991 resultados para Timur, 1336-1405


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A total of 2629 individuals of Arenaeus cribrarius (1293 males and 1336 females) were captured in Ubatuba (SP), from August 1996 to July 1997. Individuals were distributed in 5 mm size class carapace width (CW), to verify sex-specific growth-age equations. The Von Bertalanffy model was chosen to determine the growth rate and expressed by CW=120.52[1-e(-1.80t)] for males and CW=100.81[1-e(-1.60t)] for females. The age estimated for the first juvenile stage (t(o)) was 6.1 and 8.3 days for males and females, respectively. The maximum age determined was 1.8 years for males and 2 years for females, which correspond to a maximum size of 115.8 and 96.7 mm, respectively. The maximum size (CWmax) estimated using 95% of asymptotic size was 114.5 mm for males and 95.8 mm for females. Males have a precocious sexual maturity (5 months) when compared to females (6.8 months). The growth rate and size of A. cribrarius are higher than other portunid species, with great interest for aquaculture.

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Se revisan las principales aplicaciones de los radioiótopos en el estudio de los mecanismos de reacciones químicas en la determinación de varias constantes de compuestos y procesos químicos.

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Los cómics se han convertido en los últimos años en un fenómeno social, una gran industria e incluso han sido aceptados como arte. En todo el mundo se implementan cursos sobre cómics y cómo un apoyo a los mismos se presenta en esta ponencia un manual resumido del manejo del sonido en los cómics.

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