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Sample records for argonaut barcelona reactor

  1. Decommissioning of an argonaut type reactor at the Technical University of Catalonia in Barcelona (Spain)

    International Nuclear Information System (INIS)

    The reactor ARGOS is a training nuclear reactor that was active, from 1962 to 1976, at the Technical University of Catalonia (UPC) in Barcelona (Spain). It is an Argonaut type experimental Reactor with 10 kW of maximal thermal power, and was set up by the main Spanish Nuclear Research Centre, presently named CIEMAT, in the period 1958-1962. In 1977, the nuclear installation was halted for technical, economical and administrative reasons. The fuel burn-up of the reactor was 2.7 kWh. In 1992 the fuel was removed from the site and a dismantling project was launched by an academic team of the UPC Nuclear Energy Department. In 1998 the Spanish authorities approved the dismantling plan which was based on the IAEA document Planning and Management of the Decommissioning of Research and Other Small Nuclear Facilities, IAEA 1993. In this plan the University proposed to set up its own dismantling group mainly based on its own academic staff and experimental facilities

  2. Argonaut type reactor for the best possible Phase Ia training of nuclear plant operators

    International Nuclear Information System (INIS)

    The Argonaut type reactor is an excellent training tool for the training of Electric Utility Nuclear Plant Operators. The training advantages of this type of reactor can best be seen by comparing its design characteristics to a typical large pressurized water reactor and other research/training reactors not necessary for reactor operator training are explained. Some minor modifications of the Argonaut at UCLA would prove valuable and are under consideration. A complete one week Phase Ia training program proposal has been made by UCLA to selected utilities and a summary of this program is presented

  3. The Siemens-Argonaut reactor as a driver zone for a high-temperature reactor cell. Der Siemens-Argonaut-Reaktor als Treiberzone fuer eine Hochtemperaturreaktorzelle

    Energy Technology Data Exchange (ETDEWEB)

    Mueller, H.; Schuerrer, F.; Ninaus, W.; Oswald, K.; Rabitsch, H.; Kreiner, H. (Technische Univ., Graz (Austria). Inst. fuer Theoretische Physik und Reaktorphysik); Neef, R.D. (Kernforschungsanlage Juelich G.m.b.H. (Germany, F.R.). Inst. fuer Reaktorentwicklung)

    1984-12-15

    To enable a validation of neutron physics calculation methods for pebble bed reactors the inner reflector of an Argonaut research reactor was substituted by a full of about 1200 fuel elements of the AVR-Juelich type. The report describes the measuring instruments and the reactor physical layout of the arrangement by the code packages GAMTEREX, ZUT-D.G.L. and MUPO. Comparison of calculated reaction rates with measurements show good agreement. Application of the codes to high-temperature reactors in abnormal states is envisaged. (Author, translated by G.Q.)

  4. Report on the interpretation of critical experiments in the Siemens-Argonaut-Reactor Graz to study water ingress into spherical elements. Ergebnisbericht zur Auslegung kritischer Experimente am Siemens-Argonaut-Reaktor Graz zum Studium des Wassereinbruches im Kugelhaufen

    Energy Technology Data Exchange (ETDEWEB)

    Schuerrer, F. (Technische Univ., Graz (Austria). Inst. fuer Theoretische Physik und Reaktorphysik); Neef, R.D. (Kernforschungsanlage Juelich G.m.b.H. (Germany, F.R.). Inst. fuer Reaktorentwicklung)

    1979-04-15

    The experiments described are of interest in the study of water contamination in HTR fuel elements. The Siemens Argonaut Reactor (SAR) has been considered as a research tool for a simulation experiment. Following a brief description of the SAR, planned programs are discussed in 'dry' and 'wet' cores. Detector foil types and locations are noted. A theoretical model is developed and nuclide concentrations estimated in the various spectral zones. Reactivity calculations have been made and are summarised for various H{sub 2}O percentage concentrations. The discussion is supported by simplified core layout diagrams and graphs of core flux distributions. Neutron diffusion and spectra calculations are referenced to computer programs used by KFA-Juelich, published elsewhere, and include GAM, THERMOS, MUPO and EXTERMINATOR-2. (G.C.)

  5. The evolutionary journey of Argonaute proteins

    NARCIS (Netherlands)

    Swarts, D.C.; Makarova, K.; Wang, Y.; Nakanishi, K.; Ketting, R.F.; Koonin, E.V.; Patel, D.J.; Oost, van der J.

    2014-01-01

    Argonaute proteins are conserved throughout all domains of life. Recently characterized prokaryotic Argonaute proteins (pAgos) participate in host defense by DNA interference, whereas eukaryotic Argonaute proteins (eAgos) control a wide range of processes by RNA interference. Here we review molecula

  6. Argonaute and Argonaute-Bound Small RNAs in Stem Cells

    Directory of Open Access Journals (Sweden)

    Lihong Zhai

    2016-02-01

    Full Text Available Small RNAs are essential for a variety of cellular functions. Argonaute (AGO proteins are associated with all of the different classes of small RNAs, and are indispensable in small RNA-mediated regulatory pathways. AGO proteins have been identified in various types of stem cells in diverse species from plants and animals. This review article highlights recent progress on how AGO proteins and AGO-bound small RNAs regulate the self-renewal and differentiation of distinct stem cell types, including pluripotent, germline, somatic, and cancer stem cells.

  7. Modeling and analysis of Schistosoma Argonaute protein molecular spatial conformation

    Directory of Open Access Journals (Sweden)

    Jianhua Zhang

    2011-08-01

    Conclusions: The information relationship between the structure and function of the Argonaute protein can be initially established with bioinformatics tools and the internet server, and this provides the theoretical basis for further clarifying the function of Schistosoma Argonaute protein.

  8. The Crystal Structure of Human Argonaute2

    Energy Technology Data Exchange (ETDEWEB)

    Schirle, Nicole T.; MacRae, Ian J. (Scripps)

    2012-07-18

    Argonaute proteins form the functional core of the RNA-induced silencing complexes that mediate RNA silencing in eukaryotes. The 2.3 angstrom resolution crystal structure of human Argonaute2 (Ago2) reveals a bilobed molecule with a central cleft for binding guide and target RNAs. Nucleotides 2 to 6 of a heterogeneous mixture of guide RNAs are positioned in an A-form conformation for base pairing with target messenger RNAs. Between nucleotides 6 and 7, there is a kink that may function in microRNA target recognition or release of sliced RNA products. Tandem tryptophan-binding pockets in the PIWI domain define a likely interaction surface for recruitment of glycine-tryptophan-182 (GW182) or other tryptophan-rich cofactors. These results will enable structure-based approaches for harnessing the untapped therapeutic potential of RNA silencing in humans.

  9. Domain motions of Argonaute, the catalytic engine of RNA interference

    OpenAIRE

    Wall Michael E; Ming Dengming; Sanbonmatsu Kevin Y

    2007-01-01

    Abstract Background The Argonaute protein is the core component of the RNA-induced silencing complex, playing the central role of cleaving the mRNA target. Visual inspection of static crystal structures already has enabled researchers to suggest conformational changes of Argonaute that might occur during RNA interference. We have taken the next step by performing an all-atom normal mode analysis of the Pyrococcus furiosus and Aquifex aeolicus Argonaute crystal structures, allowing us to quant...

  10. Modeling and analysis of Schistosoma Argonaute protein molecular spatial conformation

    Institute of Scientific and Technical Information of China (English)

    Jianhua Zhang; Zhigang Shang; Xiaohui Zhang; Yuntao Zhang

    2011-01-01

    Objective: To analyze the amino acid sequence composition, secondary structure, the spatial conformation of its domain and other characteristics of Argonaute protein. Methods:Bioinformatics tools and the internet server were used. Firstly, the amino acid sequence composition features of the Argonaute protein were analyzed, and the phylogenetic tree was constructed. Secondly, Argonaute protein’s distribution of secondary structure and its physicochemical properties were predicted. Lastly, the protein functional expression form of the domain group was established through the Phyre-based analysis on the spatial conformation of Argonaute protein domains. Results: 593 amino acids were encoded by Argonaute protein, the phylogenetic tree was constructed, and Argonaute protein’s distribution of secondary structure and its physicochemical properties were obtained through analysis. In addition, the functional expression form which comprised the N-terminal PAZ domain and C-terminal Piwi domain for the Argonaute protein was obtained with Phyre. Conclusions: The information relationship between the structure and function of the Argonaute protein can be initially established with bioinformatics tools and the internet server, and this provides the theoretical basis for further clarifying the function of Schistosoma Argonaute protein.

  11. Spent fuel situation at the ASTRA Seibersdorf and the TRIGA Vienna research reactors

    International Nuclear Information System (INIS)

    In the past decades Austria operated three research reactors, the 10 MW ASTRA reactor at Seibersdorf, the 250 kW TRIGA reactor at the Atomic Institut Vienna and the 1 kW Argonaut reactor at the Technical University in Graz. Since the shut down on July 31st, 1999 and decommissioning of the ASTRA reactor and the shut down of the ARGONAUT reactor Graz on July 31, 2004 only the TRIGA reactor remains operational. The MTR fuel elements of the ASTRA reactor have been shipped in spring 2001 to Savannah River and the fuel plates from the ARGONAUT reactor Graz in December 2005 under the DOE fuel return programme. (author)

  12. Saalivalvurid varastavad ka Barcelonas

    Index Scriptorium Estoniae

    2000-01-01

    Hispaania politsei tabas Barcelona Arheoloogiamuuseumi saalivalvuri Manuel Gasca, kes varastas muuseumi hoidlaist umbes 35 miljoni Eesti krooni ulatuses vana-egiptuse, foiniikia, etruski ja vana-rooma arheoloogilisi leide (mündid, keraamika, skulptuur jt.) ning itaalia graafiku Giambattista Piranesi 150 gravüüri.

  13. Regulated Proteolysis of Arabidopsis Argonaute1

    DEFF Research Database (Denmark)

    Kausika, Swathi Pranavi

    domain as a bait in yeast two-hybrid screen to identify interactors. We found several candidates, of which many bound preferentially to AGO1 and were known to be integral or peripheral membrane proteins. Further investigations into interactors led us to discover that some of them play a role......Argonaute (AGO) proteins are key effectors of RNA Induced Silencing Complex (RISC) that mediates RNA interference or gene silencing. AGO binds small RNA and uses base pairing to small RNA to bring about repression of specific, complementary target RNA by cleavage or translational repression....... These are large multi domain proteins found in both eukaryotes and prokaryotes. They consist of four domains namely N, PAZ, MID and PIWI domain. The PAZ and MID domains bind small RNA 3´ and 5´ends while the PIWI domain harbors the endonucleolytic activity responsible for target RNA cleavage. This study focuses...

  14. Time and myth: the Argonauts in Ljubljana

    Directory of Open Access Journals (Sweden)

    Ana María Sánchez Tarrío

    2012-12-01

    Full Text Available This papers gives a breif overview of research in its initial phases, which examines, from the perspective of the construction of national identity, the traditional theme of the enduring and timeless nature of Classical myths and in particular the ancient myth, which is the subject of Borges’s sharp irony in his short-story “The immortal”. The reception of the Argonauts myth in Slovenian culture, initiated by the work of Janez Vajkard or Johann Weichard Freiherr von Valvasor (1641–1693, offers a significant case-study, which also highlights the relevance of Humanist and Baroque culture in the critical history of European nationalism. Writing before the emergence in Europe of the Hegelian conception of “Volkgeist”, the polymath writer applied a humanistic approach to patriotic themes, revealing Slovene culture, hybrid from its origins, to the wider world. A characteristic feature of his approach was the fusion of earlier textual tradition with contemporary oral material. Both in Slovenia and in the rest of Europe the comparison of the nineteenth century treatment of material dealing with national identity with its earlier treatment and transmission by humanist writers highlights the importance of the 16th and 17th centuries in the configuration of the different national faces of Europe as well as the significant role of common Greek and Latin roots. As a result, the myth of the Argonauts in Ljubljana, against the backdrop of idealistic or essentialist nationalist faiths, has the not inconsiderable virtue of underscoring the contaminatio that is characteristic of the construction of national identity.

  15. Barcelona A ja B = Barcelona A and B / Inga Raukas

    Index Scriptorium Estoniae

    Raukas, Inga, 1967-

    2006-01-01

    Barcelona arendamisest. Herzog ja de Meuroni büroos kavandatud Foorumi näitusekeskuses 2006. a. märtsist juuni alguseni avatud näitusest "Barcelona in Progress", mis püüab haarata eduloo ajalugu ja tulevikku. Bibliograafia lk. 71

  16. Physical Science in Barcelona

    OpenAIRE

    Roqué, Xavier; Roca Rosell, Antoni

    2013-01-01

    We provide a tour of Barcelona, Catalonia, Spain, following four routes through the city and one elsewhere in the city and beyond, focusing on sites of importance in physics. Route 1 covers the Old Town, its Gothic Quarter, Plac ̧a del Rei , Plac ̧a de Sant Jaume , and Jewish Quarter. Route 2 identifies sites on and close to La Rambla , the main promenade in the city. Route 3 goes from the medieval shipyards to the Board of Commerce to Citadel Park. Route 4...

  17. @City: technologising Barcelona

    Directory of Open Access Journals (Sweden)

    Jesús Rojas

    2007-05-01

    Full Text Available This article is about the concept of the contemporary city - the influence that technology has when one thinks about, plans and lives in a city. The conjunction of  technology and city reformulates customs and social practices; it can even determine the way one constitutes one's own identity. One can see how close the relation is between technology (specifically, TICS and the structures of the city in a wide variety of situations: in social interactions on the street, in transport, and in ways of buying, of working and entertainment. "@City" is a concept that very well reflects  the emergent properties of a current city, that is, the coexistence of a physical and a virtual urban space. The "22@Barcelona" project attempts to bring together different types of spaces. By combining the physical with the virtual, 22@Barcelona, as a neighborhood of @City,  creates an uncertain and blurred border between both spaces.The article also examines the impact that these spaces have on the psycho-social processes involved in the daily life of a traditionally working-class neighborhood, now strongly limited by technological boundaries.

  18. @City: technologising Barcelona

    Directory of Open Access Journals (Sweden)

    Rojas, Jesús

    2007-05-01

    Full Text Available This article is about the concept of the contemporary city - the influence that technology has when one thinks about, plans and lives in a city. The conjunction of technology and city reformulates customs and social practices; it can even determine the way one constitutes one's own identity. One can see how close the relation is between technology (specifically, TICS and the structures of the city in a wide variety of situations: in social interactions on the street, in transport, and in ways of buying, of working and entertainment. "@City" is a concept that very well reflects the emergent properties of a current city, that is, the coexistence of a physical and a virtual urban space. The "22@Barcelona" project attempts to bring together different types of spaces. By combining the physical with the virtual, 22@Barcelona, as a neighborhood of @City, creates an uncertain and blurred border between both spaces.The article also examines the impact that these spaces have on the psycho-social processes involved in the daily life of a traditionally working-class neighborhood, now strongly limited by technological boundaries.

  19. Domain motions of Argonaute, the catalytic engine of RNA interference

    Directory of Open Access Journals (Sweden)

    Wall Michael E

    2007-11-01

    Full Text Available Abstract Background The Argonaute protein is the core component of the RNA-induced silencing complex, playing the central role of cleaving the mRNA target. Visual inspection of static crystal structures already has enabled researchers to suggest conformational changes of Argonaute that might occur during RNA interference. We have taken the next step by performing an all-atom normal mode analysis of the Pyrococcus furiosus and Aquifex aeolicus Argonaute crystal structures, allowing us to quantitatively assess the feasibility of these conformational changes. To perform the analysis, we begin with the energy-minimized X-ray structures. Normal modes are then calculated using an all-atom molecular mechanics force field. Results The analysis reveals low-frequency vibrations that facilitate the accommodation of RNA duplexes – an essential step in target recognition. The Pyrococcus furiosus and Aquifex aeolicus Argonaute proteins both exhibit low-frequency torsion and hinge motions; however, differences in the overall architecture of the proteins cause the detailed dynamics to be significantly different. Conclusion Overall, low-frequency vibrations of Argonaute are consistent with mechanisms within the current reaction cycle model for RNA interference.

  20. Nuevo estadio, en Barcelona

    Directory of Open Access Journals (Sweden)

    Soteras Mauri, J.

    1959-07-01

    Full Text Available El fútbol, en su paso de deporte a espectáculo deportivo, ha traído, como consecuencia, un mayor arrastre de las masas hacia' los recintos de juego. Debido a ello, todos los clubs españoles se han visto en la necesidad de ampliar o construir de nuevo sus instalaciones deportivas para poder albergar a esta ingente riada de espectadores. El Club de Fútbol Barcelona ha terminado recientemente la primera fase de su nuevo estadio con un aforo provisional de noventa mil espectadores y que, cuando esté acabado, tendrá capacidad para ciento cincuenta mil; o sea: será uno de los mayores del mundo. El proyecto ha sido estudiado minuciosamente, no sólo en esencia, sino en potencia, ya que el nuevo estadio Gamper se ha incorporado a la panorámica de la ciudad como uno de sus elementos característicos por razón de su masa, aislamiento y singularidad.

  1. NEWS: GIREP in Barcelona

    Science.gov (United States)

    Dobson, Ken

    2000-11-01

    The 18th biannual conference of GIREP was held in Barcelona from 27 August to 1 September 2000. GIREP stands for Groupe International de Recherche sur l'Enseignement de la Physique. Some 400 delegates from 53 countries attended the conference, whose main concern was Physics Teacher Education beyond 2000. All contributions had to made in English. A conference like this needs to be singularly interesting to keep delegates away from the sunsoaked attractions and delights of one of the most exciting cities in the world - even if some of the excitement comes from wondering whether or not you are going to get your pocket picked. A typical conference day begins with two or three plenary lectures in the morning, with the afternoon given over to a set of nine parallel sessions. These sessions consisted of tightly timetabled 20 minute talks or other types of presentation. This meant that even the most dedicated delegate could get to little more than 10% of the over 200 sessions that were on offer in the afternoons. The event was organized by Catalonian locals working at the conference site, the Universitat Autonoma de Barcelona, and was superbly smooth. The list of organizations supporting the conference is too long to record, but ranged from the European Commission to Barcelona Science Museum. The UK can boast (if that is the right word) just 11 paid-up members of GIREP, which at about £10 per annum is hardly an expensive club - next year it goes up to 20 Euros - and the fee is worth it for the excellently produced book or CD-ROM of the conference proceedings. These contain a great deal of wisdom, plus the fair amount of infuriating rubbish that tends to be generated by educational research. I write here with all the prejudices of an aged ex-teacher, of course. The first morning lecture was given by Jon Ogborn, who used his recent work as organizer of the IoP post-16 Initiative to give some details of the Advancing Physics AS and A2 and make some general points about

  2. Identification and characterization of Argonaute gene family and meiosis-enriched Argonaute during sporogenesis in maize

    Institute of Scientific and Technical Information of China (English)

    Zuxin Zhang

    2014-01-01

    Argonaute (AGO) proteins play a key role in regulation of gene expression through smal RNA‐directed RNA cleavage and translational repression, and are essential for multiple developmental processes. In the present study, 17 AGO genes of maize (Zea mays L., ZmAGOs) were identified using a Hidden Markov Model and validated by rapid amplifica-tion of cDNA ends assay. Subsequently, quantitative PCR revealed that expressions of these genes were higher in reproductive than in vegetative tissues. AGOs presented five temporal and spatial expression patterns, which were likely modulated by DNA methylation, 50‐untranslated exons and microRNA‐mediated feedback loops. Intriguingly, ZmAGO18b was highly expressed in tassels during meiosis. Furthermore, in situ hybridization and immunofluorescence showed that ZmA- GO18b was enriched in the tapetum and germ cel s in meiotic anthers. We hypothesized that ZmAGOs are highly expressed in reproductive tissues, and that ZmAGO18b is a tapetum and germ cel‐specific member of the AGO family in maize.

  3. ATLAS Overview Week 2009 Barcelona

    CERN Multimedia

    Claudia Marcelloni

    2009-01-01

    From October 5th to October 9th about 400 physicists from the ATLAS Collaboration met in Barcelona (Catalonia) to discuss the status of the experiment. The event was organized by the Institut de Física d'Altes Energies (IFAE), a member of the ATLAS Collaboration. Besides the Scientific program, few social events were organized, such as Reception at the Palau de Pedralbes, a visit to the Fundacio Joan Miro and a social dinner at Maremagnunm hall.

  4. Effects of Argonaute on Gene Expression in Thermus thermophilus.

    Directory of Open Access Journals (Sweden)

    Daan C Swarts

    Full Text Available Eukaryotic Argonaute proteins mediate RNA-guided RNA interference, allowing both regulation of host gene expression and defense against invading mobile genetic elements. Recently, it has become evident that prokaryotic Argonaute homologs mediate DNA-guided DNA interference, and play a role in host defense. Argonaute of the bacterium Thermus thermophilus (TtAgo targets invading plasmid DNA during and after transformation. Using small interfering DNA guides, TtAgo can cleave single and double stranded DNAs. Although TtAgo additionally has been demonstrated to cleave RNA targets complementary to its DNA guide in vitro, RNA targeting by TtAgo has not been demonstrated in vivo.To investigate if TtAgo also has the potential to control RNA levels, we analyzed RNA-seq data derived from cultures of four T. thermophilus strain HB27 variants: wild type, TtAgo knockout (Δago, and either strain transformed with a plasmid. Additionally we determined the effect of TtAgo on expression of plasmid-encoded RNA and plasmid DNA levels.In the absence of exogenous DNA (plasmid, TtAgo presence or absence had no effect on gene expression levels. When plasmid DNA is present, TtAgo reduces plasmid DNA levels 4-fold, and a corresponding reduction of plasmid gene transcript levels was observed. We therefore conclude that TtAgo interferes with plasmid DNA, but not with plasmid-encoded RNA. Interestingly, TtAgo presence stimulates expression of specific endogenous genes, but only when exogenous plasmid DNA was present. Specifically, the presence of TtAgo directly or indirectly stimulates expression of CRISPR loci and associated genes, some of which are involved in CRISPR adaptation. This suggests that TtAgo-mediated interference with plasmid DNA stimulates CRISPR adaptation.

  5. de Barcelona 1986-2001

    Directory of Open Access Journals (Sweden)

    Isabel Pujadas Rúbies

    2005-01-01

    Full Text Available El curso de vida de los hogares y de las personas van acompañados de cambios residenciales cada vez más frecuentes en las grandes áreas metropolitanas. Este artículo toma la Región Metropolitana de Barcelona como ejemplo para describir cómo los cambios sociodemográficos en los últimos decenios y los procesos de movilidad residencial inciden en la formación de un modelo territorial de los distintos tipos de hogares en las regiones metropolitanas.

  6. A multitasking Argonaute: exploring the many facets of C. elegans CSR-1.

    Science.gov (United States)

    Wedeles, Christopher J; Wu, Monica Z; Claycomb, Julie M

    2013-12-01

    While initial studies of small RNA-mediated gene regulatory pathways focused on the cytoplasmic functions of such pathways, identifying roles for Argonaute/small RNA pathways in modulating chromatin and organizing the genome has become a topic of intense research in recent years. Nuclear regulatory mechanisms for Argonaute/small RNA pathways appear to be widespread, in organisms ranging from plants to fission yeast, Caenorhabditis elegans to humans. As the effectors of small RNA-mediated gene regulatory pathways, Argonaute proteins guide the chromatin-directed activities of these pathways. Of particular interest is the C. elegans Argonaute, chromosome segregation and RNAi deficient (CSR-1), which has been implicated in such diverse functions as organizing the holocentromeres of worm chromosomes, modulating germline chromatin, protecting the genome from foreign nucleic acid, regulating histone levels, executing RNAi, and inhibiting translation in conjunction with Pumilio proteins. CSR-1 interacts with small RNAs known as 22G-RNAs, which have complementarity to 25 % of the protein coding genes. This peculiar Argonaute is the only essential C. elegans Argonaute out of 24 family members in total. Here, we summarize the current understanding of CSR-1 functions in the worm, with emphasis on the chromatin-directed activities of this ever-intriguing Argonaute.

  7. A multitasking Argonaute: exploring the many facets of C. elegans CSR-1.

    Science.gov (United States)

    Wedeles, Christopher J; Wu, Monica Z; Claycomb, Julie M

    2013-12-01

    While initial studies of small RNA-mediated gene regulatory pathways focused on the cytoplasmic functions of such pathways, identifying roles for Argonaute/small RNA pathways in modulating chromatin and organizing the genome has become a topic of intense research in recent years. Nuclear regulatory mechanisms for Argonaute/small RNA pathways appear to be widespread, in organisms ranging from plants to fission yeast, Caenorhabditis elegans to humans. As the effectors of small RNA-mediated gene regulatory pathways, Argonaute proteins guide the chromatin-directed activities of these pathways. Of particular interest is the C. elegans Argonaute, chromosome segregation and RNAi deficient (CSR-1), which has been implicated in such diverse functions as organizing the holocentromeres of worm chromosomes, modulating germline chromatin, protecting the genome from foreign nucleic acid, regulating histone levels, executing RNAi, and inhibiting translation in conjunction with Pumilio proteins. CSR-1 interacts with small RNAs known as 22G-RNAs, which have complementarity to 25 % of the protein coding genes. This peculiar Argonaute is the only essential C. elegans Argonaute out of 24 family members in total. Here, we summarize the current understanding of CSR-1 functions in the worm, with emphasis on the chromatin-directed activities of this ever-intriguing Argonaute. PMID:24178449

  8. Characterization of Argonaute-related small RNA pathways in Caenorhabditis elegans

    OpenAIRE

    Batista, Pedro Jorge de Oliveira Rodrigues

    2010-01-01

    Tese de doutoramento, Biologia (Genética), Universidade de Lisboa, Faculdade de Ciências, 2011 In Small-RNA-mediated pathways, small RNAs engage a protein of the Argonaute family and utilize base-pairing interactions to identify and regulate complementary genetic information. My research has focused on understanding how diverse classes of small RNAs in the model organism Caenorhabditis elegans interact with specific members of the Argonaute protein family to carry out unique bi...

  9. The influence of Argonaute proteins on alternative RNA splicing.

    Science.gov (United States)

    Batsché, Eric; Ameyar-Zazoua, Maya

    2015-01-01

    Alternative splicing of precursor RNAs is an important process in multicellular species because it impacts several aspects of gene expression: from the increase of protein repertoire to the level of expression. A large body of evidences demonstrates that factors regulating chromatin and transcription impact the outcomes of alternative splicing. Argonaute (AGO) proteins were known to play key roles in the regulation of gene expression at the post-transcriptional level. More recently, their role in the nucleus of human somatic cells has emerged. Here, we will discuss some of the nuclear functions of AGO, with special emphasis on alternative splicing. The AGO-mediated modulation of alternative splicing is based on several properties of these proteins: their binding to transcripts on chromatin and their interactions with many proteins, especially histone tail-modifying enzymes, HP1γ and splicing factors. AGO proteins may favor a decrease in the RNA-polymerase II kinetics at actively transcribed genes leading to the modulation of alternative splicing decisions. They could also influence alternative splicing through their interaction with core components of the splicing machinery and several splicing factors. We will discuss the modes of AGO recruitment on chromatin at active genes. We suggest that long intragenic antisense transcripts (lincRNA) might be an important feature of genes containing splicing events regulated by AGO.

  10. Variation and Evolution in the Glutamine-Rich Repeat Region of Drosophila Argonaute-2.

    Science.gov (United States)

    Palmer, William H; Obbard, Darren J

    2016-01-01

    RNA interference pathways mediate biological processes through Argonaute-family proteins, which bind small RNAs as guides to silence complementary target nucleic acids . In insects and crustaceans Argonaute-2 silences viral nucleic acids, and therefore acts as a primary effector of innate antiviral immunity. Although the function of the major Argonaute-2 domains, which are conserved across most Argonaute-family proteins, are known, many invertebrate Argonaute-2 homologs contain a glutamine-rich repeat (GRR) region of unknown function at the N-terminus . Here we combine long-read amplicon sequencing of Drosophila Genetic Reference Panel (DGRP) lines with publicly available sequence data from many insect species to show that this region evolves extremely rapidly and is hyper-variable within species. We identify distinct GRR haplotype groups in Drosophila melanogaster, and suggest that one of these haplotype groups has recently risen to high frequency in a North American population. Finally, we use published data from genome-wide association studies of viral resistance in D. melanogaster to test whether GRR haplotypes are associated with survival after virus challenge. We find a marginally significant association with survival after challenge with Drosophila C Virus in the DGRP, but we were unable to replicate this finding using lines from the Drosophila Synthetic Population Resource panel.

  11. Extreme flash floods in Barcelona County

    Directory of Open Access Journals (Sweden)

    A. Barrera

    2005-01-01

    Full Text Available In this paper the catastrophic and extraordinary floods occurring in Barcelona County (Catalonia, NE Spain are studied, in order to characterise the temporal evolution of extreme flash floods in that area and their main features. These events usually cause economical losses and major problems for undertaking daily activity in Barcelona city. This kind of floods is a very common feature in the North-east of Spain and they are recorded every year in some point of Catalonia. This contribution also shows the frequency of those events, within the framework of all the floods that have occurred in Barcelona since the 14th century, but also describes the flooded area, urban evolution, impacts and the weather conditions for any of most severe events. The evolution of flood occurrence shows the existence of oscillations in the earlier and later modern age periods that can be attributed to climatic variability, evolution of the perception threshold and changes in vulnerability. A great increase of vulnerability can be assumed for the period 1850-1900. The analysis of the time evolution for the Barcelona rainfall series (1854-2000 shows that no trend exists, although, due to the changes in urban planning, flash-floods impact has changed over this time. The number of catastrophic flash floods has diminished, although the extraordinary ones have increased.

  12. Argonautes promote male fertility and provide a paternal memory of germline gene expression in C. elegans

    OpenAIRE

    Conine, Colin C.; Moresco, James J.; Gu, Weifeng; Shirayama, Masaki; Conte, Darryl; Yates, John R.; Mello, Craig C

    2013-01-01

    During each life cycle germ cells preserve and pass on both genetic and epigenetic information. In C. elegans, the ALG-3/4 Argonaute proteins are expressed during male gametogenesis and promote male fertility. Here we show that the CSR-1 Argonaute functions with ALG-3/4 to positively regulate target genes required for spermiogenesis. Our findings suggest that ALG-3/4 functions during spermatogenesis to amplify a small-RNA signal that represents an epigenetic memory of male-specific gene expre...

  13. Evaluation of performance of Son Tek Argonaut acoustic doppler velocity log in tow tank and sea

    Digital Repository Service at National Institute of Oceanography (India)

    Joseph, A.; Madhan, R.; Mascarenhas, A.A.M.Q.; Desai, R.G.P.; VijayKumar, K.; Dias, M.; Tengali, S.; Methar, A.

    Performance of a 500-kHz, 3-beam downward-looking Sontex Argonaut acoustic Doppler velocity log (DVL) based on measurements at tow-tank and sea is addressed. Its accuracy and linearity under tow-tank measurements were largely scattered...

  14. Evaluation of performance of Son Tek Argonaut acoustic doppler velocity log in tow tank and sea

    Digital Repository Service at National Institute of Oceanography (India)

    Joseph, A.; Madhan, R.; Mascarenhas, A.A.M.Q.; Desai; VijayKumar, K.; Dias, M.; Tengali, S.; Methar, A.

    of Performance of SonTek Argonaut Acoustic Doppler Velocity Log in Tow Tank and Sea Antony Joseph, R. Madhan, Antonio Mascaranhas, R.G. Prabhu Desai, Vijaykumar, Mathew Dias, Suryakant Tengali, and Anand Methar National Institute of Oceanography, Dona Paula...

  15. ARGONAUTE10 and ARGONAUTE1 regulate the termination of floral stem cells through two microRNAs in Arabidopsis.

    Directory of Open Access Journals (Sweden)

    Lijuan Ji

    2011-03-01

    Full Text Available Stem cells are crucial in morphogenesis in plants and animals. Much is known about the mechanisms that maintain stem cell fates or trigger their terminal differentiation. However, little is known about how developmental time impacts stem cell fates. Using Arabidopsis floral stem cells as a model, we show that stem cells can undergo precise temporal regulation governed by mechanisms that are distinct from, but integrated with, those that specify cell fates. We show that two microRNAs, miR172 and miR165/166, through targeting APETALA2 and type III homeodomain-leucine zipper (HD-Zip genes, respectively, regulate the temporal program of floral stem cells. In particular, we reveal a role of the type III HD-Zip genes, previously known to specify lateral organ polarity, in stem cell termination. Both reduction in HD-Zip expression by over-expression of miR165/166 and mis-expression of HD-Zip genes by rendering them resistant to miR165/166 lead to prolonged floral stem cell activity, indicating that the expression of HD-Zip genes needs to be precisely controlled to achieve floral stem cell termination. We also show that both the ubiquitously expressed ARGONAUTE1 (AGO1 gene and its homolog AGO10, which exhibits highly restricted spatial expression patterns, are required to maintain the correct temporal program of floral stem cells. We provide evidence that AGO10, like AGO1, associates with miR172 and miR165/166 in vivo and exhibits "slicer" activity in vitro. Despite the common biological functions and similar biochemical activities, AGO1 and AGO10 exert different effects on miR165/166 in vivo. This work establishes a network of microRNAs and transcription factors governing the temporal program of floral stem cells and sheds light on the relationships among different AGO genes, which tend to exist in gene families in multicellular organisms.

  16. Barcelona - Talent Latent 09 / Ahto Sooaru

    Index Scriptorium Estoniae

    Sooaru, Ahto

    2010-01-01

    Fotonäitusest "Talent Latent 09" Barcelonas Arts Santa Monica kunstikeskuses. Loetletud näitusel eksponeeritud fotode autorid. Pikemalt Rafael Milach'i (sünd. 1978), Lucia Ganieva, Javier Marquerie Thomas'i (sünd. 1986), Amaury da Cunha (sünd. 1976) töödest. Lühidalt ka teistest näitustest Arts Santa Monica kunstikeskuses

  17. Hotel W Barcelona: style department (housekeeping)

    OpenAIRE

    Major, Teresa Alexandrina Martins Ferreira

    2014-01-01

    Este relatório pretende descrever a experiência proporcionada pelo estágio efetuado no departamento de Style do hotel W Barcelona, enquanto supervisor de housekeeping. Para melhor conseguir definir esta experiência, é feita uma caraterização da entidade de acolhimento, referindo os elementos diferenciadores associados à brand do hotel, assim como aspetos gerais da cadeia hoteleira a que esta está liga. Segue-se uma revisão de literatura onde é explorada a descrição do departame...

  18. Rearrangement of Barcelona serveis municipals customer services

    OpenAIRE

    Fullana Roger, Cristina

    2015-01-01

    This document presents the report for the Final Degree Thesis. The subject of the project is the Rearrangement of the Customer Services of the public company Barcelona Serveis Municipals (B:SM). The project is classified in the Management area and it details the definition and adaptation process of a new model in the customer services of B:SM. The origin of the project stands on the opening of the new Calàbria facilities. The purpose of the project is to identify the problems in the curren...

  19. Desplegament Wi-Fi per la Barcelona World Race

    OpenAIRE

    Ruiz Fernàndez, Enric

    2015-01-01

    Treball sobre el desplegament d'una xarxa Wi-Fi en una zona de Barcelona per donar un servei d'Internet. Trabajo sobre el despliegue de una red Wi-Fi en una zona de Barcelona para dar un servicio de Internet. Bachelor thesis for the Telecommunication Technologies program on Telematics.

  20. A viral suppressor protein inhibits host RNA silencing by hooking up with Argonautes

    OpenAIRE

    Jin, Hailing; Zhu, Jian-Kang

    2010-01-01

    RNA viruses are particularly vulnerable to RNAi-based defenses in the host, and thus have evolved specific proteins, known as viral suppressors of RNA silencing (VSRs), as a counterdefense. In this issue of Genes & Development, Azevedo and colleagues (pp. 904–915) discovered that P38, the VSR of Turnip crinkle virus, uses its glycine/tryptophane (GW) motifs as an ARGONAUTE (AGO) hook to attract and disarm the host's essential effector of RNA silencing. Several GW motif-containing cellular pro...

  1. Argonaute-2 regulates the proliferation of adult stem cells in planarian

    Institute of Scientific and Technical Information of China (English)

    Yong-Qin Li; An Zeng; Xiao-Shuai Han; Chen Wang; Ge Li; Zhen-Chao Zhang; Jian-Yong Wang; Yong-Wen Qin; Qing Jing

    2011-01-01

    Dear Editor,Planarian Schmidtea mediterranea has extraordinary regeneration capabilities due to the abundance of adult stem cells (ASCs) known as neoblasts,which make planarian a powerful in vivo system to study ASC biology [ 1 ].The Argonaute (AGO) family proteins are defined by the presence of Piwi-Argonaute-Zwille (PAZ)) and PIWI domains [2],and mediate silencing via cleavage of mRNAs [3] or inhibition of translation [4].The AGO family proteins fall into two subfamilies,one named after Arabidopsis Argonaute and the other after Drosophila PIWI [5].In most organisms investigated so far,PIWI proteins bind Piwi-interacting RNAs (piRNAs) and are functionally involved in the regulation of germ cells [6,7].By contrast,AGO proteins have distinct roles in the smallRNA-mediated gene silencing pathway.In Drosophila,AGO1 has been illustrated to be engaged in the miRNA pathway,while AGO2 plays an important role in the siRNA-mediated gene regulation [4].

  2. Expression of human ARGONAUTE 2 inhibits endogenous microRNA activity in Arabidopsis

    Directory of Open Access Journals (Sweden)

    Ira eDeveson

    2013-04-01

    Full Text Available Plant and animal microRNA (miRNA pathways share many analogous components, the ARGONAUTE (AGO proteins being foremost among them. We sought to ascertain the degree of functional conservation shared by Homo sapiens ARGONAUTE 2 (HsAGO2 and Arabidopsis thaliana ARGONAUTE 1 (AtAGO1, which are the predominant AGO family members involved with miRNA activity in their respective species. Transgenic Arabidopsis plants expressing HsAGO2 were indistinguishable from counterparts over-expressing AtAGO1, each group exhibiting the morphological and molecular hallmarks of miRNA-pathway loss-of-function alleles. However, unlike AtAGO1, HsAGO2 was unable to rescue the ago1-27 allele. We conclude that, despite the evolutionary gulf between them, HsAGO2 is likely capable of interacting with some component/s of the Arabidopsis miRNA pathway, thereby perturbing its operation, although differences have arisen such that HsAGO2 alone is insufficient to confer efficient silencing of miRNA targets in planta.

  3. Centro Carvis Barcelona España

    Directory of Open Access Journals (Sweden)

    Danés Tejedor, Alberto

    1976-10-01

    Full Text Available This building has been designed for an advertising firm and was constructed on a 2,600 m2 plot, situated in an urbanization in Esplugas, near Barcelona. The project is made up of three terrace shaped levels, due to the slope of the ground, which are connected by means of patios whereby a volumetric complex is achieved that is integrated into its surrounding environment in a natural way. The structure is of reinforced concrete with standardized pillars placed in a bireticular manner whereby the construction problems were solved in an easy way. An appropriate interior decoration provides a pleasant working atmosphere.Este edificio, proyectado para albergar las instalaciones de una agencia de publicidad, fue construido en una parcela de 2.600 m2 situada en una urbanización de la localidad de Esplugas, cerca de Barcelona. La obra se desarrolló en tres niveles, comunicados visualmente mediante unos patios interiores que sirven de unión espacial entre las diferentes plantas. Estas, en las que se distribuyen convenientemente las distintas secciones que constituyen la organización, se dispusieron escalonadas para adaptarlas al desnivel del terreno, dando como resultado un conjunto volumétrico integrado de forma natural en su entorno. La estructura es de hormigón armado, con pilares normalizados en disposición birreticular, lo que permitió solucionar los problemas constructivos de forma sencilla. Una decoración apropiada y unas eficaces instalaciones ayudan a crear un ambiente de trabajo propicio y muy agradable.

  4. Genomic identification, rapid evolution, and expression of Argonaute genes in the tilapia, Oreochromis niloticus.

    Science.gov (United States)

    Tao, Wenjing; Sun, Lina; Chen, Jinlin; Shi, Hongjuan; Wang, Deshou

    2016-09-01

    Argonaute proteins are key components of the small RNA-induced silencing complex and have multiple roles in RNA-directed regulatory pathways. Argonaute genes can be divided into two subfamilies: the Ago (interacting with microRNA/small interfering RNA) and Piwi subfamilies (interacting with piwi-interacting RNAs (piRNAs)). In the present study, genome-wide analyses firstly yielded the identification of different members of Agos and Piwis in the tilapia, coelacanth, spotted gar, and elephant shark. The additional teleost Ago3b was generated following the fish-specific genome duplication event. Selective pressure analysis on Agos and Piwis between cichlids and other teleosts showed an accelerated evolution of Piwil1 in the cichlid lineages, and the positive selected sites were located in the region of PIWI domain, suggesting that these amino acid substitutions are adapt to targeted cleavage of messenger RNA (mRNA) in cichlids. Ago1 and Ago4 were detected at higher levels at 5 days after hatching (dah) in both ovaries and testes compared with other stages, supporting the previously reported requirement of Ago-mediated pathways to clear the maternal mRNAs during the early embryogenesis. The Piwis were abundantly expressed in tilapia testes, indicating their essential roles in male germline, especially in spermatogenesis. Notable expression of Piwis was also detected in skeletal muscle, indicating that piRNA pathway may not only be confined to development and maintenance of the germline but may also play important roles in somatic tissues. The expression of Piwil1 and Piwil2 was examined by quantitative PCR (qPCR) and in situ hybridization (ISH) to validate the spatial and temporal expression profiles. Taken together, these results present a thorough overview of tilapia Argonaute family and provide a new perspective on the evolution and function of this family in teleosts. PMID:27491892

  5. The sustainability of the Barcelona port enlargement works

    OpenAIRE

    Tarragó, D.; Gens Solé, Antonio; Alonso Pérez de Agreda, Eduardo; Romero Morales, Enrique Edgar; Griell, R.; Estrada, J.L.; Uzcanga, J.

    2011-01-01

    In the Barcelona Port enlargement, currently under construction, part of the new quays are being backfilled with re-used materials such as tunneling waste, rubble from demolitions and dredged soils with poor geotechnical properties. This has resulted in a cost-effective and sustainable construction process that is one of the main goals of the Barcelona Port Authority (APB). A series of control tests have been carried out on the mentioned materials. In addition, dredged soils have been impr...

  6. The C. elegans CSR-1 Argonaute pathway counteracts epigenetic silencing to promote germline gene expression

    OpenAIRE

    Seth, Meetu; Shirayama, Masaki; Gu, Weifeng; Ishidate, Takao; Conte, Darryl; Mello, Craig C

    2013-01-01

    Organisms can develop adaptive sequence-specific immunity by re-expressing pathogen-specific small RNAs that guide gene silencing. For example, the C. elegans PIWI-Argonaute/piRNA pathway recruits RNA-dependent RNA polymerase RdRP to foreign sequences to amplify a trans-generational small RNA-induced epigenetic silencing signal (termed RNAe). Here we provide evidence that in addition to an adaptive memory of silenced sequences, C. elegans can also develop an opposing adaptive memory of expres...

  7. The pergolas of Barcelona Forum, an example of sustainable architecture; Las pergonas de Barcelona Ejemplo de arquitectura sostenible

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2008-07-01

    The use of technologies FV in Barcelona Forum Claims the goal of reducing the greenhouse gases emission to the atmosphere. The pergolas allow reducing the emission of approximately 440 Mg/year of CO{sub 2}.

  8. el caso de la ciudad de Barcelona

    Directory of Open Access Journals (Sweden)

    Jordi Bayona i Carrasco

    2007-01-01

    Full Text Available El análisis de la estructura del hogar de la población de nacionalidad extranjera derivado del Censo de 2001 nos informará, por encima de otros fenómenos, de la etapa del proceso migratorio en que se encuentra esta población, y del desarrollo de estrategias y redes de apoyo en un primer estadio de incorporación. Además, las diferencias territoriales pueden explicar el papel del territorio en el proceso de llegada e inserción de la población extranjera. Con este propósito, se presenta el caso de la ciudad de Barcelona, con una población de nacionalidad extranjera que muestra una estructura del hogar compleja, relacionada con la reciente llegada a la ciudad, y donde las diferencias por distritos en la estructura del hogar nos informan de aquellos territorios que actúan como puerta de entrada a la ciudad.

  9. A viral suppressor protein inhibits host RNA silencing by hooking up with Argonautes

    KAUST Repository

    Jin, Hailing

    2010-05-01

    RNA viruses are particularly vulnerable to RNAi-based defenses in the host, and thus have evolved specific proteins, known as viral suppressors of RNA silencing (VSRs), as a counterdefense. In this issue of Genes & Development, Azevedo and colleagues (pp. 904-915) discovered that P38, the VSR of Turnip crinkle virus, uses its glycine/tryptophane (GW) motifs as an ARGONAUTE (AGO) hook to attract and disarm the host\\'s essential effector of RNA silencing. Several GW motif-containing cellular proteins are known to be important partners of AGOs in RNA silencing effector complexes in yeast, plants, and animals. The GW motif appears to be a versatile and effective tool for regulating the activities of RNA silencing pathways, and the use of GW mimicry to compete for and inhibit host AGOs may be a strategy used by many pathogens to counteract host RNAi-based defenses. © 2010 by Cold Spring Harbor Laboratory Press.

  10. Orígenes del Fútbol en Barcelona (1892-1903. | Origins of Fooball in Barcelona (1892-1903.

    Directory of Open Access Journals (Sweden)

    Xavier Torrebadella Flix

    2012-01-01

    Full Text Available This article shows some unpublished data that seek to clarify the origins of football in Spain and particularly in Barcelona. Apart from the influence of the English colony in the dissemination of football, the background of school sport is described and evaluated. It is provided data about football in Barcelona which reveal that before the constitution of the Football Club Barcelona, often considered the first team of the city, there were ten associations that practiced this sport. It emphasizes the importance of the British colony, gyms and sports clubs of Barcelona from 1892 to 1903, to generate the enabling environment that made ​​the modern sport of football triumph, stimulating in turn the context Regenerationism and the emergence of associations sports from the early twentieth century. The research method has focused on historical analysis techniques, with the treatment of the original documentary sources and complemented with historicist indirect sources.ResumenEn este artículo se presentan algunos datos inéditos que pretenden esclarecer los orígenes del fútbol en España y más concretamente en Barcelona. Aparte de la influencia que ejerce la colonia inglesa en la divulgación del fútbol, se describen y se valoran los antecedentes del deporte escolar. Sobre el fútbol en Barcelona se aportan datos que revelan que antes de la constitución del Fútbol Club Barcelona, considerado frecuentemente como el primer equipo de fútbol de la ciudad, existieron una decena de asociaciones que practicaron este deporte. Se acentúa la importancia que tuvo la colonia inglesa, los gimnasios y las sociedades deportivas de Barcelona entre 1892 y 1903, para generar el ambiente favorable que hizo que el fútbol triunfase como deporte moderno, estimulando a su vez el contexto regeneracionista y la emergencia del asociacionismo deportivo de principios del siglo XX. El método de investigación se ha centrado en técnicas de análisis histórico en

  11. China-Spain Investment & Trade Seminar Held in Barcelona

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    @@ On April 24,the China-Spain Investment & Trade Seminar was jointly held in Barcelona,Spain.As the first event of the Chinese Products Promotion Week (Europe),the seminar aims to help the Chinese export enterprises and local governments learn about relevant laws and regulations and product quality standards of the EU.

  12. Complex esportiu i hotel al Port de Barcelona

    OpenAIRE

    Clèries Vilamajó, Albert

    2010-01-01

    Projecte d'ordenació del Port Vell de Barcelona. Substitució de l'actual Hotel Vela per un nou hotel de 5 estrelles. Substitució dels dos Clubs de natació de la platja de Sant Sebastià per dos nous complexs esportius.

  13. Empresas familiares de inmigrantes en Barcelona y Montevideo

    OpenAIRE

    Paola Martínez Pérez

    2009-01-01

    El objetivo de este trabajo es observar las diferentes dimensiones que adquiere la familia en las empresas familiares de inmigrantes. En este caso, la propuesta metodológica es analizar, de forma comparativa, la realidad empresarial consolidada del colectivo gallego en Montevideo con las empresas familiares de inmigrantes de reciente creación en el área metropolitana en Barcelona.

  14. Jean Nouveli supermodernism Barcelonas / Raili Seppänen

    Index Scriptorium Estoniae

    Seppänen, Raili

    2005-01-01

    2005. a. suvel valmivast prantsuse arhitekti Jean Nouveli (sünd. 1945) projekteeritud tornmajast Torre Agbar Barcelonas Avinguda Diagonal 209-211. Abiks hispaania arhitekt Fermin Vazquez arhitektibüroost b720 Arquitectura S.L. Jean Nouveli tuntud projekte. Ill.: J. Nouveli portreefoto, tornmaja välisvaade

  15. Geodetic infrastructure at the Barcelona harbour for sea level monitoring

    Science.gov (United States)

    Martinez-Benjamin, Juan Jose; Gili, Josep; Lopez, Rogelio; Tapia, Ana; Pros, Francesc; Palau, Vicenc; Perez, Begona

    2015-04-01

    The presentation is directed to the description of the actual geodetic infrastructure of Barcelona harbour with three tide gauges of different technologies for sea level determination and contribution to regional sea level rise and understanding past and present sea level rise in the Barcelona harbour. It is intended that the overall system will constitute a CGPS Station of the ESEAS (European Sea Level) and TIGA (GPS Tide Gauge Benchmark Monitoring) networks. At Barcelona harbour there is a MIROS radar tide gauge belonging to Puertos del Estado (Spanish Harbours).The radar sensor is over the water surface, on a L-shaped structure which elevates it a few meters above the quay shelf. 1-min data are transmitted to the ENAGAS Control Center by cable and then sent each 1 min to Puertos del Estado by e-mail. The information includes wave forescast (mean period, significant wave height, sea level, etc.This sensor also measures agitation and sends wave parameters each 20 min. There is a GPS station Leica Geosystems GRX1200 GG Pro and antenna AX 1202 GG. The Control Tower of the Port of Barcelona is situated in the North dike of the so-called Energy Pier in the Barcelona harbor (Spain). This tower has different kind of antennas for navigation monitoring and a GNSS permanent station. As the tower is founded in reclaimed land, and because its metallic structure, the 50 m building is subjected to diverse movements, including periodic fluctuations due to temperature changes. In this contribution the 2009, 2011, 2012, 2013 and 2014 the necessary monitoring campaigns are described. In the framework of a Spanish Space Project, the instrumentation of sea level measurements has been improved by providing the Barcelona site with a radar tide gauge Datamar 2000C from Geonica S.L. in June 2014 near an acoustic tide gauge from the Barcelona Harbour installed in 2013. Precision levelling has been made several times in the last two years because the tower is founded in reclaimed land and

  16. A Pelargonium ARGONAUTE4 gene shows organ-specific expression and differences in RNA and protein levels.

    Science.gov (United States)

    He, Jie; Gray, John; Leisner, Scott

    2010-03-01

    RNAi-induced gene silencing plays a role in plant DNA methylation and defense. While most gene silencing studies have been performed on annuals, little is known about the expression of key components of this process (like ARGONAUTE proteins) in ornamentals. Using a combination of polymerase chain reaction techniques, an ARGONAUTE4 gene, PhAGO4, was isolated from Pelargonium. PhAGO4 encodes a predicted product of 934 amino acids that contains the PAZ and PIWI domains typical of ARGONAUTE (AGO) proteins. Phylogenetic analyses indicate that PhAGO4 clusters with other plant AGO4 proteins. Organ expression patterns of the AGO4 genes in Pelargonium and Arabidopsis show intriguing differences. AGO4 RNA levels decline with leaf age in both Arabidopsis and Pelargonium. In contrast AGO4 RNA levels in roots relative to leaves are higher in Pelargonium than in Arabidopsis. Both Arabidopsis and Pelargonium AGO4 showed higher RNA levels in flowers than leaves or roots. Even though flowers show higher levels of PhAGO4 RNA when compared to leaves and roots, protein gel blot analysis shows that at the protein level, the reverse is true. This suggests that PhAGO4 expression may be regulated at the translational or post-translational level in Pelargonium flowers.

  17. DICER-ARGONAUTE2 complex in continuous fluorogenic assays of RNA interference enzymes.

    Directory of Open Access Journals (Sweden)

    Mark A Bernard

    Full Text Available Mechanistic studies of RNA processing in the RNA-Induced Silencing Complex (RISC have been hindered by lack of methods for continuous monitoring of enzymatic activity. "Quencherless" fluorogenic substrates of RNAi enzymes enable continuous monitoring of enzymatic reactions for detailed kinetics studies. Recombinant RISC enzymes cleave the fluorogenic substrates targeting human thymidylate synthase (TYMS and hypoxia-inducible factor 1-α subunit (HIF1A. Using fluorogenic dsRNA DICER substrates and fluorogenic siRNA, DICER+ARGONAUTE2 mixtures exhibit synergistic enzymatic activity relative to either enzyme alone, and addition of TRBP does not enhance the apparent activity. Titration of AGO2 and DICER in enzyme assays suggests that AGO2 and DICER form a functional high-affinity complex in equimolar ratio. DICER and DICER+AGO2 exhibit Michaelis-Menten kinetics with DICER substrates. However, AGO2 cannot process the fluorogenic siRNA without DICER enzyme, suggesting that AGO2 cannot self-load siRNA into its active site. The DICER+AGO2 combination processes the fluorogenic siRNA substrate (Km=74 nM with substrate inhibition kinetics (Ki=105 nM, demonstrating experimentally that siRNA binds two different sites that affect Dicing and AGO2-loading reactions in RISC. This result suggests that siRNA (product of DICER bound in the active site of DICER may undergo direct transfer (as AGO2 substrate to the active site of AGO2 in the DICER+AGO2 complex. Competitive substrate assays indicate that DICER+AGO2 cleavage of fluorogenic siRNA is specific, since unlabeled siRNA and DICER substrates serve as competing substrates that cause a concentration-dependent decrease in fluorescent rates. Competitive substrate assays of a series of DICER substrates in vitro were correlated with cell-based assays of HIF1A mRNA knockdown (log-log slope=0.29, suggesting that improved DICER substrate designs with 10-fold greater processing by the DICER+AGO2 complex can provide a

  18. Urbanismo y ecología en Barcelona

    OpenAIRE

    Martínez Alier, Joan

    1991-01-01

    Este artículo describe el crecimiento de Barcelona hacia el Vallès i el Maresme, con el impulso de las inversiones olímpicas que están provocando el ensanchamiento de la conurbación. El artículo sitúa Barcelona dentro del contexto ecológico-regional, explica que cantidad de energía exosomática y de agua se hace servir, y qué origen tiene. El artículo critica este crecimiento, recordando las ideas de planificación más ecológicas de las primeras décadas de este siglo (por ejemplo, el movimiento...

  19. New mediterranean elements in contemporary housing. The case of Barcelona

    Directory of Open Access Journals (Sweden)

    Vincenzo Paolo Bagnato

    2012-10-01

    Full Text Available In the face of increasing and differentiating the low-cost housing demand and the trend of establishing new paradigms in the contemporary housing design, the architectural investigation has replaced into its disciplinary statement the topic of housing as central question in research and design experimentation. The city of Barcelona has codified in the last years innovative modalities of public management in social housing, offering interesting points of reflection on the idea of housing and of Mediterranean quality in urban, architectural and constructive terms. The paper proposes a key to the reading on the recent experiences of social housing in Barcelona illustrating the different forms through which architecture interprets the relationship between housing and public space, between innovation and constructive tradition.

  20. A Primary Sequence Analysis of the ARGONAUTE Protein Family in Plants.

    Science.gov (United States)

    Rodríguez-Leal, Daniel; Castillo-Cobián, Amanda; Rodríguez-Arévalo, Isaac; Vielle-Calzada, Jean-Philippe

    2016-01-01

    Small RNA (sRNA)-mediated gene silencing represents a conserved regulatory mechanism controlling a wide diversity of developmental processes through interactions of sRNAs with proteins of the ARGONAUTE (AGO) family. On the basis of a large phylogenetic analysis that includes 206 AGO genes belonging to 23 plant species, AGO genes group into four clades corresponding to the phylogenetic distribution proposed for the ten family members of Arabidopsis thaliana. A primary analysis of the corresponding protein sequences resulted in 50 sequences of amino acids (blocks) conserved across their linear length. Protein members of the AGO4/6/8/9 and AGO1/10 clades are more conserved than members of the AGO5 and AGO2/3/7 clades. In addition to blocks containing components of the PIWI, PAZ, and DUF1785 domains, members of the AGO2/3/7 and AGO4/6/8/9 clades possess other consensus block sequences that are exclusive of members within these clades, suggesting unforeseen functional specialization revealed by their primary sequence. We also show that AGO proteins of animal and plant kingdoms share linear sequences of blocks that include motifs involved in posttranslational modifications such as those regulating AGO2 in humans and the PIWI protein AUBERGINE in Drosophila. Our results open possibilities for exploring new structural and functional aspects related to the evolution of AGO proteins within the plant kingdom, and their convergence with analogous proteins in mammals and invertebrates. PMID:27635128

  1. Argonaute-2-null embryonic stem cells are retarded in self-renewal and differentiation

    Indian Academy of Sciences (India)

    P Chandra Shekar; Adnan Naim; D Partha Sarathi; Satish Kumar

    2011-09-01

    RNA interference (RNAi) pathways regulate self-renewal and differentiation of embryonic stem (ES) cells. Argonaute 2 (Ago2) is a vital component of RNA-induced silencing complex (RISC) and the only Ago protein with slicer activity. We generated Ago2-deficient ES cells by conditional gene targeting. Ago2-deficient ES cells are defective in the small-RNA-mediated gene silencing and are significantly compromised in biogenesis of mature microRNA. The self-renewal rate of Ago2-deficient ES cells is affected due to failure of silencing of Cdkn1a by ES-cell-specific microRNAs (miRNA) in the absence of Ago2. Interestingly, unlike Dicer- and Dgcr8-deficient ES cells, they differentiate to all three germ layers both in vivo and in vitro. However, early differentiation of Ago2-deficient ES cells is delayed by 2–4 days as indicated by persistence of higher levels of self-renewal/ pluripotency markers during differentiation. Further, appearance of morphological and differentiation markers is also delayed during the differentiation. In this study we show that Ago2 is essential for normal self-renewal and differentiation. Also, our data suggest that self-renewal and differentiation of ES cells are regulated by both siRNA and miRNA pathways.

  2. Novel Insights into Guide RNA 5′-Nucleoside/Tide Binding by Human Argonaute 2

    Directory of Open Access Journals (Sweden)

    Munishikha Kalia

    2015-12-01

    Full Text Available The human Argonaute 2 (hAgo2 protein is a key player of RNA interference (RNAi. Upon complex formation with small non-coding RNAs, the protein initially interacts with the 5′-end of a given guide RNA through multiple interactions within the MID domain. This interaction has been reported to show a strong bias for U and A over C and G at the 5′-position. Performing molecular dynamics simulations of binary hAgo2/OH–guide–RNA complexes, we show that hAgo2 is a highly flexible protein capable of binding to guide strands with all four possible 5′-bases. Especially, in the case of C and G this is associated with rather large individual conformational rearrangements affecting the MID, PAZ and even the N-terminal domains to different degrees. Moreover, a 5′-G induces domain motions in the protein, which trigger a previously unreported interaction between the 5′-base and the L2 linker domain. Combining our in silico analyses with biochemical studies of recombinant hAgo2, we find that, contrary to previous observations, hAgo2 is capable of functionally accommodating guide strands regardless of the 5′-base.

  3. Anatomy of RISC: how do small RNAs and chaperones activate Argonaute proteins?

    Science.gov (United States)

    Nakanishi, Kotaro

    2016-09-01

    RNA silencing is a eukaryote-specific phenomenon in which microRNAs and small interfering RNAs degrade messenger RNAs containing a complementary sequence. To this end, these small RNAs need to be loaded onto an Argonaute protein (AGO protein) to form the effector complex referred to as RNA-induced silencing complex (RISC). RISC assembly undergoes multiple and sequential steps with the aid of Hsc70/Hsp90 chaperone machinery. The molecular mechanisms for this assembly process remain unclear, despite their significance for the development of gene silencing techniques and RNA interference-based therapeutics. This review dissects the currently available structures of AGO proteins and proposes models and hypotheses for RISC assembly, covering the conformation of unloaded AGO proteins, the chaperone-assisted duplex loading, and the slicer-dependent and slicer-independent duplex separation. The differences in the properties of RISC between prokaryotes and eukaryotes will also be clarified. WIREs RNA 2016, 7:637-660. doi: 10.1002/wrna.1356 For further resources related to this article, please visit the WIREs website. PMID:27184117

  4. Transcriptional regulation mechanism mediated by miRNA-DNA•DNA triplex structure stabilized by Argonaute.

    Science.gov (United States)

    Toscano-Garibay, Julia D; Aquino-Jarquin, Guillermo

    2014-11-01

    Transcription regulation depends on interactions between repressor or activator proteins with promoter sequences, while post-transcriptional regulation typically relies on microRNA (miRNA) interaction with sequences in 5' and 3'-Untranslated regions (UTRs) of messenger RNA (mRNA). However, several pieces of evidence suggest that miRNA:Argonaute (AGO) complexes may also suppress transcription through RNA interference (RNAi) components and epigenetic mechanisms. However, recent observations suggest that miRNA-induced transcriptional silencing could be exerted by an unknown mechanism independent of chromatin modifiers. The RNA-DNA•DNA triplex structure has emerged as an important RNA tertiary motif in which successive non-canonical base pairs form between a DNA-DNA duplex and a third strand. Frequently, promoters have Purine (PU)-rich tracts, and some Triplex-forming oligonucleotides (TFOs) targeting these regulatory regions have been shown to inhibit transcription selectively. Here, we summarize observations suggesting that miRNAs exert regulation over promoter regions through miRNA-DNA•DNA triplex structure formation stabilized by AGO proteins which represents a plausible model of RNA-mediated Transcriptional gene silencing (TGS). PMID:25086339

  5. A Primary Sequence Analysis of the ARGONAUTE Protein Family in Plants

    Science.gov (United States)

    Rodríguez-Leal, Daniel; Castillo-Cobián, Amanda; Rodríguez-Arévalo, Isaac; Vielle-Calzada, Jean-Philippe

    2016-01-01

    Small RNA (sRNA)-mediated gene silencing represents a conserved regulatory mechanism controlling a wide diversity of developmental processes through interactions of sRNAs with proteins of the ARGONAUTE (AGO) family. On the basis of a large phylogenetic analysis that includes 206 AGO genes belonging to 23 plant species, AGO genes group into four clades corresponding to the phylogenetic distribution proposed for the ten family members of Arabidopsis thaliana. A primary analysis of the corresponding protein sequences resulted in 50 sequences of amino acids (blocks) conserved across their linear length. Protein members of the AGO4/6/8/9 and AGO1/10 clades are more conserved than members of the AGO5 and AGO2/3/7 clades. In addition to blocks containing components of the PIWI, PAZ, and DUF1785 domains, members of the AGO2/3/7 and AGO4/6/8/9 clades possess other consensus block sequences that are exclusive of members within these clades, suggesting unforeseen functional specialization revealed by their primary sequence. We also show that AGO proteins of animal and plant kingdoms share linear sequences of blocks that include motifs involved in posttranslational modifications such as those regulating AGO2 in humans and the PIWI protein AUBERGINE in Drosophila. Our results open possibilities for exploring new structural and functional aspects related to the evolution of AGO proteins within the plant kingdom, and their convergence with analogous proteins in mammals and invertebrates. PMID:27635128

  6. Bacterial Expression of Mouse Argonaute 2 for Functional and Mutational Studies

    Directory of Open Access Journals (Sweden)

    Aniello Russo

    2010-02-01

    Full Text Available RNA interference (RNAi is a post-transcriptional gene-silencing process that occurs in many eukaryotic organisms upon intracellular exposure to double-stranded RNA. Argonaute 2 (Ago2 protein is the catalytic engine of mammalian RNAi. It contains a PIWI domain that is structurally related to RNases H and possibly shares with them a two-metal-ion catalysis mechanism. Here we describe the expression in E. coli of mouse Ago2 and testing of its enzymatic activity in a RISC assay, i.e., for the ability to cleave a target RNA in a single position specified by a complementary small interfering RNA (siRNA. The results show that the enzyme can load the siRNA and cleave the complementary RNA in absence of other cellular factors, as described for human Ago2. It was also found that mutation of Arg669, a residue previously proposed to be involved in substrate and/or B metal ion binding, doesn’t affect the enzymatic activity, suggesting that this residue doesn’t belong to the active site.

