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 detailAn investigation of the effects of daily physical education in kindergarten and elementary schools
Piéron, Maurice ULg; Cloes, Marc ULg; Delfosse, Catherine et al

in European Physical Education Review (1996), 2(2), 116-132

The project used different methods of data collection: tests, questionnaires and systematic observation of pupils and teachers. In developing a multiple viewpoint approach, we attenpted to sketch a ... [more ▼]

The project used different methods of data collection: tests, questionnaires and systematic observation of pupils and teachers. In developing a multiple viewpoint approach, we attenpted to sketch a detached view of the implementation of DPE and of tis results. Goals were as follows: (1) Exploring the possible effects of the programme in various areas of children's life that do not arise directly from their activities during physical education lessons. (2) Identifying children's school-life context, in order to identify factors influencing several effects of DPE. The various viewports considered, the results, and the knowledge of external variables all allowed us to identify a convergent package of indications, thus allowing us to think in terms of causality. Often, the benefits came from the children's involvement in the experimental programme. Improvements of motor performance in primary school age children arise from a maturation process and from practice and learning. Nevertheless, it is particularly hard to identify the relative contributions of these two sources. Tracing pupil's development, fro the starting level at beginning of the school year, appeared to allow isolation of the part played by children's activities whitin the school environement. In all grade levels, comparisons confirmed pilot classes superiority. Performances were significantly better in many tests. However, during the year, it seemed that the development of performance due to maturation masked the potential effects of physical activities. A decline in favourable attitudes was observed in every school at the beginning and the end of the school year. A slide from very favourable attitudes towards simply favourable attitudes was observed. ... [less ▲]

Detailed reference viewed: 238 (13 ULg)
Full Text
Peer Reviewed
See detailInvestigation of the effects of histamine inhalation on the tracheobronchial tree of calves by the forced oscillation technique.
Gustin, Pascal ULg; Dhem, A.R.; Lekeux, Pierre ULg et al

in Journal of Veterinary Pharmacology & Therapeutics (1988), 11(4), 374-380

Effects of histamine inhalation were investigated with two different techniques in nine conscious, healthy calves. The oesophageal balloon technique was used to measure the dynamic respiratory compliance ... [more ▼]

Effects of histamine inhalation were investigated with two different techniques in nine conscious, healthy calves. The oesophageal balloon technique was used to measure the dynamic respiratory compliance (Cdyn) and the pulmonary resistance (RL). The reactance (Xrs) and the resistance (Rrs) of the respiratory system were measured at high frequencies by the forced oscillation technique. These parameters were recorded before and after histamine inhalation. Three histamine dihydrochloride solution concentrations were used (16 mg/ml; 32 mg/ml; 64 mg/ml). Histamine inhalation induced a decrease in Cdyn and Xrs an increase in Rrs, RL and of the resonant frequency and a negative frequency dependence of Rrs. Some of these changes were satisfactorily correlated with the histamine solution concentrations. The resonant frequency was well correlated with Cdyn. It was concluded that histamine inhalation induces a decrease of the calibre of small and large airways and a non-homogeneous behaviour of the pulmonary ventilation in awake calves. The forced oscillation technique can be used to perform an inhalation provocation test in unsedated animals. [less ▲]

Detailed reference viewed: 19 (1 ULg)
Peer Reviewed
See detailInvestigation of the Efficiency of the Ti555 Compared with TA6V Alloy in the Case of an Aeronautic Application
Ben Bettaieb, Mohamed ULg; Van Hoof, T.; Zhang, Lihong ULg et al

in Proceedings of the 12th World Conference on Titanium (2011)

Detailed reference viewed: 30 (3 ULg)
Full Text
Peer Reviewed
See detailInvestigation of the efficiency of the Ti555 compared with TA6V alloy in the case of an aeronautic application
Ben Bettaieb, Mohamed ULg; Van Hoof, T.; Zhang, Lihong ULg et al

in The 12th World Conference on Titanium Ti-2011 (2011)

Detailed reference viewed: 27 (9 ULg)
Peer Reviewed
See detailINVESTIGATION OF THE ELECTRICAL-RESISTIVITY BEHAVIOR BETWEEN THE KOSTERLITZ-THOULESS TEMPERATURE AND THE GINZBURG-LANDAU TEMPERATURE IN SPRAY-DRIED BULK BI2SR2CACU2O8+D - THE ROLE OF 2-DIMENSIONAL FLUCTUATIONS AND DEFECTS
Ausloos, Marcel ULg; Bougrine, Hassan ULg; DUVIGNEAUD, P. H. et al

in Physica C (1995), 251(3-4), 337-347

The resistive transition R(T) between the Kosterlitz-Thouless temperature and the Ginzburg-Landau temperature was studied in spray-dried bulk Bi2Sr2CaCu2O8+d superconductors for a magnetic-field range ... [more ▼]

