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Search Results: 1 - 10 of 214358 matches for " Rodríguez Rellán "
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The management of quartz and slate resources in the Iberian Chalcolithic: the case of the “Santuario” at El Pedroso (Trabazos de Aliste, Zamora)
Fábregas Valcarce, Ramón,Rodríguez Rellán, Carlos
Trabajos de Prehistoria , 2008,
Abstract: The analysis of the lithic artifacts from the “Santuario” sector of El Pedroso has allowed us to determine a strategy of exploitation of the local raw materials, mainly quartz and slate. The specific mechanical properties of those materials led the prehistoric people to the adoption of technical solutions such as bipolar flaking, with the aim of overcoming the structural difficulties posed by this type of rocks. El análisis de los artefactos recuperados en el sector del “Santuario” ha permitido determinar la existencia de una estrategia de explotación de materias primas locales, principalmente el cuarzo y la pizarra. Las peculiares características mecánicas de estos materiales han derivado en la adopción por parte de los habitantes prehistóricos de este yacimiento de soluciones técnicas como la reducción bipolar que permiten superar las dificultades cualitativas de esta clase de rocas.
A media luz. Grabados de la Prehistoria Reciente en abrigos galaicos
Fábregas Valcarce, Ramón,Rodríguez Rellán, Carlos
Trabajos de Prehistoria , 2012, DOI: 10.3989/tp.2012.12081
Abstract: The systematic survey of rock art in the area of the town council of Porto do Son (A Coru a) has allowed us to find nearly two hundred carved surfaces, two of them located within rock shelters. Two other examples in the Western regions of Galicia must be added to those. The motifs inside the rock shelters are exactly the same as those found in the open-air petroglyphs, which can be roughly dated to the third millennium BC. These finds attest to the existence of an intentional constraint on the visibility of these graphic manifestations. The coexistence of motifs inside cavities and others located outdoors, even on fairly conspicuous vertical friezes, shows the variability of this phenomenon and allows us to reflect on the different audiences at which the rock sites would have been aimed. La prospección sistemática de arte rupestre en el Ayuntamiento de Porto do Son (A Coru a) ha permitido la localización de casi dos centenares de grabados, dos de ellos en abrigos graníticos. A estos últimos se suman otros dos casos en las comarcas occidentales de Galicia. La temática presente es idéntica a la del arte galaico al aire libre, datado grosso modo en el III milenio a.C. Estos hallazgos plantean, por otra parte, la intencionada restricción física sobre la visualización de este fenómeno. La convivencia de motivos en el interior de cavidades con otros situados al aire libre e incluso en frisos verticales fácilmente perceptibles demuestra la variabilidad de estas manifestaciones y nos permite reflexionar sobre la audiencia a la que habrían estado destinadas las diferentes estaciones rupestres.
Changes in the proteomic and metabolic profiles of Beta vulgaris root tips in response to iron deficiency and resupply
Rubén Rellán-álvarez, Sofía Andaluz, Jorge Rodríguez-Celma, Gert Wohlgemuth, Graziano Zocchi, Ana álvarez-Fernández, Oliver Fiehn, Ana López-Millán, Javier Abadía
BMC Plant Biology , 2010, DOI: 10.1186/1471-2229-10-120
Abstract: Root tip extract proteome maps were obtained by 2-D isoelectric focusing polyacrylamide gel electrophoresis, and approximately 140 spots were detected. Iron deficiency resulted in changes in the relative amounts of 61 polypeptides, and 22 of them were identified by mass spectrometry (MS). Metabolites in root tip extracts were analyzed by gas chromatography-MS, and more than 300 metabolites were resolved. Out of 77 identified metabolites, 26 changed significantly with Fe deficiency. Iron deficiency induced increases in the relative amounts of proteins and metabolites associated to glycolysis, tri-carboxylic acid cycle and anaerobic respiration, confirming previous studies. Furthermore, a protein not present in Fe-sufficient roots, dimethyl-8-ribityllumazine (DMRL) synthase, was present in high amounts in root tips from Fe-deficient sugar beet plants and gene transcript levels were higher in Fe-deficient root tips. Also, a marked increase in the relative amounts of the raffinose family of oligosaccharides (RFOs) was observed in Fe-deficient plants, and a further increase in these compounds occurred upon short term Fe resupply.The increases in DMRL synthase and in RFO sugars were the major changes induced by Fe deficiency and resupply in root tips of sugar beet plants. Flavin synthesis could be involved in Fe uptake, whereas RFO sugars could be involved in the alleviation of oxidative stress, C trafficking or cell signalling. Our data also confirm the increase in proteins and metabolites related to carbohydrate metabolism and TCA cycle pathways.Two different strategies of Fe uptake have been described in plants. The so-called chelation strategy (or Strategy II), which is mainly found in graminaceous plants, is based on the excretion of phytosideropores (PS) to the rhizosphere. Phytosideropores rapidly chelate Fe(III), to form Fe(III)-PS chelates that are subsequently transported into the root cells through a specific transporter. The so-called reduction strategy (or St
Transnationalism between Galicia and Northern Portugal: An Emerging Cosmopolitism  [PDF]
Xaquín S. Rodríguez Campos
Sociology Mind (SM) , 2017, DOI: 10.4236/sm.2017.74010
Abstract: This paper deals with the formation of a transnational society between Galicia and the Northern part of Portugal, analysed from an anthropological point of view. Concepts like cosmopolitism, ethnicity, liminality, and memory are central in the theoretical discussion for interpreting the processes of transnationalism. The suppression of the borders in the post-national European Union made the creation of transnational communities near the states’ borders possible. This process, in the case of the Galician-Portuguese borders, has developed depending on the ethnic processes, once the Spanish and Portuguese states attained democracies. The concept of a cosmopolitan nation has also been central in the discussion of how ethnicity and nationalism intervene in the process of transnationalism.
