3,586 research outputs found
Catshark explica la importància de taurons i rajades al Mediterrani
No full textParlem amb Claudio Flavio i Annabel Colmenero, de l'associació Catshark, dedicada a la protecció de taurons i rajades, dues de les espècies marines més amenaçades del món i la Mar Mediterrània no n'és cap excepció.
La sobrepesca, la pesca accidental i la contaminació són les principals amenaces d'aquestes espècies, que veuen reforçades les seves aspiracions de supervivència i benestar amb l'arribada de Catshark, l'activitat de la qual és clau en la defensa dels ecosistemes marins tal i com exposen els seus representants a Arran De MarPeer reviewe
Differential stability of 2'F-ANA*RNA and ANA*RNA hybrid duplexes: roles of structure, pseudohydrogen bonding, hydration, ion uptake and flexibility
No full text14 pags., 7 figs., 3 tabs.Hybrids of RNA with arabinonucleic acids 2′F-ANA and ANA have very similar structures but strikingly different thermal stabilities. We now present a thorough study combining NMR and other biophysical methods together with state-of-the-art theoretical calculations on a fully modified 10-mer hybrid duplex. Comparison between the solution structure of 2′F-ANA•RNA and ANA•RNA hybrids indicates that the increased binding affinity of 2′F-ANA is related to several subtle differences, most importantly a favorable pseudohydrogen bond (2′F-purine H8) which contrasts with unfavorable 2′-OH-nucleobase steric interactions in the case of ANA. While both 2′F-ANA and ANA strands maintained conformations in the southern/eastern sugar pucker range, the 2′F-ANA strand's structure was more compatible with the A-like structure of a hybrid duplex. No dramatic differences are found in terms of relative hydration for the two hybrids, but the ANA•RNA duplex showed lower uptake of counterions than its 2′F-ANA•RNA counterpart. Finally, while the two hybrid duplexes are of similar rigidities, 2′F-ANA single strands may be more suitably preorganized for duplex formation. Thus the dramatically increased stability of 2′F-ANA•RNA and ANA•RNA duplexes is caused by differencesin at least four areas, of which structure and pseudohydrogen bonding are the most important. © The Author(s) 2010. Published by Oxford University Press.Spanish Ministerio de Ciencia e Innovacion (grants
CTQ2007-68014-C02-02 to CG and BIO2009-10964 to
MO); Fundacion Marcelino Botin (grant to MO);
Canadian Institutes for Health Research (grant to
M.J.D.); Natural Sciences and Engineering Research
Council of Canada (postgraduate scholarship to
J.K.W.). Funding for open access charge: Canadian
Institutes for Health Research
Arxipèlag blau: passat, present i futur
No full textCineforum y mesa redonda celebrada el 29 de septiembre de 2023 en el Institut de Ciències del Mar (ICM-CSIC)En el marc del projecte europeu Ocean Night, impulsat per centres d'investigació marina del CSIC (IMEDEA, ICM, CEAB, ICMAN, IIM), celebrarem la nit de l'oceà en diferents punts de la costa espanyola amb diverses activitats.
A Barcelona, l'ICM us convida a la projecció del documental "Arxipèlag blau", que anirà acompanyat d'una taula rodona per debatre els reptes que queden per resoldre i les possibles solucions.
