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See detailHydrolytic and thermal degradation of random copolyesters of epsilon-caprolactone and 2-oxepane-1,5-dione
Dwan'Isa Latere, Jean-Pierre; Lecomte, Philippe ULg; Dubois, Philippe ULg et al

in Macromolecular Chemistry and Physics (2003), 204(9), 1191-1201

The hydrolytic and thermal stability of random copolyesters of epsilon-caprolactone (epsilon-CL) and ca. 30 mol-% 2-oxepane-1,5-dione (OPD) have been investigated. Compared with poly(epsilon-caprolactone ... [more ▼]

The hydrolytic and thermal stability of random copolyesters of epsilon-caprolactone (epsilon-CL) and ca. 30 mol-% 2-oxepane-1,5-dione (OPD) have been investigated. Compared with poly(epsilon-caprolactone) (PCL) of a comparable molecular weight, the hydrolytic degradation of the copolyester is faster in a phosphate buffer (pH = 7.4) at 37°C as confirmed by the time dependence of water absorption, weight loss, melting temperature, and molecular weight. This difference is a result of the higher hydrophilicity imparted to the copolyester by the ketone of the OPD units. The thermal degradation has been studied by thermogravimetric analysis (TGA), (HNMR)-H-1 spectroscopy, and size exclusion chromatography (SEC). The activation energy of the thermal degradation under nitrogen has been found to be lower for the copolyesters than for PCL, which indicates that the OPD co-units have a deleterious effect on the thermal stability of PCL. The thermal degradation primarily occurs by pyrolysis of the ester functions. [less ▲]

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See detailHydrolyzed protein in preterm
SENTERRE, Thibault ULg; Rigo, Jacques

in Bhatia, Jatinder; Shamir, Raanan; Vandenplas, Yvan (Eds.) Protein in neonatal and infant nutrition: recent updates (2016)

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See detailHydromechanical analysis of fracturing in clayey rocks : modelling of disturbed argillite and ventilation test
Pardoen, Benoît ULg; Collin, Frédéric ULg

Scientific conference (2012, February 15)

The present advances in hydro-mechanical analysis of a clayey rock fracturing are presented at a department seminar. The damaged zone existing around galleries composing underground structures is studied ... [more ▼]

The present advances in hydro-mechanical analysis of a clayey rock fracturing are presented at a department seminar. The damaged zone existing around galleries composing underground structures is studied through two aspects: rock-atmosphere interaction at gallery wall and rock fracturing modelling. These two aspects are discussed through the numerical results of an in situ ventilation test modelling and a biaxial compression test modelling. [less ▲]

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See detailHydromechanical behaviour of bentonite under in situ conditions
Dieudonné, Anne-Catherine ULg; Talandier, Jean; Collin, Frédéric ULg et al

Conference (2015)

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See detailHydromechanical Coupling and Basin Tectonic Compression
Radu, Jean-Pol ULg; Barnichon, J. D.; Charlier, Robert ULg

in Proc. Biot. Conf. on Poromechanics (1998, September)

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See detailHydromechanical coupling and strain localisation
Charlier, Robert ULg; Radu, Jean-Pol ULg

in Proc. of the NAFEMS World Congress (1997, April)

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See detailHydromechanical coupling theory in unsaturated geomaterials and its numerical integration
Charlier, Robert ULg; Radu, Jean-Pol ULg; Gerard, Pierre ULg et al

in Laloui, Lyesse (Ed.) Mechanics of Unsaturated Geomaterials (2013)

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See detailHydromechanical modelling of shaft sealing for CO2 storage
Dieudonné, Anne-Catherine ULg; Cerfontaine, Benjamin ULg; Collin, Frédéric ULg et al

in Engineering Geology (2015), 193

The geological sequestration of CO2 in abandoned coal mines is a promising option to mitigate climate changes while providing sustainable use of the underground cavities. In order to certify the ... [more ▼]

The geological sequestration of CO2 in abandoned coal mines is a promising option to mitigate climate changes while providing sustainable use of the underground cavities. In order to certify the efficiency of the storage, it is essential to understand the behaviour of the shaft sealing system. The paper presents a numerical analysis of CO2 transfer mechanisms through a mine shaft and its sealing system. Different mechanisms for CO2 leakage are considered, namely multiphase flow through the different materials and flow along the interfaces between the lining and the host rock. The study focuses on the abandoned coal mine of Anderlues, Belgium, which was used for seasonal storage of natural gas. A two-dimensional hydromechanical modelling of the storage site is performed and CO2 injection into the coal mine is simulated. Model predictions for a period of 500 years are presented and discussed with attention. The role and influence of the interface between the host rock and the concrete lining are examined. In addition the impact of some uncertain model parameters on the overall performance of the sealing system is analysed through a sensitivity analysis. [less ▲]

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See detailHydrometallurgy of precious metals - effects on the environment
Gaydardzhiev, Stoyan ULg

in Gallios and Matis (Ed.) Proceedings of a NATO-ASI, NATO-ASI Series 2, v. 43 (1998)

Factors which affect the release of toxic substabces to the environment during the hydrometallurgical processing of precious metals bearing ores are discussed. The environmental notions of the cyanidation ... [more ▼]

Factors which affect the release of toxic substabces to the environment during the hydrometallurgical processing of precious metals bearing ores are discussed. The environmental notions of the cyanidation process are presented together with a review about the work in the field of alternative gold lixiviants. [less ▲]

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See detailHydromorphological restoration of Alpine rivers
Rulot, François ULg; Dewals, Benjamin ULg; Erpicum, Sébastien ULg et al

