On the nature of the galactic early-B hypergiants

Aims. Despite their importance to a number of astrophysical fields, the lifecycles of very massive stars are still poorly defined. In order to address this shortcoming, we present a detailed quantitative study of the physical properties of four early-B hypergiants (BHGs) of spectral type B1-4 Ia+; Cyg OB2 #12, ζ1 Sco, HD 190603 and BP Cru. These are combined with an analysis of their long-term spectroscopic and photometric behaviour in order to determine their evolutionary status. Methods. Quantitative analysis of UV–radio photometric and spectroscopic datasets was undertaken with a non-LTE model atmosphere code in order to derive physical parameters for comparison with apparently closely related objects, such as B supergiants (BSGs) and luminous blue variables (LBVs), and theoretical evolutionary predictions. Results. The long-term photospheric and spectroscopic datasets compiled for the early-B HGs revealed that they are remarkably stable over long periods ( ≥ 40 yrs), with the possible exception of ζ1 Sco prior to the 20th century; in contrast to the typical excursions that characterise LBVs. Quantitative analysis of ζ1 Sco, HD 190603 and BP Cru yielded physical properties intermediate between BSGs and LBVs; we therefore suggest that BHGs are the immediate descendants and progenitors (respectively) of such stars, for initial masses in the range ~30−60 M⊙. Comparison of the properties of ζ1 Sco with the stellar population of its host cluster/association NGC 6231/Sco OB1 provides further support for such an evolutionary scenario. In contrast, while the wind properties of Cyg OB2 #12 are consistent with this hypothesis, the combination of extreme luminosity and spectroscopic mass (~110 M⊙) and comparatively low temperature means it cannot be accommodated in such a scheme. Likewise, despite its co-location with several LBVs above the Humphreys-Davidson (HD) limit, the lack of long term variability and its unevolved chemistry apparently excludes such an identification. Since such massive stars are not expected to evolve to such cool temperatures, instead traversing an O4-6Ia → O4-6Ia+ → WN7-9ha pathway, the properties of Cyg OB2 #12 are therefore difficult to understand under current evolutionary paradigms. Finally, we note that as with AG Car in its cool phase, despite exceeding the HD limit, the properties of Cyg OB2 #12 imply that it lies below the Eddington limit – thus we conclude that the HD limit does not define a region of the HR diagram inherently inimical to the presence of massive stars.

Identificación, análisis y mejora de actividades docentes y discentes en la clase de traducción general A-B-A

En el presente trabajo se presentan los resultados obtenidos en un proyecto de redes de innovación docente cuyo objetivo era identificar y analizar las actividades desarrolladas en el seno buena parte de las 18 asignaturas de traducción general B-A-B ofertadas en el Grado en Traducción e Interpretación de la Universidad de Alicante. Partiendo de la contextualización de las asignaturas, tanto dentro del plan de estudios en vigor como en relación a la literatura existente en los Estudios de Traducción, se procederá a presentar algunos de los resultados más destacados en torno a los tres ejes de trabajo en que se organizaron las actividades de la red: tipologías textuales empleadas en las distintas asignaturas, integración y utilización de plataformas docentes en el desarrollo de las asignaturas y sistemas de evaluación de conocimientos empleados. A partir de todos estos datos se extraerán una serie de conclusiones generales y se harán propuestas de mejora y continuidad del proyecto de red para el futuro.

Letter from William Croswell to Mr. B, [ca. 1829]

Draft of a letter regarding Croswell's study of the New Testament.

