992 resultados para 70-510


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A detailed study of physical properties was made on core samples from Deep Sea Drilling Project Hole 504B. The measured properties are density, porosity, sonic velocity, electrical resistivity, and fluid permeability. Basalts from this young oceanic crust have higher density and sonic velocity than the average DSDP basalts. Porosity (and temperature) dependences of physical properties are given by V = Vo - a-phi; roo = roo-0 exp(E*/RT)phi**-q; k = k0' phi**2q-1; where V is the sonic velocity (km/s), Vo = 6.45 (km/s), a = 0.111 (km/s %), phi is the porosity (%), roo is the electrical resistivity (ohm m), roo-0 = 0.002 (ohm m), E* = 2.7 (Kcal/mol) for fresh basalts, RT has its usual meaning, q = 1.67 ± 0.27, k is the permeability, k0' = (1 to about 10) x 10**-12 (cm**2). Porosity distribution in the crust in this area is estimated by combining the seismic velocity distribution and velocity-porosity relation. Because of the rapid decrease in porosity with depth, resistivity increases and permeability decreases rapidly with depth. The decreasing rate of permeability with increasing depth is approximately given by k(cm**2) = 2 x 10**-10 exp(-z (km)/0.3).

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Con estas notas y temas no pretendo hacer una historia exhaustiva de la Escuela de Música sino dar una breve reseña de su trayectoria y aportar datos y anécdotas de los que he tenido conocimiento en el transcurso de distintos estudios sobre la música de Mendoza. La Escuela, como todavía la llamamos a pesar de sus cambios de nombre, es la institución pública de enseñanza musical más antigua de Mendoza y sus 70 años de vida son representativos de las problemáticas transformaciones de la sociedad mendocina y argentina.

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Fil: Jalif de Bertranou, Clara Alicia. CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas) - Universidad Nacional de Cuyo