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See detailPRESERVATION OF NORMAL MORPHOLOGY OF HUMAN LIVERS AFTER 24 HOURS OF HYPOTHERMIC MACHINE PERFUSION. A FIRST-IN-MAN STUDY
Monbaliu, D.; Liu, Q.; Libbrecht, L. et al

in Transplant International (2011, September), 24(2), 151-151

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See detailEndometrial thickness in different cut-off points for predicting abnormal endometrium in Vietnamese women with postmenopausal bleeding
To, Hong ULg

in Ultrasound in Medicine & Biology (2011, August 26), 37(8S), 118

Purpose: The aim of this study is to find the suitable cutoff point of endometrial thickness (ET) for predicting abnormal endometrium in Vietnamese women with postmenopausal bleeding (PMB). Material ... [more ▼]

Purpose: The aim of this study is to find the suitable cutoff point of endometrial thickness (ET) for predicting abnormal endometrium in Vietnamese women with postmenopausal bleeding (PMB). Material & Methods: A prospective study was carried out during 2 years. 308 women, who did not use any hormone therapy, were suffered from PMB. All of them were measured ET by transvaginal sonography before an endometrial biopsy. Dilation and curettage (D&C) was indicated in women with ET ≥ 3 mm to diagnose an abnormal endometrium (hyperplasia atypia or cancer). We compared the sensitivity and false-negative rate at each 1-mm interval cutoff point of ET for detecting these histopathologies. Results: 292 women gave their consent to perform an endometrial biopsy (D&C). Their mean age was 59.4 ± 9.3 years. The median time of amenorrhea was 5 years (range 2-13 years); 12.67% (95%CI 9.10-17.04) of cases were diagnosed an abnormal ET in which the mean of endometrial thickness found was 4.0±1.7 mm (95% CI 3.8-11.8). In comparison to seven cutoff points, the ET at 4 mm showed the highest detection rate of abnormal endometrium in women with PMB (95% of sensitivity for 4% false-negative rate) Conclusion: The ET at 4 mm is the most suitable cutoff point for predicting an abnormal endometrium in Vietnamese women with PMB. [less ▲]

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See detailchi-gamma mixing in an expanding universe
Mandal, Subhayan ULg; Cudell, Jean-René ULg

in PoS - Proceedings of Science (2011, August)

We establish the equation of motion of pseudoscalar particles coupled to an electro- magnetic field in a classical gravitational background through the use of conformal time and flat geometry. We show ... [more ▼]

We establish the equation of motion of pseudoscalar particles coupled to an electro- magnetic field in a classical gravitational background through the use of conformal time and flat geometry. We show that the expansion of the universe can lead to larger mixing than in a station- ary universe. We also show that for a broad range of parameters, one can obtain resonant mixing, i.e. a region in which the mixing becomes maximum. [less ▲]

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See detailNeutrino masses beyond the tree level
Aristizabal Sierra, Diego ULg

in Few-Body Systems (2011, July)

Models for Majorana neutrino masses can be classified according to the level in perturbation theory at which the effective dimension five operator LLHH is realized. The possibilities range from the tree ... [more ▼]

Models for Majorana neutrino masses can be classified according to the level in perturbation theory at which the effective dimension five operator LLHH is realized. The possibilities range from the tree-level up to the three-loop level realizations. We discuss some general aspects of this approach and speculate about a model independent classification of the possible cases. Among all the realizations, those in which the effective operator is induced by radiative corrections open the possibility for lepton number violation near -or at- the electroweak scale. We discuss some phenomenological aspects of two generic radiative realizations: the Babu-Zee model and supersymmetric models with bilinear R-parity violation. [less ▲]

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See detailUnusual skip marks from the early Visean Molignee Formation (Mississippian) of sourthern Belgium
Mottequin, Bernard ULg; Poty, Edouard ULg

in Geological Survey of Western Australia, Record (2011, July), 2011/20

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See detailA Verification-Based Approach to Memory Fence Insertion in Relaxed Memory Systems
Linden, Alexander ULg; Wolper, Pierre ULg

in Lecture Notes in Computer Science (2011, July)

This paper addresses the problem of verifying and correcting programs when they are moved from a sequential consistency execution environment to a relaxed memory context. Specifically, it considers the ... [more ▼]

This paper addresses the problem of verifying and correcting programs when they are moved from a sequential consistency execution environment to a relaxed memory context. Specifically, it considers the TSO (Total Store Order) relaxation, which corresponds to the use of store buffers, and its extension x86-TSO, which in addition allows synchronization and lock operations. The proposed approach uses a previously developed verification tool that uses finite automata to symbolically represent the possible contents of the store buffers. Its starting point is a program that is correct for the usual sequential consistency memory model, but that might be incorrect under x86-TSO. This program is then analyzed for this relaxed memory model and when errors are found (with respect to safety properties), memory fences are inserted in order to avoid these errors. The approach proceeds iteratively and heuristically, inserting memory fences until correctness is obtained, which is guaranteed to happen. An advantage of our technique is that the underlying symbolic verification tool makes a full exploration possible even for cyclic programs, which makes our approach broadly applicable. The method has been tested with an experimental implementation and can effectively handle a series of classical examples. [less ▲]

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See detailDCD liver transplantation: is donor age an issue?
DETRY, Olivier ULg; Le dinh, Hieu; DE ROOVER, Arnaud ULg et al

in Liver Transplantation (2011, July), 17(6S1), 112

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See detailEstimating daily yield of major fatty acids from single milking: first approach.
Arnould, Valérie ULg; NGuyen, N. H.; Froidmont et al

in Journal of Dairy Science (2011, July), 94(E-Suppl. 1), 29

Reducing the frequency of milk recording and the number of recorded samples per test-day could be a solution in order to reduce costs of milk recording. However, this solution leads to decrease also the ... [more ▼]

Reducing the frequency of milk recording and the number of recorded samples per test-day could be a solution in order to reduce costs of milk recording. However, this solution leads to decrease also the accuracy of predicting daily yield. According to the literature, several authors have already worked on this problematic. Unfortunately, some effects used in previous studies are not often available or reliable in used databases. This study was aimed to enlarge these investigations to milk fatty acids (FA) production: saturated FA, mono-unsaturated FA, unsaturated FA, medium-chain FA, and long chain FA and to propose a simple, robust and practical method for estimating accurate daily major FA yield from single milking. To do this, five dairy cows were followed between January 2007 and December 2010. FA contents were predicted by mid-infrared spectrometry. The final database contained 1,440 records. The first step was to ensure that used effects were available in most used databases. According to the availability of data, height models were tested to estimate daily yields from both morning and evening milking. These models were compared on the basis of the coefficient of determination values between estimated and observed daily yields and the mean square error. The proposed models included progressively several effects such as the milk yield, the fat and protein content, some classes of stage in lactation, of month of test or of month of calving. As expected, R² values were higher when these effects are introduced in the model and were comprised between 0.87 and 0.88 when daily yield were estimated from morning milking, and from 0.75 and 0.86 when daily yield were estimated from evening milking. It was concluded that the introduction of these effects did highly improve the daily predictability of all trait yield and can partially replace the milking interval effect. It was also observed that daily yields estimated from evening milkings are less accurate than those estimated from morning milkings. Finally, the applied model will depend on the availability of the data and to the convenience of the applied model to the studied population. Keywords: Milk recording, Fatty acids, prediction [less ▲]

