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See detailCore-polarization effects and radiative lifetime measurements in Pr III
Biémont, Emile ULg; Garnir, Henri-Pierre ULg; Palmeri, P. et al

in Physical Review. A (2001), 64

Detailed reference viewed: 13 (1 ULg)
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See detailCore-polarization effects in Cu II
Biémont, Emile ULg; Pinnington, E. H.; Quinet, Pascal ULg et al

in Physica Scripta (2000), 61

Detailed reference viewed: 11 (3 ULg)
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See detailCore-polarization effects in doubly ionized cerium (Ce III) for transitions of astrophysical interest
Biémont, Emile ULg; Quinet, Pascal ULg; Ryabchikova, T. A.

in Monthly Notices of the Royal Astronomical Society (2002), 336(4), 1155-1160

The importance of core-polarization effects on oscillator strength determination in Ce III is emphasized. The inclusion of these effects in relativistic Hartree-Fock (HFR) calculations leads to ... [more ▼]

The importance of core-polarization effects on oscillator strength determination in Ce III is emphasized. The inclusion of these effects in relativistic Hartree-Fock (HFR) calculations leads to theoretical lifetime values for some 4f6p levels of this ion in close agreement with recent time-resolved laser-induced fluorescence measurements. These new atomic data, the most accurate to date, have allowed the refinement of the stellar abundance determination of cerium in the chemically peculiar star HD 192913, but have not altered in a drastic way the conclusions derived in recent analyses regarding the overabundance of this element. [less ▲]

Detailed reference viewed: 7 (0 ULg)
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See detailCore-polarization effects in the Cadmium Isoelectronic Sequence
Biémont, Emile ULg; Froese Fischer, C.; Godefroid, M. R. et al

in Physical Review. A (2000), 62

Detailed reference viewed: 9 (2 ULg)
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See detailCore-shell AgSiO2-Protoporphyrin IX nanoparticle: Effect of the Ag core on reactive oxygen species generation
Lismont, Marjorie ULg; Pàez Martinez, Carlos ULg; Dreesen, Laurent ULg

in SPIE proceeding - Colloidal Nanoparticles for Biomedical Applications X (2015, February)

Photodynamic therapy (PDT) for cancer is based on the use of a light sensitive molecule to produce, under specific irradiation, toxic reactive oxygen species (ROS). A way to improve the therapy efficiency ... [more ▼]

Photodynamic therapy (PDT) for cancer is based on the use of a light sensitive molecule to produce, under specific irradiation, toxic reactive oxygen species (ROS). A way to improve the therapy efficiency is to increase the amount of produced ROS near cancer cells. This aim can be achieved by using a metal enhanced process arising when an optically active molecule is located near a metallic nanoparticle (NP). Here, the coupling effect between silver (Ag) NPs and protoporphyrin IX (PpIX) molecules, a clinically approved photosensitizer, is studied compared first, to PpIX fluorescence yield and second, to ROS production efficiency. By applying a modified Stöber process, PpIX was encapsulated into a silica (SiO2) shell, surrounding a 60 nm sized Ag core. We showed that, compared to SiO2-PpIX NPs, Ag coated SiO2-PpIX NPs dramatically decreased PpIX fluorescence together with singlet oxygen production efficiency. However, after incubation time in the dark, the amount of superoxide anions generated by the Ag doped sample was higher than the control sample one. [less ▲]

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See detailCore-shell InP-CdS nanowires: fabrication and study
Zanolli, Zeila ULg; Wacaser, Brent A; Pistol, Mats-Erik et al

in Journal of Physics : Condensed Matter (2007), 19(29),

InP nanowires are fabricated by organo-metallic vapour phase epitaxy and studied via photoluminescence measurements performed on single nanowires, finding evidence of state filling with increasing ... [more ▼]

InP nanowires are fabricated by organo-metallic vapour phase epitaxy and studied via photoluminescence measurements performed on single nanowires, finding evidence of state filling with increasing excitation power density. To increase flexibility in fabrication technology we developed a wet chemical procedure to grow a CdS shell on these wires. In these InP–CdS wires the luminescence efficiency was decreased with respect to the bare wires. The CdS capping procedure needs further investigations to improve the emission properties of nanowires, in order to become technically useful. We suggest as possible improvements of this technique to increase the bath temperature and/or illuminate the sample with UV radiation during the capping procedure. [less ▲]

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See detailCore-Shell-Corona Micelles by PS-b-P2VP-b-PEO Copolymers: Focus on the Water-Induced Micellization Process
Willet, Nicolas ULg; Gohy, Jean-François; Auvray, Loïc et al

in Langmuir (2008), 24(7), 3009-3015

It is now well established that amphiphilic PS-b-P2VP-b-PEO linear triblock copolymers can form multilayered assemblies, thus core-shell-corona (CSC) micelles, in water. Micellization is triggered by ... [more ▼]

