Le fratture del collo femore

Oltre il mito: Lamarck e le scienze naturali del suo tempo

PIETRO CORSI, Oltre il mito: Lamarck e le scienze naturali del suo tempo, Bologna, II Mulino, 1983, 8vo, pp. 432, L.30,000 (paperback). While Charles Darwin still awaits a satisfactory scientific biography, four studies have appeared recently which illuminate the position of Lamarck in the history of science. While two of them, by R. Burckhardt and L. Jordanova, come from the Anglo-Saxon world,...

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Etiología del síndrome del ovario poliquístico

The polycystic ovary syndrome (PCOS) is a complex endocrine-metabolic disorder, in which patients with different etiopathogenic mechanisms show the same phenotype. The primary defect in PCOS consists of an exaggerated synthesis and secretion of androgens by the ovary and, possibly, by the adrenal gland. The etiology remains unknown. This primary defect is triggered by several factors, of which ...

Optimización del Desempeño del Sistema IP Móvil

La optimización se ve lograda al aplicar un esquema de “clusters” (grupos de células) para minimizar el tráfico por actualización, lo cual implica considerar procesos de “paging” (localización) que propició un costo adicional (tráfico extra) y los re-enrutamientos fueron minimizados utilizando el agente cache. Tomando esto en cuenta, el desempeño de la red es mucho más favorable que el desempeñ...

Etiología del síndrome del ovario poliquístico

The polycystic ovary syndrome (PCOS) is a complex endocrine-metabolic disorder, in which patients with different etiopathogenic mechanisms show the same phenotype. The primary defect in PCOS consists of an exaggerated synthesis and secretion of androgens by the ovary and, possibly, by the adrenal gland. The etiology remains unknown. This primary defect is triggered by several factors, of which ...