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Search Results: 1 - 10 of 2152 matches for " Maldonado Polo "
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Científicos americanos en las cortes constituyentes. La cuestión ultramarina
Maldonado Polo, Jose Luis
Revista de Indias , 2003,
Abstract: This article studies the performance in the Spanish Cortes of three well known American Botanists in the constitutional phase previous to Independence of their countries of origin: Francisco Antonio Zea from New Granada, José María Lequerica from Quito, and Pablo de la Llave from New Spain. Their political motivations and their positioning vis à vis the Parliamentary debates that took place in regard to problems affecting the American colonies are analyzed through two main sources: the Actas de Bayona and the Diario de Sesiones. Con este estudio pretendemos contribuir al mayor conocimiento sobre un capítulo poco estudiado de la historia de la ciencia hispanoamericana. Lo haremos a través del seguimiento de las actuaciones como diputados en las Cortes espa olas de tres destacados botánicos americanos en las etapas constitucionales anteriores a la emancipación de sus países de origen: el neogranadino Francisco Antonio Zea, el quite o José Mejía Lequerica y el novohispano Pablo de la Llave. Damos a conocer los impulsos políticos que les motivaron y sus posiciones ante las cuestiones más relevantes debatidas en el parlamento en relación con los problemas que afectaban a las colonias americanas. Las Actas de Bayona y el Diario de Sesiones de las Cortes constituyen las fuentes principales del presente trabajo.
La botánica en el exilio. Mariano Lagasca y el Hortus Siccus Londinensis
Maldonado Polo, José Luis
Arbor : Ciencia, Pensamiento y Cultura , 2006, DOI: 10.3989/arbor.2006.i718.22
Abstract: The present work is part of research work upon the History of Madrid’s Botanic Garden in the first half of the nineteenth century. The main objective of this work focuses on the institution’s period under the direction of Mariano de Lagasca and his subsequent exile in the United Kingdom, after the major setback that Fernando VII′s absolutist regime meant for Spanish Science on its return in 1823. In a previous article the intervention of Lagasca and Clemente as deputies to Constitutional Courts during the Trienio Liberal has been presented. In this, we undertake an analysis of the context in which the first edition of Lagasca ′s Hortus Siccus Londinesis appeared in London and its publication in Spanish in order to show a little-known chapter of Spanish Botany. El presente trabajo se enmarca dentro del proyecto de investigación sobre la historia del Jardín Botánico de Madrid en la primera mitad del siglo XIX. Dentro del esquema general, el objetivo principal de este trabajo trata de la etapa de Mariano de Lagasca al frente de la institución y su posterior exilio al Reino Unido, tras el descalabro que supuso para la ciencia espa ola el regreso del absolutismo de Fernando VII en 1823. En un artículo anterior se ha expuesto la intervención de Lagasca y Clemente como diputados de las Cortes Constitucionales durante el Trienio Liberal. En éste abordamos el análisis del contexto en el que se produjo la aparición en Londres de la primera edición del Hortus Siccus Londinesis de Lagasca y su publicación en espa ol, con la finalidad de dar a conocer un capítulo poco conocido de la ciencia botánica espa ola.
Las expediciones científicas espa olas en los siglos XIX y XX en el archivo del Museo Nacional de Ciencias Naturales
Maldonado Polo, J. Luis
Asclepio : Revista de Historia de la Medicina y de la Ciencia , 2001,
Abstract: This paper offers the catalogue of the documental series about spanish travels and scientific expeditions during the XIXth and XXth Centuries. These documents are at the Museo Nacional de Ciencias Naturales. Presentamos en este trabajo la catalogación de las series documentales sobre viajes y expediciones científicas espa olas realizadas en los siglos XIX y XX, existentes en el Museo Nacional de Ciencias Naturales.
Los recursos naturales de Centroamérica. El origen de la expedición botánica al reino de Guatemala
Maldonado Polo, J. Luis
Asclepio : Revista de Historia de la Medicina y de la Ciencia , 1995,
Abstract: The scientific commission to Central America originated like a continuation of the three big botanical Spanish expeditions being carried out during the reign of Carlos III through the American territories. The presence of the naturalists José Longinos Martínez and José Moci o, and the painter Vicente de la Cerda at the capital of Guatemala was reason of great interest in the Capitanía General , and it caused great impact on the Enlightened institutions of the time. Friends' of the Country Economical Society and the Consulado of Commerce supported the works of the members of the expedition contributing to the institutionalization of the Natural History in Central America. La comisión científica a Centroamérica se originó como una continuación de las tres grandes expediciones botánicas espa olas realizadas durante el reinado de Carlos III por los territorios americanos. La presencia de los naturalistas José Longinos Martínez y José Moci o, y el pintor Vicente de la Cerda en la capital de Guatemala fue motivo de gran interés en la Capitanía General, y causó gran impacto en las instituciones ilustradas de la época. La Sociedad Económica de Amigos del País y el Consulado de Comercio apoyaron los trabajos de los expedicionarios contribuyendo a la institucionalización de la historia natural en América Central.
