Search

El artículo estudia cómo la fenomenología puede contribuir al quehacer teológico. A tal fin, el prof. Gilbert comienza por identificar los inicios de la fenomenología (Hegel, Husserl). Seguidamente, presenta lo que él denomina fenomenología “descriptiva” (Durkheim, Caillois, Otto), marcada por las ciencias humanas, que sirvió para reconocer las características esenciales de la religión. Pero la fenomenología puede dar un paso más, ya estrictamente filosófico, para elaborar un modo de fenomenología “especulativa”. Finalmente, el artículo indica las aportaciones de esta esta fenomenológica al desarrollo de la teología, estudiando las propuestas de Michel Henry, Jean-Luc Marion y Emmanuel Falque.

The low temperature anomalous Hall effect in amorphous sputtered SmxCo1−x films is investigated. The microstructure and amorphous nature of the films were characterized by local area diffraction through transmission electron microscopy. The Sm/Co ratio was changed to elucidate the origin of the anomalous Hall effect, which is a proxy for spin polarized transport. The anomalous Hall effect obeys a scaling relation that points to an intrinsic Berry-curvature based mechanism, consistent with recent reports on other amorphous magnetic materials. The anomalous Hall angle increases with increasing Sm content and reaches large values of ∼1%. This observation is related to recent measurements of the local structure in amorphous Sm–Co alloys and suggests that rare earth elements can be utilized to improve electrical control over spin polarization in amorphous magnetic films. [ABSTRACT FROM AUTHOR]

Objective: Oxidative stress occurs when the metabolic balance of a cell is disrupted through exposure to excess pro-oxidant. Whilst it is known that unregulated production or exposure to exogenous sources of pro-oxidants induces chondrocyte cell death and degrades matrix components in vitro, relatively little is known of the effects of pro-oxidants on articular cartilage in situ. The objective of this study was to determine if a single exposure to the pro-oxidant hydrogen peroxide (H(2)O(2)) induces a degenerative phenotype.Methods: Articular cartilage explants were obtained from skeletally mature bovine steers and exposed to a single dose of hydrogen peroxide (0.1-1.0 mM) and cultured for up to 21 days. Cell death, and sulfated glycosaminoglycan loss into the medium and gene expression were quantitatively determined. Adoption of an abnormal chondrocyte phenotype was analyzed through the expression of 3B3(-), nitrotyrosine and procollagen type IIA epitopes in cartilage explants.Results: Cell death occurred primarily at the surface zone of cartilage in a dose-dependent manner in H(2)O(2) treated explants, and supplementation of standard serum-free medium with insulin-selenium-transferrin significantly reduced cell death (>fourfold). Nitric oxide synthase-2 gene expression and proteoglycan loss increased in oxidant treated explants in a concentration-dependent manner. Antibody labeling to 3B3(-), procollagen type IIA and nitrotyrosine was present in all treated explants but absent in untreated explants.Conclusions: This study demonstrates that a single exposure to high levels of pro-oxidant causes the expression of genes and antibody epitopes that are associated with early degenerative changes observed in experimental osteoarthritis. [ABSTRACT FROM AUTHOR]

Presents several abstracts related to matrix molecules presented during the British Connective Tissue Society Meeting at the University of York in York, England. 'An Investigation of Hyaluroan Synthesis and Hyaluroan Binding Proteins During Rat Palatogenesis,' by S. Thomas and R.C. Hall.