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
Peer Reviewed
See detailA natural neighbour method for materially non linear problems based on Fraeijs de Veubeke variational principle
Xiang, Li; Cescotto, Serge ULg; Rossi, Barbara ULg

in Acta Mechanica Sinica (2009), 25(1), 83-93

The natural neighbour method can be considered as one of many variants of the meshless methods. In the present paper, a new approach based on the Fraeijs de Veubeke (FdV) functional, which is initially ... [more ▼]

The natural neighbour method can be considered as one of many variants of the meshless methods. In the present paper, a new approach based on the Fraeijs de Veubeke (FdV) functional, which is initially developed for linear elasticity, is extended to the case of geometrically linear but materially non-linear solids. The new approach provides an original treatment to two classical problems: the numerical evaluation of the integrals over the domain A and the enforcement of boundary conditions of the type u i = ũ i on S u . In the absence of body forces (F i = 0), it will be shown that the calculation of integrals can be avoided and that boundary conditions of the type u i = ũ i on S u can be imposed in the average sense in general and exactly if ũ i is linear between two contour nodes, which is obviously the case for ũ i = 0. [less ▲]

Detailed reference viewed: 81 (14 ULg)
See detailNatural Oils and Fats as Renewable Raw Materials for the Polymer Industry
Richel, Aurore ULg

Scientific conference (2007, March 09)

The valorisation of natural (renewable) vegetable oils and animal fats in the polymer industry is described as a example of "green chemistry". We underline that these renewable feedstocks find brilliant ... [more ▼]

The valorisation of natural (renewable) vegetable oils and animal fats in the polymer industry is described as a example of "green chemistry". We underline that these renewable feedstocks find brilliant applications as additives, polymers or co-polymers. These materials offer convenient alternatives to classical petrochemical-based compounds. [less ▲]

Detailed reference viewed: 19 (4 ULg)
Full Text
Peer Reviewed
See detailNatural orifice transluminal endoscopic surgery (NOTES): when a step forward may be a step too soon or too far.
Detry, Olivier ULg; Nsadi, Berthier; Kohnen, Laurent ULg

in Surgical Endoscopy (2010), 2010(24), 1213-1214

Detailed reference viewed: 89 (16 ULg)
Peer Reviewed
See detailNatural radiative lifetimes in Ce II
Zhang, Z. G.; Svanberg, S.; Jiang, Z. et al

in Physica Scripta (2001), 63

Detailed reference viewed: 10 (1 ULg)
Peer Reviewed
See detailNatural risks evaluation by remote sensing: lineaments research in the Pastaza basin (Ecuador)
Ozer, Pierre ULg; Cornet, Yves ULg; Moreno, A. et al

in Proceedings of the First ERS-1 Pilot Project Workshop, Toledo, Spain, 22-24 June 1994 (1994)

Detailed reference viewed: 38 (16 ULg)
Full Text
Peer Reviewed
See detailNatural spatial variability of algal endosymbiont density in the coral Acropora globiceps: a small-scale approach along environmental gradients around Moorea (French Polynesia)
Ladrière, Ophélie ULg; Penin, Lucie; Van Lierde, Elodie et al

in Journal of the Marine Biological Association of the United Kingdom (2013)

This study provides a baseline describing natural small scale variability of Symbiodinium density in the sentinel coral Acropora globiceps during the summer, under non-bleaching conditions. Spatial scales ... [more ▼]

This study provides a baseline describing natural small scale variability of Symbiodinium density in the sentinel coral Acropora globiceps during the summer, under non-bleaching conditions. Spatial scales investigated range from the colony scale (1–10 cm, i.e. among branches of the same colony) to the reef scale (1–10 km, i.e. among stations distributed over several locations and depths), at Moorea Island, French Polynesia. The coral–Symbiodinium symbiosis is a key process in scleractinian coral physiology, and Symbiodinium density provides an easy-to-measure and inexpensive biomarker of this symbiosis health. Spatial variability of three major environmental factors: light intensity, sedimentation and water motion was also assessed to evaluate their potential link with Symbiodinium density. Density of Symbiodinium did not significantly differ within colonies or among colonies within a station. However, a marked depth gradient was observed, showing increasing density with increasing depth and decreasing light intensity. These observations provide an interesting reference for forthcoming comparisons with disturbed conditions, such as bleaching events. [less ▲]