Documentos del Museo Nacional de Ciencias Naturales de Madrid, referentes a las cátedras de Botánica del Real Jardín Botánico
Maldonado Polo, José Luis
Asclepio : Revista de Historia de la Medicina y de la Ciencia , 1996,
Abstract: As an essential part of the research project The Natural History in Madrid at the end of the Old Regime (CAM, n 180/ 92), has been carried out the study of the manuscripts and printed funds existent in the National Museum of Natural Sciences from Madrid (MNCN), belonging or relative to the Royal Botanical Garden from Madrid (RJB).° The stuff have been ordered and classified, with the outcome which we presented next. Como parte sustancial del proyecto de investigación La Historia Natural en Madrid al final del Antiguo Régimen (CAM, n° 180/92), se ha realizado el estudio de los fondos manuscritos e impresos existentes en el Museo Nacional de Ciencias Naturales de Madrid (MNCN), pertenecientes o relativos al Real Jardín Botánico de Madrid (RJB). Los materiales se han indizado, ordenado y clasificado, con el resultado que presentamos a continuación.
Análise combinatória de popula??es de milho pipoca em topcrosses
Seifert, Adilson Luiz;Carpentieri-Pípolo, Valéria;Ferreira, Josué Maldonado;Gerage, Ant?nio Carlos;
Pesquisa Agropecuária Brasileira , 2006, DOI: 10.1590/S0100-204X2006000500008
Abstract: the objective of this work was to evaluate the heterotic potential of 14 popcorn populations through topcrosses. in the 1997/1998 crop year, topcrosses hybrids were obtained as a result of crosses between the populations and the tester, which was composed of an equal mixture of seeds from all 14 populations. the populations and the hybrids were evaluated in field, in a randomized block design, with three replications. the estimates for genetic parameters and the topcrosses variance analyses were made. based on the results of yield and popping expansion of the experiments, the following populations were selected for the syntheses of composite: uel si, uel pap, uel zp, uel pp, cms 43 and rs 20. this broad composite is the most promising for use as base populations in breeding programs.
Signaling-mediated control of ubiquitin ligases in endocytosis
Simona Polo
BMC Biology , 2012, DOI: 10.1186/1741-7007-10-25
Abstract: Ubiquitination modifies proteins in a variety of ways, the significance of which we only partially comprehend. Ubiquitin can be attached: as an individual moiety to a single or multiple lysine residues of substrate (mono- or multiple monoubiquitination); as chains of ubiquitin moieties that are interlinked through any one of the seven lysine residues of ubiquitin (for example K48- or K63-linked chains); or as branched chains, to name but a few [1]. The cell interprets each of these modifications as a distinct signal. The first described role of ubiquitination as mediating protein degradation through targeting to the proteasome has now been complemented with numerous other functions [2]. For example, the signal encoded by K63-linked chains can mediate functions as diverse as receptor endocytosis [3,4], activation of protein kinases in the NF-κB pathway and the initiation of error-free DNA repair [2].Signal transduction from transmembrane cell surface receptors to nuclear transcription factors is regulated at multiple levels by protein ubiquitination. The covalent attachment of one, or often more, ubiquitin moieties has emerged as the principal mechanism for termination of signaling, by targeting the receptor for endocytosis and, ultimately, degradation in the lysosome [3]. This device controls a vast array of mammalian signaling receptors, such as receptor tyrosine kinases, G-protein coupled receptors (GPCRs), growth hormone receptors, the major histocompatibility complex I, NOTCH, various channels and transporters, and cytokine and interferon receptors [3]. Receptors that are internalized after activation are directed first into the endosomes of the endocytic pathway, and then into multivesicular bodies (MVBs), which undergo a process of maturation that ends with fusion with the lysosome and delivery of the contents for degradation. Ubiquitination of the receptor provides the crucial signal for entering this pathway [3,5-7].Subsequent delivery of membrane receptors
El DENEPER: Una Metodología para Detectar Necesidades de Perfeccionamiento Docente
Revista de Pedagogía , 2003,
Abstract: here, a teacher training needs analysis model designed for university professors is presented. the issue of university transformation is addressed from the point of view of training, updating and improvement of the teaching staff. in this sense, the analysis is made by acknowledging the existing gaps between what instructors actually do and what they are expected to be doing. the deneper method is characterized by the use of shared knowledge about the strengths and weaknesses present in the teaching profession and which in turn are ?problematized? in order to turn personal insights into dialogic communicative acts. with this frame of mind, we move forward from traditional needs analysis into teacher perfecting on the basis of using teacher previous insights to gain knowledge about what they need to know or experience in their normal activities. the model is based on nine steps: it tries to structure comprehension of the pedagogical process in order to produce reflexive teaching practices and to come up with a teacher training program designed on certain shared principles. the model has been put into practice in the teacher updating system of our university (sadpro), a process in which a group of staff members from various institutions of higher learning have been participating.
Investigar en Africa
Vallejo, Polo
Revista de la Lista Electrónica Europea de Música en la Educación , 2000,
Synchronic and diachronic variation phenomena in inverted interrogative and related contexts in Northern Italian dialects
Chiara Polo
Nordlyd : Troms? University Working Papers on Language & Linguistics / Institutt for Spr?k og Litteratur, Universitetet i Troms? , 2007,
Abstract: In the spirit of Ferdinand de Saussure, the present contribution is offered as an integrated synchronic and diachronic analysis of syntactic variation phenomena across a selected number of Veneto and other Northern Italian dialects: the main focus of the study will be on (unembedded) interrogative clauses. The goal targeted is to account for the wide range of structural options allowed by contemporary dialects (VS/SV/SVS) in the light of the discrepant evolutionary stages they embody and reflect, as independently reconstructed and singled out in the history of the Venetian dialect. Seemingly idiosyncratic contemporary inter-dialectal variation phenomena are thus viewed as functions of the different parametric values dialects activate in dependence on the position they occupy in an evolutionary continuum which promotes the elimination of an anciently fully productive inverted pattern VS (along with the syntactic rule V-to-C which possibly underlies its generation).
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