References of "1996"
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See detailProtection du citoyen et expérimentation médicale
Palermini, Patricia ULg

Report (1996)

Detailed reference viewed: 32 (7 ULg)
See detailResponses of six coniferous forest soils to increased (NH4)2SO4 inputs
Carnol, Monique ULg; Ineson, Phil

Conference (1996, September)

Defining Critical N Loads for forests remains a major challenge, as our understanding of processes determining forest ecosystem responses to increased N deposition is still poor. Acidification will mainly ... [more ▼]

Defining Critical N Loads for forests remains a major challenge, as our understanding of processes determining forest ecosystem responses to increased N deposition is still poor. Acidification will mainly depend on the nitrification capacity, and coupled nitrate leaching, of the forest soil; yet factors controlling nitrification are not clearly established. As part of the CORE project (CEC), investigating nutrient dynamics in European coniferous forest soils, we studied the effects of increased (NH4)2SO4 deposition on soil solution chemistry at six sites situated across a climatic and pollution gradient. Roofed tension lysimeters were treated every two weeks with 2.88 kg N ha-1 (75 kg N ha-1 a-1) above ambient throughfall and monitored at the same interval for a total of 18 months. Responses to increased (NH4)2SO4 inputs varied from high ammonium retention, to highly increased ammonium leaching at the different sites. The important links between N cycle transformations and cation leaching were confirmed. The response of the nitrifiers to increased external ammonium supply was slow at all sites. The different responses of these six soils to increased (NH4)2SO4 deposition emphasizes that the effects of N loads have to be discussed in relation to soil N storage and nitrification capacity. [less ▲]

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See detailFeeding of Sarpa salpa in a Posidonia seagrass ecosystem: del 13C evidence for a mixed diet
Havelange, Stéphane; Lepoint, Gilles ULg; Dauby, Patrick ULg et al

Conference (1996, September)

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See detailAerosol therapy in the equine species
Votion, Dominique ULg; Duvivier, Hannia; Lekeux, Pierre ULg

in In Proceedings: Journées Vétérinaires Suisses (1996, September)

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See detailModel-Based Ladar ATR Using Functional Templates
Verly, Jacques ULg

Conference (1996, September)

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See detailDynamic loads caused by lightning stroke in a conductor angle arrangement.
Lilien, Jean-Louis ULg; hansenne, eric; Kokkinos, D. et al

in Proceedings of teh 23rd ICLP (1996, September)

Lightning stroke going through condutor angle may cause dramatic failure of the conductors if mechanical loads are not taken into account in the design.The paper evaluate such effects by simulation and ... [more ▼]

Lightning stroke going through condutor angle may cause dramatic failure of the conductors if mechanical loads are not taken into account in the design.The paper evaluate such effects by simulation and make some proposal to reduce the maximum stress. [less ▲]

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See detailAn analytical-numerical method based on static equivalent load for the evaluation of maximum dynamic stresses in HV Substation.
Miri; Kuhner, A.; Lilien, Jean-Louis ULg et al

in Proceedings of the 7th ESCC (1996, September)

Short-circuit mechnaical effects in substations may be analysed by numerical methods. It helps to better define equivalent static loads qhich may be used for design of supporting structures during such ... [more ▼]

Short-circuit mechnaical effects in substations may be analysed by numerical methods. It helps to better define equivalent static loads qhich may be used for design of supporting structures during such dynamic loading. [less ▲]

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See detailLe rire d'Alphonse Allais
Defays, Jean-Marc ULg; Dufays, Jean-Louis; Schoentjes, Pierre

Diverse speeche and writing (1996)

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See detailShort-circuit electrodynamic effects on multiconductors bundled.
Lamchich, Moulay; Lilien, Jean-Louis ULg; el Adnani, Mustapha

in Proceedings of the 7th ESCC (1996, September)

