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See detailThe impact of infliximab therapy on intestinal mucosal gene expression of endothelial cell adhesion molecules in patients with inflammatory bowel disease
Arijs, I.; Quintens, R.; Lemaire, K. et al

in Gastroenterology (2010), 138(5 Suppl I), -677

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See detailImpact of insecticides on wild fauna: a proposed toxicity index
Cooper, J.F.; Wynn, N.R.; Deuse, J.P.L. et al

in Mededelingen van de Faculteit Landbouwkundige en Toegepaste Biologische Wetenschappen (Rijksuniversiteit te Gent) (1997), 62(2B), 599-606

The risks to fauna associated with the use of pesticides are generally known for individual pesticides. There exists, however, a lack of pub Iished material providing comparative coverage of all ... [more ▼]

The risks to fauna associated with the use of pesticides are generally known for individual pesticides. There exists, however, a lack of pub Iished material providing comparative coverage of all pesticides, although some partial compilations have been published. ln an attempt to redress this situation, we propose here a Toxicity Index covering fish, birds and bees for 169 currently available insecticides. [less ▲]

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See detailImpact of intercropping aphid-resistant wheat cultivars with oilseed rape
Zhou, Haibo ULg

in Acta Ecologica Sinica (2009), 29

The effects of intercropping of wheat cultivars and oilseed rape on the densities of wheat aphid, Sitobion avenae, and their arthropod natural enemies were evaluated. Three winter wheat cultivars with ... [more ▼]

The effects of intercropping of wheat cultivars and oilseed rape on the densities of wheat aphid, Sitobion avenae, and their arthropod natural enemies were evaluated. Three winter wheat cultivars with different resistant levels to S. avenae were used: `KOK¿ (high resistance), `Xiaobaidongmai¿ (low resistance) and`Hongmanghong¿ (susceptible). The results showed that the densities of S. avenae were significantly higher on the monoculture pattern than on either the 8-2 intercropping pattern (eight rows of wheat with two rows of oilseed rape) or the 8-4 intercropping pattern (eight rows of wheat with four rows of oilseed rape). The mean number of predators and the mummy rates of S. avenae were significantly higher in two intercropping patterns than those in the monoculture pattern. The densities of S. avenae, ladybeetles, and mummy rate of S. avenae were significantly different among different wheat cultivars. The highest densities of S. avenae and ladybeetles were found on wheat cultivar Hongmanghong. The lowest densities of S. avenae associated with high mummy rate of S. avenae were found on wheat cultivar Xiaobaidongmai. The results showed that wheat-oilseed rape intercropping conserved more predators and parasitoids than in wheat monoculture fields, and partial resistance of wheat cultivar Xiaobaidongmai had complementary or even synergistic effects on parasitoid of S. avenae. [less ▲]

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See detailImpact of iron and steel industry and waste incinerators on human exposure to dioxins, PCBs, and heavy metals: results of a cross-sectional study in Belgium.
Fierens, Sebastien; Mairesse, Helene; Heilier, Jean-Francois et al

in Journal of Toxicology and Environmental Health. Part A (2007), 70(3-4), 222-6

We evaluated the impact of two iron and steel plants and two municipal solid waste incinerators (MSWI) in Wallonia (Belgium) on the exposure of residents to dioxins, polychlorinated biphenyls (PCBs), and ... [more ▼]

We evaluated the impact of two iron and steel plants and two municipal solid waste incinerators (MSWI) in Wallonia (Belgium) on the exposure of residents to dioxins, polychlorinated biphenyls (PCBs), and heavy metals. In total, 142 volunteers living around these facilities were recruited and compared with 63 referents from a rural area with no industrial source of pollution. Information about smoking habits, dietary habits, anthropometric characteristics, residential history, and health status was obtained from a self-administered questionnaire. The volunteers provided blood under fasting conditions in order to evaluate the body burden of dioxins (17 polychlorinated dibenzo-p-dioxins/dibenzofurans [PCDD/Fs] congeners) and PCBs. Samples of blood and urine were also taken for the determination of cadmium, mercury, and lead. After adjustment for covariates, concentrations of cadmium, mercury, and lead in urine or blood were not increased in subjects living in the vicinity of MSWIs or sinter plants by comparison with referents. Residents around the sinter plants and the MSWI located in the industrial area had concentrations of dioxins and PCBs in serum similar to that of referents. By contrast, subjects living in the vicinity of the MSWI in the rural area showed significantly higher serum levels of dioxins (geometric mean, 38 vs. 24 pg TEQ/g fat) and coplanar PCBs (geometric mean, 10.8 vs. 7.0 pg TEQ/g fat). Although age-adjusted dioxin levels in referents did not vary with local animal fat consumption, concentrations of dioxins in subjects living around the incinerators correlated positively with their intake of local animal fat, with almost a doubling in subjects with the highest fat intake. These results indicate that dioxins and coplanar PCBs emitted by MSWIs can indeed accumulate in the body of residents who regularly consume animal products of local origin. [less ▲]

