7,179 research outputs found
A recent analogue for palustrine carbonate environments: The Quaternary deposits of Las Tablas de Daimiel wetlands, Ciudad Real, Spain
No full textLas Tablas de Daimiel, Spain, is one of the scarce, freshwater wetlands areas still preserved in southern Europe. The wetland is fed by surface and groundwater. We studied the Quaternary sedimentary record of Las Tablas in a drill hole that penetrated 38.5 m of shallow-lake and fluvial deposits. Differences in the dominantly micritic muds indicate three main stages of development. In the lowest stage, unit A, (Lower? to Middle Pleistocene) the slightly saline wetland developed under a relatively arid climate that favored slow flow movement of the fluvial system and the disconnection of the ponded areas. In the intermediate stage, unit B, (Middle to Upper Pleistocene) extensive peat developed during wetter conditions. Biosiliceous sediments (diatoms and sponge spicules) also accumulated in this swampy setting. In the latter stage, unit C, (Upper Pleistocene to Holocene) palustrine carbonates formed in a freshwater environment with desiccation events, followed by fluvial reworking of the lake margins. Lithification of these deposits was relatively fast (≤10,000 yr). The studies of the core, including mineralogy, petrography, stables isotopes, and pollen analyses, indicate that these sediments are similar to those of ancient palustrine sequences. Therefore, Las Tablas can be considered as a recent analogue for freshwater palustrine systems that have no marine influence. These systems are very sensitive to changes in climate or base level, and their study is needed to better understand the terrestrial sedimentary record. Study is needed also to determine how to preserve these wetlands.Las Tablas de Daimiel constituyen uno de los escasos humedales de agua dulce que aún se conservan en el sur de Europa, concretamente en España. El humedal está abastecido por aguas superficiales y subterráneas. El registro sedimentario Cuaternario de Las Tablas, se ha estudiado mediante un sondeo en el que se cortaron 38.5 m de depósitos lacustres someros y fluviales, esencialmente carbonatos micríticos. Las características de los sedimentos permiten diferenciar tres principales etapas de sedimentación. En la primera etapa, unidad A, (Pleistoceno Inferior? a Medio) el humedal era ligeramente salino y se desarrolló bajo un clima relativamente árido que favoreció el flujo más lento del sistema fluvial, permitiendo la desconexión de las zonas encharcadas. En la etapa intermedia, unidad B, (Pleistoceno Medio a Superior) el amplio desarrollo de turberas indica condiciones más húmedas, en las que dentro de las áreas pantanosas también se depositaron sedimentos biosilíceos (diatomeas y espículas de esponjas). En la última etapa, unidad C, (Pleistoceno Superior a Holoceno) los sedimentos característicos son carbonatos palustres formados en un ambiente de agua dulce con eventos de desecación seguidos de posterior retrabajamiento de los márgenes lacustres por canales fluviales. La litificación de estos depósitos fue relativamente rápida (<10000 años). El estudio llevado a cabo en el sondeo (mineralogía, petrografía, isótopos estables, análisis polínicos) indica que estos sedimentos son similares a las secuencias palustres del registro geológico. Por tanto, Las Tablas de Daimiel pueden considerarse como un análogo reciente para sistemas palustres de agua dulce que no tengan influencia marina. Estos sistemas son muy sensibles a cambios climáticos y/o del nivel de base, por lo que su estudio es necesario para conocer mejor el registro sedimentario continental, pero también para preservar estos humedales.Ministerio de Educación y CienciaDepto. de Mineralogía y PetrologíaFac. de Ciencias GeológicasTRUEpu
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
Perioperative Goal-Setting Consultations by Surgical Colleagues: A New Model for Supporting Patients, Families, and Surgeons in Shared Decision Making