The resistive transition R(T) between the Kosterlitz-Thouless temperature and the Ginzburg-Landau temperature was studied in spray-dried bulk Bi2Sr2CaCu2O8+d superconductors for a magnetic-field range between 0 and 0.3 T. The samples were prepared by the spray-drying technique with Bi2+xSr2-x-yCa2+yCu2O8+d for x = y = 0.05 or 0.1 as a starting composition here. The data analysis was performed assuming various resistive laws previously proposed. When numerically analyzed in terms of a two-dimensional Kosterlitz-Thouless theory the results lead to remarkable quantitative agreement. This implies that the R(T) behavior can be described within a picture of a highly two-dimensional behavior of macroscopic fluctuations of vortex-antivortex depairing type. The role of defects or inhomogeneities in the resistive behavior is outlined. [less ▲]

Detailed reference viewed: 12 (1 ULg)
Full Text
Peer Reviewed
See detailInvestigation of the evolutionary development of the genus bifidobacterium by comparative genomics
Lugli, Gabriele; Milani, Christian; Turroni, Francesca et al

in Applied and Environmental Microbiology (2014)

Detailed reference viewed: 17 (1 ULg)
Full Text
Peer Reviewed
See detailInvestigation of the fine structure of European populations with applications to disease association studies
heath, sc; gut, ivo; brennan, p et al

in European Journal of Human Genetics (2008), 16

An investigation into fine-scale European population structure was carried out using high-density genetic variation on nearly 6000 individuals originating from across Europe. The individuals were ... [more ▼]

An investigation into fine-scale European population structure was carried out using high-density genetic variation on nearly 6000 individuals originating from across Europe. The individuals were collected as control samples and were genotyped with more than 300 000 SNPs in genome-wide association studies using the Illumina Infinium platform. A major East-West gradient from Russian (Moscow) samples to Spanish samples was identified as the first principal component (PC) of the genetic diversity. The second PC identified a North-South gradient from Norway and Sweden to Romania and Spain. Variation of frequencies at markers in three separate genomic regions, surrounding LCT, HLA and HERC2, were strongly associated with this gradient. The next 18 PCs also accounted for a significant proportion of genetic diversity observed in the sample. We present a method to predict the ethnic origin of samples by comparing the sample genotypes with those from a reference set of samples of known origin. These predictions can be performed using just summary information on the known samples, and individual genotype data are not required. We discuss issues raised by these data and analyses for association studies including the matching of case-only cohorts to appropriate pre-collected control samples for genome-wide association studies. [less ▲]

Detailed reference viewed: 9 (4 ULg)
Full Text
Peer Reviewed
See detailInvestigation of the geomechanical aspects of a large landslide by means of a finite-element method: a case study
François, Bertrand ULg; Bonnard, Christophe; Laloui, Lyesse

in 12th IACMAG Conference (2008)

Using advanced geomechanical finite element modelling, it has been possible to simulate the mechanical behaviour of a large slope movement, namely the Triesenberg landslide. This slope is located along ... [more ▼]

Using advanced geomechanical finite element modelling, it has been possible to simulate the mechanical behaviour of a large slope movement, namely the Triesenberg landslide. This slope is located along the Rhine valley in the Principality of Liechtenstein, covering an area of around 5 km2 which includes two villages. Pore water pressure fields calculated by a separated hydrogeological model were used as an input for the geomechanical model. The results obtained through 2- and 3-dimension numerical simulations agree fairly well with field measurements of peak velocity, spatial and temporal distribution of velocity and total displacements. Such results were obtained using a Modified Cam-Clay elasto-plastic constitutive model. In addition, a parametric study has been carried out to evaluate the effect of the selected friction angle and of the range of water pressure variation on the movements during a crisis period. [less ▲]

Detailed reference viewed: 38 (4 ULg)
See detailInvestigation of the glucose metabolism of the chicken by embryonic injection of tolbutamide
Franssens, Lies; Wang, Yufeng; Willems, Els et al

in Proceedings of the XXIV World's Poultry Congress (2012)