  7. A primary sequence analysis of the ARGONAUTE protein family in plants.

    Directory of Open Access Journals (Sweden)

    Daniel Rodriguez-Leal

    2016-08-01

    Full Text Available Small RNA (sRNA-mediated gene silencing represents a conserved regulatory mechanism controlling a wide diversity of developmental processes through interactions of sRNAs with proteins of the ARGONAUTE (AGO family. On the basis of a large phylogenetic analysis that includes 206 AGO genes belonging to 23 plant species, AGO genes group into four clades corresponding to the phylogenetic distribution proposed for the ten family members of Arabidopsis thaliana. A primary analysis of the corresponding protein sequences resulted in 50 sequences of amino acids (blocks conserved across their linear length. Protein members of the AGO4/6/8/9 and AGO1/10 clades are more conserved than members of the AGO5 and AGO2/3/7 clades. In addition to blocks containing components of the PIWI, PAZ, and DUF1785 domains, members of the AGO2/3/7 and AGO4/6/8/9 clades possess other consensus block sequences that are exclusive of members within these clades, suggesting unforeseen functional specialization revealed by their primary sequence. We also show that AGO proteins of animal and plant kingdoms share linear sequences of blocks that include motifs involved in posttranslational modifications such as those regulating AGO2 in humans and the PIWI protein AUBERGINE in Drosophila. Our results open possibilities for exploring new structural and functional aspects related to the evolution of AGO proteins within the plant kingdom, and their convergence with analogous proteins in mammals and invertebrates.

  8. ARGONAUTE1 acts in Arabidopsis root radial pattern formation independently of the SHR/SCR pathway.

    Science.gov (United States)

    Miyashima, Shunsuke; Hashimoto, Takashi; Nakajima, Keiji

    2009-03-01

    The formation of radially symmetric tissue patterns is one of the most basic processes in the development of vascular plants. In Arabidopsis thaliana, plant-specific GRAS-type transcription factors, SHORT-ROOT (SHR) and SCARECROW (SCR), are required for asymmetric cell divisions that separate two ground tissue cell layers, the endodermis and cortex, as well as for endodermal cell fate specification. While loss of SHR or SCR results in a single-layered ground tissue, radially symmetric cellular patterns are still maintained, suggesting that unknown regulatory mechanisms act independently of the SHR/SCR-dependent pathway. In this study, we identified a novel root radial pattern mutant and found that it is a new argonaute1 (ago1) allele. Multiple ago1 mutant alleles contained supernumerary ground tissue cell layers lacking a concentric organization, while expression patterns of SHR and SCR were not affected, revealing a previously unreported role for AGO1 in root ground tissue patterning. Analyses of ago1 scr double mutants demonstrated that the simultaneous loss of the two pathways caused a dramatic reduction in cellular organization and ground tissue identity as compared with the single mutants. Based on these results, we propose that highly symmetric root ground tissue patterns are maintained by the actions of two independent pathways, one using post-transcriptional regulation mediated by AGO1 and the other using the SHR/SCR transcriptional regulator.

  9. ATLAS Virtual Visit-Barcelona-03-04-2014

    CERN Multimedia

    he Institut de Fisica d`Altes Energies (IFAE) is a leading high energy physics research institute located in the Autonomous University of Barcelona (UAB), Spain. Among the numerous activities of the institute, IFAE is deeply involved in the research program of the LHC and plays a key role as a member of the ATLAS collaboration. IFAE scientists have regularly been promoting public awareness of science and making informal contributions to science education.

  10. Commuters' valuation of travel time variability in Barcelona

    OpenAIRE

    Matas i Prat, Anna; Asensio Ruiz de Alda, Francisco Javier

    2007-01-01

    The value given by commuters to the variability of travel times is empirically analysed using stated preference data from Barcelona (Spain). Respondents are asked to choose between alternatives that differ in terms of cost, average travel time, variability of travel times and departure time. Different specifications of a scheduling choice model are used to measure the influence of various socioeconomic characteristics. Our results show that travel time variability.

  11. Innovative milieu, micro firms and local development in Barcelona

    OpenAIRE

    Lladós Masllorens, Josep; Fernández Ardèvol, Mireia; Vilaseca i Requena, Jordi

    2008-01-01

    Peer-reviewed An entrepreneurial environment is conformed by factors that play a favourable role in the development of entrepreneurship. Economic literature on innovative milieus identifies those elements that are decisive in improving the competitive performance of companies. We analysed whether Barcelona Activa's specific environment promotes the development of an innovative milieu, which favours entrepreneurial attitudes. The results show how the combination of incubation experience, de...

  12. Empresas familiares de inmigrantes en Barcelona y Montevideo

    Directory of Open Access Journals (Sweden)

    Paola Martínez Pérez

    2009-12-01

    Full Text Available El objetivo de este trabajo es observar las diferentes dimensiones que adquiere la familia en las empresas familiares de inmigrantes. En este caso, la propuesta metodológica es analizar, de forma comparativa, la realidad empresarial consolidada del colectivo gallego en Montevideo con las empresas familiares de inmigrantes de reciente creación en el área metropolitana en Barcelona.

  13. An anthropological approach to voluntarily single motherhood in Barcelona

    Directory of Open Access Journals (Sweden)

    Oscar Jordana-Pröpper

    2013-06-01

    Full Text Available This article is based on the research I did for my doctoral thesis about voluntarily single motherhood in Barcelona (Catalonia, Spain. It is an anthropological approach to the appearance and the development of voluntarily single motherhood, which is when a woman becomes a mother through adoption or conception previously planned without partner. Within a framework of study carried out from October 2001 to October 2007 in the Barcelona Metropolitan Area, my research is based on in-depth interviews with twelve women from April 2002 to April 2006. The aim of the paper is to understand why women in Barcelona choose to be voluntarily single mothers. The purpose is to point out that the voluntarily single motherhood is a new way of understanding between women and men, resulting from the progressive changes in their respective gender roles. This anthropological research is grounded in a full vital process: from the personal decision of the women to become single mothers to the daily interaction with their children.

  14. The developmental outcomes of P0-mediated ARGONAUTE destabilization in tomato.

    Science.gov (United States)

    Hendelman, Anat; Kravchik, Michael; Stav, Ran; Zik, Moriyah; Lugassi, Nitsan; Arazi, Tzahi

    2013-01-01

    The plant protein ARGONAUTE1 (AGO1) functions in multiple RNA-silencing pathways, including those of microRNAs, key regulators of growth and development. Genetic analysis of ago1 mutants with informative defects has provided valuable insights into AGO1's biological functions. Tomato encodes two AGO1 homologs (SlAGO1s), but mutants have not been described to date. To analyze SlAGO1s' involvement in development, we confirmed that both undergo decay in the presence of the Polerovirus silencing suppressor P0 and produce a transgenic responder line (OP:P0HA) that, upon transactivation, expresses P0 C-terminally fused to a hemagglutinin (HA) tag (P0HA) and destabilizes SlAGO1s at the site of expression. By crossing OP:P0HA with a battery of driver lines, constitutive as well as organ- and stage-specific SlAGO1 downregulation was induced in the F1 progeny. Activated plants exhibited various developmental phenotypes that partially overlapped with those of Arabidopsis ago1 mutants. Plants that constitutively expressed P0HA had reduced SlAGO1 levels and increased accumulation of miRNA targets, indicating compromised SlAGO1-mediated silencing. Consistent with this, they exhibited pleiotropic morphological defects and their growth was arrested post-germination. Transactivation of P0HA in young leaf and floral organ primordia dramatically modified corresponding organ morphology, including the radialization of leaflets, petals and anthers, suggesting that SlAGO1s' activities are required for normal lateral organ development and polarity. Overall, our results suggest that the OP:P0HA responder line can serve as a valuable tool to suppress SlAGO1 silencing pathways in tomato. The suppression of additional SlAGOs by P0HA and its contribution to the observed phenotypes awaits investigation.

  15. HIV-1 RNAs are Not Part of the Argonaute 2 Associated RNA Interference Pathway in Macrophages.

    Directory of Open Access Journals (Sweden)

    Valentina Vongrad

    Full Text Available MiRNAs and other small noncoding RNAs (sncRNAs are key players in post-transcriptional gene regulation. HIV-1 derived small noncoding RNAs (sncRNAs have been described in HIV-1 infected cells, but their biological functions still remain to be elucidated. Here, we approached the question whether viral sncRNAs may play a role in the RNA interference (RNAi pathway or whether viral mRNAs are targeted by cellular miRNAs in human monocyte derived macrophages (MDM.The incorporation of viral sncRNAs and/or their target RNAs into RNA-induced silencing complex was investigated using photoactivatable ribonucleoside-induced cross-linking and immunoprecipitation (PAR-CLIP as well as high-throughput sequencing of RNA isolated by cross-linking immunoprecipitation (HITS-CLIP, which capture Argonaute2-bound miRNAs and their target RNAs. HIV-1 infected monocyte-derived macrophages (MDM were chosen as target cells, as they have previously been shown to express HIV-1 sncRNAs. In addition, we applied small RNA deep sequencing to study differential cellular miRNA expression in HIV-1 infected versus non-infected MDMs.PAR-CLIP and HITS-CLIP data demonstrated the absence of HIV-1 RNAs in Ago2-RISC, although the presence of a multitude of HIV-1 sncRNAs in HIV-1 infected MDMs was confirmed by small RNA sequencing. Small RNA sequencing revealed that 1.4% of all sncRNAs were of HIV-1 origin. However, neither HIV-1 derived sncRNAs nor putative HIV-1 target sequences incorporated into Ago2-RISC were identified suggesting that HIV-1 sncRNAs are not involved in the canonical RNAi pathway nor is HIV-1 targeted by this pathway in HIV-1 infected macrophages.

  16. Argonaute 2 complexes selectively protect the circulating microRNAs in cell-secreted microvesicles.

    Directory of Open Access Journals (Sweden)

    Limin Li

    Full Text Available Cell-secreted miRNAs are highly stable and can serve as biomarkers for various diseases and signaling molecules in intercellular communication. The mechanism underlying the stability of circulating miRNAs, however, remains incompletely understood. Here we show that Argonaute 2 (Ago2 complexes and microvesicles (MVs provide specific and non-specific protection for miRNA in cell-secreted MVs, respectively. First, the resistance of MV-encapsulated miRNAs to RNaseA was both depended on intact vesicular structure of MVs and protease-sensitive. Second, an immunoprecipitation assay using a probe complementary to human miR-16, a miRNA primarily located in the MVs and showed a strong, protease-sensitive resistance to RNaseA, identified Ago2 as a major miR-16-associated protein. Compared with protein-free miR-16, Ago2-associated miR-16 was resistant to RNaseA in a dose- and time-dependent fashion. Third, when the miR-16/Ago2 complex was disrupted by trypaflavine, the resistance of miR-16 to RNaseA was decreased. In contrast, when the association of miR-16 with the Ago2 complexes was increased during cell apoptosis, although the total amount of miR-16 and Ago2 remained unchanged, the resistance of miR-16 to RNaseA in the MVs was enhanced. A similar correlation between the increase of miR-223/Ago2 association and the resistance of miR-223 against RNaseA was observed during all trans retinoic acid (ATRA-induced cell differentiation of promyelocytic HL60 cells. In conclusion, the association of miRNAs with Ago2 complexes, an event that is linked to cell functional status, plays a critical role in stabilizing the circulating miRNAs in cell-secreted MVs.

  17. miRNA-target chimeras reveal miRNA 3'-end pairing as a major determinant of Argonaute target specificity

    DEFF Research Database (Denmark)

    Moore, Michael J; Scheel, Troels K H; Luna, Joseph M;

    2015-01-01

    microRNAs (miRNAs) act as sequence-specific guides for Argonaute (AGO) proteins, which mediate posttranscriptional silencing of target messenger RNAs. Despite their importance in many biological processes, rules governing AGO-miRNA targeting are only partially understood. Here we report a modified...... but divergent 3'-ends. This work provides a means for explicit biochemical identification of miRNA sites in vivo, leading to the discovery that miRNA 3'-end pairing is a general determinant of AGO binding specificity....

  18. Comunidades imaginadas: nacionalismo banal en los locutorios de Barcelona

    OpenAIRE

    Joel Feliu; Mª Carmen Peñaranda-Cólera; Adriana Gil-Juárez

    2012-01-01

    A pesar de la competencia que sufren, al multiplicarse las posibilidades de conexión a las redes telefónicas e informáticas, los locutorios de la ciudad de Barcelona y alrededores, no dejan de ser negocios con un relativo éxito. Partiendo de un trabajo de campo colectivo en este artículo articulamos los conceptos de Nacionalismo Banal de Michael Billig y de Comunidad Imaginada de Benedict Anderson, para mostrar que en estos espacios de conexión pueden encontrarse comunidades nacionales imagin...

  19. De bandas latinas a asociaciones juveniles: La experiencia de Barcelona

    OpenAIRE

    Feixa , Carles; Canelles, Noemí

    2006-01-01

    La construcción de la imagen de los jóvenes de origen latinoamericano en Barcelona ha estado estrechamente relacionada con las llamadas “bandas latinas”, caracterizadas desde los medios de comunicación como criminales y sectarias. A pesar de que los criterios que han regido las primeras estrategias de intervención se corresponden con esta caracterización, existen diversos factores que permiten una conceptualización diferente y unas políticas más cercanas a las que se realizan c...

  20. Barcelona contemporánea: el ocaso de un modelo

    Directory of Open Access Journals (Sweden)

    Antonio Pizza

    2012-12-01

    Full Text Available Barcelona is a city, which through the democratization of public space in the second half of the seventies, developed with a noticeable intention of balancing the public and private. The municipalities’ efforts were focused towards the planification and regeneration of dilapidated spaces and the construction of new structures for public benefit. However, since 2007 new phenomena have come to light that emphasise urban problems in which public interests become less important than private investment initiatives. New market priorities, together with tourism and myriad immigration have caused an “expropriation” of the city from its inhabitants.

  1. Service-Learning in Physical Education Teacher Training. Physical Education in the Modelo Prison, Barcelona

    Science.gov (United States)

    Lleixà, Teresa; Ríos, Merche

    2015-01-01

    In the Psychiatric Unit of the Modelo Prison, Barcelona, a physical education programme is carried out annually with the participation of University of Barcelona (UB) students. In this context, we carried out a study based on service-learning parameters. The aim of the study was twofold: to determine the impact on inmates of the physical education…

  2. Research reactor decommissioning experience - concrete removal and disposal -

    International Nuclear Information System (INIS)

    Removal and disposal of neutron activated concrete from biological shields is the most significant operational task associated with research reactor decommissioning. During the period of 1985 thru 1989 Chem-Nuclear Systems, Inc. was the prime contractor for complete dismantlement and decommissioning of the Northrop TRIGA Mark F, the Virginia Tech Argonaut, and the Michigan State University TRIGA Mark I Reactor Facilities. This paper discusses operational requirements, methods employed, and results of the concrete removal, packaging, transport and disposal operations for these (3) research reactor decommissioning projects. Methods employed for each are compared. Disposal of concrete above and below regulatory release limits for unrestricted use are discussed. This study concludes that activated reactor biological shield concrete can be safely removed and buried under current regulations

  3. Edificio en La Plaza Lesseps de Fernando Lesseps – Barcelona

    Directory of Open Access Journals (Sweden)

    Danés, Albert

    1975-02-01

    Full Text Available This interesting example of urban architecture is situated in Barcelona, facing two streets of different widths, for which reasons the number of floors on the two sides is also different. The basements are reserved for parking space. Further the building comprises commercial ground floors with very attractive shopping arcades; a mezzanine commercial floor as well and the top floors, that are intended for housings. Pleasant exterior with solid colours. The work has been achieved thanks to the valuable contribution of Lluciá Navarro i Rodón.Esta interesante muestra de la arquitectura urbana está emplazada en Barcelona, con fachadas a dos calles de anchura diferente, por lo que el número de plantas es también distinto. Sótanos destinados a estacionamiento de vehículos. Plantas bajas comerciales, con galerías de paso muy atractivas. Entresuelo, también comercial, y plantas altas de viviendas variadas. Tratamiento exterior atrayente, a base de colores sólidos y sistema esgrafiado, contando con la valiosa colaboración de Lluciá Navarro i Rodón.

  4. The JASON reactor: from core removal to fuel reprocessing

    Energy Technology Data Exchange (ETDEWEB)

    Beeley, P.; Williams, A.; Lockwood, R. [Defence College of Electromechanical Engineering, Nuclear Dept., HMS SULTAN (United Kingdom); Raymond, B.; Spyrou, N. [Surrey Univ., Dept. of Physical and Electronic Sciences (United Kingdom); Auziere, P. [AREVA NC, Treatment Business Unit, 78 - Velizy (France)

    2007-07-01

    The 10 kW JASON Argonaut reactor was operated at the Royal Naval College, Greenwich, London, between 1962 and 1996. After initial cooling in the core, the MTR type fuel (80% enriched U{sup 235}) was dry stored on site before transport in 1998 to BNFL, Sellafield for interim wet storage. Arrangements for reprocessing of the fuel at AREVA NC, La Hague are now in progress and this paper will describe various aspects of the storage, transfer, monitoring, and the treatment at La Hague plant. The radioactive waste resulting from the processing of these used fuels will be conditioned into a suitable package for return to UK.

  5. Expression levels of the microRNA maturing microprocessor complex component DGCR8 and the RNA-induced silencing complex (RISC) components argonaute-1, argonaute-2, PACT, TARBP1, and TARBP2 in epithelial skin cancer.

    Science.gov (United States)

    Sand, Michael; Skrygan, Marina; Georgas, Dimitrios; Arenz, Christoph; Gambichler, Thilo; Sand, Daniel; Altmeyer, Peter; Bechara, Falk G

    2012-11-01

    The microprocessor complex mediates intranuclear biogenesis of precursor microRNAs from the primary microRNA transcript. Extranuclear, mature microRNAs are incorporated into the RNA-induced silencing complex (RISC) before interaction with complementary target mRNA leads to transcriptional repression or cleavage. In this study, we investigated the expression profiles of the microprocessor complex subunit DiGeorge syndrome critical region gene 8 (DGCR8) and the RISC components argonaute-1 (AGO1), argonaute-2 (AGO2), as well as double-stranded RNA-binding proteins PACT, TARBP1, and TARBP2 in epithelial skin cancer and its premalignant stage. Patients with premalignant actinic keratoses (AK, n = 6), basal cell carcinomas (BCC, n = 15), and squamous cell carcinomas (SCC, n = 7) were included in the study. Punch biopsies were harvested from the center of the tumors (lesional), from healthy skin sites (intraindividual controls), and from healthy skin sites in a healthy control group (n = 16; interindividual control). The DGCR8, AGO1, AGO2, PACT, TARBP1, and TARBP2 mRNA expression levels were detected by quantitative real-time reverse transcriptase polymerase chain reaction. The DGCR8, AGO1, AGO2, PACT, and TARBP1 expression levels were significantly higher in the AK, BCC, and SCC groups than the healthy controls (P  0.05). This study indicates that major components of the miRNA pathway, such as the microprocessor complex and RISC, are dysregulated in epithelial skin cancer.

  6. Barcelona'92 : los Juegos de la comunicación

    OpenAIRE

    Moragas Spà, Miquel de,

    1992-01-01

    Este artículo es una síntesis de algunas partes del libro del autor de Juegos Olímpicos y Comunicación, publicado por FUNDESCO. La investigación correspondiente se pudo realizar en el Centre d'Estudis Olímpics de la Universitat Autònoma de Barcelona con el apoyo de la C.I.C.Y.T. (Centro de Investigación Científica y Tecnológica), en el Plan Nacional de Investigación (Área del Deporte). Esta versión fue preparada para la revista Telos de Fundesco, en enero de 1992. This article is a summary...

  7. Kepler in Curricula of the Agrarian Engineering School of Barcelona

    Science.gov (United States)

    Fillet, Jaume Fabregat

    In the Agrarian Engineering school of Barcelona, within the subject of Mathematics some references to history are included, particularly about several great scientists, like Kepler who is famous for his astronomical laws, but he was occupied by other subjects for example he wrote about wine barrels. It is interesting to introduce students to dynamic aspects of science and not only to program an ordered mathematical knowledge of physical systems or, worse, only to offer a collection of numerical recipes or only presenting the foundation of theory; it is important to promote relationships between technical topics and other lateral matters. To instigate an integral education, students did a brief study entitled "Kepler, mathematics and agriculture"; students were guided to link Kepler with agriculture through astronomy.

  8. Especificació i disseny d'una aplicació pel ZOO de Barcelona

    OpenAIRE

    Àngel Torras, Marta

    2016-01-01

    Aquest TFG es basa en el disseny i l'especificació d'una aplicació pel Zoo de Barcelona. Es tracta d'una app enfocada a millorar la visita al parc, oferint funcionalitats i informació que permetin a l'usuari gaudir més de la visita al Zoo de Barcelona. This TFG is based on design and especification of an app for Barcelona Zoo. It aims to enhance the visitor's experience, by offering functionality and wider information so that the visit to the Zoo may be better appreciated by anyone using t...

  9. Sprawl in Barcelona Region and the PTMB 2010

    Directory of Open Access Journals (Sweden)

    Antonio Acierno

    2012-04-01

    Full Text Available The Barcelona metropolitan region is composed of 164 municipalities distributed over an area of ​​about 3234 sq km with a population of 5 million inhabitants. In the last decades, the growth of metropolitan region has been characterized by some critical problems: high land occupation, dispersed occupation of the territory, low building density, considerable fragmentation and high specialization (residential developments, commercial centers, industrial areas, etc, growing social segregation. The sprawl, together with changes in economic and social structure, caused a loss of landscape and environment values in the territory, a reduction of natural areas, involving an increase in consumption of resources. The sprawling development was already evident in the early 1970s, and a study of dynamic of the sprawl was conducted to show the main features of this process. The morphology of discontinuity, fragmentation and heterogeneity are common features of the metropolitan regions in Southern Europe. The changes from the traditional compact city to a dispersed one caused important effects in the functioning of the territories and in the lifestyles of their users. The main problems addressed by the plan have been identified in the sprawl, the territorial fragmentation and the growing social segregation. The adoption of the Barcelona Metropolitan Plan is a notable innovation in the scenario of spatial planning and urban policies in Catalonia. In fact, the PTMB, that comes to close more than 40 years of controversy and failed attempts, presents some aspects of particular interest and represents a planning tool providing a methodology for administrative and political management for the future. The plan has been proposed by regional government in concert with municipalities through an interesting participatory process that has secured a broad consensus. The plan structure founded on three main systems: Open Spaces, Settlements and Infrastructures; all of

  10. Nuclear Reactors

    Energy Technology Data Exchange (ETDEWEB)

    Hogerton, John

    1964-01-01

    This pamphlet describes how reactors work; discusses reactor design; describes research, teaching, and materials testing reactors; production reactors; reactors for electric power generation; reactors for supply heat; reactors for propulsion; reactors for space; reactor safety; and reactors of tomorrow. The appendix discusses characteristics of U.S. civilian power reactor concepts and lists some of the U.S. reactor power projects, with location, type, capacity, owner, and startup date.

  11. Un nuevo centro: el Institut Botànic de Barcelona

    OpenAIRE

    Valentin, Sandra; Manso Calzada, Isidora

    2000-01-01

    El Institut Botànic de Barcelona es un centro mixto (CSIC - Ayuntamiento de Barcelona) y su biblioteca está especializada en botánica. Entre sus fondos incluye revistas especializadas, floras regionales y generales de todo el mundo, libros de horticultura, jardinería, botánica sistemática, ecología, nomenclatura botánica, etc

  12. Service-Learning in Physical Education Teacher Training. Physical Education in the Modelo Prison, Barcelona

    OpenAIRE

    Teresa Lleixà; Merche Ríos

    2015-01-01

    In the Psychiatric Unit of the Modelo Prison, Barcelona, a physical education programme is carried out annually with the participation of University of Barcelona (UB) students. In this context, we carried out a study based on service-learning parameters. The aim of the study was twofold: to determine the impact on inmates of the physical education programme that was undertaken with university students; and to assess what university students’ learnt in the prison-based socio-educational interv...

  13. First epidemiological report of feline heartworm infection in the Barcelona metropolitan area (Spain)

    OpenAIRE

    Montoya-Alonso, José Alberto; CARRETÓN, Elena; García-Guasch, Laín; Expósito, Jordi; Armario, Belén; Morchón, Rodrigo; Simón, Fernando

    2014-01-01

    Background The metropolitan area of Barcelona is the most densely populated metropolitan area on the Mediterranean coast. Several studies have reported the presence of canine heartworm disease in this region; however, there are no published epidemiological data regarding feline heartworm in this region and the prevalence in this species remains unknown. Methods Serum samples from 758 cats living in the metropolitan area of Barcelona (Spain) were collected between 2012 and 2013. To establish t...

  14. Feasibility of a Vietnamese café in Spain : Case: Café Hanoi, Barcelona, Spain

    OpenAIRE

    Nguyen, Tra My

    2016-01-01

    This study covers the feasibility of a business idea – a Vietnamese café in the city of Barcelona, Spain. The study is the preliminary of a business plan. Therefore, it aims to discover the environment surrounding the café in Barcelona, Spain. The study employs descriptive approach, using both quantitative and qualitative methods. The data collection includes both primary and secondary data. The primary data is collected through focus group, interviews and questionnaire. The secondary dat...

  15. CITIES COMPETITION, PLACE MARKETING AND ECONOMIC DEVELOPMENT IN SOUTH EUROPE: THE BARCELONA CASE AS FDI DESTINATION

    OpenAIRE

    Metaxas, Theodore

    2010-01-01

    The aim of the article is to focus on the especially interesting area of South Europe and to present and points out the strategic development process, in one of the most representative examples of its successful implementation, which is the city of Barcelona. Barcelona, which in the last 20 years, managed to increase its competitiveness becoming one of the most attractive investment destinations on international level. The city?s economic dynamism, its strategic position in the South of Europ...

  16. Safety evaluation report related to the renewal of the operating license for the research reactor at the University of Florida. Docket No. 50-83

    International Nuclear Information System (INIS)

    This Safety Evaluation Report for the application filed by the University of Florida (UF) for a renewal of Operating License R-56 to continue to operate its Argonaut-type research reactor has been prepared by the Office of Nuclear Reactor Regulation of the US Nuclear Regulatory Commission. The facility is owned and operated by the University of Florida and is located on the UF campus in Gainesville, Alachua County, Florida. The staff concludes that the reactor facility can continue to be operated by UF without endangering the health and safety of the public

  17. Trabajo sexual en Barcelona. Sobre la gestión municipal del espacio público

    Directory of Open Access Journals (Sweden)

    Julieta Vartabedian

    2011-02-01

    Full Text Available In this paper, the author will reflect on the management of public spaces in Barcelona through the case of sex work. The different ways that the Barcelona City Council has promoted the control and restriction of the free exercise of street sex work will be discussed. Recognising that the spaces are not fully accessible to everyone, the model of "civility" that Barcelona plans to implement will be explained. As a result of former zoning practices, there is a political will to make this activity "invisible", which perpetuates the vulnerability of sex workers themselves. En este artículo la autora reflexionará sobre la gestión del espacio público en Barcelona a través del caso del trabajo sexual. Se analizarán las distintas modalidades que el Ayuntamiento de Barcelona ha promovido para, en definitiva, controlar y restringir el libre ejercicio del trabajo sexual callejero. Partiendo del reconocimiento que los espacios no son plenamente accesibles para todas y todos, se explicará el modelo de “civismo” que Barcelona pretende implementar. Mediante antiguas prácticas de zonificación, se observa una voluntad política de invisibilizar esta actividad al mismo tiempo que se perpetúa la vulnerabilidad de las propias trabajadoras.Download this paper from SSRN: http://ssrn.com/abstract=1953623

  18. The Bernades herbarium in the Botanic Institute of Barcelona (BC

    Directory of Open Access Journals (Sweden)

    Ibáñez, N.

    2009-12-01

    Full Text Available The BC-Bernades herbarium is one of the oldest collections conserved in the Botanical Institute of Barcelona. It contains part of the field collections of Miquel Bernades i Mainader and Miquel Bernades i Clarís, doctors of medicine and botanists of Catalonian origin living in Madrid in the 18th century. The collection consists of 817 sheets, the complete list provided in the annexe. We also present information concerning the localities of certain specific recollections, the taxonomic groups and families, as well as a list of sheets of special interest. This list contains witness of cornfield weed now very rare or extinct in Iberian lands, such as Hymenocarpos circinatus (L. Savi or Securigera securidaca (L. Degen & Dörfl , and also some of the first witness known from Spain of introduced plants, such as Aster cordifolius L. or Bidens bipinnata L.

    [es] El herbario BC-Bernades es una de las colecciones más antiguas conservadas en el Instituto Botánico de Barcelona. Contiene parte de las recolecciones de Miquel Bernades y Mainader y Miquel Bernades y Clarís, médicos y botánicos catalanes del siglo XVIII establecidos en Madrid. Consta de 817 pliegos, la relación de los cuales presentamos en un anexo. También mostramos datos sobre las localidades de recolección, grupos taxonómicos y familias presentes, y una relación de pliegos de interés. Entre estos aparecen testimonios de plantas arvenses extinguidas o muy raras en tierras ibéricas como Hymenocarpos circinatus (L. Savi o Securigera securidaca (L. Degen & Dörfl , y también algunos de los primeros testimonios conocidos en España de plantas introducidas como Aster cordifolius L. o Bidens bipinnata L. [ct] L’herbari BC-Bernades és una de les col·leccions més antigues de les conservades a l’Institut Botànic de Barcelona. Conté part de les recol·leccions de Miquel Bernades i Mainader i Miquel Bernades

  19. The Argonaute CSR-1 and its 22G-RNA co-factors target germline genes and are required for holocentric chromosome segregation

    OpenAIRE

    Claycomb, Julie M.; Batista, Pedro J; Pang, Ka Ming; Gu, Weifeng; Vasale, Jessica J.; van Wolfswinkel, Josien C.; Chaves, Daniel A.; Shirayama, Masaki; Mitani, Shohei; Ketting, René F.; Conte, Darryl; Mello, Craig C

    2009-01-01

    RNAi-related pathways regulate diverse processes, from developmental timing to transposon silencing. Here, we show that in C. elegans the Argonaute CSR-1, the RNA-dependent RNA polymerase EGO-1, the Dicer-related helicase DRH-3, and the Tudor-domain protein EKL-1 localize to chromosomes and are required for proper chromosome segregation. In the absence of these factors chromosomes fail to align at the metaphase plate and kinetochores do not orient to opposing spindle poles. Surprisingly, the ...

  20. L 'abastament de blat a la ciutat de Barcelona en temps d'Alfons el Benigne (1327-1336)

    OpenAIRE

    Mutgé Vives, Josefina

    2001-01-01

    The aim of this article is to study the question of wheat scarcity in Barcelona during the reign of Alphonse the Benign. Different aspects are boarded, such as: reasons of the endemic wheat shortage in Barcelona, the cerealistic policy established by the Crown and by the city Council, the routes of wheat arrival, different means that the Barcelona Council used so that merchants were interested in introducing cereal into the city, prices of cereals, kinds and qualities of cereals, weights and ...

  1. Sensitivity analysis of permeability parameters for flows on Barcelona networks

    Science.gov (United States)

    Rarità, Luigi; D'Apice, Ciro; Piccoli, Benedetto; Helbing, Dirk

    We consider the problem of optimizing vehicular traffic flows on an urban network of Barcelona type, i.e. square network with streets of not equal length. In particular, we describe the effects of variation of permeability parameters, that indicate the amount of flow allowed to enter a junction from incoming roads. On each road, a model suggested by Helbing et al. (2007) [11] is considered: free and congested regimes are distinguished, characterized by an arrival flow and a departure flow, the latter depending on a permeability parameter. Moreover we provide a rigorous derivation of the model from fluid dynamic ones, using recent results of Bretti et al. (2006) [3]. For solving the dynamics at nodes of the network, a Riemann solver maximizing the through flux is used, see Coclite et al. (2005) [4] and Helbing et al. (2007) [11]. The network dynamics gives rise to complicate equations, where the evolution of fluxes at a single node may involve time-delayed terms from all other nodes. Thus we propose an alternative hybrid approach, introducing additional logic variables. Finally we compute the effects of variations on permeability parameters over the hybrid dynamics and test the obtained results via simulations.

  2. Drugs of abuse in urban groundwater. A case study: Barcelona.

    Science.gov (United States)

    Jurado, A.; Mastroianni, N.; Vazquez-Suñe, E.; Carrera, J.; Tubau, I.; Pujades, E.; Postigo, C.; Lopez de Alda, M.; Barceló, D.

    2012-04-01

    This study is concerned with drugs of abuse (DAs) and their metabolites in urban groundwater at field scale in relation to (1) the spatial distribution of the groundwater samples, (2) the depth of the groundwater sample, (3) the presence of DAs in recharge sources, and (4) the identification of processes affecting the fate of DAs in groundwater. To this end, urban groundwater samples were collected in the city of Barcelona and a total of 21 drugs were analyzed including cocainics, amphetamine-like compounds, opioids, lysergics and cannabinoids and the prescribed drugs benzodiazepines. Overall, the highest groundwater concentrations and the largest number of detected DAs were found in zones basically recharged by a river that receives large amounts of effluents from waste water treatment plants (WWTPs). In contrast, the urbanized areas yielded not only lower concentrations but also a much smaller number of drugs, which suggests a local origin. In fact, cocaine and its metabolite were dominant in more prosperous neighbourhoods, whereas the cheaper (MDMA) was the dominant DA in poorer districts. Concentrations of DAs estimated mainly from the waste water fraction in groundwater samples were consistently higher than the measured ones, suggesting that DAs undergo removal processes in both reducing and oxidizing conditions.

  3. Chlorinated organic pesticides in marketed food: Barcelona, 2001-06

    International Nuclear Information System (INIS)

    This paper reports concentration levels of 22 chlorinated organic compounds (both primary compounds and metabolites) in food marketed in the city of Barcelona (Catalonia, Spain) in 2001-06. Samples included meat products, fish and seafood, eggs, milk and dairy, vegetal oils, cereal products and derivates, vegetables, fresh fruits, dry fruits, spices, formula and baby food, tea and wine. Levels of chlorinated organic compounds were determined by gas chromatography with selective detectors: electron capture (ECD), flame photometric (FPD) and confirmation with mass-spectrometry. Chlorinated organic pesticides were detected in 7 of the 1,484 samples analyzed in the 2001-06 period (0.5%): 1 dairy product, 1 fruit, 1 olive oil and 4 vegetables. Specific pesticides detected are lindane and endosulfan α, β or sulphate. A decrease in both the proportion of samples with detectable residues and in the variety of chlorinated pesticides found is visible when comparing these results with those of the previous 1989-2000 period. These results suggest the gradual disappearance of regulated chlorinated organic pesticides as a consequence of the growing worldwide implementation of current regulatory agreements

  4. Ciudadanos del este de Europa consumidores de drogas en Barcelona

    Directory of Open Access Journals (Sweden)

    González M.

    2003-01-01

    Full Text Available Desde mayo de 1999 hasta mayo de 2001, hemos contactado en el SAPS (Servicio de Atención Social y Sanitaria de Barcelona con usuarios de drogas de países del este de Europa. Acuden a centros terapéuticos gratuitos, aunque pagan por la organización del viaje unos 500 euros. Son jóvenes entre 18 y 30 años y mantienen el contacto con sus familiares. Conocen los riesgos de transmisión de enfermedades, pero suelen reutilizar las jeringas. Es alta la prevalencia de hepatitis C (92% y B (62% y menor la de infección por el VIH (19%. Si no abandonan las drogas, el retorno es un fracaso y tienen dificultades para proseguir los tratamientos con metadona o antirretrovirales. La respuesta asistencial ha de adecuarse a sus necesidades. Se debe procurar la mediación cultural y la información en los lugares de origen, supervisar los centros terapéuticos y diseñar alternativas a los abandonos. Hay que desarrollar la colaboración internacional, estimular programas de disminución de riesgos derivados del consumo y evitar que del tratamiento se haga un comercio.

  5. Ciudadanos del este de Europa consumidores de drogas en Barcelona Injecting drug users from Eastern Europe in Barcelona, Spain

    Directory of Open Access Journals (Sweden)

    M. González

    2003-06-01

    Full Text Available Desde mayo de 1999 hasta mayo de 2001, hemos contactado en el SAPS (Servicio de Atención Social y Sanitaria de Barcelona con usuarios de drogas de países del este de Europa. Acuden a centros terapéuticos gratuitos, aunque pagan por la organización del viaje unos 500 euros. Son jóvenes entre 18 y 30 años y mantienen el contacto con sus familiares. Conocen los riesgos de transmisión de enfermedades, pero suelen reutilizar las jeringas. Es alta la prevalencia de hepatitis C (92% y B (62% y menor la de infección por el VIH (19%. Si no abandonan las drogas, el retorno es un fracaso y tienen dificultades para proseguir los tratamientos con metadona o antirretrovirales. La respuesta asistencial ha de adecuarse a sus necesidades. Se debe procurar la mediación cultural y la información en los lugares de origen, supervisar los centros terapéuticos y diseñar alternativas a los abandonos. Hay que desarrollar la colaboración internacional, estimular programas de disminución de riesgos derivados del consumo y evitar que del tratamiento se haga un comercio.From May 1999 to May 2001, we made contact with injecting drug users from Eastern Europe in the healthcare and prevention service of the Red Cross (servicio de atención y prevención sociosanitaria [SAPS] in Barcelona (Spain. The users attended free therapeutic centers, but paid approximately 500 € for the trip. The users were aged between 18 and 30 years old and maintained family contact. The knew the risk of disease transmission, but often exchanged needles. The prevalence of hepatitis C (92% and B (62% was high but less than that of HIV (19%. If they did not stop taking drugs their return would be a failure and they would have difficulties in following methadone and antiretroviral treatments in their countries of origin. The healthcare provided in these centers should respond to user' needs: cultural mediation should be sought, as well as information from users' countries of origin

  6. French validation of the Barcelona Music Reward Questionnaire.

    Science.gov (United States)

    Saliba, Joe; Lorenzo-Seva, Urbano; Marco-Pallares, Josep; Tillmann, Barbara; Zeitouni, Anthony; Lehmann, Alexandre

    2016-01-01

    Background. The Barcelona Music Reward Questionnaire (BMRQ) questionnaire investigates the main facets of music experience that could explain the variance observed in how people experience reward associated with music. Currently, only English and Spanish versions of this questionnaire are available. The objective of this study is to validate a French version of the BMRQ. Methods. The original BMRQ was translated and adapted into an international French version. The questionnaire was then administered through an online survey aimed at adults aged over 18 years who were fluent in French. Statistical analyses were performed and compared to the original English and Spanish version for validation purposes. Results. A total of 1,027 participants completed the questionnaire. Most responses were obtained from France (89.4%). Analyses revealed that congruence values between the rotated loading matrix and the ideal loading matrix ranged between 0.88 and 0.96. Factor reliabilities of subscales (i.e., Musical Seeking, Emotion Evocation, Mood Regulation, Social Reward and Sensory-Motor) also ranged between 0.88 and 0.96. In addition, reliability of the overall factor score (i.e., Music reward) was 0.91. Finally, the internal consistency of the overall scale was 0.85. The factorial structure obtained in the French translation was similar to that of the original Spanish and English samples. Conclusion. The French version of the BMRQ appears valid and reliable. Potential applications of the BMRQ include its use as a valuable tool in music reward and emotion research, whether in healthy individuals or in patients suffering from a wide variety of cognitive, neurologic and auditory disorders. PMID:27019776

  7. Argonaute 2 in cell-secreted microvesicles guides the function of secreted miRNAs in recipient cells.

    Directory of Open Access Journals (Sweden)

    Zhiyuan Lv

    Full Text Available MicroRNAs (miRNAs secreted by cells into microvesicles (MVs form a novel class of signal molecules that mediate intercellular communication. However, several fundamental aspects of secreted miRNAs remain unknown, particularly the mechanism that governs the function or fate of exogenous miRNAs in recipient cells. In the present study, we provide evidence indicating that Argonaute 2 (Ago2 plays a role in stabilizing miRNAs and facilitating the packaging of secreted miRNAs into MVs. More importantly, Ago2 in origin cell-secreted MVs (but not in recipient cells directs the function of secreted miRNAs. First, Ago2 overexpression clearly increased the level of miR-16 in cells transfected with a miR-16 mimic by protecting the miRNAs from degradation in lysosomes. Second, Ago2 overexpression increased the level of miR-16 in cell-secreted MVs, suggesting that Ago2 may facilitate the packaging of secreted miRNAs into MVs. Third, exogenous miR-16 delivered by MVs within the origin cells significantly reduced the Bcl2 protein level in recipient cells, and miR-16 and Bcl2 mRNA were physically associated with exogenous HA-tagged Ago2 (HA-Ago2. Finally, the effect of MV-delivered miR-16 on the production of the Bcl2 protein in recipient cells was not abolished by knocking down Ago2 in the recipient cells.

  8. Collapse of germline piRNAs in the absence of Argonaute3 reveals somatic piRNAs in flies.

    Science.gov (United States)

    Li, Chengjian; Vagin, Vasily V; Lee, Soohyun; Xu, Jia; Ma, Shengmei; Xi, Hualin; Seitz, Hervé; Horwich, Michael D; Syrzycka, Monika; Honda, Barry M; Kittler, Ellen L W; Zapp, Maria L; Klattenhoff, Carla; Schulz, Nadine; Theurkauf, William E; Weng, Zhiping; Zamore, Phillip D

    2009-05-01

    Piwi-interacting RNAs (piRNAs) silence transposons in animal germ cells. piRNAs are thought to derive from long transcripts spanning transposon-rich genomic loci and to direct an autoamplification loop in which an antisense piRNA, bound to Aubergine or Piwi protein, triggers production of a sense piRNA bound to the PIWI protein Argonaute3 (Ago3). In turn, the new piRNA is envisioned to produce a second antisense piRNA. Here, we describe strong loss-of-function mutations in ago3, allowing a direct genetic test of this model. We find that Ago3 acts to amplify piRNA pools and to enforce on them an antisense bias, increasing the number of piRNAs that can act to silence transposons. We also detect a second, Ago3-independent piRNA pathway centered on Piwi. Transposons targeted by this second pathway often reside in the flamenco locus, which is expressed in somatic ovarian follicle cells, suggesting a role for piRNAs beyond the germline. PMID:19395009

  9. Independent chromatin binding of ARGONAUTE4 and SPT5L/KTF1 mediates transcriptional gene silencing.

    Directory of Open Access Journals (Sweden)

    M Jordan Rowley

    2011-06-01

    Full Text Available Eukaryotic genomes contain significant amounts of transposons and repetitive DNA elements, which, if transcribed, can be detrimental to the organism. Expression of these elements is suppressed by establishment of repressive chromatin modifications. In Arabidopsis thaliana, they are silenced by the siRNA-mediated transcriptional gene silencing pathway where long non-coding RNAs (lncRNAs produced by RNA Polymerase V (Pol V guide ARGONAUTE4 (AGO4 to chromatin and attract enzymes that establish repressive chromatin modifications. It is unknown how chromatin modifying enzymes are recruited to chromatin. We show through chromatin immunoprecipitation (ChIP that SPT5L/KTF1, a silencing factor and a homolog of SPT5 elongation factors, binds chromatin at loci subject to transcriptional silencing. Chromatin binding of SPT5L/KTF1 occurs downstream of RNA Polymerase V, but independently from the presence of 24-nt siRNA. We also show that SPT5L/KTF1 and AGO4 are recruited to chromatin in parallel and independently of each other. As shown using methylation-sensitive restriction enzymes, binding of both AGO4 and SPT5L/KTF1 is required for DNA methylation and repressive histone modifications of several loci. We propose that the coordinate binding of SPT5L and AGO4 creates a platform for direct or indirect recruitment of chromatin modifying enzymes.

  10. Argonaute2 Protein in Rat Spermatogenic Cells Is Localized to Nuage Structures and LAMP2-Positive Vesicles Surrounding Chromatoid Bodies.

    Science.gov (United States)

    Fujii, Yuki; Onohara, Yuko; Fujita, Hideaki; Yokota, Sadaki

    2016-04-01

    Localization of Argonaute2 (AGO2) protein--an essential component for the processing of small interfering RNA (siRNA)-directed RNA interference (RNAi) in RNA-induced silencing complex (RISC) in nuage of rat spermatogenic cells--was evaluated by immunofluorescence microscopy (IFM) and immunoelectron microscopy (IEM). AGO2 was shown, for the first time, to be localized to four previously classified types of nuage: irregularly shaped perinuclear granules (ISPGs), intermitochondrial cement (IMC), satellite bodies (SBs), and chromatoid bodies (CBs). Dual IEM staining for AGO2/Maelstrom (MAEL) protein or AGO2/MIWI protein demonstrated that AGO2 is colocalized with MAEL or MIWI proteins in these types of nuage. Dual IFM and IEM staining of AGO2/lysosomal-associated membrane protein 2 (LAMP2) showed that CB in round spermatids are in contact with and surrounded by LAMP2-positive vesicles, whereas nuage in pachytene spermatocytes are not. Taken together, our findings indicate that: (i) AGO2 in pachytene spermatocytes functions in ISPGs, IMC, and SBs; (ii) AGO2 in round spermatids functions in CBs, and that CBs are associated with lysosomal compartments. PMID:27029769

  11. Expression of the Argonaute protein PiwiL2 and piRNAs in adult mouse mesenchymal stem cells

    Energy Technology Data Exchange (ETDEWEB)

    Wu, Qiuling; Ma, Qi; Shehadeh, Lina A.; Wilson, Amber; Xia, Linghui; Yu, Hong [Department of Molecular and Cellular Pharmacology, Vascular Biology Institute, University of Miami Miller School of Medicine, Miami, FL 33136 (United States); Webster, Keith A., E-mail: kwebster@med.miami.edu [Department of Molecular and Cellular Pharmacology, Vascular Biology Institute, University of Miami Miller School of Medicine, Miami, FL 33136 (United States)

    2010-06-11

    Piwi (P-element-induced wimpy testis) first discovered in Drosophila is a member of the Argonaute family of micro-RNA binding proteins with essential roles in germ-cell development. The murine homologue of PiwiL2, also known as Mili is selectively expressed in the testes, and mice bearing targeted mutations of the PiwiL2 gene are male-sterile. PiwiL2 proteins are thought to protect the germ line genome by suppressing retrotransposons, stabilizing heterochromatin structure, and regulating target genes during meiosis and mitosis. Here, we report that PiwiL2 and associated piRNAs (piRs) may play similar roles in adult mouse mesenchymal stem cells. We found that PiwiL2 is expressed in the cytoplasm of metaphase mesenchymal stem cells from the bone marrow of adult and aged mice. Knockdown of PiwiL2 with a specific siRNA enhanced cell proliferation, significantly increased the number of cells in G1/S and G2/M cell cycle phases and was associated with increased expression of cell cycle genes CCND1, CDK8, microtubule regulation genes, and decreased expression of tumor suppressors Cables 1, LATS, and Cxxc4. The results suggest broader roles for Piwi in genome surveillance beyond the germ line and a possible role in regulating the cell cycle of mesenchymal stem cells.

  12. Study of the medieval lead cames used in the stained glass windows of the Monastery of Pedralbes (Barcelona

    Directory of Open Access Journals (Sweden)

    Cortés Pizano, F.

    2000-09-01

    Full Text Available This work includes an study of the glass windows of the "Monasterio de Pedralbes", in Barcelona, concerning lead as their main element.

    Se lleva a cabo un estudio de las vidrieras del Monasterio de Pedralbes, en Barcelona, en lo concerniente al plomo, como elemento principal de las mismas.

  13. La salsa en Barcelona: inmigración, identidad, músicas latinas y baile

    OpenAIRE

    Llano Camacho, Isabel

    2015-01-01

    La difusión de la salsa en España se inicia desde 1970 con la promoción de cantantes realizada por el sello discográfico Fania, sin embargo, en Barcelona es desde 1980 cuando empieza la popularización de músicos y orquestas a través de la radio, conciertos en directo, y cuando las orquestas locales interpretan famosas canciones de salsa del momento. En Barcelona, el estilo de baile cubano fue el primero en difundirse a inicios de 1990. Sin embargo, el estilo Los Ángeles comenzó a proliferar d...

  14. Estudio de viabilidad de hotel urbano de 4 estrellas en la ciudad de Barcelona

    OpenAIRE

    Expósito Sarmiento, Gil

    2010-01-01

    El estudio realizado trata sobre la implantación de un hotel de 4* en la ciudad de Barcelona, herramienta con la cual una cadena hotelera Americana pretende entrar en el mercado europeo. Barcelona es la ciudad trampolín escogida para dar el salto a este mercado. El hecho de que el motivo principal del proyecto no sea el hacer simplemente una inversión económica no impide que la sociedad haga un estudio de viabilidad para averiguar si este es factible, o sea rentable. La única d...

  15. Air quality in schools and children’s exposure to particulate pollution in Barcelona

    OpenAIRE

    Rivas Lara, Ioar

    2015-01-01

    L’exposició als contaminants atmosfèrics s’ha relacionat amb efectes negatius a la salut i els infants constitueixen un subgrup de la població particularment vulnerable. Es determinà la qualitat de l’aire a l’interior i exterior de 39 escoles de Barcelona i Sant Cugat del Vallès. El mateixos contaminants mesurats a les escoles també es monitoritzaren a una estació de fons urbà a Barcelona (UB-PR). Les concentracions de carboni negre equivalent (EBC), NO2 i partícules ultrafines (UFP) m...

  16. La construcció en l'arquitectura de Barcelona a final del segle XVIII.

    OpenAIRE

    Rosell Colomina, Jaume

    1996-01-01

    A partir de l'arxiu Renart dipositat a la Biblioteca de Catalunya, s'estudien els papers de Josep Renart i Closes (Barcelona 1746-1824), un destacat mestre de cases al servei de la Corona i també incipient professional liberal. Renart és important, sobretot, perquè va escriure una sèrie de textos encara inèdits, Els quinzenaris (dels que se n'ha transcrit una part) on passa revista a l'arquitectura barcelonina i a la construcció catalana del seu temps. Precisament en aquell temps Barcelona ex...

  17. Ginebra y Barcelona: breve relato de un señalado encuentro

    OpenAIRE

    Coll, César

    1994-01-01

    El 12 de noviembre de 1970 el profesor Jean Piaget era investido doctor honoris causa por la Universidad de Barcelona. Con motivo de aquel acto, el Departamento de Psicologia de la, en aquellos momentos, Facultad de Filosofia y Letras de la Universidad de Barcelona organizó un seminario de varios dias de duración sobre psicologia genética. El seminario estuvo dirigido por las profesoras Barbel Inhelder e Irhe Lézine, estrechas colaboradoras del profesor Piaget en Ginebra y Paris respectivamen...

  18. Architectural measures aimed at solving the problem of aircraft noise in buildings : the Barcelona Airport experience

    OpenAIRE

    Zamora i Mestre, Joan-Lluís

    2007-01-01

    Coinciding with the start of construction of the new extension of Barcelona airport (El Prat), the Executive Office of the Barcelona Plan (OEPB), depending on Spanish Airports and Air Navigation (AENA), was set up to manage all works related to this extension. The OEPB developed a specific Plan for Acoustic Insulation based on the DIA (Declaration of Environmental Impact, dated 9 January 2002) in order to deal with the acoustic impact of the opening of the third runway, the new joint use of t...

  19. Reading and censorship in early modern Europe Barcelona, 11-13 de diciembre de 2007 /

    OpenAIRE

    Vega Ramos, María José; Esteve, Cesc; Weiss, Julian

    2010-01-01

    La col·lecció Studia Aurea Monográfica, coeditada por la Universitat Autònoma de Barcelona y la Universitat de Girona, es una colección auspiciada por Studia Aurea. Revista de Literatura Española y Teoría Literaria del Renacimiento y Siglo de Oro.

  20. Spatial variability of trace elements and sources for improved exposure assessment in Barcelona

    NARCIS (Netherlands)

    Minguillón, M.C.; Cirach, M.; Hoek, G.; Brunekreef, B.; Tsai, M.; Hoogh, K. de; Jedynska, A.; Kooter, I.M.; Nieuwenhuijsen, M.; Querol, X.

    2014-01-01

    Trace and major elements concentrations in PM10 and PM2.5 were measured at 20 sites spread in the Barcelona metropolitan area (1 rural background, 6 urban background, 13 road traffic sites) and at 1 reference site. Three 2-week samples per site and size fraction were collected during 2009 using low

  1. Teaching and Learning in the Virtual Campus: The Case of the University of Barcelona

    Science.gov (United States)

    Gil, Juana M. Sancho; Sanchez, Joan-Anton

    2012-01-01

    This article is based on a research project aimed at analysing the teaching and learning models explicit and implicit in the different uses of e-learning platforms. From qualitative analysis of the interview with the coordinator of the Virtual Campus of the University of Barcelona (VC-UB) and the focus group with the 8 lecturers, emerged both the…

  2. A conceptual model to manage supply sequences in automotive industry for Nissan Barcelona

    OpenAIRE

    Bautista Valhondo, Joaquín; Fortuny Santos, Jordi

    2015-01-01

    This paper presents an action research experience in Douki-Seisan in cooperation with the Nissan Factory in Barcelona. Three suppliers are involved in the experience to improve the way they perform synchro deliveries of parts to Nissan. Supplier issues are analysed and a decision making tool is developed for a supplier.

  3. From Strategic Planning to Development Initiatives: a first reflection on the situation of Lisbon and Barcelona

    OpenAIRE

    Marques, Bruno Pereira

    2014-01-01

    MARQUES, B.P. (2014) From Strategic Planning to Development Initiatives: a first reflection on the situation of Lisbon and Barcelona, in 20th APDR Congress Proceddings, APDR and UÉvora, Évora, pp. 850-857, ISBN 978-989-8780-01-0.

  4. Trends in socioeconomic inequalities in cancer mortality in Barcelona: 1992–2003

    Directory of Open Access Journals (Sweden)

    Pasarín M Isabel

    2009-01-01

    Full Text Available Abstract Background The objective of this study was to assess trends in cancer mortality by educational level in Barcelona from 1992 to 2003. Methods The study population comprised Barcelona inhabitants aged 20 years or older. Data on cancer deaths were supplied by the system of information on mortality. Educational level was obtained from the municipal census. Age-standardized rates by educational level were calculated. We also fitted Poisson regression models to estimate the relative index of inequality (RII and the Slope Index of Inequalities (SII. All were calculated for each sex and period (1992–1994, 1995–1997, 1998–2000, and 2001–2003. Results Cancer mortality was higher in men and women with lower educational level throughout the study period. Less-schooled men had higher mortality by stomach, mouth and pharynx, oesophagus, larynx and lung cancer. In women, there were educational inequalities for cervix uteri, liver and colon cancer. Inequalities of overall and specific types of cancer mortality remained stable in Barcelona; although a slight reduction was observed for some cancers. Conclusion This study has identified those cancer types presenting the greatest inequalities between men and women in recent years and shown that in Barcelona there is a stable trend in inequalities in the burden of cancer.

  5. Barcelona's water supply, 1867–1967 : the transition to a modern system

    OpenAIRE

    Guàrdia Bassols, Manuel; Rosselló i Nicolau, Maribel; Garriga Bosch, Sergi

    2013-01-01

    Barcelona's water supply since 14th century to 1867, the Eixample's water supply problem the development of modern water supply since 1867 to 1967 the new sanitation system impact on water consumption water's slow entry into the domestic sphere from post-war restrictions to widespread water consumption. Peer Reviewed

  6. A Potential Protein-RNA Recognition Event Along the RISC-Loading Pathway from the Structure of A. aeolicus Argonaute with Externally Bound siRNA

    Energy Technology Data Exchange (ETDEWEB)

    Yuan,Y.; Pei, Y.; Chen, H.; Tuschl, T.; Patel, D.

    2006-01-01

    Argonaute proteins are key components of the RNA-induced silencing complex (RISC). They provide both architectural and catalytic functionalities associated with small interfering RNA (siRNA) guide strand recognition and subsequent guide strand-mediated cleavage of complementary mRNAs. We report on the 3.0 {angstrom} crystal structures of 22-mer and 26-mer siRNAs bound to Aquifex aeolicus Argonaute (Aa-Ago), where one 2 nt 3' overhang of the siRNA inserts into a cavity positioned on the outer surface of the PAZ-containing lobe of the bilobal Aa-Ago architecture. The first overhang nucleotide stacks over a tyrosine ring, while the second overhang nucleotide, together with the intervening sugar-phosphate backbone, inserts into a preformed surface cavity. Photochemical crosslinking studies on Aa-Ago with 5-iodoU-labeled single-stranded siRNA and siRNA duplex provide support for this externally bound siRNA-Aa-Ago complex. The structure and biochemical data together provide insights into a protein-RNA recognition event potentially associated with the RISC-loading pathway.

  7. Natural variation of the amino-terminal glutamine-rich domain in Drosophila argonaute2 is not associated with developmental defects.

    Directory of Open Access Journals (Sweden)

    Daniel Hain

    Full Text Available The Drosophila argonaute2 (ago2 gene plays a major role in siRNA mediated RNA silencing pathways. Unlike mammalian Argonaute proteins, the Drosophila protein has an unusual amino-terminal domain made up largely of multiple copies of glutamine-rich repeats (GRRs. We report here that the ago2 locus produces an alternative transcript that encodes a putative short isoform without this amino-terminal domain. Several ago2 mutations previously reported to be null alleles only abolish expression of the long, GRR-containing isoform. Analysis of drop out (dop mutations had previously suggested that variations in GRR copy number result in defects in RNAi and embryonic development. However, we find that dop mutations genetically complement transcript-null alleles of ago2 and that ago2 alleles with variant GRR copy numbers support normal development. In addition, we show that the assembly of the central RNAi machinery, the RISC (RNA induced silencing complex, is unimpaired in embryos when GRR copy number is altered. In fact, we find that GRR copy number is highly variable in natural D. melanogaster populations as well as in laboratory strains. Finally, while many other insects share an extensive, glutamine-rich Ago2 amino-terminal domain, its primary sequence varies drastically between species. Our data indicate that GRR variation does not modulate an essential function of Ago2 and that the amino-terminal domain of Ago2 is subject to rapid evolution.

  8. miRNA–target chimeras reveal miRNA 3′-end pairing as a major determinant of Argonaute target specificity

    Science.gov (United States)

    Moore, Michael J.; Scheel, Troels K. H.; Luna, Joseph M.; Park, Christopher Y.; Fak, John J.; Nishiuchi, Eiko; Rice, Charles M.; Darnell, Robert B.

    2015-01-01

    microRNAs (miRNAs) act as sequence-specific guides for Argonaute (AGO) proteins, which mediate posttranscriptional silencing of target messenger RNAs. Despite their importance in many biological processes, rules governing AGO–miRNA targeting are only partially understood. Here we report a modified AGO HITS-CLIP strategy termed CLEAR (covalent ligation of endogenous Argonaute-bound RNAs)-CLIP, which enriches miRNAs ligated to their endogenous mRNA targets. CLEAR-CLIP mapped ∼130,000 endogenous miRNA–target interactions in mouse brain and ∼40,000 in human hepatoma cells. Motif and structural analysis define expanded pairing rules for over 200 mammalian miRNAs. Most interactions combine seed-based pairing with distinct, miRNA-specific patterns of auxiliary pairing. At some regulatory sites, this specificity confers distinct silencing functions to miRNA family members with shared seed sequences but divergent 3′-ends. This work provides a means for explicit biochemical identification of miRNA sites in vivo, leading to the discovery that miRNA 3′-end pairing is a general determinant of AGO binding specificity. PMID:26602609

  9. Safety-evaluation report related to the renewal of the operating license for the research reactor at the Iowa State University (Docket No. 50-116)

    International Nuclear Information System (INIS)

    This Safety Evaluation Report for the application filed by the Iowa State University (ISU) for a renewal of the Class 104 Operating License R-59 to continue to operate its Argonaut-type research reactor has been prepared by the Office of Nuclear Reactor Regulation of the US Nuclear Regulatory Commission. The facility is owned and operated by the Iowa State University, and is located on the ISU campus in Ames, Story County, Iowa. The staff concludes that the reactor facility can continue to be operated by ISU without endangering the health and safety of the public. The principal matters reviewed are: design, testing, and performance of the reactor components and systems; the expected consequences of credible accidents; the licensee's management organization; the method used for the control of radiological effluents; the licensee's technical specifications; financial data and information; the physical protection program; procedures for training reactor operators; and emergency plans. 11 references, 15 figures, 13 tables

  10. N Reactor

    Data.gov (United States)

    Federal Laboratory Consortium — The last of Hanfordqaodmasdkwaspemas7ajkqlsmdqpakldnzsdflss nine plutonium production reactors to be built was the N Reactor.This reactor was called a dual purpose...

