Proceedings of the 1986 International Congress on Renewable Energy Sources. Sequential transduction of solar energy into chemical energy by the plant kingdom. International Congress on Renewable Energy Sources [18-23 Mayo 1986, Madrid].

Terol, S., ed. Losada, M.
Consejo Superior de Investigaciones Científicas.

1987

V.1
CIENA
1113

84-00-6673-1

Thermonuclear fusion in the Sun (1 Mton (annihilated matter) s-1 - 1026 W) is the ultimate source of free-energy for virtually all activity on Earth. The pm-light waves so produced in the center of the Sun at the unimaginable temperature of tens million k are very energetic y rays (about 1 MeV photon-1), but they are filtered up through cooler layers and after a random walk of one million years reach the relatively cold (about 6000 K) solar surface as light waves on the um order of much lower energy (about 1 eV photon-1). The UV-visible-IR spectrum of sun-light (from about 200 to 3000 nm) keeps its maximum in the blue-green during its 10 min run to the Earth, but is narrowed by passing through the atmosphere to the range of wavelengths that constitute the domain of photobiology (300-1100 nm), including those in the visible range which are photosynthetically active (400-700 nm, i.e., 2-3 eV photon-1). Life on our planet depends in an admirable manner on this radiant energy which incessantly reaches the biosphere in huge amounts (10 17 W) and is partly converted (10 14 W) in biomass (200 Gton year-1) and atmospheric oxygen by the plant kingdom. Photosynthesis consists essentially in the conversion of solar energy by the chlorophyll a photocenters-undoubtedly the most important and universal redox photosystems in biology-into electronic energy and subsequently into redox energy, which is further partially transduced into acid-base energy, metaphosphate-orthophosphate energy ...(ver documento). ABSTRACT. SOLAR ENERGY AND BIOMASS PRODUCTION. FOOD AND ENERGY REQUIREMENTS OF MANKIND. PHOTOSYNTHESIS AS AN ENERGY-CONVERSION PROCESS. SEQUENTIAL ENERGY TRANSDUCTION IN PHOTOSYNTHESIS. REFERENCES.

Presenta tbls. y diagrs.

GENERAL; BIOMASA; ENERGIA SOLAR; CONVERSION DE LA ENERGIA; COMBUSTIBLES FOSILES; FOTOSINTESIS; ANALISIS QUIMICO; FUENTES DE ENERGIA RENOVABLES; ENERGIA QUIMICA;