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See detailRhynchonellid and spiriferid brachiopods as valuable tools for correlation of shelly faunas near the Devonian/Carboniferous boundary
Brice, Denise; Mottequin, Bernard ULg

in Record - Geological Survey of Western Australia (2011, July), 2011/20

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See detailA new methodological approach to try to link past disturbances and modern landscapes
Bourland, Nils ULg; Livingstone Smith, Alexandre; Doucet, Jean-Louis ULg

in Primate Tidings (2011, July), 24

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See detailHomoparental family and its triadic interactions. An exploratory research with the Lausanne Trilogue Play
D'Amore, Salvatore ULg; Scarciotta, Lidia; Miscioscia, Marina ULg

in European Child & Adolescent Psychiatry (2011, June 12)

Various authors like Patterson and Chan (1995) suggest that the psychological evolution of a child who grew up in a homoparental family is not different from that of a child pertaining to other types of ... [more ▼]

Various authors like Patterson and Chan (1995) suggest that the psychological evolution of a child who grew up in a homoparental family is not different from that of a child pertaining to other types of family structures. Literature on family dynamics in homoparental contexts (Vecho & Schneider, 2005; Gross, 2005) shows that only few studies focus on a systematic analysis of interactions. They rather deal with representational and symbolic aspects within the parents-children dyad and use various methodological modalities, the analysis unit being the single person. For this reason it is actually essential to try to understand the child’s development from a triadic point of view that takes into consideration the parental couple and the child (Fivaz-Depeursinge, 2003). The aim of our study is to observe the postnatal family interactions of homoparental families using the Lausanne Trilogue Play paradigm (LTP Fivaz-Depeursinge, 1999). We assume that there are no significant differences regarding the quality of the family triadic interactions. Family alliance appears to be comparable in homoparental and other non-referred family samples. The first results with 15 homoparental families seem to confirm our research hypothesis. These pilot results may turn out to be significant in our ongoing research. [less ▲]

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See detailSommes-nous tous déficitaires en vitamine D?
CAVALIER, Etienne ULg

in Correspondances en MHDN (2011, June 09), 15(6), 191-195

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See detailHTLV-1 clonality during chronic infection and BLV clonality during primary infection
Gillet, N.; Hlela, C.; Verdonck, T. et al

in AIDS Research and Human Retroviruses (2011, June 06), 8(1), 185

HTLV-1 clonality during chronic infection and BLV clonality during primary infection Nicolas A Gillet1,2*, Carol Hlela1, Tine Verdonck3, Eduardo Gotuzzo3, Daniel Clark3, Sabrina Rodriguez2, Nirav Malani4 ... [more ▼]

HTLV-1 clonality during chronic infection and BLV clonality during primary infection Nicolas A Gillet1,2*, Carol Hlela1, Tine Verdonck3, Eduardo Gotuzzo3, Daniel Clark3, Sabrina Rodriguez2, Nirav Malani4, Anat Melamed1, Niall Gormley5, Richard Carter5, David Bentley5, Charles Berry6, Frederic D Bushman4, Graham P Taylor7, Luc Willems2, Charles R M Bangham1 1Department of Immunology, Wright-Fleming Institute, Imperial College London, London, W2 1PG, UK. 2Molecular and Cellular Epigenetics, Interdisciplinary Cluster for Applied Genoproteomics (GIGA) of University of Liège (ULg), Liège, 4000, Belgium. 3Instituto de Medicina Tropical Alexander von Humboldt, Universidad Peruana Cayetano Heredia, Lima, Peru. 4Department of Microbiology, University of Pennsylvania School of Medicine, Pennsylvania, Philadelphia, PA, 19104, USA. 5Illumina, Chesterford Research Park, Essex, Little Chesterford, CB10 1XL, UK. 6University of California, California, La Jolla San Diego, CA, 92093-0901, USA. 7Department of Genitourinary Medicine and Communicable Diseases, Wright-Fleming Institute, Imperial College London, London, W2 1PG, UK. HTLV-1 persists by driving clonal proliferation of infected T-lymphocytes. A high proviral load predisposes to the inflammatory and malignant diseases associated with HTLV-1. Yet the reasons for the remarkable variation within and between individuals in the abundance of HTLV-1-infected clones remain unknown. We demonstrate that negative selection dominates during chronic infection, favouring establishment of proviruses integrated in transcriptionally silenced DNA: this selection is significantly stronger in asymptomatic carriers. We postulated that this selection occurred mainly during the primary infection. We are testing this hypothesis in an animal model by studying the BLV clonality during the primary infection in cows. By measuring the proviral load, the anti-BLV immune response and the BLV clonality we aim to quantify the impact of the immune response on the rate of infectious spread and on the selection of proviruses inserted in a particular genomic environment. Co-infection with Strongyloides stercoralis or Staphylococcus appears to be another risk factor for the development of HTLV-1 associated diseases. We observed that HTLV-1 clonality is altered by co-infection with these pathogens with an increase of both the number and the abundance of the infected T-cell clones. The genomic characteristics of the proviral integration sites in the most abundant clones differ significantly between co-infected individuals and those with HTLV-1 alone, implying the existence of different selection forces in co-infected patients. The rate of appearance of new clones in patients co-infected with Strongyloides stercoralis is higher than in patients with HTLV-1 alone. By comparing skin lesions and blood samples from patients with Infective Dermatitis associated with HTLV-1 (IDH), we observed a significant proportion of distinct infected clones between the two compartments. The skin lesions seem to be a site for HTLV-1 infectious spread. [less ▲]

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See detailNovel drug delivery sytem of siRNA based on chitosan, pegylated chitosan and polyethyleneimine
Ragelle, Héloïse; Vandermeulen, Gaëlle; Riva, Raphaël ULg et al

in Human Gene Therapy (2011, June 06), 22

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See detailA life-attenuated BLV deletant as a candidate vaccine to inhibit viral transmission in bovine herds
Gutiérrez, G.; Rodriguez, Sabrina ULg; Florins, A. et al

in AIDS Research and Human Retroviruses (2011, June 05), 8(1), 12

A life-attenuated BLV deletant as a candidate vaccine to inhibit viral transmission in bovine herds Gerónimo Gutiérrez2*, Sabrina M. Rodríguez1*†, Arnaud Florins3, Lucas Vagnoni2, Irene Alvarez2, Nicolas ... [more ▼]

