Deep radio images of the HEGRA and Whipple TeV sources in the Cygnus OB2 region.

The modern generation of Cherenkov telescopes has revealed a new population of gamma-ray sources in the Galaxy. Some of them have been identified with previously known X-ray binary systems while other remain without clear counterparts a lower energies. Our initial goal here was reporting on extensive radio observations of the first extended and yet unidentified source, namely TeV J2032+4130. This object was originally detected by the HEGRA telescope in the direction of the Cygnus OB2 region and its nature has been a matter of debate during the latest years. The situation has become more complex with the Whipple and MILAGRO telescopes new TeV detections in the same field which could be consistent with the historic HEGRA source, although a different origin cannot be ruled out. Aims.We aim to pursue our radio exploration of the TeV J2032+4130 position that we initiated in a previous paper but taking now into account the latest results from new Whipple and MILAGRO TeV telescopes. The data presented here are an extended follow up of our previous work. Methods.Our investigation is mostly based on interferometric radio observations with the Giant Metre Wave Radio Telescope (GMRT) close to Pune (India) and the Very Large Array (VLA) in New Mexico (USA). We also conducted near infrared observations with the 3.5 m telescope and the OMEGA2000 camera at the Centro Astronómico Hispano Alemán (CAHA) in Almería (Spain). Results.We present deep radio maps centered on the TeV J2032+4130 position at different wavelengths. In particular, our 49 and 20 cm maps cover a field of view larger than half a degree that fully includes the Whipple position and the peak of MILAGRO emission. Our most important result here is a catalogue of 153 radio sources detected at 49 cm within the GMRT antennae primary beam with a full width half maximum (FWHM) of 43 arc-minute. Among them, peculiar sources inside the Whipple error ellipse are discussed in detail, including a likely double-double radio galaxy and a one-sided jet source of possible blazar nature. This last object adds another alternative counterpart possibility to be considered for both the HEGRA, Whipple and MILAGRO emission. Moreover, our multi-configuration VLA images reveal the non-thermal extended emission previously reported by us with improved angular resolution. Its non-thermal spectral index is also confirmed thanks to matching beam observations at the 20 and 6 cm wavelengths.

Patrimoni Digital de Catalunya, a year and a half experience

E-repositories are part of the e-science, and they are based on the e-infrastructure. The Centre de Supercomputació de Catalunya (CESCA) together with the Consorci de Biblioteques Universitàries de Catalunya (CBUC) started in 1999 a cooperative repository, named TDR, to file, in digital format, the full-text of the read thesis at the universities of our country in order to spread them worldwide in open access, while at the same time, preserving the intellectual copyright of the authors. Since then, four additional cooperative repositories have been created: RECERCAT for research papers; RACO for scientific, cultural and erudite Catalan magazines; MDC for Catalan digital collections of pictures, maps, posters and old magazines; and PADICAT for archiving Catalan digital web content; The main objective of the latter is to archive Catalan web sites. That is, PADICAT collects, processes and provides permanent access to the entire cultural, scientific and general output of Catalonia in digital format. The repository manager is the Biblioteca de Catalunya, as the institution responsible for compiling, processing and distributing the bibliographic heritage of Catalonia, while CESCA is the technology partner. On September 11th, 2006 the repository went into operation for the general public, with some thirty websites archived. After one year and a half, it has 2.720 captures of more than 1.000 websites. This includes 34 million files (HTML, images...) and two terabytes of data. The objective of this paper is to present PADICAT and our experience developing and managing it.We describe the repository briefly, we explain the technology used to implement it and we comment our experiences during its first year and a half.

From Full stopping to transparency in a holographic model of heavy ion collisions

We numerically simulate planar shock wave collisions in anti-de Sitter space as a model for heavy ion collisions of large nuclei. We uncover a crossover between two different dynamical regimes as a function of the collision energy. At low energies the shocks first stop and then explode in a manner approximately described by hydrodynamics, in close similarity with the Landau model. At high energies the receding fragments move outwards at the speed of light, with a region of negative energy density and negative longitudinal pressure trailing behind them. The rapidity distribution of the energy density at late times around midrapidity is not approximately boost invariant but Gaussian, albeit with a width that increases with the collision energy.

