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See detailLe développement de starters lactiques : de la cellule au produit fini
Thonart, Philippe ULg; Kouakou, P.; Dortu, C. et al

Conference (2009, November 02)

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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 detailUse of redworms (Perionyx excavatus) to manage agricultural wastes and supply valuable feed for poultry
Vu, Dinh Ton; Han Quang, Hanh ULg; Nguyen, Dinh Linh et al

in Livestock Research for Rural Development (2009), 21(number 11), 192

Perionyx excavatus, cultured in Vietnam in early 1990s, showed an important role in managing organic wastes and supplying a very nutritious feed for animals. To develop vermiculture in practice, four ... [more ▼]

Perionyx excavatus, cultured in Vietnam in early 1990s, showed an important role in managing organic wastes and supplying a very nutritious feed for animals. To develop vermiculture in practice, four treatments of different substrates including 100% fresh cattle manure (CM); cattle manure + pig manure in 50:50 ratio (CPM); cattle manure + pig manure + rice straw in 50:40:10 ratio (CPMRS) and pig manure + rice straw in 90:10 ratio (PMRS) were prepared to examine worms’ growth and their decomposition efficiency. All substrates were composted 45 days before feeding to worms. The result showed that cattle manure (CM) was the best substrate for worm growth (biomass gained 713 g after 45 days or 242.6% of growth rate). The worm biomass achieved in CPMRS and PMRS treatments was significantly lower than that in CM treatment. As compared to primary substrates, vermicomposts exhibited an excellent result with a great increase in the amount of total P (0.3 – 0.6%), total K (0.09 – 0.23%), Ca (0.51 – 0.79%) and a decrease in N-NH3 and N-NH4+. A study was carried out to evaluate the influence of feed supplemented with worms on the growth and meat quality of broiler chickens (n=148). Starting at 4 weeks old the chickens were divided into a control group and three experimental groups corresponding to worm levels in the diet of 1, 1.5 and 2% on a dry matter basis according to a completely randomized design. Chicken fed the diet supplemented with 2% worms had the highest live weight at 10 weeks (1925 g/head vs 1823 g/head for the control). Percentage of breast and leg meat was also higher than in the control group. Chickens in the three worm groups had better FCR. The different levels of red worm supplementation did not affect meat quality (pH, color, and the rate of dehydration after storage and processing). [less ▲]

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See detailHot stars observed by XMM-Newton. I. The catalog and the properties of OB stars
Nazé, Yaël ULg

in Astronomy and Astrophysics (2009), 506

Aims: Following the advent of increasingly sensitive X-ray observatories, deep observations of early-type stars became possible. However, the results for only a few objects or clusters have until now been ... [more ▼]

Aims: Following the advent of increasingly sensitive X-ray observatories, deep observations of early-type stars became possible. However, the results for only a few objects or clusters have until now been reported and there has been no large survey comparable to that based upon the ROSAT All-Sky Survey (RASS). <BR />Methods: A limited survey of X-ray sources, consisting of all public XMM-Newton observations (2XMMi) and slew survey data (XMMSL1), is now available. The X-ray counterparts to hot, massive stars have been searched for in these catalogs. <BR />Results: About 300 OB stars were detected with XMM-Newton. Half of them were bright enough for a spectral analysis to be possible, and we make available the detailed spectral properties that were derived. The X-ray spectra of O stars are represented well by low (<1 keV) temperature components and seem to indicate that an absorption column is present in addition to the interstellar contribution. The X-ray fluxes are well correlated with the bolometric fluxes, with a scatter comparable to that of the RASS studies and thus larger than found previously with XMM-Newton for some individual clusters. These results contrast with those of B stars that exhibit a large scatter in the L[SUB]X[/SUB] - L[SUB]BOL[/SUB] relation, no additional absorption being found, and the fits indicate a plasma at higher temperatures. Variability (either within one exposure or between multiple exposures) was also investigated whenever possible: short-term variations are far more rare than long-term ones (the former affects a few percent of the sample, while the latter concerns between one third and two thirds of the sources). <BR />Conclusions: This paper presents the results of the first high-sensitivity investigation of the overall high-energy properties of a sizable sample of hot stars. Based on observations collected with XMM-Newton, an ESA Science Mission with instruments and contributions directly funded by ESA Member States and the USA (NASA), and accessed via the 2XMMi and XMM slew survey catalogs. Tables 1 and 5 are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/506/1055 Postdoctoral Researcher FNRS. Visiting astronomer, UNAM-Morelos (Mexico). [less ▲]