A life-attenuated BLV deletant as a candidate vaccine to inhibit viral transmission in bovine herds Gerónimo Gutiérrez2*, Sabrina M. Rodríguez1*†, Arnaud Florins3, Lucas Vagnoni2, Irene Alvarez2, Nicolas Gillet3, Karina Trono2‡, Luc Willems1,3‡ *‡S.M. Rodríguez / G. Gutiérrez and K.Trono / L. Willems contributed equally to this work. 1 Molecular and Cellular Epigenetics, Interdisciplinary Cluster for Applied Genoproteomics (GIGA), University of Liège (ULg), Liège (4100), Belgium. 2 Instituto de Virología, CICVyA, Instituto Nacional de Tecnología Agropecuaria, (1712), Castelar, Argentina. 3 Molecular and Cellular Biology, Gembloux Agro-Bio Tech, University of Liège (ULg), Gembloux (5030), Belgium †E-mail: sabrina.rodriguez@ulg.ac.be There are different strategies to reduce BLV prevalence. Eradication by culling of infected animals is not economically sustainable in highly infected regions such as Argentina, US or Japan. Partition and confinement on BLV-infected cows is expensive due to duplication of facilities. Finally, several candidate vaccines based on recombinant viral proteins were unsuccessful to protect from challenge. Facing these failures, we propose a novel strategy based on the use of a live-attenuated BLV provirus. The rationale behind this strategy relies on the deletion of genes required to induce pathogenesis leaving those involved in infectivity, resulting in an attenuated mutant with impaired transmissibility. In a first set of experiments, we show that the mutant is infectious and elicits an efficient immune response in sheep (n=3) and in cows (n=9). Lack of spread to uninfected sentinels further supports the safety of the vaccine. Based on these promising results, a validation program in herd (n=105) is ongoing to evaluate the capacity of the candidate vaccine to protect from wild-type BLV infection. The following experiments are carried out: quantification of the proviral loads, assessment of immune response efficiency (antibody titers, CTL response and cytokine profiling), measure of viral expression in vivo (qRT-PCR) and ex vivo (expression of Tax and p24gag) and determination of provirus clonality during infection. This data will be instrumental for understanding the basic mechanisms undergoing during BLV infection and for elaborating of a novel vaccine. [less ▲]

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See detailLe dossier des ouvrages médicaux attribués à Cléopâtre dans le fonds M.D. Grmek conservé à l'IMEC
Marganne, Marie-Hélène ULg

in Histoire des Sciences Médicales (2011, June), 45(2), 149-154

After describing the dossier of the medical works attributed to Cleopatra in the M.D. Grmek fund deposited at IMEC (Institut Mémoires de l'Édition Contemporaine, Abbaye d'Ardenne, Saint-Germain-la-Blanche ... [more ▼]

After describing the dossier of the medical works attributed to Cleopatra in the M.D. Grmek fund deposited at IMEC (Institut Mémoires de l'Édition Contemporaine, Abbaye d'Ardenne, Saint-Germain-la-Blanche-Herbe, near Caen), this paper reports some recent papyrological discoveries (P. Oxy. 71.4809, third century AD, and P. Berol. inv. 25239, BC 33), as well as some new studies in the field over the past ten years, and presents the project of the Centre de Documentation de Papyrologie Littéraire (CEDOPAL, University of Liège) for an edition of the fragments of Cleopatra's Kosmetikon. [less ▲]

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See detailTrunk muscle profile in tennis players with and without low back pain
GROSDENT, Stéphanie ULg; Demoulin, Christophe ULg; Souchet, Matthieu et al

in Physiotherapy (2011, June), 97

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See detailImpact of Harmonia axyridis (Coleoptera: Coccinellidae) on the survival rates of other aphidophagous species in semi-field conditions
Vandereycken, Axel ULg; Durieux, Delphine ULg; Joie, Emilie ULg et al

in Communications in Agricultural and Applied Biological Sciences (2011, May 24), 76(2), 219-226

The multicoloured Asian ladybird Harmonia axyridis Pallas (Coleoptera: Coccinellidae), previously introduced as a biological control agent against aphids, is now frequently considered as an intraguild ... [more ▼]

The multicoloured Asian ladybird Harmonia axyridis Pallas (Coleoptera: Coccinellidae), previously introduced as a biological control agent against aphids, is now frequently considered as an intraguild predator, consuming other aphid natural enemies. Interactions between this exotic ladybird and other aphidophagous species present in Belgian agro-ecosystems such as Coccinella septempunctata, Episyrphus balteatus and Chrysoperla carnea are asymmetric to the benefit of H. axyridis. This study focuses on the survival rate of three aphidophagous species Harmonia axyridis (Ha), Coccinella septempunctata (C7) and Episyrphus balteatus (Eb) placed in cages in biological fields of potato and sugar beet. During June and July, hermetic cages were disposed on the crops with 10 larvae (second stage) of each aphidophagous. Four types of cages were observed (1) Ha+Eb+C7+ aphids, (2) Ha+Eb+C7, (3) Eb+C7+ aphids and (4) Eb+C7. Each combination was repeated three times. In sugar beet fields, E. balteatus was the species with the highest mortality rate. The two coccinellid species had a better survival rate than E. balteatus. All aphidophagous species had higher mortality rates in absence of aphids. In potato, when aphids were present in excess, the survival rates of all aphidophagous insects were lower than in sugar beet probably because A. fabae is less adapted to the potato morphology. Nevertheless, we have observed in potato no mortality of C. 7-punctata during all its development cycle. This suggests that (1) C. 7-punctata may use aphids as food sources more efficiently than H. axyridis and (2) that interactions between aphidophagous could be less frequent (difficulty of mobility). In potato and sugar beet, H. axyridis had the longest development cycle, being still at the larval stage when C. 7-punctata and E. balteatus reached the pupae stage. We can suppose that pupae of E. balteatus and C. 7-punctata were an alternative food (intraguild prey) to H. axyridis when aphids were lacking. Pupae are immobile and therefore more sensitive to the attack of predators. [less ▲]

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See detailDynamics of black-grass populations depending on the sowing time of winter wheat
Vandersteen, Joëlle; Jaunard, Delphine ULg; Mahy, Grégory ULg et al

in Communications in Agricultural and Applied Biological Sciences (2011, May 24), 76(3), 485-490

Currently, economic, agronomic and environmental concerns, lead to reduce use of herbicides. This reduction can be help by cultural measures like delay of the sowing date. Four sowing dates of winter ... [more ▼]

Currently, economic, agronomic and environmental concerns, lead to reduce use of herbicides. This reduction can be help by cultural measures like delay of the sowing date. Four sowing dates of winter wheat from 15th of October to 26th of November were tested. Dynamic of black-grass populations and their reproduction rate were assessed as well as dynamic of winter wheat for each date. Delay of sowing could significantly reduce reproduction rate of blac-grass. It was shwn that the emergence rate (pl/m²), but also number of ears per plant and number of seeds per ear of black-grass decreased significantly with the sowing date. This reproduction of seeds productioin already is from sixty per cent of a delay of two weeks sowing. [less ▲]

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See detailViabilité pour le Siemens ECAT EXACT HR+ du test de stabilité des tomographes TEP élaboré par la société belge des physiciens d'hôpitaux
Seret, Alain ULg; Dalemans, Christophe ULg; Nguyen, Daniel ULg et al

in Médecine Nucléaire : Imagerie Fonctionnelle et Métabolique (2011, May 07), 35

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See detailPotentialités quantitatives et qualité d'image de la camera TEMP/TDM Siemens Symbia T6
Seret, Alain ULg; Nguyen, Daniel ULg; HUSTINX, Roland ULg et al

in Médecine Nucléaire : Imagerie Fonctionnelle et Métabolique (2011, May 07), 35

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See detailImportance des inhibiteurs de la thyrosine kinase
BOSQUEE, Léon ULg

in Vaisseaux, Coeur, Poumons [=VCP] (2011, May 01)

