100,538 research outputs found
Totally Ramified Maximal Tori and Bruhat-Tits theory
No full textSuppose is a nonarchimedean local field, is a maximally unramified extension of , and is a connected reductive -group. If is a -minisotropic maximal -torus in , then we use Bruhat-Tits theory to describe the stable classes in the -orbit of , the rational classes in the -orbit of , and the -embeddings, up to rational conjugacy, into of . We also provide, via Bruhat-Tits theory, a complete and explicit description of: the rational conjugacy classes of -minisotropic maximal tame -tori in ; the stable classes of -minisotropic maximal tame -tori in ; and the -embeddings, up to rational conjugacy, into of a -minisotropic maximal tame -torus of .Comments welcome! Appendices by Ram Ekstrom and Mitya Boyarchenko, Stephen DeBacker, Anna Spice, Loren Spice, and Cheng-Chiang Tsai. Version two includes some new results and correction
Letter, [Author unclear] to Paulina T. Merritt
No full textHandwritten letter to Paulina Merritt from an unknown author, October 1, 1876.
The supposed thrust fault in the Dyle-Thyle outcrop area (southern Brabant Massif, Belgium) re-interpreted as a folded low-angle extensional detachment
No full textSince 1943 the anomalous contact in the Dyle-Thyle area between the Lower Cambrian Tubize Formation and older deposits, on the one hand, and the Upper Cambrian Mousty Formation and younger deposits, on the other hand, has been interpreted as a gently N-dipping, large-displacement thrust, the Orne-Noirmont-Baudecet thrust. The irregular fault trace and the presence of a supposed klippe at Court-St.-Etienne are both ascribed to the very gentle fault dip. However, a review of outcrop, borehole and geophysical data shows that there are no convincing arguments for such a gently N-dipping thrust. An alternative model is proposed in which the Orne-Noirmont-Baudecet fault is considered a pre-cleavage and pre-folding low-angle extensional detachment, similar to the Asquempont fault sensu Debacker in the Senne-Sennette area. The irregular subcrop trace of the Orne-Noirmont-Baudecet fault is attributed to the strongly variable fold orientations, associated with a transition zone between steeply plunging and gently plunging folds, similar to what has recently been described in the Senne-Sennette area. Although also this model remains speculative, it is the only model which successfully combines all the data from the Dyle-Thyle area and which is compatible also with the structural architecture of other outcrop and subcrop areas of the Brabant Massif.info:eu-repo/semantics/publishe
Handwritten biographical information on Paulina T. McClung Merritt
No full textA handwritten biography of Paulina T. McClung Merritt by an unknown author, 1892.
Heterogeneous and tissue-specific regulation of effector T cell responses by IFN-gamma during Plasmodium berghei ANKA infection.
No full textIFN-γ and T cells are both required for the development of experimental cerebral malaria during Plasmodium berghei ANKA infection. Surprisingly, however, the role of IFN-γ in shaping the effector CD4(+) and CD8(+) T cell response during this infection has not been examined in detail. To address this, we have compared the effector T cell responses in wild-type and IFN-γ(-/-) mice during P. berghei ANKA infection. The expansion of splenic CD4(+) and CD8(+) T cells during P. berghei ANKA infection was unaffected by the absence of IFN-γ, but the contraction phase of the T cell response was significantly attenuated. Splenic T cell activation and effector function were essentially normal in IFN-γ(-/-) mice; however, the migration to, and accumulation of, effector CD4(+) and CD8(+) T cells in the lung, liver, and brain was altered in IFN-γ(-/-) mice. Interestingly, activation and accumulation of T cells in various nonlymphoid organs was differently affected by lack of IFN-γ, suggesting that IFN-γ influences T cell effector function to varying levels in different anatomical locations. Importantly, control of splenic T cell numbers during P. berghei ANKA infection depended on active IFN-γ-dependent environmental signals--leading to T cell apoptosis--rather than upon intrinsic alterations in T cell programming. To our knowledge, this is the first study to fully investigate the role of IFN-γ in modulating T cell function during P. berghei ANKA infection and reveals that IFN-γ is required for efficient contraction of the pool of activated T cells
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
On the use of magnetic techniques for stratigraphic purposes: examples from the Lower Palaeozoic Anglo-Brabant Deformation Belt (Belgium)
