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See detailNew genetic sources of resistance in the genus Phaseolus to individual and combined aluminium toxicity and progressive soil drying stresses
Butare, Louis; Rao, I. M.; Lepoivre, Philippe ULg et al

in Euphytica : International Journal of Plant Breeding (2011), 181(3), 384-404

Bean species and genotypes show wide phenotypic variability in relation to aluminium (Al) resistance and progressive soil drying. The objective of this study was to identify and characterize sources of ... [more ▼]

Bean species and genotypes show wide phenotypic variability in relation to aluminium (Al) resistance and progressive soil drying. The objective of this study was to identify and characterize sources of resistance to Al toxicity and progressive soil drying among six genotypes of common bean (Phaseolus vulgaris), four of runner bean (P. coccineus), and one of tepary bean (P. acutifolius), using hydroponic and soil cylinder screening methods. One experiment on hydroponic screening of Al resistance was carried out using a basal nutrient solution with and without 20 lM Al. Two experiments were carried out using two oxisols in 80 cm long soil cylinders with high Al (HAl) and low Al (LAl) saturation treatments. The three experiments showed an average of 36.9–53.5% inhibition of root growth with HAl compared with LAl treatments. Differences in root development and distribution were observed among genotypes and species. Two accessions of P. coccineus (G35346-2Q, G35464-5Q) and one Andean common bean genotype (ICA Quimbaya) were outstanding in root and shoot growth in the HAl treatments. P. coccineus accession (G35346-3Q) was outstanding under combined stress of Al-toxic acid soil and progressive soil drying. Accessions of P. coccineus may represent unique sources of Al resistance for the improvement of common bean through interspecific crosses. [less ▲]

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See detailA new genus of rodent from wallacea (Rodentia: Muridae: Murinae: Rattini), and its implication for biogeography and Indo-Pacific Rattini systematics
Fabre, P.-H.; Pagès, Marie ULg; Musser, G. G. et al

in Zoological Journal of the Linnean Society (2013), 169(2), 408-447

We describe Halmaheramys bokimekot Fabre, Pagès, Musser, Fitriana, Semiadi & Helgen gen. et sp. nov., a new genus and species of murine rodent from the North Moluccas, and study its phylogenetic placement ... [more ▼]

We describe Halmaheramys bokimekot Fabre, Pagès, Musser, Fitriana, Semiadi & Helgen gen. et sp. nov., a new genus and species of murine rodent from the North Moluccas, and study its phylogenetic placement using both molecular and morphological data. We generated a densely sampled mitochondrial and nuclear DNA data set that included most genera of Indo-Pacific Murinae, and used probabilistic methodologies to infer their phylogenetic relationships. To reconstruct their biogeographical history, we first dated the topology and then used a Lagrange analysis to infer ancestral geographic areas. Finally, we combined the ancestral area reconstructions with temporal information to compare patterns of murine colonization among Indo-Pacific archipelagos. We provide a new and comprehensive molecular phylogenetic reconstruction for Indo-Pacific Murinae, with a focus on the Rattus division. Using previous results and those presented in this study, we define a new Indo-Pacific group within the Rattus division, composed of Bullimus, Bunomys, Paruromys, Halmaheramys, Sundamys, and Taeromys. Our phylogenetic reconstructions revealed a relatively recent diversification from the Middle Miocene to Plio-Pleistocene associated with several major dispersal events. We identified two independent Indo-Pacific dispersal events from both western and eastern Indo-Pacific archipelagos to the isolated island of Halmahera, which led to the speciations of H. bokimekot gen. et sp. nov. and Rattus morotaiensis Kellogg, 1945. We propose that a Middle Miocene collision between the Halmahera and Sangihe arcs may have been responsible for the arrival of the ancestor of Halmaheramys to eastern Wallacea. Halmaheramys bokimekot gen. et sp. nov. is described in detail, and its systematics and biogeography are documented and illustrated. © 2013 The Linnean Society of London, Zoological Journal of the Linnean Society. [less ▲]

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See detailNew geological map of Wallonia (south part of Belgium)... Now Online. Integration with other mapping projects of the Walloon Region Ministry
Barchy, Laurent; Marion, Jean-Marc ULg

Poster (2003, June)

Objectives: understanding of geological phenomena, development of new methodologies and techniques, to produce and disseminate pertinent, high-quality data and to provide for public authorities: - Surface ... [more ▼]

Objectives: understanding of geological phenomena, development of new methodologies and techniques, to produce and disseminate pertinent, high-quality data and to provide for public authorities: - Surface, subsurface and natural-ressource management - Preventing natural risks and pollution - Regional planning and developmentthe necessary tools [less ▲]