  11. RMB. The new Brazilian multipurpose research reactor

    International Nuclear Information System (INIS)

    Brazil has four research reactors (RR) in operation: IEA-R1, a 5 MW pool type RR; IPR-R1, a 100 kW TRIGA type RR; ARGONAUTA, a 500 W Argonaut type RR, and IPEN/MB-01, a 100 W critical facility. The first three were constructed in the 50's and 60's, for teaching, training, and nuclear research, and for many years they were the basic infrastructure for the Brazilian nuclear developing program. The last, IPEN/MB-01, is the result of a national project developed specifically for qualification of reactor physics codes. Considering the relative low power of Brazilian research reactors, with exception of IEAR1, none of the other reactors are feasible for radioisotope production, and even IEA-R1 has a limited capacity. As a consequence, since long ago, 100% of the Mo-99 needed to attend Brazilian nuclear medicine services has been imported. Because of the high dependence on external supply, the international Moly-99 supply crisis that occurred in 2008/2009 affected significantly Brazilian nuclear medicine services, and as presented in previous IAEA events, in 2010 Brazilian government formalized the decision to build a new research reactor. The new reactor named RMB (Brazilian Multipurpose Reactor) will be a 30 MW open pool type reactor, using low enriched uranium fuel. The facility will be part of a new nuclear research centre, to be built about 100 kilometres from Sao Paulo city, in the southern part of Brazil. The new nuclear research centre will have several facilities, to use thermal and cold neutron beams; to produce radioisotopes; to perform neutron activation analysis; and to perform irradiations tests of materials and fuels of interest for the Brazilian nuclear program. An additional facility will be used to store, for at least 100 years, all the fuel used in the reactor. The paper describes the main characteristics of the new centre, emphasising the research reactor and giving a brief description of the laboratories that will be constructed, It also presents the

  12. RMB. The new Brazilian multipurpose research reactor

    Energy Technology Data Exchange (ETDEWEB)

    Perrotta, Jose Augusto; Soares, Adalberto Jose [Comissao Nacional de Energia Nuclear (CNEN) (Brazil)

    2015-01-15

    Brazil has four research reactors (RR) in operation: IEA-R1, a 5 MW pool type RR; IPR-R1, a 100 kW TRIGA type RR; ARGONAUTA, a 500 W Argonaut type RR, and IPEN/MB-01, a 100 W critical facility. The first three were constructed in the 50's and 60's, for teaching, training, and nuclear research, and for many years they were the basic infrastructure for the Brazilian nuclear developing program. The last, IPEN/MB-01, is the result of a national project developed specifically for qualification of reactor physics codes. Considering the relative low power of Brazilian research reactors, with exception of IEAR1, none of the other reactors are feasible for radioisotope production, and even IEA-R1 has a limited capacity. As a consequence, since long ago, 100% of the Mo-99 needed to attend Brazilian nuclear medicine services has been imported. Because of the high dependence on external supply, the international Moly-99 supply crisis that occurred in 2008/2009 affected significantly Brazilian nuclear medicine services, and as presented in previous IAEA events, in 2010 Brazilian government formalized the decision to build a new research reactor. The new reactor named RMB (Brazilian Multipurpose Reactor) will be a 30 MW open pool type reactor, using low enriched uranium fuel. The facility will be part of a new nuclear research centre, to be built about 100 kilometres from Sao Paulo city, in the southern part of Brazil. The new nuclear research centre will have several facilities, to use thermal and cold neutron beams; to produce radioisotopes; to perform neutron activation analysis; and to perform irradiations tests of materials and fuels of interest for the Brazilian nuclear program. An additional facility will be used to store, for at least 100 years, all the fuel used in the reactor. The paper describes the main characteristics of the new centre, emphasising the research reactor and giving a brief description of the laboratories that will be constructed, It also

  13. Urban Governance of Employment Activation. The Case of Barcelona Activa (Spain Governança urbana em ativação do emprego: o caso de Barcelona Activa (Espanha

    Directory of Open Access Journals (Sweden)

    Alessandro Gentile

    2011-09-01

    Full Text Available Within the framework of rescaling nation-State and improving new modes of governance, activation policieshave to be interpreted as qualified initiatives for economic growth and social integration at a subnationallevel and, specifically, in regional and urban contexts. Barcelona Activa is the local agency of theBarcelona City Council (Spain designed for business improvement and employment quality through horizontalsubsidiary and public-private partnerships. This agency acts as a pivotal body of the municipaladministration in order to implement a variety of programs aimed at labour and professional empowerment,small and medium-sized companies creation and urban marketing. The paper focuses on BarcelonaActiva’s strategies, outcomes and criticisms in the current financial crisis, approaching its institutional rolefor the development of Barcelona as one of the main southern gateways to Europe.

  14. Defuelling of the UTR-300 research reactor

    Energy Technology Data Exchange (ETDEWEB)

    Scott, R.D.; Banford, H.M.; East, B.W. [Scottish Universities Research and Reactor Centre, Glasgow (United Kingdom)

    1997-07-01

    The UTR-300 reactor at the Scottish Universities Research and Reactor Centre was based on the original Argonaut design with two aluminium core tanks set in a graphite reflector each containing six fuel elements cooled and moderated by water flowing up through the tanks in a closed primary circuit. The fuel plates in the original 13-plate elements were uranium oxide-aluminium with a 22g loading of 90% {sup 235}U. After 7 years of operation at 100 kW (10 kW average), the maximum power was increased to 300 kW (30 kW average) and, in order to maintain the operational excess reactivity, it was necessary to add another plate to each element progressively over the years until they all contained 14 plates. These extra plates were uranium metal-aluminium with 24.5 g of 90% {sup 235}U. No further modification of the elements was possible and so, with reactivity steadily decreasing, and for a variety of other reasons, a decision was taken to cease operation in September 1995. This paper describes the procedures whereby the fuel was unloaded from the core into a UNIFETCH flask equipped with a specially designed rotating gamma ray shield and then transported on two separate loads to Dounreay for reprocessing. (author)

  15. Defuelling of the UTR-300 research reactor

    Energy Technology Data Exchange (ETDEWEB)

    Scott, R.D.; Banford, H.M.; East, B.W. [Scottish Universities Research and Reactor Centre, Glasgow (United Kingdom)

    1997-07-01

    The UTR-300 reactor at the Scottish Universities Research and Reactor Centre was based on the original Argonaut design with two aluminium core tanks set in a graphite reflector each containing six fuel elements cooled and moderated by water flowing up through the tanks in a closed primary circuit. The fuel plates in the original 13-plate elements were uranium oxide-aluminium with a 22g loading of 90% {sup 235}U. After 7 years of operation at 100 kW (10 kW average), the maximum power was increased to 300 kW (30 kW average) and, in order to maintain the operational excess reactivity, it was necessary to add another plate to each element progressively over the years until they all contained 14 plates. These extra plates were uranium metal-aluminium with 24.5 g of 90% {sup 235}U. No further modification of the elements was possible and so, with reactivity steadily decreasing, and for a variety of other reasons, a decision was taken to cease operation in September 1995. This paper describes the procedures whereby the fuel was unloaded from the core into a UNIFETCH flask equipped with a specially designed rotating gamma ray shield and then transported on two separate loads to Dounreay for reprocessing. (author) 2 figs., 2 tabs., refs.

  16. Evolution of industrial wastewater pollution in the Barcelona Metropolitan Area; Evolucion de la contaminacion industrial en las aguas residuales del area metropolitana de Barcelona

    Energy Technology Data Exchange (ETDEWEB)

    Mantecon Pascual, R.

    2005-07-01

    The Environmental Agency of the Barcelona Metropolitan Area has full powers regarding sewerage. Industrial wastewater emptied into the public sewer system has been monitored and analysed since 1988. the data showing the evolution of the pollution in industrial wastewater are presented, broken down by activities and parameters. These data are based on the analysis of 14,528 samples taken during 19,555 inspections of 5,655 factories. It was found that there has been a gradual improvement in the quality of the effluents. Failure to meet the requirements concerning one or more of the physico-chemical parameters fell from 71% to 39% of the samples analysed. (Author)

  17. Muusikamaailm : Sibeliuse preemia laureaat on Ligeti. Uusooperid Turus, Milanos, Barcelonas. Aasta dirigent on Daniel Barenboim / Priit Kuusk

    Index Scriptorium Estoniae

    Kuusk, Priit, 1938-

    2000-01-01

    Wihuri fondi Sibeliuse preemia sai G. Ligeti. Uusooperitest Turu toomkirikus, Milano La Scala ja Barcelona Gran Teatre del Liceu laval. D. Barenboim pälvis heliplaadipreemia Echo Klassik koos aasta dirigendi 2000 tiitliga

  18. Patrimonios incómodos para la imagen que Barcelona ofrece al mundo

    Directory of Open Access Journals (Sweden)

    Reventós Gil de Biedma, Ana

    2007-01-01

    Full Text Available Barcelona is today a city of reference within the world’s tourist map. Created as a process of both an economic evolution towards the third sector as well as a powerful brand image, from the Olympics up to nowadays. Within this scene, Culture and Arts have been pushed at the center of the strategy, building a “cultural spectacle” aimed to differentiate the city’s offer in the market. Furthermore, some specific icons oriented to give it a Catalan, Cosmopolitan and Modern identity are promoted, adding also new symbolic values such as diversity, tolerance or Mediterranean character. Meaning that some range of cultural heritages should be reinforced while others are put aside or even hidden. Barcelona appears then as the result of a perfectly drawn political strategic planning, under the appearance of social consensus and citizens’ involvement

  19. Oral Health-Related Quality of Life in institutionalized elderly in Barcelona (Spain)

    OpenAIRE

    Cornejo, Marco; Pérez de, Gloria; Lima, Kenio-Costa de; Casals Peidró, Elías; Borrell, Carme

    2013-01-01

    Objective: The objective of this study is to describe the oral health status and the factors associated with oral health-related quality of life (OHRQoL) in people aged 65 and older institutionalized in Barcelona in 2009. Study Design: Cross sectional study in 194 elderly. The dependent variable was poor OHRQoL, according to the Geriatric Oral Health Assessment Index (GOHAI). The independent variables were socio-demographic data, last dental visit, subjective and objective oral health status....

  20. Environmental metabolism of educational services : case study of nursery schools in the city of Barcelona

    OpenAIRE

    Sanjuan Delmás, David; Petit, Anna; Martínez Blanco, Julia; Rieradevall, Joan

    2015-01-01

    The environmental analysis of public nursery schools is of great interest since they are crucial in the early education of children and are expected to show high environmental standards. This paper aims to analyse the environmental profile (energy, water and transport flows) of this sector. A sample of 12 public nursery schools belonging to the Scholar Agenda 21 (SA21) of the city of Barcelona were selected given their data quality (eight centres applied to all analysis) to determine their en...

  1. Virtual Visit to the ATLAS Control Room by the University of Barcelona

    CERN Multimedia

    2013-01-01

    Future Learning is an initiative at the University of Barcelona - Faculty of Pedagogy and Education - aimed at developing research on the educational, cultural and socio-economic aspects of the use of ICT in learning settings, with special emphasis on virtual learning and eLearning. In the framework of the PATHWAY EU project, Future Learning is leading a series of teacher training activities around the CERN mini-exhibition that is touring Spain this year.

  2. Employment descentralisation: polycentric compaction or sprawl? The case of the Barcelona Metropolitan Region 1986-1996

    OpenAIRE

    García López, Miquel-Àngel; Muñiz, Iván

    2005-01-01

    The Barcelona Metropolitan Region (BMR) has been repeatedly characterised as a polycentric-type urban system. The aim of this study is to corroborate this affirmation by making use of a methodology that enables the identifying of employment subcentres and valuing of the degree of polycentrism of the BMR in 1986 and 1996. The results obtained in the two years confirm the existence and extension of the polycentrism.

  3. La cinematograf??a anarquista en Barcelona durante la Guerra Civil (1936-1939)

    OpenAIRE

    Mart??nez Mu??oz, Pau

    2008-01-01

    La tesi doctoral tracta sobre la producci?? cinematogr??fica realitzada pel moviment anarcosindicalista a Barcelona durant la Guerra Civil espanyola (1936-1939). Un corpus total de vuitanta tres t??tols, malgrat a l'actualitat nom??s es conserven quaranta i quatre cintes i no totes complertes.La investigaci?? est?? centrada en la recopilaci?? i catalogaci?? exhaustiva de tota la filmografia existent: reportatges de guerra, documentals de propaganda i pel??l??cules de ficci??. Se ha realitzat ...

  4. Celosvětová marketingová strategie klubu FC Barcelona

    OpenAIRE

    Podzimek, David

    2013-01-01

    This bachelor's dissertation concerns itself with the marketing strategy of the FC Barcelona football club, as a leading European mega-club and one of the most popular sports clubs in the world. The work endeavours to analyse the approach of the aforementioned club to its marketing activities undertaken on a global scale and to inspect the prerequisites for the functioning of its marketing strategy using the example of domestic football fans and based on an evaluation of marketing research, w...

  5. Scientific 'marvels' in the public sphere : Barcelona and its 1888 International Exhibition

    OpenAIRE

    Nieto-Galan, Agustí

    2012-01-01

    This paper examines the scientific culture of the 1888 Barcelona International Exhibition from different perspectives. Firstly, it emphasises how controversy rather than consensus imbued the everyday life of the city during that exceptional event, from April to December 1888. Secondly, the article discusses how science—including science, technology and medicine—became a tool in political debates about the pros and contras of the exhibition. Thirdly, through the careful analysis of particular ...

  6. Seawater intrusion barrier in the deltaic Llobregat aquifer (Barcelona, Spain): performance and pilot phase results

    OpenAIRE

    Ortuño Gobern, Felip; Molinero Huguet, Jorge José; Custodio Gimena, Emilio; Juárez Álvarez, Iker; Garrido, Teresa; Fraile, Josep

    2011-01-01

    The main aquifer of the Llobregat Delta (Barcelona, Spain) is affected by seawater intrusion processes since the 1960s. The Catalan Water Agency is currently promoting several actions of artificial aquifer recharge, including the construction of a positive hydraulic barrier in order to stop the advance of the seawater intrusion. Such a positive hydraulic barrier works by injecting reclaimed water in 14 wells. This is the first time that a project of this type is performed in Spain and i...

  7. Barcelona Traction at 40: the ICJ as an agent of legal development

    OpenAIRE

    Tams, C.; Tzanakopoulos, A.

    2010-01-01

    The article revisits the Barcelona Traction judgment of the International Court of Justice, rendered forty years ago. It evaluates the lasting influence of the Court's pronouncements on the nationality of corporations and on obligations erga omnes, and uses the case to illustrate the Court's role as an influential agent of legal development. In this respect, it identifies a number of factors that can help to explain under which circumstances judicial pronouncements are likely to shape the law.

  8. El debate arquitectónico en Barcelona en las postrimerías del franquismo

    Directory of Open Access Journals (Sweden)

    Antonio Pizza

    2012-10-01

    Full Text Available El artículo analiza el debate arquitectónico desarrollado en Barcelona en los últimos años de vigencia del régimen franquista, intentando evidenciar las posiciones defendidas por los diferentes protagonistas y sus relaciones con las cuestiones afrontadas en el panorama internacional. Asimismo, se tiene en cuenta que en este contexto cualquier reivindicación cultural se convertía inevitablemente en contestación de lo existente.

  9. de Barcelona: los cambios de la ciudad en la últimas tres décadas

    Directory of Open Access Journals (Sweden)

    J. A. Burriel Moreno

    2006-01-01

    Full Text Available Barcelona presenta una importante dinámica en su estructura urbana, con repercusiones en el medio ambiente. Para la gestión y la planificación a escala municipal se precisa saber cómo se estructura la ciudad y cómo cambia en el tiempo. En este trabajo se presenta el Mapa ecológico de Barcelona (MEB, que cuenta con tres ediciones y recoge casi tres décadas (1977- 2004 de cambios en la estructura de la ciudad. En él, se representan las zonas ecológicas que componen el sistema urbano, es decir, distintos tipos de zonas naturales, seminaturales, y urbanizadas. De la tercera edición, cabe destacar su alto nivel de resolución gracias a que las imágenes de base son ortofotos color con un píxel de 0.5 m, y que la leyenda jerárquica presenta, en su máximo detalle, 58 categorías. Los principales resultados de la comparación entre ediciones del MEB muestran el proceso de densificación urbana sufrido por Barcelona a costa de cultivos y solares sin edificar, agotando prácticamente el suelo libre del municipio, pero también la recuperación del bosque, y el importante aumento de zonas verdes.

  10. Prokaryotic homologs of Argonaute proteins are predicted to function as key components of a novel system of defense against mobile genetic elements

    Directory of Open Access Journals (Sweden)

    van der Oost John

    2009-08-01

    Full Text Available Abstract Background In eukaryotes, RNA interference (RNAi is a major mechanism of defense against viruses and transposable elements as well of regulating translation of endogenous mRNAs. The RNAi systems recognize the target RNA molecules via small guide RNAs that are completely or partially complementary to a region of the target. Key components of the RNAi systems are proteins of the Argonaute-PIWI family some of which function as slicers, the nucleases that cleave the target RNA that is base-paired to a guide RNA. Numerous prokaryotes possess the CRISPR-associated system (CASS of defense against phages and plasmids that is, in part, mechanistically analogous but not homologous to eukaryotic RNAi systems. Many prokaryotes also encode homologs of Argonaute-PIWI proteins but their functions remain unknown. Results We present a detailed analysis of Argonaute-PIWI protein sequences and the genomic neighborhoods of the respective genes in prokaryotes. Whereas eukaryotic Ago/PIWI proteins always contain PAZ (oligonucleotide binding and PIWI (active or inactivated nuclease domains, the prokaryotic Argonaute homologs (pAgos fall into two major groups in which the PAZ domain is either present or absent. The monophyly of each group is supported by a phylogenetic analysis of the conserved PIWI-domains. Almost all pAgos that lack a PAZ domain appear to be inactivated, and the respective genes are associated with a variety of predicted nucleases in putative operons. An additional, uncharacterized domain that is fused to various nucleases appears to be a unique signature of operons encoding the short (lacking PAZ pAgo form. By contrast, almost all PAZ-domain containing pAgos are predicted to be active nucleases. Some proteins of this group (e.g., that from Aquifex aeolicus have been experimentally shown to possess nuclease activity, and are not typically associated with genes for other (putative nucleases. Given these observations, the apparent extensive

  11. Reactor Physics

    Energy Technology Data Exchange (ETDEWEB)

    Ait Abderrahim, A

    2001-04-01

    The Reactor Physics and MYRRHA Department of SCK-CEN offers expertise in various areas of reactor physics, in particular in neutronics calculations, reactor dosimetry, reactor operation, reactor safety and control and non-destructive analysis of reactor fuel. This expertise is applied in the Department's own research projects in the VENUS critical facility, in the BR1 reactor and in the MYRRHA project (this project aims at designing a prototype Accelerator Driven System). Available expertise is also used in programmes external to the Department such as the reactor pressure steel vessel programme, the BR2 reactor dosimetry, and the preparation and interpretation of irradiation experiments by means of neutron and gamma calculations. The activities of the Fuzzy Logic and Intelligent Technologies in Nuclear Science programme cover several domains outside the department. Progress and achievements in these topical areas in 2000 are summarised.

  12. Reactor safeguards

    CERN Document Server

    Russell, Charles R

    2013-01-01

    Reactor Safeguards provides information for all who are interested in the subject of reactor safeguards. Much of the material is descriptive although some sections are written for the engineer or physicist directly concerned with hazards analysis or site selection problems. The book opens with an introductory chapter on radiation hazards, the construction of nuclear reactors, safety issues, and the operation of nuclear reactors. This is followed by separate chapters that discuss radioactive materials, reactor kinetics, control and safety systems, containment, safety features for water reactor

  13. Reactor operation

    CERN Document Server

    Shaw, J

    2013-01-01

    Reactor Operation covers the theoretical aspects and design information of nuclear reactors. This book is composed of nine chapters that also consider their control, calibration, and experimentation.The opening chapters present the general problems of reactor operation and the principles of reactor control and operation. The succeeding chapters deal with the instrumentation, start-up, pre-commissioning, and physical experiments of nuclear reactors. The remaining chapters are devoted to the control rod calibrations and temperature coefficient measurements in the reactor. These chapters also exp

  14. Factores relacionados con el acoso escolar (bullying en los adolescentes de Barcelona Factors related to bullying in adolescents in Barcelona (Spain

    Directory of Open Access Journals (Sweden)

    Xavier Garcia Continente

    2010-04-01

    Full Text Available Objetivos: La violencia y el acoso escolar constituyen un problema social y de salud que ha generado una gran alarma en los últimos años. En este estudio se describe el acoso escolar y los factores relacionados en estudiantes de Barcelona. Métodos: Estudio transversal de una muestra representativa de 2.727 estudiantes de 66 centros escolares de secundaria de Barcelona. Se definió «acoso escolar» como haber sido objeto de burla, golpeado o marginado cuatro o más veces, o al menos una vez en cada uno de los ítems, en los últimos 12 meses. Se realizó un análisis de regresión logística bivariado y multivariado para estudiar la relación entre el acoso y diversos factores, incluyendo variables sociodemográficas, actitudes y comportamientos. Resultados: La prevalencia de acoso escolar fue del 18,2%, 10,9% y 4,3% en chicos, y del 14,4%, 8,5% y 4,5% en chicas de 2º y 4º de educación secundaria obligatoria y 2º de bachillerato o ciclos formativos de grado medio, respectivamente. Los factores que se asociaron con un incremento de la probabilidad de padecer acoso fueron el estado de ánimo negativo y la conducta violenta, mientras que tener mayor edad, el consumo de riesgo de alcohol, el consumo de cannabis e ir a bares y discotecas se asociaron negativamente. Conclusiones: Los resultados confirman la relevancia del problema del acoso escolar en nuestro medio, y señalan diversos factores asociados, como el estado de ánimo negativo y varios comportamientos de riesgo, que deberían ser analizados con detalle en estudios longitudinales para diseñar e implementar programas preventivos apropiados.Objectives: Violence and bullying in the school setting are a serious social and health problem that have created great alarm in the last few years. We aimed to describe bullying and factors related to this phenomenon in students in the city of Barcelona. Methods: We performed a cross-sectional study of a representative sample of 2,727 students

  15. Innovar en la gestión de servicios de salud pública: la experiencia de la Agencia de Salud Pública de Barcelona Innovating the service management of public health: the experience of the Barcelona Public Health Agency (Spain)

    OpenAIRE

    Joan Guix; Joan Ramon Villalbí; Ricard Armengol; Xavier Llebaria; Rafael Manzanera; Antoni Plasència

    2008-01-01

    Se describe la evolución de la prestación de servicios de salud pública en la ciudad de Barcelona hasta la creación de la Agència de Salut Pública de Barcelona. La Agencia es un ente consorcial del Ayuntamiento de Barcelona y la Generalitat de Catalunya, como único gestor de las competencias locales y autonómicas en salud pública para la ciudad. Se analiza la lógica de su construcción, su definición de misión, visión y valores, estrategia y catálogo de servicios, así como el rol de la direcci...

  16. Capitalidad autonómica y proceso de terciarización: el caso de Barcelona

    Directory of Open Access Journals (Sweden)

    Alberich González, Joan

    2014-06-01

    Full Text Available Barcelona has been since many years ago the functional centre of a vast territory, beyond the strict scope of Catalonia. From this fact, the aim of the study is to determine whether the regional capital of Barcelona and the general process of tertiarisation, two phenomena almost contemporary, have reinforced its centrality and if they have done with greater intensity than in other cities from the Catalan urban system. In agreement with this, we have divided this work into two sections. The first one analyzes the evolution of jobs of Barcelona and the Catalan cities of over 50,000 inhabitants from the late 1980s and the first decade of the 21st century and their distribution by activity branches. The second part, as an example of this tertiarisation process, we analyze the functional change and valorisation of a Barcelona’s old obsolete industrial area for its renewal into an advanced tertiary sector use, known as district 22@.Barcelona es desde hace muchos años el centro funcional de un extenso territorio, que va más allá del ámbito estricto de Cataluña. A partir de esta realidad, el objetivo del trabajo es conocer si la capitalidad autonómica de Barcelona y el proceso general de terciarización, dos fenómenos casi contemporáneos, han reforzado su centralidad y si lo han hecho con mayor intensidad que en otras ciudades del sistema urbano catalán. De acuerdo con este planteamiento, hemos dividido este trabajo en dos apartados. El primero analiza la evolución de los puestos de trabajo y su distribución por ramas de actividad de Barcelona y las ciudades catalanas de más de 50.000 habitantes entre finales de la década de 1980 y la primera década del siglo XXI . La segunda parte, como un ejemplo de este proceso de terciarización, analiza el cambio funcional y la puesta en valor de un antiguo espacio industrial barcelonés en desuso, para su reconversión en uso del terciario avanzado, el llamado distrito 22@. [fr] Barcelone a

  17. Research reactors

    International Nuclear Information System (INIS)

    This article proposes an overview of research reactors, i.e. nuclear reactors of less than 100 MW. Generally, these reactors are used as neutron generators for basic research in matter sciences and for technological research as a support to power reactors. The author proposes an overview of the general design of research reactors in terms of core size, of number of fissions, of neutron flow, of neutron space distribution. He outlines that this design is a compromise between a compact enough core, a sufficient experiment volume, and high enough power densities without affecting neutron performance or its experimental use. The author evokes the safety framework (same regulations as for power reactors, more constraining measures after Fukushima, international bodies). He presents the main characteristics and operation of the two families which represent almost all research reactors; firstly, heavy water reactors (photos, drawings and figures illustrate different examples); and secondly light water moderated and cooled reactors with a distinction between open core pool reactors like Melusine and Triton, pool reactors with containment, experimental fast breeder reactors (Rapsodie, the Russian BOR 60, the Chinese CEFR). The author describes the main uses of research reactors: basic research, applied and technological research, safety tests, production of radio-isotopes for medicine and industry, analysis of elements present under the form of traces at very low concentrations, non destructive testing, doping of silicon mono-crystalline ingots. The author then discusses the relationship between research reactors and non proliferation, and finally evokes perspectives (decrease of the number of research reactors in the world, the Jules Horowitz project)

  18. Reactor physics and reactor computations

    International Nuclear Information System (INIS)

    Mathematical methods and computer calculations for nuclear and thermonuclear reactor kinetics, reactor physics, neutron transport theory, core lattice parameters, waste treatment by transmutation, breeding, nuclear and thermonuclear fuels are the main interests of the conference

  19. Patrimonios incómodos para la imagen que Barcelona ofrece al mundo

    OpenAIRE

    Reventós Gil de Biedma, Ana

    2007-01-01

    Barcelona is today a city of reference within the world’s tourist map. Created as a process of both an economic evolution towards the third sector as well as a powerful brand image, from the Olympics up to nowadays. Within this scene, Culture and Arts have been pushed at the center of the strategy, building a “cultural spectacle” aimed to differentiate the city’s offer in the market. Furthermore, some specific icons oriented to give it a Catalan, Cosmopolitan and Modern identity are promoted,...

  20. Assessing public leadership styles for innovation: A comparison of Copenhagen, Rotterdam and Barcelona

    DEFF Research Database (Denmark)

    Ricard, Lykke Margot; Klijn, Erik Hans; Lewis, Jenny M.;

    2016-01-01

    This article explores which leadership qualities public managers regard as important for public innovation. It is based on a survey of 365 senior public managers in Copenhagen, Rotterdam and Barcelona. Five perspectives on leadership were identified and tested using a number of items. Some...... of these proved to be more robust than others. Analysis of the three cities reveals a nuanced set of leadership styles, which include a transformational style, and one that is more dedicated to motivating employees, risk-taking and including others in decision-making. This suggests the need for more research...... on leadership and public-sector innovation....

  1. Bailando la diferencia : identidades culturales y música salsa en Barcelona

    OpenAIRE

    Llano Camacho, Isabel

    2015-01-01

    En el baile de la salsa hay muchos estilos. En Barcelona, el estilo cubano fue el primero en difundirse a inicios de 1990. Sin embargo, el estilo Los Ángeles comenzó a proliferar desde comienzos de 2000, a la vez que empezó a replicarse el modelo de los congresos de salsa a nivel mundial. La internacionalización del baile de la salsa coincidió con el boom de la inmigración latinoamericana en España, por lo que la emergencia de las primeras escuelas y compañías de baile de salsa dirigidas al p...

  2. Turisme i arquitectura en la Barcelona d'inicis del segle XX

    OpenAIRE

    Rosselló i Nicolau, Maribel; Valdivia Pardo, Pamela

    2009-01-01

    La comunicació que proposem estudia els diversos equipaments hotelers que es van posar en marxa en el període comprès entre les dues exposicions universals/internacionals (1888 i 1929). A inicis del segle XX, el turisme va jugar un paper fonamental com a motor de modernització de la ciutat de Barcelona, va ser un dels mecanismes per a fer de la ciutat una metròpoli i fou un argument –entre d’altres– per a revalorar el patrimoni arquitectònic de la ciutat, per endegar algunes trans...

  3. La cinematografía anarquista en Barcelona durante la Guerra Civil (1936-1939)

    OpenAIRE

    Martínez Muñoz, Pau

    2008-01-01

    La tesi doctoral tracta sobre la producció cinematogràfica realitzada pel moviment anarcosindicalista a Barcelona durant la Guerra Civil espanyola (1936-1939). Un corpus total de vuitanta tres títols, malgrat a l'actualitat només es conserven quaranta i quatre cintes i no totes complertes.La investigació està centrada en la recopilació i catalogació exhaustiva de tota la filmografia existent: reportatges de guerra, documentals de propaganda i pel·lícules de ficció. Se ha realitzat l'anàlisi d...

  4. Child exposure to indoor and outdoor air pollutants in schools in Barcelona, Spain.

    Science.gov (United States)

    Rivas, I; Viana, M; Moreno, T; Pandolfi, M; Amato, F; Reche, C; Bouso, L; Àlvarez-Pedrerol, M; Alastuey, A; Sunyer, J; Querol, X

    2014-08-01

    Proximity to road traffic involves higher health risks because of atmospheric pollutants. In addition to outdoor air, indoor air quality contributes to overall exposure. In the framework of the BREATHE study, indoor and outdoor air pollution was assessed in 39 schools in Barcelona. The study quantifies indoor and outdoor air quality during school hours of the BREATHE schools. High levels of fine particles (PM2.5), nitrogen dioxide (NO2), equivalent black carbon (EBC), ultrafine particle (UFP) number concentration and road traffic related trace metals were detected in school playgrounds and indoor environments. PM2.5 almost doubled (factor of 1.7) the usual urban background (UB) levels reported for Barcelona owing to high school-sourced PM2.5 contributions: [1] an indoor-generated source characterised mainly by organic carbon (OC) from organic textile fibres, cooking and other organic emissions, and by calcium and strontium (chalk dust) and; [2] mineral elements from sand-filled playgrounds, detected both indoors and outdoors. The levels of mineral elements are unusually high in PM2.5 because of the breakdown of mineral particles during playground activities. Moreover, anthropogenic PM components (such as OC and arsenic) are dry/wet deposited in this mineral matter. Therefore, PM2.5 cannot be considered a good tracer of traffic emissions in schools despite being influenced by them. On the other hand, outdoor NO2, EBC, UFP, and antimony appear to be good indicators of traffic emissions. The concentrations of NO2 are 1.2 times higher at schools than UB, suggesting the proximity of some schools to road traffic. Indoor levels of these traffic-sourced pollutants are very similar to those detected outdoors, indicating easy penetration of atmospheric pollutants. Spatial variation shows higher levels of EBC, NO2, UFP and, partially, PM2.5 in schools in the centre than in the outskirts of Barcelona, highlighting the influence of traffic emissions. Mean child exposure to

  5. Entrepreneurship and business survival in times of crisis: the case of Barcelona

    OpenAIRE

    Marian Buil Fabregá; Alfredo Rocafort Nicolau

    2016-01-01

    Objeto: El trabajo que se presenta en este artículo es la primera parte de un estudio sobre las estrategias llevadas a cabo por las empresas en épocas de crisis. Este primer artículo analiza las características financieras de las empresas creadas en Barcelona en los inicios de la crisis y que han sobrevivido durante la misma. Este estudio pretende contrastar las características financieras de las empresas analizadas con las medidas llevadas a cabo para mantener su rentabilidad ...

  6. Urbanització i planejament urbanístic: Barcelona, 1917-1936

    OpenAIRE

    Llobet i Llobet, Jaume

    1984-01-01

    El núcleo fundamental del trabajo es el análisis conjunto de las transformaciones en las formas de construcción urbana y el planeamiento urbanístico en un periodo histórico, significativo en tanto que relaciona la ciudad y la urbanística de principios de siglo XX con el arranque de la disciplina y la Barcelona modernas. El estudio de la urbanización -centrado en el ensanche y el extrarradio, como los espacios donde se reflejan mejor las características y tensiones en el crecimiento urbano de...

  7. Atraque discontinuo Nº2 en la explanada de inflamables del puerto de Barcelona

    OpenAIRE

    Peñín Martínez, David

    2013-01-01

    A lo largo de la historia, el Puerto de Barcelona ha seguido el mismo modelo en el crecimiento de sus infraestructuras, consistente en un incremento de la superficie portuaria mediante la formación de terminales portuarias en zonas de aguas abrigadas siendo éstas generadas mediante el desarrollo de grandes diques a lo largo de la costa. Las obras del presente proyecto tienen como fin la creación de la infraestructura necesaria para poder ubicar un nuevo atraque para buques que transporten...

  8. Implementació d'un tauler de dades web de la Ciutat de Barcelona

    OpenAIRE

    Dolz Fernández, Jose Luis

    2016-01-01

    En aquesta memòria es descriu la implementació d'un tauler de dades com una aplicació web amb informació sobre la ciutat de Barcelona. L'objectiu és aconseguir una eina amb una interfície gràfica agradable, senzilla i intuïtiva que pugui fer servir un ventall ampli d'usuaris. Per portar a terme aquest projecte s'ha fet servir el repositori obert de dades que l'ajuntament de la ciutat. Per tant, s'ha estudiat el format de les dades, els seus atributs i les seves relacions abans de seleccionar ...

  9. Reinventing the Rose of Fire: Anarchism and the Movements against Corporate Globalization in Barcelona

    Directory of Open Access Journals (Sweden)

    Jeffrey Juris

    2010-02-01

    Full Text Available This article explores the intersections between classic anarchist praxis and contemporary anti-corporate globalization activism in Barcelona. It engages in a sympathetic debate with two key literatures, pushing my argument in contrasting, yet ultimately related directions. I differ with accounts that emphasize an identity, arguing instead that anti-corporate globalizationmovements involve a confluence between anarchist principles and emerging networking logics associated with late capitalism. Given this affinity, anarchism is one among several related positions radicals adopt in particular contexts. Indeed, radical identities reflect a growing emphasis on multiplicity, openness, andflexibility. Attention to such specificities is important for analytical and strategic reasons.

  10. Activity size distributions for long-lived radon decay products in aerosols collected in Barcelona (Spain)

    International Nuclear Information System (INIS)

    The activity median aerodynamic diameters (AMADs) of long-lived radon decay product (210Pb, 210Po) in aerosols collected in the Barcelona area (Northeast Spain) during the period from April 2006 to February 2008 are presented. The 210Po mean AMAD was 420 nm, while the 210Pb mean AMAD was 500 nm. The temporal evolution of 210Pb and 210Po AMADs shows maxima in autumn and winter and minima in spring and summer. 210Pb AMAD are being used to estimate the mean-residence time of atmospheric aerosols.

  11. Los Food trucks en el espacio público de Barcelona : escenario actual y sus oportunidades

    OpenAIRE

    Burbano de Lara Pérez, Lorena

    2015-01-01

    El presente Trabajo de Fin de Master tiene por objetivo estudiar, desde un punto de vista un poco particular, los espacios públicos y las actividades sociales, culturales y comerciales, que se están desarrollando en los mismos, específicamente de la ciudad de Barcelona. Dicho estudio, se ha de realizar a través de un análisis del fenómeno de los Food Trucks y el Street Food que, durante los últimos dos años, ha tomado mucha fuerza y reconocimiento, siendo una alternativa comercial presente en...

  12. Análisis de la comunicación intercultural sobre la inmigración china en Barcelona

    OpenAIRE

    Huang, Xueting

    2015-01-01

    Análisis la comunicación intercultural de la migración china en Barcelona, construyendo un soporte teórico entre la migración y la comunicación. Se investigan las características de comunicación a través de las teorías. En el trabajo se presentarán principalmente cuatros aspectos para investigar el fenómeno social de que los chinos que emigran a Barcelona. En primer lugar, se lleva a cabo un análisis de la asimetría y el cambio sobre el intercambio cultural entre China y Barcelona. En segundo...

  13. Els usos lingüístics dels nens japonesos i nipocatalans/nipocastellans escolaritzats a Catalunya. El cas dels alumnes del Col·legi Japonès de Barcelona i de l'Escola Complementària de Llengua Japonesa de Barcelona

    OpenAIRE

    Fukuda, Makiko

    2009-01-01

    The paper presents patterns of language use of the schoolchildren who attend one of the two japanese educational establishments in Barcelona: the Japanese School of Barcelona and the Supplementary Japanese School of Barcelona. Based on the data from a small-scale pilot study, patterns of language use of the children in the communication with their parents, their siblings, and their friends are analyzed. Their language preference in the communication media are also presented. The language use ...

  14. The challenge of improving urban air quality: effects of hybrid cars, introduction in Barcelona and Madrid (Spain)

    OpenAIRE

    Gonçalves Ageitos, María; Jiménez Guerrero, Pedro; Baldasano Recio, José María

    2011-01-01

    WRF-ARW/HERMES/CMAQ modelling system is applied with high resolution (1 km2, 1 h) to assess changes in Madrid and Barcelona (Spain) air quality due to hybrid cars introduction. The substitution of the oldest cars by hybrids is effective to reduce NO2 and PM2.5 levels in the conurbations (up to 35%/12% in Madrid downtown, when 30% of cars are changed). In VOC-limited areas, as Barcelona, the NOx emissions abatement locally increases tropospheric ozone concentration. Downwind,...

  15. Los planes de seguimiento en los parques naturales gestionados por la Diputación de Barcelona

    OpenAIRE

    Bombí Arnau, Antoni; Castell Puig, Carles; Guinart Sureda, Daniel; Llacuna Claramunt, Santiago; Miño Salinas, Àngel

    2002-01-01

    El Área de Espacios Naturales de la Diputación de Barcelona gestiona una docena de este tipo de espacios ubicados en el entorno de la región metropolitana de Barcelona, con una superficie protegida de más de cien mil hectáreas. Es necesario un exhaustivo conocimiento de los principales componentes de los sistemas naturales, así como de los procesos y dinámicas que están siguiendo, para poder evaluar adecuadamente la planificación y la gestión de acuerdo con los objetivos de conservac...

  16. The life-cycle of Barcelona and Madrid book-publishing districts in the 20th century

    OpenAIRE

    Jordi Catalan; Guillermo Gil-Mugarza

    2013-01-01

    Spain ranks among the world?s top five countries as far as value of book exports is concerned. One of the features of this industry is that, at the beginning of the century, the Spanish book publishing sector as a whole was considered backward by those who knew the sector firsthand. Another one is that book production is largely concentrated in two towns: Barcelona and Madrid. The book-publishing industries of Barcelona and Madrid during the 20th century had similar sizes and shared the three...

  17. El Barrio Gótico de Barcelona. Planificación del pasado e imagen de marca

    OpenAIRE

    Cócola Gant, Agustin

    2010-01-01

    El Barrio Gótico de Barcelona fue construido en las décadas centrales del siglo XX. De hecho, su nombre también es una creación moderna, ya que tradicionalmente el espacio era conocido como barrio de la Catedral. Aunque en teoría los monumentos históricos nos remiten a épocas pasadas, en muchos casos han sido fabricados recientemente, tanto en su forma como en su función social. La medievalización del centro histórico de Barcelona transformó físicamente el barrio institucional de la ciudad, d...

  18. Quantification of thermal bioclimate for the management of urban design in Mediterranean climate of Barcelona, Spain

    Science.gov (United States)

    Rodríguez Algeciras, José Abel; Matzarakis, Andreas

    2016-08-01

    In order to contribute to the sustainability of the outdoor environment, knowledge about the urban thermal bioclimate should be transferred into climatic guidelines for planning. The general framework of this study responds to the need of analyzing thermal bioclimate in Mediterranean climate regions and its influence as an urban design factor. The paper analyzes the background of the urban climate and thermal bioclimate conditions in Barcelona (Spain), through the effect of shade conditions and wind speed variations. Simulations of shade and wind speed variations were performed to evaluate changes in thermal bioclimate due to modifications in urban morphology. Air temperature, relative humidity, wind speed, and solar radiation for the period from January, 2001 to January, 2015 were used to calculate physiologically equivalent temperature (PET) using the RayMan model. The results demonstrate that shade is the most important strategy to improve urban microclimatic conditions. In Barcelona, human thermal comfort conditions can be improved by shade and wind speed increase in terms of PET above 23 °C and by a wind speed decrease for thresholds of PET below 18 °C. Heat stress situations can be mitigated by shade and wind speed increase in conditions above 35 and 45 °C, respectively. The results of the study are an important contribution for urban planners, due to their possibilities and potential for the description of microclimatic conditions in Mediterranean climate regions. The knowledge is useful for improved human thermal comfort conditions, from the suitable configuration of urban form and architecture.

  19. Indoor and outdoor BTX levels in Barcelona City metropolitan area and Catalan rural areas

    Institute of Scientific and Technical Information of China (English)

    E. Gallego; F. X. Roca; X. Guardino; M. G. Rosell

    2008-01-01

    Five aromatic hydrocarbons (benzene, toluene, and three isomeric xylenes) were monitored in indoor and outdoor air of 7 public buildings and 54 private homes, located in Barcelona City metropolitan area and in several rural areas of Catalonia. The sampling was carried out over four periods: spring-summer and winter of 2000, and summer and winter of 2001. Passive ORSA 5 Draiger samplers were used for benzene, toluene, and xylenes (BTX) adsorption. BTX were extracted with carbon disulphide and analysed using a gas chromatograph coupled to a FID detector. In Barcelona metropolitan area the outdoor average concentrations of BTX were 3.5, 34.2, and 31.3 μg/m3 in urban areas, and 1.4, 9.2, and 9.2 μg/m3 in rural areas, respectively. Average indoor air concentrations of BTX were respectively 4.3, 64.8, and 47.6 μg/m3 in urban areas and 5.8, 67.0, and 51.4 μg/m3 in rural areas, respectively. A direct connection between the house and garage was one of the most influential factors for indoor BTX concentrations in rural areas. In urban areas, diffuse traffic sources were the predominant BTX source, slightly influenced by tobacco smoke in indoor air.

  20. Service-Learning in Physical Education Teacher Training. Physical Education in the Modelo Prison, Barcelona

    Directory of Open Access Journals (Sweden)

    Teresa Lleixà

    2015-06-01

    Full Text Available In the Psychiatric Unit of the Modelo Prison, Barcelona, a physical education programme is carried out annually with the participation of University of Barcelona (UB students. In this context, we carried out a study based on service-learning parameters. The aim of the study was twofold: to determine the impact on inmates of the physical education programme that was undertaken with university students; and to assess what university students’ learnt in the prison-based socio-educational intervention programme. This paper describes the context of the research and the methodological basis of service learning. The qualitative tools to gather the information were: two focus group; a semi-structured interview with a representative of the unit’s guards; and the students’ field dairy. We present results that demonstrate the impact of the physical, sports activity on the socialisation of inmates, in terms of aspects such as communication and personal skills. The results also show the effect of the programme on the university students’ learning processes, particularly with regard to the contextualisation of learning.

  1. [Thirty Years of Health Surveillance of Foods in Barcelona: The "ICSA" Food Quality Research Program].

    Science.gov (United States)

    Fontcuberta-Famadas, Mireia; Rodellar-Torras, Santiago; Portaña-Tudela, Samuel; Durán-Neira, Julia

    2015-01-01

    The Food Health Quality Research Program (Investigación de la Calidad Sanitaria de los Alimentos [ICSA]) of the Public Health Agency of Barcelona (Agencia de Salud Pública de Barcelona [ASPB]) was initiated in 1984 to carry out surveillance of certain chemical and microbiological parameters related to the sanitary and safety of foods sold in the city. The present article analyzes the importance of health surveillance and provides details of the uses of the ICSA program. The main aim of this program is to evaluate whether marketed foods comply with the absence and/or established tolerance levels of specific parameters. Nevertheless, the program is able to incorporate or suppress parameters or foods that pose emerging dangers or interests not represented in current legislation. Besides, the program not only obtains a view of the parameters studied at a specific time period in each report, but also accumulates data over time, allowing risk assessment, calculation of dietary intake of contaminants, analysis of tendencies, and evaluation of the effectiveness of regulations to reduce contaminants. The program can also help in the planning of food control programs. The information obtained is disseminated nationally and internationally and is included in dossiers of contaminants issued by national and European health agencies. This demonstrates that a locally-developed surveillance system can have a wider scope and broader objectives and can provide useful information for managers, administrations, economic operators and consumers. PMID:26388339

  2. Modeling of photochemical air pollution in the Barcelona area with highly disaggregated anthropogenic and biogenic emissions

    International Nuclear Information System (INIS)

    The city of Barcelona and its surrounding area, located in the western Mediterranean basin, can reach high levels of O3 in spring and summertime. To study the origin of this photochemical pollution, a numerical modeling approach was adopted and the episode that took place between 3 and 5 August 1990 was chosen. The main meteorological mesoscale flows were reproduced with the meteorological non-hydrostatic mesoscale model MEMO for 5 August 1990, when weak pressure synoptic conditions took place. The emissions inventory was calculated with the EIM-LEM model, giving highly disaggregated anthropogenic and biogenic emissions in the zone studied, an 80 x 80 km2 area around the city of Barcelona. Major sources of VOC were road traffic (51%) and vegetation (34%), while NOx were mostly emitted by road traffic (88%). However, emissions from some industrial stacks can be locally important and higher than those from road traffic. Photochemical simulation with the MARS model revealed that the combination of mesoscale wind flows and the above-mentioned local emissions is crucial in the production and transport of O3 in the area. On the other hand, the geostrophic wind also played an important role in advecting the air masses away from the places O3 had been generated. The model simulations were also evaluated by comparing meteorological measurements from nine surface stations and concentration measurements from five surface stations, and the results proved to be fairly satisfactory. (author)

  3. STUDY REGARDING THE MEN'S 50M FREESTYLE AT THE 2013 BARCELONA WORLD SWIMMING CHAMPIONSHIP

    Directory of Open Access Journals (Sweden)

    Galeru Ovidiu

    2014-03-01

    Full Text Available The 2013 Barcelona World Swimming Championships have confirmed once again the conclusion of various specialists and statistics that the results recorded at the World Championships following the Summer Olympic Games are more valuable from a performance standpoint. The men's 50m and 100m freestyle events attract the most attention, being considered the most disputed, being the most watched events by the specialists, by the media, and by a larger audience. The chances of each athlete aspiring to the top title are analyzed, their competition strategies, but also the statements of the most valuable swimmers. The pertinent analyses of the races, especially during the late stages of the competition, semifinals and final, represent extremely important sources of information for coaches and researchers, offering data and specific indices that can improve the athletes' future performances, or can predict certain performances. In this study I aim to analyze the men's 50m freestyle final at the 2013 Barcelona World Swimming Championships, and to compare the results with the ones recorded by the athlete I am currently coaching, the Romanian swimmer Norbert Trandafir, an athlete who was qualified in the semifinals for this event, but came out in 13th position in the final, with a new national record (21.98 s, a time that can mean a qualification in the European, World, and why not, even Olympics finals.

  4. Sowing Resilience and Contestation in Times of Crises: The Case of Urban Gardening Movements in Barcelona

    Directory of Open Access Journals (Sweden)

    Marta Camps-Calvet

    2015-07-01

    Full Text Available Urban gardens have been observed to multiply in response to crises. However, the meaning and motivations behind the emergence of gardening movements varies greatly over space and time. In this paper we argue that bottom up urban gardening initiatives taking place in Southern European countries in form of land occupation and communalization represent forms of resistance that enhance social cohesion and collective action in times of need. Specifically, this research examines the role of urban gardens in (i building community resilience and (ii articulating forms of resistance and contestation to development pressure and commodified urban lifestyles. Our research is based on data collected among 27 urban gardening initiatives in Barcelona, Spain, including 13 self-governed community gardens and 14 public gardens. Data were collected from semi-structured interviews with gardeners and with staff from the Barcelona City Council. Our results show mechanisms through which urban gardens can contribute to build resilience by nurturing social and ecological diversity, generating and transmitting local ecological knowledge, and by creating opportunities for collective action and self-organization. We further examine collectively managed gardens as urban commons that emerge as a form of resistance to the privatization of public urban space, and that offer opportunities to experiment with new models of urban lifestyles. We show how gardening initiatives can be seen to represent an emerging form of urban green commons that provides a suitable ground to ‘sow’ resilience and contestation in times of crises and socio-ecological deterioration.

  5. Spain’s Mediterranean Policy: between the Barcelona Process and the European Neighbourhood Policy

    Directory of Open Access Journals (Sweden)

    Esther Barbé Izuel

    2007-12-01

    Full Text Available This article analyses the evolution of Spain’s position with respect to the two main cooperation initiatives in the Mediterranean space: the Barcelona Process and the European Neighbourhood Policy. Firstly, it shows Spain’s role as a driving force, both in the launchingof the Euro-Mediterranean Partnership in 1995 and in the impetus provided 10 years later by the holding of the extraordinary Euro-Mediterranean Summit. Secondly, the article examines the progressive adaptation of Spain’s discourse towards the European Neighbourhood Policy, trying to maximise Spain’s preferences with respect to its neighbours without this endangering the survival of the Barcelona Process. Finally, the authors identify some of the proposals recently set forth for Euro-Mediterranean cooperation, such as the Advanced Statute for Morocco and the French proposal of the Mediterranean Union. In the light of these possible future scenarios,Spanish diplomacy must guarantee its influence within the EU’s Mediterranean policy.

  6. [Thirty Years of Health Surveillance of Foods in Barcelona: The "ICSA" Food Quality Research Program].

    Science.gov (United States)

    Fontcuberta-Famadas, Mireia; Rodellar-Torras, Santiago; Portaña-Tudela, Samuel; Durán-Neira, Julia

    2015-01-01

    The Food Health Quality Research Program (Investigación de la Calidad Sanitaria de los Alimentos [ICSA]) of the Public Health Agency of Barcelona (Agencia de Salud Pública de Barcelona [ASPB]) was initiated in 1984 to carry out surveillance of certain chemical and microbiological parameters related to the sanitary and safety of foods sold in the city. The present article analyzes the importance of health surveillance and provides details of the uses of the ICSA program. The main aim of this program is to evaluate whether marketed foods comply with the absence and/or established tolerance levels of specific parameters. Nevertheless, the program is able to incorporate or suppress parameters or foods that pose emerging dangers or interests not represented in current legislation. Besides, the program not only obtains a view of the parameters studied at a specific time period in each report, but also accumulates data over time, allowing risk assessment, calculation of dietary intake of contaminants, analysis of tendencies, and evaluation of the effectiveness of regulations to reduce contaminants. The program can also help in the planning of food control programs. The information obtained is disseminated nationally and internationally and is included in dossiers of contaminants issued by national and European health agencies. This demonstrates that a locally-developed surveillance system can have a wider scope and broader objectives and can provide useful information for managers, administrations, economic operators and consumers.

  7. Quantification of thermal bioclimate for the management of urban design in Mediterranean climate of Barcelona, Spain

    Science.gov (United States)

    Rodríguez Algeciras, José Abel; Matzarakis, Andreas

    2015-12-01

    In order to contribute to the sustainability of the outdoor environment, knowledge about the urban thermal bioclimate should be transferred into climatic guidelines for planning. The general framework of this study responds to the need of analyzing thermal bioclimate in Mediterranean climate regions and its influence as an urban design factor. The paper analyzes the background of the urban climate and thermal bioclimate conditions in Barcelona (Spain), through the effect of shade conditions and wind speed variations. Simulations of shade and wind speed variations were performed to evaluate changes in thermal bioclimate due to modifications in urban morphology. Air temperature, relative humidity, wind speed, and solar radiation for the period from January, 2001 to January, 2015 were used to calculate physiologically equivalent temperature (PET) using the RayMan model. The results demonstrate that shade is the most important strategy to improve urban microclimatic conditions. In Barcelona, human thermal comfort conditions can be improved by shade and wind speed increase in terms of PET above 23 °C and by a wind speed decrease for thresholds of PET below 18 °C. Heat stress situations can be mitigated by shade and wind speed increase in conditions above 35 and 45 °C, respectively. The results of the study are an important contribution for urban planners, due to their possibilities and potential for the description of microclimatic conditions in Mediterranean climate regions. The knowledge is useful for improved human thermal comfort conditions, from the suitable configuration of urban form and architecture.

  8. Gobernanza Urbana y Participación Comunitaria. Los Casos de Barcelona, Bilbao y Pamplona (Urban Governance and Community Involvement. Cases of Barcelona, Bilbao and Pamplona

    Directory of Open Access Journals (Sweden)

    Imanol Telleria

    2015-12-01

    Full Text Available This article is based on a detailed study of three cases (Barcelona, ​​Pamplona and Bilbao trying to address from a theoretical perspective a more current characterization of urban movements, joining in a framework of analysis the contributions of the American and European schools study of social movements. To do this, we present the results of empirical research conducted in the districts of the three cities and perform a comparison of the most important variables. This research shows that urban movements have become increasing their ability to access aided by the opening of opportunities on local governance (EOP and have driven participatory processes articulated from a communitarian methodology (repertoires, intended to promote democratic management of the city (speech from reticular logic (organization oriented at re-structuring of society, as a prelude to increasing its influence on urban policies. Este artículo se basa en un estudio en profundidad de tres casos (Barcelona, Pamplona y Bilbao tratando de abordar desde una perspectiva teórica una caracterización más actual de los movimientos urbanos, aunando en un marco de análisis los aportes de las escuelas americana y europea de estudio de los movimientos sociales. Para ello, presentamos los resultados de la investigación empírica realizada en los barrios de las tres ciudades y realizamos una comparativa de las variables más importantes. Este estudio demuestra que los movimientos urbanos se han transformado aumentando su capacidad de acceso ayudados por  la apertura de oportunidades provocada por la gobernanza local (EOP y han impulsado procesos participativos que, articulados desde la metodología comunitaria (repertorios, pretenden provocar un impulso de la gestión democrática de la ciudad (discurso a partir de lógicas reticulares (organización orientadas a la re-vertebración de la sociedad, como paso previo al aumento de su  influencia sobre las políticas urbanas

  9. Reactor building

    International Nuclear Information System (INIS)

    The whole reactor building is accommodated in a shaft and is sealed level with the earth's surface by a building ceiling, which provides protection against penetration due to external effects. The building ceiling is supported on walls of the reactor building, which line the shaft and transfer the vertical components of forces to the foundations. The thickness of the walls is designed to withstand horizontal pressure waves in the floor. The building ceiling has an opening above the reactor, which must be closed by cover plates. Operating equipment for the reactor can be situated above the building ceiling. (orig./HP)

  10. Crystal structure of A. aeolicus argonaute, a site-specific DNA-guided endoribonuclease, provides insights into RISC-mediated mRNA cleavage

    Energy Technology Data Exchange (ETDEWEB)

    Yuan,Y.; Pei, Y.; Ma, J.; Kuryavyi, V.; Zhadina, M.; Meister, G.; Chen, H.; Dauter, Z.; Tuschi, T.; Patel, D.

    2005-01-01

    Argonaute (Ago) proteins constitute a key component of the RNA-induced silencing complex (RISC). We report the crystal structure of Aquifex aeolicus Ago (Aa-Ago) together with binding and cleavage studies, which establish this eubacterial Ago as a bona fide guide DNA strand-mediated site-specific RNA endonuclease. We have generated a stereochemically robust model of the complex, where the guide DNA-mRNA duplex is positioned within a basic channel spanning the bilobal interface, such that the 5' phosphate of the guide strand can be anchored in a basic pocket, and the mRNA can be positioned for site-specific cleavage by RNase H-type divalent cation-coordinated catalytic Asp residues of the PIWI domain. Domain swap experiments involving chimeras of human Ago (hAgo1) and cleavage-competent hAgo2 reinforce the role of the PIWI domain in 'slicer' activity. We propose a four-step Ago-mediated catalytic cleavage cycle model, which provides distinct perspectives into the mechanism of guide strand-mediated mRNA cleavage within the RISC.

  11. A new loss-of-function allele 28y reveals a role of ARGONAUTE1 in limiting asymmetric division of stomatal lineage ground cell

    Institute of Scientific and Technical Information of China (English)

    Kezhen Yangy; Min Jiangy; Jie Le

    2014-01-01

    In Arabidopsis thaliana L., stomata are produced through a series of divisions including asymmetric and symmetric divisions. Asymmetric entry division of meristemoid mother cellproduces two daughter cells, the smal er meristemoid and the larger sister cell, a stomatal lineage ground cell(SLGC). Stomatal lineage ground cells can differentiate into epidermal pavement cells but have the potential to divide asymmetrical y, spacing divisions, to create satel ite meristemoids. Peptide ligands and TOO MANY MOUTHS (TMM) and ERECTA family receptors regulate the initiation of stomatal lineages, activity, and orientation of spacing divisions. Here, we reported that a natural mutant 28y displayed an increased stomatal density and index. Using map-based cloning, we identified mutation in ARGONAUTE1 (AGO1) as the cause of 28y phenotypes. Time-lapse tracing of stomatal lineage cells reveals that stomatal overproduction in 28y is caused by the excessive asymmetric spacing division of SLGCs.Further genetic results demonstrated that AGO1 acts down-stream of TMM and negatively regulates the SPCH transcripts, but in a brassinosteroid-independent manner. Upregulation of AGAMOUS-LIKE16 (AGL16) in 28y mutants suggests that AGO1 is required to restrict AGL16-mediated stomatal spacing divisions, an miRNA pathway in addition to ligand-receptor signaling modules.

  12. Markov State Models Reveal a Two-Step Mechanism of miRNA Loading into the Human Argonaute Protein: Selective Binding followed by Structural Re-arrangement

    KAUST Repository

    Jiang, Hanlun

    2015-07-16

    Argonaute (Ago) proteins and microRNAs (miRNAs) are central components in RNA interference, which is a key cellular mechanism for sequence-specific gene silencing. Despite intensive studies, molecular mechanisms of how Ago recognizes miRNA remain largely elusive. In this study, we propose a two-step mechanism for this molecular recognition: selective binding followed by structural re-arrangement. Our model is based on the results of a combination of Markov State Models (MSMs), large-scale protein-RNA docking, and molecular dynamics (MD) simulations. Using MSMs, we identify an open state of apo human Ago-2 in fast equilibrium with partially open and closed states. Conformations in this open state are distinguished by their largely exposed binding grooves that can geometrically accommodate miRNA as indicated in our protein-RNA docking studies. miRNA may then selectively bind to these open conformations. Upon the initial binding, the complex may perform further structural re-arrangement as shown in our MD simulations and eventually reach the stable binary complex structure. Our results provide novel insights in Ago-miRNA recognition mechanisms and our methodology holds great potential to be widely applied in the studies of other important molecular recognition systems.

  13. A Flexible Domain-Domain Hinge Promotes an Induced-fit Dominant Mechanism for the Loading of Guide-DNA into Argonaute Protein in Thermus thermophilus

    KAUST Repository

    Zhu, Lizhe

    2016-02-24

    Argonaute proteins (Ago) are core components of the RNA Induced Silencing Complex (RISC) that load and utilize small guide nucleic acids to silence mRNAs or cleave foreign DNAs. Despite the essential role of Ago in gene regulation and defense against virus, the molecular mechanism of guide-strand loading into Ago remains unclear. We explore such a mechanism in the bacterium Thermus thermophilus Ago (TtAgo), via a computational approach combining molecular dynamics, bias-exchange metadynamics, and protein-DNA docking. We show that apo TtAgo adopts multiple closed states that are unable to accommodate guide-DNA. Conformations able to accommodate the guide are beyond the reach of thermal fluctuations from the closed states. These results suggest an induced-fit dominant mechanism for guide-strand loading in TtAgo, drastically different from the two-step mechanism for human Ago 2 (hAgo2) identified in our previous study. Such a difference between TtAgo and hAgo2 is found to mainly originate from the distinct rigidity of their L1-PAZ hinge. Further comparison among known Ago structures from various species indicates that the L1-PAZ hinge may be flexible in general for prokaryotic Agos but rigid for eukaryotic Agos. © 2016 American Chemical Society.

  14. Salt Stress Reveals a New Role for ARGONAUTE1 in miRNA Biogenesis at the Transcriptional and Posttranscriptional Levels1[OPEN

    Science.gov (United States)

    Niedojadlo, Katarzyna; Niedojadlo, Janusz; Walczak, Weronika; Szweykowska-Kulinska, Zofia; Jarmolowski, Artur

    2016-01-01

    Plants as sessile organisms have developed prompt response mechanisms to react to rapid environmental changes. In addition to the transcriptional regulation of gene expression, microRNAs (miRNAs) are key posttranscriptional regulators of the plant stress response. We show here that the expression levels of many miRNAs were regulated under salt stress conditions. This regulation occurred at the transcriptional and posttranscriptional levels. During salinity stress, the levels of miRNA161 and miRNA173 increased, while the expression of pri-miRNA161 and pri-miRNA173 was down-regulated. Under salt stress conditions, miRNA161 and miRNA173 were stabilized in the cytoplasm, and the expressions of MIR161 and MIR173 were negatively regulated in the nucleus. ARGONAUTE1 (AGO1) participated in both processes. We demonstrated that AGO1 cotranscriptionally controlled the expression of MIR161 and MIR173 in the nucleus. Our results suggests that AGO1 interacts with chromatin at MIR161 and MIR173 loci and causes the disassembly of the transcriptional complex, releasing short and unpolyadenylated transcripts. PMID:27385819

  15. No cardiac damage after endurance exercise in cardiologists cycling to the European Society of Cardiology meeting in Barcelona

    NARCIS (Netherlands)

    Appelman, Yolande; van der Borgh, Roger; van Dantzig, Jan Melle; Mosterd, Arend; Daniels, Marcel; Doevendans, Pieter A.

    2015-01-01

    Aims There are variable results reported for athletes and potential cardiac damage during exercise. In 2009 a group of cardiologists went by bicycle from the Netherlands to the European Society of Cardiology meeting in Barcelona and collected functional and biochemical parameters during this trip in

  16. Defectos en soldaduras de estructura metálica. Aplicación a una obra en Barcelona

    OpenAIRE

    Pérez Vergara, Francisco

    2009-01-01

    Estudio de los defectos y aceptación de los mismos, en las uniones soldadas de una estructura metálica importante de una obra singular en Barcelona. Análisis de los ensayos destructivos y no destructivos de Aceptación de las soldaduras.

  17. Ensenyar la ciutat o aprendre de la ciutat : l'exemple de Barcelona

    Directory of Open Access Journals (Sweden)

    Mercè Tatjer

    2002-01-01

    Full Text Available L’article mostra, a través de l’exemple de Barcelona, com la ciutat s’ha anat consolidant en el decurs del segle XX com un instrument bàsic per a l’aprenentatge de les ciències socials en els diferents nivells educatius. En aquest sentit destaca —després d’un breu anàlisi dels precedents històrics en l’ensenyament de la ciutat— les primeres experiències didàctiques desenvolupades en la dècada de 1930 amb els importants moviments de renovació pedagògica. També s’estudien els factors específics que, en el cas barceloní, han possibilitat en els darrers vint-i-cinc anys l’eclosió de materials didàctics sobre la ciutat, com ara l’important protagonisme del professorat en coincidència amb els nous plantejaments de les disciplines referents, el despertar d’una consciència ciutadana, el suport dels professionals dedicats a la ciutat i les iniciatives desenvolupades per l’Ajuntament de Barcelona. D’ara endavant s’obre el nou repte d’inserir amb més claredat aquesta eina educativa que és la ciutat en el currículum escolar, a partir del suport de les noves tecnologies i amb estreta connexió amb les disciplines referents com la Geografia, la Història i la resta de Ciències Socials.Using Barcelona as an example, this article shows how, throughout the twentieth, century cities have become a basic tool in the learning process of social sciences at all education levels. In this sense, —after a brief analysis of teaching historical precedents in this city— the first didactical experiences developed in the 1930s, in which the movement of pedagogical renovation took place, stand out. Besides, the authors also analyze the specific factors that, in the case of Barcelona, have permitted the appearance of didactical material about the city during the last 25 years, such as the important role of teaching staff in relation to the new approaches of the referent areas, the wakening of a citizen conscience, the

  18. Implementation of CGPS at Estartit, Ibiza and Barcelona harbours for sea level monitoring

    Science.gov (United States)

    Martinez-Benjamin, J. J.; Ortiz Castellon, M.; Martinez-Garcia, M.; Perez, B.; Bosch, E.; Termens, A.; Martinez de Oses, X.