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See detailL’articulation paysagère entre zones d’activités et noyaux bâtis
De Smet, Fabian ULg

in Territoire(s) Wallon(s) (2009), 3

The Walloon territory is legally fragmented in specific functional areas. Each one of them has formal characteristics which can enter in visual conflict. On the basis of sites observations, we analyse ... [more ▼]

The Walloon territory is legally fragmented in specific functional areas. Each one of them has formal characteristics which can enter in visual conflict. On the basis of sites observations, we analyse landscape and urban qualities of limits between activities estates and cores of habitat. We also wonder what means to implement to improve their cohabitation. [less ▲]

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See detailTumor ZAC1 expression is associated with the response to somatostatin analog therapy in patients with acromegaly.
Theodoropoulou, Marily; Tichomirowa, Maria A; Sievers, Caroline et al

in International Journal of Cancer = Journal International du Cancer (2009), 125(9), 2122-6

Somatostatin analogs (SSA) with their potent antisecretory and antiproliferative effects are the main medical treatment option for patients with neuroendocrine tumors, such as gastroenteropancreatic and ... [more ▼]

Somatostatin analogs (SSA) with their potent antisecretory and antiproliferative effects are the main medical treatment option for patients with neuroendocrine tumors, such as gastroenteropancreatic and acromegaly-associated growth hormone secreting pituitary tumors. Although a good portion of acromegalic patients gets normalized after SSA treatment, strict hormonal control is not achieved in a sizeable proportion of these patients. The reasons for this incomplete response to SSA treatment are unclear. We have found that the tumor suppressor ZAC1 (LOT1/PLAGL1) is essential for the antiproliferative effect of SSA in pituitary tumor cells. The aim of the present retrospective cohort study was to determine whether ZAC1 immunoreactivity in archival somatotrophinoma tissue derived from 45 patients with acromegaly routinely pretreated with SSA before surgery, was associated with response to SSA (normalization of GH, IGF-I and presence of tumor shrinkage). All tumors displayed ZAC1 immunoreactivity [weak (+; n = 15), moderate (++; n = 16) and strong (+++; n = 14)]. A significant positive correlation was found between strong ZAC1 immunoreactivity and IGF-I normalization and presence of tumor shrinkage after SSA treatment, which was not affected by age at diagnosis, gender or duration of SSA treatment. These in vivo data combined with the antiproliferative properties of ZAC1/Zac1 provide evidence of a mechanistic role for this transcription factor on SSA induced tumor shrinkage and hormone normalization. [less ▲]

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See detailL’ikhtilâf, l’autre principe de l’islam. Une entrée pour penser le compromis en contextes islamiques
Nachi, Mohamed ULg

in Nachi, Mohamed (Ed.) Les figures du compromis dans les sociétés islamiques. Perspectives historiques et socio-anthropologiques (2009, November)

L'étude introduit une réflexion sur le compromis dans les sociétés islamiques en partant de la place de l'Ikhtilâf (divergence/différence) en islam, dans la pensée islamique et l'imaginaire politique dans ... [more ▼]

L'étude introduit une réflexion sur le compromis dans les sociétés islamiques en partant de la place de l'Ikhtilâf (divergence/différence) en islam, dans la pensée islamique et l'imaginaire politique dans ces sociétés. [less ▲]

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See detailL'évolution du vivant... un enseignement à (re)construire.
Hindryckx, Marie-Noëlle ULg

in TRACeS de ChanGements (2009), 193

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See detailY'a plus d'poissons... Y'a plus d'reptiles
Hindryckx, Marie-Noëlle ULg

in TRACeS de ChanGements (2009), 193

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See detailBovine leukemia virus can be classified into seven genotypes: evidence for the existence of two novel clades.
Rodriguez, Sabrina ULg; Golemba, Marcelo D.; Campos, Rodolfo H. et al

in Journal of General Virology (The) (2009), 90(Pt 11), 2788-97

Previous studies have classified the env sequences of bovine leukemia virus (BLV) provirus from different locations worldwide into between two and four genetic groupings. These different studies gave ... [more ▼]

Previous studies have classified the env sequences of bovine leukemia virus (BLV) provirus from different locations worldwide into between two and four genetic groupings. These different studies gave unique names to the identified groups and no study has yet integrated all the available sequences. Thus, we hypothesized that many of the different groups previously identified actually correspond to a limited group of genotypes that are unevenly distributed worldwide. To examine this hypothesis, we sequenced the env gene from 28 BLV field strains and compared these sequences to 46 env sequences that represent all the genetic groupings already identified. By using phylogenetic analyses, we recovered six clades, or genotypes, that we have called genotypes 1, 2, 3, 4, 5 and 6. Genotypes 1-5 have counterparts among the sequence groupings identified previously. One env sequence did not cluster with any of the others and was highly divergent when compared with the six genotypes identified here. Thus, an extra genotype, which we named 7, may exist. Similarity comparisons were highly congruent with phylogenetic analyses. Furthermore, our analyses confirmed the existence of geographical clusters. [less ▲]