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See detailLittérature et bases de données : le cas de la base de données du CIEL
Dozo, Björn-Olav ULg

in Cahiers de l'Association Internationale des Etudes Françaises [=CAIEF] (2011, May), 63

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See detailFilter failure analysis for the SWAP instrument on-board of PROBA2
Jonckheere, Stijn; Bergen, Bart; Halain, Jean-Philippe ULg et al

in COMPDYN (2011, May)

During its intensive testing campaign, SWAP (Sun Watcher using Active Pixel System detector and image Processing), an optical instrument developed by Centre Spatiale de Liege (CSL) and mounted onto the ... [more ▼]

During its intensive testing campaign, SWAP (Sun Watcher using Active Pixel System detector and image Processing), an optical instrument developed by Centre Spatiale de Liege (CSL) and mounted onto the Belgian satellite PROBA2, was subjected to a multitude of load cases to verify the integrity of the instrument during and after the launch and during the operational phase. The front and rear filters of SWAP, 200 nm thin films, survived intensive vibration tests on the qualification model and acceptance tests on the flight model, both at an instrument level. During the acoustic test on the spacecraft, the front filter exploded while the rear one was undamaged. A new, strengthened filter, coated with a very fine metal mesh was mounted in the instrument. However, this new filter has less good optical properties due to optical diffraction. Therefore a profound analysis of the filter failure is necessary to provide the best possible optical accuracy for future missions with similar equipment. Three load cases are further studied in this paper: the acceleration of the rocket, the instrument depressurisation and the vibro-acoustic behaviour under the large sound and vibration levels. The acceleration and depressurisation are studied together in a two-level computational fluid dynamics (CFD) analysis to assess the effect of the venting of the instrument on the differential pressure over the filter. The main focus of this paper is on a numerical vibro-acoustic analysis, following the procedures used by CSL and ESTEC (European Space Research and Technology Centre). This analysis needs special attention because of the presence of a stochastic excitation (diffuse field) and the very nonlinear behaviour of the filter itself due to its small thickness. Also, an additional postprocessing step based on filter displacements, rather than differential pressure, as done in the ESTEC procedure, is discussed. [less ▲]

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See detailMolecular dissection of the color-sided phenotype in cattle reveals a novel mechanism of chromosome evolution involving circular shuttling intermediates.
Durkin, Keith ULg; Cambisano, Nadine ULg; Ahariz, Naïma ULg et al

in Chromosome Research : An International Journal on the Molecular, Supramolecular and Evolutionary Aspects of Chromosome Biology (2011, May), 19(S1), 18

The color-sided (Cs) phenotype is a dominant coat color pattern segregating in several breeds including Belgian Blue Cattle (BBC) and Brown Swiss (BS). A genome-wide association study performed in BBC ... [more ▼]

The color-sided (Cs) phenotype is a dominant coat color pattern segregating in several breeds including Belgian Blue Cattle (BBC) and Brown Swiss (BS). A genome-wide association study performed in BBC unambiguously positioned the Cs locus on chromo- some 29 (BTA29); however, SNP arrays and CGH detected an equally perfectly associated <480 kb duplication encompassing the KIT gene on chromo- some 6 (BTA6). FISH analysis reconciled these results by revealing an intrachromosomal duplication, which transposed a fragment of BTA6 to BTA29. The organization of the duplicated segment, including breakpoint definition, was determined by high-throughput resequencing and revealed that the transpo- sition occurred via a circular intermediate. The trans- posed KIT copy was shown to be transcriptionally competent, suggesting that dominant color-sidedness results from dysregulated expression of KIT. Similar analyses of the color-sided phenotype conducted in BS revealed linkage on BTA6, a <120- kb-BTA6 duplication (which overlaps with the BBC duplication), and a <414-kb-BTA29 duplication adja- cent to the BTA29 breakpoint defined in BBC. FISH analysis showed the duplicated portion of BTA29 was located on BTA6 and adjacent to the KIT gene. SNP genotyping indicated that the BTA6 and BTA29 haplotypes associated with color-sidedness in BS and BBC were near identical, demonstrating the non-independence of the two chromosomal events. High-throughput resequencing of a color-sided BS animal defined the corresponding breakpoints and suggests that the BS Cs allele is derived from the BBC duplication [less ▲]

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See detailVitamin D: clinical relevance, analytical issues
CAVALIER, Etienne ULg

in Clinical Chemistry & Laboratory Medicine (2011, May), 49(s1), 66

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See detailFatty acids and cardiovascular risk
LE GOFF, Caroline ULg; Leroy, Ludovic; Kaux, Jean-François ULg et al

in Clinical Chemistry & Laboratory Medicine (2011, May), 49(Special Suppl), 313

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See detailElevation of cardiac and oxidative stress biomarkers after a running activity in sedentary subjects
LE GOFF, Caroline ULg; Bury, Thierry ULg; Rodriguez de la Cruz, Carlos ULg et al

in Clinical Chemistry & Laboratory Medicine (2011, May), 49(Special Suppl), 313

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See detailManagement effects on net ecosystem carbon and GHG budgets at European crop sites
Ceschia, Eric; Béziat, Pierre; Dejoux, Jean-François et al

in Geophysical Research Abstracts (2011, April 08), 13

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See detailCarbon balance of crops: overview of 7 years of investigation
Moureaux, Christine ULg; Dufranne, Delphine ULg; Suleau, Marie ULg et al

in Geophysical Research Abstracts (2011, April 08), 13

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See detailO2/Ar and CH4 measurements in sea ice : clues for the key status of sea ice in the climate system
Zhou, Jiayun; Tison, Jean-Louis; Eicken, Hajo et al

in Geophysical Research Abstracts (2011, April 08), 13

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See detailModeling soil heterotrophic respiration with an enzyme-based model: first comparison with field data and suggestions of improvements
Buysse, Pauline ULg; Longdoz, Bernard; Debacq, Alain ULg et al

in Geophysical Research Abstracts (2011, April 07), 13

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See detailMeasurement and modeling of methanol deposition/emission in a mixed forest
Laffineur, Quentin ULg; Heinesch, Bernard ULg; Amelynck, Crist et al

in Geophysical Research Abstracts (2011, April 07), 13

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See detailMultilayer Analysis of Soil Respiration and its Isotopic Signature in Forest Ecosystem
Goffin, Stéphanie ULg; Longdoz, Bernard; Maier, Martin et al

in Geophysical Research Abstracts (2011, April 06), 13

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See detailOn the impact of ionospheric variability and disturbances on GNSS-based positioning applications
Stankov, Stanimir; Wautelet, Gilles ULg; Lejeune, Sandrine et al

in Geophysical Research Abstracts (2011, April), 13(ABS. No EGU2011-12067),

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See detailInsulin-like growth factor 1 (IGF-1) promotes interleukin 7 (IL-7) synthesis and secretion by primary cultures of human thymic epithelial cells
Goffinet, Lindsay ULg; Renard-Charlet, Chantal; Martens, Henri ULg et al

in Scandinavian Journal of Immunology (2011, April), 73

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See detailWhat do physicians expect from clinical pharmacists ?
Gerard, Xavier ULg; Van Hees, Thierry ULg

in International Journal of Clinical Pharmacy [=IJCP] (2011, April), 33(2), 418

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See detailPreliminary characterisation of a transgenic mouse with selective Igf2 depletion in the thymic epithelium
Mottet, Marie ULg; Martens, Henri ULg; Renard-Charlet, Chantal et al

in Scandinavian Journal of Immunology (2011, April)

