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See detailSelf-formation of hierarchical micro-meso-macroporous structures: Generation of the new concept "Hierarchical Catalysis"
Vantomme, A.; Léonard, Alexandre ULg; Yuan, Z.-Y. et al

in Colloids and Surfaces A : Physicochemical and Engineering Aspects (2007), 300(1-2 SPEC. ISS.), 70-78

The self-formation phenomenon of hierarchy with multiple-scaled porosity is reported. The structures of various chemical compositions, such as ZrO2, TiO2, Al2O3, Y2O3, Nb2O5, Ta2O5 ZrO2-SiO2, ZrO2-TiO2 ... [more ▼]

The self-formation phenomenon of hierarchy with multiple-scaled porosity is reported. The structures of various chemical compositions, such as ZrO2, TiO2, Al2O3, Y2O3, Nb2O5, Ta2O5 ZrO2-SiO2, ZrO2-TiO2, ZrO2-Y2O3, aluminosilicates, aluminophosphates, silicoaluminophosphates, metallophosphates, are made of macrochannels (0.5-5 μm in diameter) with mesoporous or microporous walls. The hierarchically porous structures are prepared by just controlling the hydrolysis and polycondensation rates of the pre-selected inorganic sources. The textural, structural as well as morphological properties of each material are carefully studied by using a large series of techniques, such as XRD, NMR, TEM, SEM, N2 adsorption-desorption, Hg porosimetry, optical microscopy. On the basis of these multimodal porous structures, a new concept "Hierarchical Catalysis" has been proposed. This new concept can allow the realisation of a multiple steps reaction in one single catalyst in a cascade way without any separation processes. © 2007 Elsevier B.V. All rights reserved. [less ▲]

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See detailDevelopment of a RAPD marker and a semi-selective medium for aureobasidium pullulans (strain Ach1-1), a biocontrol agent against postharvest disease on apples
El Hamouchi, A.; Najimi, B.; Achbani, E. H. et al

in Bulletin OILB/SROP = IOBC/WPRS Bulletin (2007), 30

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See detailNatural antibody--complement dependent neutralization of bovine herpesvirus 4 by human serum
Machiels, Bénédicte ULg; Gillet, Laurent ULg; Brito, Sieberth Do Nascimento et al

in Microbes & Infection (2007), 9(14-15), 1530-1537

In contrast to most gammaherpesviruses, Bovine herpesvirus 4 (BoHV-4) has a broad range of host species both in vitro and in vivo. Several in vitro studies demonstrated that some human cell lines are ... [more ▼]

In contrast to most gammaherpesviruses, Bovine herpesvirus 4 (BoHV-4) has a broad range of host species both in vitro and in vivo. Several in vitro studies demonstrated that some human cell lines are sensitive or even permissive to BoHV-4. These observations led to the hypothesis that cross-species transmission of BoHV-4 could lead to human infections. In the present study, we investigate the sensitivity of BoHV-4 to neutralization by naïve human sera in order to determine if humans exhibit innate anti-viral activities against this virus. Our results demonstrate that human sera from naïve individuals, in contrast to the sera of naïve subjects from various animal species, neutralize BoHV-4 efficiently. A series of complementary experiments were performed to unravel the mechanism(s) of this neutralization. The data obtained in this study demonstrates that human serum neutralizes BoHV-4 in a complement dependent manner activated by natural antibodies raised against the Galalpha1-3Galbeta1-4GlcNAc-R epitope expressed by bovine cells [less ▲]

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See detailIsolation and evaluation of bacteria and fungi as biological control agents against Rhizoctonia solani.
Lahlali, R.; Bajii, M.; Jijakli, Mohamed ULg

in Communications in agricultural and applied biological sciences (2007), 72(4), 973-982

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See detail"Je suis de ceux qui…"
Durand, Pascal ULg

in Durand, Pascal (Ed.) Les Nouveaux Mots du Pouvoir. Abécédaire critique (2007)