Manfreda parva (Agavaceae), especie nueva del estado de Guerrero, México
Rodríguez, Aarón;
Acta botánica mexicana , 2009,
Abstract: as a result of recent botanical collections in mexico, manfreda parva is described as a new species from the state of guerrero. it is characterized by its small, linear and falcate leaves. manfreda parva belongs to the m. guttata group and based on leaf characteristics it is similar to m. bulbulifera. however, m. parva has more leaves, the filaments are shorter, the perianth tube is larger and the perianth lobes are smaller than in m. bulbulifera. so far, the new species is known only from the sierra de taxco near the town of the same name.
Gasto por procedimiento en la especialidad de cardiología intervencionista en pacientes con enfermedad coronaria del Seguro Social, Seccional Valle del Cauca: Noviembre 2003-diciembre 2004
Rodríguez,Hernán;
Colombia Médica , 2006,
Abstract: introduction: coronary illness affects a high proportion of affiliated with the seguro social (iss) departamento (=state) valle del cauca. this paper describes the costs in the specialty of interventionist cardiology of the health promoter enterprise (eps) because of this illness among november 2003-december 2004. the costs are larger than the budget of the iss for this illness. this unbalance inside security social system contemporary in colombia , that is a contributive regime, affects to the iss because a high number of affiliated are adults of 45 years. the compensated population of the iss valle del cauca is 423,440 people of which 43% is older 45 years, segment of age that concentrates the risk of coronary illness. metodology: it is a descriptive study. it analyses the distribution of compensated population by age and sex; besides the payment of iss valle del cauca to the health institutions (ips) in the interventionist cardiology specialty. the information was taken of the register made by the ips to the social secure institute and crossed with the individual registers of procedures in health (rips) to identify the patients with coronary illness and to rate them in accordance with the international illness codes (cie 10) likewise the book about activities, processing and interventions of the obligatory health program (mapipos). universe: 1,349 processing. the population was 1,103 affiliated patients with the seguro social with coronary illness diagnoses. analysis and results: the compensated population of iss represents 9.3% of valle del cauca population (4?532,378 inhabitants in the departamento and 423,400 compensated). of them 43% are 45 years old or more and are in risk for suffering coronary illness and need medical intervention. the iss valle del cauca paid out to ips with interventionist cardiology services the total of $5?320,786.046 more of five thousand millions pesos for 1,349 procedures realized to 1103 patients of coronary illness. this money rep
Ense?ar geografía para los nuevos tiempos
Rodríguez,Efrén;
Paradígma , 2006,
Abstract: this a documental research?s advances about teaching geography for the new times and it arises from the problematic produces by the lack of implementation of learning strategies that could? promotes a pleasant, collaborative,? solving problems class, that it restrict to adapt itself to the quali-quantitative changes of the venezuelan educative process. one of the problems confronted by teaching geography is, fundamentally, the lack of sufficient motivation in the students, as a results of teacher centered classes, inadequate teaching strategies that don?t allows to integrate each student in the school work. furthermore, the excessive focus in descriptions and memorize facts,? copies, surcharges of tasks, rigidity and slant of the programs, whose? do not pay attention to the expectations of the children, beside the deficient methodology of novel lessons in agreement with the historical-social changes of the country.? this proposal focus in a more dynamic teaching, integrated to the specific reality of the student, it takes him or her to internalize the subjects of social science. particularly we? insisted on locating the teaching? of geography as part of the educative changes of the country, with emphasis in new methodology, contents and strategies of teaching this area. the circumstances and exigencies of a changing world demand a better preparation to accede in equal terms to the technical-scientists requirements of this society,? the teacher is the center of these innovations,? his or her daily contact with the classroom compromise them to a theorical -methodologic knowledge of the subjects that contributes to an innovating class in this discipline and whose aims looks to locate us in the experiential field of the educative task.
MANFREDA PARVA (AGAVACEAE), ESPECIE NUEVA DEL ESTADO DE GUERRERO, MéXICO
Aarón Rodríguez
Acta botánica mexicana , 2009,
Abstract: Como resultado de recientes colectas botánicas en México, se describe a Manfreda parva del estado de Guerrero. Esta especie nueva se caracteriza por sus hojas peque as, lineares y falcadas. Pertenece al grupo de M. guttata y por la forma de sus hojas es similar a M. bulbulifera. Sin embargo, difiere de ésta en el número de hojas, el tama o de los estambres, el tubo del perianto y los lóbulos del mismo. Se discuten sus afinidades y diferencias morfológicas. Manfreda parva se conoce únicamente de la Sierra de Taxco cercana a la ciudad del mismo nombre.
Yamada, Gustavo. Retornos a la educación superior en el mercado laboral: vale la pena el esfuerzo? Lima: Consorcio de Investigación Económica y Social - Centro de Investigación de la Universidad del Pacífico, 2007. 98 pp.
Efraín Rodríguez
Revista Economía , 2008,
Abstract: La rese a no presenta resumen.
Un crimen de odio por homofobia en Ciudad Juárez
Efraín Rodríguez
El Cotidiano , 2010,
Abstract: Los crímenes de odio se caracterizan por su extrema crueldad; no solamente acaban con la vida del otro, sino que, simbólicamente, pretenden acabar con todo lo que significa el se alado como diferente. Los crímenes de odio por homofobia son la manifestación más acabada de la homofobia social, que es un fenómeno encarnado en nuestra cultura sexista, heterosexista y reproductora. Los asesinos, pocas veces, son aprehendidos y sentenciados, pero son apenas la parte más visible del problema: todos y todas participamos en la comisión de estos asesinatos en la medida en que reproducimos la homofobia social.
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