References of "2003"
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See detailGene flow among wild Phaseolus lunatus L. populations in the Central Valley of Costa Rica
Ouedraogo, M.; Maquet, A.; Baudoin, Jean-Pierre ULg

in Annual Report Bean Improvement Cooperative (2003), 46

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See detailGraulichite-(Ce), a new arsenate mineral from the Stavelot Massif, Belgium
Hatert, Frédéric ULg; Pasero, Marco; Fransolet, André-Mathieu ULg et al

in European Journal of Mineralogy (2003), 15(4, JUL-AUG), 733-739

Graulichite-(Ce), ideally CeFe33+(AsO4)(2)(OH)(6), is a new mineral species from Hourt, Stavelot Massif, Belgium. It occurs in the most altered parts of a Devillian quartzite (Lower to Middle Cambrian ... [more ▼]

Graulichite-(Ce), ideally CeFe33+(AsO4)(2)(OH)(6), is a new mineral species from Hourt, Stavelot Massif, Belgium. It occurs in the most altered parts of a Devillian quartzite (Lower to Middle Cambrian), in close association with arsenopyrite, scorodite, mimetite, pharmacosiderite, and goethite. Graulichite-(Ce) forms 80 to 150 mum spherical aggregates of rhombohedral crystals, 50 to 80 mum length, which show the forms {10 (1) over bar2} and {10 (11) over bar}. The mineral is transparent and exhibits a light-green to brownish colour, with a resinous lustre. It is non-fluorescent and shows an irregular fracture, without any perceptible cleavage. The calculated density is 4.42 g/cm(3). Graulichite-(Ce) is uniaxial negative, with a mean refractive index close to 1.97(1) (lambda=590 nm), pleochroic from light green to yellowish. Electron microprobe analyses gave As2O5 31.20, P2O5 0.03, SO3 0.06, SiO2 0.03, Al2O3 3.09, Fe2O3 30.65, SrO 0.24, PbO 0.07, BaO 3.95, CaO 0.03, La2O3 2.26, Ce2O3 15.73, Nd2O3 2.08, H2O (calc.) 8.37, total 97.79 wt. %. The resulting empirical formula, calculated on the basis of 6 cations, is (Ce0.67Ba0.18La0.10Nd0.09Sr0.02)(Sigma1.06) (Fe2.683+Al0.42)(Sigma3.10)[(As(1.89)S(.001)square(0.10))(Sigma2.00)O-8][(OH)(5.57)(H2O)(0.43)](Sigma6.00). The single-crystal unit-cell parameters are a=7.288(2) and c=16.812(9) Angstrom, space group R (3) over barm. The seven strongest lines in the X-ray powder-diffraction pattern [d(in Angstrom)(I)(hkil)] are: 3.052(100)(11 (2) over bar3), 3.636(40)(11 (2) over bar0), 2.239(35)(10 (1) over bar7), 1.817(35)(22 (4) over bar0), 2.792(30)(0006), 5.906(25)(10 (1) over bar1), 1.968(25)(30 (3) over bar3). Graulichite-(Ce) is the iron analogue of arsenoflorencite-(Ce), and belongs to the crandallite mineral group, with the alunite-type structure. The crystal structure of graulichite-(Ce) has been refined, based on single-crystal X-ray diffraction data, to R=0.048. [less ▲]

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See detailDifferential expression of alpha1 (IV) and alpha5 (IV) collagen chains in basal-cell carcinoma.
Quatresooz, Pascale ULg; Martalo, Oriane; Pierard, Gérald ULg

in Journal of Cutaneous Pathology (2003), 30(9), 548-52

BACKGROUND: Basement membrane alterations are common in malignancies, and they may indicate tumoral aggressiveness. Distinct patterns of tumoral coverage by collagen IV were reported in nodular and ... [more ▼]