Budle conductor during short-circuit behaves with a clash inducing large loads on structures, so called "pinch effect". This paper looks after simulations, tests and simple method to better understand the ... [more ▼]

Budle conductor during short-circuit behaves with a clash inducing large loads on structures, so called "pinch effect". This paper looks after simulations, tests and simple method to better understand the physics behind the general behaviour of bundle conductors. [less ▲]

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See detailDobutamine cardiac stress testing in conscious healthy dogs
Mc Entee, Kathleen ULg; Amory, Hélène ULg; Pypendop, B. et al

in 6th ESVIM Meeting - Velhoven - Septembre 1996 (1996, September)

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See detailThe CD-Rom's in the Medical Library : an 8 year Follow-up Evaluation.
Pasleau, Françoise ULg; Quinaux, N.; Severyns, A.-M. et al

Poster (1996, September)

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See detailLaboratory and in situ grazing rates of freshwater rotifers and their contribution to community grazing rates
Gosselain, V.; Joaquim-Justo, Célia ULg; Viroux, L. et al

in Archiv für Hydrobiologie. Supplementband, Large rivers (1996), 13(1-4), 353-361

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See detailCARAIB: A GLOBAL MECHANISTIC VEGETATION MODEL TO STUDY THE CO2 EXCHANGE BETWEEN THE ATMOSPHERE AND THE CONTINENTAL BIOSPHERE
Gérard, Jean-Claude ULg; François, Louis ULg; Nemry, Beranrd et al

Conference (1996, September)

The TM2 atmospheric transport model, a parameterization of soil heterotrophic respiration and a mechanistic model of carbon assimilation in the biosphere (CARAIB) are combined to estimate the net primary ... [more ▼]

The TM2 atmospheric transport model, a parameterization of soil heterotrophic respiration and a mechanistic model of carbon assimilation in the biosphere (CARAIB) are combined to estimate the net primary productivity of the continental vegetation. The model includes the determination of the leaf area index (LAI) of the various vegetation covers, the CO2 assimilation by the leaves, and the respiration of standing biomass. It also includes a soil hydrological model forced with monthly mean air temperature, precipitation and solar radiation fields and using a stochastic generation of daily weather within each month. It is shown that the seasonal fluctuations observed at various monitoring stations can be well reproduced, thus validating the mechanistic approach adopted to calculate the global net primary productivity. A Fourier analysis of the modelled atmospheric signal is performed to quantify the relative importance of the vegetation in the different latitude zones and the contribution of the various vegetation types. In the southern hemisphere, the calculated phase and amplitude of the CO2 signal are not so well reproduced since atmosphere-ocean exchanges should also be considered in addition to the biospheric source. The latest updates and simulations performed with the model will be presented and discussed. [less ▲]

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See detailAcute Diverticulitis in Heart Transplant Recipients
Detry, Olivier ULg; Defraigne, Jean-Olivier ULg; Meurisse, Michel ULg et al

in Transplant International (1996), 9(4), 376-9

Immunosuppressed patients are susceptible to complicated diverticulitis, but reports of this complication are scarce in heart graft recipients. To estimate the prevalence of acute diverticulitis in heart ... [more ▼]

Immunosuppressed patients are susceptible to complicated diverticulitis, but reports of this complication are scarce in heart graft recipients. To estimate the prevalence of acute diverticulitis in heart graft recipients, we retrospectively reviewed the cases of diverticulitis in a series of 143 patients who underwent orthotopic heart transplantation in a period of 10 years. Six (4%) of these developed acute diverticulitis and required colectomy. All of them were male patients and were older than 50 years. Four patients underwent urgent laparotomy and colon resection with end colostomy (Hartmann procedure). The two other patients suffered from diverticulitis without generalized peritonitis and underwent laparoscopic sigmoidectomy with direct transanal end-to-end anastomosis. The postoperative outcomes of these six patients were satisfactory. As are other immunosuppressed patients, heart graft recipients are susceptible to diverticulitis. Early surgical management may be safe in well-compensated patients. [less ▲]