Detailed reference viewed: 25 (2 ULg)
Full Text
Peer Reviewed
See detailNatural variation of the root morphological response to nitate supply in Arabidopsis thaliana
De Pessemier, Jérôme; Chardon, Fabien; Juraniec, Michal et al

in Mechanisms of Development (2013), 130(1), 45-53

Detailed reference viewed: 65 (9 ULg)
Peer Reviewed
See detailNatural-Convection Above Line Heat-Sources In Greenhouse Canopies
Aubinet, Marc ULg; Deltour, Jules

in International Journal of Heat and Mass Transfer (1994), 37(12),

Detailed reference viewed: 20 (2 ULg)
Peer Reviewed
See detailLa naturalisation de l'espace rural: des réserves aux parcs naturels en Wallonie
Mormont, Marc ULg

in Revue Belge de Géographie (1987), 111(1-2), 7-14

Detailed reference viewed: 38 (1 ULg)
Peer Reviewed
See detailNaturalisme et pragmatisme
Leclercq, Bruno ULg

Conference (2001, November 13)

Detailed reference viewed: 7 (0 ULg)
Full Text
Peer Reviewed
See detailA naturalistic study of the determinants of health related quality of life improvement in osteoarthritic patients treated with non-specific non-steroidal antiinflammatory drugs
Rabenda, Véronique ULg; Burlet, N.; Ethgen, Olivier ULg et al

in Annals of the Rheumatic Diseases (2005), 64(5), 688-693

OBJECTIVES: To capture changes in the quality of life (QoL) occurring in patients with osteoarthritis (OA) during treatment with non-specific non-steroidal anti-inflammatory drugs (NSAIDs) and to identify ... [more ▼]

OBJECTIVES: To capture changes in the quality of life (QoL) occurring in patients with osteoarthritis (OA) during treatment with non-specific non-steroidal anti-inflammatory drugs (NSAIDs) and to identify factors that predict such changes. METHODS: A naturalistic, prospective follow up of 783 patients with OA in whom primary care physicians decided to start treatment with non-selective NSAIDs. Short Form-36 (SF-36) and the Western Ontario and McMaster Universities OA index (WOMAC) were assessed at baseline and after 3 months. Baseline results were compared with QoL values in 4800 subjects randomly selected from the general population. Multiple regression analysis was performed to identify determinants of QoL at baseline and measures influencing changes in SF-36 or WOMAC during follow up. RESULTS: All QoL dimensions were significantly (p<0.01) decreased in patients with OA compared with controls. Significant improvement (p<0.05) in four dimensions of the SF-36 (vitality, role emotional, role physical, bodily pain) and in all components of the WOMAC was seen between baseline and month 3. Older age, female sex, longer duration of OA, and a higher number of comorbidities were the major determinants of a poor QoL at baseline. Maximal benefit from non-specific NSAIDs was seen in patients with the most severe impairment in QoL and the shortest duration of OA. CONCLUSION: OA negatively impacts all dimensions of the QoL. Non-specific NSAIDs improve the QoL in patients with OA treated in a "real life setting". The profile of patients receiving maximal benefit from such treatment may be of interest for health providers, enabling them to decide who should preferentially be given cytoprotective treatments or coxibs. [less ▲]

Detailed reference viewed: 17 (2 ULg)
Full Text
Peer Reviewed
See detailNaturalization and impact of a horticultural species, Cotoneaster horizontalis (Rosaceae) in biodiversity hotspots in Belgium
Piqueray, Julien ULg; Mahy, Grégory ULg; Vanderhoeven, Sonia

in Belgian Journal of Botany (2008), 141

Cultivation of ornamental plant species has been recognized to foster plant naturalization of exotics by counteracting environmental stochasticity and continuously providing propagules. As a preliminary ... [more ▼]