1st National Accessiblity Plan 2004-2012: achieving equal opportunities and full participation through design for all

According to official statistics, disabled people in Spain number 3.5 million and make up 8.8% of the Spanish population. This group of people are increasingly being recognised as members of society with equal rights, and many of their demands are gradually being transformed into solutions that benefit society as a whole. One example is improved accessibility. Accessible built environments are more human and inclusive places, as well as being easier to get around. Improved accessibility is now recognised as a requirement shared by all members of society, although it is achieved thanks to the demands of disabled people and their representatives. The 1st National Accessibility Plan is a strategic framework for action aimed at ensuring that new products, services and built environments are designed to be accessible for as many people as possible (Design for All) and that existing ones are gradually duly adapted.

Full Tècnic. Conreus Extensius. Comarques de Girona, núm. 1 (2006)

- Resultats de les noves varietats de blat tou. - Recomanació de varietats de blat tou. - Característiques agronòmiques de les varietats recomanades.

Full Tècnic. Conreus Extensius. Comarques de Girona, núm. 2 (2006)

- Resultats de les noves varietats d’ordi. - Recomanació de varietats d’ordi. - Característiques agronòmiques de les varietats recomanades.

Full Tècnic. Conreus Extensius. Comarques de Girona, núm. 3 (2006)

- Resultats de les noves varietats de triticale per a gra. - Recomanació de varietats de triticale per a gra. - Característiques agronòmiques de les varietats de triticale. - Aspectes a considerar en l’elecció de les varietats de triticale per a gra.

Full Tècnic. Conreus Extensius. Comarques de Girona, núm. 4 (2006)

- Resultats de les noves varietats de pèsol proteaginós de primavera per a gra. - Característiques agronòmiques de les varietats de pèsol proteaginós de primavera. - Aspectes a considerar en l’elecció de les varietats de pèsol proteaginós.

Full Tècnic. Conreus Extensius. Comarques de Girona, núm. 7 (2007)

- Rovell groc del blat. - Rovell bru del blat. - Fungicides pel control dels rovells del blat.

Full informatiu. Cultius extensius - Març 2007

- Recomanacions de fertilització per a la sembra del blat de moro. - Dosis agronòmiques d’aplicació de fems i purins. - Jornada intercomarcal sobre cereal d’hivern a Manresa. - Recomanacions per a la cobertora del cereal d’hivern.

Full Tècnic. Conreus Extensius. Comarques de Girona, núm. 6 (2007)

Es presenta un resum dels resultats dels assaigs d’avaluació de varietats de blat de moro de cicle 700 i 600, obtinguts en la zona litoral de Girona, en el marc de la Xarxa d’Experimentació de Varietats de l’IRTA. S’han assajat híbrids convencionals i transgènics derivats del MON810, que incorporen resistència als barrinadors. Amb els resultats de quatre anys d’assaig han destacat principalment les varietats HELEN, ELEONORA, TIETAR, PR32R42, ASTURIAL i PR33P66, sense diferències significatives entre elles. Les varietats transgèniques s’han assajat un màxim de tres anys havent mostrat algunes d’elles una alta productivitat. Entre aquestes han destacat PR32P76, DKC6575, PR33P67 i HELEN Bt, si bé sense diferències significatives amb el testimoni ELEONORA. També amb els resultats de tres anys d’assaig cal remarcar la varietat de blat de moro convencional PR32W86, que ha mostrat un nivell productiu similar a les millors transgèniques. Amb només dos anys d’assaig ha destacat principalment la varietat transgènica BELES SUR.

Full Tècnic. Conreus Extensius. Comarques de Girona, núm. 9 (2007)

Es presenta un resum dels resultats dels assaigs d’avaluació de varietats de blat tou obtinguts en el marc de la Xarxa d’Experimentació de Varietats de l’IRTA.