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See detailReeducacion del Hombro
Forthomme, Bénédicte ULg

Book published by Editorial Paidotribo (2007)

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See detailKarsts des craies et calcarénites de la Montagne Saint-Pierre (Basse Meuse liégeoise)
Willems, Luc; Rodet, Joël; Ek, Camille ULg et al

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

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See detailOrientation and Order of Self-Assembled p-Benzenedimethanethiol Films on Pt(111) Obtained by Direct Adsorption and via Alkanethiol Displacement
Silien, Christophe; Dreesen, Laurent ULg; Cecchet, Francesca et al

in Journal of Physical Chemistry C: Nanomaterials, Interfaces, and Hard Matter (2007), 111

Self-assembly of p-benzenedimethanethiol (p-BDMT) on Pt(111) has been investigated by high-resolution electron energy loss spectroscopy and sum-frequency generation spectroscopy. The molecules adsorb on ... [more ▼]

Self-assembly of p-benzenedimethanethiol (p-BDMT) on Pt(111) has been investigated by high-resolution electron energy loss spectroscopy and sum-frequency generation spectroscopy. The molecules adsorb on Pt-(111) like on gold, attached through one single thiol, leaving the second thiol moiety unreacted and exposed to the outer surface. Yet, the order of the p-BDMT self-assembled film is poor in comparison to alkanethiol SAMs. Displacement in solution of a preadsorbed pentanethiol (PTT) SAM by p-BDMT molecules proved to be a successful approach to achieve films of higher quality, where the size of the dithiol molecular domains tends toward the size measured for PTT. Nearly complete exchange is accomplished after 42 h. However, no significant exchange is observed when dodecanethiol replaces PTT. Displacing the alkanethiols by benzenethiol leads to the same conclusions, suggesting that the exchange processes are lessened as compared to gold. [less ▲]

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See detailThe Computation of Equating Errors in International Surveys in Education
Monseur, Christian ULg; Berezner, Alla

in Journal of Applied Measurement (2007), 8(3), 323-35

Since the IEA's Third International Mathematics and Science Study, one of the major objectives of international surveys in education has been to report trends in achievement. The names of the two current ... [more ▼]

Since the IEA's Third International Mathematics and Science Study, one of the major objectives of international surveys in education has been to report trends in achievement. The names of the two current IEA surveys reflect this growing interest: Trends in International Mathematics and Science Study (TIMSS) and Progress in International Reading Literacy Study (PIRLS). Similarly a central concern of the OECD's PISA is with trends in outcomes over time. To facilitate trend analyses these studies link their tests using common item equating in conjunction with item response modelling methods. IEA and PISA policies differ in terms of reporting the error associated with trends. In IEA surveys, the standard errors of the trend estimates do not include the uncertainty associated with the linking step while PISA does include a linking error component in the standard errors of trend estimates. In other words, PISA implicitly acknowledges that trend estimates partly depend on the selected common items, while the IEA's surveys do not recognise this source of error. Failing to recognise the linking error leads to an underestimation of the standard errors and thus increases the Type I error rate, thereby resulting in reporting of significant changes in achievement when in fact these are not significant. The growing interest of policy makers in trend indicators and the impact of the evaluation of educational reforms appear to be incompatible with such underestimation. However, the procedure implemented by PISA raises a few issues about the underlying assumptions for the computation of the equating error. After a brief introduction, this paper will describe the procedure PISA implemented to compute the linking error. The underlying assumptions of this procedure will then be discussed. Finally an alternative method based on replication techniques will be presented, based on a simulation study and then applied to the PISA 2000 data. [less ▲]

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See detailThree arginine to cysteine substitutions in the pro-alpha (I)-collagen chain cause Ehlers-Danlos syndrome with a propensity to arterial rupture in early adulthood.
Malfait, Fransiska; Symoens, Sofie; De Backer, Julie et al

in Human Mutation (2007), 28(4), 387-95

Mutations in the COL1A1 and COL1A2 genes, encoding the proalpha1 and 2 chains of type I collagen, cause osteogenesis imperfecta (OI) or Ehlers-Danlos syndrome (EDS) arthrochalasis type. Although the ... [more ▼]

