Berliner Bürgergarde 1809

Ludwig Geiger

Die Vorarbeiten für die badische Judengesetzgebung in den Edikten 1807 - 1809

Adolf Lewin

Die Vorarbeiten für die badische Judengesetzgebung in den Edikten 1807 - 1809

Adolf Lewin

Die Vorarbeiten für die badische Judengesetzgebung in den Edikten 1807 - 1809

Adolf Lewin

Die Vorarbeiten für die badische Judengesetzgebung in den Edikten 1807 - 1809

Adolf Lewin

Die Schwane auf dem Duzendteich im Feb. 1809

Text in d. Platte graviert

Ms. or. 38 - Chronik von Abessinien bis auf das Jahr 7301 (1809)

Vorbesitzer: Eduard Rüppell;

Ms. Ff. E. Rüppell II - Wörtliche Uebersetzung der von Djeazematsch Hailu gefertigten Abyssinischen Chronik, 1768 - 1809

Vorbesitzer: Eduard Rüppell;

Joseph Haydn (1732-1809) nach einem Stich von E. Quenedy

Signatur des Originals: S 36/F08786

Horizontal profiles of longwave and shortwave radiation components over sea ice near Barrow, Alaska during the 2011 melt

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.

Hacendados, Cabildo y "corraleros" : El acceso de los hacendados al abasto de carne a partir del estudio de dos estancias de la campaña sur de Buenos Aires (1785-1809)

Algunas tradiciones historiográficas señalaban que el mercado colonial de abasto porteño era controlado por un grupo de hacendados en acuerdo con el Cabildo de Buenos Aires. La fijación de precios debía, por lo tanto, favorecer a los grandes hacendados en detrimento de una población. Sin embargo, a partir del estudio de las cuentas de una estancia, es posible demostrar que incluso grandes hacendados se encontraban subordinados a un mercado regulado donde el eje de una puja por el beneficio de transferencias de valor se situaba sobre todo entre el propio Cabildo y los "corraleros", comercializadores que conectaban la campaña con los corrales de Buenos Aires