Browsing by Issue Date Facultad de Ciencias
Now showing items 21-40 of 8168
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(Universidad de Chile, 1968)
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(1969)THE effect of temperature on the resting potential has been studied in a number of different preparations1-3, and has attracted considerable theoretical interest. In the axons of the squid Loligo forbesi, the resting ...
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Tracer diffusion and activity coefficients of counterions in aqueous solutions of polyelectrolytes (1969)Tracer diffusion coefficients of Ag+ in silver polystyrenesulfonate and counterion activity coefficients of sodium and silver polystyrenesulfonates have been determined at different concentrations. The results have been ...
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(Universidad de Chile, 1969)
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(Universidad de Chile., 1969)Se estudia con cierto detalle algunos aspectos de la formulación variacional del problema del movimiento, en especial se analiza cuidadosamente la cuestión de la independencia de las funciones que aparecen en la integral ...
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(Universidad de Chile, 1969)Se estudia el intercambio de excitación dependiente del tiempo entre dos átomos, separados por una distancia.grande, comparada con sus respectivos radios de Bohr.
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(Universidad de Chile, 1969)
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(Universidad de Chile, 1970)
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(Elsevier , Science Ltd., 1970)Sophora tetraptera, sensu R,eiche, is the scientific name assigned to a southem Chilean tree known by the names pelú and pilopilo, which closely resembles the New Zealand species S. tetraptera J. Mill. and S. microphylla ...
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(1970)The adsorption of bovine serum albumin (BSA) at an air/water interface was shown to be reversible and the equilibrium adsorption isotherm measured for concentrations between 0.001% and 10.0%. The desorption of BSA into a ...
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(1970)The two major methionyl-tRNA species from wheat embryos and E. coli have been studied as regards their capacity to form a ternary complex with GTP and the ribosomal binding enzyme from both sources. Methionyl-tRNA1 from ...
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(1970)WE wish to report a new method with which we have been able to measure the sodium and potassium conductance changes postulated by Hodgkin and Huxley1 in the course of a single action potential. To measure the membrane ...
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(ELSEVIER, 1970-03-17)Sophora tetraptera sensu Reiehe seeds were examined for alkaloids. Cytisine, methyleytisine and matrine were isolated, and a fourth alkaloid was deteeted by TLC. The relative amounts of the three major alkaloids support ...
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(1971)The following glycolytic enzyme activities were demonstrated in membrane fractions isolated from squid retinal nerve: phosphoglyceric kinase, pyruvic kinase, glyceraldehyde-3-phosphate dehydrogenase, aldolase, glucose-6-phosphate ...
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(1971)The problem of spatial variation of the order parameter in the neighborhood of a nonmagnetic impurity with broadened d levels is investigated near the superconducting critical temperature. It is shown that, due to resonance ...
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(1971)This paper discusses, first, the selective pressures which led to the two basic types of animal eyes, compound vs. camera eyes. Secondly, it considers what is the significance of the apparent similarity of the wiring ...
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(Universidad de Chile, 1971)El objetivo primordial del presente trabajo fue el de obtener información general sobre el mecanismo de catálisis básica en reacciones de sustitución nucleofílica aromática. Esto se planeó en base al estudio de las reacciones ...
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(Universidad de Chile, 1971)