No full textPatients with postoperative complications are often subjected to prolonged life-sustaining treatment based on erroneous assumptions about their goals of care. Shared decision making is an evidence-based approach that helps ensure patients’ wishes and values are honored in their course of treatment. Perioperative palliative care can help create goal-concordant trajectories of care for high risk, seriously ill, or complicated patients, through sophisticated prognostication, higher-level communication, and recommendations based on the best available evidence and patients’ stated goals and priorities. Here, we present a surgeon-to-surgeon consultative model that surmounts many barriers to perioperative palliative care consultation and, as illustrated in the cases presented herein, offers profound and unique benefits for patients, families, and surgeons alike. While the support of a surgical colleague with palliative care skills can be helpful postoperatively in the setting of unanticipated outcomes or prolonged recovery, it is particularly beneficial when accessed preoperatively for the purposes of goal-concordant decision making and advance care planning. We encourage both individuals and professional societies to develop and expand the niche for surgeons interested in assisting with goal setting and shared decision making for patients on a consultative basis, particularly in the preoperative period
A justiça e o bem na teoria da justiça: uma concepção liberal política e seu contraponto moral
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Filosofia e Ciências Humanas, Programa de Pós-Graduação em Filosofia, Florianópolis, 2013.O objetivo deste trabalho é apresentar a justificação elaborada por John Rawls para os princípios de justiça dirigidos à estrutura básica de uma sociedade democrática, que integram a sua concepção liberal igualitária eminentemente política. Rawls enfrenta, com sua Teoria da Justiça, a questão filosófica de como se fundamenta uma base de justificação pública para que os cidadãos de uma sociedade democrática possam alcançar acordos políticos sobre questões fundamentais que estruturam a vida comum, apesar de professarem doutrinas morais abrangentes diversas e incompatíveis entre si. Para Rawls, essa finalidade se alcança por meio do estabelecimento de uma concepção liberal pública e política. Em seguida, será apresentado como a concepção liberal defendida por Ronald Dworkin faz contraponto à de Rawls, especialmente no que se refere ao modo de suas justificações, uma vez que Dworkin, com o seu liberalismo abrangente, ao contrário de Rawls, defende uma concepção de justiça moralmente justificada The objective of this paper is to present the justification developed by John Rawls to the principles of justice directed to the basic structure of a democratic society, which integrate his liberal egalitarian conception, eminently political. Rawls faces, with his Theory of Justice, the philosophical question of how to justify a public basis of justification, so that citizens of a democratic society can reach political agreements on fundamental issues that structure ordinary life, despite professing diverse and incompatible comprehensive moral doctrines. For Rawls, this purpose is achieved through the establishment of a liberal public conception that is essentially political. Then, it will be presented how the liberal conception defended by Ronald Dworkin contrast to the Rawls one, especially in respect to the method of their justifications, as Dworkin, with its comprehensive liberalism, unlike Rawls, defends a conception of justice morally justifie
Preface
No full textPreface of the special Issue of Discrete and Continuous Dynamical Systems - Series S entitled “Fluid Dynamics and Electromagnetism: Theory and Numerical Approximation
Recensiones [Revista de Historia Económica Año XVII Otoño-Invierno 1999 n. 3 pp. 723-751]
No full textEditada en la Fundación Empresa PúblicaMaluquer de Motes, J. Historia económica de Catalunya, segles XIX i XX (Por Gabriel Tortella).--
Muñoz de Juana, R. Moral y economía en la obra de Martín de Axpilcueta (Por F. Gómez Camacho).--
Rothbard Murray, N. Historia del pensamiento económico (Por Carlos Rodríguez Braun).--
Ferrer i Alós, L. La vinya al Bages (Por Juan Carmona).--
Alonso Olea, E.; Erro Gasca, C , y Arana Pérez,L. Santa Ana de Bolueta, 1841-1998. Renovación y supervivencia en la siderurgia vizcaína (Por Eugenio Torres Villanueva).--
Moreno Luzón, J. Romanones. Caciquismo y política liberal (Por Miguel Ángel Martorell Linares).--
Alonso Álvarez, L. As tecedeiras do fume. Historia da Fábrica de Tabacos da Coruña (Por Eloy Fernández Clemente).--
Erro Gasca, C. Promoción empresarial y cambio económico en Navarra, 1830-1913 (Por Carlos Larrinaga Rodríguez).--
De Vries, J. y Van Der Woude, A. The First Modem Economy. Success, Failure, and Perseverance ofthe Dutch Economy, 1500-1815 (Por Clara Eugenia Núñez).--
Ludow, L. y Marichal, C. La Banca en México, 1820-1920, y Un siglo de deuda pública en México (Por Pablo Martín Aceña)Publicad
Evolución de las finanzas públicas de Santa Ana: Una mirada descriptiva 1985 - 2022
No full textUna estructura fiscal sólida en cualquier nivel de la administración pública es una condición necesaria para realizar todas las acciones de política pública imperiosas y las deseadas para satisfacer las necesidades de sus pobladores.