No full textWithin the Lower Palaeozoic Anglo-Brabant Deformation Belt, magnetic susceptibility on its own does not allow for a straightforward distinction between different lithostratigraphic units, except for the high-susceptibility levels of the Lower Cambrian Tubize Formation. Moreover, the variation in magnetic susceptibility within individual lithostratigraphic units is often larger than that between different units, but at the same time, this internal variation in susceptibility may show no clear relationship to features obvious in outcrop or hand specimens. Hence, the applicability of magnetic susceptibility for stratigraphic purposes in the Anglo-Brabant Deformation Belt is low. Better results are obtained using the temperature-dependent variation in terms of percentage of magnetic susceptibility within the "room temperature interval". Also the anisotropy of magnetic susceptibility allows for a better distinction between different lithostratigraphic units than does magnetic susceptibility. The best results are obtained by a comparison of thermal demagnetisation curves of magnetic remanence, used for determining ferromagnetic mineralogy. This method even allows distinguishing lithostratigraphic units in which ferromagnetic carriers do not contribute to overall magnetic susceptibility and its anisotropy. Ideally, each magnetic technique should be used for stratigraphic purposes only in combination with other magnetic techniques. Moreover, knowledge about the magnetic carriers (s.l.) facilitates this use of magnetic techniques and strongly improves the accuracy of the interpretations.sponsorship: We would like to thank F. Martin-Hernandez and O. Averbush for thoroughly reviewing the manuscript. We are very grateful to A. Flirt (ETH, Zurich, Switzerland) for the additional magnetic analyses by means of the Curie Balance and to C. Aubourg for the stimulating discussions on ferromagnetic mineralogy. We would also like to acknowledge A. Herbosch for pointing out the unexpected lithology at Braine-le-Chateau. T.N. Debacker is a Postdoctoral Fellow of the Research Foundation-Flanders (F.W.O.-Vlaanderen). This work forms part of research project G.0271.05 of the F.W.O.-Vlaanderen. The handheld magnetic susceptibility meter was obtained by means of extra research funds given by the F.W.O.-Vlaanderen to T. Debacker. (F.W.O.-Vlaanderen|G.0271.05)status: Publishe
Pelevin’s Trinity in the novel “t”: author – protagonist – reader
No full textThe article attempts to interpret Pelevin's artistic strategy in the novel "T" by exploring its subject organization and addressing the key problems of the author, the protagonist, and the reader as they are seen by the researcher. The article analyzes the peculiarities of constructing the narrative reality in the novel "T", and goes on to discuss Pelevin's philosophic models of the development of the humankind, and the emergence of his new anthropology
Measuring industry-science links through inventor-author relations: A profiling method
No full textIn this pilot study we examine the performance of text-based profiling in recovering a set of validated inventor-author links. In a first step we match patents and publications solely based on their similarity in content. Next, we compare inventor and author names on the highest ranked matches for the occurrence of name matches. Finally, we compare these candidate matches with the names listed in a validated set of inventor-author names. Our text-based profile methodology performs significantly better than a random matching of patents and publications, suggesting that text-based profiling is a valuable complementary tool to the name searches used in previous studies.innovation; industry-science links; text-based profiling;
Wave turbulence of a rotating array of quantized vortices in the T → 0 temperature limit
No full textThe dynamics of quantized vortices in the zero temperature limit is currently of great interest, particularly in the case of the Fermi superfluid He-B. Here we study wave turbulence, generated by the librating motion of a rotating cylindrical container filled with He-B, in the limit of vanishing viscous forces at temperatures . The polarization of the quantized vortices with respect to the axis of rotation is measured using non-invasive NMR techniques. We observe a decrease of the polarization when the librating motion is started, and a two-stage relaxation process when the modulation of the rotation velocity is stopped. The first relaxation process is associated with the dissipation of large-scale flow stored in inertial waves and the solid body rotation of the vortex array. From the decay of these energy reservoirs we determine the rate of energy dissipation of large-scale flow. The later second process is related to the relaxation of Kelvin waves on individual vortices. This process is monitored by the recovery of the polarization. The existence of a Kelvin wave cascade at the lowest temperatures is currently a central open question. We supply some evidence for the cascade
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