It is now well established that amphiphilic PS-b-P2VP-b-PEO linear triblock copolymers can form multilayered assemblies, thus core-shell-corona (CSC) micelles, in water. Micellization is triggered by addition of a small amount of water into a dilute solution of the PS-b-P2VP-b-PEO copolymer in a non-selective organic solvent. However, the phenomena that take place at the very beginning of this process are poorly documented. How these copolymer chains are perturbed by addition of water was investigated in this work by light and neutron scattering techniques and transmission electron microscopy. It was accordingly possible to determine the critical water concentration (CWC), the compactness of the nano-objects in solution, their number of aggregation, and their hydrodynamic diameter at each step of the micellization process. [less ▲]

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See detailCore-Shell-Corona micelles with a responsive shell
Willet, Nicolas ULg; Gohy, Jean-François; Jérôme, Robert ULg

Conference (2002, April 12)

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See detailCore-shell-corona micelles with a responsive shell
Gohy, Jean-François; Willet, Nicolas ULg; Varshney, Sunil et al

in Angewandte Chemie (International ed. in English) (2001), 40(17), 3214-3216

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See detailCore-shell-corona micelles: focus on the pH-responsive shell
Willet, Nicolas ULg; Gohy, Jean-François; Jérôme, Robert ULg

Conference (2005, October)

Detailed reference viewed: 4 (0 ULg)
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See detailCoréférence et stratégie des fonctions parallèles dans le cas des pronoms anaphoriques ambigus
Rondal, Jean-Adolphe ULg; Leyen, N.; Brédart, Serge ULg et al

in Current Psychology of Cognition [=CPC] = Cahiers de Psychologie Cognitive [=CPC] (1984), 4

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See detailCornéocytes, Malassezia et pellicules: une trilogie à dompter.
Pierard, Gérald ULg; Uhoda, Emmanuelle ULg; Franchimont, Claudine ULg

in Réalités Thérapeutiques en Dermato-Vénéréologie (2009), 183

Les pellicules et la dermite séborrhéique font vraisemblablement partie d’un continuum d’états desquamatifs associés à une colonisation de la couche cornée par des levures du genre Malassezia spp. Cette ... [more ▼]

Les pellicules et la dermite séborrhéique font vraisemblablement partie d’un continuum d’états desquamatifs associés à une colonisation de la couche cornée par des levures du genre Malassezia spp. Cette dernière s’avère hétérogène, allant de la rareté à l’abondance selon les cornéocytes. La vitesse d’action des shampooings antipelliculaires met en doute un effet antifongique direct, mais suggère plutôt l’intervention des défenses immunitaires innées. [less ▲]

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See detailCorneofungimetry bioassay on Malassezia spp. under ketoconazole and desonide influences.
Pierard, Claudine ULg; Vroome, Valérie; Cauwenbergh, Geert et al

in Skin Pharmacology & Physiology (2005), 18(2), 98-102

BACKGROUND: Glucocorticoids can boost some Malassezia-driven dermatoses. However, both antifungals and topical corticosteroids improve lesions of seborrheic dermatitis. OBJECTIVE: To revisit the topical ... [more ▼]

BACKGROUND: Glucocorticoids can boost some Malassezia-driven dermatoses. However, both antifungals and topical corticosteroids improve lesions of seborrheic dermatitis. OBJECTIVE: To revisit the topical activity of the antifungal ketoconazole and the corticosteroid desonide on Malassezia growth on human stratum corneum. Material and Methods: The computer-assisted corneofungimetry bioassay was used to compare the growth of M. furfur, M. globosa and M. restricta on human stratum corneum coated with olive oil. Four blinded gel formulations were tested. They contained either 2% ketoconazole, 0.05% desonide or a combination of 2% ketoconazole and 0.05% desonide; one gel was unmedicated. Untreated stratum corneum and specimens coated with a 2% ketoconazole cream were used as negative and positive comparators, respectively. A total of 45 samples (15 M. furfur, 15 M. globosa, and 15 M. restricta) were used for each test formulation in this randomized, double-blind study. RESULTS: The 2% ketoconazole gel and cream and the combination of 2% ketoconazole and 0.05% desonide formulation abated similarly and significantly the M. furfur, M. globosa and M. restricta growth. The 3 species were similarly sensitive to these formulations. By contrast, no significant inhibitory effect was yielded by the 0.05% desonide gel and the vehicle. CONCLUSION: The presence of 0.05% desonide does not impair or improve the Malassezia susceptibility to 2% ketoconazole when growing on lipid-enriched human stratum corneum. [less ▲]

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See detailCorneosurfametry and corneoxenometry.
PIERARD, Gérald ULg; Franchimont, Claudine ULg; REGINSTER, Marie-Annick ULg

in Berardesca, Enzo; Wilhelm, K.P.; Maibach, H.I. (Eds.) Non invasive diagnostic techniques in clinical dermatology. (2014)

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See detailCorner asymptotics of the magnetic potential in the eddy-current model
Dauge, Monique; Dular, Patrick ULg; Krähenbühl, Laurent et al

in Mathematical Methods in the Applied Sciences (2014), 37(13), 19241955

In this paper, we describe the scalar magnetic potential in the vicinity of a corner of a conducting body embedded in a dielectric medium in a bidimensional setting. We make explicit the corner asymptotic ... [more ▼]