    2009-12-01

    The determination of global and regional mean sea level variations with accura-cies better than 1 mm/yr is a critical problem, the resolution of which is central to the current debate on climate change and its impact on the environment. Highly accurate time series from both satellite altimetry and tide gauges are needed. Measuring the sea surface height with in-situ tide gauges and GPS receivers pro-vides an efficient way to control the long term stability of the radar altimeters and other applications as the vertical land motion and studies of sea level change. L’Estartit tide gauge is a classical floating tide gauge set up in l’Estartit harbour (NE Spain) in 1990. Data are taken in graphics registers from which each two hours the mean value is recorded in an electronic support and delivered to the Permanent Service for Mean Sea level (PSMSL). Periodic surveying campaigns along the year are carried out for monitoring possible vertical movement of the geodetic benchmark adjacent to the tide gauge. Puertos del Estado (Spanish Harbours) installed the tide gauge station at Ibiza har-bour in January 2003 and a near GPS reference station. The station belongs to the REDMAR network, composed at this moment by 21 stations distributed along the whole Spanish waters, including also the Canary islands (http://www.puertos.es). The tide gauge also belongs to the ESEAS (European Sea Level) network. A description of the actual infrastructure at Ibiza, Barcelona and l’Estartit har-bours is presented.The main objective is the implementation of these harbours as a precise geodetic areas for sea level monitoring and altimeter calibration. Actually is a CGPS with a radar tide gauge from Puertos del Estado and a GPS belonging to Puerto de Barcelona. A precise levelling has been made by the Cartographic Insti-tute of Catalonia, ICC. The instrumentation of sea level measurements has been improved by providing the Barcelona site with a radar tide gauge Datamar 3000C device and a

  19. A management system for accidental water pollution risk in a harbour: The Barcelona case study

    Science.gov (United States)

    Grifoll, Manel; Jordà, Gabriel; Espino, Manuel; Romo, Javier; García-Sotillo, Marcos

    2011-10-01

    Water quality degradation in harbour domains can have an important negative impact from an economic, touristic and environmental point of view. In that sense, water quality management is becoming a main concern for harbour managers. In this paper, we present the research behind the initiative started in Spanish harbours to control water quality degradation due to accidental pollution. This management system is already operationally running in the Barcelona harbour (NW Mediterranean Sea). The system is based on a recent published risk assessment, which takes into account not only the different activities in the harbour and their inherent risk of accident but also the physical behaviour of harbour waters. In this methodology, a key element is to get hydrodynamic forecasts. Thus, the system is composed of a hierarchy of nested hydrodynamic models covering from the basin scale to the harbour scale and a module that computes the different parameters needed for risk assessment. Special emphasis is made on describing the steps followed for system implementation because such implementation is far from a mere technical problem. The first step is to identify the main forcing factors for the harbour hydrodynamics from both field data and numerical experiments, which has never been done before for the Barcelona harbour. Wind and shelf currents are suggested as the main forcing factors for the harbour circulation. The second step is to identify the requirements that a numerical model must fulfil in order to properly solve the Barcelona harbour's hydrodynamics. A high resolution (< 50 m) three dimensional model able to prognostically calculate temperature and salinity evolution; full air-sea coupling is needed as well. The third step is to investigate the best operational strategy. We have found that small errors in the initial density profiles are acceptable for surface current forecasts but not for deep circulation. A cold start must be avoided and a 72 h spin-up is

  20. On the spatial distribution and evolution of ultrafine particles in Barcelona

    Directory of Open Access Journals (Sweden)

    M. Dall'Osto

    2013-01-01

    Full Text Available Sources and evolution of ultrafine particles were investigated both horizontally and vertically in the large urban agglomerate of Barcelona, Spain. Within the SAPUSS project (Solving Aerosol Problems by Using Synergistic Strategies, a large number of instruments was deployed simultaneously at different monitoring sites (road, two urban background, regional background, urban tower 150 m a.s.l., urban background tower site 80 m a.s.l. during a 4 week period in September–October 2010. Particle number concentrations (N>5 nm are highly correlated with black carbon (BC at all sites only under strong vehicular traffic influences. By contrast, under cleaner atmospheric conditions (low condensation sink, CS such correlation diverges towards much higher N/BC ratios at all sites, indicating additional sources of particles including secondary production of freshly nucleated particles. Size-resolved aerosol distributions (N10–500 as well as particle number concentrations (N>5 nm allow us to identify three types of nucleation and growth events: (1 a regional type event originating in the whole study region and impacting almost simultaneously the urban city of Barcelona and the surrounding urban background area; (2 a regional type event impacting only the regional background area but not the urban agglomerate; (3 an urban type event which originates only within the city centre but whose growth continues while transported away from the city to the regional background. Furthermore, during these clean air days, higher N are found at tower level than at ground level only in the city centre whereas such a difference is not so pronounced at the remote urban background tower. In other words, this study suggests that the column of air above the city ground level possesses the optimal combination between low CS and high vapour source, hence enhancing the concentrations of freshly nucleated

  1. On the spatial distribution and evolution of ultrafine particles in Barcelona

    Science.gov (United States)

    Dall'Osto, M.; Querol, X.; Alastuey, A.; O'Dowd, C.; Harrison, R. M.; Wenger, J.; Gómez-Moreno, F. J.

    2013-01-01

    Sources and evolution of ultrafine particles were investigated both horizontally and vertically in the large urban agglomerate of Barcelona, Spain. Within the SAPUSS project (Solving Aerosol Problems by Using Synergistic Strategies), a large number of instruments was deployed simultaneously at different monitoring sites (road, two urban background, regional background, urban tower 150 m a.s.l., urban background tower site 80 m a.s.l.) during a 4 week period in September-October 2010. Particle number concentrations (N>5 nm) are highly correlated with black carbon (BC) at all sites only under strong vehicular traffic influences. By contrast, under cleaner atmospheric conditions (low condensation sink, CS) such correlation diverges towards much higher N/BC ratios at all sites, indicating additional sources of particles including secondary production of freshly nucleated particles. Size-resolved aerosol distributions (N10-500) as well as particle number concentrations (N>5 nm) allow us to identify three types of nucleation and growth events: (1) a regional type event originating in the whole study region and impacting almost simultaneously the urban city of Barcelona and the surrounding urban background area; (2) a regional type event impacting only the regional background area but not the urban agglomerate; (3) an urban type event which originates only within the city centre but whose growth continues while transported away from the city to the regional background. Furthermore, during these clean air days, higher N are found at tower level than at ground level only in the city centre whereas such a difference is not so pronounced at the remote urban background tower. In other words, this study suggests that the column of air above the city ground level possesses the optimal combination between low CS and high vapour source, hence enhancing the concentrations of freshly nucleated particles. By contrast, within stagnant polluted atmospheric conditions, higher N and BC

  2. Geodetic Infrastructure in the Ibiza and Barcelona Harbours for Sea Level Monitoring

    Science.gov (United States)

    Martinez-Benjamin, J. J.; Gili, J.; Lopez, R.; Tapia, A.; Perez, B.; Pros, F.

    2013-12-01

    The presentation is directed to the description of the actual situation and relevant information of the geodetic infrastructure of Ibiza and Barcelona sites for sea level determination and contribution to regional sea level rise. Time series are being analysed for mean sea level variations www.puertos.es. .In the framework of a Spanish Space Project, the instrumentation of sea level measurements has been improved by providing the Barcelona site with a radar tide gauge Datamar 2000C from Geonica s.l. near an acoustic tide gauge. Puertos del Estado installed in 2007 a MIROS radar tide gauge and the Barcelona Harbour Authority a GPS referente station in the roof of the new Control Tower situated in the Energy Pier. The radar sensor is over the water surface, on a L-shaped structure which elevates it a few meters above the quay shelf. 1-min data are transmitted to the ENAGAS Control Center by cable and then sent each 1 min to Puertos del Estado by e-mail. There is a GPS station Leica Geosystems GRX1200 GG Pro and antenna 1202. Precision levelling has been made several times in the last two years because the tower is founded in reclaimed land. The measured settlement rate is about 1cm/year that may be could mask the values registered by the tide gauge. A description of the actual infrastructure at Ibiza harbour at Marina de Botafoch, is presented and its applications to sea level monitoring and altimeter calibration in support of the main CGPS at Ibiza harbour. It is described the geometrical precision levelling made in June 2013 between the radar tide gauge and the GPS station. In particular, the CGPS located at Ibiza harbour is essential for its application to the marine campaign Baleares 2013, near Ibiza island. The main objective is to determine the altimeter bias for Jason-2, about 9:09 UTC September 15, 2013, and Saral/AltiKa, about 05:30 UTC September 16, UTC. These activities has been received funding of the Ministerio de Ciencia e Innovacion under Spanish

  3. Emprendimiento y supervivencia empresarial en época de crisis: El caso de Barcelona

    Directory of Open Access Journals (Sweden)

    Marian Buil Fabregá

    2016-02-01

    Full Text Available Objeto: El trabajo que se presenta en este artículo es la primera parte de un estudio sobre las estrategias llevadas a cabo por las empresas en épocas de crisis. Este primer artículo analiza las características financieras de las empresas creadas en Barcelona en los inicios de la crisis y que han sobrevivido durante la misma. Este estudio pretende contrastar las características financieras de las empresas analizadas con las medidas llevadas a cabo para mantener su rentabilidad en épocas de crisis y determinar si existen patrones de comportamiento distintos entre empresas creadas en sectores industriales y no industriales. Diseño/metodología: Análisis estadístico-descriptivo de las medias y variaciones de los principales indicadores financieros y de recursos humanos que se relacionan con  las medidas tomadas por las empresas  en época de crisis. La base de datos utilizada ha sido el SABI y el período de referencia 2008-2013. Aportaciones y resultados: Las empresas creadas en Barcelona en los inicios de la crisis y que han sobrevivido presentan algunos rasgos comunes: muestran un EBITDA positivo, los recursos propios constituyen una fuente relevante de financiación, tienden a reducir su nivel de endeudamiento o se disminuye inversión. Los ratios de la rentabilidad financiera son muy bajos ya que el patrimonio neto de la empresa es alto y la deuda es baja. Referente a los indicadores de recursos humanos, nos indican la importancia de las empresas de nueva creación en la generación de empleo y sus tasas de productividad son altas. Valor añadido: Determinar las características financieras de las empresas creadas en los inicios de la crisis y que sobreviven en Barcelona en época de crisis para determinar si siguen medidas para mantener su rentabilidad. La existencia de un conjunto de medidas estadísticamente significativas puede servir de guía a los emprendedores del futuro así como de las políticas públicas de apoyo a los

  4. Climate Change and Health in the Urban Context: The Experience of Barcelona.

    Science.gov (United States)

    Villalbí, Joan R; Ventayol, Irma

    2016-07-01

    Climate change poses huge challenges for public health, and cities are at the forefront of this process. The purpose of this paper is to present the issues climate change poses for public health in the city of Barcelona, how they are being addressed, and what are the current major challenges, trying to contribute to the development of a baseline understanding of the status of adaptation in cities from a public health perspective. The major issues related to climate change faced by the city are common to other urban centers in a Mediterranean climate: heat waves, water availability and quality, air quality, and diseases transmitted by vectors, and all are reviewed in detail with empirical data. They are not a potential threat for the future, but have actually challenged the city services and infrastructure over the last years, requiring sustainable responses and rigorous planning. PMID:27387343

  5. An observational study of the 7 September 2005 Barcelona tornado outbreak

    Directory of Open Access Journals (Sweden)

    J. Bech

    2007-01-01

    Full Text Available This paper presents an observational study of the tornado outbreak that took place on the 7 September 2005 in the Llobregat delta river, affecting a densely populated and urbanised area and the Barcelona International airport (NE Spain. The site survey confirmed at least five short-lived tornadoes. Four of them were weak (F0, F1 and the other one was significant (F2 on the Fujita scale. They started mostly as waterspouts and moved later inland causing extensive damage estimated in 9 million Euros, three injured people but fortunately no fatalities. Large scale forcing was provided by upper level diffluence and low level warm air advection. Satellite and weather radar images revealed the development of the cells that spawned the waterspouts along a mesoscale convergence line in a highly sheared and relatively low buoyant environment. Further analysis indicated characteristics that could be attributed indistinctively to non-supercell or to mini-supercell thunderstorms.

  6. Telefotografía en Unión Radio Barcelona: 1930-1932

    OpenAIRE

    Ruiz del Olmo, Francisco Javier

    2011-01-01

    A finales de los años veinte del siglo pasado, la cadena radiofónica Unión Radio puso en marcha una serie de servicios de transmisión de fotografías, a través exclusivamente de sus emisoras de Madrid y Barcelona. En un contexto de competencia radiofónica, de experimentación y supremacía técnica como factor de prestigio social ante radioaficionados y autoridades, así como de diversificación de la programación y búsqueda de nuevas fórmulas, la telefotografía se convertirá en una forma de radiod...

  7. Los tipos de iniciativas empresariales de los inmigrantes en las ciudades de Barcelona, Madrid y Valencia

    Directory of Open Access Journals (Sweden)

    Leonardo Cavalcanti

    2009-12-01

    Full Text Available El principal objetivo de este artículo es presentar una tipología, de carácter cualitativo, de los perfiles de los empresarios de origen inmigrante procedentes de países no comunitarios en España, y de las características de sus negocios. Se trata de ilustrar, en términos de representatividad tipológica, los rasgos y el potencial de las empresas regentadas por inmigrantes. Dicho análisis se realiza a partir del estudio titulado «El empresariado inmigrante en España» (Solé, Parella y Cavalcanti, 2007, financiado por la Fundación La Caixa, en tres contextos socioespaciales concretos donde se da una elevada concentración de población extranjera: Barcelona, Madrid y Valencia.

  8. Articulación entre lo local y lo global. Templo Sagrada Familia en Barcelona

    Directory of Open Access Journals (Sweden)

    Patricia López González

    2015-03-01

    Full Text Available At present the global and local link becomes an increasingly importance to balanced regional development. The architecture plays a key role as articulator of both scales. In Barcelona, the Sagrada Familia Temple stands as an element that responds to the global space of flows and to the space of places. It aims to understand the reality of these works so that the physical planning of cities put a special look on these urban landmarks. For this is proposed to analyze and evaluate the spatial effect that has been the link between local and global at the Sagrada Familia Temple from a theoretical standpoint and from three areas: the economic, the infrastructural and the morphology. The results show that the project begun by Gaudí in 1883 can meet the demands of both global and local scale and to develop the building along with the neighborhood has not been a negative impact on it.

  9. Documents sobre el monestir de Sant Pau del Camp, de Barcelona (segles XIII-XIV)

    OpenAIRE

    Mutgé Vives, Josefina

    1994-01-01

    Com que entre les moltes línies d'investigació cultivades pel Dr. Trenchs també hi figurava la història monàstica -només ens cal recordar que la seva tesi de llicenciatura, presentada en el llunya any de 1966, consistí en l'estudi de la Cartoixa de Scala Dei-, ens plau d'oferir-li aquí alguns documents inèdits sobre el monestir benedictí de Sant Pau del Camp, de Barcelona, procedents dels registres de cancelleria reial de l'Arxiu de la Corona d'Aragó, que constitueixen la primícia d'un futur ...

  10. A Neanderthal Lower Incisor from Cova del Gegant (Sitges, Barcelona, Spain)

    OpenAIRE

    Rodríguez García, Laura; García González, Rebeca; Sanz, Montserrat; Daura, Joan; Quam, Rolf; Josep María FULLOLA; Arsuaga, Juan Luis

    2011-01-01

    La Cova del Gegant está localizada en el término municipal de Sitges (Barcelona, España). La cavidad está desarrollada dentro de una diaclasa en un pequeño sistema kárstico que contiene material paleontológico y arqueológico del Pleistoceno Superior (Daura, et al., 2005). El yacimiento fue excavado por primera vez en 1954 y posteriormente en la década de los ’70 (Viñas, 1972; Viñas & Villalta, 1975) y ‘80 (Martínez et al., 1985; Mora, 1988; Martínez et al., 1990). Finalmente desde el 2007 el ...

  11. DEPORTE Y DEMOCRATIZACIÓN EN LA BARCELONA CONTEMPORÁNEA: APUNTES PARA UN ESTUDIO

    Directory of Open Access Journals (Sweden)

    Sixte Abadía Naudí

    2005-01-01

    portiva, la implicación de la administración local, la vinculación con los movimientos sociales operantes, las formas de sociabilidad deportiva y la presencia del deporte en la calle. En definitiva este artículo es el resultado de una primera fase de investigación de un estudio para una futura tesis doctoral sobre las transformaciones del fenómeno social deportivo durante la transición política española en el caso de la ciudad de Barcelona. En él se recogen algunas de las consideraciones generales que conforman el marco interpretativo fundamental del estudio, acerca de la vinculación entre proceso de democratización política y características del proceso de masificación deportiva.

  12. Estudio cronológico de la evolución de los estucos de cal en la ciudad de Barcelona

    OpenAIRE

    Méndez Pendavis, Edith

    2010-01-01

    El objetivo de este proyecto es el Estudio cronológico de la evolución de los Estucos de Cal en la Ciudad de Barcelona. Barcelona es una ciudad donde los estucos de cal están muy presentes en sus fachadas, actualmente no se conoce que exista mucha documentación sobre este tema así que mediante este trabajo se intenta conocer más profundamente esta técnica de revestimiento de fachadas centrado principalmente en Barcelona. A partir de la poca información que he podido recopila...

  13. Barcelona Rocks, a mobile app to learn geology in your city

    Science.gov (United States)

    Geyer, Adelina; Cabrera, Lluis; Alias, Gemma; Aulinas, Meritxell; Becerra, Margarita; Casadellà, Jordi; Clotet, Roger; Delclós, Xavier; Fernández-Turiel, José-Luis; Tarragó, Marta; Travé, Anna

    2016-04-01

    Barcelona Rocks is an application for personal mobile devices suitable for secondary and high school students as well as the general public without a solid background in Earth Sciences. The main objective of this app is to teach Geology using as learning resource our city façades and pavements. Additionally, Barcelona Rocks provides a short explanation about the significance of the appearance of the different rock types at the different historical periods of the city. Although it has been designed as a playful learning resource for secondary school students, the level of knowledge also allows bringing some basic concepts and principles of Earth Sciences to the general public, irrespective of age. This app is intended to provide the degree of interactivity and entertainment required by the different individual users and aims to: (i) Explain the techniques and experiments that allow the user to identify the different rocks, as well as their genesis. (ii) Introduce geology to the youngest users in a more attractive and entertaining way, providing also some information regarding the use of the different ornamental rocks during the different historical periods of the city: roman, medieval, etc. (iii) Provide historical and architectural information of the selected buildings in order to improve the city's historical architectural knowledge of the users. (iv) Show the non-expert public the importance of their country's geology. (v) Develop of outreach and dissemination resources taking advantage of the versatile and potent mobile application format using also the content as support material for science courses, seminars, or social learning events. (vi) Encourage new generations of Earth Scientists (vii) Promote science and scientific culture of the society, integrating culture and innovation as essential for the emergence of new scientific and technological vocations, promoting critical thinking, understanding of the scientific method and the social interest in science

  14. La música religiosa a la ciutat de Barcelona (ss. XVII-XIX

    Directory of Open Access Journals (Sweden)

    Codina i Giol, Daniel

    2002-12-01

    Full Text Available A chronological account of the Kapellmeisters of the three principal sites in Barcelona: the Cathedral, the church of Santa Maria del Mar and the Palau de la Comtessa, including their compositions -most of which are ignored today as the scores have been lost- based on the printed booklets of the popular chants and oratories retrieved from the XVII to the XIX centuries. The account in question draws, in part, on the printed Catàleg dels villancets i oratoris impresos de la Biblioteca de Montserrat (ss. XVII-XIX, which the very author of this study has himself prepared and which is to be published in due course. The said catalogue will undoubtedly make a valuable contribution to the study of the history of music.

    [ca] Relació històrica i ordenada dels mestres de capella deis tres centres principals de la ciutat de Barcelona: la Catedral, Santa Maria del Mar i el Palau de la Comtessa i llurs obres -la majoria desconegudes perquè se n'ha perdut la música escrita- a partir deis Ilibrets impresos deis villancets i deis oratoris, en el període dels segles XVII-XIX. El treball aprofita part de l'obra Catàleg dels villancets i oratoris impresos de la Biblioteca de Montserrat (ss. XVII-XIX, que el mateix autor de l'article ha preparat i que està en curs d'edició i és una mostra de la utilitat d'aquest Catàleg per a conèixer de manera mes precisa la historia musical.

  15. Photochemical modelling of the Barcelona area under weak pressure synoptic summer conditions

    International Nuclear Information System (INIS)

    This city of Barcelona and its surrounding area, located in the western Mediterranean basin, can reach high levels of O3 in summertime under weak pressure synoptic conditions. To study the origin of this photochemical pollution, the episode that took place between the 3 and 5 August 1990 was chosen. The main meteorological mesoscale flows that take place in the region, such as sea and land breeze, convection cells and topographic injections, were reproduced with the meteorological non-hydrostatic mesoscale model MEMO for 5 August 1990. Industrial and commercial activity on 5 August 1990 was very low because it was a Sunday in the summer holiday period. Therefore, the emissions inventory calculated for this day in an area of 80x80 km2 around Barcelona showed that the main sources of VOC were traffic (51%) and vegetation (34%), while NOx were mostly emitted by traffic (88%). Photochemical simulation with the MARS model has shown that the combination of mesoscale circulations and local emissions is crucial in the production of O3. For instance, NOx inland transport towards regions where biogenic VOC are emitted causes the formation of O3, while topographic injections cause the formation of elevated O3 air layers. The synoptic wind, coming from the northeast in this case, also played an important role in advecting the air masses with local generated O3 away from their precursor emission sources. Evaluation of the model simulations is also performed and discussed by means of comparison of meteorological measurements in 9 surface stations and concentration measurements in 5 surface stations. (Author)

  16. EL PROYECTO DE LA OLIMPIADA POPULAR DE BARCELONA (1936, ENTRE COMUNISMO INTERNACIONAL Y REPUBLICANISMO REGIONAL

    Directory of Open Access Journals (Sweden)

    André Gounot

    2005-01-01

    Full Text Available Los archivos del KOMINTERN en el Centro Ruso de Conservación y Estudio de los Documentos sobre la Historia Contemporánea (CRCRHC de Moscú, recientemente abiertos para el estudio científico, nos ofrecen fuentes documentales fundamentales para entender el desarrollo de la Internacional Deportiva Roja (IDR como una de las organizaciones auxiliares del citado KOMINTERN. Las referidas fuentes documentales han aportado nuevas informaciones y datos sobre la creación en España en 1931, con el establecimiento de la 2ª República, de la Federación Cultural y Deportiva Obrera (FCDO, organización que en 1934 se adhiere a la Internacional Deportiva Roja (IDR, siendo el embrión del nacimiento del Comité Catalán pro Deporte Popular que presentaría el proyecto de la Olimpiada Popular de Barcelona de 1936 como alternativa a la Olimpiada de Berlín de 1936 de Hitler. Por otra parte la Internacional Deportiva Roja (IDR creó a finales de 1935 el Comité Internacional para la defensa de la Idea Olímpica, cuyo objetivo era coordinar los movimientos de oposición a los Juegos de Berlín. También la propia Federación Cultural y Deportiva Obrera (FDCO fundó en 1936 el Comité Español de Defensa del Espíritu Olímpico con este mismo fin. La Olimpiada Popular de Barcelona de 1936 permitió entre otras cosas expresar la nueva alianza entre Comunismo y Olimpismo, construida con discursos contradictorios apoyándose en el universalismo, la paz y la igualdad de razas.

  17. Quantification of thermal bioclimate for the management of urban design in Mediterranean climate of Barcelona, Spain.

    Science.gov (United States)

    Rodríguez Algeciras, José Abel; Matzarakis, Andreas

    2016-08-01

    In order to contribute to the sustainability of the outdoor environment, knowledge about the urban thermal bioclimate should be transferred into climatic guidelines for planning. The general framework of this study responds to the need of analyzing thermal bioclimate in Mediterranean climate regions and its influence as an urban design factor. The paper analyzes the background of the urban climate and thermal bioclimate conditions in Barcelona (Spain), through the effect of shade conditions and wind speed variations. Simulations of shade and wind speed variations were performed to evaluate changes in thermal bioclimate due to modifications in urban morphology. Air temperature, relative humidity, wind speed, and solar radiation for the period from January, 2001 to January, 2015 were used to calculate physiologically equivalent temperature (PET) using the RayMan model. The results demonstrate that shade is the most important strategy to improve urban microclimatic conditions. In Barcelona, human thermal comfort conditions can be improved by shade and wind speed increase in terms of PET above 23 °C and by a wind speed decrease for thresholds of PET below 18 °C. Heat stress situations can be mitigated by shade and wind speed increase in conditions above 35 and 45 °C, respectively. The results of the study are an important contribution for urban planners, due to their possibilities and potential for the description of microclimatic conditions in Mediterranean climate regions. The knowledge is useful for improved human thermal comfort conditions, from the suitable configuration of urban form and architecture. PMID:26694490

  18. Compact Reactor

    International Nuclear Information System (INIS)

    Weyl's Gauge Principle of 1929 has been used to establish Weyl's Quantum Principle (WQP) that requires that the Weyl scale factor should be unity. It has been shown that the WQP requires the following: quantum mechanics must be used to determine system states; the electrostatic potential must be non-singular and quantified; interactions between particles with different electric charges (i.e. electron and proton) do not obey Newton's Third Law at sub-nuclear separations, and nuclear particles may be much different than expected using the standard model. The above WQP requirements lead to a potential fusion reactor wherein deuterium nuclei are preferentially fused into helium nuclei. Because the deuterium nuclei are preferentially fused into helium nuclei at temperatures and energies lower than specified by the standard model there is no harmful radiation as a byproduct of this fusion process. Therefore, a reactor using this reaction does not need any shielding to contain such radiation. The energy released from each reaction and the absence of shielding makes the deuterium-plus-deuterium-to-helium (DDH) reactor very compact when compared to other reactors, both fission and fusion types. Moreover, the potential energy output per reactor weight and the absence of harmful radiation makes the DDH reactor an ideal candidate for space power. The logic is summarized by which the WQP requires the above conditions that make the prediction of DDH possible. The details of the DDH reaction will be presented along with the specifics of why the DDH reactor may be made to cause two deuterium nuclei to preferentially fuse to a helium nucleus. The presentation will also indicate the calculations needed to predict the reactor temperature as a function of fuel loading, reactor size, and desired output and will include the progress achieved to date

  19. Disfagia en ancianos que viven en residencias geriátricas de Barcelona Dysphagia in the elderly living in nursing homes Barcelona

    Directory of Open Access Journals (Sweden)

    M.ª José Torres Camacho

    2011-03-01

    Full Text Available El 15% de las personas mayores de 65 años sufre disfagia y la prevalencia en residencias geriátricas (RG se estima en un 40%. Objetivos: conocer la prevalencia de ancianos con disfagia en RG de Barcelona y describir el estado funcional (físico y psíquico, edad, sexo, patologías, fármacos que inciden en la posible aparición de la disfagia y valorar las medidas dietéticas adoptadas por las RG para el manejo de la disfagia. Métodos: se han estudiado 1.777 residentes de 66 RG valorados por la Unidad de Atención Domiciliaria Geriátrica (UADG hasta septiembre de 2008. El estudio se realiza mediante un cuestionario elaborado por la UADG asesorado por Nestlé Nutrition. Resultados: el perfil de las personas con disfagia es de mujeres mayores de 85 años con dependencia física importante y deterioro cognitivo severo. La mitad presenta algún tipo de demencia. La prevalencia de disfagia es del 5,40%. La disfagia a líquidos es del 88,52%. La utilización de espesantes comerciales es reducida. La prevalencia de disfagias a texturas mixtas es del 76,03%. La dieta triturada se da en el 79,16%. Utiliza dieta adecuada el 87,5%. La disfagia sólo consta en la historia clínica en el 13,54%. Conclusiones: la disfagia debe quedar reflejada en la historia clínica. El personal de las RG necesita formación para reconocer los signos de alerta indicativos de disfagia. Las medidas dietéticas son fundamentales.15% of people over 65 suffer dysphagia and prevalence in geriatric residences (GR is estimated at 40%. Objectives: to determine the prevalence of dysphagia in elderly in GR at Barcelona and to describe the functional status (physical and mental, age, sex, diseases, drugs that affect the possible occurrence of dysphagia and to assess dietary measures taken by the GR to management of dysphagia. Methods: we studied 1.777 residents of 66 GR, assessed by the Geriatric Home Care Unit (UADG until September 2008. The study was conducted by questionnarie

  20. NEUTRONIC REACTOR

    Science.gov (United States)

    Anderson, H.L.

    1960-09-20

    A nuclear reactor is described comprising fissionable material dispersed in graphite blocks, helium filling the voids of the blocks and the spaces therebetween, and means other than the helium in thermal conductive contact with the graphite for removing heat.

  1. NUCLEAR REACTOR

    Science.gov (United States)

    Miller, H.I.; Smith, R.C.

    1958-01-21

    This patent relates to nuclear reactors of the type which use a liquid fuel, such as a solution of uranyl sulfate in ordinary water which acts as the moderator. The reactor is comprised of a spherical vessel having a diameter of about 12 inches substantially surrounded by a reflector of beryllium oxide. Conventionnl control rods and safety rods are operated in slots in the reflector outside the vessel to control the operation of the reactor. An additional means for increasing the safety factor of the reactor by raising the ratio of delayed neutrons to prompt neutrons, is provided and consists of a soluble sulfate salt of beryllium dissolved in the liquid fuel in the proper proportion to obtain the result desired.

  2. Chemical Reactors.

    Science.gov (United States)

    Kenney, C. N.

    1980-01-01

    Describes a course, including content, reading list, and presentation on chemical reactors at Cambridge University, England. A brief comparison of chemical engineering education between the United States and England is also given. (JN)

  3. NUCLEAR REACTOR

    Science.gov (United States)

    Anderson, C.R.

    1962-07-24

    A fluidized bed nuclear reactor and a method of operating such a reactor are described. In the design means are provided for flowing a liquid moderator upwardly through the center of a bed of pellets of a nentron-fissionable material at such a rate as to obtain particulate fluidization while constraining the lower pontion of the bed into a conical shape. A smooth circulation of particles rising in the center and falling at the outside of the bed is thereby established. (AEC)

  4. Nuclear reactor

    International Nuclear Information System (INIS)

    In order to reduce neutron embrittlement of the pressue vessel of an LWR, blanked off elements are fitted at the edge of the reactor core, with the same dimensions as the fuel elements. They are parallel to each other, and to the edge of the reactor taking the place of fuel rods, and are plates of neutron-absorbing material (stainless steel, boron steel, borated Al). (HP)

  5. Una aproximación a la segregación digital metropolitana y urbana: las comarcas de la provincia de Barcelona y los distritos de la ciudad de Barcelona en el año 2000

    Directory of Open Access Journals (Sweden)

    Chaparro Mendivelso Jeffer

    2008-12-01

    Full Text Available La segregación digital se refiere a la diferenciación en cuanto al acceso y al uso de las tecnologías digitales de la información y la comunicación (TDIC . Esa diferenciación puede establecerse tanto en términos sociodemográficos como territoriales. El artículo que se presenta es un intento de perfilar la segregación digital en las escalas regional y local, específicamente en las comarcas de la provincia de Barcelona y en los distritos de la ciudad de Barcelona en el año 2000. El uso de información a nivel de hogares permitió constatar territorialmente la existencia de algunas variables sociodemográficas que influyen en la conexión a Internet.

  6. Revisió dels odonats valencians de la col·lecció d’artròpodes del Museu de Ciències Naturals de Barcelona

    Directory of Open Access Journals (Sweden)

    Fontana-Bria, L.

    2012-07-01

    Full Text Available Revision of Valencian dragonflies in the arthropod collection at the Museu de Ciències Naturals de Barcelona The current work shows the species of Valencian dragonflies preserved in the arthropod collection at the Museu de Ciències Naturals de Barcelona (Spain. The collection contains a total of 33 specimens belonging to 12 species, representing 18% of the known species in the Autonomous Community of Valencia.

  7. Revisió dels odonats valencians de la col·lecció d’artròpodes del Museu de Ciències Naturals de Barcelona

    OpenAIRE

    Fontana-Bria, L.; Selfa, J.

    2012-01-01

    Revision of Valencian dragonflies in the arthropod collection at the Museu de Ciències Naturals de Barcelona The current work shows the species of Valencian dragonflies preserved in the arthropod collection at the Museu de Ciències Naturals de Barcelona (Spain). The collection contains a total of 33 specimens belonging to 12 species, representing 18% of the known species in the Autonomous Community of Valencia.

  8. The Role of Bullfighting and FC Barcelona in the Emancipation of Catalonia from Spain (El papel de la corrida de toros y FC Barcelona en la emancipación de Cataluña de España

    Directory of Open Access Journals (Sweden)

    TKac, John A.

    2014-09-01

    Full Text Available Abstract: This paper looks at the role that bullfighting and FC Barcelona have played in the growing independence movement in Catalonia. This article will discuss nations, the importance of bullfighting and soccer to Iberian cultures, Catalan political parties and their role in the nationalist movement, the vote to prohibit bullfighting and FC Barcelona´s increasing political conscious. I conclude that bullfighting and soccer have been used by political parties and those associated with the nationalist movement to foster feelings of difference with Spain. These feelings have been passed from the top down to the Catalan people and risk alienating those who are not in agreement with the nationalist movement. Resumen: Este trabajo examina el papel que la corrida de toros y el equipo de fútbol FC Barcelona han hecho en el movimiento continuo hacia la independencia en Cataluña. Discute el concepto de la nación, la importancia de las corridas y el fútbol en culturas ibéricas, partidos políticos catalanes y su rol en el voto a favor de la prohibición de las corridas en Cataluña y la evolución de la conciencia política cada vez más evidente de FC Barcelona. Concluyo que los partidos políticos y otros asociados con el movimiento hacia la independencia se han aprovechado de las corridas y el fútbol para destacar diferencias culturales con España. Esta actitud de diferencia se ha trasladado de arriba-abajo al pueblo catalán y el movimiento nacionalista corre el riesgo de alienar a los que no comparten sus creencias.

  9. Building a panel data set on fuel stations located in the Spanish regional areas of Madrid and Barcelona.

    Science.gov (United States)

    Balaguer, Jacint; Ripollés, Jordi

    2016-06-01

    The data described in this article were collected daily over the period June 10, 2010, to November 25, 2012, from the website of the Spanish Ministry of Industry, Energy and Tourism. The database includes information about fuel stations regarding to their prices (both gross and net of taxes), brand, location (latitude and longitude), and postal code in the Spanish provinces of Madrid and Barcelona. Moreover, obtaining the postal codes has allowed us to select those stations that are operating within the metropolitan areas of Madrid and Barcelona. By considering those fuel stations that uninterruptedly provided prices during the entire period, the data can be especially useful to explore the dynamics of prices in fuel markets. This is the case of Balaguer and Ripollés (2016), "Asymmetric fuel price responses under heterogeneity" [1], who, taking into account the presence of the potential heterogeneity of the behaviour of fuel stations, used this statistical information to perform an analysis on asymmetric fuel price responses.

  10. Polycentricity, Performance and Planning: Concepts, Evidence and Policy in Barcelona, Catalonia

    Directory of Open Access Journals (Sweden)

    Jaume Masip-Tresserra

    2016-04-01

    objectives.It is necessary to conduct a further exploration of the three aforementioned major issues related to (1 the conceptualization of polycentricity, (2 the empirical analysis of the dis(advantages of polycentricity, and (3 how to interpret the relationship between polycentricity in research and polycentricity in policy. That is the key motivation for this thesis: to link the knowledge of polycentric constellations and their economic, social, and environmental effects to planning practice and policy in metropolitan areas.General aims and questionsThe overarching research goal of this dissertation is to contribute to the debate on polycentricity in the three interrelated issues mentioned above. First, it aims to renew the conceptualization of polycentricity by bringing together two distinct literatures, namely, the literature on intra-urban polycentricity and the literature on inter-urban polycentricity. Second, it aims to empirically substantiate the relationship between polycentricity and performance in metropolitan areas. Third, it aims to understand how the makers of spatial plans have addressed polycentric development and how the assumed benefits of polycentricity can be realized in planning practice. To accomplish these goals, this thesis addresses three general research questions:How has the conceptualization of polycentric development in spatial plans evolved over time, and what can be learned from this evolution?How has polycentricity been conceptualized in research, and how can it inform planning practice?To what extent does polycentricity foster better performance in a metropolitan area, and how can its effects be realized in planning practice?Single case study: the Barcelona metropolitan regionThe case study of this thesis is the Barcelona metropolitan region. With approximately 5 million people, the Barcelona metropolitan region is the primary urban agglomeration of Catalonia, an autonomous region of 7.5 million inhabitants that is located in Spain. The

  11. A Mediterranean case study of flood evolution: the Metropolitan Area of Barcelona

    Science.gov (United States)

    Llasat, Maria Carmen; Gilabert, Joan; Llasat-Botija, Montserrat; Cortès, Maria; Marcos, Raül; Martín-Vide, Juan Pedro; Turco, Marco; Falcón, Lluis

    2016-04-01

    Flood risk changes in Mediterranean Region integrate multiple factors, some of them related with the hazard (i.e. rainfall intensity), the vulnerability and exposure (i.e. population or assets), feedback processes that affect both hazard and vulnerability (i.e. urbanization of flood prone areas), mitigation and adaptation measures (i.e. rainwater tanks or early warning systems), and the available information used to estimate flood events (i.e. newspapers or gauged data). Flood events in the West Mediterranean region are usually produced as a consequence of very intense and local precipitation, mainly recorded on late summer and autumn that can give place to flash-floods in little torrential rivers (usually non-permanent flows) or urban floods. The Metropolitan Area of Barcelona (AMB), Spain, constitutes a good paradigm of a Mediterranean coast region, with strong urbanization of flood prone areas and high population density in an area crossed by numerous streams. The AMB is constituted by 36 municipalities with a total population above 3.200.000 inhabitants in an extension of 636 km². The major part of the population is concentrated between the Besós River and the Llobregat River, the Littoral Range and the Mediterranean Sea. Although both rivers have experienced catastrophic flood events (i.e. 25 September 1962, 815 deaths; 19-23 September 1971, 19 deaths; October 1987, 8 deaths), the most frequent situation is related with floods in non-permanent streams. Their main impacts are consequence of drainage and runoff problems and can affect both urban and rural areas. This contribution explores the evolution of land uses, population and precipitation from the middle of the 20th century until now, and how these changes have affected (or not), the flood risk. To do it, daily and sub-daily rainfall series, discharge series for the Llobregat and Besós Rivers, population data and land use changes have been analyzed. Future precipitation projections provided by an

  12. La casa de Bernat de Sarrià, canonge de la Seu de Barcelona, vers 1300

    Directory of Open Access Journals (Sweden)

    Batlle i Gallart, Carme

    1998-12-01

    Full Text Available This article studies the will and inventory of goods left by a rich canon, named Bernat of Sarria, who belonged to a noble family from the surroundings of Barcelona, where his house was built. The canon had a cousin —also named Bernat—, who was a king's counsellor and a very influential person at the court. The inventory is dated the day after the canon was dead, on the 26th July 1302. It contains a large number of clothes, furniture and coins, but neither books nor weapons. The canon also possessed several servants and three slaves, fourteen decorated silver cups, twelve rings and some landed properties in Premià and Alella (villages not far from Barcelona, that produced crops of wheat, barley, wine and oil. A benefice in memory of the date of his death was constituted, with his fortune, at Saint Michael's chapel of Barcelona cathedral. This benefice was devoted to the poor and especially to nourish, for ever, a poor person who was dependent of the cathedral's Almoina. The canon destined for these two pious institutions the amount he obtained of selling his slaves.[fr] Étude du testament et de l'inventaire des propriétés d'un riche chanoine. Bernat de Sarrià, appartenant à une famille de la petite noblesse des alentours de Barcelone, où se trouvait leur maison fortifiée. Un chevalier, cousin et avec le même nom du chanoine, était conseiller du roi et un grand personnage à la cour à cette époque. L'inventaire, daté du lendemain de la mort du chanoine, le 26 juillet 1302, est très riche en robes, meubles, monnaies, mais pas du tout en livres ou armes. Le chanoine possède trois esclaves, en plus des servants, catorze coupes d'argent, plus ou moins décorées avec des émaux et des incisions, une douzaine d'anneaux, et aussi des propriétés foncières à Premia et à Alella, sur la côte nord de Barcelone, d'où il tire le blé, l'orge, le vin et l'huile gardés dans son grenier et son cellier. Sa fortune est destinée à un b

  13. Long term effects of traffic noise on mortality in the city of Barcelona, 2004-2007.

    Science.gov (United States)

    Barceló, Maria Antònia; Varga, Diego; Tobias, Aurelio; Diaz, Julio; Linares, Cristina; Saez, Marc

    2016-05-01

    Numerous studies showing statistically significant associations between environmental noise and adverse health effects already exist for short-term (over one day at most) and long-term (over a year or more) noise exposure, both for morbidity and (albeit to a lesser extent) mortality. Recently, several studies have shown this association to be independent from confounders, mainly those of air pollutants. However, what has not been addressed is the problem of misalignment (i.e. the exposure data locations and health outcomes have different spatial locations). Without any explicit control of such misalignment inference is seriously compromised. Our objective is to assess the long-term effects of traffic noise on mortality in the city of Barcelona (Spain) during 2004-2007. We take into account the control of confounding, for both air pollution and socioeconomic factors at a contextual level and, in particular, we explicitly address the problem of misalignment. We employed a case-control design with individual data. We used deaths resulting from myocardial infarction, hypertension, or Type II diabetes mellitus in Barcelona between 2004 and 2007 as cases for the study, while for controls we used deaths (likewise in Barcelona and over the same period of time) resulting from AIDS or external causes (e.g. accidental falls, accidental poisoning by psychotropic drugs, drugs of abuse, suicide and self-harm, or injuries resulting from motor vehicle accidents). The controls were matched with the cases by sex and age. We used the annual average equivalent A-weighted sound pressure levels for daytime (7-21h), evening-time (21-23h) and night-time (23-7h), and controlled for the following confounders: i) air pollutants (NO2, PM10 and benzene), ii) material deprivation (at a census tract level) and iii) land use and other spatial variables. We explicitly controlled for heterogeneity (uneven distribution of both response and environmental exposures within an area), spatial dependency

  14. Método de doble punzonamiento de tracción indirecta para concreto reforzado con fibra: Ensayo Barcelona

    OpenAIRE

    Aire, Carlos; Aguado de Cea, Antonio; Molins i Borrell, Climent

    2013-01-01

    The present work describes the results of an experimental investigation on the performances of concrete specimens reinforced with steel fibers using the double punch test (DPT). The DPT is an indirect tensile test based on the configuration of double-punch test, named, Barcelona test that was developed for the systematic control of fiber reinforced concrete. DPT can be carried out by testing 150 × 150 mm concrete cylinders subjected to double punching test. Previous experimental results have ...

  15. The Potential impacts of electric vehicles on air quality in the urban areas of Barcelona and Madrid (Spain)

    OpenAIRE

    Soret Miravet, Albert; Guevara Vilardell, Marc; Baldasano Recio, José María

    2014-01-01

    This work analyses the potential air quality improvements resulting from three fleet electrification scenarios (similar to 13, 26 and 40%) by replacing conventional vehicles with Electric Battery Vehicles (EBVs), Plug-in Hybrid Electric Vehicles (PHEVs) and Hybrid Electric Vehicles (HEVs). This study has been performed for the cities of Barcelona and Madrid (Spain), where road transport is the primary emission source. In these urban areas, several air quality problems are present, mainly rela...

  16. Field evidence of social influence in the expression of political preferences: the case of secessionist flags in Barcelona

    OpenAIRE

    Antonio Parravano; Noguera, José A.; Paula Hermida; Jordi Tena-Sánchez

    2014-01-01

    Models of social influence have explored the dynamics of social contagion, imitation, and diffusion of different types of traits, opinions, and conducts. However, few behavioral data indicating social influence dynamics have been obtained from direct observation in "natural" social contexts. The present research provides that kind of evidence in the case of the public expression of political preferences in the city of Barcelona, where thousands of citizens supporting the secession of Cataloni...

  17. Delivery of psychological services to the U.S. Olympic team at the 1992 summer Olimpic Games: Barcelona, Spain

    OpenAIRE

    May, Jerry R.

    1992-01-01

    A description of the psychological services to the U.S. Olympic Team at the 1992 summer Olympic Games, Barcelona, Spain is provided. Services were based upon a crisis intervention model. Philosophy, preparation for games, criteria for psychologists selection, goals and objectives of psychological activities, range of services and intervention strategies are provided, as well as recommendations for the future. The U.S. Olympic team consisted of an excess of six hundred fifty male and female at...

  18. Traffic-related air pollution, noise at school, and behavioral problems in Barcelona schoolchildren: a cross-sectional study.

    OpenAIRE

    Forns i Guzman, Joan, 1981-; Dadvand, Payam; Foraster Pulido, Maria, 1984-; ??lvarez Pedrerol, Mar; Rivas, Ioar; L??pez Vicente, M??nica; Suades Gonz??lez, Elisabet; Garc??a Esteban, Raquel; Esnaola, Mikel; Cirach, Marta; Grellier, James; Basaga??a Flores, Xavier; Querol, Xavier; Guxens, M??nica; Nieuwenhuijsen, Mark J.

    2016-01-01

    Background: The available evidence of the effects of air pollution and noise on behavioral development is limited, and it overlooks exposure at schools, where children spend a considerable amount of time. Objective: We aimed to investigate the associations of exposure to traffic-related air pollutants (TRAPs) and noise at school on behavioral development of schoolchildren. Methods: We evaluated children 7–11 years of age in Barcelona (Catalonia, Spain) during 2012–2013 within the BREATHE proj...

  19. Improved marketing communications of Creative Media Group S.L. towards the advertisers in the Barcelona Metropolitan magazine

    OpenAIRE

    Jumppanen, Veikko

    2009-01-01

    The objective of this thesis was to improve the marketing communications of a Barcelona-based publishing company towards its magazine advertiser clientele. The emerging downturn of the economy Spain experienced in 2008 created extra challenges for Creative Media Group to retain and develop customer relationships. The thesis discusses the research topic in the light of marketing communications, customer relationship management and print-media magazine adverting theory. Both quantitative an...

  20. Organization and management of building-site of central station on high-speed line Madrid-Barcelona French border.

    OpenAIRE

    Garcia Puig, Manel

    2009-01-01

    The thesis is about the organization and management of a construction site. The original project is the construction of the Central Station, high-speed line Madrid- Barcelona-French border. Because of the magnitude of the work, has been determined to split the building site into two phases. In a first phase, carrying out the works relating to access to the station and car park, in a second phase, the works related to the railway station and the platform. In the following ...

  1. The alignment of University curricula with the building of a Smart City: A case study from Barcelona

    OpenAIRE

    Grimaldri, Didier; Fernández Alarcón, Vicenç

    2016-01-01

    This paper argues the role of the University in the Smart City transformation strategy. The theoretical structure takes as reference the recent Complexity theory for city development and their application to the networks of the Connected city. The approach is based on a justified selection of Barcelona and its four universities. We carry out a deductive and interpretivist method interviewing 19 senior experts whole profiles represent the dif- ferent forces of the Triple Helix model. Our resul...

  2. The burnout syndrome and associated personality disturbances. The study in three graduate programs in Dentistry at the University of Barcelona

    OpenAIRE

    Alemany Martínez, Aurelia; Berini Aytés, Leonardo; Gay Escoda, Cosme

    2008-01-01

    Objective: Determine the presence of"burnout" syndrome and characteristic personality patterns in the students and faculty of three graduate programs in Dentistry at the University of Barcelona: Department of Oral Surgery and Implantology, Department of Orthodontics and Department of Integrated Dentistry. Materials and Methods: The study was carried out in 78 dentists. The level of"burnout" was evaluated using the Maslach Burnout Inventory, socio-demographic variables and, finally, the person...

  3. Viaducto sobre el rio Llobregat de la Autopista Barcelona-Tarragona, España

    Directory of Open Access Journals (Sweden)

    Fernández Casado, C.

    1973-02-01

    Full Text Available Situated in the vicinity of Barcelona, over the LIobregat River, this viaduct bears two roadways 16 meters wide and 440 meters long. It is a continuous viaduct formed of 11 sections of 40-meter spans and S double T section beams placed 3.35 meters apart. The bridge supports are also of double T formation, with a 2.5 meters wide vertical octagonal stem and changing in depth from 2 to 0.7 meters at the edge. The lower footing is supported on 9 piles each 1 meter in diameter. The 80 t beams were prefabricated in the factory and later put in place using a movable formwork. The continuity between beams was made possible by reinforcement placed in the upper slab of the deck and the lower part of the beams. A detailed study has been made on the redistribution of bending moments by creep and shrinking.Situado en las proximidades de Barcelona, y sobre el río Llobregat, está formado por dos calzadas de 16 m de ancho y 440 m de longitud. Es un viaducto continuo que consta de 11 vanos de 40 m de luz, cada uno de los cuales se compone de cinco vigas sección doble T con separación entre ellas de 3,35 metros. Las pilas sobre las que reposa tienen también forma doble T con fuste vertical octogonal de 2,5 m de ancho, cabezal superior en transición poligonal, hasta el borde, variable de 2 a 0,7 m y zapata inferior que se apoya sobre 9 pilotes de 1 m de diámetro. Tanto las vigas como el cabezal de las pilas están pretensados con cables de 150 toneladas. Las vigas de 80 t de peso fueron prefabricadas en taller y colocadas en obra por medio de una cimbra de lanzamiento. La continuidad entre vigas se realizó por medio de armadura pasiva, colocada en la losa superior del tablero y en la parte inferior de las vigas. Se ha llevado a cabo un estudio detallado de la redistribución de momentos flectores por fluencia y retracción.

  4. El comercio de los inmigrantes en el centro histórico de Barcelona en 2004

    Directory of Open Access Journals (Sweden)

    Serra del Pozo, Pau

    2006-12-01

    Full Text Available In the last decade the increasing number of foreign immigrants in Catalonia has been especially apparent in the Ciutat Vella district of Barcelona, where immigrants’ shops have multiplied. The Ciutat Vella immigrant shops have several features such as small size, a long working day and the presence of employed relatives together with other employees of the same origin as that of the employer. The dominant typologies of the shops are: groceries, tele shops, money transfer (for remittances, basars (general stores, butcher’s shops, retail and wholesale textile shops, bars and restaurants. The dominant foreign entrepreneurs are Pakistanis, Indians, Chinese, Morrocans, Dominicans, Bangladeshis, Filipinos and Algerians. The work shows the geographical specialization by shop typology and geographical origin of the entrepreneurs, the concentration of the shops by zones and by streets and the spatial correlation between retail, residence and religious centres.

    En la última década el creciente número de inmigrantes extranjeros en Cataluña se ha hecho especialmente patente en el distrito de Ciutat Vella de Barcelona, donde han proliferado los comercios de este colectivo. Los comercios de los inmigrantes en este distrito se caracterizan por tener unas reducidas dimensiones, una jornada larga y por la presencia de familiares empleados y de otros empleados del mismo origen geográfico que el del titular del negocio. Las tipologías predominantes de los comercios son: colmados, locutorios, envíos de remesas, bazares, carnicerías, minoristas y mayoristas de ropa, bares y restaurantes. Los titulares extranjeros mayoritarios son pakistaníes, indios, chinos, marroquíes, dominicanos, bangladeshis, filipinos y argelinos. El trabajo muestra la especialización geográfica por tipo de comercio y origen geográfico de los empresarios, la concentración de comercios por zonas y por calles y la correlación espacial entre comercio, residencia y centros

  5. SER BUEN DOCENTE ¿QUÉ OPINAN LOS ESTUDIANTES DE LA UNIVERSIDAD DE BARCELONA?

    Directory of Open Access Journals (Sweden)

    Rosa Sayós

    2014-07-01

    Full Text Available Abstract This study presents the opinion of the students of the University of Barcelona about the teaching skills that a good teacher should have. We conducted a survey through mobile devices among 1062 students in the first term of 2014. An Exploratory factor analysis (EFA gathers three main factors with eigenvalues greater than one, which explain 53.59% of variability: factor 1, methodology, teaching planning and good knowledge transmission; factor 2, interpersonal communication; factor 3, coordination of teaching team members. The reliability of the three factors is confirmed (α from .837 to .727. We did not observe significant differencesaccording to the area of knowledge and level of education for any teaching skill, although gender differences were detected in factors 1 and 2. Most students defined as good teaching qualities the following aspects: a reliable teaching plan, the use of appropriate teaching methods and having interpersonal skills. Outcomes showed significant coincidences by the comparison of the importance given by students and teachers to each teaching skill. The contributions of the students will be useful to redefine teaching skills and recognise indicators to assess teacher’s performance. Resumen Se presentan los resultados de una encuesta realizada entre los estudiantes de la Universidad de Barcelona (UB para conocer su opinión sobre las competencias que debería tener un buen docente. La encuesta se distribuyó a través de dispositivos móviles a un total de 1062 estudiantes. Un análisis factorial exploratorio (AFE agrupa los ítems de la encuesta en tres factores, con valores propios mayores que uno, que explican el 53.59% de la variabilidad: factor 1, metodología, planificación docente y buena transmisión de los contenidos; factor 2, comunicación interpersonal; factor 3, coordinación entre profesores. La fiabilidad de los tres factores es adecuada (α entre .837 y .727. No se observan diferencias estad

  6. Anatomía de la dispersión urbana en Barcelona

    Directory of Open Access Journals (Sweden)

    Iván Muñiz

    2013-01-01

    Full Text Available No existe una definición comúnmente aceptada de dispersión urbana (urban sprawl, de modo que la investigación aplicada ha trabajado con diferentes indicadores que pretenden a su vez capturar los distintos significados con que se ha dotado al término. En este trabajo se mide cómo ha evolucionado la dispersión de la población y del empleo de la Región Metropolitana de Barcelona (RMB entre 1986 y 2001. Las dimensiones exploradas se dividen en dos grupos: i forma urbana (desconcentración, baja densidad y discontinuidad y ii estructura urbana. A diferencia de algunos trabajos donde el policentrismo y el crecimiento lineal se presentan como dos formas de dispersión, en nuestro caso contraponemos la idea de expansión urbana estructurada (lineal o policéntrica con la de expansión urbana desestructurada (amorfa, caótica o aleatoria, equiparando esta última con la cuarta dimensión de la dispersión. Los resultados obtenidos indican que la población y el empleo de la RMB se han descentralizado de forma desconcentrada y la densidad residencial se ha reducido. Sin embargo, la RMB no ha crecido de forma discontinua ni desestructurada, sino todo lo contrario.There is no commonly accepted definition of urban sprawl, and therefore applied research has worked with different indicators aiming to grasp the diverse meanings assigned to the term. This study measures how the dispersion of population and employment in the Barcelona Metropolitan Region (BMR developed between 1986 and 2001. The dimensions that were investigated are divided into two groups. The first one involves dimensions of urban form (decentralization, low density and discontinuity, and the second, of urban structure. As opposed to some studies, where polycentrism and linear growth are presented as two forms of sprawl, in our case we contrast the idea of structured urban expansion (linear or poly-centric with de structured urban expansion (amorphous, chaotic or random, identifying

  7. The ecodesign and planning of sustainable neighbourhoods: the Vallbona case study (Barcelona

    Directory of Open Access Journals (Sweden)

    Farreny, R.

    2011-10-01

    Full Text Available Global sustainability is increasingly an issue of urban sustainability, being essential to encourage more benign trajectories of urbanisation. For this, there is need for a framework that could aid in the process of designing and redesigning (retrofitting cities. The aim of this paper is to present and describe the methodology of urban ecodesign, which is characterized by a systematic incorporation of environmental life cycle considerations into the design of urban systems. The paper presents a case study of neighbourhood ecodesign from the city of Barcelona (Vallbona neighbourhood. This practical experience shows that the inclusion of sustainability criteria at an early stage of the design and planning of urban systems is the best strategy for environmental protection.In addition; a methodological framework is described in order to provide planners with a structured way of designing urban settlements so as to move towards sustainable urban environments.

    La sostenibilidad global es cada vez más un tema de sostenibilidad urbana. Por este motivo, es necesario un marco de trabajo que pueda ayudar en el proceso de diseño y rediseño (rehabilitación de nuestras ciudades. El objetivo de este trabajo es presentar y describir la metodología de ecodiseño adaptada a los entornos urbanos, la cual se caracteriza por la incorporación sistemática de las consideraciones ambientales a lo largo de su ciclo de vida. El documento presenta un caso de estudio de ecodiseño del barrio de Vallbona (Barcelona. Esta experiencia demuestra que la inclusión de criterios de sostenibilidad en las etapas iniciales de diseño y planificación de los sistemas urbanos es la mejor estrategia para la prevención ambiental. Además, se presenta un marco metodológico con el fin de proporcionar a los planificadores una forma estructurada de diseño de los asentamientos urbanos que les permita avanzar hacia entornos urbanos más sostenibles.

  8. The disarticulated forms of neoliberal urbanism in the XXI century: the case of Barcelona Forum 2004

    Directory of Open Access Journals (Sweden)

    Angelino Mazza

    2012-12-01

    Full Text Available The contradictions within the policies of requalification of the City of Barcelona have become more evident in relation to some of the most recent urban transformations, as in the case of the project for the renewal of the Diagonal-Mar area; urban space where the Forum of Cultures 2004 has been held. The Forum turned into a failure, according to the paradigm of the criticisms, on the cultural and, above all, political (or marketing level; in its urban dimension, it has been the expression of the city that mires to the global insertion: it is a urban planning which is prevalently oriented to the external demand. The regeneration of the Diagonal-Mar has shown a scant consideration of social objectives, with the creation of spaces, where the concept of value of exchange predominates over the value of use. The actor (public and above all private investors, that participated to the redaction of the project of urban renewal of the area, produced a great propagandistic effort, presenting it as an open cultural initiative which can assume also the social criticisms.A lot of social and civil organization did not participate, and their proposals have not been accepted, and so, today, urban and social processes, rebound on the success or failure of the urban planning in an important area of the city. From that, what Borja (2005 defines the “urban malaise of Barcelona” starts, over the years of social and economic growth, the inhabitants of Barcelona fell a certain malaise, which is highlighted by the today’s crisis. The big urban projects do not generate any enthusiasm, citizens feel themselves progressively less owners of the own city, the architecture of the “great singular objects” does not represent the element of identity of the society. By scanning those urban imaginaries from a theoretical-conceptual viewpoint, which is formal and empiric, the question emerges, if the punctual urban planning operation of a sector could create evaluations

  9. Modern design and safety analysis of the University of Florida Training Reactor

    International Nuclear Information System (INIS)

    Highlights: • A new safety analysis of the University of Florida Training Reactor is presented. • This analysis uses modern codes and replaces the NRC approved analysis from 1982. • Reduction in engineering margin confirms that the UFTR is a negligible risk reactor. • Safety systems are not required to ensure that safety limits are not breached. • Negligible risk reactors are ideal for testing digital I&C equipment. - Abstract: A comprehensive series of neutronics and thermal hydraulics analyses were conducted to demonstrate the University of Florida Training Reactor (UFTR), an ARGONAUT type research reactor, as a negligible risk reactor that does not require safety-related systems or components to prevent breach of a safety limit. These analyses show that there is no credible UFTR accident that would result in major fuel damage or risk to public health and safety. The analysis was based on two limiting scenarios, whose extremity bound all other accidents of consequence: (1) the large step insertion of positive reactivity and (2) the release of fission products due to mechanical damage to a spent fuel plate. The maximum step insertion of positive reactivity was modeled using PARET/ANL software and shows a maximum peak fuel temperature of 283.2 °C, which is significantly below the failure limit of 530 °C. The exposure to the staff and general public was calculated for the worst-case fission product release scenario using the ORIGEN-S and COMPLY codes and was shown to be 6.5% of the annual limit. Impacts on reactor operations and an Instrumentation & Control System (I&C) upgrade are discussed

  10. Los procesos de exclusión social de las personas sin hogar en la ciudad de Barcelona

    Directory of Open Access Journals (Sweden)

    María Virginia Matulic-Domandzic

    2013-12-01

    Full Text Available En este artículo se abordan los procesos de exclusión social de las personas sin hogar en la ciudad de Barcelona a través de tres apartados. En primer lugar se realiza una aproximación a los procesos de exclusión social presentes en las sociedades europeas, seguidamente se centra la mirada en la dimensión conceptual de las personas sin hogar y en sus principales causas, para finalizar con unas conclusiones en donde se sintetizan los temas planteados, así como los retos de futuro que se presentan en este fenémeno. El contenido del artículo forma parte del trabajo de investigación que se está realizando sobre los procesos de inclusión de las personas sin hogar en Barcelona. Dicha investigación está vinculada al Doctorado "Educación y sociedad" de la Universidad de Barcelona, a través del Departamento de Trabajo Social y Servicios Sociales. El incremento del fenómeno del sinhogarismo responde a procesos macrosociales que han caracterizado a las sociedades posfordistas de las últimas décadas donde la fragilidad de las redes de apoyo y de los sistemas de proteción social tienen una importancia crucial.

  11. A geological model for the management of subsurface data in the urban environment of Barcelona and surrounding area

    Science.gov (United States)

    Vázquez-Suñé, Enric; Ángel Marazuela, Miguel; Velasco, Violeta; Diviu, Marc; Pérez-Estaún, Andrés; Álvarez-Marrón, Joaquina

    2016-09-01

    The overdevelopment of cities since the industrial revolution has shown the need to incorporate a sound geological knowledge in the management of required subsurface infrastructures and in the assessment of increasingly needed groundwater resources. Additionally, the scarcity of outcrops and the technical difficulty to conduct underground exploration in urban areas highlights the importance of implementing efficient management plans that deal with the legacy of heterogeneous subsurface information. To deal with these difficulties, a methodology has been proposed to integrate all the available spatio-temporal data into a comprehensive spatial database and a set of tools that facilitates the analysis and processing of the existing and newly added data for the city of Barcelona (NE Spain). Here we present the resulting actual subsurface 3-D geological model that incorporates and articulates all the information stored in the database. The methodology applied to Barcelona benefited from a good collaboration between administrative bodies and researchers that enabled the realization of a comprehensive geological database despite logistic difficulties. Currently, the public administration and also private sectors both benefit from the geological understanding acquired in the city of Barcelona, for example, when preparing the hydrogeological models used in groundwater assessment plans. The methodology further facilitates the continuous incorporation of new data in the implementation and sustainable management of urban groundwater, and also contributes to significantly reducing the costs of new infrastructures.

  12. La política nuclear espanyola: el caos del reactor nuclear Argos

    OpenAIRE

    Barca Salom, Francesc Xavier

    2000-01-01

    L’11 de juny de 1962 s’inaugurava a l’Escola Tècnica Superior d’Enginyeria Industrial de Barcelona un reactor nuclear experimental, que era batejat amb el nom mític d’Argos. Tota la premsa barcelonina se’n feu ressò i el presentava com el primer reactor construït íntegrament a Espanya per la Junta d’Energia Nuclear. La idea de dotar l’Escola d’un reactor nuclear havia nascut, però, set anys abans, precisament en el mateix moment de la creació de la Càtedra Ferran Tallada d’enginyeria...

  13. Biomedical practices from a patient perspective. Experiences of Polish female migrants in Barcelona, Berlin and London.