Amherst, Massachusetts, 1833 (Raster Image)

This layer is a georeferenced raster image of the historic paper map entitled: A map of Amherst with a view of the college and Mount Pleasant Institution, by Alonzo Gray & Charles B. Adams. It was published by Pendleton's Lithography, 1833. Scale [1:20,000].The image inside the map neatline is georeferenced to the surface of the earth and fit to the Massachusetts State Plane Coordinate System, Mainland Zone (in Feet) (Fipszone 2001). All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, or other information associated with the principal map. This map shows features such as roads, drainage, public buildings, schools, churches, industry locations (e.g. mills, factories, mines, etc.), land cover, private buildings with names of property owners, and more. Relief shown by hachures. Includes notes on the history of Amherst and Amherst College; illustrated views of Mount Pleasant Institution and Amherst College; explanation of symbols (legend).This layer is part of a selection of digitally scanned and georeferenced historic maps of Massachusetts from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of regions, originators, ground condition dates (1755-1922), scales, and purposes. The digitized selection includes maps of: the state, Massachusetts counties, town surveys, coastal features, real property, parks, cemeteries, railroads, roads, public works projects, etc.

Regulation of Nuclear Factor κB (NF-κB) Transcriptional Activity via p65 Acetylation by the Chaperonin Containing TCP1 (CCT)

The NF-κB family member p65 is central to inflammation and immunity. The purpose of this study was to identify and characterize evolutionary conserved genes modulating p65 transcriptional activity. Using an RNAi screening approach, we identified chaperonin containing TCP1 subunit η (CCTη) as a regulator of Drosophila NF-κB proteins, Dorsal and Dorsal-related immunity factor (Dif). CCTη was also found to regulate NF-κB-driven transcription in mammalian cells, acting in a promoter-specific context, downstream of IκB kinase (IKK). CCTη knockdown repressed IκBα and CXCL2/MIP2 transcription during the early phase of NF-κB activation while impairing the termination of CCL5/RANTES and CXCL10/IP10 transcription. The latter effect was associated with increased DNA binding and reduced p65 acetylation, presumably by altering the activity of histone acetyltransferase CREB-binding protein (CBP). We identified p65 lysines (K) 122 and 123 as target residues mediating the CCTη-driven termination of NF-κB-dependent transcription. We propose that CCTη regulates NF-κB activity in a manner that resolves inflammation.

Quatuor sur le nom B-la-F : pour deux violons, alto, et violoncelle /

For 2 violins, viola, and violoncello.

Memoirs and correspondence of Field-Marshal Viscount Combermere, G. C. B., etc., from his family papers.

Mode of access: Internet.

Quodlibetum Coloniense De fraternitate S. Rosarii B. V. Mariae /

Mode of access: Internet.

J. E. B. Stuart (major-general) commander of the cavalry corps, Army of northern Virginia, C. S. A.; an address delivered at the unveiling of the equestrian statue of General Stuart, at Richmond, Virginia, May 30, 1907.

Mode of access: Internet.

Appendix Tractatus VI Cursus Salmanticensis Moralis F.F. Discalceatorum B. Mariae de Monte Carmelo ... de Bulla Sanctae Cruciatae eiusque privilegiis ... : opus posthumum a ... Fr. Joseph a Iesu Maria /

Mode of access: Internet.

Breve descripcion del cólera-morbo oriental, que se padeció en Sevilla en los meses de setiembre, octubre y parte de noviembre del año de 1833 /

Mode of access: Internet.

Historia de la epidemia llamada cólera-morbo, que ha sufrido Sevilla en el año de 1833, seguida de algunas reflexiones sobre el variado asiento, naturaleza y método curativo de esta enfermedad, y sobre la controvertida cuestion del contagio /

Mode of access: Internet.

Dissertatio apologetica mariano-candida : in qua de constanti revelatione candidi habitus praemonstratensis per Dei-param, De Immaculatae Conceptionis B. Mariae Virginis antiquo preamonstr. cultu, De Marianis Ecclesiis & specialibus cultoribus Norbertinis ad ... abbatem D. Fr. Ludovicum Carolum Hugo /

Mode of access: Internet.

Vida y martyrio del B. San Iosaphat Kuncevicz, arzobispo de Polocia ... del Orden de San Basilio Magno /

Mode of access: Internet.

Compendio de la vida del beato Fr. Miguel de los Santos, religioso de la Descalcez del Sagrado Orden de la Santisima Trinidad ... /

Mode of access: Internet.