Cultivation of ornamental plant species has been recognized to foster plant naturalization of exotics by counteracting environmental stochasticity and continuously providing propagules. As a preliminary attempt to describe the invasion status of C horizontalis, we gathered information on the occurrence of the species in Belgium by compiling various databases. We assessed the naturalization status of C. horizontalis in Belgian calcareous grasslands, high-value habitats recognized as biodiversity hotspots, by characterizing its occurrence, population status, preferred habitats, invaded communities, growth rate and fruiting capacity. We also assessed the impact of the species on calcareous grasslands communities and on individual species. Cotoneaster occurred in seven of the nine investigated sites, with densities varying from 0.34 to 10 individuals/ha. In the most invaded sites, the high proportion of small individuals suggests an important ongoing colonization process, emphasized by the fact that fruiting capacities were demonstrated for 3-year-old individuals. Invaded habitats were typically Mosan Xerobromion habitats, which are priority Natura 2000 habitats. The presence of C horizontalis was associated with changes in both the structure and composition of the community by decreasing species richness and diversity, and affecting grassland specialist species. These impacts are expected to intensify over time with population age and increasing propagule pressure due to close urbanization. [less ▲]

Detailed reference viewed: 107 (23 ULg)
Full Text
Peer Reviewed
See detailNaturally occurring BLV- LTR variants show differential binding with transcriptional regulator E2F-4
Rodriguez, Sabrina ULg; Varone, C.; Cánepa, E. et al

in AIDS Research and Human Retroviruses (2007, April 23), 23(4), 657

Naturally occurring BLV- LTR variants show differential binding with transcriptional regulator E2F-4. Sabrina M. Rodríguez1, Cecilia Varone2, Eduardo Cánepa2, Karina Trono1. srodriguez@cnia.inta.gov.ar ... [more ▼]

Naturally occurring BLV- LTR variants show differential binding with transcriptional regulator E2F-4. Sabrina M. Rodríguez1, Cecilia Varone2, Eduardo Cánepa2, Karina Trono1. srodriguez@cnia.inta.gov.ar 1Instituto de Virología. CICVyA. INTA-Castelar. Castelar. Buenos Aires. Argentina 2Catedra de Biología Molecular. Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires. Buenos Aires. Argentina The proviral Long Terminal Repeats (LTR) of retroviruses constitute a critical element involved in the regulation of viral and cellular gene expression. It is well known for some viruses within the Retroviridae family that minimal changes in this region can influence tropism, virulence and pathogenicity. The aim of this work was to elucidate if there is any association between the binding capacity of the Bovine Leukemia Virus (BLV) LTR region with cellular transcription factors and the pathogenic evolution of natural infection. The complete 5´LTR sequence amplified from mononuclear cells and tumour tissues of 40 naturally infected cattle was analyzed. Sequence analysis revealed the presence of two LTR variants associated with the different BLV pathogenic phenotypes: aleukemic (AL), persistent lymphocitosis (PL) and lymphosarcoma (LS). Analysis by EMSA showed a clearly weaker specific binding pattern when a LS-derived sequence was used as probe. Together with this finding, we also demonstrated by gel shift and supershift assays that the cellular transcription factor E2F-4 specifically interacts with a putative E2F binding motif within the U5 region of BLV 5`LTR unveiled by “in sillico” analysis. The results of this work demonstrates for the first time the presence of differential binding capacity of BLV natural derived variants to cellular nuclear proteins, together with physical characterization of an E2F-4 binding site in the U5 region of BLV-LTR that shows preferential binding to AL/PL derived sequences. These findings can contribute to the knowledge of LTR-driven regulation of viral and cellular gene expression. [less ▲]

Detailed reference viewed: 7 (0 ULg)
Peer Reviewed
See detailNature and distribution of pulmonary vascular resistance during endotoxin insult in intact dogs
D'Orio, Vincenzo ULg; FATEMI, M; MARNETTE, JM et al

in American Review of Respiratory Disease (1992), 4

Detailed reference viewed: 12 (1 ULg)