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See detailNew glucose-responsive polyelectrolyte microcapsules
Alaimo, David ULg; Detrembleur, Christophe ULg; Auzély-Velty, Rachel et al

Poster (2011, December 06)

Diabetes is a disorder of glucose regulation, characterized by an accumulation of glucose in the blood. The breakdown of glucose regulation can be attributed to the pancreas’s inability to secrete insulin ... [more ▼]

Diabetes is a disorder of glucose regulation, characterized by an accumulation of glucose in the blood. The breakdown of glucose regulation can be attributed to the pancreas’s inability to secrete insulin or to the body’s inability to properly use it. The usual treatment for type 1 diabetes consists in multiple subcutaneous insulin injections, daily administered using needles, insulin pen or insulin pump. However, this method doesn’t maintain normoglycemia and can lead to complications such as limb amputation, blindness, and kidney failure. To avoid such abnormal episodes, scientists imagined smart systems which are able to regulate the glucose level by themselves. During the past decades, a large variety of micro- and nanocarriers have been developed in order to improve efficiency, availability and toxicity profiles of drugs. In this field, stimuli-responsive polymer multilayers have attracted great scientific interest because of their potential applications as controlled delivery or release systems, for chemicals and drugs. A category of stimuli-responsive materials is able to sense glucose and respond to it by a modification of their porosity, leading to a release of insulin. The objective of this work was to investigate the formation of glucose responsive hollow microcapsules (5 microns) made of polyelectrolyte copolymers. These copolymers are composed of carbohydrate-sensitive functions, such as boronic acid and diols (PVOH), known for forming reversible covalent ether bond. In presence of carbohydrates such as glucose, the ether bonds will be reversibly broken and, consequently, the porosity of the glucose particles will change. Therefore, polyelectrolyte copolymers were synthesized by control radical polymerization, i.e. reversible addition-fragmentation chain transfer (RAFT, polyboronic acid) and cobalt-mediated radical polymerization (CMRP, PVOH). Using these polyelectrolytes as polyanions and poly(allylamine) (PAH) as a polycation, we undertook the formation of layer-by-layer capsules starting with a template of CaCO3microparticles which can be dissolved with EDTA leading to the formation of hollow microcapsules. Bovin serum albumin isothiocyanate (BSA-FITC) was used to fill the CaCO3microparticles and to determine the porosity of the resulting capsules in function of the glucose concentration. The sugar-dependent porosity is investigated by following the release of encapsulated BSA-FITC by spectro-fluoroscopy. [less ▲]

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See detailThe new gravitational lens candidate Q 1208+1011 and the importance of high quality data.
Magain, Pierre ULg; Surdej, Jean ULg; Vanderriest, C. et al

in The Messenger (1992), 67

Not Available

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See detailA new heuristic approach to deal with discrete variables in optimal power flow computations
Capitanescu, Florin ULg; Wehenkel, Louis ULg

in IEEE Power Tech conference (2009, July)

This paper proposes a new heuristic approach to deal with discrete variables in an optimal power flow (OPF). This approach relies on the first order sensitivity of the objective and inequality constraints ... [more ▼]

This paper proposes a new heuristic approach to deal with discrete variables in an optimal power flow (OPF). This approach relies on the first order sensitivity of the objective and inequality constraints with respect to the discrete variables. The impact of a discrete variable change on the objective and inequality constraints is aggregated into a merit function. The proposed approach searches iteratively for better discrete variable settings as long as the problem solution can be improved. We provide numerical results with the proposed approach on four test systems up to 1203 buses and for the OPF problem of active power loss minimization. [less ▲]

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See detailA new hierarchical approach for dynamic state prediction and filtering in electric power systems
Mallieu, Didier; Rousseaux, Patricia ULg; Van Cutsem, Thierry ULg et al

in Proceedings of the IFAC Symposium on Power Systems and Power Plant Control (1986)

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See detailNew high resolution pollen record from Hautes-Fagnes.
Danu, Mihaela; Streel, Maurice; Allan, Mohammed ULg et al

in Analele Stiintifice ale Universitatii "Alexandru Ioan Cuza". Sectiunea Sociologie si Asistenta Sociala = Scientific Annals of the “Alexandru Ioan Cuza” University. Sociology and Social Work Section (2013), 59(1), 15-25

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See detailA new high-order high-frequency integral equation method for the solution of scattering problems. I. Single scattering configurations
Bruno, O.; Geuzaine, Christophe ULg; Reitich, F.

in Proceedings of the 20th Annual Review of Progress in Applied Computational Electromagnetics, ACES 2004 (2004)