Mutations in the COL1A1 and COL1A2 genes, encoding the proalpha1 and 2 chains of type I collagen, cause osteogenesis imperfecta (OI) or Ehlers-Danlos syndrome (EDS) arthrochalasis type. Although the majority of missense mutations in the collagen type I triple helix affect glycine residues in the Gly-Xaa-Yaa repeat, few nonglycine substitutions have been reported. Two arginine-to-cysteine substitutions in the alpha1(I)-collagen chain are associated with classic EDS [R134C (p.R312C)] or autosomal dominant Caffey disease with mild EDS features [R836C (p.R1014C)]. Here we show alpha1(I) R-to-C substitutions in three unrelated patients who developed iliac or femoral dissection in early adulthood. In addition, manifestations of classic EDS in Patient 1 [c.1053C>T; R134C (p.R312C); X-position] or osteopenia in Patients 2 [c.1839C>T; R396C (p.R574C); Y-position] and 3 [c.3396C>T; R915C (p.R1093C); Y-position] are seen. Dermal fibroblasts from the patients produced disulfide-bonded alpha1(I)-dimers in approximately 20% of type I collagen, which were efficiently secreted into the medium in case of the R396C and R915C substitution. Theoretical stability calculations of the collagen type I heterotrimer and thermal denaturation curves of monomeric mutant alpha1(I)-collagen chains showed minor destabilization of the collagen helix. However, dimers were shown to be highly unstable. The R134C and R396C caused delayed procollagen processing by N-proteinase. Ultrastructural findings showed collagen fibrils with variable diameter and irregular interfibrillar spaces, suggesting disturbed collagen fibrillogenesis. Our findings demonstrate that R-to-C substitutions in the alpha1(I) chain may result in a phenotype with propensity to arterial rupture in early adulthood. This broadens the phenotypic range of nonglycine substitutions in collagen type I and has important implications for genetic counseling and follow-up of patients carrying this type of mutation. [less ▲]

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See detailRelevance of active faulting and seismicity studies to assessments of long-term earthquake activity and maximum magnitude in intraplate northwest Europe, between the Lower Rhine Embayment and the North Sea
Camelbeeck, Thierry; Vanneste, Kris; Alexandre, Pierre ULg et al

in Stein, S.; Mazzotti, S. (Eds.) Continental Intraplate Earthquakes: Science, Hazard and Policy Issues (2007)

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See detailPolymeric nanomaterials – synthesis, functionalization and applications in diagnosis and therapy
Rieger, Jutta ULg; Jérôme, Christine ULg; Jérôme, Robert ULg et al

in Kumar, Challa (Ed.) Nanomaterials for Medical Diagnosis and Therapy (2007)

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See detailEstrus synchronization, artificial insemination, and pregnancy diagnosis in water buffaloes (Bubalus bubalis)
Hanh, NV; Huu, QX; Uoc, NT et al

in Reproduction, Fertility and Development (2007), 19(1), 198

One of the big obstacles in management of reproductive activity in water buffaloes is their silent estrus. This characteristic prevents the determination of time for artificial insemination (AI ... [more ▼]

One of the big obstacles in management of reproductive activity in water buffaloes is their silent estrus. This characteristic prevents the determination of time for artificial insemination (AI), resulting in lengthening of the calving interval (Nguyen et al. 1990 Proc. FAO Workshop, Bulgaria, 210–216). Pregnancy-associated glycoprotein (PAG) measurement in maternal blood is an effective method of early pregnancy diagnosis in ruminant species (Zoli et al. 1992 Biol. Reprod. 46, 83–92). The present study describes a preliminary attempt to improve buffalo reproductive performance by association of three different approaches: synchronization of estrus by hormonal treatment, followed by two AI, and finally pregnancy diagnosis based on PAG measurements. A total of 33 buffalo females (4 to 15 years old), with no apparent estrus during a period of 9 to 36 months after last calving, were used. Each female received 2 injections of 5 mL of PGF2α (Intervet, France) 10 days apart (Day -12 and Day -2), one injection of 500 IU of PMSG (SABC, Vietnam) at Day -5, and 1000 IU of hCG (Intervet, France) on the day of AI (Day 0). A second AI was performed 8 h after hCG injection. Blood samples (9 mL) were collected from each female at Days 20, 25, 40, and 45 after AI. Blood samples were withdrawn by jugular venipuncture (heparinized Vacutainer tubes) and kept in a cool box until centrifugation (500g, 10 min). Plasma samples were stored at -20°C until assayed for PAG. Pregnancy diagnosis was considered negative, doubtful, or positive according to the PAG concentrations (<0.6 ng mL-1, 0.6 to 0.8 ng mL-1, and >0.8 ng mL-1, respectively). Clinical observation of females after insemination showed that the total rate of animals that exhibited signs of estrus until Day 45 was 9.1% (3/33). These 3 females were not considered for pregnancy diagnosis. Table 1 shows the results of pregnancy diagnosis in 30 water buffalo females. These results show that fertilization is easily obtained after estrus synchronization in buffaloes and that measurement of PAG concentrations in maternal plasma can be used for pregnancy diagnosis from Day 40 after AI. [less ▲]

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See detailSouvenirs de Babel. La reconstruction de l'histoire des langues de la Renaissance aux Lumières
Droixhe, Daniel ULg

Book published by Académie royale de langue et de littérature françaises de Belgique (2007)

