565 research outputs found
Sprachstandardisierung unter Mehrsprachigkeitsbedingungen. Das Deutsche in Luxemburg im 19. Jahrhundert
Der Beitrag beschreibt die Grundstruktur des Forschungsprojekts ‚Standardization in Diversity (SDiv). The case of German in Luxembourg 1795–1920‘, das im Zeitraum 2013–2016 vom Fonds National de la Recherche (Luxemburg) und der DFG gefördert wird. Weitere Informationen auf der Internetseite des Projekts unter http://infolux.uni.lu/standardization
Feedback between erosion and active deformation: geomorphic constraints from the frontal Jura fold-and-thrust belt (eastern France)
A regional tectono-geomorphic analysis indicates a Pliocene to recent rock uplift of the outermost segment of the Jura fold-and-thrust belt, which spatially coincides with the intra-continental Rhine-Bresse Transfer Zone. Elevated remnants of the partly eroded Middle Pliocene Sundgau-Forêt de Chaux Gravels identified by heavy mineral analyses allow for a paleo-topographic reconstruction that yields minimum regional Latest Pliocene to recent rock uplift rates of 0.05±0.02mm/year. This uplift also affected the Pleistocene evolution of the Ognon and Doubs drainage basins and is interpreted as being tectonically controlled. While the Ognon River was deflected from the uplifted region the Doubs deeply incised into it. Focused incision of the Doubs possibly sustained ongoing deformation along anticlines which were initiated during the Neogene evolution of the thin-skinned Jura fold-and-thrust belt. At present, this erosion-related active deformation is taking place synchronously with thick-skinned tectonics, controlling the inversion of the Rhine-Bresse Transfer Zone. This suggests local decoupling between seismogenic basement faulting and erosion-related deformation of the Mesozoic cover sequence
FP174INTRAVITAL MULTIPHOTON KIDNEY IMAGING USING A CUSTOM DESIGNED MICROSCOPE AND EXTENDED WAVELENGTH EXCITATION LASER
Oligocene and early Miocene mammal biostratigraphy of the Valley of Lakes in Mongolia
The Taatsiin Gol Basin in Mongolia is a key area for understanding the evolution and dispersal of Central Asian mammal faunas during the Oligocene and early Miocene. After two decades of intense fieldwork, the area is extraordinarily well sampled and taxonomically well studied, yielding a large dataset of 19,042 specimens from 60 samples. The specimens represent 176 species-level and 99 genus-level taxa comprising 135 small mammal species and 47 large mammals. A detailed lithostratigraphy and new magnetostratigraphic and radiometric datings provide an excellent frame for these biotic data. Therefore, we test and evaluate the informal biozonation scheme that has been traditionally used for biostratigraphic correlations within the basin. Based on the analysis of the huge dataset, a formalised biostratigraphic scheme is proposed. It comprises the Cricetops dormitor Taxon Range Zone (Rupelian), subdivided into the Allosminthus khandae Taxon Range Subzone and the Huangomys frequens Abundance Subzone, the Amphechinus taatsiingolensis Abundance Zone (early Chattian), the Amphechinus major Taxon Range Zone (late Chattian), subdivided into the Yindirtemys deflexus Abundance Subzone and the Upper Amphechinus major T. R. Z., and the Tachyoryctoides kokonorensis Taxon Range Zone (Aquitanian). In statistical analyses, samples attributed to these biozones form distinct clusters, indicating that each biozone was also characterised by a distinct faunal type
Ionization Quenching Factor measurement of 1 keV to 25 keV protons in Isobutane gas mixture
A primary culture system of mouse thick ascending limb cells with preserved function and uromodulin processing
The epithelial cells lining the thick ascending limb (TAL) of the loop of Henle perform essential transport processes and secrete uromodulin, the most abundant protein in normal urine. The lack of differentiated cell culture systems has hampered studies of TAL functions. Here, we report a method to generate differentiated primary cultures of TAL cells, developed from microdissected tubules obtained in mouse kidneys. The TAL tubules cultured on permeable filters formed polarized confluent monolayers in ∼12days. The TAL cells remain differentiated and express functional markers such as uromodulin, NKCC2, and ROMK at the apical membrane. Electrophysiological measurements on primary TAL monolayers showed a lumen-positive transepithelial potential (+9.4 ± 0.8mV/cm2) and transepithelial resistance similar to that recorded in vivo. The transepithelial potential is abolished by apical bumetanide and in primary cultures obtained from ROMK knockout mice. The processing, maturation and apical secretion of uromodulin by primary TAL cells is identical to that observed in vivo. The primary TAL cells respond appropriately to hypoxia, hypertonicity, and stimulation by desmopressin, and they can be transfected. The establishment of this primary culture system will allow the investigation of TAL cells obtained from genetically modified mouse models, providing a critical tool for understanding the role of that segment in health and disease
Optical, vibrational, thermal, electrical, damage and phase-matching properties of lithium thioindate
Lithium thioindate (LiInS) is a new nonlinear chalcogenide biaxial
material transparent from 0.4 to 12 m, that has been successfully grown in
large sizes and good optical quality. We report on new physical properties that
are relevant for laser and nonlinear optics applications. With respect to
AgGaS(e) ternary chalcopyrite materials, LiInS displays a
nearly-isotropic thermal expansion behavior, a 5-times larger thermal
conductivity associated with high optical damage thresholds, and an extremely
low intensity-dependent absorption allowing direct high-power downconversion
from the near-IR to the deep mid-IR. Continuous-wave difference-frequency
generation (5-11m) of Ti:sapphire laser sources is reported for the first
time.Comment: 27 pages, 21 figures. Replaces the previous preprint
(physics/0307082) with the final version as it will be published in J. Opt.
Soc. Am. B 21(11) (Nov. 2004 issue
Connaissance, perception et définition du concept « Patient Partenaire de Soins » : Qu’en pensent les acteurs impliqués en éducation thérapeutique ? Résultats d’une enquête nationale
peer reviewe
Evolution of Oligo-Miocene talpids (Mammalia, Talpidae) in Europe: focus on the genera Myxomygale
Smart Phone, Smart Science: How the Use of Smartphones Can Revolutionize Research in Cognitive Science
Investigating human cognitive faculties such as language, attention, and memory most often relies on testing small and homogeneous groups of volunteers coming to research facilities where they are asked to participate in behavioral experiments. We show that this limitation and sampling bias can be overcome by using smartphone technology to collect data in cognitive science experiments from thousands of subjects from all over the world. This mass coordinated use of smartphones creates a novel and powerful scientific “instrument” that yields the data necessary to test universal theories of cognition. This increase in power represents a potential revolution in cognitive science
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