which is detrimental in smelting process. Indeed, fine chromite grains, despite of being naturally hydrophobic mineral, can be recovered in flotation concentrate by entrainment. In addition, overgrinding also increase liberation of naturally floatable gangue (talc) which contaminate the concentrate and need to be controlled during flotation. In this paper, innovative techniques of single particle image analysis from both dry and wet samples have been tentatively used to assess the chromite particle size distribution and the chromite grade of samples taken from a secondary milling circuit. Preliminary results demonstrate excellent potential for online particle imaging making use of both the particle geometry (size, shape) and the optical properties (translucency). [less ▲]

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See detailOptical and magnetic properties of Fe2+ and Cr2+ in II-VI semiconductors: The Jahn-Teller effect
Colignon, David ULg; Kartheuser, Eduard ULg; Rodriguez, Sergio et al

in Journal of Crystal Growth (1996), 159(1-4), 875-878

The D-5 terms of Fe2+ and Cr2+ in the tetrahedral potential at cation sites in II-VI compounds split into orbital doublet and triplet states. While in Cr2+ the orbital tripler has lower energy than the ... [more ▼]

The D-5 terms of Fe2+ and Cr2+ in the tetrahedral potential at cation sites in II-VI compounds split into orbital doublet and triplet states. While in Cr2+ the orbital tripler has lower energy than the doublet the opposite is the case in Fe2+. Both ions have singlet ground states after the spin-orbit interaction is taken into account and, hence, both are Van Vleck paramagnets. The optical absorption spectra of Fe and Cr based materials differ and are explained on the basis of a dynamic Jahn-Teller effect in the former and a static one in the latter. These considerations permit us to explain the optical as well as the magnetic properties observed in these materials. [less ▲]

Detailed reference viewed: 35 (1 ULg)