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See detailA new high-order high-frequency integral equation method for the solution of scattering problems. II. Multiple scattering configurations
Bruno, O.; Geuzaine, Christophe ULg; Reitich, F.

in Proceedings of the 20th Annual Review of Progress in Applied Computational Electromagnetics, ACES 2004 (2004)

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See detailNew high-resolution pollen record from Hautes-Fagnes Belgium
Danu, M; Streel, Maurice ULg; Allan, M et al

in Scientific Annals of the “Alexandru Ioan Cuza” University. (New series) Section 2 Vegetal Biology (2013), 59(1), 15-25

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See detailNew Histochemical and Ultrastructural Observations on Normal Bovine Tonsils
Velinova, Maria; Thielen, Caroline ULg; Mélot, France ULg et al

in Veterinary Record : Journal of the British Veterinary Association (2001), 149(20), 613-7

Samples of normal bovine palatine tonsils were examined by light and electron microscopy. Like human tonsils, they were composed of crypts, subepithelial areas, follicles, and T-dependent zones, but their ... [more ▼]

Samples of normal bovine palatine tonsils were examined by light and electron microscopy. Like human tonsils, they were composed of crypts, subepithelial areas, follicles, and T-dependent zones, but their well-developed capsule subdivided the lymphoid tissue by connective septa. B cells formed the major lymphoid component. The follicles and T-dependent zones had morphological and histochemical features typical of peripheral lymph organs. Follicular dendritic cells were isolated and shown to be similar to human follicular dendritic cells. [less ▲]

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See detailNew hope for CSWS/ESES treatment: Topiramate?
Symann, S.; Rucquoy, M.; Misson, Jean-Paul ULg et al

in European Journal of Paediatric Neurology : Official Journal of the European Paediatric Neurology Society (1999)

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See detailNew host and geographical distribution for the pearlfish Carapus mourlani (Pisces, Carapidae) with a discussion on Carapini nomenclature and biogeography
Parmentier, Eric ULg; Mercier, Annie; Hamel, Jean-François

in Copeia (2006), 2006

Specimens of the pearlfish Carapus mourlani (Carapidae) were observed for the first time in association with the sea cucumber Isostichopus fuscus (Holothuroidea: Echinodermata) along the coast of Ecuador ... [more ▼]

Specimens of the pearlfish Carapus mourlani (Carapidae) were observed for the first time in association with the sea cucumber Isostichopus fuscus (Holothuroidea: Echinodermata) along the coast of Ecuador. Out of 4345 sea cucumbers collected from various depths between 5 and 60 m, 12 harbored a pearlfish either in the coelomic cavity, the respiratory tree, or the digestive tract, yielding a prevalence of ca. 0.0028. The presence of C. mourlani appeared to be detrimental to the holothurian host in some cases. Side effects resulting from coelomic cavity infections included less advanced gonad maturity (reduced gonadal tubule diameter and length, lower ratio of mature oocytes) and a significant proportion of necrotic and shriveled gonadal tubules, devoid of gametes. Aside from discussing this evidence, the present paper briefly describes the biology of the pearlfish, its relationship with the host, and its daily activity cycle. [less ▲]

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See detailA new HPLC method for the assay of alkaloids in Strychnos nux-vomica and Strychnos ignatii
Gadi Biala, Rose; Tits, Monique ULg; Wauters, Jean-Noël ULg et al

in Fitoterapia (1996), 67(2), 163-165

A reversed-phase high performance liquid chromatographic procedure was developed for the qualitative and quantitative analysis of the alkaloids in S. nux-vomica and S. ignatii.

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See detailA new HPLC method to quantify alliin, the major sulfur compound in garlic
DETHIER, Bérénice ULg; Laloux, Morgan ULg; Hanon, Emilien et al

Poster (2012, February 10)

Garlic is recognized for centuries for its health benefits, mostly linked to its sulfur- components. Among the products extracted from the cloves, alliin retained our attention. Alliin was synthesized ... [more ▼]

Garlic is recognized for centuries for its health benefits, mostly linked to its sulfur- components. Among the products extracted from the cloves, alliin retained our attention. Alliin was synthesized. This process leads to two stereoisomers. Their HPLC separation was the aim of this work. The method described in the literature (amino column, detection at 210 nm) showed a resolution of 1,1 between the isomers. A second method was developed: the stationary phase was porous graphitic carbon and a water-ACN gradient was used for the elution. It provided a resolution of 3,2, was shorter and underwent the validation process. The method leads to satisfying results. The separation is excellent, and the validation criteria are fulfilled. This may be valuable for future research on garlic. [less ▲]

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