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See detailLearning from positive and unlabeled examples by enforcing statistical significance
Geurts, Pierre ULg

in JMLR: Workshop and Conference Proceedings (2011, April), 15

Given a finite but large set of objects de- scribed by a vector of features, only a small subset of which have been labeled as ‘positive’ with respect to a class of interest, we consider the problem of ... [more ▼]

Given a finite but large set of objects de- scribed by a vector of features, only a small subset of which have been labeled as ‘positive’ with respect to a class of interest, we consider the problem of characterizing the positive class. We formalize this as the problem of learning a feature based score function that minimizes the p-value of a non parametric statistical hypothesis test. For lin- ear score functions over the original feature space or over one of its kernelized versions, we provide a solution of this problem computed by a one-class SVM applied on a surrogate dataset obtained by sampling subsets of the overall set of objects and representing them by their average feature-vector shifted by the average feature-vector of the original sample of positive examples. We carry out experiments with this method on the prediction of targets of transcription factors in two different organisms, E. Coli and S. Cererevisiae. Our method extends enrichment analysis commonly carried out in Bioinformatics and its results outperform common solutions to this problem. [less ▲]

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See detailDREAM 2020: Development of laparoscopic surgery and endoscopy in the university hospital of Kinshasa, DRC
Nsadi, Berthier; Veyi, D.; Kazadi, J. et al

in Acta Gastro-Enterologica Belgica (2011, March), 74(1), 14

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See detailStable precision over time when assessing the cartilage loss on knee osteoarthritis radiograph
DEROISY, Rita ULg; Bruyère, Olivier ULg; Reginster, Jean-Yves ULg

in Osteoporosis International (2011, March), 22(Suppl.1), 42-43246

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See detailDonation after Cardiac Death increases the number of liver grafts for liver transplantation
Ledinh, H.; HANS, Marie-France ULg; MONARD, Josée ULg et al

in Acta Gastro-Enterologica Belgica (2011, March), 74(1), 10

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See detailStrontium ranelate increases cell viability in IL-1 beta stimulated human chondrocytes
Merville, Marie-Paule ULg; Deroyer, Céline ULg; Bruyère, Olivier ULg et al

in Osteoporosis International (2011, March), 22(Suppl.1), 53-54384

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See detailLaparoscopic liver resection: monocentric university experience
Szecel, D.; ARENAS SANCHEZ, Maria Mara ULg; DE ROOVER, Arnaud ULg et al

in Acta Gastro-Enterologica Belgica (2011, March), 74(1), 30

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See detailRelationship between changes in bone mineral density or bone turnover markers and vertebral fracture incidence in patients treated with Bazedoxifene
Bruyère, Olivier ULg; Detilleux, Johann ULg; Chines, Arkadi et al

in Osteoporosis International (2011, March), 22(Suppl.1), 324

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See detailIncidence of hip fracture in Belgium between 2000 and 2007 and future projections
Hiligsmann, Mickaël ULg; Bruyère, Olivier ULg; Detilleux, Johann ULg et al

in Osteoporosis International (2011, March), 22(Suppl.1), 145

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See detailOutcome of patients with hepatocellular carcinoma listed for liver transplantation before and after the MELD-based allocation system within Eurotransplant. A BElgian multicentre retrospective study.
Vos, B.; Rogge, S.; Nevens, F. et al

in Acta Gastro-Enterologica Belgica (2011, March), 74(1), 13

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See detailEnhanced insulin sensitivity variability in the first 3 days of ICU stay: Implications for TGC
Chase, J. Geoffrey; Le Compte, Aaron; Penning, Sophie ULg et al

in Critical Care (2011, March)

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See detailValidation of a virtual patient and virtual trials method for accurate prediction of TGC protocol performance
Suhaimi, Fatanah; Le Compte, Aaron; Penning, Sophie ULg et al

in Critical Care (2011, March)

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See detailAre patients with HBV and HCV infection different? Comparison between 2 cohorts of newly diagnosed cases included in prospective registries of the Belgian Association for the Study of the Liver
De Vroey, B.; Moreno, C.; Laleman, W. et al

in Acta Gastro-Enterologica Belgica (2011, March), 74(1), 21

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See detailPatient out-of-pocket contributions related to hip fracture hospital costs in Belgium
Hiligsmann, Mickaël ULg; Gathon, Henry-Jean ULg; Bruyère, Olivier ULg et al

in Osteoporosis International (2011, March), 22(Suppl.1), 333

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See detailProtecting men and women from fracture
Reginster, Jean-Yves ULg

in Osteoporosis International (2011, March), 22(Suppl.1), 413-414

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See detailMost Effective Interventions to Improve Patient Compliance with Osteoporosis Medications
Hiligsmann, Mickaël ULg; Salas, M.; Hughes, D. A. et al

in Osteoporosis International (2011, March), 22(Suppl 1), 335

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See detailFive-year Denosumab treatment of postmenopausal women with osteoporosis: results from the first two years of the freedom trial extension
Papapoulos, S.; Man, Z.; Mellstrom, D. et al

in Osteoporosis International (2011, March), 22(Suppl.1), 107-108

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See detailAntifracture efficacy and safety of once-yearly Zoledronic acid 5mg in men with osteoporosis: a prospective, randomized, controlled trial
Boonen, Steven; Su, Guoqin; Incera, Elodie et al

in Osteoporosis International (2011, March), 22(Suppl.1), 112

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See detailHospitalisation costs of hip fractures in Belgium
Hiligsmann, Mickaël ULg; Gathon, Henry-Jean ULg; Bruyère, Olivier ULg et al

in Osteoporosis International (2011, March), 22(Suppl.1), 332

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See detailThe true clinical relevance of crystalline glucosamine sulphate in the treatment of knee osteoarthritis
Reginster, Jean-Yves ULg

in Osteoporosis International (2011, March), 22(Suppl.1), 410

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See detailCost-effectiveness of Denosumab compared with generic alendronate in the treatment of postmenopausal osteoporotic women
Hiligsmann, Mickaël ULg; Reginster, Jean-Yves ULg

in Osteoporosis International (2011, March), 22(Suppl.1), 112-113

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See detail’Spontaneous Revolution” in Tunisia. Yearnings for Freedom, Justice, and Dignity
Nachi, Mohamed ULg

in The Institute Letter. Institute for Advanced Study (2011, March), (Spring), 8-19

