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See detailLa sensibilité de certaines races canines à l’ivermectine serait due à une mutation génétique
Cuvelier, Christine; Cheu, Esteban ULg

in Folia Veterinaria (2010)

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See detailLe système de contrôle du chant des passériformes : un modèle d’étude de la plasticité neuronale
Boseret, Géraldine ULg; Beckers, Jean-François ULg

in Annales de Médecine Vétérinaire (2010), 154(1), 48-60

In many songbirds species, wherein we can find the domestic canary (Serinus canaria), singing is generally produced either to defend a territory or to attract a mate. The Song Control System is a neural ... [more ▼]

In many songbirds species, wherein we can find the domestic canary (Serinus canaria), singing is generally produced either to defend a territory or to attract a mate. The Song Control System is a neural specialization, mostly located in telencephalic regions of the brain and associated to the control of song learning, perception and production. External factors such as testosterone (T), photoperiod and social cues have been described to modulate singing behaviour. Parallel to the song behaviour, some of the song control system nuclei (HVC, RA and Area X) demonstrate a puzzling amount of seasonal plasticity. Their volumes varies seasonally based on changes in cell spacing, neuropile size, dendritic arborisation and in the case on the nidopallial nucleus HVC on the incorporation of newborn neurons. We present here a review of this curious phenomenon of adult neuroplasticity associated to a complex behaviour, which doesn’t occur as far as we know in the mammalian adult brain [less ▲]

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See detailNotice étymologique: "fez"
Baiwir, Esther ULg

in Steinfeld, Nadine (Ed.) TLF-Etym (2010)

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See detailRecent trends of inorganic chlorine and halogenated source gases above the Jungfraujoch and Kitt Peak stations derived from high-resolution FTIR solar observations
Mahieu, Emmanuel ULg; Rinsland, Curtis P.; Gardiner, Tom et al

in Geophysical Research Abstracts (2010), 12(EGU2010-2420-3),

The longest series of Fourier Transform Infrared (FTIR) high spectral resolution solar absorption observations are available from the Jungfraujoch and Kitt Peak stations, located at 46.5ºN and 30.9ºN ... [more ▼]

The longest series of Fourier Transform Infrared (FTIR) high spectral resolution solar absorption observations are available from the Jungfraujoch and Kitt Peak stations, located at 46.5ºN and 30.9ºN, respectively. State-of-the-art interferometers are operated at these sites within the framework of the Network for the Detection of Atmospheric Composition Change (NDACC, visit http://www.ndacc.org). These instruments allow to record spectra on a regular basis, under clear-sky conditions, using a suite of optical filters which altogether cover the 2 to 16 micron spectral range. Numerous absorption features characterized in the HITRAN compilations (e.g. Rothman et al., 2008) are encompassed in this mid-infrared region. Their analyses with either the SFIT-1 or SFIT-2 algorithm allow retrieving total columns of the target gases. Moreover, information on their distribution with altitude can generally be derived when using SFIT-2 which implements the Optimal Estimation Method of Rodgers (1990). Among the two dozen gases of atmospheric interest accessible to the ground-based FTIR technique, we have selected here a suite of long-lived halogenated species: HCl, ClONO2, CCl2F2, CCl3F, CHClF2, CCl4 and SF6. Time series available from the two sites will be presented, compared and critically discussed. In particular, changes in the abundances of theses gases since the peak in inorganic chlorine (Cly, which occurred in 1996-1997) and their intra-annual variability will be characterized with a statistical tool using bootstrap resampling (Gardiner et al., 2008). Trends and their associated uncertainties will be reported and put into perspective with the phase-out regulations of the production of ozone depleting substances adopted and implemented by the Montreal Protocol, its Amendments and Adjustments. For instance, the trends affecting the reservoir species HCl, ClONO2, and their summation which is a good proxy of the total inorganic chlorine, have been calculated using all available daily mean measurements from January 1996 onwards. The following values were obtained for Jungfraujoch, when using 1996 as the reference year: -0.90±0.10%/yr for HCl, -0.92±0.26 %/yr for ClONO2, and -0.96±0.14 %/yr for Cly; in all cases, the uncertainties define the 95% confidence interval around the trend values. For Kitt Peak, the corresponding trends are: -0.55±0.34 %/yr for HCl, -1.27±0.84 %/yr for ClONO2 and -0.61±0.51 %/yr for Cly, they are statistically consistent with the Jungfraujoch rates of decrease. Further trend data will be presented at the EGU General Assembly while supplementary information on Jungfraujoch results will be available from communications at the same meeting by Duchatelet et al. (2010), Lejeune et al (2010) and Rinsland et al (2010). Comparisons with model data are also foreseen. [less ▲]