La taula rodona comptarà amb la participació de Purificació Canals, Cristina Caparrós, Anabel Colmenero i Rafael Sardá. Moderada per María ViciosoPeer reviewe
David B. Brownlee interviewed by Ana Tostões
No full textIn February 2018, Ana Tostões interviewed David Brownlee, pioneer researcher on Louis I. Kahn and an historian of modern architecture and professor of the history of art at the University of Pennsylvania, in order to debate Kahn’s realm of ideas and their contemporary significance. David Brownlee was guest curator of the exhibition Louis I. Kahn: In the Realm of Architecture (Museum of Modern Art, New York, 1992), and is co-author of the homonymous book (with David G. De Long, New York, 1991, translated into four other languages) that stands as the first worldwide comprehensive publication on Louis I. Kahn
William Whitaker interviewed by Ana Tostões
No full textIn February 2018, Ana Tostões interviewed William Whitaker, curator and collections manager of the Architectural Archives of the University of Pennsylvania School of Design, where the Louis I. Kahn Collection is hosted, in order to debate the importance of documentation for the preservation of Kahn’s legacy. William Whitaker was curatorial consultant of the exhibition Louis Kahn: The Power of Architecture (Vitra Design Museum, 2012) and is the co-author of The Houses of Louis I. Kahn (with George Marcus, 2013), the first comprehensive publication on the architect’s house designs. The management of the Louis I. Kahn Collection has been having a fundamental role, not only in the documentation and interpretation of Kahn’s life and work, but also in the success of the contemporary rehabilitation projects undertaken in his buildings
Stages for the More Sustainable Farm
No full textCurrently, agricultural farm units are faced with a double and most times contradictory challenge, in order to be successful: on the one hand the invested capital has to be profitable and the economic performance has to be maximised. On the other hand, given the socio-environmental situation, it is necessary to preserve and to protect the environment and natural resources. Given the potential conflict of the two aims, since the satisfaction of one implies the underperformance of the other (and vice versa), the question then is: which is the solution to choose? We intend, in this work, to formulate a farm plan with the purpose of reconciling the criteria of environmental sustainability with that of economic competitiveness. For this achievement we proceed to the comparative study of sustainability of different groups of farms identified in the study area (first evaluation cycle) through MESMIS (“Marco para la Evaluación de Sistemas de Manejo de Recursos Naturales Mediante Indicadores de Sustentabilidad” - Framework for Evaluation of Natural-Resource Systems Handling through Sustainability Indicators) methodology, that allowed to select the more sustainable group of farms. Based on the found potentialities and weakness on these production systems, we stepped to the planning of a production unit of bovine meat, which obeys simultaneously to economic and environmental objectives, using Multicriteria Decision. We finished the work with the sustainability evaluation between groups of farms identified previously and the planned farms (second evaluation cycle), based, again, in the MESMIS methodology, to confirm (or not) the greatest sustainability of the last ones. Analyses of the results allow us to confirm the greatest relative sustainability of the planned farm, for the diverse traced scenarios.Decision taking, planning, sustainability, Environmental Economics and Policy, Farm Management,
Determining the need for an expanded fitness component in the Fire Science Program at Milwaukee Area Technical College
No full textIncludes bibliographical references
ACWWS Talk Di Tings: with Ana Menendez
No full textThis is an interview with Cuban-American writer, Ana Menéndez, author of In Cuba I Was A German Shepherd, Loving Che, The Last War and Adios Happy Homeland! This video is in 2 parts
Catalunya protegeix les tintoreres que poblen la costa
No full textL'Associació Catalana per una Pesca Responsable ha marcat una tintorera i una escurçana violeta al cap de Creus per fer-ne seguiment. L'objectiu del marcatge és obtenir dades dels seus moviments per protegir l'espècie, que està amenaçada i pateix una davallada de poblacióPeer reviewe
Tagging of Biomedical Articles on CiteULike: A Comparison of User, Author and Professional Indexing
No full textThis paper examines the context of online indexing from the viewpoint of three different groups: users, authors, and professional indexers. User tags, author keywords and descriptors were collected from academic journal articles, which were both indexed in Pubmed and tagged on CiteULike, and analysed. Descriptive statistics, informetric measures, and thesaural term comparison shows that there are important differences in the use of keywords between the three groups in addition to similarities which can be used to enhance support for search and browse. While tags and author keywords were found that matched descriptors exactly, other terms which did not match but provided important expansion to the indexing lexicon were found. These additional terms could be used to enhance support for searching and browsing in article databases as well as to provide invaluable data for entry vocabulary and emergent terminology for regular updates to indexing systems. Additionally, the study suggests that tags support organisation by association to task, projects and subject while making important connections to traditional systems which classify into subject categories
- …