    Science.gov (United States)

    Main, Izabella

    2016-08-01

    This paper focuses on the diversity in patients' experience of bio-medicine and contrasts it with the normative view characteristic of health professionals. Ethnographic fieldwork among Polish migrant women in London, Barcelona and Berlin included interviews about their experiences with local healthcare and health professionals. Themes drawn from the narratives are differences between the cities in terms of communication between patients and health professionals, respect for patients' choices and dignity, attitudes to pregnancy and birth (different levels of medicalization), and paediatric care. It is argued that patients continuously negotiate among their own views and expectations based on previous experiences and knowledge from personal communication; internet forums and publications; and the offer of medical services in the countries of their settlement. Patients experience pluralism of therapeutic traditions within and outside bio-medicine. In turn, representatives of bio-medicine are rarely aware of other medical practices and beliefs and this leads to various misunderstandings. By highlighting the pluralism of medical practices in European countries and the increasing mobility of patients, this case study has useful implications for medical anthropologists and health professionals in a broader Western context, such as raising sensitivity to different communication strategies and a diversity of curing traditions and expectations. PMID:27258327

  14. Natural and anthropogenic radionuclides in airborne particulate samples collected in Barcelona (Spain)

    Energy Technology Data Exchange (ETDEWEB)

    Valles, I. [Institut de Tecniques Energetiques, Universitat Politecnica de Catalunya, Diagonal 647, 08028 Barcelona (Spain)], E-mail: isabel.valles@upc.edu; Camacho, A.; Ortega, X.; Serrano, I.; Blazquez, S.; Perez, S. [Institut de Tecniques Energetiques, Universitat Politecnica de Catalunya, Diagonal 647, 08028 Barcelona (Spain)

    2009-02-15

    Results for naturally occurring {sup 7}Be, {sup 210}Pb, {sup 40}K, {sup 214}Bi, {sup 214}Pb, {sup 212}Pb, {sup 228}Ac and {sup 208}Tl and anthropogenic {sup 137}Cs in airborne particulate matter in the Barcelona area during the period from January 2001 to December 2005 are presented and discussed. The {sup 212}Pb and {sup 208}Tl, {sup 214}Bi and {sup 214}Pb, {sup 7}Be and {sup 210}Pb radionuclide levels showed a significant correlation with each other, with correlation coefficients of 0.99, 0.78 and 0.69, respectively, suggesting similar origin/behaviour of these radionuclides in the air. Caessium-137 and Potassium-40 were transported to the air as resuspended particle from the soil. The {sup 7}Be and {sup 210}Pb concentrations showed similar seasonal variations, with a tendency for maximum concentrations during the summer months. An inverse relationship was observed between the {sup 7}Be, {sup 210}Pb, {sup 40}K and {sup 137}Cs concentrations and weekly rainfall, indicating washout of atmospheric aerosols carrying these radionuclides.

  15. Hepatic resection beyond barcelona clinic liver cancer indication: When and how

    Science.gov (United States)

    Garancini, Mattia; Pinotti, Enrico; Nespoli, Stefano; Romano, Fabrizio; Gianotti, Luca; Giardini, Vittorio

    2016-01-01

    Hepatocellular carcinoma (HCC) is the main common primary tumour of the liver and it is usually associated with cirrhosis. The barcelona clinic liver cancer (BCLC) classification has been approved as guidance for HCC treatment algorithms by the European Association for the Study of Liver and the American Association for the Study of Liver Disease. According to this algorithm, hepatic resection should be performed only in patients with small single tumours of 2-3 cm without signs of portal hypertension (PHT) or hyperbilirubinemia. BCLC classification has been criticised and many studies have shown that multiple tumors and large tumors, as wide as those with macrovascular infiltration and PHT, could benefit from liver resection. Consequently, treatment guidelines should be revised and patients with intermediate/advanced stage HCC, when technically resectable, should receive the opportunity to be treated with radical surgical treatment. Nevertheless, the surgical treatment of HCC on cirrhosis is complex: The goal to be oncologically radical has always to be balanced with the necessity to minimize organ damage. The aim of this review was to analyze when and how liver resection could be indicated beyond BCLC indication. In particular, the role of multidisciplinary approach to assure a proper indication, of the intraoperative ultrasound for intra-operative restaging and resection guidance and of laparoscopy to minimize surgical trauma have been enhanced. PMID:27099652

  16. Community health workers improve contact tracing among immigrants with tuberculosis in Barcelona

    Directory of Open Access Journals (Sweden)

    Ospina Jesús

    2012-03-01

    Full Text Available Abstract Background The important increase in immigration during recent years has changed the epidemiology and control strategies for tuberculosis (TB in many places. This study evaluates the effectiveness of intervention with community health workers (CHW to improve contact tracing among immigrants. Methods The study included all TB cases detected by the Barcelona TB Program from 2000 to 2005 and compared a period without CHW intervention (2000-2002 to a period with CHW intervention (2003-2005. The influence on contact tracing of sex, age, hospital of diagnosis, district of residence, birthplace, HIV, homeless and CHW intervention was analysed by logistic regression. Odds ratio (OR and 95% confidence intervals (CI were calculated. Results 960 foreign born TB cases were detected, 388 in the intervention period. Contact tracing was performed on 65,7% of 201 smear-positive cases during the pre-intervention period compared to 81.6% of 152 smear-positive TB cases during the intervention period (p Conclusions The effectiveness of contact tracing for TB control in areas with high immigration can be improved by incorporating CHWs who act as translators, cultural mediators and facilitators who accompany cases and contacts through treatment and follow-up.

  17. Hola!Barcelona!Hola!3GSM!3GSM World Congress 2006记行

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    2006年2月13日~16日,全球移动通信业界一年一度最大的盛会3GSM World Congress 2006(以下简称3G大会)在西班牙巴塞罗那隆重召开。在过去,我们只能从网上方方面面的报道,去领略这个对于全球移动通信业具有非比寻常意义的大会,而在2006年,《新潮电子》记者得到了亲赴这一盛典的机会,从而为各位关注移动通信的朋友们带来最具临场感的第一手报道。站在会场前的广场上,面对气势宏伟的展厅,我们由衷地从心中发出一声呼喊:“Hola!Barcelona!Hola!3GSM!”(Hola为西班牙文,意即英文的Hello)。

  18. Diversity Management Among Small Shops in Barcelona: A Case of Community Intercultural Mediation

    Directory of Open Access Journals (Sweden)

    Mercé Zegrí

    2009-08-01

    Full Text Available The setting up of small shops by foreign people involves a number of difficulties and challenges with respect to how it fits in certain districts. These issues have been tackled from the view of intercultural mediation. This kind of intervention focuses on relationships and communication among shopkeepers by highlighting their common interests. Intervention also includes making associative networks acknowledge and adapt to new realities. This paper describes a process of intervention focused on community intercultural mediation carried out in small shops in a district of Barcelona. First, most significant results of the diagnosis stage are shown concerning the speech and relationships of main agents along with “conflict” analysis. Then a detailed mediation intervention is described that was carried out with a group of shopkeepers called “shop promoting group”. Finally, bearing in mind their high participative and transformational potential, some general appraisals are made with respect to the impact of this type of processes and their continuity and sustainability.

  19. PREFACE: Proceedings of the 7th International LISA Symposium, Barcelona, Spain, 16-20 June 2008

    Science.gov (United States)

    Lobo, Alberto; Sopuerta, Carlos F.

    2009-07-01

    In June 2006 the LISA International Science Team (LIST) accepted the bid presented by the Institut d'Estudis Espacials de Catalunya (IEEC) to host the 7th International LISA Symposium. This was during its 11th meeting at the University of Maryland, just before the 6th edition of the Symposium started in NASA's Goddard Space Flight Center. The 7th International LISA Symposium took place at the city of Barcelona, Spain, from 16-20 June 2008, in the premises of CosmoCaixa, a modern Science Museum located in the hills near Tibidabo. Almost 240 delegates registered for the event, a record breaking figure compared to previous editions of the Symposium. Many of the most renowned world experts in LISA, Gravitational Wave Science, and Astronomy, as well as Engineers, attended LISA 7 and produced state-of-the-art presentations, while everybody benefited from the opportunity to have live discussions during the week in a friendly environment. The programme included 31 invited plenary lectures in the mornings, and 8 parallel sessions in the afternoons. These were classified into 7 major areas of research: LISA Technology, LISA PathFinder, LISA PathFinder Data Analysis, LISA Data Analysis, Gravitational Wave sources, Cosmology and Fundamental Physics with LISA and Other Gravitational Wave Detectors. 138 abstracts for communications were received, of which a selection was made by the session convenors which would fit time constraints. Up to 63 posters completed the scientific programme. More details on the programme, including some of the talks, can be found at the Symposium website: http://www.ice.cat/research/LISA_Symposium. There was however a remarkable add-on: Professor Clifford Will delivered a startling presentation to the general public, who completely filled the Auditori—the main Conference Room, 320 seats—and were invited to ask questions to the speaker who had boldly guided them through the daunting world of Black Holes, Waves of Gravity, and other Warped Ideas of

  20. Urban air quality comparison for bus, tram, subway and pedestrian commutes in Barcelona.

    Science.gov (United States)

    Moreno, Teresa; Reche, Cristina; Rivas, Ioar; Cruz Minguillón, Maria; Martins, Vânia; Vargas, Concepción; Buonanno, Giorgio; Parga, Jesus; Pandolfi, Marco; Brines, Mariola; Ealo, Marina; Sofia Fonseca, Ana; Amato, Fulvio; Sosa, Garay; Capdevila, Marta; de Miguel, Eladio; Querol, Xavier; Gibbons, Wes

    2015-10-01

    Access to detailed comparisons in air quality variations encountered when commuting through a city offers the urban traveller more informed choice on how to minimise personal exposure to inhalable pollutants. In this study we report on an experiment designed to compare atmospheric contaminants inhaled during bus, subway train, tram and walking journeys through the city of Barcelona. Average number concentrations of particles 10-300 nm in size, N, are lowest in the commute using subway trains (N5.0×10(4) cm(-3)), with extreme transient peaks at busy traffic crossings commonly exceeding 1.0×10(5) cm(-3) and accompanied by peaks in Black Carbon and CO. Subway particles are coarser (mode 90 nm) than in buses, trams or outdoors (1200 ppm in crowded buses and trains. There are also striking differences in inhalable particle chemistry depending on the route chosen, ranging from aluminosiliceous at roadsides and near pavement works, ferruginous with enhanced Mn, Co, Zn, Sr and Ba in the subway environment, and higher levels of Sb and Cu inside the bus. We graphically display such chemical variations using a ternary diagram to emphasise how "air quality" in the city involves a consideration of both physical and chemical parameters, and is not simply a question of measuring particle number or mass. PMID:26277386

  1. Salivary cotinine concentrations in daily smokers in Barcelona, Spain: a cross-sectional study

    Directory of Open Access Journals (Sweden)

    Pascual José A

    2009-09-01

    Full Text Available Abstract Background Characterizing and comparing the determinant of cotinine concentrations in different populations should facilitate a better understanding of smoking patterns and addiction. This study describes and characterizes determinants of salivary cotinine concentration in a sample of Spanish adult daily smoker men and women. Methods A cross-sectional study was carried out between March 2004 and December 2005 in a representative sample of 1245 people from the general population of Barcelona, Spain. A standard questionnaire was used to gather information on active tobacco smoking and passive exposure, and a saliva specimen was obtained to determine salivary cotinine concentration. Two hundred and eleven adult smokers (>16 years old with complete data were included in the analysis. Determinants of cotinine concentrations were assessed using linear regression models. Results Salivary cotinine concentration was associated with the reported number of cigarettes smoked in the previous 24 hours (R2 = 0.339; p R2 = 0.386; p Conclusion This study shows that salivary cotinine concentration is significantly associated with the number of cigarettes smoked and sex, but not with other smoking-related variables.

  2. Octupole deformation properties of the Barcelona-Catania-Paris energy density functionals

    CERN Document Server

    Robledo, L M; Schuck, P; Viñas, X

    2010-01-01

    We discuss the octupole deformation properties of the recently proposed Barcelona-Catania-Paris (BCP) energy density functionals for two sets of isotopes, those of radium and barium, where it is believed that octupole deformation plays a role in the description of the ground state. The analysis is carried out in the mean field framework (Hartree- Fock- Bogoliubov approximation) by using the axially symmetric octupole moment as a constraint. The main ingredients entering the octupole collective Hamiltonian are evaluated and the lowest lying octupole eigenstates are obtained. In this way we restore, in an approximate way, the parity symmetry spontaneously broken by the mean field and also incorporate octupole fluctuations around the ground state solution. For each isotope the energy of the lowest lying $1^{-}$state and the $B(E1)$ and $B(E3)$ transition probabilities have been computed and compared to both the experimental data and the results obtained in the same framework with the Gogny D1S interaction, which...

  3. [Contribution to the knowledge of intestinal protozoa infestation in the hospital population of Barcelona (author's transl)].

    Science.gov (United States)

    Portús, M; Prats, G

    1981-03-10

    This report concerns the analysis of 650 fecal samples submitted for parasitic investigation to the Microbiology Service of the Hospital de la Santa Creu i Sant Pau of Barcelona. The samples were analyzed by the technique of fixation and direct observation of Sapero and Lawless (MIFD), and with the biphasic concentration method of Blagg et al (MIFC). Intestinal protozoa were detected in 183 samples (28.2%), with a total of 232 protozoosis uncovered. The specific analysis gave the following results: Giardia lamblia, 10.9%; Dientamoeba fragilis, 7.8%; Entamoeba coli, 4.6%; Endolimax nana, 4.5%; Entamoeba hartmanni, 4.0%; Iodamoeba buetschlii, 2.9%; Entamoeba histolytica, 0.7%; Chilomastix mesnili, 0.2%; Trichomonas hominis, 0.2%. The results obtained by the two methods have been compared, observing the highest number of positive results with MIFD technique. Especial mention is made of the higher incidence of Dientamoeba fragilis in samples positive for Oxyuris further studies being needed to establish the basis for the relationship between both species of parasites. PMID:7206888

  4. SMOS validation using SSS data from Barcelona World Race and Argo profilers

    Science.gov (United States)

    Umbert, M.; Ballabrera, J.; Fernandez, P.; Salat, J.; Salvador, J.

    2012-04-01

    The organisers of the Barcelona World Race (BWR), the Institute of Marine Sciences (ICM-CSIC) and the Maritime Catalan Forum (FMC) agreed on equiping the FMC boat, participating in the race, with a SeaBird MiniCTD. The idea was for the first time to explore how such oceanic races could help to monitor surface temperature and salinity all around the world ocean in real time. The boat spent 112 days to complete the rond trip, sending 12-30 real-time samples/day via ARGOS satellites, using a transmitter developed at the ICM. Data was also stored in the instrument, at 192 samples/day to allow further final global analyses. In the SMOS (Soil Moisture and Ocean Salinity) satellite mission processing chain, sea surface salinity (SSS) values are retrieved from brightness temperature data at level 2 (L2). Global maps of SSS are being generated at level 3 (L3) using spatial and temporal weighted averages. Finally, improved representations of the SSS field are obtained at level 4 (L4) where satellite data is blended with data from other sensors. In the present study, validation of L2, L3 and L4 products using data from BWR and ARGO buoys is presented, covering the race period from January to April 2011. Differences between these two sets of data are also investigated as the uppermost robust measurements from Argo profilers have larger depths than the ones associated to the BWR boat.

  5. Biomedical practices from a patient perspective. Experiences of Polish female migrants in Barcelona, Berlin and London.

    Science.gov (United States)

    Main, Izabella

    2016-08-01

    This paper focuses on the diversity in patients' experience of bio-medicine and contrasts it with the normative view characteristic of health professionals. Ethnographic fieldwork among Polish migrant women in London, Barcelona and Berlin included interviews about their experiences with local healthcare and health professionals. Themes drawn from the narratives are differences between the cities in terms of communication between patients and health professionals, respect for patients' choices and dignity, attitudes to pregnancy and birth (different levels of medicalization), and paediatric care. It is argued that patients continuously negotiate among their own views and expectations based on previous experiences and knowledge from personal communication; internet forums and publications; and the offer of medical services in the countries of their settlement. Patients experience pluralism of therapeutic traditions within and outside bio-medicine. In turn, representatives of bio-medicine are rarely aware of other medical practices and beliefs and this leads to various misunderstandings. By highlighting the pluralism of medical practices in European countries and the increasing mobility of patients, this case study has useful implications for medical anthropologists and health professionals in a broader Western context, such as raising sensitivity to different communication strategies and a diversity of curing traditions and expectations.

  6. Sustainability Commitment, New Competitors’ Presence, and Hotel Performance: The Hotel Industry in Barcelona

    Directory of Open Access Journals (Sweden)

    Juan Pedro Aznar

    2016-08-01

    Full Text Available The hospitality industry is facing major challenges, among them the new competition from novel forms of supply in the sharing economy. Airbnb, Homeaway, and Niumba, among other websites offering accommodations, are having an important impact in the sector, changing existing conditions and the market for the traditional hospitality industry. In this context, a strategy based in differentiation can help to prevent drops in revenues and profitability. The main objective of this paper is analyse if commitment towards sustainability has a positive impact on financial performance and can be considered a positive strategy in this new environment. The empirical data refer to a sample of hotels in Barcelona, one of the most important tourist cities in Europe. Our results suggest that there is no clear relationship between sustainability and better financial performance; however, sustainability commitment is associated with a minimum size, which can also have positive effects in terms of economies of scale and finally affect profitability. Hotels more committed to environmental issues are located in areas with a lower density of Airbnb apartments, and this geographical distribution can be more positive than a situation of massive tourist concentration in specific areas with negative externalities for neighbours.

  7. Sonochemical Reactors.

    Science.gov (United States)

    Gogate, Parag R; Patil, Pankaj N

    2016-10-01

    Sonochemical reactors are based on the generation of cavitational events using ultrasound and offer immense potential for the intensification of physical and chemical processing applications. The present work presents a critical analysis of the underlying mechanisms for intensification, available reactor configurations and overview of the different applications exploited successfully, though mostly at laboratory scales. Guidelines have also been presented for optimum selection of the important operating parameters (frequency and intensity of irradiation, temperature and liquid physicochemical properties) as well as the geometric parameters (type of reactor configuration and the number/position of the transducers) so as to maximize the process intensification benefits. The key areas for future work so as to transform the successful technique at laboratory/pilot scale into commercial technology have also been discussed. Overall, it has been established that there is immense potential for sonochemical reactors for process intensification leading to greener processing and economic benefits. Combined efforts from a wide range of disciplines such as material science, physics, chemistry and chemical engineers are required to harness the benefits at commercial scale operation.

  8. Reactor container

    International Nuclear Information System (INIS)

    A reactor container has a suppression chamber partitioned by concrete side walls, a reactor pedestal and a diaphragm floor. A plurality of partitioning walls are disposed in circumferential direction each at an interval inside the suppression chamber, so that independent chambers in a state being divided into plurality are formed inside the suppression chamber. The partition walls are formed from the bottom portion of the suppression chamber up to the diaphragm floor to isolate pool water in a divided state. Operation platforms are formed above the suppression chamber and connected to an access port. Upon conducting maintenance, inspection or repairing, a pump is disposed in the independent chamber to transfer pool water therein to one or a plurality of other independent chambers to make it vacant. (I.N.)

  9. Analysis of the radiometric survey during the Argonauta reactor operation; Analise do levantamento radiometrico durante operacao do reator Argonauta

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Eara de S.L.; Cardozo, Katia K.M.; Silva, Joao Carlos P.; Santos, Joao Regis dos, E-mail: esluz@ien.gov.br, E-mail: cardozo@ien.gov.br, E-mail: jcarlos@ien.gov.br, E-mail: regis@ien.gov.br [Instituto de Engenharia Nuclear (CNEN-IEN/RJ), Rio de Janeiro - RJ (Brazil)

    2013-07-01

    The Argonaut reactor at the Institute of Nuclear Engineering-IEN/CNEN, operates normally, the powers between 1.7 and 340 W on neutrongraphy procedures, production of radionuclides and experimental reactor physics lessons to postgraduate courses. The doses from neutrons and gamma radiation are measured when the reactor is critical, inside the reactor hall and surrounding regions. A study of the data obtained was performed to evaluate the daily need of this survey in the reactor hall. Taking into account the principle ALARA, which aims to optimize and minimize the dose received by the individual, we propose, in this work, through an analysis of the acquired data in occupational radiometric surveys, a reformulation of the area monitoring routine practiced by the team of radiological protection of the Institute of Nuclear Engineering - IEN/CNEN-RJ, whereas other monitoring routines regarding the radiological protection are also applied in the routine of the reactor. The operations under review occurred with the reactor operating 340 W power at intervals of 60, 120 and 180 minutes, in monitoring points in controlled areas, supervised and free. The results showed significant dose values in the output of the J-Channel 9 when the operation occurs with this open. With 180 minutes of operation, the measured values of dose rate were lower than the values at 60 min and 120 operations min. At the point in the supervised area, offsite to the reactor hall, situated in the direction of the J-Channel 9, the value reduces more than 14% in any operating time in relation to the dose rate measured at the point opposite the canal. There is a 50% reduction in the dose rates for operations with and J-9 closed. The results suggest a new frequency of radiometric survey whose mode of operation is maintained in similar conditions, since combined with other relevant practices of radiation protection.

  10. NEUTRONIC REACTORS

    Science.gov (United States)

    Anderson, J.B.

    1960-01-01

    A reactor is described which comprises a tank, a plurality of coaxial steel sleeves in the tank, a mass of water in the tank, and wire grids in abutting relationship within a plurality of elongated parallel channels within the steel sleeves, the wire being provided with a plurality of bends in the same plane forming adjacent parallel sections between bends, and the sections of adjacent grids being normally disposed relative to each other.

  11. Negative mood states and related factors in a sample of adolescent secondary-school students in Barcelona (Spain) Estados de ánimo negativos y los factores relacionados en una muestra de adolescentes de enseñanza secundaria de Barcelona

    OpenAIRE

    Ahonen, Emily Q; Manel Nebot; Emmanuel Giménez

    2007-01-01

    Introduction: Poor mental health is a common problem in adolescence. Little information is available, however, about the factors influencing negative mood states in otherwise healthy adolescents. We aimed to describe the mood states and related factors in a sample of adolescents in the city of Barcelona (Spain). Methods: We administered a health survey to a sample of 2,727 students from public, subsidized, and private schools in Barcelona, aged approximately 14, 16, and 18 years old. To analy...

  12. GPR velocity and frequency analysis in industrial archaeology. Study of the EUETIB buildings (Barcelona, Sapin)

    Science.gov (United States)

    Pérez Gracia, V.; González Drigo, R.; Vendrell, D.

    2003-04-01

    The Ground-penetrating radar (GPR) analysis of some modernist buildings of the Technical Industrial School of Barcelona allow us to obtain valuable information of the underground constructions, corresponding to ancient structures of the preceding factory. The actual school is building on the modernist industrial complex. Many changes in the structure were carried out to adapt the structure to its actual use. The obtained GPR data was compared with the information, documents and photographies from the historical archives of the Diputación of Barcelona (Spain). To obtain accurate results and right interpretations, velocity analysis is performed in the different studied areas. The velocity values are used to convert accurately the two-way travel time into depth. The aim of those velocity estimations is obtain the minimum error in the final interpretations of the profiles. The velocity analysis is carried out using two different methods: calculating velocity using the reflection in anomalous bodies into the medium at a known depth, and calculating velocity from the hyperbolic events of the radargrams, caused by finite anomalies of the medium. The present tubes and conductions which are in use nowadays, have known depths. Then, velocity is obtained from the two-way travel time obtained for the reflected wave in that anomalous body. This method allow us to known velocities in areas where those elements are presented, which are mainly in the ground under the streets of the school. The reflection produced in unknown bodies which have finite dimensions, is obtained as an hyperbolic event. The averaged velocity of the medium over these bodies is calculated from the equation of the hyperbola. This method was used mainly where known elements were not presents in the ground. These areas are mainly the buildings of the school. Experimental velocities are understand as the averaged velocity of ray-path. The obtained values are applied to each area, to calculate depths of the

  13. Vertical and horizontal variability of PM10 source contributions in Barcelona during SAPUSS

    Science.gov (United States)

    Brines, Mariola; Dall'Osto, Manuel; Amato, Fulvio; Cruz Minguillón, María; Karanasiou, Angeliki; Alastuey, Andrés; Querol, Xavier

    2016-06-01

    During the SAPUSS campaign (Solving Aerosol Problems by Using Synergistic Strategies) PM10 samples at 12-hour resolution were simultaneously collected at four monitoring sites located in the urban agglomerate of Barcelona (Spain). A total of 221 samples were collected from 20 September to 20 October 2010. The Road Site (RS) site and the Urban Background (UB) site were located at street level, whereas the Torre Mapfre (TM) and the Torre Collserola (TC) sites were located at 150 m a.s.l. by the sea side within the urban area and at 415 m a.s.l. 8 km inland, respectively. For the first time, we are able to report simultaneous PM10 aerosol measurements, allowing us to study aerosol gradients at both horizontal and vertical levels. The complete chemical composition of PM10 was determined on the 221 samples, and factor analysis (positive matrix factorisation, PMF) was applied. This resulted in eight factors which were attributed to eight main aerosol sources affecting PM10 concentrations in the studied urban environment: (1) vehicle exhaust and wear (2-9 µg m-3, 10-27 % of PM10 mass on average), (2) road dust (2-4 µg m-3, 8-12 %), (3) mineral dust (5 µg m-3, 13-26 %), (4) aged marine (3-5 µg m-3, 13-20 %), (5) heavy oil (0.4-0.6 µg m-3, 2 %), (6) industrial (1 µg m-3, 3-5 %), (7) sulfate (3-4 µg m-3, 11-17 %) and (8) nitrate (4-6 µg m-3, 17-21 %). Three aerosol sources were found to be enhanced at the ground levels (confined within the urban ground levels of the city) relative to the upper levels: (1) vehicle exhaust and wear (2.8 higher), (2) road dust (1.8 higher) and (3) local urban industries/crafts workshops (1.6 higher). Surprisingly, the other aerosol sources were relatively homogeneous at both horizontal and vertical levels. However, air mass origin and meteorological parameters also played a key role in influencing the variability of the factor concentrations. The mineral dust and aged marine factors were found to be a mixture of natural and

  14. Monitoring Sea Level by Tide Gauges and GPS at Barcelona and Estartit Harbours

    Science.gov (United States)

    Martinez Benjamin, J. J.; Gili, J.; Lopez, R.; Tapia, A.; Bosch, E.; Perez, B.; Pros, F.

    2012-04-01

    Sea level is an environmental variable which is widely recognised as being important in many scientific disciplines as a control parameter for coastal dynamical processes or climate processes in the coupled atmosphere-ocean systems, as well as engineering applications. A major source of sea-level data are the national networks of coastal tide gauges, in Spain belonging to different institutions as the Instituto Geográfico Nacional (IGN), Puertos del Estado (PE), Instituto Hidrográfico de la Marina (IHM), etc. The tide gauge of l'Estartit is a traditional floating gauge placed 21 years ago and has an accuracy of ± 2 mm. Since 1996, l'Estartit tide gauge has been co-located with geodetic techniques (GPS measurements of XU, Utilitary Network, and XdA, Levelling Network,) and it is tied to the SPGIC (Integrated Geodetic Positioning System of Catalonia) project of the Cartographic Institute of Catalunya (ICC). In 2006, due to the work for the expansion of the harbour, the tide gauge had to be moved. Before the work started, appropiate GPS measurements were carried out in order to ensure the connection of the tide gauge data. During October 2006 and May 2008, the tide gauge was inactive and it has been moved on to a new location inside the harbour. In June 2008, new GPS and levelling measures have been done in order to tie the new location into SPGIC project and to co-locate old data respect the new one. Although l'Estartit does not have a GPS permanent station, it is possible to build a virtual one from the service "CATNET web" of the ICC. "CATNET web" is a data distribution system of a virtual GPS permanent station via web. From the coordinates where you want to place the virtual station, the time interval and the measurement rate, the system generates a RINEX file under the requested conditions. At Barcelona harbour there is one MIROS radar tide gauge belonging to Puertos del Estado (Spanish Harbours). It is placed at the dock 140 of the ENAGAS Building.The radar

  15. METRIC SURVEY OF THE MONUMENT OF QUEEN ELISENDA'S TOMB IN THE MONASTERY OF PEDRALBES, BARCELONA

    Directory of Open Access Journals (Sweden)

    M. A. Núñez

    2012-09-01

    Full Text Available When an urban development is planned the cartography of this territory is necessary, in the same way before starting a project to rehabilitate a monument the graphic information about it has to be available. At present, different techniques are available which allow to obtain three-dimensional models with a different accuracy level and runtimes.This paper shows the work carried out to obtain the graphic information and three-dimensional models that are necessary for the rehabilitation project of the tomb of Queen Elisenda in the Monastery of Pedralbes, Barcelona (Spain. This monument has the peculiarity of being symmetrical about the wall separating monastery church and the cloister. To do this, different techniques have been used that allow us to obtain an accurate model and as complete as possible, for the analysis of the construction process of the monument. In order to achieve the complete architectural survey the integration of laser scanning and photogrammetric data, and CAD models has been necessary. Due to the detail of the sculptures and the Queen’s sarcophagus two sensors, with different resolution, range and accuracy, have been used to obtain the laser scanning data. Stereo pairs have been taken to obtain the 3D model of these elements to complete the model and obtain an ortophotography.In this way, a comparative analysis of both techniques has been carried out, in order to decide which one is the suitable for certain application. This investigation has been restricted to the tomb, in the two symmetrical parts of the monument.

  16. Everyday politics, social practices and movement networks: daily life in Barcelona's social centres.

    Science.gov (United States)

    Yates, Luke

    2015-06-01

    The relations between everyday life and political participation are of interest for much contemporary social science. Yet studies of social movement protest still pay disproportionate attention to moments of mobilization, and to movements with clear organizational boundaries, tactics and goals. Exceptions have explored collective identity, 'free spaces' and prefigurative politics, but such processes are framed as important only in accounting for movements in abeyance, or in explaining movement persistence. This article focuses on the social practices taking place in and around social movement spaces, showing that political meanings, knowledge and alternative forms of social organization are continually being developed and cultivated. Social centres in Barcelona, Spain, autonomous political spaces hosting cultural and educational events, protest campaigns and alternative living arrangements, are used as empirical case studies. Daily practices of food provisioning, distributing space and dividing labour are politicized and politicizing as they unfold and develop over time and through diverse networks around social centres. Following Melucci, such latent processes set the conditions for social movements and mobilization to occur. However, they not only underpin mobilization, but are themselves politically expressive and prefigurative, with multiple layers of latency and visibility identifiable in performances of practices. The variety of political forms - adversarial, expressive, theoretical, and routinized everyday practices, allow diverse identities, materialities and meanings to overlap in movement spaces, and help explain networks of mutual support between loosely knit networks of activists and non-activists. An approach which focuses on practices and networks rather than mobilization and collective actors, it is argued, helps show how everyday life and political protest are mutually constitutive. PMID:25597324

  17. PREVENCIÓN INDICADA DEL CONSUMO PROBLEMÁTICO DE DROGAS EN ADOLESCENTES DE BARCELONA

    Directory of Open Access Journals (Sweden)

    Anna M Guitart

    2012-01-01

    Full Text Available Fundamentos: El Servicio de Orientación sobre Drogas (SOD de Barcelona ofrece un programa de Información y Orientación (PIO para adolescentes y un Programa de Medidas Alternativas (PMA a menores sancionados por consumo/tenencia de drogas en la vía pública. El objetivo de este trabajo es describirlos y comparar los perfiles de los usuarios en cada uno de ellos. Métodos: Estudio transversal descriptivo de 1.010 personas atendidas en ambos programas durante el período 2008-2010, con cribado de patología psiquiátrica y adicción e intervención breve extendida en consumidores sin indicios de patología. Se compararon los perfiles de los usuarios y se calcularon las tasas de uso del PMA por edad. Resultados: El cannabis motivó el 89,9% de entradas en el Servicio. Entre los usuarios del PIO el consumo de alto riesgo de cannabis fue del 13,1% y el consumo de riesgo de alcohol del 11,3%. Entre los usuarios del PMA los consumos fueron del 8,9 y 4% respectivamente. El 38% de los usuarios del PIO y el 6% de los del PMA se derivaron a atención especializada por presentar criterios de abuso o dependencia a alguna sustancia psicoactiva u otro trastorno psiquiátrico. Conclusiones: Los adolescentes atendidos en PMA hacen un consumo de cannabis (y en muchos casos de alcohol de riesgo bajo o moderado comparados con los del PIO. Además del valor de la intervención preventiva indicada, los programas facilitan la detección precoz de consumos problemáticos o trastornos mentales incipientes y su derivación.

  18. Impact of immigration on the cost of emergency visits in Barcelona (Spain

    Directory of Open Access Journals (Sweden)

    García Oscar

    2007-01-01

    Full Text Available Abstract Background The impact of immigration on health services utilisation has been analysed by several studies performed in countries with lower levels of immigration than Spain. These studies indicate that health services utilisation is lower among the immigrant population than among the host population and that immigrants tend to use hospital emergency services at the expense of primary care. We aimed to quantify the relative over-utilisation of emergency services in the immigrant population. Methods Emergency visits to Hospital del Mar in Barcelona in 2002 and 2003 were analysed. The country of origin, gender, age, discharge-related circumstances (hospital admission, discharge to home, or death, medical specialty, and variable cost related to medical care were registered. Immigrants were grouped into those from high-income countries (IHIC and those from low-income countries (ILIC and the average direct cost was compared by country of origin. A multivariate linear mixed model of direct costs was adjusted by country of origin (classified in five groups and by the individual variables of age, gender, hospital admission, and death as a cause of discharge. Medical specialty was considered as a random effect. Results With the exception of gynaecological emergency visits, costs resulting from emergency visits by both groups of immigrants were lower than those due to visits by the Spanish-born population. This effect was especially marked for emergency visits by adults. Conclusion Immigrants tend to use the emergency department in preference to other health services. No differences were found between IHIC and ILIC, suggesting that this result was due to the ease of access to emergency services and to lack of knowledge about the country's health system rather than to poor health status resulting from immigrants' socioeconomic position. The use of costs as a variable of complexity represents an opportunistic use of a highly exhaustive registry

  19. Imaging the Shallow Subsurface for a New Underground Subway Line in Barcelona

    Science.gov (United States)

    Marti, D.; Flecha, I.; Palomeras, I.; Vazquez-Sune, E.; Font-Capo, J.; Carbonell, R.; Perez-Estaun, A.

    2006-12-01

    A detailed characterization of the shallow subsurface by seismic techniques has been used to aid horizontal drilling of tunnels for a new subway line in Barcelona (Spain). Seismic data acquisition in densely populated cities is very difficult. The street layout determines the geometry of the seismic data acquisition experiments. The instrumentation (source and receivers) can not always be located on the surface projection of the tunnel trace, therefore, pseudo 3D acquisition is required deploying the instrumentation were it is possible. Furthermore, the shallow subsurface features extremely heterogeneous "weathered" layer of variable thickness (building foundations, sewage system, water supply conductions, etc), and the background noise is very high (car traffic, electricity lines, etc). Relatively old cities also lack a detailed geological control of the subsurface. The seismic data was acquired using as source a 8 s long Vibroseis sweep which provided relatively good S/N ratio. The shallow subsurface featured an extremely heterogeneous weathered layer characterized by very low seismic velocities (1000-1300 m/s) of variable thickness that made difficult to interpret the seismic reflection images at target depth. The first-arrival seismic tomography revealed as a key tool to clearly differentiate the different rock volumes characterized by different physical properties, especially the contact between the weathered layer and the more competent rock. Several high velocity anomalies (up to 5500 m/s) were observed at tunnel depth that were correlated with sub vertical porphyric dykes. This were surrounded by low velocity anomalies that correspond to fault systems that cut and displace dykes. The tomographic velocity models also provide a new image of an important Miocene fault, quite different to the previous geological section derived from the core interpretation.

  20. El tabaco en los establecimientos de restauración y hostelería: estudio observacional en Barcelona, 2008 Smoking in the hospitality sector: an observational study in Barcelona (Spain), 2008

    OpenAIRE

    Joan R. Villalbí; Lucía Baranda; M. José López; Manel Nebot

    2010-01-01

    Objetivos: Describir la situación real del consumo de tabaco en los locales de restauración y hostelería tras la ley de medidas sanitarias frente al tabaquismo, que establece exenciones en este sector a la prohibición general de fumar en el trabajo desde 2006. Métodos Estudio observacional descriptivo en Barcelona en 2008, con muestreo por conglomerados de 1130 establecimientos. Se presentan los resultados estratificados por tipo de establecimiento. Resultados: En el 85,7% de los comercios co...

  1. Consumo de cannabis en los estudiantes de secundaria de Barcelona: inicio en el consumo, efectos experimentados y expectativas Cannabis consumption among secondary school pupils of Barcelona [Spain]: initial use, reported effects and expectancies

    Directory of Open Access Journals (Sweden)

    Eva Morales

    2008-08-01

    Full Text Available Objetivos: Describir las circunstancias del inicio del consumo, las razones para hacerlo, los efectos experimentados y las expectativas relacionadas con el consumo de cannabis en adolescentes de Barcelona. Métodos: Encuesta transversal realizada a una muestra de escolares de 3.º de ESO en 2005. El cuestionario era confidencial y autocumplimentado. Se dispone de datos de 2.043 alumnos de 47 centros escolares de Barcelona. Resultados: El 37,5% de los escolares declaró haber probado el cannabis, de los cuales un 10% lo hizo en el último mes. El consumo fue superior en centros públicos que en concertados-privados (p Objectives: To describe the circumstances of initial use of Cannabis, as well as the reasons for consumption, reported effects and expectations related to cannabis use, among adolescents in Barcelona. Methods: A cross-sectional survey was conducted in a sample of pupils in the third year of compulsory secondary education in 2005. The questionnaire was confidential and self-completed. Data were gathered from 2,043 secondary school pupils from 47 schools in Barcelona. Results: A total of 37.5% of students reported cannabis consumption at some time, and 10.0% of these students had used cannabis in the previous month. Cannabis use was more common in public schools than in subsidized or private schools (p < 0.001. More than half the adolescents (60.3% smoked cannabis for the first time in parks or on the street. Most (88.4% of the adolescents obtained cannabis from a classmate or friend and 92.3% did so without paying for it. The main reason for initial consumption was curiosity, and reasons for continuing use were a desire to feel better and to forget problems. The most frequently reported effects were memory loss, sadness and difficulties in studying or working. Cannabis use was positively related to the expectation that the drug induces relaxation and aids social and sexual relations, and negatively to the beliefs that the drug can

  2. Du Modernisme à Joan Miró : la culture urbaine à Barcelone From Modernism to Joan Miró: Barcelona and Urban Culture Del modernismo a Joan Miró: la cultura urbana en Barcelona

    Directory of Open Access Journals (Sweden)

    Georges Serra

    1996-05-01

    Full Text Available La ville est une langue, écrit Barthes. Le langage architectural et urbaniste de Barcelone présente une recherche d'identité culturelle qui refuse toute forme d'imitation et trouve son expression dans le passé catalan et/ou l'imaginaire méditerranéen. Son objectif est la mise en valeur de la catalanité en dépit des modes de standardisation introduits par le nouvel ordre économique mondial. La recherche identitaire se nourrit de l'image littéraire de la ville, de son image dans l'art et dans les aspects les plus novateurs de la création urbaine contemporaine.The town is a language, Roland Barthes wrote. The architectural and urbanistic language of Barcelona is that of a search for a cultural identity. It refuses only kind of imitation, and finds the elements of its expression in the Catalan past and/or Mediterranean imagery. Its objective is to emphasize Catalanity in spite of the standardization trends introduced by the new global economy. The search for an identity crops up in the literary image of Barcelona, in art, and in the most daring aspects of contemporary urban creations.La ciudad es un lenguaje, escribía Roland Barthes. El lenguaje arquitectural y urbanístico de Barcelona es el de la búsqueda de una cultura propia. Además de negarse a cualquiera imitación, saca del pasado catalán, y/o del mundo imaginario mediterráneo, los elementos de su expresión. El objetivo no es otro que afirmar la catalanidad y ello a pesar de las tentaciones de uniformización a las que induce el nuevo orden económico mundial. Esta búsqueda de una identidad vuelve a encontrarse en la imagen literaria de Barcelona, en las artes plásticas, y en los aspectos más descabellados de la creación urbana contemporánea.

  3. Barcelona, 1938 : una ciutat ocupada musicalment. Ponència llegida al Congrés Barcelona, 1938. Capital de tres governs. Política i cultura, organitzat per la Fundació Pi i Sunyer

    OpenAIRE

    Calmell, Cèsar

    2007-01-01

    El autor de este artículo explica detalladamente la insólita visión de una Barcelona desencantada y con sentimiento de pérdida, abocada al final de la guerra civil y, curiosamente, arrastrada a una extrema inflorescencia cultural en el campo de la música, llevada a cabo por las autoridades de la Repúbica en la primavera de 1938; se trata de «/…/ un relato construído /…/ a espaldas de la cruda realidad vivida en el frente», con el fin de reconducir el público hacia la normalidad y de mantener ...

  4. Insomniac children maternal sleep and mood in São Paulo and Barcelona Sono e humor de mães de crianças pequenas com insônia em São Paulo e Barcelona

    Directory of Open Access Journals (Sweden)

    Eduardina Tenenbojm

    2008-09-01

    Full Text Available OBJECTIVE: To evaluate sleep characteristics verifying for the presence of depressive symptoms in mothers of insomniac children living in São Paulo (Brazil and Barcelona (Spain. METHOD: Forty-six mothers were evaluated, 37 from São Paulo and nine from Barcelona, their ages varying from 19 to 44, and their children; otherwise healthy but with complaints of insomnia, their age varying from three to 33 months. The mothers' sleep quality was rated by the Pittsburgh Sleep Quality Index (PSQI, and the Beck Depression Inventory (BDI. RESULTS: 91.30% of mothers reported poor sleep by PSQI standards. Regarding signs and symptoms of depression, 69.56% of all mothers in this sample showed them. Direct correlation between São Paulo mothers PSQI and BDI was found and also between the child's age and BDI. CONCLUSION: The mothers' poor sleep was related to mood changes with symptoms of depression presenting similar results in both cities.OBJETIVO: Avaliar a presença de sintomas depressivos em mães de crianças com insônia em São Paulo e Barcelona. MÉTODO: Quarenta e seis mães foram avaliadas, 37 de São Paulo e nove de Barcelona, suas idades variaram de 19 a 44 anos, e suas crianças, saudáveis, mas com queixa de insônia tinham idades de três a 33 meses. A mãe foi avaliada pelo Índice de Qualidade de Sono de Pittsburgh (PSQI e pelo Índice de Depressão de Beck (IDB. RESULTADOS: 91,30% das mães relataram sono ruim pelo padrão do PSQI. Quanto aos sinais e sintomas de depressão, 69,56% das mães da amostra total relatavam. Nas mães de São Paulo foi constatada correlação direta entre o PSQI e o IDB, bem como a idade da criança e o IBD. CONCLUSÃO: O sono ruim das mães se correlacionou com sinais e sintomas depressivos e os resultados foram semelhantes nas duas cidades.

  5. Consolidación estructural del edificio patrimonial de C/Ripoll, 25 de Barcelona - Ca la Dona

    Directory of Open Access Journals (Sweden)

    Bestraten, S.

    2012-12-01

    Full Text Available The building, found in 25th Ripoll Street, in Barcelona, is listed by the Special Plan for protection of architectural heritage of the Barcelona district, Ciutat Vella. In 2005, the Ca la Dona association with support from all Catalan public administrations, starts a restoration process under a sustainability criteria. An innovative structural intervention is performed consisting in a functional replacement of the existing floorings with cross-laminated timber panel, which, doesn’t change the overall load state of the building, making compatible the structural continuity of the existing load-bearing walls. This project opens a way to the prefabrication of solutions used in architectural restoration, allowing to adapt to regulatory constraints, along with considering current issues, such as, sustainability.

    El edificio de la calle Ripoll nº25 de Barcelona está catalogado por el Plan especial de protección del patrimonio arquitectónico del distrito barcelonés de Ciutat Vella. En 2005 la asociación Ca la Dona con el apoyo de todas las administraciones públicas catalanas inicia un proceso de rehabilitación con criterios de sostenibilidad. Se realiza una intervención estructural innovadora consistente en una sustitución funcional de forjados existentes con panel de madera contralaminada, que en general no modifica el estado de cargas del edificio haciendo compatible la continuidad estructural de los muros de carga existentes. Este proyecto abre un camino a la prefabricación en la rehabilitación arquitectónica, que permite su adaptación a los requerimientos normativos actuales y a su vez integra consideraciones tan actuales como la sostenibilidad.

  6. Empresas, instituciones y red social: la Compañía Hispanoamericana de Electricidad (CHADE entre Barcelona y Buenos Aires

    Directory of Open Access Journals (Sweden)

    Dalla-Corte Caballero, Gabriela

    2006-08-01

    Full Text Available In this paper we study the relation between the Casa de América of Barcelone and the Hispanoamerican Electric Company» (CHADE of Buenos Aires taking into account three moments: first, the foundation of the association Casa de América and the presence of Francisco Cambó in the Iberoamerican Jurídic Center; second, the foundation of CHADE so as to save the german´s inversions in America because of the participation of Germany in the First World War; third, the change of the American association of Barcelona into the Instituto de Economía Americana (IDEA-Casa de América so as to encourage their internacional activities until the Civil War in Spain.

    En este trabajo se presenta la vinculación entre la Casa de América de Barcelona y la Compañía Hispanoamericana de Electricidad (CHADE en Buenos Aires a través del estudio de tres momentos: primero, la fundación de la asociación y la presencia de Francisco Cambó en el Centro Jurídico Iberoamericano; segundo, la fundación de la CHADE para salvar los capitales alemanes del pago de reparaciones económicas a los Aliados por su participación en la Primera Guerra Mundial; y tercero, la conversión de la asociación americanista barcelonesa en Instituto de Economía Americana (IDEA-Casa de América para reforzar su naturaleza internacional en consonancia con la Sociedad de Naciones, así como el declive de la asociación por la interrupción de remesas de capital del Cono Sur que llegaban a Barcelona en forma de subsidios para la asociación americanista.

  7. Beyond the Conventional Argonauts Explanations

    DEFF Research Database (Denmark)

    Rezaei, Shahamak

    professional and cultural experiences and their network in their home and host country to start up new firms in their home country. Following Schumpeter (1942) these firms are pr definition the outcome of innovative activities as the bifocality (Honig et al. 2010) of the transnational entrepreneurs allows......The last 10-15 years have witnessed a surge of interest in high-tech transnational entrepreneurship. The research has especially been spurred by the centrality of Indians and Chinese in Silicon Valley as the overlooked innovators. Special attention has been paid to how they used their bifocal...... for novel types of resource combinations and thus new products (i.e. new to the firm and market) and possible new organizational forms (e.g. double location sourcing). The centrality of transnational entrepreneurs within the ICT industry has been thoroughly documented in the US, Taiwan, China and India...

  8. Consumo de tabaco de los adolescentes en Barcelona y tendencias a lo largo de 20 años

    OpenAIRE

    Carles Ariza; Xavier García-Continente; Joan Ramon Villalbí; Francesca Sánchez-Martínez; Anna Pérez; Manel Nebot

    2014-01-01

    Objetivos: El tabaquismo es causa de muerte prematura y prevenible, que se inicia en la adolescencia. Se describe el consumo de tabaco en escolares durante 2008 y la tendencia en los últimos 20 años en Barcelona. Material y métodos: Estudio de análisis de la tendencia del consumo. Se comparan datos de ocho encuestas realizadas entre 1987 y 2008 en 2° y 4° cursos de Educación Secundaria Obligatoria (ESO) y 2° de Bachillerato o Ciclos Formativos de Grado Medio. Se utilizó el cuestionario FRE...

  9. Virtual Visit to the ATLAS Control Room by INS Montserrat Miró High School in Barcelona

    CERN Multimedia

    2014-01-01

    We are a group of Physics students in our last course before university. Our High School, INS Montserrat Miró, is in Montcada in the outskirts of Barcelona. Nuclear Physics is a part of our syllabus and being engaged in this visit will allow us to understand more and more what research at CERN is really like. So we`re thrilled preparing our visit, and even more, we are lucky to get this videoconference to see more details about ATLAS experiment. All of us have entered in CERNLAND Contest. Several assignments have been done for that purpose. The atmosphere created is very engaqging due to this goal.

  10. Sistema de detecció de presència a les vies del Transport Metropolità de Barcelona

    OpenAIRE

    Suñer Llaberia, Helena

    2009-01-01

    En aquest projecte es proposa un nou sistema per tal de disminuir el nombre d’incidències a la zona de vies de les estacions del Metro de Barcelona i augmentar la seguretat dels seus usuaris. Per prevenir els accidents que afectin passatgers, per intrusisme o caigudes accidentals a la zona de vies, actualment es tendeix a equipar les andanes amb un sistema de tancament d’andanes constituït bàsicament d’unes mampares d’alumini i vidre transparent, que separen l’andana de la v...

  11. Espais de Trànsit : una lectura de la societat contemporània, des del Metro de Barcelona

    OpenAIRE

    Pellicer i Cardona, Isabel

    2013-01-01

    En l’actualitat un dels espais urbans més utilitzats de la ciutat de Barcelona és el Metro. Les dades de 2011 així ho mostren. Diàriament més d’un milió de persones usen aquest mitjà de transport. Aquest dada posa de manifest l’elevada mobilitat ciutadana i, alhora, evidencia la importància dels trànsits, les trajectòries, els moviments... en la nostra quotidianitat. Partint d’aquesta consideració, i prenent com a posicionament el construccionisme social, hem realitzat una inve...

  12. Guía sobre la implantación de una tasa por congestión en Barcelona

    OpenAIRE

    Cano Tarruella, Maria Isabel

    2004-01-01

    Análisis del modelo de movilidad actual de la Región Metropolitana de Barcelona y detección de sus disfunciones. Propuesta de un nuevo esquema de movilidad que contempla la implantación de una tasa por congestión, cuyo objetivo es internalizar los sobrecostes sociales y ambientales que el uso del vehículo privado en horas puntas genera. Definición de un conjunto de medidas complementarias indispensables para que la Administración pueda garantizar una alternativa eficiente en transporte públic...

  13. Flujos espaciales e itinerarios biográficos : la movilidad residencial en el área de Barcelona /

    OpenAIRE

    Juan Antonio MÓDENES CABRERIZO

    2002-01-01

    Itinerarios biográficos y espaciales de la movilidad residencial en la Región Metropolitana de Barcelona. El estudio de los procesos de redistribución de la población en los espacios urbanos exige el análisis de la interrelación entre desarrollo del ciclo de vida de los sujetos y el cambio de vivienda. Buena parte de la dinámica evolutiva de los hogares se vehicula a través del cambio residencial. En los espacios urbanos la mayor parte del cambio residencial se debe, precisamente, al efecto d...

  14. Experiències d'animació sòcio-cultural a l'Ajuntament de Barcelona

    OpenAIRE

    Colomer, J.

    1988-01-01

    Desde una concepción de la animación sociocultural como acción social y educativa, el Ayuntamiento de Barcelona ha optado por un modelo urbano participativo, que se ha traducido en una descentralización de las decisiones y de la prestación de servicios y en el establecimiento de diversos mecanismos reguladores de la participación ciudadana, así como en proyectos concretos de dinamización sociocultural. En este sentido, se hace una reflexión histórico-crítica sobre cuatro proyectos generados p...

  15. Programa de restauración de áreas periurbanas, 1994-2002 en Santa Coloma de Gramenet, Barcelona

    OpenAIRE

    Fogue i Moya, Antoni P.; Carrión Bernal, Tomás

    2003-01-01

    San la Coloma de Gramenet is a municipality of 125.000 inhabitants located within the Metropolitan Area of Barcelona, well on its way lo sustainability: Between the fifties and the seventies a heavy wave of immigration led lo largely unplanned urban growth . This had serious impact on the surrounding natural area, where there are still spaces preserving a certain ecological value in spite of the high human pressure and pollution by solid wastes. In 1994 the City Council se t up the Sub urban ...

  16. Mantenimiento de la infraestructura de recarga para vehículos eléctricos del Ayuntamiento de Barcelona

    OpenAIRE

    Montón Ibáñez, Javier

    2015-01-01

    Dentro de este Trabajo de Fin de Grado (TFG) se realiza el plan de mantenimiento para el año 2016 de la infraestructura de recarga de vehículo eléctrico del Ayuntamiento de Barcelona, valorando la solución más adecuada y económica para asegurar el correcto funcionamiento de la infraestructura. Además se estima el incremento de costes que supondrá, para la administración, la implementación de un plan de mantenimiento que incluya el mantenimiento preventivo de las instalaciones, permitiendo a l...

  17. La gestión de la Comunicación en la Guàrdia Urbana de Barcelona

    OpenAIRE

    Vinagre Fernández, Noelia

    2015-01-01

    El present treball és un projecte que té com a objectiu la realització d’un reportatge informatiu per a premsa escrita sobre la gestió de la comunicació a la Guàrdia Urbana de Barcelona. Al llarg del treball es desenvolupen de forma detallada tots els temes que es tractaran al futur reportatge, a més d’aspectes tècnics sobre la revista on es publicarà (s’ha plantejat una revista fictícia) i de disseny de la peça periodística.

  18. Els inicis de l'enginyeria nuclear a Barcelona. La Càtedra Ferran Tallada (1955-1962)

    OpenAIRE

    Barca i Salom, Francesc Xavier

    2002-01-01

    Fa 150 anys que es van crear els estudis d'enginyeria industrial a Espanya amb l'objectiu de donar resposta a la creixent industrialització. Tanmateix, de totes les escoles inicialment creades sols l'Escola d'Enginyeria Industrial Barcelona va continuar la seva tasca sense interrupció des de 1851. A un període tant dilatat d'existència li correspon un ampli ventall d'esdeveniments. No obstant, aquesta tesi sols n'estudia un de concret emmarcat entre dues dates: la creació de la Càtedra Ferra...

  19. [In search of the ideal surgical treatment for lymphedema. Report of 2nd European Conference on supermicrosurgery (Barcelona - March 2012)].

    Science.gov (United States)

    Rausky, J; Robert, N; Binder, J-P; Revol, M

    2012-12-01

    Since more than 50 years, many surgeons all around the world try to find the perfect surgical technique to treat limb lymphedemas. Decongestive physiotherapy associated with the use of a compressive garment has been the primary choice for lymphedema treatment. Many different surgical techniques have been developed, however, to date, there is no consensus on surgical procedure. Most surgical experts of lymphedema met in the second European Conference on supermicrosurgery, organized on March 1st and 2nd 2012, in San Pau Hospital, Barcelona. Together they tried to clarify these different options and ideally a strategy for using these techniques.

  20. Una relación significativa: los clubes de lectura y las redes de bibliotecas en Medellín y Barcelona

    Directory of Open Access Journals (Sweden)

    Luis Carlos Toro Tamayo

    2013-01-01

    Full Text Available Para Juan José Arranz Martín, Director de Programas y Cooperación del Consorcio de Bibliotecas de Barcelona, la ciudad de Medellín – Colombia, y los programas que se desarrollan en sus redes de bibliotecas, son un ejemplo y la prueba de que los procesos sociales abordados con seriedad tienen sentido. Desde hace algunos años se viene haciendo un trabajo cooperado entre Medellín y Barcelona, que convoca a usuarios y miembros de las bibliotecas y los clubes de lectura de ambas ciudades en torno a la palabra escrita. Sobre esta experiencia, que es digna de conocer de primera mano, recurrimos a quien desde Barcelona lidera esta alianza estratégica entre dos lugares que por su proximidad idiomática y su interés por el conocimiento están produciendo cambios significativos en la sociedad.

  1. Nuclear research reactors

    International Nuclear Information System (INIS)

    It's presented data about nuclear research reactors in the world, retrieved from the Sien (Nuclear and Energetic Information System) data bank. The information are organized in table forms as follows: research reactors by countries; research reactors by type; research reactors by fuel and research reactors by purpose. (E.G.)

  2. Nuclear reactor

    International Nuclear Information System (INIS)

    A nuclear reactor is described in which the core components, including fuel-rod assemblies, control-rod assemblies, fertile rod-assemblies, and removable shielding assemblies, are supported by a plurality of separate inlet modular units. These units are referred to as inlet module units to distinguish them from the modules of the upper internals of the reactor. The modular units are supported, each removable independently of the others, in liners in the supporting structure for the lower internals of the reactor. The core assemblies are removably supported in integral receptacles or sockets of the modular units. The liners, units, sockets and assemblies have inlet openings for entry of the fluid. The modular units are each removably mounted in the liners with fluid seals interposed between the opening in the liner and inlet module into which the fluid enters in the upper and lower portion of the liner. Each assembly is similarly mounted in a corresponding receptacle with fluid seals interposed between the openings where the fluid enters in the lower portion of the receptacle or fitting closely in these regions. As fluid flows along each core assembly a pressure drop is produced along the fluid so that the fluid which emerges from each core assembly is at a lower pressure than the fluid which enters the core assembly. However because of the seals interposed in the mountings of the units and assemblies the pressures above and below the units and assemblies are balanced and the units are held in the liners and the assemblies are held in the receptacles by their weights as they have a higher specific gravity than the fluid. The low-pressure spaces between each module and its liner and between each core assembly and its module is vented to the low-pressure regions of the vessel to assure that fluid which leaks through the seals does not accumulate and destroy the hydraulic balance

  3. Nuclear reactor physics course for reactor operators

    International Nuclear Information System (INIS)

    The education and training of nuclear reactor operators is important to guarantee the safe operation of present and future nuclear reactors. Therefore, a course on basic 'Nuclear reactor physics' in the initial and continuous training of reactor operators has proven to be indispensable. In most countries, such training also results from the direct request from the safety authorities to assure the high level of competence of the staff in nuclear reactors. The aim of the basic course on 'Nuclear Reactor Physics for reactor operators' is to provide the reactor operators with a basic understanding of the main concepts relevant to nuclear reactors. Seen the education level of the participants, mathematical derivations are simplified and reduced to a minimum, but not completely eliminated

  4. De la integración deseada a la integración vivida: la experiencia de adolescentes brasileños en escuelas de Barcelona

    OpenAIRE

    Pires André, Bianka

    2007-01-01

    ResumenLa propuesta principal de este estudio fue investigar sobre los procesos de integración de un grupo de adolescentes brasileños en escuelas de Barcelona a partir de sus experiencias, mostrando de esta manera las distintas dimensiones que han caracterizado la integración en el caso de estos alumnos. Ahora bien, ¿Cómo viven los adolescentes brasileños la experiencia de integración en escuelas de Barcelona? ¿En qué consiste la integración socioeducativa de estos alumnos? A través de estos ...

  5. El poder dels consellers de Barcelona a través dels consolats d’ultramar (final del segle XIII i primer terç del XIV)

    OpenAIRE

    Mutgé Vives, Josefina

    2009-01-01

    La present comunicació estudia una de les xarxes a través de les quals el govern municipal de Barcelona féu ús del seu poder entre els darrers anys del segle XIII i el primer quart del XIV: els consolats d’ultramar. S’hi fa una nova lectura de diversos documents, procedents de l’Arxiu Històric de la Ciutat de Barcelona i de l’Arxiu de la Corona d’Aragó, sobre els quals ja s’havia treballat, i s’estudia com es manifestava el poder dels consellers sobre els consolats de catalans, en...

  6. Modelo Barcelona y política cultural: usos y abusos de la cultura por parte de un modelo emprendedor de desarrollo local

    OpenAIRE

    Joaquim Rius; M. Victoria Sánchez-Befando

    2015-01-01

    El Modelo Barcelona de desarrollo local ha sido intensamente debatido· Desde su inicio en los años ochenta hasta la actualidad, diversos autores han analizado sus características como modelo, destacado sus éxitos y también sus puntos débiles. No obstante, menos atención ha recibido la relación que existe entre el modelo de desarrollo local y el modelo de política cultural, a pesar de que Barcelona también es internacionalmente conocida por su dinamismo cultural. De manera habitual, este model...

  7. Anàlisi del tractament de la informació sobre Els Fills de Don Quixot a Barcelona en la premsa generalista espanyola i catalan

    OpenAIRE

    Muñoz, Pepa; Carrillo, Mauricio; Aguilar, Moisès

    2008-01-01

    La premsa generalista diària que es pot llegir a Barcelona va demostrar a principis de 2007 que se sotmet a les estratègies comunicatives de l’administració pública quan aquesta més ho necessita. Un exemple ho recull i queda demostrat en aquest article, que presenta una investigació sobre com van donar cobertura els diaris espanyols i catalans a la presència d’Els Fills de Don Quixot a Barcelona, i sobre com expliquen l’intent frustrat d’aquest grup d’organitzar una mobilització per l’accés a...

  8. Influencia de las desigualdades sociales, la conflictividad social y la pobreza extrema sobre la morbilidad por tuberculosis en la ciudad de Barcelona

    OpenAIRE

    Díaz de Quijano Estela; Brugal M. Teresa; Pasarín M.ª Isabel; Galdós-Tangüís Hernando; Caylà Joan; Borrell Carme

    2001-01-01

    Fundamentos: El objetivo principal del presente estudio es analizar las desigualdades de la incidencia de co-enfermedad tuberculosis/drogadicción y de la incidencia de tuberculosis sin drogadicción en los barrios de Barcelona y su asociación con indicadores socioeconómicos y de privación social y material, durante los años 1990-1995. Métodos: Estudio ecológico que incluyó los casos de tuberculosis en personas residentes en la ciudad de Barcelona, siendo el barrio la unidad de análisis. Se con...

  9. Conocimiento y percepción de la nocividad del cigarrillo electrónico en población adulta de Barcelona

    OpenAIRE

    José M. Martínez-Sánchez; Marcela Fu; Montse Ballbè; Juan Carlos Martín-Sánchez; Esteve Saltó; Esteve Fernández

    2015-01-01

    Objetivo: Describir el conocimiento y la percepción de nocividad de los cigarrillos electrónicos (e-cigarrillos) en la población de Barcelona en 2013-2014. Métodos: Se utilizaron los datos del seguimiento (n = 736) de un estudio de cohortes de una muestra representativa de la población adulta de la ciudad de Barcelona. Resultados: El 79,2% de los participantes manifestó conocer el e-cigarrillo. El grado de conocimiento medio fue de 4,4 puntos sobre 10, con diferencias estadísticamente s...

  10. Hybrid adsorptive membrane reactor

    Science.gov (United States)

    Tsotsis, Theodore T.; Sahimi, Muhammad; Fayyaz-Najafi, Babak; Harale, Aadesh; Park, Byoung-Gi; Liu, Paul K. T.

    2011-03-01

    A hybrid adsorbent-membrane reactor in which the chemical reaction, membrane separation, and product adsorption are coupled. Also disclosed are a dual-reactor apparatus and a process using the reactor or the apparatus.

  11. Hybrid adsorptive membrane reactor

    Science.gov (United States)

    Tsotsis, Theodore T. (Inventor); Sahimi, Muhammad (Inventor); Fayyaz-Najafi, Babak (Inventor); Harale, Aadesh (Inventor); Park, Byoung-Gi (Inventor); Liu, Paul K. T. (Inventor)

    2011-01-01

    A hybrid adsorbent-membrane reactor in which the chemical reaction, membrane separation, and product adsorption are coupled. Also disclosed are a dual-reactor apparatus and a process using the reactor or the apparatus.

