999 resultados para 124-770A
Resumo:
Estudio de la obra dramática de Manuel Andújar dividido en tres partes. En la primera se revisa el estado de la cuestión y se establece el repertorio de textos. La segunda, con el criterio ordenador de fecha de publicación, es el análisis de cada obra, destacando los aspectos más notables. La tercera expone algunos rasgos generales: manejo de constituyentes: tiempo, lugar..., y las acotaciones. En las Consideraciones Finales se subraya su sentido ético; se revisa su adscripción a un “realismo simbólico” y afirmaciones anteriores, como la periodización en dos épocas, y su calificación de teatro para leer
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Carbon isotope ratio of androgens in urine specimens is routinely determined to exclude an abuse of testosterone or testosterone prohormones by athletes. Increasing application of gas chromatography/combustion/isotope ratio mass spectrometry (GC/C/IRMS) in the last years for target and systematic investigations on samples has resulted in the demand for rapid sample throughput as well as high selectivity in the extraction process particularly in the case of conspicuous samples. For that purpose, we present herein the complimentary use of an SPE-based assay and an HPLC fractionation method as a two-stage strategy for the isolation of testosterone metabolites and endogenous reference compounds prior to GC/C/IRMS analyses. Assays validation demonstrated acceptable performance in terms of intermediate precision (range: 0.1-0.4 per thousand) and Bland-Altman analyses revealed no significant bias (0.2 per thousand). For further validation of this two-stage analyses strategy, all the specimens (n=124) collected during a major sport event were processed.
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La present investigació parteix de la urgència de revisar la poesia catalana contemporània des dels paràmetres de la teoria literària que abracen l’àmbit de la representació del desig. Sota aquest paraigües teòric i la seva estricta vinculació amb les noves formulacions del subjecte líric postmodern, he proposat un estudi comparatiu entre tres grans poètiques que han marcat, cada una d’elles en el seu context socioliterari, un punt d’inflexió: Gabriel Ferrater, Maria-Mercè Marçal i Enric Casasses. Més enllà de la ruptura moderna entre escriptura i exaltació d’una subjectivitat única i monolítica, he investigat i esclarit les variables retòriques (teoria literària ) i ontològiques (discursos filosòfics) que coparticipen en la instal•lació d’un subjecte líric i un quefer poètic postmoderns. Un nou posicionament de la veu lírica que transforma la identitat textural en un procés, en una recerca. Així és que l’alteritat amorosa s’evidencia com el centre de representació i experimentació dels límits del jo líric. A partir de les aproximacions teòriques sobre la representació del desig –que des del postestructuralisme han arribat, mitjançant la crítica literària feminista, fins als nostres dies -, he establert les coordenades metodològiques que justifiquen el triangle comparatiu i m’han permès mostrar com la poesia eròticoamorosa és epicentre de la poesia i la poètica dels tres autors. L’exègesi de les seves obres ha guiat la investigació cap a l’abordatge de les construccions dels “jo” lírics, tot prenent com a centre: a) l’escriptura, obertura cap a l’Altre, b) el subjecte de l’enunciació com a subjecte desitjant, c) les representacions de l’altre/a amorós, d) les retòriques del desig, e) la recerca del plaer textual, i f)moral i poètiques. L’objectiu final ha estat dibuixar un mapa de carreteres per guiar els itineraris de l’escriptura del desig en la nostra poesia i, palesar, a mode de síntesi i d’obertura, com l’obra d’Enric Casasses recull la retòrica de l’alteritat amorosa i funda, des d’ella, la necessitat de la paraula oral i l’acció poètiques.
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Collection : [Physiologies Aubert]
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Evaluation of segmentation methods is a crucial aspect in image processing, especially in the medical imaging field, where small differences between segmented regions in the anatomy can be of paramount importance. Usually, segmentation evaluation is based on a measure that depends on the number of segmented voxels inside and outside of some reference regions that are called gold standards. Although some other measures have been also used, in this work we propose a set of new similarity measures, based on different features, such as the location and intensity values of the misclassified voxels, and the connectivity and the boundaries of the segmented data. Using the multidimensional information provided by these measures, we propose a new evaluation method whose results are visualized applying a Principal Component Analysis of the data, obtaining a simplified graphical method to compare different segmentation results. We have carried out an intensive study using several classic segmentation methods applied to a set of MRI simulated data of the brain with several noise and RF inhomogeneity levels, and also to real data, showing that the new measures proposed here and the results that we have obtained from the multidimensional evaluation, improve the robustness of the evaluation and provides better understanding about the difference between segmentation methods.
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Acquis parmi 44 mss. provenant du cabinet du pape Pie VI (Giovanni-Angelo Braschi) "peu après l'envoi principal des mss. du Vatican en 1797"; cf. B.n.F., département des Manuscrits, Archives Modernes 492, registre des acquisitions du département des Manuscrits an II-an XIV (1793-1805), f. 49, description éditée par M.-P. Laffitte, Bulletin du Bibliophile, 1989/2, 310.
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It is increasingly evident that cancer results from altered organ homeostasis rather than from deregulated control of single cells or groups of cells. This applies especially to epithelial cancer, the most common form of human solid tumors and a major cause of cancer lethality. In the vast majority of cases, in situ epithelial cancer lesions do not progress into malignancy, even if they harbor many of the genetic changes found in invasive and metastatic tumors. While changes in tumor stroma are frequently viewed as secondary to changes in the epithelium, recent evidence indicates that they can play a primary role in both cancer progression and initiation. These processes may explain the phenomenon of field cancerization, i.e., the occurrence of multifocal and recurrent epithelial tumors that are preceded by and associated with widespread changes of surrounding tissue or organ "fields."
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Collection : [Physiologies Laisné-Aubert]
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Previous studies showed a fetal sheep liver extract (FSLE), in association with monophosphoryl lipid A, MPLA (a bioactive component of lipid A of LPS), could interact to induce the development of dendritic cells (DCs) which regulated production of Foxp3+ Treg. This interaction was associated with an altered gene expression both of distinct subsets of TLRs and of CD200Rs. Prior studies had suggested that major interacting components within FSLE were gamma-chain of fetal hemoglobin (Hgbgamma) and glutathione (GSH). We investigated whether differentiation/maturation of DCs in vitro in the presence of either GM-CSF or Flt3L to produce preferentially either immunogenic or tolerogenic DCs was itself controlled by an interaction between MPLA, GSH and Hgbgamma. At low (approximately 10 microg/ml) Hgbgamma concentrations, DCs developing in culture with GSH and MPLA produced optimal stimulation of allogeneic CTL cell responses in vitro (and enhanced skin graft rejection in vivo). At higher concentrations (>40 microg/ml Hgbgamma) and equivalent concentrations of MPLA and GSH, the DCs induce populations of Treg which can suppress the induction of allogeneic CTL and graft rejection in vivo. These different populations of DCs express different patterns of mRNAs for the CD200R family. Addition of anti-TLR or anti-MD-1 mAbs to DCs developing in this mixture (Hgbgamma+GSH+MPLA), suggests that one effect of (GSH+Hgbgamma) on MPLA stimulation may involve altered signaling through TLR4.