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See detailImpact of joint space width measurement method on sample size calculation in knee osteoarthritis studies
Bruyère, Olivier ULg; Henrotin, Yves ULg; Honoré, Aline et al

in Clinical Rheumatology (2001), 5(Suppl.1), 413

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See detailImpact of laser-assisted hatching on pregnancy rate in fresh and frozen-thawed cycles
Thonon, Fabienne ULg; Gaspard, Olivier ULg; Jouan, Caroline ULg et al

in Human Reproduction (2006, June), 21(Suppl. 1), 124

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See detailThe impact of lateral carbon fluxes on the European carbon balance
Ciais, P.; Borges, Alberto ULg; Abril, Gwenaël et al

in Biogeosciences (2008), 5

To date, little is known about the impact of processes which cause lateral carbon fluxes over continents, and from continents to oceans on the CO2 – and carbon budgets at local, regional and continental ... [more ▼]

To date, little is known about the impact of processes which cause lateral carbon fluxes over continents, and from continents to oceans on the CO2 – and carbon budgets at local, regional and continental scales. Lateral carbon fluxes contribute to regional carbon budgets as follows: Ecosystem CO2 sink=Ecosystem carbon accumulation+Lateral carbon fluxes. We estimated the contribution of wood and food product trade, of emission and oxidation of reduced carbon species, and of river erosion and transport as lateral carbon fluxes to the carbon balance of Europe (EU-25). The analysis is completed by new estimates of the carbon fluxes of coastal seas. We estimated that lateral transport (all processes combined) is a flux of 165 Tg C yr−1 at the scale of EU-25. The magnitude of lateral transport is thus comparable to current estimates of carbon accumulation in European forests. The main process contributing to the total lateral flux out of Europe is the flux of reduced carbon compounds, corresponding to the sum of non-CO2 gaseous species (CH4, CO, hydrocarbons, . . . ) emitted by ecosystems and exported out of the European boundary layer by the large scale atmospheric circulation. [less ▲]

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See detailThe impact of lexical frequency on sentence comprehension in children with specific language impairment
Leclercq, Anne-Lise ULg; Majerus, Steve ULg; Jacob, Laura et al

in Research in Developmental Disabilities (2014), 35

Children with SLI generally exhibit poor sentence comprehension skills. We examined the specific impact of grammatical complexity and lexical frequency on comprehension performance, yielding contrasting ... [more ▼]

Children with SLI generally exhibit poor sentence comprehension skills. We examined the specific impact of grammatical complexity and lexical frequency on comprehension performance, yielding contrasting results. The present study sheds new light on sentence comprehension in children with SLI by investigating a linguistic factor which has attracted little research interest: the impact of the lexical frequency of known words on sentence comprehension. We also examined the impact of grammatical complexity and sentence length by independently varying these two factors. Fifteen children with SLI, 15 age- and IQ-matched controls, and 15 controls matched on lexical and grammatical skills, performed sentence comprehension tasks in which three linguistic factors were manipulated: lexical frequency (sentences containing words of either low or high lexical frequency), grammatical complexity (sentence containing either a subject relative clause or an object relative clause) and sentence length (either short or long sentences). Results indicated that children with SLI performed more poorly overall compared to age- and IQmatched children and to lexical and morphosyntactic age-matched children. However, their performance was not more affected by either sentence length or clause type than that of control children. Only lexical frequency affected sentence comprehension to a greater extent in children with SLI relative to the control groups, revealing that SLI children’s sentence comprehension abilities are particularly affected by the presence of lowfrequency but familiar words. [less ▲]

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See detailImpact of light and melanopsin on human cognitive brain function
Vandewalle, Gilles ULg

Conference (2015)

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See detailImpact of liming operating conditions on the convective drying kinetics of urban residual sludges
Royer, Sandrine; Blandin, Gaëtan; Salmon, Thierry ULg et al

Conference (2010, September)

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See detailImpact of liquid droplets on granular media
Delon, Giles ULg; Terwagne, Denis ULg; Dorbolo, Stéphane ULg et al

in Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics (2011)

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See detailImpact of liquidity constraint on the management of animal genetic resources by pastoralist herders.
Antoine-Moussiaux, Nicolas ULg

Conference (2011, April 27)

The improvement of pastoral livelihoods in the context of a highly uncertain economic and climatic future implies a double need for conserving livestock biodiversity and reaching productivity gains. In ... [more ▼]

