Diferentes técnicas de integración paisajística en carreteras. Análisis de eficacia a través de la percepción de observadores.

En el trabajo que se expone en este artículo se planteó como objetivo realizar un análisis de las diferentes medidas de integración paisajística que se utilizan en las autopistas y autovías españolas. Para ello, se ha realizado una revisión bibliográfica de la normativa, la documentación científica, las guías y demás recomendaciones en este ámbito, y se ha efectuado un inventario fotográfico que recoge las medidas de restauración observadas en las diferentes vías. Gracias a una encuesta fotográfica y al posterior análisis de la percepción del público de las diferentes medidas de integración, se han identificado las variables medioambientales clave en la integración de las autopistas en el paisaje, los aspectos de diseño más adecuados y las medidas de integración paisajística más efectivas

Performing innocence: violence and the nation in Ian McEwan’s Saturday and Sunjeev Sahota’s Ours Are the Streets

British normative society and post-9/11 fiction borrow from the discourse of American exceptionalism (including the fall from innocence to experience, the desire to create or preserve a better world, a ‘Messianic consciousness’ reflecting the arrogance of virtue, the development of narratives of heroism and goodness tied to nation-building, and the use of the above to justify ‘exemptionalism’) to expose and query the entitlement of those within the narrative home of Britishness and the outsider-status of those used to define its borders. This article discusses Ian McEwan’s Saturday and Sunjeev Sahota’s Ours Are the Streets, arguing that they illustrate a turning point in Britain’s imagination of itself as a nation in a struggle over Britishness which is predicated on notions of violence and innocence. Since 9/11 the debate about Britishness has used innocence as a constitutive inside of the nation and direct violence as an exclusionary characteristic. McEwan satirizes this rhetoric of innocence whereas Sahota challenges it. Both novels illustrate how post-9/11 British fiction deals with politics as war, placing violence at the heart of society. McEwan parodies the point of view of British normative society by allowing his main character to justify his privileged position under the guise of arguing for the current social and international status quo. Sahota charts the journey of those who are caught between the rejection of unjust social structures and the desire to fit within them, depicting his protagonist’s misguided attempt to redefine the British nation through terrorism. Violence and exceptionalism are central to both novels, which portray a turn in the imagining of Britain. The events of 9/11 can therefore be seen not just as a historical turning point but as a turn in Britain’s imagination of itself

An ALMA Search for Substructure, Fragmentation, and Hidden Protostars in Starless Cores in Chamaeleon I

We present an Atacama Large Millimeter/submillimeter Array (ALMA) 106 GHz (Band 3) continuum survey of the complete population of dense cores in the Chamaeleon I molecular cloud. We detect a total of 24 continuum sources in 19 different target fields. All previously known Class 0 and Class I protostars in Chamaeleon I are detected, whereas all of the 56 starless cores in our sample are undetected. We show that the Spitzer+Herschel census of protostars in Chamaeleon I is complete, with the rate at which protostellar cores have been misclassified as starless cores calculated as <1/56, or < 2%. We use synthetic observations to show that starless cores collapsing following the turbulent fragmentation scenario are detectable by our ALMA observations when their central densities exceed ~10^8 cm^-3, with the exact density dependent on the viewing geometry. Bonnor-Ebert spheres, on the other hand, remain undetected to central densities at least as high as 10^10 cm^-3. Our starless core non-detections are used to infer that either the star formation rate is declining in Chamaeleon I and most of the starless cores are not collapsing, matching the findings of previous studies, or that the evolution of starless cores are more accurately described by models that develop less substructure than predicted by the turbulent fragmentation scenario, such as Bonnor-Ebert spheres. We outline future work necessary to distinguish between these two possibilities.Comment: Accepted by Ap

CARMA Large Area Star Formation Survey: Project Overview with Analysis of Dense Gas Structure and Kinematics in Barnard 1

