Jacqueline Harfouche's Quick Files

The Quick Files feature was discontinued and it’s files were migrated into this Project on March 11, 2022. The file URL’s will still resolve properly, and the Quick Files logs are available in the Project’s Recent Activity

Parental burnout in Lebanon: Validation psychometric properties of the Lebanese Arabic version of the Parental Burnout Assessment

This study — the first study on parental burnout in an Arabic speaking country in the Middle East — aimed to examine the psychometric properties of the Lebanese translation of the Parental Burnout Assessment (PBA-Lebanese). The PBA-Lebanese was administered to 200 Lebanese parents (67% mothers). The results showed parental burnout is a valid construct relevant to Lebanese culture. In particular, we replicated the original four-factor structure of the PBA and we tested a second order factor structure through confirmatory factor analysis. The first and second order factor model fitted the data, and reliability indexes were high (α = .97 for exhaustion, .95 for contrast, .92 for feelings of being fed up, .80 for emotional distancing and .98 for the global score). There was no significant gender difference in the prevalence of parental burnout, but mean levels were higher in mothers than in fathers. Both less educated parents and single parents reported higher parental burnout, pointing to the possible role of education and social relations as protective factors for Lebanese parents

Long cold exposure induces transcriptional and biochemical remodelling of xylem secondary cell wall in Eucalyptus

International audienceAlthough eucalypts are the most planted hardwood trees worldwide, the majority of them are frost sensitive. The recent creation of frost-tolerant hybrids such as Eucalyptus gundal plants (E. gunnii × E. dalrympleana hybrids), now enables the development of industrial plantations in northern countries. Our objective was to evaluate the impact of cold on the wood structure and composition of these hybrids, and on the biosynthetic and regulatory processes controlling their secondary cell-wall (SCW) formation. We used an integrated approach combining histology, biochemical characterization and transcriptomic profiling as well as gene coexpression analyses to investigate xylem tissues from Eucalyptus hybrids exposed to cold conditions. Chilling temperatures triggered the deposition of thicker and more lignified xylem cell walls as well as regulation at the transcriptional level of SCW genes. Most genes involved in lignin biosynthesis, except those specifically dedicated to syringyl unit biosynthesis, were up-regulated. The construction of a co-expression network enabled the identification of both known and potential new SCW transcription factors, induced by cold stress. These regulators at the crossroads between cold signalling and SCW formation are promising candidates for functional studies since they may contribute to the tolerance of E. gunnii × E. dalrympleana hybrids to cold

Économie et société de la fin de la Préhistoire : Actualité de la recherche

Les 7e Rencontres méridionales de Préhistoire récente, tenues à Bron, sur le campus de l'Université Lumière-Lyon 2, les 3 et 4 novembre 2006, ont réuni plus de 150 préhistoriens venus du Sud de la France et des régions alentour. Ces Rencontres biennales représentent le lien majeur de la communauté des chercheurs pour les périodes allant du Mésolithique à l'Âge du Bronze dans la moitié sud de la France. Les Actes présentés ici regroupent 24 contributions réparties en deux sections : l'actualité de la recherche, présentant les principaux résultats des fouilles et programmes récents, et le thème spécifique choisi pour cette session « Économie et société à la fin de la Préhistoire ». Cette thématique large est abordée au fil de 9 contributions très ciblées portant sur les économies de subsistance, de production et d'échange ainsi que sur l'analyse de structures immobilières qui en témoignent, où l'on voit que l'idéel et le matériel ne sont jamais très éloignés dans ces sociétés du passé