Reflexion about the Tunisian revolution

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See detailEvolution over a 15 year period of the epidemiological profile of 2884 newly diagnosed HCV patients in Belgium.
LOLY, Jean ULg; GERARD, Christiane ULg; VAIRA, Dolorès ULg et al

in Acta Gastro-Enterologica Belgica (2011, March), 74

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See detailRisk of hip fracture in community-dwelling and institutionalized osteoporotic patients: a 3-year study
Bruyère, Olivier ULg; Hiligsmann, Mickaël ULg; Zegels, Brigitte ULg et al

in Osteoporosis International (2011, March), 22(Suppl.1), 332-333

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See detailLong-term efficacy and safety of strontium ranelate in postmenopausal osteoporotic women: results over 10 years
Reginster, Jean-Yves ULg; Kaufman, Jean-Marc; Devogelaer, Jean-Pierre et al

in Osteoporosis International (2011, March), 22(Suppl.1), 110-111

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See detailFinding Routing Shortcuts using an Internet Coordinate System
Cantin, François ULg; Leduc, Guy ULg

in Lecture Notes in Computer Science (2011, February 23), 6557

Overlay routing is a promising way to improve the quality of service in the Internet but its main drawback is scalability: measuring the characteristics of the paths, exchanging the measurement results ... [more ▼]

Overlay routing is a promising way to improve the quality of service in the Internet but its main drawback is scalability: measuring the characteristics of the paths, exchanging the measurement results between the nodes and computing the best routes in the full mesh overlay network generally imply a high consumption of resources. In this paper, we design the basis of a lightweight self-organising one-hop overlay routing mechanism improving the latencies: we define criteria that rely on the information provided by an Internet Coordinate System (ICS) in order to provide a small set of potential one-hop shortcuts for any given path in the network with a small measurement cost. Our best criterion does not guarantee to find the best shortcut for any given path in a network but, even in networks with hundreds or thousands of nodes, it will restrict the search for potential shortcuts to about one or two percent of the total number of nodes. [less ▲]

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See detailThe WASP-South search for transiting exoplanets
Hellier, C.; Anderson, D. R.; Collier Cameron, A. et al

in EPJ Web of Conferences (2011, February 01), 11

Since 2006 WASP-South has been scanning the Southern sky for transiting exoplanets. Combined with Geneva Observatory radial velocities we have so far found over 30 transiting exoplanets around relatively ... [more ▼]

Since 2006 WASP-South has been scanning the Southern sky for transiting exoplanets. Combined with Geneva Observatory radial velocities we have so far found over 30 transiting exoplanets around relatively bright stars of magnitude 9-13. We present a status report for this ongoing survey. [less ▲]

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See detailTRAPPIST: a robotic telescope dedicated to the study of planetary systems
Gillon, Michaël ULg; Jehin, Emmanuel ULg; Magain, Pierre ULg et al

in EPJ Web of Conferences (2011, February 01), 11

We present here a new robotic telescope called TRAPPIST<xref ref-type="fn" rid="FN2">1</xref> (TRAnsiting Planets and PlanetesImals Small Telescope). Equipped with a high-quality CCD camera mounted on a 0 ... [more ▼]

We present here a new robotic telescope called TRAPPIST<xref ref-type="fn" rid="FN2">1</xref> (TRAnsiting Planets and PlanetesImals Small Telescope). Equipped with a high-quality CCD camera mounted on a 0.6 meter light weight optical tube, TRAPPIST has been installed in April 2010 at the ESO La Silla Observatory (Chile), and is now beginning its scientific program. The science goal of TRAPPIST is the study of planetary systems through two approaches: the detection and study of exoplanets, and the study of comets. We describe here the objectives of the project, the hardware, and we present some of the first results obtained during the commissioning phase. [less ▲]

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See detailLIVER TRANSPLANTATION FOR ACUTE HEPATIC FAILURE DUE TO CHEMOTHERAPY-INDUCED HEPATITIS B VIRUS REACTIVATION IN LYMPHOMA PATIENTS
Noterdaeme, T.; Longree, L.; Bataille, C. et al

in Transplant International (2011, February), 24(1), 10-10

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See detailEFFECTS OF LARGE PORE HEMOFILTRATION IN A SWINE MODEL OF FULMINANT HEPATIC FAILURE
DETRY, Olivier ULg; JANSSEN, Nathalie ULg; CHERAMY-BIEN, Jean-Paul ULg et al

in Transplant International (2011, February), 24(1), 10-10

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See detailPlatelet-rich plasma (PRP) and tendon healing: animal model
Kaux, Jean-François ULg; Drion, Pierre ULg; Renouf, Julien et al

in British Journal of Sports Medicine (2011, February), 45(2), 1

Introduction: The tendon is a tissue which does not heal easily. Recently, several studies have demonstrated the positive effects of platelets on the healing process of tendons. A local injection of ... [more ▼]

Introduction: The tendon is a tissue which does not heal easily. Recently, several studies have demonstrated the positive effects of platelets on the healing process of tendons. A local injection of platelet–rich plasma (PRP), which releases in situ many growth factors, has the potentiality to enhance the tendon healing process. The aim of our experiment was to ascertain by an original mechanical measure whether the use of PRP was of interest for accelerating the healing process of rats’ Achilles tendons after surgical induced lesion. Methods: A 5mm defect was surgically induced in 90 rats’ Achilles tendon. Rats were divided into 2 groups of 45: (A) control (no treatment) and (B) PRP treatment. Rats of group B received a PRP injection in situ after the surgery. Afterwards, rats of both groups were placed in their cages without immobilization. After 5, 15 and 30 days, 10 traumatized Achilles tendons of each group were dissected and removed. Immediately after sampling, tendons were submitted to a biomechanical tensile test up to rupture, using a “Cryo-jaw”. After that, transcriptomic analyses were made on the tendon samples, to study the expression of type III collagen, matrix metalloproteases and tenomodulin. A hydroxyproline dosage was done to quantify the collagen in the tendon during its healing process. Tendons of the 15 remaining rats of each group were subjected to a histological study, respectively at day 5, 15 and 30 (5 rats for each time). Results: We demonstrated that the force necessary to induce tendon rupture during biomechanical tensile test study was greater for tendons which had been submitted to an injection of PRP compared to the control group: +19% (day 5), +30% (day 15) and +43% (day 30). Histological study showed that PRP could enhance cells proliferation, angiogenesis and collagen organisation. Our biochemical analyses did not explain beneficial effects of PRP. Indeed, there was no significant difference neither between the expression of different studied genes, nor in the quantity of hydroxyproline between both groups. Conclusion: This experimentation has shown that a PRP injection could accelerate the tendons healing process and improve its quality. [less ▲]

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See detailFATAL SMALL FOR SIZE SYNDROME AFTER RIGHT LOBE DONATION
DETRY, Olivier ULg; DE ROOVER, Arnaud ULg; LAUWICK, Séverine ULg et al

in Transplant International (2011, February), 24(1), 8-8

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See detailLearning to rank with extremely randomized trees
Geurts, Pierre ULg; Louppe, Gilles ULg

in JMLR: Workshop and Conference Proceedings (2011, January), 14

In this paper, we report on our experiments on the Yahoo! Labs Learning to Rank challenge organized in the context of the 23rd International Conference of Machine Learning (ICML 2010). We competed in both ... [more ▼]