  12. Spatial variability of trace elements and sources for improved exposure assessment in Barcelona

    Science.gov (United States)

    Minguillón, María Cruz; Cirach, Marta; Hoek, Gerard; Brunekreef, Bert; Tsai, Ming; de Hoogh, Kees; Jedynska, Aleksandra; Kooter, Ingeborg M.; Nieuwenhuijsen, Mark; Querol, Xavier

    2014-06-01

    Trace and major elements concentrations in PM10 and PM2.5 were measured at 20 sites spread in the Barcelona metropolitan area (1 rural background, 6 urban background, 13 road traffic sites) and at 1 reference site. Three 2-week samples per site and size fraction were collected during 2009 using low volume samplers, adding a total of 120 samples. Collected samples were analysed for elemental composition using Energy Dispersive X-ray fluorescence (XRF). EC, OC, and hopanes and steranes concentrations in PM2.5 were determined. Positive Matrix Factorisation (PMF) model was used for a source apportionment analysis. The work was performed as part of the ESCAPE project. Elements were found in concentrations within the usual range in Spanish urban areas. Mineral elements were measured in higher concentrations during the warm season, due to enhanced resuspension; concentrations of fueloil combustion elements were also higher in summer. Elements in higher concentration at the traffic sites were: Ba, Cr, Cu, Fe, Mn, Mo, Pb, Sn, Zn and Zr. Spatial variations related to non-traffic sources were observed for concentrations of Br, Cl, K, and Na (sea salt origin) and Ni, V and S (shipping emissions), which were higher at the coastal sites, as well as for Zn and Pb, higher at sites closer to industrial facilities. Five common sources for PM10 and PM2.5 were identified by PMF: road traffic (with tracers Ba, Cr, Cu, Fe, Mo and Zn); fueloil combustion (Ni and V); secondary sulphate; industry (Pb and Zn); and mineral source (Al, Ca, Mg, Si, Sr and Ti). A marine aerosol source, a mixture of sea salt with aged anthropogenic aerosols, was found only in PM10. EC, hopanes and steranes concentrations correlate strongly with the PM10 road traffic source contributions, being hence all attributed to the same source. OC may arise from other sources in addition to road traffic and have a high contribution of secondary OC. Significant spatial and temporal variation in the PM2.5 and PM10 elemental

  13. Presenting SAPUSS: Solving Aerosol Problem by Using Synergistic Strategies in Barcelona, Spain

    Directory of Open Access Journals (Sweden)

    M. Dall'Osto

    2013-09-01

    Full Text Available This paper presents the summary of the key objectives, instrumentation and logistic details, goals, and initial scientific findings of the European Marie Curie Action SAPUSS project carried out in the western Mediterranean Basin (WMB during September–October in autumn 2010. The key SAPUSS objective is to deduce aerosol source characteristics and to understand the atmospheric processes responsible for their generations and transformations – both horizontally and vertically in the Mediterranean urban environment. In order to achieve so, the unique approach of SAPUSS is the concurrent measurements of aerosols with multiple techniques occurring simultaneously in six monitoring sites around the city of Barcelona (NE Spain: a main road traffic site, two urban background sites, a regional background site and two urban tower sites (150 m and 545 m above sea level, 150 m and 80 m above ground, respectively. SAPUSS allows us to advance our knowledge sensibly of the atmospheric chemistry and physics of the urban Mediterranean environment. This is well achieved only because of both the three dimensional spatial scale and the high sampling time resolution used. During SAPUSS different meteorological regimes were encountered, including warm Saharan, cold Atlantic, wet European and stagnant regional ones. The different meteorology of such regimes is herein described. Additionally, we report the trends of the parameters regulated by air quality purposes (both gaseous and aerosol mass concentrations; and we also compare the six monitoring sites. High levels of traffic-related gaseous pollutants were measured at the urban ground level monitoring sites, whereas layers of tropospheric ozone were recorded at tower levels. Particularly, tower level night-time average ozone concentrations (80 ± 25 μg m−3 were up to double compared to ground level ones. The examination of the vertical profiles clearly shows the predominant influence of NOx on ozone

  14. Un artista cortesano en la Barcelona de Carlos III de Austria: apuntes prosopográficos sobre Andrea Vaccaro II

    Directory of Open Access Journals (Sweden)

    Quirós Rosado, Roberto

    2016-09-01

    Full Text Available At the beginning of the 18th century Barcelona was a principal entry point for the introduction of Italian courtly culture in Spain during the brief reign of Carlos III of Habsburg. This study analyzes the presence of the little-known Neapolitan painter Andrea Vaccaro II in Cataluña, and his connections with the Royal Chamber and the Spanish Habsburg ministry, as well as the concession of offices in Reame as payment for palace services.La diversidad de focos de introducción de la cultura de corte italiana en los inicios del siglo XVIII español obliga a indagar en la circulación de artistas napolitanos en la Barcelona de Carlos III de Austria. Bajo esta premisa, en el estudio se analiza la estancia catalana del desconocido pintor napolitano Andrea Vaccaro II, sus lazos con la Real Cámara y el ministerio español del monarca Habsburgo, así como la concesión de oficios en los tribunales de Nápoles como pago por servicios en palacio.

  15. Retrospective space-time cluster analysis of whooping cough, re-emergence in Barcelona, Spain, 2000-2011.

    Science.gov (United States)

    Solano, Rubén; Gómez-Barroso, Diana; Simón, Fernando; Lafuente, Sarah; Simón, Pere; Rius, Cristina; Gorrindo, Pilar; Toledo, Diana; Caylà, Joan A

    2014-05-01

    A retrospective, space-time study of whooping cough cases reported to the Public Health Agency of Barcelona, Spain between the years 2000 and 2011 is presented. It is based on 633 individual whooping cough cases and the 2006 population census from the Spanish National Statistics Institute, stratified by age and sex at the census tract level. Cluster identification was attempted using space-time scan statistic assuming a Poisson distribution and restricting temporal extent to 7 days and spatial distance to 500 m. Statistical calculations were performed with Stata 11 and SatScan and mapping was performed with ArcGis 10.0. Only clusters showing statistical significance (P <0.05) were mapped. The most likely cluster identified included five census tracts located in three neighbourhoods in central Barcelona during the week from 17 to 23 August 2011. This cluster included five cases compared with the expected level of 0.0021 (relative risk = 2436, P <0.001). In addition, 11 secondary significant space-time clusters were detected with secondary clusters occurring at different times and localizations. Spatial statistics is felt to be useful by complementing epidemiological surveillance systems through visualizing excess in the number of cases in space and time and thus increase the possibility of identifying outbreaks not reported by the surveillance system.

  16. Spatial and temporal variability of PM levels and composition in a complex summer atmospheric scenario in Barcelona (NE Spain)

    Science.gov (United States)

    Viana, M.; Pérez, C.; Querol, X.; Alastuey, A.; Nickovic, S.; Baldasano, J. M.

    Summer atmospheric coastal dynamics exert a significant influence on the levels and composition of atmospheric particulate matter (PM) in the North-Eastern Iberian Peninsula. Summer atmospheric scenarios in this region present a high degree of complexity as they are characterised by the absence of synoptic-scale air mass advections, the development of breeze circulations, enhanced photochemistry, local mineral dust re-suspension and the occurrence of African dust outbreaks. Three sampling sites were selected in Barcelona (NE Spain), an urban coastal site surrounded by complex topography. Regional dust modelling (DREAM) and high resolution meteorological modelling (MM5) were used to interpret PM levels and composition at the three sites. The results outline the effect of breeze dynamics and thermal internal boundary layer formation as the main meteorological drivers of the hourly evolution of PM levels. Levels of crustal components, secondary inorganic and carbon species are higher during the night, and only the marine aerosol content is higher during the day. Nitrate levels are higher during the night due to the thermal stability on NH 4NO 3. Sulphate levels are higher during the night as a consequence of the drainage flows. Lidar measurements and model results signalled the occurrence of two African dust episodes during the study period which mainly affected the free troposphere over Barcelona.

  17. La influencia de la calidad de vida en el crecimiento urbano. El caso de la provincia de Barcelona

    Directory of Open Access Journals (Sweden)

    Vicente Royuela

    2008-11-01

    Full Text Available El objetivo de nuestro trabajo es evaluar la importancia de la calidad de vida a la hora de explicar en el crecimiento de la población a nivel local. Para conseguirlo empleamos un modelo teórico que recoge los factores básicos explicativos del crecimiento urbano; concretamos qué entendemos exactamente por calidad de vida y cómo aproximamos su medida; y nos centramos en el caso de estudio de los municipios de la provincia de Barcelona en el período 1991-2000. Finalmente estimamos un modelo empírico mediante variables instrumentales y considerando la existencia de heteroscedasticidad y autocorrelación espacial para los municipios de la provincia de Barcelona. En el trabajo, además de contrastar la importancia de los diferentes factores en el crecimiento urbano, nos preguntamos por una cuestión adicional: ¿cuál es la mejor manera de considerar en el modelo el concepto de calidad de vida?

  18. Edificios con forjados postesados mediante tendones no adherentes. Edificio Mapfre-Vía Augusta, en Barcelona-España

    Directory of Open Access Journals (Sweden)

    Llombart Jaques, José Antonio

    1994-08-01

    Full Text Available The technique of unbonded tendons applied to post-tensioned flat-slabs of buildings of certain importance has not been very frequent in Spain to date; in fact, it was used on very few occasions. This article gives the basic characteristics of the post-tensioned floors comparing them with the conventional solutions of reinforced concrete floors. The second part of the article brings a description of the main aspects of the design and construction of the Mapfre-Vía Augusta building in Barcelona. This recently raised building has the floor construction with slabs post-tensioned by unbonded tendons.

    La técnica del postesado no adherente, aplicada a losas de forjado de edificios de cierta entidad, ha sido hasta el momento poco común en España, habiéndose utilizado solamente en contadas ocasiones. Se indican, en primer lugar, las características fundamentales de los forjados postesados y se establecen comparaciones con soluciones convencionales de forjados de hormigón armado. En la segunda parte del artículo se describen los principales aspectos de proyecto y construcción de la estructura del Edificio Mapfre-Vía Augusta, en Barcelona, de reciente construcción, cuyos forjados están constituidos por losas postesadas mediante tendones no adherentes.

  19. De la perrera municipal al centro de acogida de animales de compañía de Barcelona

    Directory of Open Access Journals (Sweden)

    Peracho V.

    2003-01-01

    Full Text Available El objetivo de este trabajo es presentar la evolución de la política y los servicios de salud pública relativos a los animales de compañía en la ciudad de Barcelona de 1983 a 2001. Partiendo de una actividad centrada en la custodia y la eutanasia de los animales sin dueño de Barcelona, y ofertando también servicios al resto de la provincia, se formula un Plan de Animales de Compañía para la ciudad y se reorienta la actividad, centrándola en los límites estrictos del municipio y el estímulo de la adopción. Se busca la participación de profesionales y entidades proteccionistas, se remodelan las instalaciones, se fomenta la tenencia responsable de animales, se crean colonias urbanas controladas de gatos y se estimulan las adopciones, redefiniendo la actividad con una mayor orientación al cliente. La evolución de la actividad desde 1998 refleja una notable disminución en el volumen de animales custodiados, así como en la proporción de los sacrificados. Esta disminución puede reflejar una mejora en el problema de los animales abandonados. Estos cambios se han traducido en una modificación positiva de las relaciones con los medios de comunicación y las entidades proteccionistas.

  20. Reactor container

    International Nuclear Information System (INIS)

    Purpose: To prevent shocks exerted on a vent head due to pool-swell caused within a pressure suppression chamber (disposed in a torus configuration around the dry well) upon loss of coolant accident in BWR type reactors. Constitution: The following relationship is established between the volume V (m3) of a dry well and the ruptured opening area A (m2) at the boundary expected upon loss of coolant accident: V >= 30340 (m) x A Then, the volume of the dry well is made larger than the ruptured open area, that is, the steam flow rate of leaking coolants upon loss of coolant accident to decrease the pressure rise in the dry well at the initial state where loss of coolant accident is resulted. Accordingly, the pressure of non-compressive gases jetted out from the lower end of the downcomer to the pool water is decreased to suppress the pool-swell. (Ikeda, J.)

  1. De la perrera municipal al centro de acogida de animales de compañía de Barcelona From the municipal dog pound to the pet shelter in Barcelona, Spain

    Directory of Open Access Journals (Sweden)

    V. Peracho

    2003-12-01

    Full Text Available El objetivo de este trabajo es presentar la evolución de la política y los servicios de salud pública relativos a los animales de compañía en la ciudad de Barcelona de 1983 a 2001. Partiendo de una actividad centrada en la custodia y la eutanasia de los animales sin dueño de Barcelona, y ofertando también servicios al resto de la provincia, se formula un Plan de Animales de Compañía para la ciudad y se reorienta la actividad, centrándola en los límites estrictos del municipio y el estímulo de la adopción. Se busca la participación de profesionales y entidades proteccionistas, se remodelan las instalaciones, se fomenta la tenencia responsable de animales, se crean colonias urbanas controladas de gatos y se estimulan las adopciones, redefiniendo la actividad con una mayor orientación al cliente. La evolución de la actividad desde 1998 refleja una notable disminución en el volumen de animales custodiados, así como en la proporción de los sacrificados. Esta disminución puede reflejar una mejora en el problema de los animales abandonados. Estos cambios se han traducido en una modificación positiva de las relaciones con los medios de comunicación y las entidades proteccionistas.This article aims to present changes in public health policy and services related to pet dogs and cats in the city of Barcelona from 1983 to 2001. Initially the center's activity was limited to the custody and euthanasia of stray animals, serving not only the city but also the rest of the province. With the formulation of a city Plan for Pet Animals, the activities were redirected, concentrating on services within the city limits and stimulating adoption. Participation of both professional and humane organizations was sought, premises were renovated, responsible ownership of animals was promoted, controlled urban colonies of cats were established, and adoptions become the cornerstone of policy, centering the activity of the shelter toward its clients

  2. Muusikamaailm : Lihavõttefestivalid Euroopas. Uus kontserdimaja avati Barcelonas. Johann Adolf Hasse ئ 300. Märtsikuu teisi tähtpäevi / Priit Kuusk

    Index Scriptorium Estoniae

    Kuusk, Priit, 1938-

    1999-01-01

    Lihavõttefestivalidest Salzburgis, Viinis ja Luzernis. kontsertidest, esinejatest. Barcelonas avatud uuest kontserdimajast L"Auditori. Helilooja 300. sünniaastapäeva puhul on mitmel pool Euroopas välja toodud tema ooperite uuslavastusi. Muusikute tähtpäevi märtsis 1999

  3. Evaluación de la Conservación de la Colección Sabater Pi en la Biblioteca de la Universitat de Barcelona

    OpenAIRE

    Andrades Márquez, Tana; Palau i Sallent, Domènec

    2011-01-01

    Máster en Direcció de Projectes de Conservació-Restauració: Col.leccions i Conjunts Patrimonials. Universitat de Barcelona. Col.leccions: de la quotidianitat a l’ambit museistic, Coordinació: Anna Nualart Torroja

  4. Evolución del Módulo Común de Firma Electrónica del Ayuntamiento de Barcelona

    OpenAIRE

    Fernández Martín, Javier

    2016-01-01

    Partiendo de una versión inicial de módulo común de firma electrónica del Ayuntamiento de Barcelona, analizar sus problemas y debilidades para implementar una nueva versión que los solucione. El proyecto recoge la evolución desde Octubre de 2009 hasta Mayo de 2016, se ha ido evolucionando por fases

  5. Analytical considerations in the use of capture-recapture to estimate prevalence: case studies of the estimation of opiate use in the metropolitan area of Barcelona, Spain.

    Science.gov (United States)

    Domingo-Salvany, A; Hartnoll, R L; Maguire, A; Brugal, M T; Albertín, P; Caylà, J A; Casabona, J; Suelves, J M

    1998-10-15

    Capture-recapture, an indirect method widely used to estimate undetected populations, has been criticized because it causes problems due to a lack of compliance with several important assumptions and model selection strategies. This paper expands on the problems encountered when applying this methodology to drug abuse estimations, specifically the prevalence of opiate use in the metropolitan area of Barcelona, Spain, in 1993. Three samples of opiate users (from hospital emergency rooms, treatment centers, and prisons) were available in the area studied; an additional sample (mortality data) was analyzed for the city of Barcelona. Log-linear models that provided a good fit were considered, to which further model selection strategies were applied. A total of 3,207 unique individuals aged 15-44 years were identified in the three samples from the greater Barcelona area; the mortality sample from the city of Barcelona contained an additional 83 individuals. Heterogeneity was observed in different age, sex, and residence area subgroups. Population estimates differed widely according to the log-linear model chosen. Minimum Akaike's information criterion model and saturated model estimates were used to produce population prevalence rates. The main problems the authors encountered in this study were related to population definition, source heterogeneity, and assessment of an adequate model, a problem associated with sample size. PMID:9786228

  6. Cataluña, deporte, medios de comunicación : Barcelona '92, los Juegos de la comunicación

    OpenAIRE

    Moragas Spà, Miquel de

    1992-01-01

    Los medios de comunicación definen el movimiento olímpico moderno. Barcelona'92 será uno de los procesos de comunicación más importantes de la historia de la televisión y de la historia de la humanidad.

  7. Geochemical signature and phytoremediation of urban soil: a case in Barcelona city

    Science.gov (United States)

    Rodríguez-Bocanegra, Javier; Roca, Núria; Febrero, Anna; Bort, Jordi

    2016-04-01

    The cleanup of contaminated places with heavy metals is necessary, but environmental remediation strategies are often expensive and energy consuming. Thus, it is important to develop low-cost and environmentally friendly strategies. Phytoremediation-based technologies could provide a long-lasting solution. The study area is located in Sants, a neighbourhood in Barcelona city (Catalonia, Spain). This place was an industrial area in the last century, which was occupied by a metal smelting industry. Nowadays, the neighbours want to cultivate vegetables in this location, but the history of this area suggests that the soil is polluted by elevated concentrations of heavy metals. The aim of this work was to determine heavy metal concentration in: a) soil, to know the degree of the soil pollution; b) roots and leaves of two plant species, Brassica juncea as an accumulator plant and Solanum lycopersicum as a crop plant, to know the capacity of each species to accumulate metals, and c) drainage water, to evaluate the heavy metal mobility. The main pollutants are Cu, Pb and Zn with topsoil total concentrations about 1355, 2230 and 6239 mg•kg-1, respectively. The established background upper limits in this area in mg•kg-1 were: Cu 145, Pb 91 and Zn 326. The same soil elements for available fractions, extracted with DTPA, were slightly elevated (9.6, 5.8 and 6.7 % of total concentration). The environmental pollution implies great extractability, suggesting the plants in these soils have facility with potentially toxic elements absorption. Instead, the concentrations in subsoil are lower than in topsoil. The concentrations of Cu, Pb and Zn in the plants' leaves are greater in B. juncea 170 ± 52.7, 137 ± 46.3 and 2365 ± 860.4 mg•kg-1, than in S. lycopersicum 102.5 ± 7.1, 22.5 ± 1.3 and 1002 ± 85.2 mg•kg-1 respectively. Furthermore, they are also greater in roots than in leaves. All of them are lower than the threshold to be considered like a hyperaccumulator species

  8. Tendencias en el consumo de tabaco, alcohol y cannabis de los escolares de Barcelona (1987-1999 Trends in tobacco, alcohol and cannabis consumption among secondary school pupils in Barcelona, Spain [1987-1999

    Directory of Open Access Journals (Sweden)

    C. Ariza

    2003-06-01

    Full Text Available Objetivo: Describir las tendencias en el consumo de tabaco, alcohol y cannabis entre los adolescentes escolarizados entre 1987 y 1999 de la ciudad de Barcelona. Métodos: Encuestas transversales realizadas a muestras representativas de escolares de segundo curso de Educación Secundaria Obligatoria (ESO entre 1987 y 1999. Los cuestionarios eran anónimos y autocontestados. Se dispone de datos de 5.013 escolares de la ciudad de Barcelona que participan en alguna de las 5 encuestas. Resultados: Tras disminuir de forma uniforme entre 1987 y 1996, en 1999 se observa un aumento del 13,4% en el consumo regular (diario o semanal de tabaco y del 38,7% en el consumo experimental de tabaco, respecto a las prevalencias observadas en 1996. Con respecto al consumo de alcohol, se observa una disminución global del 14% de los escolares que ha bebido al menos medio vaso de alcohol entre 1987 y 1999. El consumo problemático de alcohol se iguala en ambos sexos, y la proporción que declara haberse emborrachado alguna vez es en 1999 superior en las chicas (14,0% que en los chicos (10,5%. Mientras en 1996 un 6,9% declaraba haber probado cannabis, la proporción en 1999, sin diferencias entre sexos, era del 7,3% de la población estudiada. Conclusiones: En el período estudiado se observa un aumento del consumo regular de tabaco, una disminución del consumo de alcohol y una estabilización del consumo de cannabis. Las diferencias entre ambos sexos tienden a desaparecer.Objective: To describe trends in tobacco, alcohol, and cannabis consumption among secondary school pupils in Barcelona between 1987 and 1999. Methods: Cross-sectional surveys administered to representative samples of pupils in the second year of secondary school between 1987 and 1999. The questionnaires were anonymous and self-completed. We present data from 5013 secondary school pupils from Barcelona who participated in one of the five surveys. Results: Regular smoking (daily and weekly showed a

  9. La comunicación digital del FC Barcelona y del Real Madrid CF y su percepción por los periodistas deportivos / Digital communication of FC Barcelona and Real Madrid CF and its perception by sports journalists

    Directory of Open Access Journals (Sweden)

    Fernando Olabe Sánchez

    2012-12-01

    Full Text Available ResumenEl FC Barcelona y el Real Madrid CF han cambiado su modelo de gestión comunicativa, especialmente en su relación con los medios de comunicación. Favorecidos por la implantación de las TIC, los departamentos de Comunicación de estas entidades se constituyen en gatekeeper al controlar y emitir, a través de sus propios medios de comunicación, como las televisiones y radios propias y los soportes online, las informaciones que ellos mismos generan. De este modo, controlan los mensajes y los emiten directamente a sus públicos objetivos sin la intermediación de los medios convencionales, condicionando las rutinas productivas de los periodistas deportivos.El objetivo de este trabajo es mostrar la percepción que estos profesionales tienen sobre las diferentes herramientas y soportes online que los departamentos de Comunicación de estos clubes emplean en su actividad diaria con los medios.AbstractThe FC Barcelona and Real Madrid CF have changed their communicative management model, especially in its relationship with the media. Favored by the introduction of ICT, Communication departments of these entities constitute gatekeeper to control and issue, through their own media, such as television and radio stations and media own online, the information that they generate. Thus, controlling broadcast messages and their target audiences directly without the intermediation of the mainstream media, conditioning routines productive sports journalists.The aim of this paper is to show the perception that these professionals have about the different tools and online media Communication departments to use these clubs in their daily activities with the media.

  10. Research Nuclear Reactors

    International Nuclear Information System (INIS)

    Published in English and in French, this large report first proposes an overview of the use and history of research nuclear reactors. It discusses their definition, and presents the various types of research reactors which can be either related to nuclear power (critical mock-ups, material test reactors, safety test reactors, training reactors, prototypes), or to research (basic research, industry, health), or to specific particle physics phenomena (neutron diffraction, isotope production, neutron activation, neutron radiography, semiconductor doping). It reports the history of the French research reactors by distinguishing the first atomic pile (ZOE), and the activities and achievements during the fifties, the sixties and the seventies. It also addresses the development of instrumentation for research reactors (neutron, thermal, mechanical and fission gas release measurements). The other parts of the report concern the validation of neutronics calculations for different reactors (the EOLE water critical mock-up, the MASURCA air critical mock-up dedicated to fast neutron reactor study, the MINERVE water critical mock-up, the CALIBAN pulsed research reactor), the testing of materials under irradiation (OSIRIS reactor, laboratories associated with research reactors, the Jules Horowitz reactor and its experimental programs and related devices, irradiation of materials with ion beams), the investigation of accident situations (on the CABRI, Phebus, Silene and Jules Horowitz reactors). The last part proposes a worldwide overview of research reactors

  11. Working toward cancer and healthy living education around the world: the experience at La Salle Campus Barcelona.

    Science.gov (United States)

    Forrest, Tallulah

    2012-01-01

    Health education, especially in the earlier stages of life, is essential for the development of healthy habits for life. Though healthy living messages must first be delivered locally, our goal is to distribute these messages globally using new technology and communications mediums. The La Salle schools, with a global network of primary, secondary, and higher education institutions have the capacity to reach thousands of children. La Salle Campus Barcelona, in collaboration with St. Jude Children's Research Hospital and Hospital Sant Joan de Déu , has started to carry out educational activities in schools in Catalonia, as well as supporting the design of video games teaching healthy habits and preparing videos about a healthy lifestyle, with the goal of reaching children around the world.

  12. HIV vaccine trial willingness among injection and non-injection drug users in two urban centres, Barcelona and San Francisco.

    Science.gov (United States)

    Etcheverry, M Florencia; Lum, Paula J; Evans, Jennifer L; Sanchez, Emilia; de Lazzari, Elisa; Mendez-Arancibia, Eva; Sierra, Ernesto; Gatell, José M; Page, Kimberly; Joseph, Joan

    2011-02-24

    Being able to recruit high-risk volunteers who are also willing to consider future participation in vaccine trials are critical features of vaccine preparedness studies. We described data from two cohorts of injection- and non-injection drug users in Barcelona, Spain [Red Cross centre] and in San Francisco, USA, [UFO-VAX study] at high risk of HIV/HCV infection to assess behaviour risk exposure and willingness to participate in future preventive HIV vaccine trials. We successfully identified drug-using populations that would be eligible for future HIV vaccine efficacy trials, based on reported levels of risk during screening and high levels of willingness to participate. In both groups, Red Cross and UFO-VAX respectively, HCV infection was highly prevalent at baseline (41% and 34%), HIV baseline seroprevalence was 4.2% and 1.5%, and high levels of willingness were seen (83% and 78%). PMID:21241735

  13. Análisis de la intervención docente en psicomotricidad en escuelas infantiles de Barcelona

    OpenAIRE

    Simo, Alexandra

    2012-01-01

    Este trabajo trata sobre el análisis de la intervención docente en el área de la psicomotricidad en diferentes escuelas de Barcelona. Dichas escuelas han sido elegidas por tener idearios pedagógicos distintos a las escuelas más habituales, de metodología más tradicional. Las escuelas de las que se ha realizado un análisis de la intervención han sido las de pedagogos como María Montessori, Jean Piaget, Decroly y Waldorf. Así pues, se ha comparado la intervención docente a través de un cuest...

  14. HIV vaccine trial willingness among injection and non-injection drug users in two urban centres, Barcelona and San Francisco.

    Science.gov (United States)

    Etcheverry, M Florencia; Lum, Paula J; Evans, Jennifer L; Sanchez, Emilia; de Lazzari, Elisa; Mendez-Arancibia, Eva; Sierra, Ernesto; Gatell, José M; Page, Kimberly; Joseph, Joan

    2011-02-24

    Being able to recruit high-risk volunteers who are also willing to consider future participation in vaccine trials are critical features of vaccine preparedness studies. We described data from two cohorts of injection- and non-injection drug users in Barcelona, Spain [Red Cross centre] and in San Francisco, USA, [UFO-VAX study] at high risk of HIV/HCV infection to assess behaviour risk exposure and willingness to participate in future preventive HIV vaccine trials. We successfully identified drug-using populations that would be eligible for future HIV vaccine efficacy trials, based on reported levels of risk during screening and high levels of willingness to participate. In both groups, Red Cross and UFO-VAX respectively, HCV infection was highly prevalent at baseline (41% and 34%), HIV baseline seroprevalence was 4.2% and 1.5%, and high levels of willingness were seen (83% and 78%).

  15. Las Ramblas de Barcelona. Una aportación al estudio de ciudades mediterráneas

    OpenAIRE

    Ospina Tascón, Juan José

    2014-01-01

    La tesi es planteja com una aportació a l'estudi urbanístic de ciutats mediterrànies, que van créixer vinculades a rambles o rieres, l'exemple més significatiu el constitueixen les Rambles de Barcelona. L'objectiu de la tesi és analitzar el paper que han exercit les rambles en diferents períodes històrics, a partir de diferents funcions com a eix d’escorrentia, límit territorial, passeig o espai públic. La metodologia utilitzada va consistir en indagació literària, històrica i cartogràfica...

  16. Contribution of ecosystem services to air quality and climate change mitigation policies: the case of urban forests in Barcelona, Spain.

    Science.gov (United States)

    Baró, Francesc; Chaparro, Lydia; Gómez-Baggethun, Erik; Langemeyer, Johannes; Nowak, David J; Terradas, Jaume

    2014-05-01

    Mounting research highlights the contribution of ecosystem services provided by urban forests to quality of life in cities, yet these services are rarely explicitly considered in environmental policy targets. We quantify regulating services provided by urban forests and evaluate their contribution to comply with policy targets of air quality and climate change mitigation in the municipality of Barcelona, Spain. We apply the i-Tree Eco model to quantify in biophysical and monetary terms the ecosystem services "air purification," "global climate regulation," and the ecosystem disservice "air pollution" associated with biogenic emissions. Our results show that the contribution of urban forests regulating services to abate pollution is substantial in absolute terms, yet modest when compared to overall city levels of air pollution and GHG emissions. We conclude that in order to be effective, green infrastructure-based efforts to offset urban pollution at the municipal level have to be coordinated with territorial policies at broader spatial scales.

  17. Memòria pública i debat polític a Barcelona (1931-1936

    Directory of Open Access Journals (Sweden)

    Fernando Sánchez Costa

    2012-03-01

    Full Text Available Tesis doctoral dirigida por Alfons Puigarnau y codirigida por José Olives (ambos de la Universitat Internacional de Catalunya. Fue defendida el 6 de julio de 2011 en la Universitat Internacional de Catalunya y obtuvo la calificación de excelente cum laude por unanimidad. Formaban el tribunal los doctores Jean-Louis Guereña (U. François Rabelais, Tours, Presidente del tribunal, José Enrique Ruiz-Domènec (U. Autònoma de Barcelona, Enrique Banús (U. Internacional de Catalunya, Stéphane Michonneau (École des Hautes Études Hispaniques-Casa de Velázquez, Madrid, Jaume Aurell (Universidad de Navarra.

  18. Differences between users of six public parks in Barcelona depending on the level of perceived safety in the neighborhood

    Directory of Open Access Journals (Sweden)

    Félix Pérez Tejera

    2012-03-01

    Full Text Available Research on the relation between fear of crime and public space has been often limited to psychosocial processes (place attachment, social cohesion, collective efficacy and the effect of environmental variables (brightness, graffitis, cleaness. Most of the behavioral aspects involved, however, have been neglected. In this work we carried out a systematic observational study of the types of users (gender, age, ethnicity, signs of poverty of six public parks in Barcelona. We examined whether there would be differences between users of three parks in the neighbourhood with the highest level of fear of crime and the users of three public parks in the neighbourhoods with the highest levels of perceived safety. The analysis showed significant differences in the spatial occupancy patterns between the two neighbourhoods. The differences highlighted processes of avoidance of public space by women, children and the elderly, and processes of spatial segregation depending on ethnicity and the presence of signs of poverty.

  19. Una aproximació a la comunitat xinesa de Barcelona a través de la medicina tradicional xinesa

    OpenAIRE

    Morera Casaponsa, Josep Ricard

    2014-01-01

    El pràcticum és una aproximació a la comunitat xinesa a través de la medicina tradicional xinesa. La línia de recerca és sobre temes de societat. Ens hem endinsat en la comunitat xinesa que viu i treballa a Barcelona. Per això ho hem analitzat i observat des de la perspectiva social i econòmica, en un primer terme, per a passar a continuació, i com a manifestació d'aquesta comunitat i del seu coneixement, a realitzar l'aprofundiment mitjançant la medicina tradicional xinesa, en concret la que...

  20. Tendencias en el consumo de tabaco, alcohol y cannabis de los escolares de Barcelona (1987-1999

    Directory of Open Access Journals (Sweden)

    Ariza C.

    2003-01-01

    Full Text Available Objetivo: Describir las tendencias en el consumo de tabaco, alcohol y cannabis entre los adolescentes escolarizados entre 1987 y 1999 de la ciudad de Barcelona. Métodos: Encuestas transversales realizadas a muestras representativas de escolares de segundo curso de Educación Secundaria Obligatoria (ESO entre 1987 y 1999. Los cuestionarios eran anónimos y autocontestados. Se dispone de datos de 5.013 escolares de la ciudad de Barcelona que participan en alguna de las 5 encuestas. Resultados: Tras disminuir de forma uniforme entre 1987 y 1996, en 1999 se observa un aumento del 13,4% en el consumo regular (diario o semanal de tabaco y del 38,7% en el consumo experimental de tabaco, respecto a las prevalencias observadas en 1996. Con respecto al consumo de alcohol, se observa una disminución global del 14% de los escolares que ha bebido al menos medio vaso de alcohol entre 1987 y 1999. El consumo problemático de alcohol se iguala en ambos sexos, y la proporción que declara haberse emborrachado alguna vez es en 1999 superior en las chicas (14,0% que en los chicos (10,5%. Mientras en 1996 un 6,9% declaraba haber probado cannabis, la proporción en 1999, sin diferencias entre sexos, era del 7,3% de la población estudiada. Conclusiones: En el período estudiado se observa un aumento del consumo regular de tabaco, una disminución del consumo de alcohol y una estabilización del consumo de cannabis. Las diferencias entre ambos sexos tienden a desaparecer.

  1. L’esperança de vida dels infants de l’hospital de la Santa Creu de Barcelona

    Directory of Open Access Journals (Sweden)

    Vinyoles Vidal, Teresa

    2013-06-01

    Full Text Available On the premise of high infant mortality in the early medieval period, this paper attempts an approach to life expectancy of children taken in at the Santa Creu hospital in Barcelona, during the first half of the 15th century. One of the functions of the hospital was to host foundlings and ensure their survival and integration into society. To fulfil these functions a set of documents were drafted, although only parts of then survive, providing interesting information on the topic of this paper. We present data on mortality in the various stages of childhood, the incidence of outbreaks of epidemics, the information we have been able to obtain on diseases the remedies, causes of death and infant burials.[ct] Partint de la premissa de la gran mortalitat infantil baixmedieval, aquest treball intenta una aproximació a l’esperança de vida dels infants acollits a l’hospital de la Santa Creu de Barcelona durant la primera meitat del segle XV. Una de les funcions de l’hospital era recollir els expòsits, procurar la seva supervivència i la seva integració a la societat. El compliment d’aquestes funcions va implicar la redacció d’una sèrie de documents que, si bé només s’han conservat en part, ens ofereixen informació molt interessant pel tema d’aquest treball. Presentem dades sobre la mortalitat en les diverses etapes de la infància, la incidència dels brots epidèmics, les notícies que hem pogut obtenir sobre les malalties, els remeis, les causes de la mort i els enterraments infantils.

  2. Estructura metálica del edificio social de la Mutua General de Seguros Barcelona – España

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    Busquets, Xavier

    1977-10-01

    Full Text Available This describes the solution adopted for the Mutua General de Seguros structure on the Diagonal in Barcelona. The building consists of six general basements and two elevated wings, one of thirteen stories and another of four, joined together on the third and second floors. The problems which had to be overcome were various in nature: from anchoring the concrete blocks in the underground floors to achieving maximum clear space —there are no intermediate supports on the office floors— this was achieved satisfactorily, on the higher floors by means of large span porticos, made up of two well-defined parts (the ground floor portico and the upper floor assembly], from both a structural and esthetic point of view.Se describe la solución adoptada para estructura de la Mutua General de Seguros, en la Diagonal de Barcelona. El edificio se compone de seis sótanos generales y dos bloques elevados, uno de trece plantas y otro de cuatro, debidamente enlazados por la segunda y tercera. Los problemas planteados fueron de muy diversa índole: desde la sujeción de las pantallas de hormigón de las plantas enterradas, hasta la consecución de la máxima diafanidad —en todas las plantas de oficinas no existen soportes intermedios— en las plantas altas a base de pórticos de gran luz, compuestos de dos partes bien definidas (el pórtico de planta baja y el conjunto de las superiores y acertadamente resueltos, desde el doble punto de vista estructural y estético.

  3. Epidemiological characteristics and predictors of late presentation of HIV infection in Barcelona (Spain during the period 2001-2009

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    Guelar Ana

    2011-07-01

    Full Text Available Abstract Background Early diagnosis of HIV infection can prevent morbidity and mortality as well as reduce HIV transmission. The aim of the present study was to assess prevalence, describe trends and identify factors associated with late presentation of HIV infection in Barcelona (Spain during the period 2001-09. Methods Demographic and epidemiological characteristics of cases reported to the Barcelona HIV surveillance system were analysed. Late presentation was defined for individuals with a CD4 count below 350 cells/ml upon HIV diagnosis or diagnosis of AIDS within 3 months of HIV diagnosis. Multivariate logistic regression were used to identify predictors of late presentation. Results Of the 2,938 newly diagnosed HIV-infected individuals, 2,507 (85,3% had either a CD4 cell count or an AIDS diagnosis available. A total of 1,139 (55.6% of the 2,507 studied cases over these nine years were late presenters varying from 48% among men who have sex with men to 70% among heterosexual men. The proportion of late presentation was 62.7% in 2001-2003, 51.9% in 2004-2005, 52.6% in 2006-2007 and 52.1% in 2008-2009. A decrease over time only was observed between 2001-2003 and 2004-2005 (p = 0.001 but remained constant thereafter (p = 0.9. Independent risk factors for late presentation were older age at diagnosis (p Conclusion Late presentation of HIV is still too frequent in all transmission groups in spite of a strong commitment with HIV prevention in our city. It is necessary to develop interventions that increase HIV testing and facilitate earlier entry into HIV care.

  4. CAPITALISMO IMOBILIÁRIO E FINANCEIRO E IMPLICAÇÕES SOCIAIS DA PRODUÇÃO HABITACIONAL EM BARCELONA

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    Danilo Volochko

    2012-01-01

    Full Text Available El análisis de la metrópoli de Barcelona nos ayuda a tomar el tema de la financiarización de la producción del espacio que ha venido ocurriendo en los últimos años en varios países, incluso en Brasil. Este proceso se presenta en el mundo con distintos ritmos e intensidades, ya que cuenta con diferentes mediaciones históricas, políticas, institucionales, económicas, ideológicas y sociales entre los países de economías avanzadas y aquellos llamados en desarrollo. En este sentido, es importante considerar el modo como ocurre este proceso en un país como España, que sustentó su gran crecimiento económico de la última década en las bases de la producción inmobiliaria del espacio bajo un capitalismo financiarizado. Es posible identificar en este país las contradicciones acerca de la realización de los negocias inmobiliarios - lo incremento del valor del suelo urbano y los conflictos planteados por la apropiación del espacio urbano para la vida de la gente, lo que revela la lucha contra la expropiación financiera y inmobiliaria de los hogares más pobres o sobreendeudados. Este camino nos puede ayudar en la interpretación de la producción globalizada del espacio, en el caso aquí planteada a través de la expansión metropolitana y periférica de la producción de la vivienda en Barcelona, lo que nos pone frente a una crisis no sólo económica sino más bien una gran crisis social.

  5. Indoor/outdoor relationships and mass closure of quasi-ultrafine, accumulation and coarse particles in Barcelona schools

    Science.gov (United States)

    Viana, M.; Rivas, I.; Querol, X.; Alastuey, A.; Sunyer, J.; Álvarez-Pedrerol, M.; Bouso, L.; Sioutas, C.

    2014-05-01

    The mass concentration, chemical composition and sources of quasi-ultrafine (quasi-UFP, PM0.25), accumulation (PM0.25-2.5) and coarse mode (PM2.5-10) particles were determined in indoor and outdoor air at 39 schools in Barcelona (Spain). Quasi-UFP mass concentrations measured (25.6 μg m-3 outdoors, 23.4 μg m-3 indoors) are significantly higher than those reported in other studies, and characterised by higher carbonaceous and mineral matter contents and a lower proportion of secondary inorganic ions. Results suggest that quasi-UFPs in Barcelona are affected by local sources in the schools, mainly human activity (e.g. organic material from textiles, etc., contributing 23-46% to total quasi-UFP mass) and playgrounds (in the form of mineral matter, contributing about 9% to the quasi-UFP mass). The particle size distribution patterns of toxicologically relevant metals and major aerosol components was characterised, displaying two modes for most elements and components, and one mode for inorganic salts (ammonium nitrate and sulfate) and elemental carbon (EC). Regarding metals, Ni and Cr were partitioned mainly in quasi-UFPs and could thus be of interest for epidemiological studies, given their high redox properties. Exposure of children to quasi-UFP mass and chemical species was assessed by comparing the concentrations measured at urban background and traffic areas schools. Finally, three main indoor sources across all size fractions were identified by assessing indoor / outdoor ratios (I / O) of PM species used as their tracers: human activity (organic material), cleaning products, paints and plastics (Cl- source), and a metallic mixed source (comprising combinations of Cu, Zn, Co, Cd, Pb, As, V and Cr). Our results support the need to enforce targeted legislation to determine a minimum "safe" distance between major roads and newly built schools to reduce exposure to traffic-derived metals in quasi-UFPs.

  6. Reactor Physics Training

    International Nuclear Information System (INIS)

    University courses in nuclear reactor physics at the universities consist of a theoretical description of the physics and technology of nuclear reactors. In order to demonstrate the basic concepts in reactor physics, training exercises in nuclear reactor installations are also desirable. Since the number of reactor facilities is however strongly decreasing in Europe, it becomes difficult to offer to students a means for demonstrating the basic concepts in reactor physics by performing training exercises in nuclear installations. Universities do not generally possess the capabilities for performing training exercises. Therefore, SCK-CEN offers universities the possibility to perform (on a commercial basis) training exercises at its infrastructure consisting of two research reactors (BR1 and VENUS). Besides the organisation of training exercises in the framework of university courses, SCK-CEN also organizes theoretical courses in reactor physics for the education and training of nuclear reactor operators. It is indeed a very important subject to guarantee the safe operation of present and future nuclear reactors. In this framework, an understanding of the fundamental principles of nuclear reactor physics is also necessary for reactor operators. Therefore, the organisation of a basic Nuclear reactor physics course at the level of reactor operators in the initial and continuous training of reactor operators has proven to be indispensable. In most countries, such training also results from the direct request from the safety authorities to assure the high level of competence of the staff in nuclear reactors. The objectives this activity are: (1) to provide training and education activities in reactor physics for university students and (2) to organise courses in nuclear reactor physics for reactor operators

  7. The History of Pedagogy at the University of Barcelona: a program of the subject, for the year 1958-59, that Joaquín Carreras Artau taught La Historia de la Pedagogía en la Universidad de Barcelona: programa de la asignatura, correspondiente al curso 1958-59, que impartía Joaquín Carreras Artau

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    Ángel C. MOREU CALVO

    2012-11-01

    Full Text Available The History of the Pedagogy of teacher Carreras Artau, at the University of Barcelona, as explained in 1958, meets the key criteria in Franco’s Spain, and idealistic positions in close dependence on the philosophy and history.La Historia de la Pedagogía del profesor Carreras Artau, en la Universidad de Barcelona, tal como se explica en 1958, responde a los criterios dominantes en la España del franquismo, y a posiciones idealistas, en estrecha dependencia con la filosofía y su historia.

  8. Safeguarding research reactors

    International Nuclear Information System (INIS)

    The report is organized in four sections, including the introduction. The second section contains a discussion of the characteristics and attributes of research reactors important to safeguards. In this section, research reactors are described according to their power level, if greater than 25 thermal megawatts, or according to each fuel type. This descriptive discussion includes both reactor and reactor fuel information of a generic nature, according to the following categories. 1. Research reactors with more than 25 megawatts thermal power, 2. Plate fuelled reactors, 3. Assembly fuelled reactors. 4. Research reactors fuelled with individual rods. 5. Disk fuelled reactors, and 6. Research reactors fuelled with aqueous homogeneous fuel. The third section consists of a brief discussion of general IAEA safeguards as they apply to research reactors. This section is based on IAEA safeguards implementation documents and technical reports that are used to establish Agency-State agreements and facility attachments. The fourth and last section describes inspection activities at research reactors necessary to meet Agency objectives. The scope of the activities extends to both pre and post inspection as well as the on-site inspection and includes the examination of records and reports relative to reactor operation and to receipts, shipments and certain internal transfers, periodic verification of fresh fuel, spent fuel and core fuel, activities related to containment and surveillance, and other selected activities, depending on the reactor

  9. A complex small RNA repertoire is generated by a plant/fungal-like machinery and effected by a metazoan-like Argonaute in the single-cell human parasite Toxoplasma gondii.

    Science.gov (United States)

    Braun, Laurence; Cannella, Dominique; Ortet, Philippe; Barakat, Mohamed; Sautel, Céline F; Kieffer, Sylvie; Garin, Jérôme; Bastien, Olivier; Voinnet, Olivier; Hakimi, Mohamed-Ali

    2010-05-27

    In RNA silencing, small RNAs produced by the RNase-III Dicer guide Argonaute-like proteins as part of RNA-induced silencing complexes (RISC) to regulate gene expression transcriptionally or post-transcriptionally. Here, we have characterized the RNA silencing machinery and exhaustive small RNAome of Toxoplasma gondii, member of the Apicomplexa, a phylum of animal- and human-infecting parasites that cause extensive health and economic damages to human populations worldwide. Remarkably, the small RNA-generating machinery of Toxoplasma is phylogenetically and functionally related to that of plants and fungi, and accounts for an exceptionally diverse array of small RNAs. This array includes conspicuous populations of repeat-associated small interfering RNA (siRNA), which, as in plants, likely generate and maintain heterochromatin at DNA repeats and satellites. Toxoplasma small RNAs also include many microRNAs with clear metazoan-like features whose accumulation is sometimes extremely high and dynamic, an unexpected finding given that Toxoplasma is a unicellular protist. Both plant-like heterochromatic small RNAs and metazoan-like microRNAs bind to a single Argonaute protein, Tg-AGO. Toxoplasma miRNAs co-sediment with polyribosomes, and thus, are likely to act as translational regulators, consistent with the lack of catalytic residues in Tg-AGO. Mass spectrometric analyses of the Tg-AGO protein complex revealed a common set of virtually all known RISC components so far characterized in human and Drosophila, as well as novel proteins involved in RNA metabolism. In agreement with its loading with heterochromatic small RNAs, Tg-AGO also associates substoichiometrically with components of known chromatin-repressing complexes. Thus, a puzzling patchwork of silencing processor and effector proteins from plant, fungal and metazoan origin accounts for the production and action of an unsuspected variety of small RNAs in the single-cell parasite Toxoplasma and possibly in other

  10. El pressupost de cultura de l'Ajuntament de Barcelona de 1908: un referent pedagògic The 1908 Budget of the Culture Office of the Barcelona City Council: A Pedagogical Reference El presupuesto de Cultura del Ayuntamiento de Barcelona de 1908: un referente pedagógico

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    Raquel de la Arada Acebes

    2008-01-01

    Full Text Available En aquest article l'autora revisa la gènesi i evolució del pressupost de Cultura de l'Ajuntament de Barcelona de 1908 que, entre altres aspectes, proposava una escola pública de qualitat, a càrrec del municipi, amb els següents principis pedagògics: coeducació, ensenyament en llengua catalana i neutralitat religiosa. La difícil conjuntura política del moment va impedir que aquest pressupost reexís després d'una llarga disputa pública i social. Ben mirat, aquell projecte obeïa a una política cultural de l'esquerra catalanista i republicana que es movia ideològicament en l'òrbita del modernisme cultural i pedagògicament, en el moviment renovador de l'Escola Nova, que va arrelar amb força a casa nostra, amb l'ajut i col·laboració de la Institución Libre de Enseñanza. En conseqüència, el Pressupost Extraordinari de Cultura era el resultat d'una mentalitat basada en una política cultural que havia de proporcionar a la ciutat de Barcelona -i per extensió, a tot Catalunya- un model d'escola pública adequat als criteris del modernisme cultural i del regeneracionisme polític. ______________________________________________________________________________________________________________________________________________________________________________________ Dans cet article, l'auteur révise la genèse ainsi que l'évolution du budget de la culture de la Mairie de Barcelone de l'année 1908 qui proposait, entre autres aspects, une école publique de qualité, à la charge de la municipalité, et qui envisageait les principes pédagogiques suivants: coéducation, enseignement en langue catalane et neutralité religieuse. La difficile conjoncture politique du moment empêcha l'exécution de ce budget, après une longue querelle publique et sociale. Tout bien considéré, ce projet obéissait à une politique culturelle de la gauche catalaniste et républicaine qui se déplaçait idéologiquement dans la sphère du modernisme

  11. Reactor Physics Programme

    Energy Technology Data Exchange (ETDEWEB)

    De Raedt, C

    2000-07-01

    The Reactor Physics and Department of SCK-CEN offers expertise in various areas of reactor physics, in particular in neutronics calculations, reactor dosimetry, reactor operation, reactor safety and control and non-destructive analysis on reactor fuel. This expertise is applied within the Reactor Physics and MYRRHA Research Department's own research projects in the VENUS critical facility, in the BR1 reactor and in the MYRRHA project (this project aims at designing a prototype Accelerator Driven System). Available expertise is also used in programmes external to the Department such as the reactor pressure steel vessel programme, the BR2 reactor dosimetry, and the preparation and interpretation of irradiation experiments. Progress and achievements in 1999 in the following areas are reported on: (1) investigations on the use of military plutonium in commercial power reactors; (2) neutron and gamma calculations performed for BR-2 and for other reactors; (3) the updating of neutron and gamma cross-section libraries; (4) the implementation of reactor codes; (6) the management of the UNIX workstations; and (6) fuel cycle studies.

  12. Correlatos psicosociales de la adhesión al tratamiento antirretroviral en el Centro Penitenciario de hombres de Barcelona Psychosocial correlates of the adherence to antirretroviral treatment of men in penitentiary center of Barcelona

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    F. Herraiz

    2008-02-01

    Full Text Available Objetivo: Evaluar la adhesión terapéutica al TARGA de los pacientes reclusos con VIH y su relación con diferentes tipos de variables. Material y Método: Estudio longitudinal, realizado en el Centro Penitenciario de Hombres de Barcelona. Se utilizaron las bases de datos del centro, una entrevista semiestructurada, que valoraba variables sociodemográficas, penales/penitenciarias, clínicas y características del tratamiento, así como cuestionarios sobre creencias y estados emocionales. También se evaluó la adhesión al inicio del estudio, a los tres y a los seis meses. Resultados: Los internos presentaron un bajo apoyo social; un acuerdo medio respecto de los cuidados recibidos por el personal médico y sanitario; consideraron la complejidad del tratamiento como alta y concedieron una moderada relevancia a los efectos secundarios; presentaron un elevado acuerdo respecto a los beneficios que les podían reportar seguir el tratamiento, una percepción moderada sobre la severidad de la enfermedad y manifestaron una elevada autoeficacia en el seguimiento del tratamiento. Respecto a las variables emocionales mostraron una baja tensión, depresión, cólera y fatiga. La adhesión a los antirretrovirales desde el inicio al final del estudio no ha variado a lo largo del estudio. Las variables socio-cognitivas que correlacionaron con la adhesión en los diferentes momentos del estudio son la autoeficacia, los beneficios percibidos, la complejidad del tratamiento y los efectos secundarios. Los estados emocionales que correlacionaban con la adhesión eran la depresión y la fatiga. Discusión: La relación entre autoeficacia y adhesión es un resultado repetido en los estudios sobre la predicción de la adhesión al TARGA. Las relaciones de la fatiga y de la tristeza/depresión con la adhesión son del tipo esperado.Objective: to assess therapeutic adherence to HAART amongst HIV positive inmates and its likely relationship with sets of different

  13. Ship propulsion reactors technology

    International Nuclear Information System (INIS)

    This paper takes the state of the art on ship propulsion reactors technology. The french research programs with the corresponding technological stakes, the reactors specifications and advantages are detailed. (A.L.B.)

  14. Undergraduate reactor control experiment

    International Nuclear Information System (INIS)

    A sequence of reactor and related experiments has been a central element of a senior-level laboratory course at Pennsylvania State University (Penn State) for more than 20 yr. A new experiment has been developed where the students program and operate a computer controller that manipulates the speed of a secondary control rod to regulate TRIGA reactor power. Elementary feedback control theory is introduced to explain the experiment, which emphasizes the nonlinear aspect of reactor control where power level changes are equivalent to a change in control loop gain. Digital control of nuclear reactors has become more visible at Penn State with the replacement of the original analog-based TRIGA reactor control console with a modern computer-based digital control console. Several TRIGA reactor dynamics experiments, which comprise half of the three-credit laboratory course, lead to the control experiment finale: (a) digital simulation, (b) control rod calibration, (c) reactor pulsing, (d) reactivity oscillator, and (e) reactor noise

  15. Reactor System Design

    International Nuclear Information System (INIS)

    SMART NPP(Nuclear Power Plant) has been developed for duel purpose, electricity generation and energy supply for seawater desalination. The objective of this project IS to design the reactor system of SMART pilot plant(SMART-P) which will be built and operated for the integrated technology verification of SMART. SMART-P is an integral reactor in which primary components of reactor coolant system are enclosed in single pressure vessel without connecting pipes. The major components installed within a vessel includes a core, twelve steam generator cassettes, a low-temperature self pressurizer, twelve control rod drives, and two main coolant pumps. SMART-P reactor system design was categorized to the reactor coe design, fluid system design, reactor mechanical design, major component design and MMIS design. Reactor safety -analysis and performance analysis were performed for developed SMART=P reactor system. Also, the preparation of safety analysis report, and the technical support for licensing acquisition are performed

  16. El tabaco en los establecimientos de restauración y hostelería: estudio observacional en Barcelona, 2008 Smoking in the hospitality sector: an observational study in Barcelona (Spain, 2008

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    Joan R. Villalbí

    2010-01-01

    Full Text Available Objetivos: Describir la situación real del consumo de tabaco en los locales de restauración y hostelería tras la ley de medidas sanitarias frente al tabaquismo, que establece exenciones en este sector a la prohibición general de fumar en el trabajo desde 2006. Métodos Estudio observacional descriptivo en Barcelona en 2008, con muestreo por conglomerados de 1130 establecimientos. Se presentan los resultados estratificados por tipo de establecimiento. Resultados: En el 85,7% de los comercios con degustación (panaderías, pastelerías… y el 85% de los locales de comida rápida se prohíbe fumar. El 40% de los restaurantes son libres de humo u ofrecen zonas separadas. En los bares-cafeterías y cafeterías-restaurantes (locales más abundantes no se suele prohibir fumar. Hay mayor oferta de locales sin humo en los distritos céntricos y centros comerciales. Conclusiones: En un 75,4% de los locales se permite fumar libremente. Estos resultados muestran las limitaciones de la ley.Objectives: To describe the actual presence of smoking in restaurant and hospitality premises after the smoking prevention act banning smoking in workplaces came into force in 2006, with wide exemptions in this sector. Methods: We performed an observational, descriptive study in Barcelona (Catalonia, Spain in 2008 based on cluster sampling, with 1130 premises. The results were stratified by premise type. Results: Up to 85.7% of food shops allowing consumption within their premises (bakeries, pastry shops… ban smoking, as well as 85% of fast food establishments. Among restaurants, 40% are smoke-free or have separate smoking areas. Bar-cafés and café-restaurants (the most abundant premises usually allow smoking. There are more smoke-free options in central districts and in shopping malls. Conclusions: Up to 75.4% of all premises allow smoking freely. These results show the limitations of the law.

  17. LMFBR type reactor

    Energy Technology Data Exchange (ETDEWEB)

    Kawakami, Hiroto

    1995-02-07

    A reactor container of the present invention has a structure that the reactor container is entirely at the same temperature as that at the inlet of the reactor and, a hot pool is incorporated therein, and the reactor container has is entirely at the same temperature and has substantially uniform temperature follow-up property transiently. Namely, if the temperature at the inlet of the reactor core changes, the temperature of the entire reactor container changes following this change, but no great temperature gradient is caused in the axial direction and no great heat stresses due to axial temperature distribution is caused. Occurrence of thermal stresses caused by the axial temperature distribution can be suppressed to improve the reliability of the reactor container. In addition, since the laying of the reactor inlet pipelines over the inside of the reactor is eliminated, the reactor container is made compact and the heat shielding structures above the reactor and a protection structure of container walls are simplified. Further, secondary coolants are filled to the outside of the reactor container to simplify the shieldings. The combined effects described above can improve economical property and reliability. (N.H.).

  18. Fossil nuclear reactors

    Energy Technology Data Exchange (ETDEWEB)

    Maurette, M.

    1976-01-01

    The discussion of fossil nuclear reactors (the Oklo phenomenon) covers the earth science background, neutron-induced isotopes and reactor operating conditions, radiation-damage studies, and reactor modeling. In conclusion possible future studies are suggested and the significance of the data obtained in past studies is summarized. (JSR)

  19. Trends in socioeconomic inequalities in mortality over a twenty-two-year period in the city of Barcelona (Spain) [Veintidós años de evolución de las desigualdades socioeconómicas en la mortalidad en la ciudad de Barcelona

    NARCIS (Netherlands)

    A. Dalmau-Bueno (Albert); A. García-Altés (Anna); M. Mardí-Dell'Olmo; K. Pérez (Katherine); A.E. Kunst (Anton); C. Borrell (Carme)

    2009-01-01

    textabstractObjective: To analyze the trend in socioeconomic inequalities in all-cause mortality in Barcelona from 1983 to 2004. Methods: We performed an ecological study of trends over 4 cross-sections (1983-1988, 1989-1994, 1995-1999 and 2000-2004), with the basic health area (BHA) as the unit of

  20. Responsabilidad y marcas de calidad conferencia pronunciada en Barcelona, el 11 de diciembre de 1974 en el II Congreso Nacional de la Calidad

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    Vila, Miguel

    1975-04-01

    Full Text Available This is a reproduction of the lecture held by the author at the 11 National Congress of Quality in Barcelona, Spain, which gives account of concepts, projects, works and plans for the future, and information is given on completed works and the philosophy of a Working Group CIETSID, with the participation of Instituto Eduardo Torroja, CENIM, AECC, of the official organisations, professional colleges, UNESID and manufacturers.Se reproduce aquí la conferencia pronunciada por el autor en el II Congreso Nacional de la Calidad, en Barcelona (España, en la que se exponen conceptos, proyectos, realizaciones y planes para el futuro, representando las inquietudes del sector, y se transmiten las obras concretas y la filosofía de un grupo de trabajo CIETSID, con la participación del Instituto Eduardo Torreja, CENIM, A.E.C.C., de los organismos oficiales, colegios profesionales, UNESID y fabricantes.

  1. ¿Por qué Barcelona? : Análisis de la evolución del turismo en la ciudad

    OpenAIRE

    Batista Terrones, Elena; Buenamañana del Fresno, Marta; Cordero Codera, Irene; Martínez Domingo, Mª Cinta

    2012-01-01

    “El hotel vela de Ricardo Bofill echa por fin raíces en la nueva bocana” (ElPeriódico; 29 de mayo de 2006); “Bread&Butter deja en BCN 80 millones de euros” (ElPeriódico; 19 de enero de 2007); “Barcelona promociona su oferta de playas en todo elmundo” (El Periódico; 25 de marzo de 2007);… En las portadas y páginas de diarios ygacetas es donde comenzó todo, donde nació y se gestó una idea que posteriormentepasaría a ser nuestro proyecto final.Durante los últimos años la ciudad de Barcelona ha v...

  2. Repercusiones inesperadas de una transformación urbana ralentizada por la crisis. El retorno de los artistas al distrito creativo 22@Barcelona

    Directory of Open Access Journals (Sweden)

    Daniel Paül I Agustí

    2014-01-01

    Full Text Available Los cambios en la industria generalizados durante la segunda mitad del siglo XX fueron especialmente visibles en algunas áreas, como el Poblenou de Barcelona. En el año 2000 el Ayuntamiento de Barcelona impulsó un gran proyecto de transformación de este antiguo barrio industrial. Un proyecto urbanístico, económico y social que aspiraba a crear un nuevo distrito de la innovación. Tras unos inicios en los que se sucedían las grandes inversiones inmobiliarias, la crisis económica ralentizó algunos de los proyectos inicialmente previstos y anuló otros. Esta nueva situación impulsó una reflexión sobre las transformaciones emprendidas e hizo posible que algunos colectivos, como por ejemplo los artistas, se integrasen mejor en el proyecto. En este sentido, el caso del Poblenou de Barcelona se contrapone en cierta medida a las tendencias habituales en otras ciudades, donde los artistas son atraídos en las fases iniciales de la transformación y expulsados en las etapas más avanzadas. Esta expulsión de artistas también se dio en el Poblenou. La novedad en Barcelona reside en el retorno de los artistas al barrio a partir del año 2008, coincidiendo con la crisis inmobiliaria. Este retorno supone un cambio respecto a los procesos tradicionalmente descritos de expulsión de artistas.

  3. Aspectos metodológicos de las encuestas de salud por entrevista: aportaciones de la Encuesta de Salud de Barcelona 2006

    Directory of Open Access Journals (Sweden)

    Carme Borrell

    2008-05-01

    Full Text Available Las encuestas de salud son el procedimiento de elección para obtener información de la población de una determinada zona sobre fenómenos subjetivos relacionados con la salud tales como la existencia de síntomas actuales o pasados, limitaciones o incapacidades generadas por problemas de salud, hábitos personales, exposiciones a situaciones de riesgo. Este artículo tiene por objetivo presentar los pasos seguidos en el diseño de una encuesta de salud y explicar algunos de los instrumentos utilizados en la Encuesta de Barcelona de 2006. Se presentan las novedades de la Encuesta de Salud de Barcelona 2006 relacionadas con: la clase social neomarxista de EO Wright, los trabajos productivo y reproductivo, la inmigración extranjera, la discriminación percibida, la utilización de servicios sanitarios y finalmente, el cuestionario específico para menores.Health interview surveys are used to study subjective health problems of the population sucg as the existence of symptoms, limitations or disabilities generated by health problems, health behaviours, exposures, risk situations, etc. The objective of this article is to present the steps followed in the design of health interview surveys and to explain some of the aspects analyzed in the 2006 Barcelona Health Survey. It presents new aspects of the Barcelona Health Survey related to the neo-marxist social class of EO Wright, productive and reproductive labor, foreign immigration, perceived discrimination, health services utilization and, finally, health questionnaire for children.

  4. Presence of emerging contaminants priority substances and heavy metals in treated wastewater and groundwater in the Llobregat delta area (Barcelona, Spain)

    OpenAIRE

    Teijón Ávila, Gloria; Tamoh, Karim; Candela Lledó, Lucila

    2011-01-01

    Initial sampling results of emerging contaminants at the Llobregat delta deep aquifer (Barcelona, Spain) are presented. Among micro contaminants selected are 82 pharmaceuticals (antibiotics, lipid regulation agents, analgesic/anti-inflammatory drugs, etc), 18 personal care products (sunscreen agents, preservatives and disinfectants/antiseptics), 4 metals, 44 pesticides, 6 volatile priority pollutants, 16 PAHS and dioxins. Monitoring programme consisted on periodical water sampling from mun...

  5. La labor de Enric Granados en el proceso de la recepción de la música de Bach en Barcelona

    OpenAIRE

    Bonastre, Francesc

    2001-01-01

    The musical personality of Enric Granados (1867-1916) includes many aspects, especially piano interpretation and symphonic, scenic, "liederistic" and piano composition, as well as pedagogy, together with the foundation of the Granados Academy (1900). He got to know Bach's music through Ch. W. Bériot in Paris and F. Pedrell in Barcelona. He spread Bach's music as a soloist, director and pedagogue, together with other important disciples of Pedrell: J. Albéniz, L. Millet and H. Angles. The arti...

  6. Excess Heat-Related Mortality in Micro-Urban Heat Islands: A Case-only Study in Barcelona. GI_Forum 2013 – Creating the GISociety|

    OpenAIRE

    Glutting, John-Paul

    2013-01-01

    Background: Extreme heat events (EHE) are of increasing public health concern. In urban areas, micro-urban heat islands (MUHI) raise the possibility of increased mortality risk. This study identified MUHI in the city of Barcelona, Spain, using Landsat 7 thermal infrared imagery and overlaid them onto at-home deaths between 2000-2003, identified from a mortality registry and geocoded using the Google API. Hot days were defined as days with mean minimum temperatures above the 90th percentile of...

  7. Les Polítiques Inmigratòries de la Unió Europea i el Procès de Barcelona.

    OpenAIRE

    Olivé Elias, Maria

    2007-01-01

    It would be necessary to question which aspects of the Barcelona Process are identified as the weakest and therefore need to be proposed a solution for improvement. Below, some appreciations are made with respect to all the EuroMediterranean Process, that must be taken into account when analyzed from a political or juridical point of view, and which are sometimes misregarded. Moreover, this research includes some general, political and juridical proposals, which have been elaborated in order ...

