989 resultados para Genin, Sylvester, 1822-1850.
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gehalten von Leopold Löw
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Fil: Fontana, Esteban.
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Fil: Molina, Hebe Beatriz. CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas) - Universidad Nacional de Cuyo
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El presente trabajo es planteado desde una perspectiva regional enmarcada en la línea de investigación seguida desde casi una década atrás: las transformaciones económicas y espaciales en Mendoza, y los procesos que las originan. El punto de partida fue considerar que la formación geográfico-histórica de las regiones confluye en la estructuración del Estado-nación. El equilibrio económico-político entre las regiones principales da fundamento para el desarrollo de la soberanía del Estado sobre el territorio de su dominio, en la medida en que tal equilibrio responda a una funcionalidad o complementariedad de esos espacios regionales, potenciando fuerzas centrípetas, integradoras, y controlando o anulando las centrífugas. Se propone entonces analizar el proceso de formación de una economía regional, centrada en Mendoza,durante la segunda mitad del siglo XIX, período en que se preparó y se difundió la modernización capitalista, asentada en un sistema agroindustrial vitivinícola. Es objeto de estudio principalmente el espacio valorizado mendocino, el oasis, y el proceso de construcción y expansión que registró. Pero como la región no es una simple superficie, sino un área organizada por grupos humanos interesó especialmente determinar la actuación de dichos grupos, su articulación con el espacio que construyeron y su vinculación funcional con otras regiones, en especial en el orden económico.
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An integrated instrument package for measuring and understanding the surface radiation budget of sea ice is presented, along with results from its first deployment. The setup simultaneously measures broadband fluxes of upwelling and downwelling terrestrial and solar radiation (four components separately), spectral fluxes of incident and reflected solar radiation, and supporting data such as air temperature and humidity, surface temperature, and location (GPS), in addition to photographing the sky and observed surface during each measurement. The instruments are mounted on a small sled, allowing measurements of the radiation budget to be made at many locations in the study area to see the effect of small-scale surface processes on the large-scale radiation budget. Such observations have many applications, from calibration and validation of remote sensing products to improving our understanding of surface processes that affect atmosphere-snow-ice interactions and drive feedbacks, ultimately leading to the potential to improve climate modelling of ice-covered regions of the ocean. The photographs, spectral data, and other observations allow for improved analysis of the broadband data. An example of this is shown by using the observations made during a partly cloudy day, which show erratic variations due to passing clouds, and creating a careful estimate of what the radiation budget along the observed line would have been under uniform sky conditions, clear or overcast. Other data from the setup's first deployment, in June 2011 on fast ice near Point Barrow, Alaska, are also shown; these illustrate the rapid changes of the radiation budget during a cold period that led to refreezing and new snow well into the melt season.
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We rediscovered a temperature time series from Heinrich W. M. Olbers. Heinrich W. M. Olbers measured in Bremen, Sandstrasse 15, in Germany from 1803 to 1821 three times a day (7 am, 1-2 pm and 10 pm) the temperature at his window of his study, which is up to 16 m above the zero marking at the Weserbrücke. The temperature values from 1814 are missing. We got the temperature values from different sources in the Olbers estate. We calculated the daily mean and digitized it in various plots. A very small trend towards cooling is apparent in the data which might be insignificant. But a clear seasonal trend was identifiable: the late winter and the early spring were becoming warmer, while the summer and early autumn became cooler. The average temperature in Bremen was 8.3606 deg C at that time. Additionally we combined the newly discovered Heinrich W. M. Olbers temperature data and the Heinemann and Bätjer data to see whether there are great differences between these two time series. Although the temperatures of Heinrich W. M. Olbers are in general cooler than the Heinemann and Bätjer data they fit together.
Meteorological observations during HAAY cruise from Hellevoetsluis to Suriname started at 1850-05-15