Search results for "LYN"
showing 10 items of 910 documents
Potentiel bioarchéologique de l’analyse des micro‐fossiles non‐polliniques : résultats préliminaires issus de deux opérations d’archéologie préventive
2019
International audience; Les micro‐fossiles non polliniques (MNP) constituent un vaste groupe de bioindicateurs (propagules ou forme de résistance, entre autres) issus de différents organismes (champignons, algues, plancton, bactérie, animaux, végétaux etc.). Si leur analyse est désormais fréquente dans les études palynologiques menées dans les milieux naturels (lacs ou zones humides), les MNP sont encore peu exploités en contexte archéologique. Leur potentiel bioarchéologique reste à évaluer mais l’enjeu est grand tant les informations qu’ils peuvent apporter sont nombreuses aussi bien sur le plan paléoenvironnemental que paléoécologique, géoarchéologique ou taphonomique. L’éventail de site…
Gestion des ressources naturelles dans le Pays de Tulle : impacts paysagers et histoire du châtaignier (Castanea sativa Mill.) de l'Antiquité à la Re…
2013
Este artículo presenta los resultados paleoambientales de los primeros análisis palinolójicos y sedimentológicos llevados a cabo en el area de Tulle (Mars, Gimel-les-Cascades, Corrèze, Francia). Se basan en la comparación de distintos indicadores bióticos (polen, microfósiles no polínicos) y sedimentarios y en la realización de 9 dataciones radiocarbónicas. Esta investigación establece datos inéditos sobre las dinámicas paisajísticas desde la Antigüedad y sus factores de control tanto climáticos como antrópicos. También analiza de que manera estos cambios paisajísticos pueden significar el desarrollo de sistemas de uso diversificados de los recursos vegetales como el cultivo del castaño (Ca…
Formation of microbial organic carbonates during the Late Jurassic from the Northern Tethys (Amu Darya Basin, Uzbekistan): implications for Jurassic …
2020
23 pages; International audience; The Late Jurassic was a period of major global carbon cycle perturbations with episodes of anoxia leading to regional accumulation of organic matter in sediments worldwide. The Tubiegatan section (SW Gissar Mountains, Uzbekistan) located in the Northern Tethys, shows atypical organic-rich limestone and marl deposits (up to 6% of total organic carbon) marked by pronounced negative excursions of δ13Ccarb (amplitude of ca. 12‰) and δ13Corg (amplitude of ca. 4‰) recorded during the Middle Oxfordian (Transversarium Zone). A transdisciplinary approach including sedimentology, palynofacies characterization, mineralogy, organic and inorganic geochemistry was carrie…
Systemic circulating microRNA landscape in Lynch syndrome
2022
AbstractMicroRNAs (miRs) are non-coding RNA-molecules that regulate gene expression. Global circulating miR (c-miR) expression patterns (c-miRnome) change with carcinogenesis in various sporadic cancers. Therefore, aberrantly expressed c-miRs could have diagnostic, predictive and prognostic potential in molecular profiling of cancers. c-miR functions in carriers of inherited pathogenic mismatch-repair gene variants (path_MMR), also known as Lynch syndrome (LS), have remained understudied. LS cohort provides an ideal population for biomarker mining due to increased lifelong cancer risk and excessive cancer occurrence. Using high-throughput sequencing and bioinformatic approaches, we conducte…
Binding abilities of polyaminocyclodextrins: polarimetric investigations and biological assays.
2017
Three polyaminocyclodextrin materials, obtained by direct reaction between heptakis(6-deoxy-6-iodo)-β-cyclodextrin and the proper linear polyamines, were investigated for their binding properties, in order to assess their potential applications in biological systems, such as vectors for simultaneous drug and gene cellular uptake or alternatively for the protection of macromolecules. In particular, we exploited polarimetry to test their interaction with some model p-nitroaniline derivatives, chosen as probe guests. The data obtained indicate that binding inside the host cavity is mainly affected by interplay between Coulomb interactions and conformational restraints. Moreover, simultaneous i…
Recovering a variable exponent
2021
We consider an inverse problem of recovering the non-linearity in the one dimensional variable exponent $p(x)$-Laplace equation from the Dirichlet-to-Neumann map. The variable exponent can be recovered up to the natural obstruction of rearrangements. The main technique is using the properties of a moment problem after reducing the inverse problem to determining a function from its $L^p$-norms.
The Bishop-Phelps-Bollobás property for bilinear forms and polynomials
2014
For a $\sigma$-finite measure $\mu$ and a Banach space $Y$ we study the Bishop-Phelps-Bollobás property (BPBP) for bilinear forms on $L_1(\mu)\times Y$, that is, a (continuous) bilinear form on $L_1(\mu)\times Y$ almost attaining its norm at $(f_0,y_0)$ can be approximated by bilinear forms attaining their norms at unit vectors close to $(f_0,y_0)$. In case that $Y$ is an Asplund space we characterize the Banach spaces $Y$ satisfying this property. We also exhibit some class of bilinear forms for which the BPBP does not hold, though the set of norm attaining bilinear forms in that class is dense.
Matriisin Hessenbergin muoto
2013
Differential effects of perceptions of equal, favourable and unfavourable autonomy support on educational and well-being outcomes
2019
Abstract In this study, we examined whether high-school students experienced optimal educational and well-being outcomes when they perceived that they and their classmates received an equal, rather than unequal, and high amount of autonomy support from teachers. In a prospective study that aimed to predict academic grades and well-being outcomes, surface analyses of polynomial regression equations pointed that perceptions of equal autonomy support were the most optimal in terms of yielding highest levels of need satisfaction, autonomous forms of motivation and happiness with math courses. Additionally, in accordance with tenets of self-determination theory, we demonstrated that effects asso…
La plaine de la Tille (Côte-d’Or, Bourgogne), du Néolithique à l’Antiquité. Étude pluridisciplinaire du remplissage de struc tures archéologiques en …
2013
National audience; À l’occasion des récentes fouilles archéologiques réalisées dans la plaine de la Tille, au sud-est de Dijon (Bourgogne), une approche luridisciplinaire croisant micromorphologie, palynologie et paléoparasitologie, a été mise en oeuvre. Son objet était d’exploiter au mieux les informations piégées dans le remplissage de structures creusées entre le Néolithique moyen et l’Antiquité, sachant que ces structures constituentsouvent les seuls vestiges de ces occupations passées. Les premiers résultats de cette approche permettent de discuter différents points touchant aux modalités d’occupation et à la dynamique environnementale.