Detailed reference viewed: 6 (0 ULg)
Peer Reviewed
See detailInvestigation of the glucose metabolism of the embryonic and neonatal broiler chicks by injection of insulin
Franssens, L.; Lesuisse, J.; Koppenol, A. et al

in EAAP series (2013)

Detailed reference viewed: 3 (0 ULg)
See detailInvestigation of the glucose metabolisme of the chicken embryo by injection of insulin
Franssens, Lies; Koppenol, Astrid; Wang, Yufeng et al

Poster (2012)

Detailed reference viewed: 12 (0 ULg)
Full Text
Peer Reviewed
See detailInvestigation of the influence of packing geometry and of liquid viscosity on the liquid flow morphology by using X-ray tomography
Janzen, Anna; Steube, Julia; Kenig, Evgeny et al

in Proceedings of the 7th World Congress on Industrial Process Tomography (2014)

X-ray tomography is used to investigate the influence of packing geometry and of liquid viscosity on hydrodynamic quantities, as well as on the liquid flow morphology inside a packed column successively ... [more ▼]

X-ray tomography is used to investigate the influence of packing geometry and of liquid viscosity on hydrodynamic quantities, as well as on the liquid flow morphology inside a packed column successively filled with two structured metallic packing, M752Y and M500X. As expected, liquid holdup and gas-liquid interfacial area increase with liquid flow rate and viscosity. In both packings, the film flow pattern predominates, while flooded regions remain minority. The influence of liquid flow rate and viscosity on flow morphology depends on the packing geometry. In M752Y, film and flooded region flows are clearly influenced, whereas in M500X, they are not. [less ▲]

Detailed reference viewed: 43 (5 ULg)
Peer Reviewed
See detailInvestigation of the influence of surface roughness modification of bone tissue engineering scaffolds
Kerckhofs, Greet ULg; Pyka, Grzegorz; Van Bael, Simon et al

in Abstract book SkyScan User Meeting 2010 (2010)

Detailed reference viewed: 5 (4 ULg)
Full Text
Peer Reviewed
See detailInvestigation of the inhibition mechanism of coumarins on chymotrypsin by mass spectrometry
Pochet, L.; Dieu, M.; Frederick, R. et al

in Tetrahedron (2003)

Detailed reference viewed: 19 (1 ULg)
Full Text
See detailInvestigation of the innate immunity in the lower respiratory tract in exercising horses
Frellstedt, Linda ULg; Gosset, Philippe; Desmet, Christophe ULg et al

in Proceedings of the 1st Scientific Meeting of the Faculty of Veterinary Medicine (2011)

Detailed reference viewed: 38 (8 ULg)
Full Text
Peer Reviewed
See detailInvestigation of the interaction between a β-cyclodextrin and DMPC liposomes: a small angle neutron scattering study
Joset, Arnaud ULg; Grammenos, Angeliki; Hoebeke, Maryse ULg et al

in Journal of Inclusion Phenomena and Macrocyclic Chemistry (2015), 83(3), 227-238

The Small Angle Neutron Scattering technique (SANS) has been applied to investigate the interaction between a cyclodextrin (CD) and liposomes. From the modelling of the experimental neutron scattering ... [more ▼]

The Small Angle Neutron Scattering technique (SANS) has been applied to investigate the interaction between a cyclodextrin (CD) and liposomes. From the modelling of the experimental neutron scattering cross sections, the detailed structure of dimyristoylphosphatidylcholine (DMPC) liposomes is assessed upon addition of increasing amounts of randomly methylated β-CD (RAMEB). This study has been performed at two temperatures bracketing the phase transition of the DMPC bilayers. The fraction of DMPC molecules incorporated into the vesicles is inferred. The dose-dependent phospholipidic extraction by RAMEB is quantified as well as the concomitant evolution of the liposome radius and of the thickness of the hydrophobic and hydrophilic parts of the membrane. The possible formation of CD-DMPC inclusion complexes is also assessed. The data suggest the dose-dependent coverage by RAMEB of the outer liposome interface. Our analysis highlights the important role of temperature on the mechanism of action of RAMEB. These results are discussed in the framework of the Area-Difference-Elasticity model. [less ▲]

