Von den ältesten Zeiten bis zum "schwarzen Tod" (1348)

von Siegbert Neufeld

MYB-FL controls gain and loss of floral UV absorbance, a key trait affecting pollinator preference and reproductive isolation

Adaptations to new pollinators involve multiple floral traits, each requiring coordinated changes in multiple genes. Despite this genetic complexity, shifts in pollination syndromes have happened frequently during angiosperm evolution. Here we study the genetic basis of floral UV absorbance, a key trait for attracting nocturnal pollinators. In Petunia, mutations in a single gene, MYB-FL, explain two transitions in UV absorbance. A gain of UV absorbance in the transition from bee to moth pollination was determined by a cis-regulatory mutation, whereas a frameshift mutation caused subsequent loss of UV absorbance during the transition from moth to hummingbird pollination. The functional differences in MYB-FL provide insight into the process of speciation and clarify phylogenetic relationships between nascent species.

Kundmachung: Bei Beginn der Unruhen in Italien Ende Juni 1847 bestand der Bankschatz in 79,574.669 fl. ...

Welsch (Projektbearbeiter): Die Österreichische National-Bank sieht sich angesichts des Ansturms auf die Bankeinlagen gezwungen, die Auszahlungen auf 25 Gulden pro Kontoinhaber zu beschränken

Die Juden zu Worms, Ulm u. Regensburg im Jahre 1348

Christian Wilhelm Spieker

Vom "schwarzen Tod" (1348) bis zum Ausgang des Mittelalters

Enth. außerdem: Die Zeit der Judenschulden-Tilgungen und -Schatzungen in Sachsen-Thüringen / Siegbert Neufeld ; Die Vertreibung der Juden aus Sachsen und Thüringen / Siegbert Neufeld

Arabis alpina fl. pl. albo.

Von A. Sliwa

Der Brodbaum (Artocarpus incisa L. fil. und integrifolia L. fl.)

Vom Dr. H. Karsten

Paul Kuhn als Bernardo Novagerio, Rollenbild, Kniestück, in: Hans Pfitzner: Palestrina

Signatur des Originals: S 36/F05071

Anton Ludwig als Bernardo Novagerio, Rollenbild, Kniestück, in: Hans Pfitzner: Palestrina

Signatur des Originals: S 36/F05306

Giovanni Boccaccio, Angelus Politianus, Giovanni Giorgio Trissino, Bernardo Divizio, Ludovico Ariosto {[u.a.], Brustbild, Gruppenbildnis

Signatur des Originals: S 36/G02565

«Si el hombre careciera de oído…», según Bernardo Silvestre

Durante la primera mitad del siglo XII cobró vigencia en Chartres una escuela de pensamiento filosófico-teológico caracterizada, en buena medida, por el afán de explicación del Génesis mediante el Comentario de Calcidio al Timeo de Platón. La Cosmografía de Bernardo Silvestre, dedicada a Teodorico de Chartres, permanece en las proximidades del interés cientificista y argumentativo propio de esta escuela, pero está formulada en términos literarios, en parte en prosa y en parte en verso. Dividida en dos grandes secciones: ‘Macrocosmos’ y ‘Microcosmos’, se cierra con la descripción de la naturaleza humana y su funcionamiento operativo en los procesos vitales y gnoseológicos. Los sentidos de que goza el hombre, asentados en la cabeza, son considerados instrumentos al servicio del intelecto que juzga. Ellos provienen de una única fuente pero desarrollan de diversas maneras sus operaciones. Si faltaran, no habría ni enseñanza de las letras ni sabiduría.

Manuel Mujica Láinez, Lucio V. López, Horacio Quiroga, Georges Clemenceau, Carlos Martínez Moreno, Roberto Arlt, Enrique González Tuñón, César Fernández Moreno, Juan José Sebreli, Bernardo Kordon, Miguel Brascó, José María Salaverría: Crónicas de Buenos Aires. Edic. Jorge Álvarez, 1965, 154 páginas.

Fil: Polimeni, Dante Osvaldo.

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.