Étienne Nicolas Mehul, Brustbild, Profil

Signatur des Originals: S 36/G04219

Étienne Nicolas Mehul, Brustbild

Signatur des Originals: S 36/G04220

Claude Joseph Rouget de Lisle, Brustbild, Profil, Medaillon

Signatur des Originals: S 36/G04356

Costumi degl' Israeliti, e de' Christiani : divisa in due parti

opera del Sig. Abate Fleury. [Trasportata dal Francese da Selvaggio Canturani]

La situation légale des Israélites en Russie : Tome Premier ; Du règne du Czar Alexis Michaĭlovitch au règne du Czar Nicolas Ier ; Traduit du russe

par Nicolas de Gradowsky

Historisches Tagebuch aller merkwürdigen Begebenheiten, welche sich vor dem Einzuge der kaiserl. französischen Truppen in die k.k. Haupt- und Residenzstadt Wien vom Monat September bis 13. November 1805, während sie diese Hauptstadt im Besitze hatten, vom 13. November 1805 bis 13. Jäner 1806, und nach ihrem Abzuge bis 1. Februar 1806 zugetragen haben

Von Anton Ritter v. Geusau, wiener. Magistrats-Beamten

A global seasonal surface ocean climatology of phytoplankton types based on CHEMTAX analysis of HPLC pigments

Much advancement has been made in recent years in field data assimilation, remote sensing and ecosystem modeling, yet our global view of phytoplankton biogeography beyond chlorophyll biomass is still a cursory taxonomic picture with vast areas of the open ocean requiring field validations. High performance liquid chromatography (HPLC) pigment data combined with inverse methods offer an advantage over many other phytoplankton quantification measures by way of providing an immediate perspective of the whole phytoplankton community in a sample as a function of chlorophyll biomass. Historically, such chemotaxonomic analysis has been conducted mainly at local spatial and temporal scales in the ocean. Here, we apply a widely tested inverse approach, CHEMTAX, to a global climatology of pigment observations from HPLC. This study marks the first systematic and objective global application of CHEMTAX, yielding a seasonal climatology comprised of ~1500 1°x1° global grid points of the major phytoplankton pigment types in the ocean characterizing cyanobacteria, haptophytes, chlorophytes, cryptophytes, dinoflagellates, and diatoms, with results validated against prior regional studies where possible. Key findings from this new global view of specific phytoplankton abundances from pigments are a) the large global proportion of marine haptophytes (comprising 32 ± 5% of total chlorophyll), whose biogeochemical functional roles are relatively unknown, and b) the contrasting spatial scales of complexity in global community structure that can be explained in part by regional oceanographic conditions. These publicly accessible results will guide future parameterizations of marine ecosystem models exploring the link between phytoplankton community structure and marine biogeochemical cycles.

Raban Maur – Claude de Turin, Deux commentaires sur le libre de Ruth. Introduction, traduction, notes et index par P. Monat (Sources Chrétiennes 533), Les Éditions du Cerf, Paris, 2009; 190 pp. ISBN 978-2-204-09181-7.

Fil: Peretó Rivas, Rubén.

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.

Radiocarbon ages, carbon and oxygen isotopes and Mg/Ca and Sr/Ca ratios of Globigerinoides in sediment core MD99-2203, Cape Hatteras

This study presents high-resolution foraminiferal-based sea surface temperature, sea surface salinity and upper water column stratification reconstructions off Cape Hatteras, a region sensitive to atmospheric and thermohaline circulation changes associated with the Gulf Stream. We focus on the last 10,000 years (10 ka) to study the surface hydrology changes under our current climate conditions and discuss the centennial to millennial time scale variability. We observed opposite evolutions between the conditions off Cape Hatteras and those south of Iceland, known today for the North Atlantic Oscillation pattern. We interpret the temperature and salinity changes in both regions as co-variation of activities of the subtropical and subpolar gyres. Around 8.3 ka and 5.2-3.5 ka, positive salinity anomalies are reconstructed off Cape Hatteras. We demonstrate, for the 5.2-3.5 ka period, that the salinity increase was caused by the cessation of the low salinity surface flow coming from the north. A northward displacement of the Gulf Stream, blocking the southbound low-salinity flow, concomitant to a reduced Meridional Overturning Circulation is the most likely scenario. Finally, wavelet transform analysis revealed a 1000-year period pacing the d18O signal over the early Holocene. This 1000-year frequency band is significantly coherent with the 1000-year frequency band of Total Solar Irradiance (TSI) between 9.5 ka and 7 ka and both signals are in phase over the rest of the studied period.

La dinámica mercantil de las mujeres rioplatenses frente al resquebrajamiento del Antiguo Régimen (1806-1810)

Este trabajo tiene como objetivo analizar la dinámica mercantil de las mujeres rioplatenses en el marco de los acontecimientos que se suscitaron entre 1806 y 1810. Explorar la mecánica de los comportamientos previos a esa etapa resulta fundamental para observar los cambios que se produjeron después. A fin de examinar tales cambios se recurre a una serie de variables: las formas de participación en la práctica mercantil, esto es, si cargaban los frutos y efectos a su cuenta y riesgo, y/o a través de terceros o experimentaban con las dos modalidades, el grado de inserción y permanencia en la actividad para definirlas en función de la mayor o menor regularidad en el ejercicio comercial, los rubros comercializados y la relación con las rutas del intercambio oceánico y regional