Teste de envelhecimento acelerado em sementes de quiabo

The objective of this research was to study the accelerated aging test to evaluate the okra vigor seed. Were used four okra seed lots cv. "Santa Cruz". The initial seed lot quality was evaluate by the moisture content, germination, first germination count, speed of germination index and seedling emergence. The experiment was carried out in two phases: the first one the seeds were submitted to the accelerate aging with and without NaCl salt solution aging periods of 48, 72, 96 and 120 hours, at 41 and 45(0) C temperature. The second phase the best procedures as for as accelerated aging and temperatures were repeated. The period of 72h and 41 C with and without NaCl saturated solution was the most adequate for the lot classification in distint vigor levels.

Origens da vida

We present a historical perspective about the ideas concerning the origin of life. After displaying the main topics necessary for understanding life's origin, the main characteristics of the present life forms and their relationships are shown, suggesting a common ancestor. The conditions for prebiotic chemistry in terrestrial or interplanetary environments are reviewed. We put in context the arguments about the early origin of replicators versus metabolism. The very narrow window for life settlement in the early Earth is stressed, pointing to the likelihood of life arising in other places in the Universe. Finally, we present the cornerstones of current search for life outside our planet.

La política económica de Chile en el decenio 1954-63

Documento en inglés ingresado en Biblioteca (88753)

Centro y periferia: la negociación sobre nuevas bases

Incluye Bibliografía

Centre and periphery: new bases for negotiation

Includes bibliography

Economic policy in Chile, 1954-63

Includes bibliography

Natureza e implicações da "heterogeneidade estrutural" da América Latina

Incluye Bibliografía

Notas sobre os estilos de desenvolvimento na América Latina

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Naturaleza e implicaciones de la "heterogeneidad estructural" de la América Latina

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Notas sobre estilos de desarrollo en América Latina

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La dimensión ambiental en los estilos de desarrollo de América Latina

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Aspectos controversiales de los capítulos sobre propiedad intelectual de los acuerdos de libre comercio celebrados principalmente por los Estados Unidos

Incluye bibliografía

Intellectual property rights and sustainable development: a survey of major issues

Includes bibliography

Evaluación de la epidemia de dengue en el Estado Plurinacional de Bolivia en 2009

Incluye Bibliografía

Los derechos de propiedad intelectual en los acuerdos de libre comercio celebrados por países de América Latina con países desarrollados

Incluye Bibliografía