In this paper, we report on our experiments on the Yahoo! Labs Learning to Rank challenge organized in the context of the 23rd International Conference of Machine Learning (ICML 2010). We competed in both the learning to rank and the transfer learning tracks of the challenge with several tree-based ensemble methods, including Tree Bagging, Random Forests, and Extremely Randomized Trees. Our methods ranked 10th in the first track and 4th in the second track. Although not at the very top of the ranking, our results show that ensembles of randomized trees are quite competitive for the “learning to rank” problem. The paper also analyzes computing times of our algorithms and presents some post-challenge experiments with transfer learning methods. [less ▲]

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See detailQuestionnement agroécologique: les systèmes participatifs de garantie comme critique de la certification et nouveau mode de gouvernance?
Stassart, Pierre M ULg; Brandenburg, Alfio; Isaguirre, Katya

in SFER Online http://www.sfer.asso.fr/les_colloques2/les_transversalites_de_l_agriculture_biologique/programme_actes_du_colloque (2011)

Ce papier propose un questionnement agroécologique sur la transition agroécologique comme un processus de réflexivité de second ordre. Nous construisons cette hypothèse en prenant le cas de l’émergence ... [more ▼]

Ce papier propose un questionnement agroécologique sur la transition agroécologique comme un processus de réflexivité de second ordre. Nous construisons cette hypothèse en prenant le cas de l’émergence des Systèmes Participatif de Garantie (SPG) au Brésil comme une critique de la certification déléguée à une tierce partie et une proposition alternative de gouvernance face au contrôle de conformité marchand. Nous prenons en particulier le cas d’Ecovida et de sa certification participative qui est à l’origine des SPG brésiliennes. Le statut de notre communication est prospectif : après avoir précisé ce que nous entendons par réflexivité, nous posons une série de questions qui portent à la fois sur l’apprentissage et la réflexivité de cette expérience#!Cette mise à l’épreuve nous intéresse dans la mesure où elle peut nous informer sur ce que peuvent devenir des modes de gouvernance réflexifs dans le monde de la bio. [less ▲]

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See detailLes billes alginate-chitosane : un nouveau biomatériau pour la réparation des lésions du cartilage
Oprenyeszk, Frédéric ULg; Sanchez, Christelle ULg; Dubuc, Jean-Emile et al

in Revue du Rhumatisme (2011), 78(suppl 5), 129-130

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See detailDihadron fragmentation functions and their relevance for transverse spin studies
Courtoy, Aurore ULg; Bacchetta, A.; Radici, M.

in Journal of Physics: Conference Series (2011), 295(1),

Dihadron fragmentation functions describe the probability that a quark fragments into two hadrons plus other undetected hadrons. In particular, the so-called interference fragmentation functions describe ... [more ▼]

Dihadron fragmentation functions describe the probability that a quark fragments into two hadrons plus other undetected hadrons. In particular, the so-called interference fragmentation functions describe the azimuthal asymmetry of the dihadron distribution when the quark is transversely polarized. They can be used as tools to probe the quark transversity distribution in the nucleon. Recent studies on unpolarized and polarized dihadron fragmentation functions are presented, and we discuss their role in giving insights into transverse spin distributions. [less ▲]

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See detailImpact of chronic graft-versus-host disease (GVHD) after reduced intensity conditioning (RIC) allogeneic stem cell transplantation (allo-SCT) as treatment for acute myeloid leukemia (AML) : a survey from the Acute Leukemia Working Party of the EBMT
Baron, Frédéric ULg; Labopin, Myriam; Niederwieser, Dietger et al

in Blood (2011), 118

The goal of RIC allo-SCT is to harness the graft-versus-leukemia (GVL) effect, while minimizing toxicities and the risk of GVHD. However, prior studies have shown a lower risk of relapse in AML patients ... [more ▼]

The goal of RIC allo-SCT is to harness the graft-versus-leukemia (GVL) effect, while minimizing toxicities and the risk of GVHD. However, prior studies have shown a lower risk of relapse in AML patients (pts) who experienced chronic GVHD after RIC allo-SCT versus in those who did not. Here, we investigated the impact of occurrence of GVHD on transplantation outcomes in a large cohort of AML pts given allogeneic PBSC after RIC conditioning. Data from 1859 AML pts in first (n=1439) or second (n=420) CR transplanted between 2000 and 2009 following a RIC regimen at EBMT affiliated centres were analyzed. Pts were given PBSC from HLA-identical sibling (MRD, n=1208), or from HLA-matched unrelated donors (MUD, n=651). Median pt age at transplantation was 56 y (range, 18–77). 338 male pts were given grafts from female donors. RIC was based on low-dose TBI in 520 (28%) pts, while the remaining pts received chemotherapy-based RIC. ATG was given in 269 (22%) MRD and in 267 (41%) MUD recipients, respectively, while 151 (13%) MRD and 165 (25%) MUD recipients received in-vivo T cell depletion with alemtuzumab. The impact of chronic GVHD on relapse risk, non-relapse mortality (NRM), leukemia-free survival (LFS), and overall survival (OS) was assessed using time-dependent multivariate Cox models and in a landmark analysis at 18 months after transplant. Three-year incidences of relapse, NRM, LFS and OS were 34±1%, 15±1%, 51±2% and 60±2% in MRD recipients, respectively, and 34±2% (p=NS), 24±2% (P<0.001), 42±2% (P=0.001) and 47±2% (P=0.001) in MUD recipients, respectively. Grade II, III and IV acute GVHD were observed in 133 (11%), 61 (5%) and 30 (2%) MRD recipients and in 119 (18%), 41 (6%) and 24 (4%) MUD recipients, respectively. The 3-y cumulative incidence of chronic GVHD was 47%. Fifty-three percent of patients with chronic GVHD had extensive chronic GVHD, while the remaining 47% had limited chronic GVHD. In multivariate analyses, occurrence of grade II-IV acute GVHD was associated with a lower risk of relapse (HR=0.8; P=0.04), a higher risk of chronic (HR=2.2; P<0.001) and extensive chronic GVHD (HR=2.8; P<0.001), a higher risk of NRM (HR=2.4 P<0.001), a worsened LFS (HR=1.3; P=0.01), and a worsened OS (HR=1.5; P<0.001). In multivariate time-dependent analyses, occurrence of limited chronic GVHD was associated with a lower risk of relapse (HR=0.7; P=0.05), comparable NRM (HR=1.4; P=0.16), comparable LFS (HR=0.9; P=0.29) and better OS (HR=0.5; P<0.001), while occurrence of extensive chronic GVHD was associated with a lower risk of relapse (HR=0.6; P=0.01), higher NRM (HR=3.2; P<0.001), a trend for worsened LFS (HR=1.3; P=0.06) and comparable OS (HR=0.9; P=0.34). The median interval from transplantation to occurrence of chronic GVHD was 163 (range, 100–1545) days. To further assess the graft-versus-leukemia effect of chronic GVHD, we performed a landmark analysis in patients who were leukemia-free at 18 months after transplantation (n=776). Median follow-up from this landmark time-point was 24 (range, 0.1–112) months. Two-year relapse, NRM, LFS and OS were 16±2%, 2.5±1%, 82±2%, and 89±2%, respectively, in patients without chronic GVHD before the landmark time-point, versus 9±1% (P=0.001), 8±1% (P<0.001), 83±2% (P=0.65), and 86±2% (P=0.38), respectively, in patients with chronic GVHD before the landmark time-point.In conclusion, in this cohort of AML patients transplanted in remission, occurrence of chronic GVHD was associated with a lower risk of relapse that translated to better OS in patients with limited chronic GVHD but not in those with extensive chronic GVHD who experienced higher long term NRM, highlighting the need for long term prospective assessment of long term effects and quality of life in patients receiving RIC allo-SCT. [less ▲]