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See detailThe Pregnancy-Associated Glycoproteins: Biochemical Aspects and Clinical Application for Pregnancy Follow-up
Melo de Sousa, Noelita ULg; Barbato, O.; Bella, Amina ULg et al

Conference (2007)

Pregnancy diagnosis is an important part in reproduction management of ruminants. In the last years, a large polymorphic family of placenta-expressed proteins has been discovered in ruminant species and ... [more ▼]

Pregnancy diagnosis is an important part in reproduction management of ruminants. In the last years, a large polymorphic family of placenta-expressed proteins has been discovered in ruminant species and used for pregnancy diagnosis. Members of this family are named pregnancy-associated glycoproteins (PAG), being synthesized in the mono- and binucleate cells of the ruminant’s trophectoderm. Part of them are released in the maternal blood circulation where they can be assayed by different laboratory techniques. Due to large variety of expressed molecules and to large variations in the post-translational processing of the PAG, different immuno-systems present different ability to quantify the PAG released in blood. The sensitivity (92 to 100%) and specificity of PAG radioimmunoassay when used for pregnancy diagnosis are very high. The assay of PAG can also bring very interesting information for researchers working in programs focused on the study of embryonic and fetal mortalities, as well as on embryo biotechnology (ET, FIV, clonage), animal nutrition, or infections diseases resulting in pathologies affecting the pregnancy. [less ▲]

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See detailGRB070429B: VLT observations.
Antonelli, L. A.; Stella, L.; Tagliaferri, G. et al

in GRB Coordinates Network (2007), 6372

Not Available

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See detailMorph switching in a dimorphic population of Triturus alpestris (Amphibia, Caudata)
Denoël, Mathieu ULg; Lena, Jean-Paul; Joly, Pierre

in Evolutionary Ecology (2007), 21(3), 325-335

The usual life cycle of Alpine newts comprises an aquatic larval stage and a terrestrial juvenile and adult stage. However, some populations differ from this pattern in exhibiting facultative ... [more ▼]

The usual life cycle of Alpine newts comprises an aquatic larval stage and a terrestrial juvenile and adult stage. However, some populations differ from this pattern in exhibiting facultative paedomorphosis where some individuals reach sexual maturity while retaining larval traits such as gills and gill slits. While paedomorphic newts can, in some circumstances, initiate metamorphosis, once a newt has commenced metamorphosis, the state is irreversible. Because the frequency of this switching from one morph to the other has never been quantified in the wild, we attempted to estimate switching rate and survival by carrying out a 3-year monitoring survey of a population inhabiting an alpine lake. While morph switching did occur in this population, it involved a relatively low proportion of the paedomorphs (approx. 12%), suggesting that metamorphosis is not favoured in the study population. The hypothesis of paedomorphic advantage was not supported since neither survival nor body condition differed between morphs. The ontogenetic pathway of wild Alpine newts is thus characterised by two forks in the developmental pathway. The first occurs during the larval stage (metamorphosis vs. paedomorphosis), and the second occurs in paedomorphic adults (switching for metamorphosis vs. continuation of the paedomorphic lifestyle). Such a two-level decision process may allow individuals to cope with environmental uncertainty. [less ▲]

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See detailExperimental validation protocol for micro-CT as screening tool for bone tissue engineering scaffolds
Kerckhofs, Greet ULg; Schrooten, Jan; Van Cleynenbreugel, Tim et al

Conference (2007)

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See detailProjet Référentiel Plancton de la Baie de Calvi : I. Les variations spatiales et temporelles des communautés phytoplanctoniques au large de la côte occidentale corse, en relation avec la dynamique des masses d’eau et le Front Liguro- Provençal
Goffart, Anne ULg; Hecq, Jean-Henri ULg

Report (2007)

Le rapport synthétise les variations spatiales et temporelles des communautés phytoplanctoniques au large de la côte occidentale corse, en relation avec la dynamique des masses d’eau et le Front Liguro ... [more ▼]