Detailed reference viewed: 44 (15 ULg)
Full Text
Peer Reviewed
See detailInvestigation of the interactions of polyvinylpyrrolidone with mixtures of anionic and nonionic surfactants or anionic and zwitterionic surfactants by pulsed field gradient NMR
Misselyn-Bauduin, Anne-Marie; Thibaut, André ULg; Grandjean, Jean ULg et al

in Journal of Colloid & Interface Science (2001), 238(1), 1-7

The interaction of polyvinylpyrrolidone (PVP) with an anionic surfactant (sodium dodecyl sulfate, SDS), a nonionic surfactant (pentaethylene glycol monodecyl ether, C(10)E(5)), and a zwitterionic ... [more ▼]

The interaction of polyvinylpyrrolidone (PVP) with an anionic surfactant (sodium dodecyl sulfate, SDS), a nonionic surfactant (pentaethylene glycol monodecyl ether, C(10)E(5)), and a zwitterionic surfactant (lauryl amido propyl betaine, LAPB) has been investigated by means of pulsed gradient spin-echo NMR (FT-PGSE NMR), allowing self-diffusion coefficients to be determined. The results confirm the strong interaction prevailing in the PVP/SDS system, whereas no association has been observed in the PVP/C(10)E(5) and PVP/LAPB systems. Mixing PVP with two surfactants, namely SDS and C(10)E(5) or SDS and LAPB, results in the formation of ternary aggregates between the polymer and the mixed micelles. [less ▲]

Detailed reference viewed: 113 (5 ULg)
Full Text
Peer Reviewed
See detailAn investigation of the large-scale variability of the apparently single Wolf-Rayet star WR 1
Morel, Thierry ULg; Georgiev, L. N.; Grosdidier, Y. et al

in Astronomy and Astrophysics (1999), 349

In recent years, much studies have focused on determining the origin of the large-scale line-profile and/or photometric patterns of variability displayed by some apparently single Wolf-Rayet stars, with ... [more ▼]

In recent years, much studies have focused on determining the origin of the large-scale line-profile and/or photometric patterns of variability displayed by some apparently single Wolf-Rayet stars, with the existence of an unseen (collapsed?) companion or of spatially extended wind structures as potential candidates. We present observations of <ASTROBJ>WR 1</ASTROBJ> which highlight the unusual character of the variations in this object. Our narrowband photometric observations reveal a gradual increase of the stellar continuum flux amounting to Delta v ~ 0.09 mag followed by a decline on about the same timescale (3-4 days). Only marginal evidence for variability is found during the 11 following nights. Strong, daily line-profile variations are also observed but they cannot be easily linked to the photometric variations. Similarly to the continuum flux variations, coherent time-dependent changes are observed in 1996 in the centroid, equivalent width, and skewness of He Ii lambda 4686. Despite the generally coherent nature of the variations, we do not find evidence in our data for the periods claimed in previous studies. While the issue of a cyclical pattern of variability in <ASTROBJ>WR 1</ASTROBJ> is still controversial, it is clear that this object might constitute in the future a cornerstone for our understanding of the mechanisms leading to the formation of largely anisotropic outflows in Wolf-Rayet stars. [less ▲]

Detailed reference viewed: 13 (3 ULg)
Full Text
Peer Reviewed
See detailAn Investigation of the Late Excitatory Potentials in the Hand following Transcranial Magnetic Stimulation in Early Alzheimer's Disease.
Balla, christina; PEPIN, Jean-Louis ULg; MAERTENS DE NOORDHOUT, Alain ULg

in Dementia & Geriatric Cognitive Disorders (2014), 4

BACKGROUND: Recent neuroimaging studies in humans support the clinical observations that the motor cortex is affected early in the course of Alzheimer's disease (AD). PATIENTS AND METHODS: We measured the ... [more ▼]

BACKGROUND: Recent neuroimaging studies in humans support the clinical observations that the motor cortex is affected early in the course of Alzheimer's disease (AD). PATIENTS AND METHODS: We measured the silent period (SP) induced by transcranial magnetic stimulation in AD patients in the very early stage of the disease, and we explored whether and in which way the pharmacologic manipulation of the cholinergic system could modify it. RESULTS: An increase in the duration of the SP was observed in AD patients in the early stage in comparison to controls. After 2 months of treatment with donepezil, the duration did not differ significantly from that of normal subjects. The results of our study show a fragmentation and an enlargement of the SP in the presence of multiple late excitatory potentials (LEPs) in early untreated AD patients. These LEPs were also modulated by donepezil. CONCLUSIONS: The results suggest an early functional impairment of cholinergic neurotransmission in AD. The disturbance in acetylcholine output in early AD leads to a decrease in excitability of the motor system. [less ▲]

Detailed reference viewed: 35 (3 ULg)