997 resultados para ALOHA2002-12-13


Relevância:

100.00% 100.00%

Publicador:

Resumo:

Se recogen las intervenciones que tuvieron lugar en el último seminario sobre la enseñanza de las matemáticas en el año 2000. En éste se analizó la situación en los distintos niveles de la enseñanza de las matemáticas. Se hace especial énfasis en el papel del profesorado, y en los materiales y recursos necesarios para oferecer una enseñanza de calidad. Así mismo, se dan unas recomendaciones para que los profesores y centros adquieran unos mínimos que les permitan impartir las clases de matemáticas con garantías. También se incluye un cuestionario que rellenaron cada uno de los miembros de las sociedades federadas en la Federación Española de Sociedades de Profesores de Matemáticas.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Resumen tomado de la publicación

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Subt??tulo tomado de la cubierta

Relevância:

100.00% 100.00%

Publicador:

Resumo:

This paper chronicles a 2-year-old girl who presented with acute leukemia/lymphoma syndrome of the T cell immuno-phenotype. At this time, the cytogenetic analysis of her bone marrow cells showed a reciprocal translocation between the short arm of chromosome 12 and the long arm of chromosome 13, t(12;13)(p13;q14). The immunophenotyping of bone marrow blast cells by flow cytometry revealed a population of cells positive for CD56, CD117, CD45, partial CD33, partial HLA-DR, CD13, CD7, CD2 and CD5. Therefore, a diagnosis of acute leukemia with a mixed T cell/myeloid phenotype was made. The patient had a poor response to classic T cell acute lymphocytic leukemia/lymphoma therapy; thus, her treatment was changed to a myeloid leukemia protocol, which produced a good response. She underwent a successful cord blood transplantation from an unrelated HLA partially matched donor. The coexistence of these two phenotypes prompts questions about the existence of clonal instability, which might influence the choice of therapy. The rarity of the t(12;13)(p13;q14) and the coexistence of T cell/myeloid markers suggest a nonrandom association. To the best of our knowledge, this is the first reported case in which a cell clone bearing a t(12;13)(p13;q14) translocation in a mixed T cell/myeloid lesion was detected. Copyright (C) 2012 S. Karger AG, Basel

Relevância:

100.00% 100.00%

Publicador:

Resumo:

A general strategy has been devised for the stereoselective synthesis of 12,13-cyclopropyl-epothilone B and side-chain-modified variants thereof, which relies on late stage introduction of the heterocycle through Wittig olefination of ketone 14. Formation of the macrocycle was achieved through RCM-based ring closure and introduction of the cyclopropane moiety involved a highly selective Charette cyclopropanation of allylic alcohol 7.