BACKGROUND: Basement membrane alterations are common in malignancies, and they may indicate tumoral aggressiveness. Distinct patterns of tumoral coverage by collagen IV were reported in nodular and aggressive basal-cell carcinomas (BCCs). Differential expressions of alpha (IV) collagen chains were also shown on frozen sections. The aim of our work was to document the immunohistochemical expression of alpha1, alpha3, and alpha5 (IV) collagen chains in BCC after routine fixation and processing. METHODS: The patterns of distribution of alpha1 (IV), alpha3 (IV), and alpha5 (IV) collagen chains were studied in 20 formalin-fixed and paraffin-embedded BCCs showing different infiltrative patterns. One trichoblastoma was used as control. RESULTS: In nodular BCCs, the expression of alpha5 (IV) collagen chain was downregulated and uneven. By contrast, alpha1 (IV) collagen chain expression was preserved around these tumors similar to the surrounding skin. However, the alpha1 (IV) collagen chain expression was discontinuous or absent in BCC areas showing an infiltrative pattern of extension. The alpha3 chain was absent both underneath all BCCs and non-neoplastic skin. CONCLUSIONS: The basement membrane alterations around nodular BCCs involved more precisely the alpha5 (IV) collagen chains. Defects in alpha1 (IV) collagen chain expression seemed to be associated with a tumoral invasive and infiltrative pattern. The biological significance of these findings is unclear. [less ▲]

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See detailThe Acyclic Nucleoside Phosphonate Analogues, Adefovir, Tenofovir And Pmedap, Efficiently Eliminate Banana Streak Virus From Banana (Musa Spp.)
Helliot, B.; Panis, B.; Frison, E. et al

in Antiviral Research (2003), 59(2), 121-126

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See detailThe use of the Tosoh AIA-600II and AIA-1800 immunoassay analysers for the determination of CTNI
Chapelle, Jean-Paul ULg; Aldenhoff, Marie-Claire ULg; Gielen, Jacques

in Clinical Chemistry & Laboratory Medicine (2003), 41

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See detailNanostructured mesoporous TiO2, ZrO2 and SiO2 synthesis by using the non-ionic Cm(EO)n - inorganic alkoxyde system : toward a better understanding on the formation mechanism
Blin, Jean-Luc; Léonard, Alexandre ULg; Gigot, Laurent et al

in Studies in Surface Science and Catalysis (2003), 146

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See detailLa ‘preuve ontologique’ et ses critiques de Descartes à Kant
Dubouclez, Olivier ULg

Scientific conference (2003)

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See detailDe l'utilité des miospores en prospection pétrolière
Steemans, Philippe ULg

Scientific conference (2003)

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See detailDecidability of invariant validation for paramaterized systems
Fontaine, Pascal; Gribomont, Pascal ULg

in Lecture Notes in Computer Science (2003), 2619

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See detailUn fantôme au XVIIe siècle
George, Philippe ULg

in Dumortier, Jean-Louis; George, Philippe (Eds.) Regards sur le XVIIe siècle. Feuillets de la Cathédrale de Liège (2003)

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See detailCitizenship and Migration - S. Castles and A. Davidson
Martiniello, Marco ULg

in International Sociology (2003), 18(2), 417-418

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See detailA Probabilistic Simultaneous Iterative Reconstruction Technique Approach Applied to Subsurface Seismic Tomography
Sage, Sandrine; Grandjean, Gilles; Verly, Jacques ULg

Conference (2003)

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See detailIn vitro paradigms for the study of GnRH neuron function and estrogen effects.
Matagne, Valerie; LEBRETHON, Marie-Christine ULg; Gerard, Arlette et al

in Annals of the New York Academy of Sciences (2003), 1007

The elaboration of in vitro paradigms has enabled direct study of GnRH secretion and the regulation of this process. Common findings using different models are the pulsatile nature and calcium-dependency ... [more ▼]

The elaboration of in vitro paradigms has enabled direct study of GnRH secretion and the regulation of this process. Common findings using different models are the pulsatile nature and calcium-dependency of GnRH secretion, the excitatory effect of glutamate, and the inhibitory or excitatory effect of GABA. Among the different paradigms, the fetal olfactory placode cultures exhibit the unique property of migration in vitro and may retain the capacity to undergo maturational changes in vitro. The short-term incubation of hypothalamic explants obtained at different ages enables one to study developmental changes as well. Estrogens may have important roles in the regulation of GnRH function and can act indirectly via the neighboring neuronal/glial apparatus and directly on GnRH neurons at the cell body and terminal levels. A direct effect is supported by the recent localization of ERalpha and ERbeta transcripts in GnRH neurons using most paradigms. Discrepant effects of estrogens on GnRH neurons were observed since GnRH biosynthesis is inhibited while GnRH secretion can be either stimulated, unaffected, or reduced. It is likely that the regulatory role of sex steroids including estradiol is very complex since it could involve direct and indirect effects on GnRH neurons through genomic and/or non-genomic mechanisms. [less ▲]