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See detailLeggere la mancanza di Sciascia
Curreri, Luciano ULg

in Incontri : Rivista Europea di Studi Italiani (2010), 2

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See detailAssessment of exposure to persistent organochlorine compounds in epidemiological studies on breast cancer : a literature review and perspectives for the CECILE study
Bachelet, D.; Verner, M.-A.; Guihenneuc-Jouyaux, C. et al

in Acta Clinica Belgica (2010), 65(1), 49-57

Breast cancer is the most frequent neoplastic disease in women representing 50,000 new cases each year in France. The well-established risk factors, as those related to the reproductive history, cannot ... [more ▼]

Breast cancer is the most frequent neoplastic disease in women representing 50,000 new cases each year in France. The well-established risk factors, as those related to the reproductive history, cannot account for all cases of breast cancer. Other environmental or lifestyle factors need to be explored in depth. Persistent organochlorine compounds (OCs) have attracted attention because of their endocrine disrupting properties that make them possible risk factors for breast cancer, but most epidemiological studies did not report an association between OC concentrations in blood or adipose tissue and breast cancer risk. In these studies, OC levels were measured in biological samples obtained at the time of cancer diagnosis or only a few years before. In this paper, we review the studies on dichlorodiphenyltrichloroethane (DDT) and polychlorobiphenyl (PCB) exposures in relation to breast cancer. We discuss the relevance of OC biological measurements as lifelong exposure indicators, and we describe a new method for assessing exposure to OCs in epiderniological studies. Most studies were carried out recently and reported OC concentrations that were substantially lower than those reported during the 1960s and 1970s. We make the assumption that these OC levels were not reliable indicators, as they were not measured during etiologically relevant periods in a woman's lifetime, i.e. during the prenatal period, the puberty or the period before a first full-term pregnancy, which are regarded as key periods of vulnerability of mammary gland cells to carcinogens. This may have resulted in non differential exposure misclassification and hence in the absence of an observed association between OC levels and breast cancer in most epidemiological studies. Physiologically-based pharmacokinetic (PBPK) models allow estimating persistent organic pollutant lifetime toxicokinetics profiles retrospec- tively in women, by taking into account individual differences in metabolism and key events that affect OC kinetics such as lactation and weight variations. PBPK models will be applied to the participants of a large French population-based case-control study including 1080 cases and 1055 controls. Exposure misclassification could have prevented from observing an association between exposure to OCs and breast cancer risk. PBPK models could be used as a novel way of assessing exposure to OCs and to investigate the impact of internal exposure at different time windows on breast cancer incidence. [less ▲]

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See detailDevelopment of a biotransformation process of hydroperoxides into green leaf volatiles using sugar beet leaves
Gigot, C.; Ongena, Marc ULg; Fauconnier, Marie-Laure ULg et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2010)

Natural green leaf volatiles (GLVs) are commonly sole AS aldehydic and alcoholic flavors; their synthesis is a great challenge for industry. Especially, the bioconversion step of fatty acid hydroperoxides ... [more ▼]