Este documento presenta una breve revisión histórica de la evolución y composición de los ingresos y gastos de Santa Ana 1985 - 2022. Para realizar nuestro análisis empleamos datos del Sistema de Información del Formulario Único Territorial (SISFUT) y del Departamento Nacional de Planeación (DNP). Para permitir la comparabilidad durante el periodo, todas las cifras son expresadas a precios constantes del 2022 y en términos per cápita. Es decir, se controla por la inflación y por el crecimiento poblacional del municipio o distrito. Así mismo, esto permitirá realizar comparaciones con otras entidades territoriales de Colombia similares.
Para lograr lo anterior, este trabajo está dividido en seis sesiones: la primera sección es la presente introducción. La segunda y tercera sección muestran la evolución de los ingresos y los gastos respectivamente. En la cuarta sección se exponen los Indicadores de Desempeño Fiscal (IDF) para el Distrito. En la quinta sección los resultados del IDF comparado con entidades territoriales similares y en la sexta, los comentarios finales
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
Wyeomyia (Dodecamyia) aphobema Dyar 1918
No full textWyeomyia (Dodecamyia) aphobema Dyar OUR SpEcImENS HaVE all THE cHaRacTERS dEScRIbEd IN LaNE (1953), aNd WERE IdENTIfIEd USINg THE KEY bY THaT aUTHOR. THE IdENTIfIcaTION WaS baSEd ON malE gENITalIa aNd fOURTH-INSTaR laRVaE (FIg. 2E,F,G,H). MalES Of Wy. (Dod.) aphobema aRE IdENTIfIablE bY HaVINg THE gONOcOXITE WITH a ROW Of 8 STRONg SETaE aNd lONg, cURVEd, SpaRSE ONES ON THE mIdlINE; gONOSTYlUS SImplE, ONE-fOURTH THE lENgTH Of THE gONOcOXITE, SlIgHTlY THIcKENEd apIcallY; gONOSTYlaR claW WITH 2 dIffERENTIaTEd TEETH; NINTH TERgUm WITH a VERY NaRROW cONcaVE INTERlObUlaR SpacE, EacH lObE WITH 4 OR 5 bROad cURVEd SETaE WITH pOINTEd apIcES, THE mESal ONES lOWER ON THE lObE THaN THE OUTER ONES. Bionomics and distribution. LaRVaE WERE cOllEcTEd fROm bROmElIad aXIlS. Wyeomyia aphobema IS alSO REcORdEd fROm BOlIVIa, BRazIl, COlOmbIa, EcUadOR, FRENcH GUIaNa, GUYaNa, PERU aNd SURINamE (WalTER REEd BIOSYSTEmaTIcS UNIT, 2013). Collection data. MISIONES PROVINcE: EldORadO, 10-V-2016, 2M, LE, PE, MG, 16-VII-2016, 1F, LE, PE. AlONSO cOll.; MOTTa aNd STEIN dET. SpEcImENS IMR.CUL 10-006 TO -009.Published as part of Stein, Marina, Alvarez, Carla N., Alonso, Ana C., Bangher, Débora N., Willener, Juana A. & Campos, Raúl E., 2018, New records of mosquitoes (Diptera: Culicidae) found in phytotelmata in Northern Argentina, pp. 87-100 in Zootaxa 4399 (1) on page 89, DOI: 10.11646/zootaxa.4399.1.5, http://zenodo.org/record/120647
Determining the need for an expanded fitness component in the Fire Science Program at Milwaukee Area Technical College
No full textIncludes bibliographical references
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