  8. Les relacions epistolars de les ciutats de Barcelona, València i Palma entre els segles XVI i XVII (c. 1510 – c. 1630

    Directory of Open Access Journals (Sweden)

    Vicent Baydal Sala

    2013-06-01

    Full Text Available Resum: L’article analitza les epístoles enviades pels Consells municipals de Barcelona, Valènciai Palma entre els segles XVI i XVII, a través de l’estudi detallat de tres talls cronològics triennalsentre 1510 i 1629. En concret, s’hi atén comparativament a quatre factors: les raons que motivaren la tramesa de cartes per part dels governs urbans, el tipus de destinataris a les quals s’adreçaren, la xarxa de connexions territorials que el seu enviament ocasionà i les formes epistolars emprades pels escrivans en la seua confecció. Així, s’hi pot observar que, compartint una mateixa cultura epistolar, l’activitat de cada Consell fou ben diversa en funció del seu propi poder polític i la seua relació amb la monarquia.Paraules clau: Epístoles, Edat Moderna, Barcelona, València, PalmaAbstract: This paper examines the epistles sent by the City Councils of Barcelona, Valènciaand Palma between the 16th and 17th centuries through the detailed study of three triennialchronological sections between 1510 and 1629. Specifically, it deals comparatively with four issues:the reasons that motivated the letters, the type of addressees, the network of territorial connectionsestablished by the sending of the letters and the epistolary forms used by the scribes. It is observedthat, sharing the same epistolary culture, the activity of each Council was very diverse dependingon its own political power and its relationship with the monarchy.Keywords: Epistles, Early Modern Ages, Barcelona, Valencia, Palma

  9. Marketing promocional de los servicios digitales y de los recursos de información de las bibliotecas y unidades del CRAI de la Universidad de Barcelona

    OpenAIRE

    Coll, Josep; Magdaleno, Isabel; Miró, Laura

    2007-01-01

    The main focus of the Marketing Group of the The Resource Center for Learning and Research (CRAI) of the University of Barcelona (UB) is to promote the services and resources of our libraries and units and to improve the use of the Digital Library. In this conference poster, the group explains how they work and show some samples of products used in different marketing campaigns.

  10. Nuclear reactor repairing device

    International Nuclear Information System (INIS)

    Purpose: To enable free repairing of an arbitrary position in an LMFBR reactor. Constitution: A laser light emitted from a laser oscillator installed out of a nuclear reactor is guided into a portion to be repaired in the reactor by using a reflecting mirror, thereby welding or cutting it. The guidance of the laser out of the reactor into the reactor is performed by an extension tube depending into a through hole of a rotary plug, and the guidance of the laser light into a portion to be repaired is performed by the transmitting and condensing action of the reflecting mirror. (Kamimura, M.)

  11. Nuclear reactor physics

    CERN Document Server

    Stacey, Weston M

    2010-01-01

    Nuclear reactor physics is the core discipline of nuclear engineering. Nuclear reactors now account for a significant portion of the electrical power generated worldwide, and new power reactors with improved fuel cycles are being developed. At the same time, the past few decades have seen an ever-increasing number of industrial, medical, military, and research applications for nuclear reactors. The second edition of this successful comprehensive textbook and reference on basic and advanced nuclear reactor physics has been completely updated, revised and enlarged to include the latest developme

  12. Light water reactor safety

    CERN Document Server

    Pershagen, B

    2013-01-01

    This book describes the principles and practices of reactor safety as applied to the design, regulation and operation of light water reactors, combining a historical approach with an up-to-date account of the safety, technology and operating experience of both pressurized water reactors and boiling water reactors. The introductory chapters set out the basic facts upon which the safety of light water reactors depend. The central section is devoted to the methods and results of safety analysis. The accidents at Three Mile Island and Chernobyl are reviewed and their implications for light wate

  13. La reinvención de la política cultural a escala local: el caso de Barcelona

    Directory of Open Access Journals (Sweden)

    Arturo Rodríguez Morató

    2005-08-01

    Full Text Available Entre su voluntariosa instauración en los años 60 y el giro economicista que tuvo en la década de los 80, las políticas culturales cubrieron un ciclo de progresvo agotamiento y desestructuración. Pero esta devira supuso paralelamente umimportante realce de la política cultural local. Esta tendencia se vio luego muy potencial por el giro empreededor de la política urbana, que ha hecho de la cultura un elemento central de las nuevas estrategias de desarrollo territorial. Gracias a este impulso se está conformando últimamente un nuevo modelo de política cultural en el ámbito local que viene a sustituir al decliante paradigma clásico de las políticas culturales, que era de base nacional. El artículo muestra la lógica de este processo de sustitución y examina en concreto el proceso de reinvención de la política cultural a escala local. Este examen se centra en el caso de Barcelona, que es un caso ejemplar a este respecto.After its inception in the 1960's and until the economic turn of the 1980's, the cutural policy has completed a cycle of increasing debasement. However, at the same time, this evolution has also entailed an important enhancement of the local cultural policy. Afterwards, this trend has been even more exacerbated by the entrepreneurial turn of the urban policy, which has turned culture into a central element of the new strategies of territorial development. Thanks to this impulse, a new model of cultural policy is lately taking shape in the local sphere substituting the declining classical paradigm of cultural policy of national scope. The article shows the logic of this substitution process and examines, in particular, the cultural policy recreation process in the local sphere. This analysis focuses on the case of Barcelona, which is an exemplary case in the this regard.

  14. PREFACE: Lectures from the European RTN Winter School on Strings, Supergravity and Gauge Fields, Barcelona, 12-16 January 2004

    Science.gov (United States)

    Russo, Jorge G.

    2005-04-01

    This issue of Classical and Quantum Gravity contains the proceedings of the RTN European Winter School on Strings, Supergravity and Gauge Fields, which was held at the University of Barcelona, Spain, between 12-16 January 2004. The School was part of the RTN programme The Quantum Structure of Spacetime and the Geometric Nature of Fundamental Interactions of the European Union. It was attended by 181 registered participants. The lectures contain a pedagogical introduction to topics in string theory which are currently under active investigation. They were targeted mainly at students near the end of their PhD, and young postdocs and researchers. The topics were carefully selected to cover phenomenological aspects of string theory, covered by the lectures by A Uranga (Intersecting Brane Worlds) and U Danielsson (String Theory and Cosmology), as well as more fundamental and theoretical issues, covered by N Nekrasov (Non-perturbative Aspects of Supersymmetric Gauge Theories), P Townsend (Branes in Field Theory, not included in these proceedings) and Jaume Gomis (Tachyon Condensation: Towards Time Dependent Backgrounds and Holography). We must thank the lecturers for their admirable exposition of these interesting subjects. We hope that the readers of these proceedings receive these lectures with the same enthusiasm as they were received by all students and physicists that attended the School. Following the tradition of the RTN schools there were, in addition to the lectures, five workgroups on more specialized subjects, which aimed to discuss scientific problems of general interest to our network, facilitate communication between the various groups and, hopefully, help start new collaborations. They were Integrable Structures of the Gauge/String Correspondence led by G Arutyunov and B Stefanski Closed Timelike Curves in Supergravity and String Theory led by N Drukker and L Maoz Black Objects in Higher Dimensional General Relativity and Supergravity led by H Elvang and T

  15. La labor de Enric Granados en el proceso de la recepción de la música de Bach en Barcelona

    Directory of Open Access Journals (Sweden)

    Bonastre, Francesc

    2001-12-01

    Full Text Available The musical personality of Enric Granados (1867-1916 includes many aspects, especially piano interpretation and symphonic, scenic, "liederistic" and piano composition, as well as pedagogy, together with the foundation of the Granados Academy (1900. He got to know Bach's music through Ch. W. Bériot in Paris and F. Pedrell in Barcelona. He spread Bach's music as a soloist, director and pedagogue, together with other important disciples of Pedrell: J. Albéniz, L. Millet and H. Angles. The article includes 14 concerts in Barcelona related to Granados (1895-1912.

    La personalidad musical de Enric Granados (1867-1916 comprende numerosas facetas, especialmente la interpretación pianística, la composición sinfónica, escénica, liederística y pianística, y la pedagogía, con la fundación de la Academia Granados (1900. Conoce la música de Bach a través de Ch. W. Bériot en París, y de F. Pedrell en Barcelona; se convierte en uno de los difusores de la música bachiana como concertista, director y pedagogo, al lado de otros destacados discípulos de Pedrell: I. Albéniz, L. Millet e H. Angles. El artículo recoge 14 conciertos barceloneses relacionados con Granados (1895-1912.

  16. EDITORIAL: Proceedings of the 7th International LISA Symposium, Barcelona, Spain, 16-20 June 2008 Proceedings of the 7th International LISA Symposium, Barcelona, Spain, 16-20 June 2008

    Science.gov (United States)

    Lobo, Alberto; Sopuerta, Carlos F.

    2009-05-01

    In June 2006 the LISA International Science Team (LIST) accepted the bid presented by the Institut d'Estudis Espacials de Catalunya (IEEC) to host the 7th International LISA Symposium. This was during its 11th meeting at the University of Maryland, just before the 6th edition of the symposium started at NASA's Goddard Space Flight Center. The 7th International LISA Symposium took place in the city of Barcelona, Spain, 16-20 June, 2008, in the premises of CosmoCaixa, a modern science museum located in the hills near Tibidabo. Almost 240 delegates registered for the event, a record breaking figure compared to previous editions of the symposium. Many of the most renowned world experts in LISA, gravitational wave science, and astronomy, as well as engineers, attended LISA #7 and produced state of the art presentations, while everybody benefited from the opportunity to have live discussions during the week in a friendly environment. The programme included 31 invited plenary lectures in the mornings, and eight parallel sessions in the afternoons. These were classified into seven major areas of research: LISA Technology, LISA PathFinder, LISA PathFinder Data Analysis, LISA Data Analysis, Gravitational Wave Sources, Cosmology and Fundamental Physics with LISA and Other Gravitational Wave Detectors. Abstracts for 138 communications were received, from which a selection was made by the session convenors which would fit time constraints. Up to 63 posters completed the scientific programme. More details on the programme, including some of the talks, can be found at the symposium website:http://www.ice.cat/research/LISA_Symposium. There was, however, a remarkable add-on: Professor Clifford Will delivered a startling presentation to the general public, who completely filled the Auditori—the main conference room, 320 seats—and were invited to ask questions to the speaker who boldly guided them through the daunting world of Black Holes, Waves of Gravity, and other Warped Ideas

  17. Seawater intrusion barrier and artificial recharge in the deltaic Llobregat aquifer (Barcelona, Spain); La barrera hidraulica contra la intrusion marina y la recarga artificial en el acuifero del Llobregat (Barcelona, Espana)

    Energy Technology Data Exchange (ETDEWEB)

    Ortuno Gobern, F.; Ninerola Pla, J. M.; Armenter Ferrando, J. L.; Molinero Huguet, J.

    2009-07-01

    The main aquifer of the Llobregat Delta (Barcelona, Spain) is affected by seawater intrusion processes since 1970. The Catalan Water Agency is currently promoting several actions of enhanced aquifer recharge, including the construction of a positive hydraulic barrier in order to stop the advance of the seawater intrusion. Such a positive hydraulic barrier works by injecting reclaimed water in 14 wells. This is the first time that a project of this type is performed in Spain, and it is also pioneer in Europe. The positive hydraulic barrier produces the rise of the groundwater head near the coast and avoids seawater penetration inland. The injected reclaimed water comes from the WWTP of the Baix Llobregat after passing through several treatments (ultrafiltration, osmosis and disinfection). The pilot phase of the project has been working during the last 2 years, showing highly positive results. Substantial improvement of the groundwater quality has been observed in wells surrounding the injection points and no clogging has been appeared. The second phase of the project is currently under construction. (Author) 13 refs.

  18. Perfil de la casuística hospitalaria de la población inmigrante en Barcelona Profile of the hospital case mix of the immigrant population in Barcelona, Spain

    Directory of Open Access Journals (Sweden)

    F. Cots

    2002-10-01

    Full Text Available Objetivo: A pesar de que en los últimos 5 años la población inmigrante se ha triplicado en ciudades como Barcelona, hasta el momento no se ha evaluado de forma rigurosa el impacto de este colectivo en el sistema sanitario. El objetivo del presente estudio ha sido comparar el perfil de la hospitalización de la población inmigrante con la autóctona, desde el punto de vista de la casuística, gravedad, características demográficas y consumo de estancias. Material y métodos: Se han analizado las 15.057 altas del Hospital del Mar de Barcelona en el año 2000. Este hospital asiste el 60% de los ingresos hospitalarios del distrito de Ciutat Vella, distrito que presentaba en el año 2000 un porcentaje de inmigrantes residentes del 21%. Se han comparado las características sociodemográficas y de casuística de los pacientes en razón de ser o no inmigrantes. También se ha comparado el consumo de recursos hospitalarios teniendo en cuenta la edad, la casuística (grupos relacionados por el diagnóstico y la gravedad (severidad, complicaciones y comorbilidades de la patología atendida. Resultados: La población inmigrante ha presentado una casuística distinta de la autóctona por la marcada diferencia en la edad y por su mayor tasa de fecundidad. El 33% de los ingresos de inmigrantes han sido partos. El coste medio de las altas de inmigrantes de países de renta baja valorado en consumo de estancias hospitalarias, ha sido un 30% menor que el del resto de las altas. Una vez ajustadas la edad, la casuística y la severidad, el consumo de estancias hospitalarias en la población inmigrante ha sido significativamente menor. La diferencia se ha cifrado en un 5% cuando sólo se ha ajustado por patología y en un 10% cuando han sido considerados todos los factores. Conclusiones: Las diferencias en la casuística vienen marcadas por la edad y por las diferencias socioculturales. La pirámide de edad de la población hospitalaria inmigrante recompone

  19. Spinning fluids reactor

    Science.gov (United States)

    Miller, Jan D; Hupka, Jan; Aranowski, Robert

    2012-11-20

    A spinning fluids reactor, includes a reactor body (24) having a circular cross-section and a fluid contactor screen (26) within the reactor body (24). The fluid contactor screen (26) having a plurality of apertures and a circular cross-section concentric with the reactor body (24) for a length thus forming an inner volume (28) bound by the fluid contactor screen (26) and an outer volume (30) bound by the reactor body (24) and the fluid contactor screen (26). A primary inlet (20) can be operatively connected to the reactor body (24) and can be configured to produce flow-through first spinning flow of a first fluid within the inner volume (28). A secondary inlet (22) can similarly be operatively connected to the reactor body (24) and can be configured to produce a second flow of a second fluid within the outer volume (30) which is optionally spinning.

  20. In the matter of the application of the Westinghouse Electric Corporation for the export of pressurized water reactor to Asociacion Nuclear ASCO II, Barcelona, Spain

    International Nuclear Information System (INIS)

    The paper contains the text of a decision of the US NRC that the export of the ASCO nuclear power unit II to Spain would not be inimical to the common defense and security of the United States, so that there are no objections to issue the license to Westinghouse Electric Corporation. Furthermore the paper contains the dissenting opinion of Commissioner Gilinsky. (HP)

  1. Reactor Vessel Surveillance Program for Advanced Reactor

    Energy Technology Data Exchange (ETDEWEB)

    Jeong, Kyeong-Hoon; Kim, Tae-Wan; Lee, Gyu-Mahn; Kim, Jong-Wook; Park, Keun-Bae; Kim, Keung-Koo

    2008-10-15

    This report provides the design requirements of an integral type reactor vessel surveillance program for an integral type reactor in accordance with the requirements of Korean MEST (Ministry of Education, Science and Technology Development) Notice 2008-18. This report covers the requirements for the design of surveillance capsule assemblies including their test specimens, test block materials, handling tools, and monitors of the surveillance capsule neutron fluence and temperature. In addition, this report provides design requirements for the program for irradiation surveillance of reactor vessel materials, a layout of specimens and monitors in the surveillance capsule, procedures of installation and retrieval of the surveillance capsule assemblies, and the layout of the surveillance capsule assemblies in the reactor.

  2. Origin of inorganic and organic components of PM2.5 in subway stations of Barcelona, Spain.

    Science.gov (United States)

    Martins, Vânia; Moreno, Teresa; Minguillón, María Cruz; van Drooge, Barend L; Reche, Cristina; Amato, Fulvio; de Miguel, Eladio; Capdevila, Marta; Centelles, Sonia; Querol, Xavier

    2016-01-01

    The present work assesses indoor air quality in stations of the Barcelona subway system. PM2.5 concentrations on the platforms of 4 subway stations were measured during two different seasons and the chemical composition was determined. A Positive Matrix Factorization analysis was performed to identify and quantify the contributions of major PM2.5 sources in the subway stations. Mean PM2.5 concentrations varied according to the stations design and seasonal periods. PM2.5 was composed of haematite, carbonaceous aerosol, crustal matter, secondary inorganic compounds, trace elements, insoluble sulphate and halite. Organic compounds such as PAHs, nicotine, levoglucosan and aromatic musk compounds were also identified. Subway PM2.5 source comprised emissions from rails, wheels, catenaries, brake pads and pantographs. The subway source showed different chemical profiles for each station, but was always dominated by Fe. Control actions on the source are important for the achievement of better air quality in the subway environment. PMID:26189044

  3. Antropologia ao acaso dos encontros: experimentações com alguns colombianos em São Paulo e Barcelona

    Directory of Open Access Journals (Sweden)

    Rafael Estrada Mejía

    2010-02-01

    Full Text Available

    O presente artigo propõe como via de acesso à alteridade o conceito de encontro  (occursus, lapidado e polido  por Baruch Spinoza e resgatado recentemente por Gilles Deleuze. Procuro fugir do trilhado discurso da identidade e sua tediosa pretensão hermenêutica,  para tentar me aproximar de um pensamento que libera o acontecimento de seus grandes inimigos: o eu, o mundo e Deus. A partir de uma prática etnográfica, realizada entre 2007 e 2008 com colombianos em São Paulo e Barcelona, retrato alguns dos encontros que implicaram me adentrar em múltiplos devenires: estrangeiros, imigrantes, indocumentados, exilados, refugiados, místicos, agnósticos, militantes políticos, latinos, hispânicos, sul-americanos, sudacas, guerrilheiros, paramilitares, etc.

  4. Field evidence of social influence in the expression of political preferences: the case of secessionist flags in Barcelona

    CERN Document Server

    Parravano, Antonio; Tena, Jordi; Hermida, Paula

    2014-01-01

    Different models of social influence have explored the dynamics of social contagion, imitation, and diffusion of different types of traits, opinions, and conducts. However, few behavioral data indicating social influence dynamics have been obtained from direct observation in `natural' social contexts. The present research provides that kind of evidence in the case of the public expression of political preferences in the city of Barcelona, where thousands of citizens supporting the secession of Catalonia from Spain have placed a Catalan flag in their balconies. We present two different studies. 1) In July 2013 we registered the number of flags in 26% of the the city. We find that there is a large dispersion in the density of flags in districts with similar density of pro-independence voters. However, we find that the density of flags tends to be fostered in those electoral district where there is a clear majority of pro-independence vote, while it is inhibited in the opposite cases. 2) During 17 days around Ca...

  5. Do we need full mesoscale models to simulate the urban heat island? A study over the city of Barcelona.

    Science.gov (United States)

    García-Díez, Markel; Ballester, Joan; De Ridder, Koen; Hooyberghs, Hans; Lauwaet, Dirk; Rodó, Xavier

    2016-04-01

    As most of the population lives in urban environments, the simulation of the urban climate has become an important part of the global climate change impact assessment. However, due to the high resolution required, these simulations demand a large amount of computational resources. Here we present a comparison between a simplified fast urban climate model (UrbClim) and a widely used full mesoscale model, the Weather Research and Forecasting (WRF) model, over the city of Barcelona. In order to check the advantages and disadvantages of each approach, both simulations were compared with station data and with land surface temperature observations retrieved by satellites, focusing on the urban heat island. The effect of changing the UrbClim boundary conditions was studied too, by using low resolution global reanalysis data (70 km) and a higher resolution forecast model (15 km). Finally, a strict comparison of the computational resources consumed by both models was carried out. Results show that, generally, the performance of the simple model is comparable to or better than the mesoscale model. The exception are the winds and the day-to-day correlation in the reanalysis driven run, but these problems disappear when taking the boundary conditions from a higher resolution global model. UrbClim was found to run 133 times faster than WRF, using 4x times higher resolution and, thus, it is an efficient solution for running long climate change simulations over large city ensembles.

  6. Food-borne zoonotic pathogens and antimicrobial resistance of indicator bacteria in urban wild boars in Barcelona, Spain.

    Science.gov (United States)

    Navarro-Gonzalez, Nora; Casas-Díaz, Encarna; Porrero, Concepción M; Mateos, Ana; Domínguez, Lucas; Lavín, Santiago; Serrano, Emmanuel

    2013-12-27

    Wildlife is increasingly abundant in urban environments, but little is known about the zoonotic pathogens carried by these populations. Urban wild boars are of particular concern because this species is well-known as a pathogen reservoir, and thus, we studied selected zoonotic pathogens in urban wild boars in Barcelona, Spain (n=41). Salmonella enterica was found in 5.00% (95% CI 0.61-16.91) and Campylobacter coli in 4.88% (95% CI 0.6-16.53) of the animals. E. coli O157:H7 and C. jejuni were not found. Other thermophilic Campylobacter were moderately prevalent (19.51%, 95% CI 8.82-34.87). Additionally, we screened for antimicrobial resistance in indicator bacteria: resistance was most frequent in Enterococcus faecium (95% of the isolates were resistant to at least one antimicrobial agent), followed by Enterococcus faecalis (50%) and Escherichia coli (10%). For the first time resistance to linezolid in bacteria carried by wildlife is reported. These findings pose a concern for public health, and thus, further research is needed on wildlife in urban environments.

  7. Assessing visitor satisfaction with a pioneering agritourism project: vegetable tourism in the Parc Agrari del Baix Llobregat (Barcelona

    Directory of Open Access Journals (Sweden)

    Valerià Paül Carril

    2015-01-01

    Full Text Available Entre los principales cambios que se han producido en el sector turístico en los últimos años, de mención especial ha sido la aparición constante de nuevos productos que buscan satisfacer las necesidades de los turistas más exigentes. Un buen ejemplo de ello es el agroturismo, en el que el turista participa en las actividades típicas de una explotación agraria. Este estudio se centra en una variante reciente de este tipo de turismo, conocida como holeriturismo. En concreto, el análisis se lleva a cabo en un proyecto pionero en España en un parque agrario: el Parc Agrari del Baix Llobregat (Barcelona. Con base a la información obtenida de una encuesta realizada en el propio Parqu , se analiza el grado de satisfacción de los visitantes con las diversas actividades que experimentan. A través del uso de métodos estadísticos no paramétricos, el estudio busca determinar si el perfil sociodemográfico de los visitantes, y su conocimiento del concepto de turismo de verduras tienen un impacto significativo en sus valoraciones.

  8. Fast Spectrum Reactors

    CERN Document Server

    Todd, Donald; Tsvetkov, Pavel

    2012-01-01

    Fast Spectrum Reactors presents a detailed overview of world-wide technology contributing to the development of fast spectrum reactors. With a unique focus on the capabilities of fast spectrum reactors to address nuclear waste transmutation issues, in addition to the well-known capabilities of breeding new fuel, this volume describes how fast spectrum reactors contribute to the wide application of nuclear power systems to serve the global nuclear renaissance while minimizing nuclear proliferation concerns. Readers will find an introduction to the sustainable development of nuclear energy and the role of fast reactors, in addition to an economic analysis of nuclear reactors. A section devoted to neutronics offers the current trends in nuclear design, such as performance parameters and the optimization of advanced power systems. The latest findings on fuel management, partitioning and transmutation include the physics, efficiency and strategies of transmutation, homogeneous and heterogeneous recycling, in addit...

  9. Multipurpose research reactors

    International Nuclear Information System (INIS)

    The international symposium on the utilization of multipurpose research reactors and related international co-operation was organized by the IAEA to provide for information exchange on current uses of research reactors and international co-operative projects. The symposium was attended by about 140 participants from 36 countries and two international organizations. There were 49 oral presentations of papers and 24 poster presentations. The presentations were divided into 7 sessions devoted to the following topics: neutron beam research and applications of neutron scattering (6 papers and 1 poster), reactor engineering (6 papers and 5 posters), irradiation testing of fuel and material for fission and fusion reactors (6 papers and 10 posters), research reactor utilization programmes (13 papers and 4 posters), neutron capture therapy (4 papers), neutron activation analysis (3 papers and 4 posters), application of small reactors in research and training (11 papers). A separate abstract was prepared for each of these papers. Refs, figs and tabs

  10. Reactor BR2

    Energy Technology Data Exchange (ETDEWEB)

    Gubel, P

    2000-07-01

    The BR2 reactor is still SCK-CEN's most important nuclear facility. After an extensive refurbishment to compensate for the ageing of the installation, the reactor was restarted in April 1997. Various aspects concerning the operation of the BR2 Reactor, the utilisation of the CALLISTO loop and the irradiation programme, the BR2 R and D programme and the production of isotopes and of NTD-silicon are discussed. Progress and achievements in 1999 are reported.

  11. The Integral Fast Reactor

    International Nuclear Information System (INIS)

    The Integral Fast Reactor (IFR) is an innovative liquid metal reactor concept being developed at Argonne National Laboratory. It seeks to specifically exploit the inherent properties of liquid metal cooling and metallic fuel in a way that leads to substantial improvements in the characteristics of the complete reactor system. This paper describes the key features and potential advantages of the IFR concept, with emphasis on its safety characteristics. 3 refs., 4 figs., 1 tab

  12. Reactor Engineering Division annual report

    International Nuclear Information System (INIS)

    Research and development activities in the Division of Reactor Engineering in fiscal 1981 are described. The work of the Division is closely related to development of multipurpose Very High Temperature Gas Cooled Reactor and fusion reactor, and development of Liquid Metal Fast Breeder Reactor carried out by Power Reactor and Nuclear Fuel Development Corporation. Contents of the report are achievements in fields such as nuclear data and group constants, theoretical method and code development, integral experiment and analysis, shielding, reactor and nuclear instrumentation, reactor control and diagnosis, and fusion reactor technology, and activities of the Committee on Reactor Physics. (author)

  13. LMFBR type reactor

    Energy Technology Data Exchange (ETDEWEB)

    Kanbe, Mitsuru

    1997-04-04

    An LMFBR type reactor comprises a plurality of reactor cores in a reactor container. Namely, a plurality of pot containing vessels are disposed in the reactor vessel and a plurality of reactor cores are formed in a state where an integrated-type fuel assembly is each inserted to a pot, and a coolant pipeline is connected to each of the pot containing-vessel to cool the reactor core respectively. When fuels are exchanged, the integrated-type fuel assembly is taken out together with the pot from the reactor vessel in a state where the integrated-type fuel assembly is immersed in the coolants in the pot as it is. Accordingly, coolants are supplied to each of the pot containing-vessel connected with the coolant pipeline and circulate while cooling the integrated-type fuel assembly for every pot. Then, when the fuels are exchanged, the integrated type fuel assembly is taken out to the outside of the reactor together with the pot by taking up the pot from the pot-containing vessel. Then, neutron economy is improved to thereby improve reactor power and the breeding ratio. (N.H.)

  14. Identification and quantification of organic aerosol from cooking and other sources in Barcelona using aerosol mass spectrometer data

    Directory of Open Access Journals (Sweden)

    C. Mohr

    2012-02-01

    Full Text Available PM1 (particulate matter with an aerodynamic diameter <1 μm non-refractory components and black carbon were measured continuously together with additional air quality and atmospheric parameters at an urban background site in Barcelona, Spain, during March 2009 (campaign DAURE, Determination of the sources of atmospheric Aerosols in Urban and Rural Environments in the western Mediterranean. Positive matrix factorization (PMF was conducted on the organic aerosol (OA data matrix measured by an aerosol mass spectrometer, on both unit mass (UMR and high resolution (HR data. Five factors or sources could be identified: LV-OOA (low-volatility oxygenated OA, related to regional, aged secondary OA; SV-OOA (semi-volatile oxygenated OA, a fresher oxygenated OA; HOA (hydrocarbon-like OA, related to traffic emissions; BBOA (biomass burning OA from domestic heating or agricultural biomass burning activities; and COA (cooking OA. LV-OOA contributed 28% to OA, SV-OOA 27%, COA 17%, HOA 16%, and BBOA 11%. The COA HR spectrum contained substantial signal from oxygenated ions (O:C: 0.21 whereas the HR HOA spectrum had almost exclusively contributions from chemically reduced ions (O:C: 0.03. If we assume that the carbon in HOA is fossil while that in COA and BBOA is modern, primary OA in Barcelona contains a surprisingly high fraction (59% of non-fossil carbon.

    This paper presents a method for estimating cooking organic aerosol in ambient datasets based on the fractions of organic mass fragments at m/z 55 and 57: their data points fall into a V-shape in a scatter plot, with strongly influenced HOA data aligned to the right arm and strongly influenced COA data points aligned to the left arm. HR data show that this differentiation is mainly driven by the oxygen-containing ions C3H3O+ and C3H5O+, even though their contributions to m/z 55 and 57 are low compared to the

  15. Programa de restauración de áreas periurbanas, 1994-2002 en Santa Coloma de Gramenet, Barcelona

    Directory of Open Access Journals (Sweden)

    Fogue i Moya, Antoni P.

    2003-08-01

    Full Text Available San la Coloma de Gramenet is a municipality of 125.000 inhabitants located within the Metropolitan Area of Barcelona, well on its way lo sustainability: Between the fifties and the seventies a heavy wave of immigration led lo largely unplanned urban growth . This had serious impact on the surrounding natural area, where there are still spaces preserving a certain ecological value in spite of the high human pressure and pollution by solid wastes. In 1994 the City Council se t up the Sub urban Restoration Programme under taken by five successive Vocational Training centres which succesfully achieved the following goals: , The ecological restoration often sites in urban fringe areas (former uncontrolled waste tips or other degraded areas and its transformation in leisure areas for the population, carefully designed in order lo minimise their environmental impact and costs of works and maintenance. , The work training in environmentally-related professions of 215 young unemployed people of ages between 16 and 25. achieving an index of later labour insertion of 60%. , The participation of neighbourhoods civic organisations, thus improving the relationship citizens-environment, towards the ecological sustainability: Previous altitudes that had led to the degradation of the areas underwent positive change. From 1924 lo 2002 this experience has been enhanced by the adoption 01 Local Agenda 21 (approved in 1999 with the consensus of more than 80 civic organisations and the participation of the European Commission through the economic instrument LIFE (200 1.Santa Coloma de Gramenet es una ciudad de 125.000 habitantes del área metropolitana de Barcelona que ha iniciado el camino hacia la sostenibilidad. El crecimiento urbanístico no planificado. debido a la inmigración entre los años 50 y 70. provocó un fuerte impacto sobre la zona natural colindante. que aún conserva valores ecológicos a pesar de la presión antrópica y la contaminación por

  16. Perfil de la casuística hospitalaria de la población inmigrante en Barcelona

    Directory of Open Access Journals (Sweden)

    Cots F.

    2002-01-01

    Full Text Available Objetivo: A pesar de que en los últimos 5 años la población inmigrante se ha triplicado en ciudades como Barcelona, hasta el momento no se ha evaluado de forma rigurosa el impacto de este colectivo en el sistema sanitario. El objetivo del presente estudio ha sido comparar el perfil de la hospitalización de la población inmigrante con la autóctona, desde el punto de vista de la casuística, gravedad, características demográficas y consumo de estancias. Material y métodos: Se han analizado las 15.057 altas del Hospital del Mar de Barcelona en el año 2000. Este hospital asiste el 60% de los ingresos hospitalarios del distrito de Ciutat Vella, distrito que presentaba en el año 2000 un porcentaje de inmigrantes residentes del 21%. Se han comparado las características sociodemográficas y de casuística de los pacientes en razón de ser o no inmigrantes. También se ha comparado el consumo de recursos hospitalarios teniendo en cuenta la edad, la casuística (grupos relacionados por el diagnóstico y la gravedad (severidad, complicaciones y comorbilidades de la patología atendida. Resultados: La población inmigrante ha presentado una casuística distinta de la autóctona por la marcada diferencia en la edad y por su mayor tasa de fecundidad. El 33% de los ingresos de inmigrantes han sido partos. El coste medio de las altas de inmigrantes de países de renta baja valorado en consumo de estancias hospitalarias, ha sido un 30% menor que el del resto de las altas. Una vez ajustadas la edad, la casuística y la severidad, el consumo de estancias hospitalarias en la población inmigrante ha sido significativamente menor. La diferencia se ha cifrado en un 5% cuando sólo se ha ajustado por patología y en un 10% cuando han sido considerados todos los factores. Conclusiones: Las diferencias en la casuística vienen marcadas por la edad y por las diferencias socioculturales. La pirámide de edad de la población hospitalaria inmigrante recompone

  17. Variability of knapping methods and technological change in the Middle Palaeolithic of the Abric Romani (Capellades, Barcelona

    Directory of Open Access Journals (Sweden)

    Vaquero, Manuel

    1999-12-01

    Full Text Available Lithic reduction sequences are a fundamental topic in palaeolithic research, since they provide data on the behavioural capabilities of early hominids. This paper studies the variability of lithic reduction strategies in the Abric Romaní (Capellades, Barcelona. This site has an extensive stratigraphic sequence, dated between 40 and 70 ka BP. In this sequence, mostly formed by travertine deposits, 27 archaeological levels have been identified, most of them corresponding to the Middle Palaeolithic. The Middle Palaeolithic levels so far excavated (B-L are dated between 40 and 52 ka BP, and suggest a reconstruction of the behavioural patterns of the Neanderthal groups preceding the early Upper Palaeolithic. The variability of the reduction sequences in a synchronous level and the changes over time are presented in the framework of the operative field concept. The results suggest that the technological changes in the Middle Palaeolithic can be explained by technical criteria that are reflected in different domains of analysis; these criteria are related to the degree of technical knowledge invested in lithic production and the range of technical options envisaged in each archaeological level.

    Las secuencias de talla lítica constituyen un tema fundamental en la investigación del Paleolítico, ya que proporcionan datos sobre las capacidades conductuales de los primeros homínidos. Este artículo estudia la variabilidad de las estrategias de talla en el Abric Romaní (Capellades, Barcelona, yacimiento que cuenta con una amplia secuencia estratigráfica datada entre los 40 y los 70 ka BP. En dicha secuencia, formada en su mayor parte por depósitos travertínicos, se han reconocido 27 niveles de ocupación, la mayor parte de los cuales atribuidos al Paleolítico Medio. Los niveles del Paleolítico Medio excavados hasta el momento (B-L, datados entre los 40 y los 52 ka BP, han permitido una reconstrucción de los patrones conductuales de los

  18. Implementation of the Barcelona Basic Model into TOUGH-FLAC for simulations of the geomechanical behavior of unsaturated soils

    Energy Technology Data Exchange (ETDEWEB)

    Rutqvist, J.; Ijiri, Y.; Yamamoto, H.

    2010-06-01

    This paper presents the implementation of the Barcelona Basic Model (BBM) into the TOUGH-FLAC simulator analyzing the geomechanical behavior of unsaturated soils. We implemented the BBM into TOUGH-FLAC by (1) extending an existing FLAC{sup 3D} module for the Modified Cam-Clay (MCC) model in FLAC{sup 3D} and (2) adding computational routines for suction-dependent strain and net stress (i.e., total stress minus gas pressure) for unsaturated soils. We implemented a thermo-elasto-plastic version of the BBM, wherein the soil strength depends on both suction and temperature. The implementation of the BBM into TOUGH-FLAC was verified and tested against several published numerical model simulations and laboratory experiments involving the coupled thermal-hydrological-mechanical (THM) behavior of unsaturated soils. The simulation tests included modeling the mechanical behavior of bentonite-sand mixtures, which are being considered as back-fill and buffer materials for geological disposal of spent nuclear fuel. We also tested and demonstrated the use of the BBM and TOUGH-FLAC for a problem involving the coupled THM processes within a bentonite-backfilled nuclear waste emplacement tunnel. The simulation results indicated complex geomechanical behavior of the bentonite backfill, including a nonuniform distribution of buffer porosity and density that could not be captured in an alternative, simplified, linear-elastic swelling model. As a result of the work presented in this paper, TOUGH-FLAC with BBM is now fully operational and ready to be applied to problems associated with nuclear waste disposal in bentonite-backfilled tunnels, as well as other scientific and engineering problems related to the mechanical behavior of unsaturated soils.

  19. Estimation of mineral dust longwave radiative forcing: sensitivity study to particle properties and application to real cases over Barcelona

    Directory of Open Access Journals (Sweden)

    M. Sicard

    2014-03-01

    Full Text Available The aerosol radiative effect in the longwave (LW spectral range is sometimes not taken into account in atmospheric aerosol forcing studies at local scale because the LW aerosol effect is assumed to be negligible. At regional and global scale this effect is partially taken into account: aerosol absorption is taken into account but scattering is still neglected. However, aerosols with strong absorbing and scattering properties in the LW region, like mineral dust, can have a non-negligible radiative effect in the LW spectral range (both at surface and top of the atmosphere which can counteract their cooling effect occurring in the shortwave spectral range. The first objective of this research is to perform a sensitivity study of mineral dust LW radiative forcing (RF as a function of dust microphysical and optical properties using an accurate radiative transfer model which can compute vertically-resolved shortwave and longwave aerosol RF. Radiative forcing simulations in the LW range have shown an important sensitivity to the following parameters: aerosol load, radius of the coarse mode, refractive index, aerosol vertical distribution, surface temperature and surface albedo. The scattering effect has been estimated to contribute to the LW RF up to 18% at the surface and up to 38% at the top of the atmosphere. The second objective is the estimation of the shortwave and longwave dust RF for 11 dust outbreaks observed in Barcelona. At the surface, the LW RF varies between +2.8 and +10.2 W m−2, which represents between 11 and 26% (with opposite sign of the SW component, while at the top of the atmosphere the LW RF varies between +0.6 and +5.8 W m−2, which represents between 6 and 26% (with opposite sign of the SW component.

  20. Chagas disease among the Latin American adult population attending in a primary care center in Barcelona, Spain.

    Directory of Open Access Journals (Sweden)

    Carme Roca

    Full Text Available BACKGROUND/AIMS: The epidemiology of Chagas disease, until recently confined to areas of continental Latin America, has undergone considerable changes in recent decades due to migration to other parts of the world, including Spain. We studied the prevalence of Chagas disease in Latin American patients treated at a health center in Barcelona and evaluated its clinical phase. We make some recommendations for screening for the disease. METHODOLOGY/PRINCIPAL FINDINGS: We performed an observational, cross-sectional prevalence study by means of an immunochromatographic test screening of all continental Latin American patients over the age of 14 years visiting the health centre from October 2007 to October 2009. The diagnosis was confirmed by serological methods: conventional in-house ELISA (cELISA, a commercial kit (rELISA and ELISA using T cruzi lysate (Ortho-Clinical Diagnostics (oELISA. Of 766 patients studied, 22 were diagnosed with T. cruzi infection, showing a prevalence of 2.87% (95% CI, 1.6-4.12%. Of the infected patients, 45.45% men and 54.55% women, 21 were from Bolivia, showing a prevalence in the Bolivian subgroup (n=127 of 16.53% (95% CI, 9.6-23.39%. ALL THE INFECTED PATIENTS WERE IN A CHRONIC PHASE OF CHAGAS DISEASE: 81% with the indeterminate form, 9.5% with the cardiac form and 9.5% with the cardiodigestive form. All patients infected with T. cruzi had heard of Chagas disease in their country of origin, 82% knew someone affected, and 77% had a significant history of living in adobe houses in rural areas. CONCLUSIONS: We found a high prevalence of T. cruzi infection in immigrants from Bolivia. Detection of T. cruzi-infected persons by screening programs in non-endemic countries would control non-vectorial transmission and would benefit the persons affected, public health and national health systems.

  1. Survival rates according to barcelona clinic liver cancersub-staging system after transarterial embolization forintermediate hepatocellular carcinoma

    Institute of Scientific and Technical Information of China (English)

    Leandro Armani Scaffaro; Steffan Frosi Stella; Mario Reis Alvares-Da-Silva; Cleber Dario Pinto Kruel

    2015-01-01

    AIM To investigate the survival rates after transarterialembolization (TAE).METHODS: One hundred third six hepatocellularcarcinoma (HCC) patients [90 barcelona clinic livercancer (BCLC) B] were submitted to TAE betweenAugust 2008 and December 2013 in a single centerwere retrospectively studied. TAE was performed viasuperselective catheterization followed by embolizationwith polyvinyl alcohol or microspheres. The date of thefirst embolization until death or the last follow-up datewas used for the assessment of survival. The survivalrates were calculated using the Kaplan-Meier method,and the groups were compared using the log-rank test.RESULTS: The overall mean survival was 35.8 mo(95%CI: 25.1-52.0). The survival rates of the BCLC Apatients (33.7%) were 98.9%, 79.0% and 58.0% at12, 24 and 36 mo, respectively, and the mean survivalwas 38.1 mo (95%CI: 27.5-52.0). The survival rates ofthe BCLC B patients (66.2%) were 89.0%, 69.0% and49.5% at 12, 24 and 36 mo, respectively, and the meansurvival was 29.0 mo (95%CI: 17.2-34). The survivalrates according to the BCLC B sub-staging showedsignificant differences between the groups, with meansurvival rates in the B1, B2, B3 and B4 groups of 33.5mo (95%CI: 32.8-34.3), 28.6 mo (95%CI: 27.5-29.8),19.0 mo (95%CI: 17.2-20.9) and 13 mo, respectively (P= 0.013).CONCLUSION: The BCLC sub-staging systemcould add additional prognosis information for postembolizationsurvival rates in HCC patients.

  2. Los barrrios artísticos como base local de la cultura global. El caso del Raval de Barcelona

    Directory of Open Access Journals (Sweden)

    Rius Uldemollins, Joaquím

    2008-12-01

    Full Text Available Artistic neighborhoods, one of the urban phenomenons most characteristic of the beginning century, are beoming an important object of study in the social sciences. However the analysis is overly centered on their economic impact or the cultural policies that have contributed to their creation. In this article, we propose to center the study of artistic neighborhoods in the urban, social and artistic dynamics that explain their emergence and rationale for their development. In this sense, we show how the Raval is symbollicaly charged, having an important presence of artists and small cultural businesses, makes up the core of emerging,hybrid and multicultural art in Barcelona and in addition counts on the presence of two cultural institutions oriented towards cultural governance.

    Los barrios artísticos, uno de los fenómenos urbanos más característicos de este inicio de siglo, se están convirtiendo en un importante objeto de estudio para las ciencias sociales. No obstante, los análisis que se realizan siguen demasiado centrados en su impacto económico o en las políticas culturales que han contribuido a crearlos. En este artículo, proponemos centrar el estudio de los barrios artísticos en las dinámicas urbanas, sociales y del propio mundo artístico que explican su surgimiento y dan cuenta de su desarrollo. Utilizaremos el caso del barrio barcelonés del Raval para ejemplificar este análisis. Mostraremos en este sentido cómo el Raval está cargado simbólicamente, tiene una importante presencia de artistas y pequeñas empresas culturales, que constituye el núcleo barcelonés del arte emergente, multicultural e híbrido, y cuenta además con la presencia de dos instituciones culturales orientadas a la gobernanza cultural.

  3. One piece reactor removal

    International Nuclear Information System (INIS)

    Japan Research Reactor No.3 (JRR-3) was the first reactor consisting of 'Japanese-made' components alone except for fuel and heavy water. After reaching its initial critical state in September 1962, JRR-3 had been in operation for 21 years until March 1983. It was decided that the reactor be removed en-bloc in view of the work schedule, cost and management of the reactor following the removal. In the special method developed jointly by the Japanese Atomic Energy Research Institute and Shimizu Construction Co., Ltd., the reactor main unit was cut off from the building by continuous core boring, with its major components bound in the block with biological shield material (heavy concrete), and then conveyed and stored in a large waste store building constructed near the reactor building. Major work processes described in this report include the cutting off, lifting, horizontal conveyance and lowering of the reactor main unit. The removal of the JRR-3 reactor main unit was successfully carried out safely and quickly by the en-block removal method with radiation exposure dose of the workers being kept at a minimum. Thus the high performance of the en-bloc removal method was demonstrated and, in addition, valuable knowhow and other data were obtained from the work. (Nogami, K.)

  4. Reactor Materials Research

    Energy Technology Data Exchange (ETDEWEB)

    Van Walle, E

    2001-04-01

    The activities of the Reactor Materials Research Department of the Belgian Nuclear Research Centre SCK-CEN in 2000 are summarised. The programmes within the department are focussed on studies concerning (1) fusion, in particular mechanical testing; (2) Irradiation Assisted Stress Corrosion Cracking (IASCC); (3) nuclear fuel; and (4) Reactor Pressure Vessel Steel (RPVS)

  5. Light water reactor program

    Energy Technology Data Exchange (ETDEWEB)

    Franks, S.M.

    1994-12-31

    The US Department of Energy`s Light Water Reactor Program is outlined. The scope of the program consists of: design certification of evolutionary plants; design, development, and design certification of simplified passive plants; first-of-a-kind engineering to achieve commercial standardization; plant lifetime improvement; and advanced reactor severe accident program. These program activities of the Office of Nuclear Energy are discussed.

  6. Research reactor DHRUVA

    International Nuclear Information System (INIS)

    DHRUVA, a 100 MWt research reactor located at the Bhabha Atomic Research Centre, Bombay, attained first criticality during August, 1985. The reactor is fuelled with natural uranium and is cooled, moderated and reflected by heavy water. Maximum thermal neutron flux obtained in the reactor is 1.8 X 1014 n/cm2/sec. Some of the salient design features of the reactor are discussed in this paper. Some important features of the reactor coolant system, regulation and protection systems and experimental facilities are presented. A short account of the engineered safety features is provided. Some of the problems that were faced during commissioning and the initial phase of power operation are also dealt upon

  7. TRIGA research reactors

    International Nuclear Information System (INIS)

    TRIGA (Training, Research, Isotope production, General-Atomic) has become the most used research reactor in the world with 65 units operating in 24 countries. The original patent for TRIGA reactors was registered in 1958. The success of this reactor is due to its inherent level of safety that results from a prompt negative temperature coefficient. Most of the neutron moderation occurs in the nuclear fuel (UZrH) because of the presence of hydrogen atoms, so in case of an increase of fuel temperature, the neutron spectrum becomes harder and neutrons are less likely to fission uranium nuclei and as a consequence the power released decreases. This inherent level of safety has made this reactor fit for training tool in university laboratories. Some recent versions of TRIGA reactors have been designed for medicine and industrial isotope production, for neutron therapy of cancers and for providing a neutron source. (A.C.)

  8. Mirror reactor surface study

    International Nuclear Information System (INIS)

    A general survey is presented of surface-related phenomena associated with the following mirror reactor elements: plasma first wall, ion sources, neutral beams, director converters, vacuum systems, and plasma diagnostics. A discussion of surface phenomena in possible abnormal reactor operation is included. Several studies which appear to merit immediate attention and which are essential to the development of mirror reactors are abstracted from the list of recommended areas for surface work. The appendix contains a discussion of the fundamentals of particle/surface interactions. The interactions surveyed are backscattering, thermal desorption, sputtering, diffusion, particle ranges in solids, and surface spectroscopic methods. A bibliography lists references in a number of categories pertinent to mirror reactors. Several complete published and unpublished reports on surface aspects of current mirror plasma experiments and reactor developments are also included

  9. Iris reactor conceptual design

    Energy Technology Data Exchange (ETDEWEB)

    Carelli, M.D.; Conway, L.E.; Petrovic, B.; Paramonov, D.V. [Westinghouse Electric Comp., Pittsburgh, PA (United States); Galvin, M.; Todreas, N.E. [Massachusetts Inst. of Tech., Cambridge, MA (United States); Lombardi, C.V.; Maldari, F.; Ricotti, M.E. [Politecnico di Milano, Milan (Italy); Cinotti, L. [Ansaldo SpA, Genoa (Italy)

    2001-07-01

    IRIS (International Reactor Innovative and Secure) is a modular, integral, light water cooled, low-to-medium power (100-350 MWe) reactor which addresses the requirements defined by the US DOE for Generation IV reactors, i.e., proliferation resistance, enhanced safety, improved economics and fuel cycle sustainability. It relies on the proven technology of light water reactors and features innovative engineering, but it does not require new technology development. This paper discusses the current reference IRIS design, which features a 1000 MWt thermal core with proven 5%-enriched uranium oxide fuel and five-year long straight burn fuel cycle, integral reactor vessel housing helical tube steam generators and immersed spool pumps. Other major contributors to the high level of safety and economic attractiveness are the safety by design and optimized maintenance approaches, which allow elimination of some classes of accidents, lower capital cost, long operating cycle, and high capacity factors. (author)

  10. Status of French reactors

    Energy Technology Data Exchange (ETDEWEB)

    Ballagny, A. [Commissariat a l`Energie Atomique, Saclay (France)

    1997-08-01

    The status of French reactors is reviewed. The ORPHEE and RHF reactors can not be operated with a LEU fuel which would be limited to 4.8 g U/cm{sup 3}. The OSIRIS reactor has already been converted to LEU. It will use U{sub 3}Si{sub 2} as soon as its present stock of UO{sub 2} fuel is used up, at the end of 1994. The decision to close down the SILOE reactor in the near future is not propitious for the start of a conversion process. The REX 2000 reactor, which is expected to be commissioned in 2005, will use LEU (except if the fast neutrons core option is selected). Concerning the end of the HEU fuel cycle, the best option is reprocessing followed by conversion of the reprocessed uranium to LEU.

  11. Compact torsatron reactors

    International Nuclear Information System (INIS)

    Low-aspect-ratio torsatron configurations could lead to compact stellarator reactors with R0 = 8--11m, roughly one-half to one-third the size of more conventional stellarator reactor designs. Minimum-size torsatron reactors are found using various assumptions. Their size is relatively insensitive to the choice of the conductor parameters and depends mostly on geometrical constraints. The smallest size is obtained by eliminating the tritium breeding blanket under the helical winding on the inboard side and by reducing the radial depth of the superconducting coil. Engineering design issues and reactor performance are examined for three examples to illustrate the feasibility of this approach for compact reactors and for a medium-size (R0 ≅ 4 m,/bar a/ /approx lt/ 1 m) copper-coil ignition experiment. 26 refs., 11 figs., 7 tabs

  12. Nuclear reactor design

    CERN Document Server

    2014-01-01

    This book focuses on core design and methods for design and analysis. It is based on advances made in nuclear power utilization and computational methods over the past 40 years, covering core design of boiling water reactors and pressurized water reactors, as well as fast reactors and high-temperature gas-cooled reactors. The objectives of this book are to help graduate and advanced undergraduate students to understand core design and analysis, and to serve as a background reference for engineers actively working in light water reactors. Methodologies for core design and analysis, together with physical descriptions, are emphasized. The book also covers coupled thermal hydraulic core calculations, plant dynamics, and safety analysis, allowing readers to understand core design in relation to plant control and safety.

  13. Differences between users of six public parks in Barcelona depending on the level of perceived safety in the neighborhood Diferencias entre los usuarios de seis parques públicos en Barcelona según el nivel de seguridad percibida en el barrio

    OpenAIRE

    Felix Pérez Tejera

    2012-01-01

    Research on the relation between fear of crime and public space has been often limited to psychosocial processes (place attachment, social cohesion, collective efficacy) and the effect of environmental variables (brightness, graffitis, cleaness). Most of the behavioral aspects involved, however, have been neglected. In this work we carried out a systematic observational study of the types of users (gender, age, ethnicity, signs of poverty) of six public parks in Barcelona. We examined whether...

  14. A rede de serviços de atenção à saúde do idoso na cidade de Barcelona (Espanha e na cidade de São Paulo (Brasil The net of services aiming the aged's health in Barcelona (Spain and São Paulo (Brazilian city

    Directory of Open Access Journals (Sweden)

    Álvaro da Silva Santos

    2010-06-01

    Full Text Available Trata-se de estudo quantitativo com o objetivo de descrever e analisar o tipo de organiZação e estruturação da rede de serviços públicos de saúde voltados ao idoso nas cidades de São Paulo (Brasil e Barcelona (Espanha. O envelhecimento em Barcelona é mais antigo, e sua rede de serviços está em uma dinâmica muito mais biologicista. Já em São Paulo, observa-se uma melhor estruturação na atenção primária à saúde, mas ao mesmo tempo reduzida oferta de serviços voltados ao idoso. Os resultados apontam a possibilidade de troca de experiências sociossanitárias, apesar das distintas realidades.This is a quantitative study to describe and to analyse the type of organization and structure of the net of public health services aiming the aged in the cities of São Paulo (Brazil and Barcelona (Spain. The aging in Barcelona is an older phenomenon than it is in São Paulo, and the net of services in that Spanish city has a much more biology-related dynamics. On the other hand, São Paulo has a better structure as to the primary attention to health, but at the same time its availability of services for the aged is reduced. The results point to the possibility of exchange of sanitary experiences through partnership, in spite of the distinct realities.

  15. Reactor Engineering Division annual report

    International Nuclear Information System (INIS)

    Research activities in the Division of Reactor Engineering in fiscal 1977 are described. Works of the Division are development of multi-purpose Very High Temperature Gas Cooled Reactor, fusion reactor engineering, and development of Liquid Metal Fast Breeder Reactor for Power Reactor and Nuclear Fuel Development Corporation. Contents of the report are nuclear data and group constants, theoretical method and code development, integral experiment and analysis, shielding, heat transfer and fluid dynamics, reactor and nuclear instrumentation, dynamics analysis and control method development, fusion reactor technology, and Committee on Reactor Physics. (Author)

  16. Reactor Engineering Department annual report

    International Nuclear Information System (INIS)

    Research and development activities in the Department of Reactor Engineering in fiscal 1983 are described. The work of the Department is closely related to development of multipurpose Very High Temperature Gas Cooled Reactor and Fusion Reactor, and development of Liquid Metal Fast Breeder Reactor carried out by Power Reactor and Nuclear Fuel Development Corporation. Contents of the report are achievements in fields such as nuclear data and group constants, theoretical method and code development, integral experiment and analysis, fusion neutronics, shielding, reactor and nuclear instrumentation, reactor control and diagnosis, and safeguards technology, and activities of the Committee on Reactor Physics. (author)

  17. Reactor Engineering Division annual report

    International Nuclear Information System (INIS)

    Research activities conducted in Reactor Engineering Division in fiscal 1975 are summarized in this report. Works in the division are closely related to the development of multi-purpose High-temperature Gas Cooled Reactor, the development of Liquid Metal Fast Breeder Reactor by Power Reactor and Nuclear Fuel Development Corporation, and engineering research of thermonuclear fusion reactor. Many achievements are described concerning nuclear data and group constants, theoretical method and code development, integral experiment and analysis, shielding, heat transfer and fluid dynamics, reactor and nuclear instrumentation, dynamics analysis and control method development, fusion reactor technology and activities of the Committee on Reactor Physics. (auth.)

  18. Gestión de derechos de propiedad intelectual en el repositorio institucional y en las colecciones digitales de la Universitat de Barcelona

    OpenAIRE

    Aguasca Sole, Montserrat; Casals Parladé, Judit; Labastida, Ignasi

    2009-01-01

    [ES] En esta comunicación se quiere dar a conocer la experiencia del Centro de Recursos para el Aprendizaje y la investigación de UB en la gestión de derechos en las diferentes colecciones digitales de la Universidad. Desde hace años la Universidad de Barcelona dispone de un repositorio institucional y participa en diversos repositorios cooperativos a nivel de Cataluña y España. La Unidad de Proyectos del CRAI es la responsable de gestión del repositorio y de estas colecciones digitales. El p...

  19. La estancia de Maria Montessori en Barcelona : la influencia de su método en la psicopedagogía catalana

    OpenAIRE

    Sáiz Roca, Milagros; Sáiz Roca, Dolores

    2005-01-01

    Nuestro trabajo describe la entrada de las ideas de María Montessori en Cataluña, así como su estancia en Barcelona. Presenta, también, un análisis de la influencia de sus teorías y su método en la psicología pedagógica catalana. Por otro lado, se estudia, además, el trabajo realizado por Montessori en este período y se explica su dirección del Laboratorio Seminario de Pedagogía de la Mancomunitat de Cataluña

  20. La movilidad en la región metropolitana de Barcelona: entre los nuevos retos y las viejas prácticas

    OpenAIRE

    Cebollada, Angel; Miralles-Guasch, Carme, 1961-

    2012-01-01

    La extensión territorial de la Región Metropolitana de Barcelona (RMB) de los últimos decenios se ha producido a partir de los patrones de la especialización funcional y de baja densidad. Este modelo urbano se asocia al uso del vehículo privado. Este hecho se contradice con el reto de las políticas públicas de conseguir una pautas de movilidad sostenibles, priorizando aquellos modos de transporte menos costosos ambiental y socialmente. El presente artículo señala los impactos de las viejas pr...

  1. Suburbanizacion, distribución espacial de la renta y segregación residencial en la región metropolitana de Barcelona

    OpenAIRE

    Muñiz, Iván; Roig Sabaté, José Luis

    2001-01-01

    La región metropolitana de Barcelona ha experimentado durante los últimos veinte años un intenso proceso de suburbanización e integración metropolitana. La combinación de ambos procesos ha dejado una profunda huella en el territorio conformando una conurbación policéntrica a la vez que dispersa. Esta nueva realidad plantea algunas preguntas interesantes: (a) ¿cuáles son las características de los municipios que atraen población, (b) ¿cómo se ha redistribuido espacialmente la renta debido al p...

  2. Nuevas geografías de la producción y el consumo en la región metropolitana de Barcelona

    OpenAIRE

    Font Arellano, Antonio; Vecslir, Lorena

    2008-01-01

    Los nuevos espacios de la producción y el consumo en la Región Metropolitana de Barcelona muestran un cambio en sus “geografías localizativas” y la emergencia de una configuración reticular organizada según principios de complementariedad y de sinergia. Las modalidades de localización en relación al sistema urbano o a la infraestructura existente, los tipos de utilización, así como los patrones morfotipológicos con que se presentan, constituyen los contenidos principales de este artículo. El ...

  3. Propuesta de intervención en el paseo marítimo de Vilanova i la Geltrú (Barcelona)

    OpenAIRE

    Mitjans Carroggio, Jaime

    2014-01-01

    Vilanova i la Geltrú city, located between Barcelona (40 Km.) and Tarragona (45 Km.), is Garraf's region capital. Its total area is 33,5 Km2 and its population overcomes the 65000 inhabitants, according to the municipal poll review in 2012. It has a wide history and it obtained the "Carta Pobla", granted by King James I, in 1274. Vilanova i la Geltrú economy consisted basically of agriculture and maritime trade (wine trade specially). This product was important in the XVIII and XIX centuries....

  4. Análisis crítico de las perspectivas y recursos para la trata de personas con fines de explotación sexual en Barcelona

    OpenAIRE

    Peixoto Santos, Sandra

    2012-01-01

    En este artículo presento abordajes en relación a la intervención sobre el fenómeno de la trata de personas con fines de explotación sexual en Barcelona desde la perspectiva de los profesionales implicados en los diferentes recursos existentes. Primeramente, considero las diferencias entre trata y prostitución, noción de víctima y perspectiva de género, y la influencia de la globalización en el fenómeno. En seguida, presento el contraste de perspectivas de los profesionales entrevistados en r...

  5. Frederic Rahola Trèmols y el centenario de independencias hispanoamericanas: el diseño de la celebración en Barcelona

    OpenAIRE

    Dalla Corte Caballero, Gabriela

    2014-01-01

    El artículo aborda las obras periodísticas, literarias y de relatos de viaje de Frederic Rahola Trèmols, aparecidas en el periodo de organización de las celebraciones del centenario de las independencias hispanoamericanas. Los complejos y múltiples intereses en juego permitieron a Rahola expresar sus ideas y sus propuestas en las páginas de la Revista Comercial Iberoamericana Mercurio de Barcelona, de la cual fue director. The article discusses the journalistic, literary and travelogues...

  6. Project-Based Learning in the Masters degree in Nuclear Engineering at BarcelonaTECH. Experience gained in the area of Management of Nuclear Power Plants

    Energy Technology Data Exchange (ETDEWEB)

    Reventos, F.; Vives, E.; Brunet, A.; Sabate, R.; Calvino, F.; Batet, L.

    2014-07-01

    From its first edition, that took place in 2011-2012, the Masters degree in Nuclear Engineering from BarcelonaTECH has been using techniques of Project-Based Learning to fulfill the purpose of training nuclear engineers with a profile suitable for positions in the industry. The Master is sponsored by ENDESA and relies on the collaboration with institutions and companies. The Master is embedded in EMINE, the European Master in Innovation in Nuclear Energy, supported by KIC-InnoEnergy and the European Institute of Technology. (Author)

  7. Observatorio Barça 2010. La Campaña a la Presodencia del FC Barcelona en prensa deportiva y las redes sociales

    OpenAIRE

    Ginesta Portet, Xavier; Gómez, Mariela; Serrat Manén, Jordi

    2011-01-01

    El artículo tiene como objetivo analizar la cobertura que los principales periódicos deportivos catalanes (Sport, Mundo Deportivo, El 9 Esportiu y Gol) hicieron de la campaña a la presidencia del FC Barcelona (Barça) de junio de 2010 y que acabó ganando Sandro Rosell. La investigación compara esta cobertura con la información de campaña aparecida en las redes sociales Twitter y Facebook usadas por cada candidatura y analiza si el uso de estas nuevas herramientas 2.0 influyó en la ...

  8. Estructura espacial del empleo y economías de aglomeración: el caso de la Región Metropolitana de Barcelona

    OpenAIRE

    García López, Miquel-Àngel

    2007-01-01

    Tras un exhaustivo análisis y caracterización de la distribución espacial del empleo industrial en la Región Metropolitana de Barcelona (RMB), en este trabajo se analiza el papel que juegan las economías de aglomeración en el cambio de la estructura espacial del empleo que experimenta la ciudad en los últimos años. Utilizando como indicador de cambios en la estructura espacial del empleo la variación en la concentración municipal del empleo industrial entre 1991 y 2003, se explora el impacto ...

  9. Project-Based Learning in the Masters degree in Nuclear Engineering at BarcelonaTECH. Experience gained in the area of Management of Nuclear Power Plants

    International Nuclear Information System (INIS)

    From its first edition, that took place in 2011-2012, the Masters degree in Nuclear Engineering from BarcelonaTECH has been using techniques of Project-Based Learning to fulfill the purpose of training nuclear engineers with a profile suitable for positions in the industry. The Master is sponsored by ENDESA and relies on the collaboration with institutions and companies. The Master is embedded in EMINE, the European Master in Innovation in Nuclear Energy, supported by KIC-InnoEnergy and the European Institute of Technology. (Author)

  10. Agroecología escolar en comunidades urbanas mediterráneas. El caso de Sant Cugat del Vallès (Barcelona)

    OpenAIRE

    Llerena del Castillo, Germán; Espinet Blanch, Mariona

    2013-01-01

    Se presenta la agroecología escolar como práctica educativa, que tiene su referente social en la agroecología, a través del trabajo realizado durante seis años en el municipio de Sant Cugat del Vallès (Barcelona). Se trata de una experiencia escolar en red que involucra centros escolares, administración, universidad y el sector de educadores/as agroambientales del municipio. Se presenta la práctica educativa a partir del huerto escolar ecológico y sus raíces agroecológicas. Finalmente, se en...

  11. Salud bucal y su atenci??n en las personas mayores institucionalizadas de Barcelona y el impacto en su calidad de vida

    OpenAIRE

    Cornejo Ovalle, Marco, 1969-

    2014-01-01

    El prop??sito de esta tesis ha sido investigar el estado de salud bucal de las personasmayores institucionalizadas en Barcelona y los cuidados que ellos reciben parapromover y mantener su salud bucal. Por otro lado, evaluar la evoluci??n de lasdesigualdades socioecon??micas en el uso de los servicios dentales en Chile, donde segarantiz?? la atenci??n de salud bucal a algunos grupos poblacionales. Ello con lafinalidad de proponer el esquema de garant??as de algunas atenciones de salud bucalcom...