Natural green leaf volatiles (GLVs) are commonly sole AS aldehydic and alcoholic flavors; their synthesis is a great challenge for industry. Especially, the bioconversion step of fatty acid hydroperoxides into aldehydes by the hydroperoxide lyase (HL). This widely studied enzyme is present in cell membranes of green organs from superior plants. Extracted from its natural condition, HL is subject to a suicidal behavior, being irreversibly inhibited by its own substrate. Furthermore, GLVs produced are highly volatile and quickly degraded by other plant enzymes. Thence, high GLVs levels in industrial production are very difficult to obtain, but several biotechnological tools could be developed to enhance this natural synthesis level more than hundred times. This paper will describe a new method for GLVs production in bioreactor using sugar beet leaves as source of HL. One step reaction, including hydroperoxide metabolisation and GLVs extraction, is performed during a short time process. Downstream processing to dispose of natural and pure GLVs molecule will also be discussed. [less ▲]

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See detailHydrolysis of starch by sorghum malt for maltodextrin production
Ba, K.; Destain, Jacqueline ULg; Thonart, Philippe ULg

Scientific conference (2010)

Maltodextrin is a mixture of saccharides with a molecular weight between polysaccharides and oligosaccharides with DE lower than 20. Maltodextrin is more soluble in water than native starches, also is ... [more ▼]

Maltodextrin is a mixture of saccharides with a molecular weight between polysaccharides and oligosaccharides with DE lower than 20. Maltodextrin is more soluble in water than native starches, also is cheaper in comparison with other major edible hydrocolloids. Maltodextrin is obtained by moderate enzymatic or acidic hydrolysis of starch. The hydrolysis of starch, catalyzed by amylases, is the most important commercial enzyme process. The hydrolyzed products are widely applied in food, paper and textile industries. Because of the increasing demand for these enzymes in various industries, there is enormous interest in developing enzymes with better properties, such as raw starch-degrading amylases suitable for industrial applications and their cost-effective production techniques. Sorghum (Sorghum bicolor) is a widely grown crop in Africa. Obtaining enzymes from sorghum requires a transformation. The objective of this study was application of sorghum amylase for maltodextrin. Sorghum seeds were supplied by the ISRA (Bambey, Senegal). Seeds were germinated in the laboratory at 30°C for 72 h and the sorghum malt was dried at 40°C for 48 h. Corn starch (from Roquette, France) hydrolysis was assayed in a bioreactor of 2 l at a temperature of 65°C gently stirred. Raw starch was slurried in water (30% w/v) and sorghum malt was introduced, chloride calcium was added, pH was adjusted to 6. Maltodextrin was characterized in term of the dextrose equivalent (DE) during the hydrolysis. The yield of hydrolysis was evaluated by soluble solids (° BRIX) at different hydrolysis time. The glucose concentration released was measured by DNS method (Miller method). [less ▲]

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See detailNote sur viçvasuvid- (Rsamhitâ 1.48.2a)
Swennen, Philippe ULg

in Journal Asiatique (2010), 298(1), 169-172

Viçvasuvid is a two-members compound, an adjective with haplology for *viçvâvasuvid-.

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See detailNotice étymologique: "ketmie"
Baiwir, Esther ULg

in Baiwir, Esther (Ed.) TLF-Etym (2010)

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See detailLecidea doliiformis belongs to Micarea, Catillaria alba to Biatora and Biatora ligni-mollis occurs in Western Europe
Sérusiaux, Emmanuël ULg; Brand, A. Maarten; Motiejunaite, Jurga et al

in Bryologist (2010), 113

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See detailBe Too Kind to a Woman, She’ll Feel Incompetent: Benevolent Sexism Shifts Self-construal and Autobiographical Memories Toward Incompetence
Dumont, Muriel ULg; Sarlet, Marie ULg; Dardenne, Benoît ULg

in Sex Roles (2010), 62

The present study investigated how benevolent (BS) and hostile sexism (HS) shift women’s self-construal and autobiographical memory. Belgian undergraduates (only women, N=45, mean age=21.8) were ... [more ▼]

The present study investigated how benevolent (BS) and hostile sexism (HS) shift women’s self-construal and autobiographical memory. Belgian undergraduates (only women, N=45, mean age=21.8) were confronted either by BS, HS or neutral comments in the context of a job interview. After performing a cognitive task, participants reported the intrusive thoughts that came to their mind during the task. Later, autobiographical memory for self-incompetence was assessed. Performance response latencies were slower after BS than HS. Also, BS generated more disturbing mental intrusions related to the idea of being incompetent than HS. Autobiographical memory similarly indicated greater access for incompetence after BS. Although HS was more aggressive in tone, it did not shift women’s self-construal and autobiographical memories toward incompetence. [less ▲]