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See detailThe Herschel-PACS Grating Drive and its controller
Renotte, Etienne ULg; Callut, Eric ULg; Guiot, Marc ULg et al

(2003)

The Photodetector Array Camera and Spectrometer (PACS), on board the Herschel Space Observatory, is designed for imaging and spectroscopy in the wavelength region between 60 and 210 gm. This paper reports ... [more ▼]

The Photodetector Array Camera and Spectrometer (PACS), on board the Herschel Space Observatory, is designed for imaging and spectroscopy in the wavelength region between 60 and 210 gm. This paper reports the design of the grating cryogenic mechanism of the PACS spectrometer and its remote controller (DEC/MEC) located on the outside of the Herschel cryostat. The PACS grating shall be capable of accurate positioning (4 arcsec) within a large angular stroke (40 arcdeg) in cryogenic environment (4.2 K). Technologies of actuators, position sensors, pivots, dry lubricants, servo-control and cryogenic test set-up are presented. At the other end of the Herschel 10-meter high-impedance cryogenic harness, the DEC/MEC consists of DSP processor-based electronics that control and synchronise the cold focal plane mechanisms and infrared detector arrays. The DEC/MEC operates an on board software running under a real-time operating system. Technologies involved in the control electronics are discussed and correlated to validation tests conducted with actual hardwares. [less ▲]

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See detailEntre “foule” et “public”, les oscillations mallarméennes
Durand, Pascal ULg

in Pinto Eveline (Ed.) Penser l’art et la culture avec les sciences sociales. En l’honneur de Pierre Bourdieu (2003)

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See detailOne-pot surfactant assisted synthesis of aluminosilicate macrochannels with tunable micro- or mesoporous wall structure
Léonard, Alexandre ULg; Blin, J.-L.; Su, B.-L.

in Chemical Communications (2003), 9(20), 2568-2569

A one-step surfactant assisted synthesis pathway was developed leading to novel hierarchical macro-meso- (or micro-)porous aluminosilicates made of an assembly of macrochannels with openings between 0.5 ... [more ▼]

A one-step surfactant assisted synthesis pathway was developed leading to novel hierarchical macro-meso- (or micro-)porous aluminosilicates made of an assembly of macrochannels with openings between 0.5 and 2.0 μm and wormhole-like amorphous walls with tunable pore sizes. [less ▲]

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See detailUrticaire de contact suite à l’application d’un fond de teint contenant de l’huile de sésame
Dezfoulian, Bita ULg; de LA BRASSINNE, Michel ULg

in Revue Française d'Allergologie et d'Immunologie Clinique (2003), 43

A number of cosmetic products containing sesame oil are used for daily cutaneous care. The risk of secondary induction of eczema or even anaphylactic shock after topical use of products containing ... [more ▼]

A number of cosmetic products containing sesame oil are used for daily cutaneous care. The risk of secondary induction of eczema or even anaphylactic shock after topical use of products containing vegetable oils is still unknown. We describe the case of 36-years-old atopic, sesame sensitized women who presented with contact urticaria after application of a foundation cream containing sesame oil. Immediate prick and patch tests with sesame oil, sesame grains, the foundation cream and its components confirmed this sensitization. We discuss the innocuousness of vegetable and animal products present in foods and in cosmetics and problems that may occur when they are used by patients during an inflammatory phase of atopic dermatitis and by patients with specific sensitization to these allergens. [less ▲]

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See detailNa-23 2D 3QMAS NMR and Si-29, Al-27 MAS NMR investigations of Laponite and synthetic saponites of variable interlayer charge
Delevoye, Laurent; Robert, Jean-Louis; Grandjean, Jean ULg

in Clay Minerals (2003), 38

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