  12. Estudi d'ubicació d'un parc eòlic a la nova façana marítima del Port de Barcelona

    OpenAIRE

    Enfedaque Farràs, Enric

    2009-01-01

    El present projecte pretén avaluar les possibilitats eòliques de l’emplaçament conegut com a Dic Sud, localitzat dins de l’ampliació recent del Port de Barcelona pel seu vessant Sud, a tocar amb la nova desembocadura del riu Llobregat, per tal de definir un possible futur aprofitament energètic, de caire totalment renovable. La finalitat serà avaluar els condicionants per tal d’ubicar, si és possible, una instal·lació que generi la màxima quantitat d’energia amb l’objectiu d’aportar-la a l...

  13. Estudio descriptivo sobre la influencia de la sociedad de consumo en los valores y hábitos de los adolescentes de la provincia de Barcelona

    OpenAIRE

    Berríos Valenzuela, Llarela Alejandra

    2007-01-01

    Nuestra investigación la enmarcamos en el enfoque Ex-post-facto descriptivo por encuesta debido a que es el más pertinente para realizar nuestro estudio, porque nuestro propósito es: identificar los hábitos de consumo en la población adolescente de la provincia de Barcelona, así como establecer el grado de influencia que la sociedad actual ejerce en la configuración de sus valores. La causa fundamental reside en que cuando hemos realizado el estudio, o bien los hechos que configuran el fenóme...

  14. Project-based learning in the Master’s degree in Nuclear Engineering at BarcelonaTECH. Experience gained in the area of Management of Nuclear Power Plants

    OpenAIRE

    Reventós Puigjaner, Francesc Josep; Vives Laflor, Eugeni; Brunet, Antoni; Sabaté, Ramon; Calviño Tavares, Francisco; Batet Miracle, Lluís

    2014-01-01

    From its first edition, that took place in 2011-2012, the Master’s degree in Nuclear Engineering from BarcelonaTECH has been using techniques of Project-Based Learning to fulfil the purpose of training nuclear engineers with a profile suitable for positions in the industry. The Master is sponsored by ENDESA and relies on the collaboration with institutions and companies. The Master is embedded in EMINE, the European Master in Innovation in Nuclear Energy, supported by KIC-InnoEnergy and the E...

  15. Tanque de almacenamiento de GNL para la ampliación de la planta de regasificación de Barcelona

    OpenAIRE

    López Latorre, Andrea J.

    2013-01-01

    ENAGAS tiene la intención de ampliar el Terminal de Regasificación de GNL que tiene en el puerto de Barcelona. El presente Proyecto Básico define las instalaciones de uno de los Tanques de almacenamiento de GNL que se van a construir dentro del Alcance de dicha ampliación, con el suficiente detalle como para permitir a ENAGAS acometer las tareas previas a la ejecución del proyecto, a saber: 1. Planificar y presupuestar la fase de ejecución 2. Solicitar los Permisos y Autorizaciones necesarias...

  16. Mancera, A. y Pano, A. (2013). El discurso político en Twitter: Análisis de mensajes que “trinan”. Barcelona: Anthropos.

    OpenAIRE

    Patricio Moya

    2014-01-01

    El presente documento reseña la obra de las profesoras Ana Mancera (de la Universidad de Sevilla) y Ana Pano (de la Universidad de Bolonia) llamada "El discurso político en Twitter: Análisis de los mensajes que trinan". Moya, P. (2014). Mancera, A. y Pano, A. (2013). El discurso político en Twitter: Análisis de mensajes que “trinan”. Barcelona: Anthropos. 117-119. doi:http://dx.doi.org/10.4995/rlyla.2014.1705. 117 119

  17. Urbanitas y urbanismos. Recorridos etnográficos para entender la interrelación entre entornos construidos y usuarios en el espacio público de Barcelona

    OpenAIRE

    García Ferrer, Raúl

    2015-01-01

    Esta tesis doctoral se interroga sobre las interrelaciones existentes entre el espacio construido de la ciudad y las personas que lo habitan. Se busca desvelar las reciprocidades entre el entorno material urbano y las personas que lo utilizan. Para ello se elige el espacio público de Barcelona en sus componentes materiales y sociales como lugar de estudio privilegiado para producir la información etnográfica. Como método de trabajo se propone la observación participante a lo largo de tre...

  18. Urbanitas y urbanismos. Recorridos etnográficos para entender la interrelación entre entornos construidos y usuarios en el espacio público de Barcelona

    OpenAIRE

    García Ferrer, Raúl; Marre Cifola, Diana

    2015-01-01

    Esta tesis doctoral se interroga sobre las interrelaciones existentes entre el espacio construido de la ciudad y las personas que lo habitan. Se busca desvelar las reciprocidades entre el entorno material urbano y las personas que lo utilizan. Para ello se elige el espacio público de Barcelona en sus componentes materiales y sociales como lugar de estudio privilegiado para producir la información etnográfica. Como método de trabajo se propone la observación participante a lo largo de tres "it...

  19. Reactor performance calculations for water reactors

    International Nuclear Information System (INIS)

    The principles of nuclear, thermal and hydraulic performance calculations for water cooled reactors are discussed. The principles are illustrated by describing their implementation in the UKAEA PATRIARCH scheme of computer codes. This material was originally delivered as a course of lectures at the Technical University of Helsinki in Summer of 1969.

  20. Integrated Health Care Barcelona Esquerra (Ais-Be): A Global View of Organisational Development, Re-Engineering of Processes and Improvement of the Information Systems. The Role of the Tertiary University Hospital in the Transformation.

    Science.gov (United States)

    Font, David; Escarrabill, Joan; Gómez, Mónica; Ruiz, Rafael; Enfedaque, Belén; Altimiras, Xavier

    2016-01-01

    The Integrated Health Area "Barcelona Esquerra" (Área Integral de Salud de Barcelona Esquerra - AIS-BE), which covers a population of 524,000 residents in Barcelona city, is running a project to improve healthcare quality and efficiency based on co-ordination between the different suppliers in its area through the participation of their professionals. Endowed with an Organisational Model that seeks decision-taking that starts out from clinical knowledge and from Information Systems tools that facilitate this co-ordination (an interoperability platform and a website) it presents important results in its structured programmes that have been implemented such as the Reorganisation of Emergency Care, Screening for Colorectal Cancer, the Onset of type 2 Diabetes Mellitus, Teledermatology and the Development of Cross-sectional Healthcare Policies for Care in Chronicity. PMID:27616964

  1. Safety of research reactors

    International Nuclear Information System (INIS)

    The number of research reactors that have been constructed worldwide for civilian applications is about 651. Of the reactors constructed, 284 are currently in operation, 258 are shut down and 109 have been decommissioned. More than half of all operating research reactors worldwide are over thirty years old. During this long period of time national priorities have changed. Facility ageing, if not properly managed, has a natural degrading effect. Many research reactors face concerns with the obsolescence of equipment, lack of experimental programmes, lack of funding for operation and maintenance and loss of expertise through ageing and retirement of the staff. Other reactors of the same vintage maintain effective ageing management programmes, conduct active research programmes, develop and retain high calibre personnel and make important contributions to society. Many countries that operate research reactors neither operate nor plan to operate power reactors. In most of these countries there is a tendency not to create a formal regulatory body. A safety committee, not always independent of the operating organization, may be responsible for regulatory oversight. Even in countries with nuclear power plants, a regulatory regime differing from the one used for the power plants may exist. Concern is therefore focused on one tail of a continuous spectrum of operational performance. The IAEA has been sending missions to review the safety of research reactors in Member States since 1972. Some of the reviews have been conducted pursuant to the IAEA' functions and responsibilities regarding research reactors that are operated within the framework of Project and Supply Agreements between Member States and the IAEA. Other reviews have been conducted upon request. All these reviews are conducted following procedures for Integrated Safety Assessment of Research Reactors (INSARR) missions. The prime objective of these missions has been to conduct a comprehensive operational safety

  2. Reactor Engineering Department annual report

    International Nuclear Information System (INIS)

    This report summarizes the research and development activities in the Department of Reactor Engineering during the fiscal year of 1992 (April 1, 1992-March 31, 1993). The major Department's programs promoted in the year are the assessment of the high conversion light water reactor, the design activities of advanced reactor system and development of a high energy proton linear accelerator for the engineering applications including TRU incineration. Other major tasks of the Department are various basic researches on the nuclear data and group constants, the developments of theoretical methods and codes, the reactor physics experiments and their analyses, fusion neutronics, radiation shielding, reactor instrumentation, reactor control/diagnosis, thermohydraulics and technology developments related to the reactor physics facilities. The cooperative works to JAERI's major projects such as the high temperature gas cooled reactor or the fusion reactor and to PNC's fast reactor project were also progressed. The activities of the Research Committee on Reactor Physics are also summarized. (author)

  3. Reactor engineering department annual report

    International Nuclear Information System (INIS)

    This report summarizes the research and development activities in the Department of Reactor Engineering during the fiscal year of 1989 (April 1, 1989 - March 31, 1990). One of major Department's programs is the assessment of the high conversion light water reactor and the design activities of advanced reactor system. Development of a high energy proton linear accelerator for the nuclear engineering including is also TRU incineration promoted. Other major tasks of the Department are various basic researches on nuclear data and group constants, theoretical methods and code development, on reactor physics experiments and analyses, fusion neutronics, radiation shielding, reactor instrumentation, reactor control/diagnosis, thermohydraulics, technology assessment of nuclear energy and technology developments related to the reactor physics facilities. The cooperative works to JAERI's major projects such as the high temperature gas cooled reactor or the fusion reactor and to PNC's fast reactor project also progressed. The activities of the Research Committee on Reactor Physics are also summarized. (author)

  4. Slurry reactor design studies

    Energy Technology Data Exchange (ETDEWEB)

    Fox, J.M.; Degen, B.D.; Cady, G.; Deslate, F.D.; Summers, R.L. (Bechtel Group, Inc., San Francisco, CA (USA)); Akgerman, A. (Texas A and M Univ., College Station, TX (USA)); Smith, J.M. (California Univ., Davis, CA (USA))

    1990-06-01

    The objective of these studies was to perform a realistic evaluation of the relative costs of tublar-fixed-bed and slurry reactors for methanol, mixed alcohols and Fischer-Tropsch syntheses under conditions where they would realistically be expected to operate. The slurry Fischer-Tropsch reactor was, therefore, operated at low H{sub 2}/CO ratio on gas directly from a Shell gasifier. The fixed-bed reactor was operated on 2.0 H{sub 2}/CO ratio gas after adjustment by shift and CO{sub 2} removal. Every attempt was made to give each reactor the benefit of its optimum design condition and correlations were developed to extend the models beyond the range of the experimental pilot plant data. For the methanol design, comparisons were made for a recycle plant with high methanol yield, this being the standard design condition. It is recognized that this is not necessarily the optimum application for the slurry reactor, which is being proposed for a once-through operation, coproducing methanol and power. Consideration is also given to the applicability of the slurry reactor to mixed alcohols, based on conditions provided by Lurgi for an Octamix{trademark} plant using their standard tubular-fixed reactor technology. 7 figs., 26 tabs.

  5. Test reactor technology

    International Nuclear Information System (INIS)

    The Reactor Development Program created a need for engineering testing of fuels and materials. The Engineering Test Reactors were developed around the world in response to this demand. The design of the test reactors proved to be different from that of power reactors, carrying the fuel elements closer to the threshold of failure, requiring more responsive instrumentation, more rapid control element action, and inherent self-limiting behavior under accident conditions. The design of the experimental facilities to exploit these reactors evolved a new, specialized, branch of engineering, requiring a very high-lvel scientific and engineering team, established a meticulous concern with reliability, the provision for recovery from their own failures, and detailed attention to possible interactions with the test reactors. This paper presents this technology commencing with the Materials Testing Reactor (MTR) through the Fast Flux Test Facility, some of the unique experimental facilities developed to exploit them, but discusses only cursorily the experiments performed, since sample preparation and sample analyses were, and to some extent still are, either classified or proprietary. The Nuclear Engineering literature is filled with this information

  6. Fast Breeder Reactor studies

    International Nuclear Information System (INIS)

    This report is a compilation of Fast Breeder Reactor (FBR) resource documents prepared to provide the technical basis for the US contribution to the International Nuclear Fuel Cycle Evaluation. The eight separate parts deal with the alternative fast breeder reactor fuel cycles in terms of energy demand, resource base, technical potential and current status, safety, proliferation resistance, deployment, and nuclear safeguards. An Annex compares the cost of decommissioning light-water and fast breeder reactors. Separate abstracts are included for each of the parts

  7. Fast Breeder Reactor studies

    Energy Technology Data Exchange (ETDEWEB)

    Till, C.E.; Chang, Y.I.; Kittel, J.H.; Fauske, H.K.; Lineberry, M.J.; Stevenson, M.G.; Amundson, P.I.; Dance, K.D.

    1980-07-01

    This report is a compilation of Fast Breeder Reactor (FBR) resource documents prepared to provide the technical basis for the US contribution to the International Nuclear Fuel Cycle Evaluation. The eight separate parts deal with the alternative fast breeder reactor fuel cycles in terms of energy demand, resource base, technical potential and current status, safety, proliferation resistance, deployment, and nuclear safeguards. An Annex compares the cost of decommissioning light-water and fast breeder reactors. Separate abstracts are included for each of the parts.

  8. Licensed operating reactors

    International Nuclear Information System (INIS)

    The Operating Units Status Report --- Licensed Operating Reactors provides data on the operation of nuclear units as timely and accurately as possible. This information is collected by the Office of Information Resources Management from the Headquarters staff on NRC's Office of Enforcement (OE), from NRC's Regional Offices, and from utilities. The three sections of the report are: monthly highlights and statistics for commercial operating units, and errata from previously reported data; a compilation of detailed information on each unit, provided by NRC's Regional Offices, OE Headquarters and the utilities; and an appendix for miscellaneous information such as spent fuel storage capability, reactor-years of experience and non- power reactors in the US

  9. nuclear reactor design calculations

    International Nuclear Information System (INIS)

    In this work , the sensitivity of different reactor calculation methods, and the effect of different assumptions and/or approximation are evaluated . A new concept named error map is developed to determine the relative importance of different factors affecting the accuracy of calculations. To achieve this goal a generalized, multigroup, multi dimension code UAR-DEPLETION is developed to calculate the spatial distribution of neutron flux, effective multiplication factor and the spatial composition of a reactor core for a period of time and for specified reactor operating conditions. The code also investigates the fuel management strategies and policies for the entire fuel cycle to meet the constraints of material and operating limitations

  10. Course on reactor physics

    International Nuclear Information System (INIS)

    In Germany only few students graduate in nuclear technology, therefore the NPP operating companies are forced to develop their own education and training concepts. AREVA NP has started together with the Technical University of Dresden a one-week course ''reactor physics'' that includes the know-how of the nuclear power plant construction company. The Technical University of Dresden has the training reactor AKR-2 that is retrofitted by modern digital instrumentation and control technology that allows the practical training of reactor control.

  11. PWR type reactor

    International Nuclear Information System (INIS)

    From a PWR with a primary circuit, consisting of a reactor pressure vessel, a steam generator and a reactor coolant pump, hot coolant is removed by means of an auxiliary system containing h.p. pumps for feeding water into the primary circuit and being connected with a pipe, originating at the upper part, which has got at least one isolating value. This is done by opening an outlet in a part of the auxiliary system that has got a lower pressure than the reactor vessel. Preferably a water jet pump is used for mixing with the water of the auxiliary system. (orig.)

  12. Microfluidic electrochemical reactors

    Science.gov (United States)

    Nuzzo, Ralph G.; Mitrovski, Svetlana M.

    2011-03-22

    A microfluidic electrochemical reactor includes an electrode and one or more microfluidic channels on the electrode, where the microfluidic channels are covered with a membrane containing a gas permeable polymer. The distance between the electrode and the membrane is less than 500 micrometers. The microfluidic electrochemical reactor can provide for increased reaction rates in electrochemical reactions using a gaseous reactant, as compared to conventional electrochemical cells. Microfluidic electrochemical reactors can be incorporated into devices for applications such as fuel cells, electrochemical analysis, microfluidic actuation, pH gradient formation.

  13. Llengües i globalització en el món de la recerca: els coneixements i els usos lingüístics al Parc Científic de Barcelona

    OpenAIRE

    Francesc Xavier Vila i Moreno; Vanesa Bretxa i Riera; Llorenç Comajoan i Colomé

    2012-01-01

    Aquest article estudia la presència de diverses llengües al Parc Científic de Barcelona de la Universitat de Barcelona (PCB) centrant-se en les competències dels seus actors i en els seus usos, mitjantçant diverses tècniques: l’estudi del paisatge lingüístic, una enquesta sociolingüística i diverses entrevistes en profunditat. Els resultats mostren un entorn de treball essencialment trilingüe —català, castellà i anglès— en distribució funcional atenuada. Els informants declaren tenir una ...

  14. Modelado estructural de un edificio convencional. Análisis de fragilidad del edificio k2m del Campus Nord de la Universidad Politécnica de Cataluña (Barcelona)

    OpenAIRE

    Lara Salazar, Ricardo

    2014-01-01

    Una parte importante del conjunto de edificios de nueva construcción de Barcelona pertenecen a la tipología de edificios de hormigón armado con estructura de soportes y forjados reticulares. Los cerramientos son de mampostería no reforzada y no confinada. En este estudio se presenta la evaluación sísmica de uno de estos edificios. Se trata del edificio K2M (Knowledge to Mark) situado en el Campus Nord de la Universidad Politécnica de Cataluña, en Barcelona. El edificio K2M s...

  15. Impacto de la Ley 28/2005 de medidas sanitarias frente al tabaquismo en la prevalencia de la exposición al humo ambiental del tabaco en Barcelona Impact of the 28/2005 Spanish smoking law on second-hand smoke exposure in Barcelona

    Directory of Open Access Journals (Sweden)

    Sandra Manzanares-Laya

    2011-12-01

    Full Text Available Objetivo: Evaluar el impacto de la Ley 28/2005 de medidas sanitarias frente al tabaquismo en la prevalencia de la exposición al humo ambiental del tabaco (HAT en Barcelona. Métodos: Estudio de evaluación antes-después mediante comparación de dos encuestas transversales. Las fuentes de datos fueron las Encuestas de Salud de Barcelona de 2000 y 2006. Se analizó la prevalencia de exposición al HAT en población adulta no fumadora según el ámbito de exposición (hogar, trabajo y tiempo libre y las variables sociodemográficas. Resultados: La exposición al HAT en no fumadores en el hogar y el trabajo disminuyó significativamente (p Objective: To assess the impact of the 28/2005 Spanish smoking law on exposure to second-hand smoke (SHS in Barcelona. Methods: We performed a pre-post evaluation study. Two cross-sectional surveys were compared. Data were obtained from the Barcelona Health Surveys of 2000 and 2006. The prevalence of SHS exposure among non-smoking adults was analyzed by setting (home, workplace and leisure time and sociodemographic variables. Results: SHS exposure in non-smokers significantly decreased between 2000 and 2006 (p <0.01. Odds ratios adjusted by sex, age and social class were 0.7 (95% CI: 0.6-0.8 for home and 0.2 (95% CI: 0.2-0.3 for workplace exposure in 2006 compared with 2000. In both settings, the decrease in exposure was greater in the higher social classes. After the implementation of the law, almost 50% of the population remained exposed to SHS during leisure time, younger people being the most exposed (83.5%. Conclusion: After the implementation of the law, the prevalence of SHS exposure in non-smokers in Barcelona decreased significantly in workplaces and in the home. Nevertheless, nearly half of the population remained exposed to SHS during leisure time.

  16. Estudio del comportamiento alimentario en escolares de 11 a 13 años de Barcelona Study on feeding behavior in school children aged 11-13 years from Barcelona

    Directory of Open Access Journals (Sweden)

    M. Castells Cuixart

    2006-08-01

    Full Text Available Objetivo: Conocer el entorno familiar, hábitos cotidianos y características sociales que pueden influir en la alimentación de los escolares de 11 a 13 años. Metodología: Estudio descriptivo transversal realizado en 65 escuelas de la provincia de Barcelona, durante el segundo trimestre del 2000, obteniendo una muestra de 2.354 escolares encuestados por 73 farmacéuticos. El cuestionario está compuesto por 39 preguntas referentes al entorno familiar, hábitos alimentarios y de estilo de vida como el visionado de la televisión y la actividad física. Resultados: El estudio muestra que la unidad familiar formada por dos hijos y los padres es la más habitual. Solo el 12% de los adolescentes encuestados viven con los abuelos. Se observa poca presencia de toda la familia durante las principales comidas en los días laborables mientras que se produce un incremento en los días festivos de un 26% en desayuno, un 44% en la comida y de un 11% en la cena. El 24% de los escolares desayunan sin compañía y el 46% comen lo que quieren. En cuanto a la merienda el 25% lo hacen solos y el 55% comen lo que quieren. Un 60% nunca o casi nunca participan en la decisión de compra de los alimentos. El 70% realizan alguna otra actividad mientras comen. Concretamente, el 40, 39 y 59% de los adolescentes manifiestan que ven la televisión durante el desayuno, la merienda y la cena, respectivamente. La frecuencia de consumo de horas de televisión, chucherías y refrescos es significativamente menor en los adolescentes de los centros privados que en los de los públicos. Conclusiones: El estudio revela que mayoritariamente los padres deciden los alimentos que compran, pero los adolescentes tienen un papel importante en la decisión de los alimentos que consumen principalmente en el desayuno y en la merienda así como en las actividades que realizan mientras comen. Por ello, el farmacéutico, como profesional de la salud, debe intervenir en la educaci

  17. Source apportionment of indoor, outdoor and personal PM2.5 exposure of pregnant women in Barcelona, Spain

    Science.gov (United States)

    Minguillón, M. C.; Schembari, A.; Triguero-Mas, M.; de Nazelle, A.; Dadvand, P.; Figueras, F.; Salvado, J. A.; Grimalt, J. O.; Nieuwenhuijsen, M.; Querol, X.

    2012-11-01

    Exposure to air pollution has been shown to adversely affect foetal development in the case of pregnant women. The present study aims to investigate the PM composition and sources influencing personal exposure of pregnant women in Barcelona. To this end, indoor, outdoor and personal exposure measurements were carried out for a selection of 54 pregnant women between November 2008 and November 2009. PM2.5 samples were collected during two consecutive days and then analysed for black smoke (BS), major and trace elements, and polycyclic aromatic hydrocarbons (PAHs) concentrations. Personal information such as commuting patterns and cosmetics use was also collected. PM2.5 concentrations were higher for personal samples than for indoor and outdoor environments. Indoor, outdoor and personal BS and sulphate concentrations were strongly correlated, although some specific indoor and outdoor sulphate sources may exist. Average trace elements concentrations were similar indoor, outdoor and for personal exposure, but the correlations were moderate for most of them. Most of the PAHs concentrations showed strong correlations indoor-outdoor. A source apportionment analysis of the PM composition data by means of a Positive Matrix Factorization (PMF) resulted in the identification of six sources for the outdoor and indoor environments: secondary sulphate, fueloil + sea salt (characterized by V, Ni, Na and Mg), mineral, cigarette (characterized by K, Ce, Cd, benzo(k)fluoranthene and benzo(ghi)perylene), road traffic (characterized by BS and low weight PAHs), and industrial (characterized by Pb, Sn, Cu, Mn and Fe). For personal exposure two specific sources were found: cosmetics (characterized by abundance of Ca, Li, Ti and Sr and the absence of Al) and train/subway (characterized by Fe, Mn, Cu and Ba). The contribution of the sources varied widely among women, especially for cigarette (from zero to up to 4 μg m-3), train/subway (up to more than 6 μg m-3) and cosmetics (up to more

  18. La difusión de la teoría evolucionista de Lamarck en la revista La Abeja (1862-1870 de Barcelona

    Directory of Open Access Journals (Sweden)

    Camós Cabeceran, Agustí

    1997-12-01

    Full Text Available Between 1862 and 1864 Lamarck's works were diffused in Spain through a magazine called La Abeja which was edited by Antoni Bergnes de las Casas, and published in Barcelona. This may reveal a more important influence of Lamarck's theory on the introduction of evolutionary theories in Spain. La Abeja includes the translation of the Histoire naturelle des végétaux where Lamarck incorporated an early explanation of his theory of evolution; and a series of anonymous articles about the reproduction of living beings, where a more complete explanation about Lamarck's evolutionary theory is contained.

    La obra de Lamarck fue difundida, entre los años 1862 y 1865, por la revista La Abeja dirigida por Antoni Bergnes de las Casas y publicada en Barcelona. En dicha revista aparece explicada la teoría evolucionista de Lamarck tanto en la traducción de su obra. Histoire naturelle des végétaux, como en una serie de artículos anónimos sobre la reproducción de los seres vivos. Estos datos pueden revelar que, en la introducción del evolucionismo en España, la teoría evolucionista de Lamarck tuvo mayor influencia de la que generalmente se ha supuesto.

  19. Descripción osteológica del rorcual común (Balaenoptera physalus, Linnaeus, 1758 del Museo de Ciencias Naturales de Barcelona

    Directory of Open Access Journals (Sweden)

    Carrillo, M.

    2014-09-01

    Full Text Available Description of the skeleton of the fin whale (Balaenoptera physalus, Linnaeus, 1758 at the Natural History Museum of Barcelona We describe the osteology of the fin whale (Balaenoptera physalus, L., registration code MZB 83-308 at the Natural History Museum of Barcelona. The specimen was stranded and died on a beach in Llançà (Girona, Spain in 1862. The skeleton weighed 1,161.59 kg and measured 14. 6 m, although the live animal would have been longer because the invertebral tissue was not included in the length originally stated. The newly reconstructed skeleton includes the invertebral discs and is 17.5 m long. The skull weighs 484 kg and the condilobasal length is 431 cm ( 24. 84% of the total length, corresponding to the mean length of specimens in the Mediterranean. The vertebral column has 58 vertebra structured following the formula: C7 T14 L14 Cd23. It is 10.29 m long and weighs 470.95 kg. All the cervical vertebra are free and show dorsoventral compression, differing from the thoracic, lumbar and first caudal vertebra that are relatively uniform, and rounded. From Cd14 se onwards, the vertebra vary in shape and the relationship between width and height is greater than 1, indicating lateral compression. The lack of suture lines in the epiphysis of the ulna and radius indicates the specimen is an adult that has reached ossification maturation.

  20. Reactor BR2. Introduction

    International Nuclear Information System (INIS)

    The BR2 is a materials testing reactor and is still one of SCK-CEN's important nuclear facilities. After an extensive refurbishment to compensate for the ageing of the installation, the reactor was restarted in April 1997. During the last three years, the availability of the installation was maintained at an average level of 97.6 percent. In the year 2000, the reactor was operated for a total of 104 days at a mean power of 56 MW. In 2000, most irradiation experiments were performed in the CALLISTO PWR loop. The report describes irradiations achieved or under preparation in 2000, including the development of advanced facilities and concept studies for new programmes. An overview of the scientific irradiation programmes as well as of the R and D programme of the BR2 reactor in 2000 is given

  1. NEUTRONIC REACTOR FUEL COMPOSITION

    Science.gov (United States)

    Thurber, W.C.

    1961-01-10

    Uranium-aluminum alloys in which boron is homogeneously dispersed by adding it as a nickel boride are described. These compositions have particular utility as fuels for neutronic reactors, boron being present as a burnable poison.

  2. Pulsed fusion reactors

    International Nuclear Information System (INIS)

    This summer school specialized in examining specific fusion center systems. Papers on scientific feasibility are first presented: confinement of high-beta plasma, liners, plasma focus, compression and heating and the use of high power electron beams for thermonuclear reactors. As for technological feasibility, lectures were on the theta-pinch toroidal reactors, toroidal diffuse pinch, electrical engineering problems in pulsed magnetically confined reactors, neutral gas layer for heat removal, the conceptual design of a series of laser fusion power plants with ''Saturn'', implosion experiments and the problem of the targets, the high brightness lasers for plasma generation, and topping and bottoming cycles. Some problems common to pulsed reactors were examined: energy storage and transfer, thermomechanical and erosion effects in the first wall and blanket, the problems of tritium production, radiation damage and neutron activation in blankets, and the magnetic and inertial confinement

  3. Reactor BR2. Introduction

    Energy Technology Data Exchange (ETDEWEB)

    Gubel, P

    2002-04-01

    The BR2 materials testing reactor is one of SCK-CEN's most important nuclear facilities. After an extensive refurbishment to compensate for the ageing of the installation, the reactor was restarted in April 1997. In 2001, the reactor was operated for a total of 123 days at a mean power of 59 MW in order to satisfy the irradiation conditions of the internal and external programmes using mainly the CALLISTO PWR loop. The mean consumption of fresh fuel elements was 5.26 per 1000 MWd. Main achievements in 2001 included the development of a three-dimensional full-scale model of the BR2 reactor for simulation and prediction of irradiation conditions for various experiments; the construction of the FUTURE-MT device designed for the irradiation of fuel plates under representative conditions of geometry, neutron spectrum, heat flux and thermal-hydraulic conditions and the development of in-pile instrumentation and a data acquisition system.

  4. Reactor BR2. Introduction

    Energy Technology Data Exchange (ETDEWEB)

    Gubel, P

    2001-04-01

    The BR2 is a materials testing reactor and is still one of SCK-CEN's important nuclear facilities. After an extensive refurbishment to compensate for the ageing of the installation, the reactor was restarted in April 1997. During the last three years, the availability of the installation was maintained at an average level of 97.6 percent. In the year 2000, the reactor was operated for a total of 104 days at a mean power of 56 MW. In 2000, most irradiation experiments were performed in the CALLISTO PWR loop. The report describes irradiations achieved or under preparation in 2000, including the development of advanced facilities and concept studies for new programmes. An overview of the scientific irradiation programmes as well as of the R and D programme of the BR2 reactor in 2000 is given.

  5. Reactor Neutrino Spectra

    CERN Document Server

    Hayes, A C

    2016-01-01

    We present a review of the antineutrino spectra emitted from reactors. Knowledge of these and their associated uncertainties are crucial for neutrino oscillation studies. The spectra used to-date have been determined by either conversion of measured electron spectra to antineutrino spectra or by summing over all of the thousands of transitions that makeup the spectra using modern databases as input. The uncertainties in the subdominant corrections to beta-decay plague both methods, and we provide estimates of these uncertainties. Improving on current knowledge of the antineutrino spectra from reactors will require new experiments. Such experiments would also address the so-called reactor neutrino anomaly and the possible origin of the shoulder observed in the antineutrino spectra measured in recent high-statistics reactor neutrino experiments.

  6. Experience with Kamini reactor

    International Nuclear Information System (INIS)

    Kamini is a 233U fuelled, 30 kW(th) research reactor. It is one of the best neutron source facility with a core average flux of 1012 n/cm2/s in IGCAR used for neutron radiography of active and nonradioactive objects, activation analysis and radiation physics research. The core consists of nine plate type fuel elements with a total fuel inventory of 590 g of 233U. Two safety control plates made of cadmium are used for start up and shutdown of the reactor. Three beam tubes, two-thimble irradiation site outside reflector and one irradiation site nearer to the core constitute the testing facilities of Kamini. Kamini attained first criticality on 29th October 96 and nominal power of 30 kW in September 1997. This paper covers the design features of the reactor, irradiation facilities and their utilities and operating experience of the reactor. (author)

  7. Reactor pressure boundary materials

    International Nuclear Information System (INIS)

    With a long-term operation of nuclear power plants, the component materials are degraded under severe reactor conditions such as neutron irradiation, high temperature, high pressure and corrosive environment. It is necessary to establish the reliable and practical technologies for improving and developing the component materials and for evaluating the mechanical properties. Especially, it is very important to investigate the technologies for reactor pressure boundary materials such as reactor vessel and pipings in accordance with their critical roles. Therefore, this study was focused on developing and advancing the microstructural/micro-mechanical evaluation technologies, and on evaluating the neutron irradiation characteristics and radiation effects analysis technology of the reactor pressure boundary materials, and also on establishing a basis of nuclear material property database

  8. Fusion Reactor Materials

    Energy Technology Data Exchange (ETDEWEB)

    Decreton, M

    2002-04-01

    The objective of SCK-CEN's programme on fusion reactor materials is to contribute to the knowledge on the radiation-induced behaviour of fusion reactor materials and components as well as to help the international community in building the scientific and technical basis needed for the construction of the future reactor. Ongoing projects include: the study of the mechanical and chemical (corrosion) behaviour of structural materials under neutron irradiation and water coolant environment; the investigation of the characteristics of irradiated first wall material such as beryllium; investigations on the management of materials resulting from the dismantling of fusion reactors including waste disposal. Progress and achievements in these areas in 2001 are discussed.

  9. New reactor type proposed

    CERN Multimedia

    2003-01-01

    "Russian scientists at the Research Institute of Nuclear Power Engineering in Moscow are hoping to develop a new reactor that will use lead and bismuth as fuel instead of uranium and plutonium" (1/2 page).

  10. Special lecture on nuclear reactor

    International Nuclear Information System (INIS)

    This book gives a special lecture on nuclear reactor, which is divided into two parts. The first part has explanation on nuclear design of nuclear reactor and analysis of core with theories of integral transports, diffusion Nodal, transports Nodal and Monte Carlo skill parallel computer and nuclear calculation and speciality of transmutation reactor. The second part deals with speciality of nuclear reactor and control with nonlinear stabilization of nuclear reactor, nonlinear control of nuclear reactor, neural network and control of nuclear reactor, control theory of observer and analysis method of Adomian.

  11. Jet-Stirred Reactors

    OpenAIRE

    Herbinet, Olivier; Guillaume, Dayma

    2013-01-01

    The jet-stirred reactor is a type of ideal continuously stirred-tank reactor which is well suited for gas phase kinetic studies. It is mainly used to study the oxidation and the pyrolysis of hydrocarbon and oxygenated fuels. These studies consist in recording the evolution of the conversion of the reactants and of the mole fractions of reaction products as a function of different parameters such as reaction temperature, residence time, pressure and composition of the inlet gas. Gas chromatogr...

  12. Generation IV reactors: economics

    International Nuclear Information System (INIS)

    The operating nuclear reactors were built over a short period: no more than 10 years and today their average age rounds 18 years. EDF (French electricity company) plans to renew its reactor park over a far longer period : 30 years from 2020 to 2050. According to EDF this objective implies 3 constraints: 1) a service life of 50 to 60 years for a significant part of the present operating reactors, 2) to be ready to built a generation 3+ unit in 2020 which infers the third constraint: 3) to launch the construction of an EPR (European pressurized reactor) prototype as soon as possible in order to have it operating in 2010. In this scheme, generation 4 reactor will benefit the feedback experience of generation 3 and will take over in 2030. Economic analysis is an important tool that has been used by the generation 4 international forum to select the likely future reactor systems. This analysis is based on 4 independent criteria: the basic construction cost, the construction time, the operation and maintenance costs and the fuel cycle cost. This analysis leads to the evaluation of the global cost of electricity generation and of the total investment required for each of the reactor system. The former defines the economic competitiveness in a de-regulated energy market while the latter is linked to the financial risk taken by the investor. It appears, within the limits of the assumptions and models used, that generation 4 reactors will be characterized by a better competitiveness and an equivalent financial risk when compared with the previous generation. (A.C.)

  13. OECD Halden reactor project

    International Nuclear Information System (INIS)

    This report summarizes the activities of the OECD Halden Reactor Project for the year 1976. The main items reported on are: a) the process supervision and control which have focused on core monitoring and control, and operator-process communication; b) the fuel performance and safety behavior which have provided data and analytical descriptions of the thermal, mechanical and chemical behavior of fuel under various operating conditions; c) the reactor operations and d) the administration and finance

  14. Nuclear reactor fuel elements

    International Nuclear Information System (INIS)

    A nuclear reactor fuel element comprising a column of vibration compacted fuel which is retained in consolidated condition by a thimble shaped plug. The plug is wedged into gripping engagement with the wall of the sheath by a wedge. The wedge material has a lower coefficient of expansion than the sheath material so that at reactor operating temperature the retainer can relax sufficient to accommodate thermal expansion of the column of fuel. (author)

  15. Department of Reactor Technology

    DEFF Research Database (Denmark)

    Risø National Laboratory, Roskilde

    The general development of the Department of Reactor Technology at Risø during 1981 is presented, and the activities within the major subject fields are described in some detail. Lists of staff, publications, and computer programs are included.......The general development of the Department of Reactor Technology at Risø during 1981 is presented, and the activities within the major subject fields are described in some detail. Lists of staff, publications, and computer programs are included....

  16. Moon base reactor system

    Science.gov (United States)

    Chavez, H.; Flores, J.; Nguyen, M.; Carsen, K.

    1989-01-01

    The objective of our reactor design is to supply a lunar-based research facility with 20 MW(e). The fundamental layout of this lunar-based system includes the reactor, power conversion devices, and a radiator. The additional aim of this reactor is a longevity of 12 to 15 years. The reactor is a liquid metal fast breeder that has a breeding ratio very close to 1.0. The geometry of the core is cylindrical. The metallic fuel rods are of beryllium oxide enriched with varying degrees of uranium, with a beryllium core reflector. The liquid metal coolant chosen was natural lithium. After the liquid metal coolant leaves the reactor, it goes directly into the power conversion devices. The power conversion devices are Stirling engines. The heated coolant acts as a hot reservoir to the device. It then enters the radiator to be cooled and reenters the Stirling engine acting as a cold reservoir. The engines' operating fluid is helium, a highly conductive gas. These Stirling engines are hermetically sealed. Although natural lithium produces a lower breeding ratio, it does have a larger temperature range than sodium. It is also corrosive to steel. This is why the container material must be carefully chosen. One option is to use an expensive alloy of cerbium and zirconium. The radiator must be made of a highly conductive material whose melting point temperature is not exceeded in the reactor and whose structural strength can withstand meteor showers.

  17. BWR type nuclear reactor

    International Nuclear Information System (INIS)

    Purpose: To simplify the structure of an emergency core cooling system while suppressing the flow out of coolants upon rapture accidents in a coolant recycling device of BWR type reactors. Constitution: Recirculation pumps are located at a position higher than the reactor core in a pressure vessel, and the lower plenum is bisected vertically by a partition plate. Further, a gas-liquid separator is surrounded with a wall and the water level at the outer side of the wall is made higher than the water level in the inside of the wall. In this structure, coolants are introduced from the upper chamber in the lower plenum into the reactor core, and the steams generated in the reactor core are separated in the gas-liquid separator, whereby the separated liquid is introduced as coolants by way of the inner chamber into the lower chamber of the lower plenum and further sent by way of the outer chamber into the reactor core. Consequently, idle rotation of the recycling pumps due to the flow-in of saturated water is prevented and loss of coolants in the reactor core can also be prevented upon raptures in the pipeway and the driving section of the pump connected to the pressure vessel and in the bottom of the pressure vessel. (Horiuchi, T.)

  18. OECD Halden reactor project

    International Nuclear Information System (INIS)

    This is the nineteenth annual Report on the OECD Halden Reactor Project, describing activities at the Project during 1978, the last year of the 1976-1978 Halden Agreement. Work continued in two main fields: test fuel irradiation and fuel research, and computer-based process supervision and control. Project research on water reactor fuel focusses on various aspects of fuel behavior under normal, and off-normal transient conditions. In 1978, participating organisations continued to submit test fuel for irradiation in the Halden boiling heavy-water reactor, in instrumented test assemblies designed and manufactured by the Project. Work included analysis of the impact of fuel design and reactor operating conditions on fuel cladding behavior. Fuel performance modelling included characterization of thermal and mechanical behavior at high burn-up, of fuel failure modes, and improvement of data qualification procedures to reduce and quantify error bands on in-reactor measurements. Instrument development yielded new or improved designs for measuring rod temperature, internal pressure, axial neutron flux shape determination, and for detecting cladding defects. Work on computer-based methods of reactor supervision and control included continued development of a system for predictive core surveillance, and of special mathematical methods for core power distribution control

  19. Barcelona Biennaalid / Katrin Koov

    Index Scriptorium Estoniae

    Koov, Katrin, 1973-

    2006-01-01

    Euroopa maastikuarhitektuuri biennaalist teemal "Landscape: a product - a production". 2003. a. Rosa Barba eripreemia pälvis laviinitõke Islandil (Reynir Vilhjalmsson), 2006. a. võidutööd: Pedra Tosca park Gironas (RCR Arhitektid), tööstusmaastikule loodud park-märgala (David Verport). Euroopa avaliku linnaruumi preemia konkursist võtsid esmakordselt osa eestlased nelja tööga (Rakvere keskväljak, Tubina mälestusmärk Tartus, trepp Rakvere Vallimäele, KUMU kompleks). Võitsid Horvaatia töö Morske Orgulje (Zadar), arhitekt Nikola Basic ja Hollandi töö A8ernA (Zaanstad), autor NL Architects

  20. Reactor physics and economic aspects of the CANDU reactor system

    International Nuclear Information System (INIS)

    A history of the development of the CANDU system is given along with a fairly detailed description of the 600 MW(e) CANDU reactor. Reactor physics calculation methods are described, as well as comparisons between calculated reactor physics parameters and those measured in research and power reactors. An examination of the economics of CANDU in the Ontario Hydro system and a comparison between fossil fuelled and light water reactors is presented. Some physics, economics and resources aspects are given for both low enriched uranium and thorium-fuelled CANDU reactors. Finally the RβD program in Advanced Fuel Cycles is briefly described

  1. Reactor Safety Planning for Prometheus Project, for Naval Reactors Information

    Energy Technology Data Exchange (ETDEWEB)

    P. Delmolino

    2005-05-06

    The purpose of this letter is to submit to Naval Reactors the initial plan for the Prometheus project Reactor Safety work. The Prometheus project is currently developing plans for cold physics experiments and reactor prototype tests. These tests and facilities may require safety analysis and siting support. In addition to the ground facilities, the flight reactor units will require unique analyses to evaluate the risk to the public from normal operations and credible accident conditions. This letter outlines major safety documents that will be submitted with estimated deliverable dates. Included in this planning is the reactor servicing documentation and shipping analysis that will be submitted to Naval Reactors.

  2. Fast breeder reactor research

    International Nuclear Information System (INIS)

    Full text: The meeting was attended by 15 participants from seven countries and two international organizations. The Eighth Annual Meeting of the International Working Group on Fast Reactors (IWGFR) was attended by representatives from France, Fed. Rep. Germany, Italy, Japan, United Kingdom, Union of Soviet Socialist Republics and the United States of America - countries that have made significant progress in developing the technology and physics of sodium cooled fast reactors and have extensive national programmes in this field - as well as by representatives of the Commission of the European Communities and the IAEA. The design of fast-reactor power plants is a more difficult task than developing facilities with thermal reactors. Different reactor kinetics and dynamics, a hard neutron spectrum, larger integral doses of fuel and structural material irradiation, higher core temperatures, the use of an essentially novel coolant, and, as a result of all these factors, the additional reliability and safety requirements that are imposed on the planning and operation of sodium cooled fast reactors - all these factors pose problems that can be solved comprehensively only by countries with a high level of scientific and technical development. The exchange of experience between these countries and their combined efforts in solving the fundamental problems that arise in planning, constructing and operating fast reactors are promoting technical progress and reducing the relative expenditure required for various studies on developing and introducing commercial fast reactors. For this reason, the meeting concentrated on reviewing and discussing national fast reactor programmes. The situation with regard to planning, constructing and operating fast experimental and demonstration reactors in the countries concerned, the experience accumulated in operating them, the difficulties arising during operation and ways of over-coming them, the search for optimal designs for the power

  3. La mirada de Eduald Serra. El artista a través de las colecciones de cerámica japonesa del museo etnológico de Barcelona

    Directory of Open Access Journals (Sweden)

    Gómez Pradas, Muriel

    2013-09-01

    Full Text Available The main objective of this paper is to analyze how the aesthetic preferences, sensitivity and particular “gaze” of the sculptor Eudald Serra (Barcelona 1911-2002 define and characterize the Japanese collection acquired by him for the Ethnological Museum of Barcelona, and influenced his own work as well. Precisely the knowledge and study of this collection, specifically the Japanese pottery, allowed us to understand both the man and the artist. His personal Travel Diary along with other unpublished materials have been essential in carrying out this work.El principal objetivo de este artículo es mostrar como las preferencias estéticas, la sensibilidad, y, muy especialmente, la particular “mirada” del escultor Eudald Serra (Barcelona 1911-2002 definen y caracterizan de una manera muy concreta la colección japonesa que este artista adquirió para el Museo Etnológico de Barcelona e influyó también en su propia obra. Ha sido precisamente el conocimiento y estudio de dicha colección, concretamente el grupo de obras de cerámica japonesa, la que nos ha permitido conocer tanto al hombre como al artista, habiendo sido absolutamente imprescindible para ellos el trabajo con material inédito como sus Diarios personales de viaje.

  4. Crítica a la utopía, crítica a la realidad: introducción a «Barcelona crítica» de A. Pizza

    OpenAIRE

    Martínez Medina, Andrés

    2007-01-01

    Presentación de A. MARTÍNEZ ("Crítica a la utopía, crítica a la realidad...") al profesor Antonio PIZZA ("Barcelona Crítica -escenarios actuales-") dentro del Foro Crítica I (2007): "Construir con palabras".

  5. BR2 Reactor: Introduction

    International Nuclear Information System (INIS)

    The irradiations in the BR2 reactor are in collaboration with or at the request of third parties such as the European Commission, the IAEA, research centres and utilities, reactor vendors or fuel manufacturers. The reactor also contributes significantly to the production of radioisotopes for medical and industrial applications, to neutron silicon doping for the semiconductor industry and to scientific irradiations for universities. Along the ongoing programmes on fuel and materials development, several new irradiation devices are in use or in design. Amongst others a loop providing enhanced cooling for novel materials testing reactor fuel, a device for high temperature gas cooled fuel as well as a rig for the irradiation of metallurgical samples in a Pb-Bi environment. A full scale 3-D heterogeneous model of BR2 is available. The model describes the real hyperbolic arrangement of the reactor and includes the detailed 3-D space dependent distribution of the isotopic fuel depletion in the fuel elements. The model is validated on the reactivity measurements of several tens of BR2 operation cycles. The accurate calculations of the axial and radial distributions of the poisoning of the beryllium matrix by 3He, 6Li and 3T are verified on the measured reactivity losses used to predict the reactivity behavior for the coming decades. The model calculates the main functionals in reactor physics like: conventional thermal and equivalent fission neutron fluxes, number of displacements per atom, fission rate, thermal power characteristics as heat flux and linear power density, neutron/gamma heating, determination of the fission energy deposited in fuel plates/rods, neutron multiplication factor and fuel burn-up. For each reactor irradiation project, a detailed geometry model of the experimental device and of its neighborhood is developed. Neutron fluxes are predicted within approximately 10 percent in comparison with the dosimetry measurements. Fission rate, heat flux and

  6. Scaleable, High Efficiency Microchannel Sabatier Reactor Project

    Data.gov (United States)

    National Aeronautics and Space Administration — A Microchannel Sabatier Reactor System (MSRS) consisting of cross connected arrays of isothermal or graded temperature reactors is proposed. The reactor array...

  7. LMFBR type reactor

    Energy Technology Data Exchange (ETDEWEB)

    Shimizu, Takeshi; Iida, Masaaki; Moriki, Yasuyuki

    1994-10-18

    A reactor core is divided into a plurality of coolants flowrate regions, and electromagnetic pumps exclusively used for each of the flowrate regions are disposed to distribute coolants flowrates in the reactor core. Further, the flowrate of each of the electromagnetic pumps is automatically controlled depending on signals from a temperature detector disposed at the exit of the reactor core, so that the flowrate of the region can be controlled optimally depending on the burning of reactor core fuels. Then, the electromagnetic pumps disposed for every divided region are controlled respectively, so that the coolants flowrate distribution suitable to each of the regions can be attained. Margin for fuel design is decreased, fuels are used effectively, as well as an operation efficiency can be improved. Moreover, since the electromagnetic pump has less flow resistance compared with a mechanical type pump, and flow resistance of the reactor core flowrate control mechanism is eliminated, greater circulating flowrate can be ensured after occurrence of accident in a natural convection using a buoyancy of coolants utilizable for after-heat removal as a driving force. (N.H.).

  8. Reactor coolant cleanup facility

    International Nuclear Information System (INIS)

    A depressurization device is disposed in pipelines upstream of recycling pumps of a reactor coolant cleanup facility to reduce a pressure between the pressurization device and the recycling pump at the downstream, thereby enabling high pressure coolant injection from other systems by way of the recycling pumps. Upon emergency, the recycling pumps of the coolant cleanup facility can be used in common to an emergency reactor core cooling facility and a reactor shutdown facility. Since existent pumps of the emergency reactor core cooling facility and the reactor shutdown facility which are usually in a stand-by state can be removed, operation confirmation test and maintenance for equipments in both of facilities can be saved, so that maintenance and reliability of the plant are improved and burdens on operators can also be mitigated. Moreover, low pressure design can be adopted for a non-regenerative heat exchanger and recycling coolant pumps, which enables to improve the reliability and economical property due to reduction of possibility of leakage. (N.H.)

  9. EBT reactor analysis

    International Nuclear Information System (INIS)

    This report summarizes the results of a recent ELMO Bumpy Torus (EBT) reactor study that includes ring and core plasma properties with consistent treatment of coupled ring-core stability criteria and power balance requirements. The principal finding is that constraints imposed by these coupling and other physics and technology considerations permit a broad operating window for reactor design optimization. Within this operating window, physics and engineering systems analysis and cost sensitivity studies indicate that reactors with approx. 6 to 10%, P approx. 1200 to 1700 MW(e), wall loading approx. 1.0 to 2.5 MW/m2, and recirculating power fraction (including ring-sustaining power and all other reactors auxiliaries) approx. 10 to 15% are possible. A number of concept improvements are also proposed that are found to offer the potential for further improvement of the reactor size and parameters. These include, but are not limited to, the use of: (1) supplementary coils or noncircular mirror coils to improve magnetic geometry and reduce size, (2) energetic ion rings to improve ring power requirements, (3) positive potential to enhance confinement and reduce size, and (4) profile control to improve stability and overall fusion power density

  10. Generalities about nuclear reactors

    International Nuclear Information System (INIS)

    From Zoe, the first nuclear reactor, till the current EPR, the French nuclear industry has always advanced by profiting from the feedback from dozens of years of experience and operations, in particular by drawing lessons from the most significant events in its history, such as the Fukushima accident. The new generations of reactors must improve safety and economic performance so that the industry maintain its legitimacy and its share in the production of electricity. This article draws the history of nuclear power in France, gives a brief description of the pressurized water reactor design, lists the technical features of the different versions of PWR that operate in France and compares them with other types of reactors. The feedback experience concerning safety, learnt from the major nuclear accidents Three Miles Island (1979), Chernobyl (1986) and Fukushima (2011) is also detailed. Today there are 26 third generation reactors being built in the world: 4 EPR (1 in Finland, 1 in France and 2 in China); 2 VVER-1200 in Russia, 8 AP-1000 (4 in China and 4 in the Usa), 8 APR-1400 (4 in Korea and 4 in UAE), and 4 ABWR (2 in Japan and 2 in Taiwan)

  11. Reactor Structural Materials: Reactor Pressure Vessel Steels

    Energy Technology Data Exchange (ETDEWEB)

    Chaouadi, R

    2000-07-01

    The objectives of SCK-CEN's R and D programme on Rector Pressure Vessel (RPV) Steels are:(1) to complete the fracture toughness data bank of various reactor pressure vessel steels by using precracked Charpy specimens that were tested statically as well as dynamically; (2) to implement the enhanced surveillance approach in a user-friendly software; (3) to improve the existing reconstitution technology by reducing the input energy (short cycle welding) and modifying the stud geometry. Progress and achievements in 1999 are reported.

  12. Radiofrequency ablation versus resection for Barcelona clinic liver cancer very early/early stage hepatocellular carcinoma: a systematic review

    Directory of Open Access Journals (Sweden)

    He ZX

    2016-02-01

    Full Text Available Zhen-Xin He,1 Pu Xiang,2 Jian-Ping Gong,1 Nan-Sheng Cheng,3 Wei Zhang4 1Department of Hepatobiliary Surgery, the Second Affiliated Hospital, Chongqing Medical University, Chongqing, 2State Key Laboratory of Biotherapy and Cancer Center, 3Department of Bile Duct Surgery, West China Hospital, Sichuan University, Chengdu, 4Department of Hepatobiliary Surgery, Yue Bei People’s Hospital, Shaoguan, Guangdong, People’s Republic of China Aim: To compare the long-term survival outcomes of radiofrequency ablation and liver resection for single very early/early stage hepatocellular carcinoma (HCC. Methods: The Cochrane Library (Issue 3, 2015, Embase (1974 to March 15, 2015, PubMed (1950 to March 15, 2015, Web of Science (1900 to March 15, 2015, and Chinese Biomedical Literature Database (1978 to March 15, 2015 were searched to identify relevant trials. Only trials that compared radiofrequency ablation and liver resection for single very early stage (≤2 cm or early stage (≤3 cm HCC according to the Barcelona clinic liver cancer (BCLC staging system were considered for inclusion in this review. The primary outcomes that we analyzed were the 3-year and 5-year overall survival (OS rates, and the secondary outcomes that we analyzed were the 3-year and 5-year disease-free survival (DFS rates. Review Manager 5.3 was used to perform a cumulative meta-analysis. Possible publication bias was examined using a funnel plot. A random-effects model was applied to summarize the various outcomes. Results: Six studies involving 947 patients were identified that compared radiofrequency ablation (n=528 to liver resection (n=419 for single BCLC very early HCC. In these six studies, the rates of 3-year OS, 5-year OS, 3-year DFS, and 5-year DFS were significantly lower in the radiofrequency ablation group than in the liver resection group (risk ratio [RR] =0.90, 95% confidence interval [CI]: 0.83–0.98, P=0.01; RR =0.84, 95% CI: 0.75–0.95, P=0.004; RR =0.77, 95% CI

  13. Source apportionment of submicron organic aerosol at an urban background and a road site in Barcelona (Spain during SAPUSS

    Directory of Open Access Journals (Sweden)

    M. Alier

    2013-10-01

    Full Text Available This study investigates the contribution of potential sources to the submicron (PM1 organic aerosol (OA simultaneously detected at an urban background (UB and a road site (RS in Barcelona during the 30 days of the intensive field campaign of SAPUSS (Solving Aerosol Problems by Using Synergistic Strategies, September–October 2010. A total of 103 filters at 12 h sampling time resolution were collected at both sites. Thirty-six neutral and polar organic compounds of known emission sources and photo-chemical transformation processes were analyzed by gas chromatography–mass spectrometry (GC-MS. The concentrations of the trace chemical compounds analyzed are herein presented and discussed. Additionally, OA source apportionment was performed by multivariate curve resolution–alternating least squares (MCR-ALS and six OA components were identified at both sites: two were of primary anthropogenic OA origin and three of secondary OA origin, while a sixth one was not clearly defined. Primary organics from emissions of local anthropogenic activities (urban primary organic aerosol, or POA Urban, mainly traffic emissions but also cigarette smoke, contributed 43% (1.5 μg OC m−3 and 18% (0.4 μg OC m−3 to OA at RS and UB, respectively. A secondary primary source – biomass burning (BBOA – was found in all the samples (average values 7% RS; 12% UB; 0.3 μg OC m−3, but this component was substantially contributing to OA only when the sampling sites were under influence of regional air mass circulation (REG.. Three secondary organic aerosol (SOA components (describing overall 60% of the variance were observed in the urban ambient PM1. Products of isoprene oxidation (SOA ISO – i.e. 2-methylglyceric acid, C5 alkene triols and 2-methyltetrols – showed the highest abundance at both sites when the city was under influence of inland air masses. The overall concentrations of SOA ISO were similar at both sites (0.4 and 0.3 μg m−3, or 16% and 7%, at

  14. Evolución de las desigualdades según la clase social en el control del embarazo en Barcelona (1994-97 frente a 2000-03 Trends in social inequalities in pregnancy care in Barcelona (Spain, 1994-97 versus 2000-03

    Directory of Open Access Journals (Sweden)

    Angelina Roig

    2007-10-01

    Full Text Available Objetivo: Describir y comparar las desigualdades según la clase social en el control del embarazo en Barcelona durante 2 períodos. Métodos: Se comparan 2 cuatrienios: 1994-1997 y 2000-2003. La población de estudio son las gestantes de Barcelona y la muestra los controles del Registro de Defectos Congénitos de Barcelona (n = 905 en 1994-1997; n = 927 en 2000-2003. Las fuentes de información son las historias hospitalarias y una encuesta realizada a las madres. Las variables dependientes son: planificación del embarazo, ingesta de ácido fólico antes del embarazo, consumo de tabaco, número de visitas al obstetra, trimestre de primera visita, número de ecografías, ecografía del quinto mes, prueba invasiva y abandono del tabaco. Las variables independientes son la edad y la clase social. Se ajustaron modelos de regresión logística para cada variable dependiente según la clase social y se compararon los resultados entre cuatrienios. Resultados: Tanto las gestantes de clases de ocupación manual como las de no manual presentan mejorías en el segundo cuatrienio en 7 de los 10 indicadores (no son exactamente los mismos en ambas clases. Sin embargo, cuando comparamos las variaciones interclase entre los 2 cuatrienios se registran diferencias en 8 de los 10 indicadores, 7 a favor de las clases más favorecidas y uno a favor de las menos favorecidas. Conclusiones: Excepto para una de las situaciones analizadas (hacer más de 3 ecografías, las clases menos favorecidas presentan peores resultados que las más favorecidas al comparar la tendencia de los indicadores entre los 2 períodos. La distancia entre clases en el ámbito del control de la gestación se acentúa con el tiempo.Objective: To describe and compare social inequalities in pregnancy care among pregnant women living in Barcelona (Spain in 2 periods. Methods: Two 4-year periods were compared: 1994-1997 and 2000-2003. The study population consisted of pregnant women living in

  15. Inequalities in mortality of men by oral and pharyngeal cancer in Barcelona, Spain and São Paulo, Brazil, 1995–2003

    Directory of Open Access Journals (Sweden)

    Boing Antonio

    2008-06-01

    Full Text Available Abstract Background Large inequalities of mortality by most cancers in general, by mouth and pharynx cancer in particular, have been associated to behaviour and geopolitical factors. The assessment of socioeconomic covariates of cancer mortality may be relevant to a full comprehension of distal determinants of the disease, and to appraise opportune interventions. The objective of this study was to compare socioeconomic inequalities in male mortality by oral and pharyngeal cancer in two major cities of Europe and South America. Methods The official system of information on mortality provided data on deaths in each city; general censuses informed population data. Age-adjusted death rates by oral and pharyngeal cancer for men were independently assessed for neighbourhoods of Barcelona, Spain, and São Paulo, Brazil, from 1995 to 2003. Uniform methodological criteria instructed the comparative assessment of magnitude, trends and spatial distribution of mortality. General linear models assessed ecologic correlations between death rates and socioeconomic indices (unemployment, schooling levels and the human development index at the inner-city area level. Results obtained for each city were subsequently compared. Results Mortality of men by oral and pharyngeal cancer ranked higher in Barcelona (9.45 yearly deaths per 100,000 male inhabitants than in Spain and Europe as a whole; rates were on decrease. São Paulo presented a poorer profile, with higher magnitude (11.86 and stationary trend. The appraisal of ecologic correlations indicated an unequal and inequitably distributed burden of disease in both cities, with poorer areas tending to present higher mortality. Barcelona had a larger gradient of mortality than São Paulo, indicating a higher inequality of cancer deaths across its neighbourhoods. Conclusion The quantitative monitoring of inequalities in health may contribute to the formulation of redistributive policies aimed at the concurrent

  16. Mimic of OSU research reactor

    International Nuclear Information System (INIS)

    The Ohio State University research reactor (OSURR) is undergoing improvements in its research and educational capabilities. A computer-based digital data acquisition system, including a reactor system mimic, will be installed as part of these improvements. The system will monitor the reactor system parameters available to the reactor operator either in digital parameters available to the reactor operator either in digital or analog form. The system includes two computers. All the signals are sent to computer 1, which processes the data and sends the data through a serial port to computer 2 with a video graphics array VGA monitor, which is utilized to display the mimic system of the reactor

  17. Methanation assembly using multiple reactors

    Science.gov (United States)

    Jahnke, Fred C.; Parab, Sanjay C.

    2007-07-24

    A methanation assembly for use with a water supply and a gas supply containing gas to be methanated in which a reactor assembly has a plurality of methanation reactors each for methanating gas input to the assembly and a gas delivery and cooling assembly adapted to deliver gas from the gas supply to each of said methanation reactors and to combine water from the water supply with the output of each methanation reactor being conveyed to a next methanation reactor and carry the mixture to such next methanation reactor.

  18. MINT research reactor safety program

    Energy Technology Data Exchange (ETDEWEB)

    Mohamad Idris bin Taib [Division of Special Project, Malaysian Institute for Nuclear Technology Research (MINT), Bangi (Malaysia)

    2000-11-01

    Malaysian Institute for Nuclear Technology Research (MINT) Research Reactor Safety Program has been done along with Reactor Power Upgrading Project, Reactor Safety Upgrading Project and Development of Expert System for On-Line Nuclear Process Control Project. From 1993 up to date, Neutronic and Thermal-hydraulics analysis, Probabilistic Safety Assessment as well as installation of New 2 MW Secondary Cooling System were done. Installations of New Reactor Building Ventilation System, Reactor Monitoring System, Updating of Safety Analysis Report and Upgrading Primary Cooling System are in progress. For future activities, Reactor Modeling will be included to add present activities. (author)

  19. Form, function, and regulation of ARGONAUTE proteins

    OpenAIRE

    Mallory, Allison; Vaucheret, Herve

    2010-01-01

    Both transcriptional (TGS) and posttranscriptional gene silencing (PTGS) are conserved eukaryotic gene regulatory mechanisms, integral for taming exogenous (viruses and bacteria) or endogenous (repetitive elements and transposons) invasive nucleic acids to minimize their impact on genome integrity and function. TGS and PTGS also are essential for controlling the expression of protein coding genes throughout development or in response to environmental stimuli. In plants and animals, at least o...

  20. La enseñanza de la perspectiva como parte de la fortificación en el siglo XVIII: el caso de la Real Academia de Matemáticas de Barcelona Teachings on perspective as part of fortifications in the 18th century: the case of the Royal Academy of Mathematics of Barcelona

    Directory of Open Access Journals (Sweden)

    Jorge Galindo Díaz

    2008-12-01

    Full Text Available Este artículo pretende demostrar la manera en que durante buena parte del siglo XVIII, la enseñanza de la perspectiva que se llevó a cabo al interior de las academias de ingenieros militares, tuvo que despojarse del carácter simbólico que tuvo durante años para arquitectos, pintores y escultores. A través del estudio de caso de la Real Academia de Matemáticas de Barcelona se pone en evidencia la manera en que esta disciplina pasó a engrosar, junto con la estática, la mecánica y otras ciencias matemáticas, un universo de saberes alcanzable para los ingenieros de la modernidad.Este artigo pretende demonstrar o modo em que, durante boa parte do século XVIII, o ensino da perspectiva que se levou a cabo nas Academias de engenheiros militares despojando-se do caráter simbólico que teve durante anos para arquitetos, pintores e escultores. Através do estudo do caso da Real Academia de Matemática de Barcelona coloca-se em evidência o modo em que esta disciplina passou a compor, junto com a estática, a mecânica e outras ciências matemáticas, um universo de saberes alcançáveis para os engenheiros da modernidade.This article seeks to show how during much of 18th century teachings on perspective taking place at the academies of military engineers had to rid itself of the symbolic character it bore during many years for/ architects, painters, and sculptors. Through the case study of the Royal Academy of Mathematics of Barcelona, it is evident that this discipline became - along with statistics, mechanics, and other mathematical sciences - a reachable universe of knowledge for engineers in modern times.