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See detailEnjeux sanitaires, socio-économiques et environnementaux liés à la réutilisation des eaux usées dans le maraîchage urbain à Yaoundé au Cameroun : cas du bassin versant de l’Abiergué
Kouam Kenmogne, Guy Romain ULg; Rosillon, Francis ULg; Mpakam, Hernanie Grelle et al

in VertigO : la Revue Electronique en Sciences de l'Environnement (2010), 10(2),

The area catchment of Abiergué, located in the urban perimeter of Yaounde between 11°05' and 11°25' East longitude and between 3°51' and 3°54' North latitude experiencing an important truck-farming ... [more ▼]

The area catchment of Abiergué, located in the urban perimeter of Yaounde between 11°05' and 11°25' East longitude and between 3°51' and 3°54' North latitude experiencing an important truck-farming activity in its bottoms funds from Nkolbikok to Nkolbisson. A study started in 2005 in this area, has for main objective to contribute to the enhancement of this activity while working to reduce the involved risks (health and environmental). Many activities have been developed using a transdisciplinary approach. The socio-economic conditions of the actors implied in this die have been described. The constraints and the assets related to the development of the urban truck farming were raised. The wastewater comes from various origins (households, market, health centres,…) and have significant levels of BOD5 (10 to 360 mg O2 /l), COD (15 to 601 mg O2 /l), Fecal Coliform (5025 UFC/100ml to 3 x 106 UFC/100ml), Fecal Streptococci (1960 UFC/100ml to 138 000 UFC/100ml). Variable rates of cysts of protozoa (Entamoeba hystolotica and Giardia sp) and eggs of helminths were detected in this water. The reuse of wastewater has for corollary the emergence of waterborne diseases such as intestinal amebiasis which as well assigns the actors engaged in this die as the population in general independently of sex, age or social status. Many practices and many risk behaviors contribute to the spread of waterborne diseases. Despite the risk of waterborne diseases, this activity contributes significantly to food security, strengthening the economic potential, development of urban space in short to improve conditions and the framework of life of the categories of actors involved in this activity in particular and population in general. Actions economically viable, socially acceptable and ecologically sustainable are to be implemented by State or NGO in order to reduce the negative aspects and strengthen the positive aspects of this multipurpose activity. [less ▲]

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See detailNotice étymologique: "coufique"
Baiwir, Esther ULg

in Steinfeld, Nadine (Ed.) TLF-Etym (2010)

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See detail« Projet de loi relative aux procédures de réparation collective »,
Boularbah, Hakim ULg; Puttemans, Andrée; Vandenhaute, Eric et al

in Revue de Droit de l'ULB (2010)

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See detailThe Photoionization Dynamics of Methyl Iodide (CH3I): a joint Photoelectron and Mass Spectrometric Investigation.
Locht, Robert ULg; Dehareng, Dominique ULg; Hottmann, K. et al

in Journal of Physics : B Atomic Molecular & Optical Physics (2010), 43(10), 105101

The threshold photoelectron (TPES) and the photoionization mass spectrometric (PIMS) study of CH3I in the 8-20 eV photon energy range are presented. The interpretation and assignments are supported by ab ... [more ▼]