In this paper, we describe the scalar magnetic potential in the vicinity of a corner of a conducting body embedded in a dielectric medium in a bidimensional setting. We make explicit the corner asymptotic expansion for this potential as the distance to the corner goes to zero. This expansion involves singular functions and singular coefficients. We introduce a method for the calculation of the singular functions near the corner and we provide two methods to compute the singular coefficients: the method of moments and the method of quasi-dual singular functions. Estimates for the convergence of both approximate methods are proven. We eventually illustrate the theoretical results with finite element computations. The specific non-standard feature of this problem lies in the structure of its singular functions: They have the form of series whose first terms are harmonic polynomials and further terms are genuine non-smooth functions generated by the piecewise constant zeroth order term of the operator. [less ▲]

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See detailCornering the axionlike particle explanation of quasar polarizations
Payez, Alexandre ULg

in Physical Review. D : Particles and Fields (2012), 85(8), 087701

In a series of papers, it has been shown that the distribution of polarization position angles for visible light from quasars is not random in extremely large regions of the sky. As explained in a recent ... [more ▼]

In a series of papers, it has been shown that the distribution of polarization position angles for visible light from quasars is not random in extremely large regions of the sky. As explained in a recent article, the measurement of vanishing circular polarization for such quasars is an important problem for a mechanism involving the mixing with axionlike particles in external magnetic fields. In this paper, we stress that a recent report of similar coherent orientations of polarization in radio waves further disfavors the need for such particles, as an effect at these wavelengths would be extremely suppressed or would directly contradict data. [less ▲]

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See detailIl coro del re. Capo e comprimari nella storiografia e nell’epos fra IV e III secolo a.C.
Caneva, Stefano ULg

in Quaderni di Storia (2013), 77

The paper investigates court thiasoi and banquet scenes as well as the general councils of the Macedonian army in the historiography on Alexander and the Successors and in Apollonius’ Argonautica in order ... [more ▼]

The paper investigates court thiasoi and banquet scenes as well as the general councils of the Macedonian army in the historiography on Alexander and the Successors and in Apollonius’ Argonautica in order to show parallels in the representation of the relations between the king and his entourage. The studied cases (Alexander in Asia; Ptolemy in Memphis; Jason in the Argonauts’ councils) allow a reappraisal of the work of the historian Cleitarchus and the poet Apollonius Rhodius and show a common portrait of the leader as primus inter pares. In epic as in historiography, the leader is chosen by the hetairoi on the ground of his outstanding leading skills and his role as a religious chief makes him play a function similar to that of a priest in a thiasos. [less ▲]

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See detailUn corollaire inédit des lois de Kepler
Folie, François ULg

in Bulletins de l'Académie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique (1892), 3e série, t. 24(12), 542-543

The law discovered by the meteorologist D. Dewar, and relative to the report of the average speeds of planets between them, is a corollary of Kepler's laws. The author uses it for elliptic orbits by ... [more ▼]

The law discovered by the meteorologist D. Dewar, and relative to the report of the average speeds of planets between them, is a corollary of Kepler's laws. The author uses it for elliptic orbits by stopping at the second eccentricity’s power. [less ▲]

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See detailCoronagraphic imaging of three weak-line T Tauri stars: evidence of planetary formation around PDS 70
Riaud, Pierre ULg; Mawet, Dimitri ULg; Absil, Olivier ULg et al

in Astronomy and Astrophysics (2006), 458

Context: High angular resolution imaging of nearby pre-main sequence stars with ages between 1 and 30 Myr can give valuable information on planet formation mechanisms. This range of ages is thought to ... [more ▼]

Context: High angular resolution imaging of nearby pre-main sequence stars with ages between 1 and 30 Myr can give valuable information on planet formation mechanisms. This range of ages is thought to correspond to the dissipation of the optically thick dust disks surrounding young stars and to the end of the planet formation. Aims: This paper presents new observations of three weak-line T Tauri Stars (WTTS) of intermediate ages ranging from 7 to 16 Myr. It aims at increasing the knowledge and sample of circumstellar disks around "old" WTTS. Methods: We observed three stars with the VLT's NAOS-CONICA adaptive optics system in coronagraphic mode. The four-quadrant phase mask coronagraph was used to improve the dynamic range (by a factor of 100) while preserving the high angular resolution (inner working angle of 0farcs 15). Results: One object of our sample (PDS 70), a K5 star, exhibits a brown dwarf companion and a disk in scattered light with a surface brightness power law of r[SUP]-2.8[/SUP], extending from a distance of 14 to 140 AU (assuming a stellar distance of 140 pc) and an integrated luminosity of 16.7 mJy in the K_s-band. The mass of the companion can be estimated to be within a range between 27 and 50 Jupiter masses with an effective temperature of 2750 ± 100 K. This object also shows a resolved outflow stretching up to 550 AU. Conclusions: This newly detected circumstellar disk shows strong similarities with the disk around TW Hya, and adds to the observed population of "old" TTS surrounded by circumstellar material. Moreover, three clues of planetary formation are brought to light by this study. [less ▲]

Detailed reference viewed: 53 (16 ULg)