We present details of the CARMA Large Area Star Formation Survey (CLASSy), while focusing on observations of Barnard 1. CLASSy is a CARMA Key Project that spectrally imaged N2H+, HCO+, and HCN (J=1-0 transitions) across over 800 square arcminutes of the Perseus and Serpens Molecular Clouds. The observations have angular resolution near 7" and spectral resolution near 0.16 km/s. We imaged ~150 square arcminutes of Barnard 1, focusing on the main core, and the B1 Ridge and clumps to its southwest. N2H+ shows the strongest emission, with morphology similar to cool dust in the region, while HCO+ and HCN trace several molecular outflows from a collection of protostars in the main core. We identify a range of kinematic complexity, with N2H+ velocity dispersions ranging from ~0.05-0.50 km/s across the field. Simultaneous continuum mapping at 3 mm reveals six compact object detections, three of which are new detections. A new non-binary dendrogram algorithm is used to analyze dense gas structures in the N2H+ position-position-velocity (PPV) cube. The projected sizes of dendrogram-identified structures range from about 0.01-0.34 pc. Size-linewidth relations using those structures show that non-thermal line-of-sight velocity dispersion varies weakly with projected size, while rms variation in the centroid velocity rises steeply with projected size. Comparing these relations, we propose that all dense gas structures in Barnard 1 have comparable depths into the sky, around 0.1-0.2 pc; this suggests that over-dense, parsec-scale regions within molecular clouds are better described as flattened structures rather than spherical collections of gas. Science-ready PPV cubes for Barnard 1 molecular emission are available for download.Comment: Accepted to The Astrophysical Journal (ApJ), 51 pages, 27 figures (some with reduced resolution in this preprint); Project website is at http://carma.astro.umd.edu/class

Petrología aplicada a la Conservación del Patrimonio

4 páginas. Ed. Miguel Ángel Rogerio Candelera y Cesáreo Sáiz Jiménez. Primera Reunión de la Red de Ciencia y Tecnología para la Conservación del Patrimonio (Madrid, 28-29 de junio de 2011).El grupo de Petrología Aplicada a la Conservación del Patrimonio (PAP) está constituido por investigadores del CSIC y de la UCM, que pertenecen al Instituto de Geociencias. Este instituto, creado en 2011, es una transformación del antiguo Instituto de Geología Económica (CSIC-UCM), del cual procede este grupo de investigación con más de 25 años de experiencia en la conservación del patrimonio cultural, principalmente del patrimonio arquitectónico y arqueológico realizado en piedra. El grupo participa en los estudios previos y en los realizados durante la fase de ejecución del proyecto de diferentes intervenciones encaminadas a la restauración y conservación del patrimonio (www.conservacionpatrimonio.es).Programas Geomateriales (S2009/MAT-1629) y CONSOLIDER-TCP (CSD2007-0058) y a la financiación de Grupo de Investigación de la UCM, "Alteración y Conservación de los Materiales Pétreos del Patrimonio" (ref. 921349).Peer reviewe

Trim17, novel E3 ubiquitin-ligase, initiates neuronal apoptosis

Accumulating data indicate that the ubiquitin-proteasome system controls apoptosis by regulating the level and the function of key regulatory proteins. In this study, we identified Trim17, a member of the TRIM/RBCC protein family, as one of the critical E3 ubiquitin ligases involved in the control of neuronal apoptosis upstream of mitochondria. We show that expression of Trim17 is increased both at the mRNA and protein level in several in vitro models of transcription-dependent neuronal apoptosis. Expression of Trim17 is controlled by the PI3K/Akt/GSK3 pathway in cerebellar granule neurons (CGN). Moreover, the Trim17 protein is expressed in vivo, in apoptotic neurons that naturally die during post-natal cerebellar development. Overexpression of active Trim17 in primary CGN was sufficient to induce the intrinsic pathway of apoptosis in survival conditions. This pro-apoptotic effect was abolished in Bax(-/-) neurons and depended on the E3 activity of Trim17 conferred by its RING domain. Furthermore, knock-down of endogenous Trim17 and overexpression of dominant-negative mutants of Trim17 blocked trophic factor withdrawal-induced apoptosis both in CGN and in sympathetic neurons. Collectively, our data are the first to assign a cellular function to Trim17 by showing that its E3 activity is both necessary and sufficient for the initiation of neuronal apoptosis. Cell Death and Differentiation (2010) 17, 1928-1941; doi: 10.1038/cdd.2010.73; published online 18 June 201