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See detailSpallation modeling- What's new on nuclei production with INCL4.5-Abla07?
David, J-C; Boudard, A; Cugnon, Joseph ULg et al

in Memorie della Società Astronomica Italiana (2011), 82(2), 909-912

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See detailExtension of the long-term total column time series of atmospheric methane above the Jungfraujoch station: analysis of grating infrared spectra between 1976 and 1989
Bader, Whitney ULg; Lejeune, Bernard ULg; Demoulin, Philippe ULg et al

in Geophysical Research Abstracts (2011), 13

Methane (CH4) is one of the most abundant greenhouse gases in the Earth’s atmosphere, with current mean volume mixing ratio close to 1800 ppb. Since methane has a global warming potential of 25 (100-yr ... [more ▼]

Methane (CH4) is one of the most abundant greenhouse gases in the Earth’s atmosphere, with current mean volume mixing ratio close to 1800 ppb. Since methane has a global warming potential of 25 (100-yr horizon) and an atmospheric lifetime of 12 years, the Kyoto Protocol has included it among the species to be regulated to limit global warming. Anthropogenic sources of methane are mainly energy production (coal and leaks) and agriculture while main natural sources are swamps and biomass waste. The main sink of methane is oxidation in the troposphere, primarily by reaction with the hydroxyl radical. Methane trends have exhibited significant changes during the last twenty-five years. For instance, long-term monitoring of its vertical total column above the high-altitude station of the Jungfraujoch (46.5°N, 8°E, 3580 m asl) has indeed allowed to derive column changes ranging from +0.72% in 1987-1988 to +0.14% in 1999-2000 (Zander et al., 2002), relative to 1988 and 2000, respectively. More recently and for the same site, Duchatelet et al. (2010) have even reported a significant slowdown of -0.02%/yr between years 2000 and 2005. This study also showed that since then, CH4 is on the rise again, at a rate close to +0.30%/yr. While the numbers reported here above have been derived from the Fourier Transform Infrared (FTIR) data set starting in 1984, earlier pioneering observations have been collected at the Jungfraujoch since 1950, using grating spectrometers. During the 1958-1975 period, the main objectives has been the study of the solar photosphere in the visible and the near infrared and the publication of high-resolution solar atlases. From 1976 to 1989, narrow-band IR solar absorption observations achieving a spectral resolution of about 0.02 cm-1 have been recorded with the high-performance double-pass grating spectrometer. Analysis of these historical spectra provides a unique opportunity to extend the Jungfraujoch’s total column time series of important atmospheric gases, including methane, by nearly 10 years. The aim of this contribution is to present the inversion strategy adopted to derive CH4 from the grating spectra, using the SFIT-2 algorithm (v3.91) We will evaluate the impact of resolution, spectroscopic parameters (from the EU HYMN project -see www.knmi.nl/samen/hymn-, and from HITRAN 2004), atmospheric pressure and temperature profiles on the error budget. The 1976-1989 total column time series produced will be presented and critically discussed. In particular, we will identify and correct for possible biases between double-pass grating spectrometer measurements and more recent FTIR total columns. The harmonized and consolidated time series will be investigated to characterize the long-term trend of methane for the 1976-2010 time period. Comparisons with synthetic data produced by the CHASER 3-dimensional chemical transport model will also be presented and analyzed. [less ▲]

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See detailDramatic reduction of postnatal growth restriction after optimizing nutrition in very low birth weight infants.
SENTERRE, Thibault ULg; Rigo, J

in Pediatric Research (2011), 70(S5), 71

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See detailDramatic reduction of postnatal growth restriction after optimizing nutrition in extremely preterm infants
SENTERRE, Thibault ULg; Rigo, J

in Intensive Care Medicine (2011), 37(S2), 397

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See detailL’interleukine-1β augmente le catabolisme de la fibuline-3 par les chondrocytes : démonstration in vitro par la mesure des fragments Fib3-1 et Fib3-2
Gharbi, Myriam; Legrand, Catherine; Sanchez, Christelle ULg et al

in Revue du Rhumatisme (2011), 78(suppl 5), 131-132

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See detailThe impact of blue light on non-visual brain functions changes with age
Daneault*; Vandewalle*, Gilles ULg; Hébert, M et al

in NeuroImage (2011), 56(Suppl. 1),

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See detailAging affects the impact of light on non-visual cognitive brain functions
Vandewalle, Gilles ULg; Daneault, V.; Hébert., M. et al

in Sleep (2011), 34(Suppl. 1),

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See detailNew Results in Exclusive Hard Reactions
Pire, Bernard; Semenov-Tyan-Shanskiy, Kirill ULg; Szymanowski, Lech et al

in PoS - Proceedings of Science (2011), EPS-HEP2011

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See detailOral salt supplementation and long-distance exercise
Lehance, Cédric ULg; Rodriguez de la Cruz, Carlos ULg; Counet, Laurence ULg et al

in British Journal of Sports Medicine (2011), 45

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See detailLocal stability results for the collective behaviors of infinite populations of pulse-coupled oscillators
Mauroy, Alexandre ULg; Sepulchre, Rodolphe ULg

in Proceedings of the IEEE Conference on Decision and Control (2011)

In this paper, we investigate the behavior of pulse-coupled integrate-and-fire oscillators. Because the stability analysis of finite populations is intricate, we investigate stability results in the ... [more ▼]

In this paper, we investigate the behavior of pulse-coupled integrate-and-fire oscillators. Because the stability analysis of finite populations is intricate, we investigate stability results in the approximation of infinite populations. In addition to recovering known stability results of finite populations, we also obtain new stability results for infinite populations. In particular, under a weak coupling assumption, we solve for the continuum model a conjecture still prevailing in the finite dimensional case. © 2011 IEEE. [less ▲]

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See detailQuels enseignements tirer des données de délinquance auto-révélées ?
Gavray, Claire ULg

in Observatoire : Revue d'Action Sociale & Médico-Sociale les actes + (2011)

Les données de délinquance juvénile nous obligent à contrer le discours alarmiste, tout en ne banalisant pas les problèmes vécus/causés par une minorité de jeunes qui sont bien pris dans la spirale de la ... [more ▼]

Les données de délinquance juvénile nous obligent à contrer le discours alarmiste, tout en ne banalisant pas les problèmes vécus/causés par une minorité de jeunes qui sont bien pris dans la spirale de la délinquance, comme victime et comme auteur... [less ▲]

Detailed reference viewed: 125 (18 ULg)