The threshold photoelectron (TPES) and the photoionization mass spectrometric (PIMS) study of CH3I in the 8-20 eV photon energy range are presented. The interpretation and assignments are supported by ab initio calculations. The TPES shows many new discrete features in the Jahn-Teller split ground X 2E (2A'-2A”) state of CH3I+. A new continuous band starting at about 11.7 eV is detected. These observations are essentially correlated with autoionizing transitions. This interpretation is supported by constant ion state (CIS) spectroscopy. A large enhancement of the transitions to the A 2A and B 2E ionic states is ascribed to large autoionizing contributions. Based on the present calculations, the weak to very weak bands in the 18.0 eV-23.0 eV photon energy range are mainly assigned to 2a1-1 ionization and to double excitations corresponding essentially to the 2e-2 4a11 and 3a1- 1 2e-1 4a11 configurations. The photoionization mass spectrometric study allowed us to investigate in detail the ionization and dissociation of CH3I+ leading to CH2+, CH3+, I+ and CH2I+ from the threshold up to 20 eV photon energy. The experimental data are compared to ab initio calculated dissociation energies. The threshold of appearance of CH3+, I+ and CH2I+ fragments are concentrated in the 12.2-12.7 eV photon energy range. All three exit channels are correlated with the ground state of CH3I+ via nonadiabatic transitions. All three fragment ions have to appear through predissociation of the ionic X 2E state and autoionizing dissociation from the (2E3/2)6p Rydberg state. This interpretation is strongly supported by the photoabsorption spectrum measured recently in the same photon energy range [1]. At higher energies, beside direct or predissociation of the A 2A1 and B 2E states of CH3I+, autoionization is also suggested to contribute to the fragmentation in all decay channels. [less ▲]

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See detailComparison of adaptive filters for gas turbine performance monitoring
Borguet, Sébastien ULg; Léonard, Olivier ULg

in Journal of Computational & Applied Mathematics (2010), 234(7), 2202-2212

Kalman filters are widely used in the turbine engine community for health monitoring purpose. This algorithm has proven its capability to track gradual deterioration with a good accuracy. On the other ... [more ▼]

Kalman filters are widely used in the turbine engine community for health monitoring purpose. This algorithm has proven its capability to track gradual deterioration with a good accuracy. On the other hand, its response to rapid deterioration is either a long delay in recognizing the fault, and/or a spread of the estimated fault on several components. The main reason of this deficiency lies in the transition model of the parameters that assumes a smooth evolution of the engine condition. The aim of this contribution is to compare two adaptive diagnosis tools that combine a Kalman filter and a secondary system that monitors the residuals. This auxiliary component implements on one hand a covariance matching scheme and on the other hand a generalised likelihood ratio test to improve the behaviour of the diagnosis tool with respect to abrupt faults. [less ▲]

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See detailCyprinid herpesvirus 3
Michel, Benjamin; Fournier, Guillaume; Lieffrig, François et al

in Emerging Infectious Diseases (2010), 16

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See detailAspects of population biology: Epizootics in harbour seals (Phoca vitulina): clinical aspects
Siebert, Ursula; Gulland, Frances; Harder, Timm et al

in Desportes, G.; Bjorge, A.; Rosing-Avid, A. (Eds.) et al Harbour seals in the North Atlantic and the Baltic (2010)

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See detailSteel Hollow Columns filled with self compacting Concrete under Fire Conditions
Dotreppe, Jean-Claude ULg; Chu, Thi Binh; Franssen, Jean-Marc ULg

in The third International Congress and Exhibition - Proceedings Disc (2010)

Concrete filled steel hollow section (CFSHS) columns can carry important loads and therefore are used extensively in the construction of high-rise buildings. Steel hollow sections are filled usually with ... [more ▼]

Concrete filled steel hollow section (CFSHS) columns can carry important loads and therefore are used extensively in the construction of high-rise buildings. Steel hollow sections are filled usually with ordinary concrete, but filling problems may arise with small cross sections and dense reinforcement or hollow sections (tubes) surrounding another profile (tube or H section) when the distance between the two profiles is small. For such a configuration, self-compacting concrete can be recommended. Ten columns filled with self-compacting concrete embedding another steel profile have been tested in the Fire Engineering Laboratory of the University of Liege - Belgium. The non linear finite element software SAFIR developed at the University of Liege has been used to simulate the thermal and structural behavior under fire conditions. A good agreement between numerical and experimental results has been obtained. This shows that SAFIR code can predict well the behavior of CFSHS columns and that the properties of self-compacting concrete at high temperatures can be considered to be the same as those of ordinary concrete. Another purpose of this study was to give practical tools to consulting engineers. [less ▲]

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