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See detailInflammatory reaction and capillary leak syndrome related to cardiopulmonary bypass in neonates undergoing cardiac operations
Seghaye, Marie-Christine ULg; Grabitz, R. G.; Duchateau, J. et al

in Journal of Thoracic and Cardiovascular Surgery (1996), 112(3), 687-697

We studied the inflammatory reaction related to cardiopulmonary bypass in 24 neonates (median age 6 days) undergoing the arterial switch operation for simple transposition of the great arteries, with ... [more ▼]

We studied the inflammatory reaction related to cardiopulmonary bypass in 24 neonates (median age 6 days) undergoing the arterial switch operation for simple transposition of the great arteries, with respect to the development of postoperative capillary leak syndrome. Complement proteins, leukocyte count, tumor necrosis factor-α, and histamine levels were determined before, during, and after cardiopulmonary bypass. Additionally, protein movement from the intravascular into the extravascular space during cardiopulmonary bypass was assessed by the measurement of plasma concentrations of proteins with molecular weights ranging from 21,200 to 718,000. Capillary leak syndrome developed in 13 of the 24 neonates. Patients with capillary leak syndrome, as compared with those without, had preoperatively higher C5a levels (C5a, 3.0 ± 0.6 μg/L vs 0.9 ± 0.2 μg/L) (mean ± standard error of the mean) (p < 0.05) and higher leukocyte counts (leukocytes, 17.9 ± 2.1 x 10 3 cells/ml versus 11.7 ± 0.8 x 10 3 cells/ml) (p < 0.05), suggesting in these neonates a preoperative inflammatory state. Preoperative clinical and operative data were identical in both patient groups. Before cardiopulmonary bypass, serum protein concentrations were similar in all patients. Ten minutes after institution of cardiopulmonary bypass, protein concentrations fell to significantly lower values in patients with capillary leak syndrome than in those without: albumin (19% ± 1.5% vs 30% ± 6% of the prebypass value, p < 0.05), immunoglobulin G (17% ± 1.5% vs 29% ± 5.5%, p < 0.001), and α 2-macroglobulin (15% ± 1.2% vs 25% ± 4%, p < 0.02). During cardiopulmonary bypass, albumin concentrations remained significantly lower in patients with capillary leak syndrome than in those without, whereas hematocrit values were similar in both groups. During cardiopulmonary bypass, patients with capillary leak syndrome also had lower concentrations of complement proteins C3 and C4 but not C1 inhibitor. C3d/C3 ratio and C5a levels were similar in both patient groups. In contrast, histamine liberation during cardiopulmonary bypass was significantly more pronounced in patients with capillary leak syndrome than in those without (725.2 ± 396.7 pg/ml vs -54.1 ± 58.4 pg/ml, p < 0.05). Tumor necrosis factor-α levels after protamine administration were also significantly higher in patients with capillary leak syndrome (38.1 ± 10.0 pg/ml vs 15.3 ± 3.4 pg/ml, p < 0.05). Leukocyte count during and after cardiopulmonary bypass was similar in both patient groups. This study demonstrates increased protein leakage as early as 10 minutes after initiation of cardiopulmonary bypass in patients having clinical signs of postoperative capillary leak syndrome. Patients with capillary leak syndrome displayed more pronounced histamine liberation and tumor necrosis factor-α liberation than patients without capillary leak syndrome, suggesting a relationship between cardiopulmonary bypass-related inflammatory reaction and perioperative capillary damage. A preoperative inflammatory state in patients with capillary leak syndrome could have enhanced the inflammatory response to cardiopulmonary bypass. [less ▲]

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See detailThrombolyse coronaire--actualisation
Legrand, Victor ULg

in Revue Médicale de Liège (1996), 51(9), 571-5

Detailed reference viewed: 6 (0 ULg)