The improvement of pastoral livelihoods in the context of a highly uncertain economic and climatic future implies a double need for conserving livestock biodiversity and reaching productivity gains. In situ conservation through participative genetic improvement programs is a tool of choice for these sustainable development pursuits. In this regard, selection criteria chosen by pastoralist breeders can be classified in two broad categories : productivity-seeking or risk-alleviating. The latter aim was an important motive for the constitution of the present indigenous breeds while the former is often a rationale for their neglect. Understanding the balance can help finding the way to sustainable biodiversity management. As the basis of pastoral livelihood systems, livestock shoulders many roles, among which that of savings may be considered central. Credit facilities lacking in these remote areas, breeders would thus sell part of their productive capital to invest in its improvement. The present model consists in a theoretical inquiry for the possible consequence of this polyvalence of livestock, productive capital and mobilizable saving, on the choice between the two above-mentioned breeding aims under liquidity constraint. A major outcome of the proposed model is the existence of a threshold herd size effect on investment in risk-control. This effect does not bear on investment in productivity and is no longer observed if credit constraint is relaxed. This threshold is thus proposed to entail the presence of an “erosion trap” for biodiversity and further recalls the difficulty to design a breeding program for a group of breeders with very diverse endowments. As a result, appropriate credit programs should be considered as an important key to adoption of breeding schemes for in situ conservation, and thus both their efficiency and viability. [less ▲]

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See detailImpact of low frequency transcranial magnetic stimulation on event-related brain potentials.
Hansenne, Michel ULg; Laloyaux, Olivier ULg; Mardaga, Solange et al

in Biological Psychology (2004), 67(3), 331-41

Contradictory findings exist concerning the inhibitory function of low frequency repetitive transcranial magnetic stimulation (rTMS). Therefore, the study examines the impact of different duration of low ... [more ▼]

Contradictory findings exist concerning the inhibitory function of low frequency repetitive transcranial magnetic stimulation (rTMS). Therefore, the study examines the impact of different duration of low frequency rTMS on ERPs. In 17 subjects, auditory ERPs were measured before and after 1 Hz rTMS delivered over the left prefrontal cortex during 10 min (600 pulses) and 15 min (900 pulses). Results showed that 15 min of 1 Hz rTMS induced a significant increase of P300 latency. There was no effect for early ERP components (N100, P200 and N200). This study confirms and extends that 1 Hz rTMS produces a real inhibitory effect only when the duration of the stimulation is about 15 min. The data suggest that rTMS modifies the speed of cognitive processing rather than the energetical aspect of information processing, and that cortical inhibition induced by the magnetic stimulation affects principally the controlled cognitive processes and not the automatic ones. [less ▲]

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See detailImpact of low-frequency transcranial magnetic stimulation on brain automatic information processing - A mismatch negativity study
Laloyaux, Olivier ULg; Ansseau, Marc ULg; Hansenne, Michel ULg

in Journal of Psychophysiology (2006), 20(4), 267-275

Repetitive transcranial magnetic stimulation (rTMS) is considered a powerful method for the study of the relationships between cortical activity and-cognitive processes. Previous ERPs studies' that ... [more ▼]

Repetitive transcranial magnetic stimulation (rTMS) is considered a powerful method for the study of the relationships between cortical activity and-cognitive processes. Previous ERPs studies' that focused on P300 response have shown that inhibitory/excitatory effects on prefrontal cortex (PFC), induced by low- and high-frequency rTMS, were able to modulate controlled but not automatic information processing. The present study assessed the impact of inhibition over left and right PFC induced by rTMS on mismatch negativity (MMN), which is known to represent automatic cerebral processes for detecting change. Auditory MMN was recorded in 20 subjects before and after application of left and right PFC 1-Hz rTMS for 15 min. MMN was also recorded before and after a sham-occipital 1-Hz rTMS as control condition. Results showed that 1-Hz rTMS induced no modification to either MMN latency or amplitude. In addition, N100 and P200 components to the frequent tones were not affected by rTMS. These results are consistent with previous findings showing that rTMS; over both PFC is unable to disrupt automatic information processing. However, since two sites were stimulated in the present-study, no definite conclusions about the inability of rTMS to disrupt automatic processing can be made. [less ▲]

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See detailImpact of M. fijiensis metabolites on banana antioxidant systems
Busogoro, J. P.; Lepoivre, Philippe ULg; Etame, J. J. et al

Conference (2004)

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See detailImpact of medical specialist' locus of control on communication skills in oncological interviews
Libert, Y.; Janne, P.; Razavi, D. et al

in British Journal of Cancer (2003), 88

Detailed reference viewed: 6 (0 ULg)