Le rapport synthétise les variations spatiales et temporelles des communautés phytoplanctoniques au large de la côte occidentale corse, en relation avec la dynamique des masses d’eau et le Front Liguro-Provençal. [less ▲]

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See detailGrotesques, concrétions et paysages
Havelange, Carl ULg; Christiaens, Alexandre

Book published by Les Brasseurs/art contemporain (2007)

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See detailBiodiversité et distribution écologique de l'avifaune des plantations du sud du Bénin
Lougbegnon, Toussaint; Codjia, Jean T. Claude; Libois, Roland ULg

in Actes du 1er colloque de l'UAC des Sciences Cultures et Technologies, Agronomie (2007)

In Benin and particular in the southern part, the natural habitat disappear or deteriorate dangerously. Only subsist the substitution biotopes. Thus, in this part of the country, the plantations will the ... [more ▼]

In Benin and particular in the southern part, the natural habitat disappear or deteriorate dangerously. Only subsist the substitution biotopes. Thus, in this part of the country, the plantations will the last "forest" cover in the next future. Are the plantations could be a good subsitution habitat for forest birds ? In the southern Benin, the wood cover consist in Elaeis guineensis, Tectona grandis and Cocos nucifera (littoral). Birds was surveyed in 12 sites in the three plantation types. Moreover, in these sites, the vegetation structure were described (vegetation cover in different height). The 99 birds species observed were analysed in terms of vegetation cover (ACP). This analysis revealed a good fit between the bird community and their habitat: some species are restricted in one or two plantation type when others ones are more ecological tolerant. [less ▲]

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See detailL’aura et la chose écrite. Une mise au point
Durand, Pascal ULg

in Piret, Pierre (Ed.) La littérature à l’ère de la reproductibilité technique. Réponses littéraires aux nouveaux dispositifs représentatifs créés par les médias modernes (2007)

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See detailContribution à l'étude du climat de trois cavités souterraines belges
Piron, Julie; Erpicum, Michel ULg; Ek, Camille ULg et al

in Bulletin de la Société Royale Belge d'Etudes Géologiques et Archéologiques (2007), XLVI

Some temperature and CO2 measures have been made for one year in the cave of Ramioul and in the cave of Comblain-au-Pont, and for six months in the underground quarry of Petit-Lanaye inférieure ... [more ▼]

Some temperature and CO2 measures have been made for one year in the cave of Ramioul and in the cave of Comblain-au-Pont, and for six months in the underground quarry of Petit-Lanaye inférieure. Temperature has been measured by dataloggers. These measures and the comparison between the different caves contributed to a better understanding of their climates. In the cave of Ramioul, closed by non insulated doors, the air movements are relatively low but there are some heat exchanges between the outside and inside air by conduction through the doors. The cave can be divided into two parts each with a different climatic behaviour. High and dangerous CO2 rates have already been measured in this cave. Rates fluctuate in an irregular way and without any connection with the natural seasonal cycle, and the CO2 origins stay uncertain. The cave of Comblain-au-Pont can be divided into two major parts: one enclosed and the other ventilated. The ventilated region is a “wind tube” during the winter, but it doesn’t reverse in the summer. On a larger scale, this region can be considered as a cold air trap despite its two exits, since it has a descendant morphology. <br />In the underground carry of Petit-Lanaye inférieure, the low number of data doesn’t allow a complete diagnosis of the climate organisation, but can give a first idea for the summer period. We can already distinguish some parts that are more or less influenced by the outside temperature fluctuations, probably in relation with some air movements which organised <br />themselves in a complex way in the labyrinthic galleries network. [less ▲]

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See detailAn unusual cell type of the auditory organ during neonatal development: the inner pillar cells
Thelen, Nicolas ULg; Breuskin, I; Malgrange, B et al

Poster (2007)

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