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See detailLes relations "spatiales" entre géomatique et géographie
Billen, Roland ULg

in Bulletin de la Société Géographique de Liège (2009), (52), 45-47

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See detailA way to improve management of underground utilities
Sainovic, Ivana ULg; Billen, Roland ULg

in De Mayer, Philippe; Neutens, Tijs; De Ryck, Marijke (Eds.) Proceedings of the 4th International Workshop on 3D Geo-Information (2009, November)

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See detailA Geocodification for 3D objects terrestrial surveys
Kasprzyk, Jean-Paul ULg; Billen, Roland ULg

in Neutens, Tijs; De Ryck, Marijke; De Maeyer, Philippe (Eds.) Proceedings of the 4th International Workshop on 3D Geo-information (2009, November)

Nowadays, mean 3D data aquisition techniques are photogrammetry and laserscanning. Their advantage is the huge amount of points that can be measured in a very short time on the field. Nevertheless, the ... [more ▼]

Nowadays, mean 3D data aquisition techniques are photogrammetry and laserscanning. Their advantage is the huge amount of points that can be measured in a very short time on the field. Nevertheless, the post-processing associated to these techniques allowing to build a real 3D model from the clouds of points is very long. Therefore, we developed a geocodification ("field to finish") for the 3D data acquisition at a low and/or middle level of details. Despite each point is measured one by one with a total station, the user can gain a lot of time because of the almost-absence of post processing. This paper shows some of the developed techniques and tries to demonstrate the possible complementarity between geocodification, laserscanning and photogrammtry. [less ▲]

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See detailLe médecin en promotion de la santé à l'école - Actes des ateliers
Vandoorne, Chantal ULg; Melen, Geoffroy ULg; Saglimbene, Concetta ULg et al

Scientific conference (2009, November)

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See detailL'importance des coopératives dans le commerce équitable
Huybrechts, Benjamin ULg

Report (2009)

Dans cette huitième e-note, Benjamin Huybrechts (Centre d’Economie Sociale, HEC Management School, Université de Liège) analyse la relation entre le commerce équitable et l’entrepreneuriat coopératif. Il ... [more ▼]

Dans cette huitième e-note, Benjamin Huybrechts (Centre d’Economie Sociale, HEC Management School, Université de Liège) analyse la relation entre le commerce équitable et l’entrepreneuriat coopératif. Il en conclut que le modèle du commerce équitable a tout à gagner à tenter d’appliquer les principes d’équité, de justice et de démocratie qu’il promeut également à l’interne des organisations, tant au Sud qu’au Nord. A l’inverse, le mouvement coopératif a tout à gagner à s’appuyer sur le commerce équitable pour donner un nouveau souffle à ses principes et à ses acteurs dans un contexte de dialogue Nord-Sud. [less ▲]

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See detailMulti-armed bandit based policies for cognitive radio's decision making issues
Jouini, Wassim; Ernst, Damien ULg; Moy, Christophe et al

in Proceedings of the 3rd International Conference on Signals, Circuits and Systems (SCS) (2009, November)

We suggest in this paper that many problems related to Cognitive Radio’s (CR) decision making inside CR equipments can be formalized as Multi-Armed Bandit problems and that solving such problems by using ... [more ▼]

We suggest in this paper that many problems related to Cognitive Radio’s (CR) decision making inside CR equipments can be formalized as Multi-Armed Bandit problems and that solving such problems by using Upper Confidence Bound (UCB) algorithms can lead to high-performance CR devices. An application of these algorithms to an academic Cognitive Radio problem is reported. [less ▲]

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See detailL'architecture et la sculpture gothiques. Des clefs pour comprendre
Van den Bossche, Benoît ULg

in Staquet, Anne (Ed.) Au temps des cathédrales... (2009)

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See detailBuitenlands familial statuut en vreemdelingenrecht: het ipr in het verdomhoekje?
Wautelet, Patrick ULg

Conference (2009, November)

This presentation attempts to uncover the influence of migration policy and law on the processes of private international law dealing with cross-border family relationships, using examples from Belgian ... [more ▼]

This presentation attempts to uncover the influence of migration policy and law on the processes of private international law dealing with cross-border family relationships, using examples from Belgian and Dutch practice. [less ▲]

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