Conference (2011, November)

More and more efforts are undertaken to restore rivers in a state close to their natural conditions in order to meet the Water Framework Directive requirement. This directive commits EU member states to ... [more ▼]

More and more efforts are undertaken to restore rivers in a state close to their natural conditions in order to meet the Water Framework Directive requirement. This directive commits EU member states to achieve a good ecological status of all their water bodies. It became thus very important to develop river restoration such as fish passages, bank renaturation, natural bars or meanders. Another important component of river restoration schemes is the decommissioning of man-made structures. These interventions can have significant impact on the river hydrology, hydraulics and morphology, such as bed degradation or aggradation, bank failures. Predicting these impacts of restoration schemes on the river, especially for large scale projects, should rely on detailed numerical studies. To achieve this goal, we develop a methodology to analyse different scenarios of river restoration based on several criteria related to flow, sediment transport and environment. This method is applied to the case of a French alpine river in which five hydropower plants will be replaced by a unique underground hydropower plant on the same section of river. [less ▲]

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See detailHydronéphrose produite par un anévrysme géant de l'artère rénale. Traitement par autotransplantation
Creemers, Etienne ULg; VAN DAMME, Hendrik ULg; Dusart, Y. et al

in Journal d'Urologie (1990), 96(1), 40-4

The authors report a case of hydronephrosis secondary to a giant aneurysm of the left renal artery, displacing the pyeloureteral junction. Decompression was obtained via "ex situ" reconstructive arterial ... [more ▼]

The authors report a case of hydronephrosis secondary to a giant aneurysm of the left renal artery, displacing the pyeloureteral junction. Decompression was obtained via "ex situ" reconstructive arterial surgery, followed by renal autotransplantation without division of the ureter. [less ▲]

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See detailHydronyme et géosymbole : Salm-en-Ardenne. Quand un nom de rivière fait couler beaucoup d'encre
Schmitz, Serge ULg

in Guillaud, Dominique; Seysset, Marie; Walter, Annie (Eds.) Le voyage inachevé... à Joël Bonnemaison (1998)

Cultural space is full significance and attachments. To illustrate the importance of place or river names for people, this paper analyses a petty local quarrel about the name of a river, the Salm or Glain ... [more ▼]

Cultural space is full significance and attachments. To illustrate the importance of place or river names for people, this paper analyses a petty local quarrel about the name of a river, the Salm or Glain, in the Belgian Ardenne and asks the question: wich has more meaning for the people, the place name at the place itself ? [less ▲]

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See detailThe hydrophobic effect in protein folding.
Lins, Laurence ULg; Brasseur, Robert ULg

in FASEB Journal (1995), 9(7), 535-40

In this review of protein folding we consider the noncovalent interactions existing between atoms or molecules at the molecular level. The electrostatic, Van der Waals, hydrogen bonding, and hydrophobic ... [more ▼]

In this review of protein folding we consider the noncovalent interactions existing between atoms or molecules at the molecular level. The electrostatic, Van der Waals, hydrogen bonding, and hydrophobic interactions are described and their contribution to protein conformation is discussed. The growing interest in the hydrophobic effect arises from its importance in the protein folding process, and a semiempirical simulation of the free energy of solvation is proposed. In most proteins, the different forces we describe contribute to the stability of the protein conformation in a complex way. However, in the case of the apolipoproteins and cytochrome C551, the energetic contributions are easily distinguished. For this reason, these proteins are used to illustrate the importance of the different energy fields. [less ▲]

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See detailHydrophobic reverse derivitization for secondary ion mass spectrometry/fast atom bombardment
De Pauw, Edwin ULg; Pelzer, Gaston; Marien, José ULg

in Organic Mass Spectrometry (1985), 20(11), 692-693

New method to increase the signal in soft ionization methods

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See detailHydrophobic Substitutions In The First Residue Of The Crac Segment Of The Gp41 Protein Of Hiv
Vishwanathan, Sa.; Thomas, Annick ULg; Brasseur, Robert ULg et al

in Biochemistry (2008), 47(1), 124-30

We investigated the peptides N-acetyl-AWYIK-amide and N-acetyl-VWYIK-amide corresponding to single amino acid substitutions in LWYIK, a segment found in the gp41 protein of HIV and believed to play a role ... [more ▼]

We investigated the peptides N-acetyl-AWYIK-amide and N-acetyl-VWYIK-amide corresponding to single amino acid substitutions in LWYIK, a segment found in the gp41 protein of HIV and believed to play a role in sequestering this protein to a cholesterol-rich domain in the membrane. The effects of these peptides on the thermotropic phase transitions of 1-stearoyl-2-oleoylphosphatidylcholine (SOPC) and mixtures of SOPC and cholesterol were intermediate between that having the wild-type sequence (LWYIK) and another (IWYIK), the least active peptide previously studied. This correlated with results from studies of single mutations in the gp41 protein of HIV-1, in which L679 of the LWYIK segment is replaced with either A or V, measuring the capability of TZM-BL HeLa-based HIV-1 indicator cells to form syncytia. The peptides were also comparatively analyzed in silico. All together, the results suggest that the mode of interaction of this region of gp41 with the polar heads of membrane lipids contributes to its cholesterol selectivity and that this is somehow related to the biological activity of the viral glycoprotein. [less ▲]

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See detailHydrophobic substrate utilization by the yeast Yarrowia lipolytica, and its potential applications
Fickers, Patrick ULg; Benetti, Ph; Waché, Y et al

in FEMS Yeast Research (2005), (5), 527-543

Detailed reference viewed: 20 (0 ULg)