La question, voire le mythe de l'origine des langues, formulée dans de multiples récits et hypothèses, est un ensemble conjecturel qui méritait qu'on l'aborde de manière panoramique et objective. C'est ce ... [more ▼]

La question, voire le mythe de l'origine des langues, formulée dans de multiples récits et hypothèses, est un ensemble conjecturel qui méritait qu'on l'aborde de manière panoramique et objective. C'est ce qu'entreprend Daniel Droixhe dans son essai Souvenirs de Babel, très richement documenté et audacieusement conçu. Cette publication est le premier des ouvrages inédits que l'ARLLFB compte désormais proposer au public sur son site. Une innovation frappée au sceau de l'originalité et de la hardiesse de l'investigation philologique. – Jacques De Decker, Secrétaire perpétuel de l'Académie royale de langue et de littérature françaises de Belgique [less ▲]

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See detailMicro-entreprises in rural areas : redeployment of rurality in Walloon Region
Brulard, Cécile; Burny, Philippe ULg; Dogot, Thomas ULg et al

in 18th European Seminar on Extension Education "Supporting viable rural communities" : proceedings, September 2007 (2007)

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See detailUse of Essential Oils of Aromatic Plants as Protectant of Grains During Storage
Ngamo, Tinkeu S.L.; Ngassoum, Martin B.; Mapongmestsem, Pierre M. et al

in Agricultural Journal (2007), 2(2), 204-209

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See detailL'assiette du Belge en chiffres
Duquesne, Brigitte ULg

Poster (2007)

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See detailStabilization and structure of telomeric and c-myc region intramolecular G-quadruplexes: The role of central cations and small planar ligands
Gabelica, Valérie ULg; Baker, Erin Shammel; Teulade-Fichou, Marie-Paule et al

in Journal of the American Chemical Society (2007), 129(4), 895-904

A promising approach for anticancer strategies is the stabilization of telomeric DNA into a G-quadruplex structure. To explore the intrinsic stabilization of folded G-quadruplexes, we combined ... [more ▼]

A promising approach for anticancer strategies is the stabilization of telomeric DNA into a G-quadruplex structure. To explore the intrinsic stabilization of folded G-quadruplexes, we combined electrospray ionization mass spectrometry, ion mobility spectrometry, and molecular modeling studies to study different DNA sequences known to form quadruplexes. Two telomeric DNA sequences of different lengths and two DNA sequences derived from the NHE III1 region of the c-myc oncogene (Pu22 and Pu27) were studied. NH4+ and the ligands PIPER, TMPyP4, and the three quinacridines MMQ1, MMQ3, and BOQ1 were complexed with the DNA sequences to determine their effect on the stability of the G-quadruplexes. Our results demonstrate that G-quadruplex intramolecular folds are stabilized by NH4+ cations and the ligands listed. Furthermore, the ligands can be classified according to their ability to stabilize the quadruplexes and end stacking is shown to be the dominant mode for ligand attachment. In all cases our solvent-free experimental observations and theoretical modeling reveal structures that are highly relevant to the solution-phase structures. [less ▲]

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See detailWeak ferromagnetism in Fe1-xCoxSb2
Hu, Rongwei; Hermann, Raphaël ULg; Grandjean, François-Xavier ULg et al

in Physical Review b (2007), 76(22),

Weak ferromagnetism in Fe1-xCoxSb2 is studied by magnetization and Mossbauer measurements. A small spontaneous magnetic moment of the order of similar to 10(-3)mu(B) appears along the b axis for 0.2 <= x ... [more ▼]

Weak ferromagnetism in Fe1-xCoxSb2 is studied by magnetization and Mossbauer measurements. A small spontaneous magnetic moment of the order of similar to 10(-3)mu(B) appears along the b axis for 0.2 <= x <= 0.4. Based on a structural analysis, we argue against extrinsic sources of weak ferromagnetism. We discuss our results in the framework of the nearly magnetic electronic structure of the parent compound FeSb2. [less ▲]

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See detailLa situation économique de la culture des céréales en Belgique
Burny, Philippe ULg

Conference (2007)

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See detailDiagnostic differentiel du syndrome "piro-like" chez les équidés
Sandersen, Charlotte ULg; Amory, Hélène ULg

in Bulletin des Journées Nationales des GTV (2007)

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See detailClinical differentiation of malignant catarrhal fever, mucosal disease and bluetongue.
Bexiga, R.; Guyot, Hugues ULg; Saegerman, Claude ULg et al

in Veterinary Record : Journal of the British Veterinary Association (2007), 161(25), 858-9

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See detailFirst Steps Towards Georeferencing of 3D VHR Optical and X-Band SAR Imagery
Belmonte, Antonella; De Rauw, Dominique ULg; Barbier, Christian ULg et al

in Proc. IGARSS'07 Symposium (2007)

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