946 resultados para 12930-036
Resumo:
Se presenta una guía-catálogo dirigida a profesores de Bachillerato y COU como ayuda para la preparación de la visita al Museo de la exposición titulada La abstracción española de los años 50 en el Museo Nacional de Arte Reina Sofía. En primer lugar se ofrece una introducción sobre el tema y a continuación se explica el contenido de cada una de las obras y de sus artistas. Además se aportan sugerencias didácticas sobre la preparación del recorrido previo a la visita. Por último se incluyen láminas de las pinturas en forma de catálogo.
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Guía que ofrece una breve introducción al sistema educativo según la LOGSE, y los estudios que pueden realizarse al finalizar la EGB: BUP, COU, Bachillerato, FPI, FPII, Módulos Profesionales, Ciclos formativos, Enseñanza Universitaria, Formación Ocupacional, Aulas-taller y Casas de oficio.
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Se presenta una guía-repertorio de centros de educación de adultos y la oferta formativa de la Comunidad de Madrid para el curso académico 2000-2001. La Comunidad cuenta con una Red compuesta de 54 centros, de los cuales 27 pertenecen a Madrid capital, el resto son de carácter provincial, y un centro que actúa como cabecera. Mediante esta guía se da a conocer su localización, denominación y la oferta que desarrollan este año, tanto en la modalidad presencial como a distancia.
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La obra contiene una relación de los centros de la Comunidad de Madrid dedicados a atender a los alumnos con necesidades educativas especiales. Esta guía recoge los centros educación especial, Escuelas Infantiles y Casas de Niños, los centros que ofrecen recursos de apoyo a la integración educativa e información sobre Equipos de Orientación Educativa y Psicopedagógica, Centros de Apoyo al Profesorado, y Programas de Garantía Social, en la modalidad de iniciación profesional y para alumnos con necesidades educativas especiales. Finalmente incluye un apartado con legislación específica.
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Esta guía recoge la relación de enseñanzas de formación profesional reguladas por la Ley de 1970 y por la LOGSE y las enseñanzas experimentales creadas para la etapa de transición entre las dos leyes, los títulos a los que conducen, y las equivalencias de los títulos antiguos con los nuevos. Los objetivos son facilitar información a las unidades administrativas relacionadas con la formación profesional, y que los organismos que seleccionan personal tengan en cuenta los nuevos títulos de la formación profesional de la LOGSE en sus convocatorias. La guía se divide en tres capítulos: Enseñanzas, de la Ley de 1970, módulos experimentales, y de la LOGSE; Títulos académicos, de técnico auxiliar, de técnico especialista, de técnico, y de técnico superior, ordenados por familias y alfabéticamente; y Equivalencias de los títulos académicos, de los títulos de técnico auxiliar con los de técnico, y de los títulos de técnico especialista con los de técnico superior.
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Existe una versi??n en espa??ol, con el t??tulo "Evaluaci??n Diagn??stica 2010. Informe general de resultados y an??lisis de variables : 4?? Educaci??n Primaria"
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Vision is the sense that provides precise information about one’s position in the environment in relation to objects. The visual system is essential to guide people safely when moving around in the environment. The perception that an individual gets from a particular scene of her/his surroundings is accomplished by eye movements. The current study aims to identify differences in visual strategies between 15 women and 15 men within the age range of 18-24 years, who have been given a task to walk through an obstacle course drawn on the laboratory´s floor. They should start and finish at a predefined location. Twelve pylons were used as obstacles to be avoided during the walking.The participants' eye movements were recorded using the Mobile Eye model 1.35. The Wilcoxon-Mann-Whitney Test was used for the statistical analysis. Significant differences occurred between men and women, in the duration of fixations: the men spend more time observing the finishing area than women (z=-1.929, p=.054); and in the number of fixations: before starting the task, the men fixate more often the middle phase of the obstacle course (z=-2.085, p=.037). Once they commence, the women fixate more the points outside the obstacle course than the men (z=-2.093, p=.036).
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La ciudad del migrante es una más entre las múltiples que coexisten y se entrecruzan en Quito. Es la ciudad que surge del diario enfrentamiento del migrante con la urbe. Es la ciudad percibida, imaginada, vivida cotidianamente por el indígena que llega a Quito en busca de trabajo. A partir de las prácticas que despliega en la urbe, el migrante indígena configura una ciudad en movimiento cuyas fronteras no están claramente definidas y cuya estructura, como un conjunto de redes fluidas, cambia en el tiempo y en el espacio. Acceder a la representación de esa ciudad, de ese Quito construido a partir de prácticas efímeras, apegadas a las ocasiones específicas en que ocurren, solo es posible si se estudian los relatos de esos migrantes que narrativizan ese mismo enfrentamiento y la apropiación de la ciudad. Al estudiar los relatos la autora busca otro texto en estos textos: la ciudad con los sentidos que el migrante ha adscrito, los lugares significativos que él ha establecido, las connotaciones que estos lugares provocan. Estos sentidos no son fijos ni definitivos. Siempre habrá algo que cambie, que falte, que se escape: la ciudad es un tejido que está perpetuamente resignificándose. Pero la ciudad es también esa trama móvil e inestable de redes de socialidad y de transacción que le permiten al migrante indígena ubicarse y desplazarse en un espacio y en un tiempo que no coinciden con los que dejó en la comunidad. Es, en definitiva, un territorio nuevo que está incesantemente recreándose y redefiniéndose.
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Diffusive isotopic fractionation factors are important in order to understand natural processes and have practical application in radioactive waste storage and carbon dioxide sequestration. We determined the isotope fractionation factors and the effective diffusion coefficients of chloride and bromide ions during aqueous diffusion in polyacrylamide gel. Diffusion was determined as functions of temperature, time and concentration. The effect of temperature is relatively large on the diffusion coefficient (D) but only small on isotope fractionation. For chlorine, the ratio, D-35cl/D-37cl varied from 1.00128 +/- 0.00017 (1 sigma) at 2 degrees C to 1.00192 +/- 0.00015 at 80 degrees C. For bromine, D-79Br/D-81Br varied from 1.00098 +/- 0.00009 at 2 degrees C to 1.0064 +/- 0.00013 at 21 degrees C and 1.00078 +/- 0.00018 (1 sigma) at 80 degrees C. There were no significant effects on the isotope fractionation due to concentration. The lack of sensitivity of the diffusive isotope fractionation to anything at the most common temperatures (0 to 30 C) makes it particularly valuable for application to understanding processes in geological environments and an important natural tracer in order to understand fluid transport processes. (C) 2009 Elsevier Ltd. All rights reserved.
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An experiment was conducted to determine what effect simple treatments might have on the voluntary intake by goats in Nepal of Eupatorium adenophorum, an invasive weed that is usually only consumed by goats to a very limited extent. Samples of E. adenophorum were collected and either untreated, soaked for 2 h or wilted for 2 h before being oven dried (60 degrees C) and ground. Soaking and wilting had little effect on the chemical composition of E. adenophorum, but did increase (P=0.036) its in vitro organic matter degradability, by approximately 8%. The short-term intake rate (STIR) of treated and untreated E. adenophorum was then estimated with eight goats. Soaking time (from 2 to 24 h) was not related to STIR (r = -0.111, P=0.198), but the time E. adenophorum was left to wilt (from 2 to 48h), was positively related to STIR (r=0.521, P<0.001), with values of STIR (g dry matter/min kg goat liveweight(0.75)) being 0.405, 0.649,1.058, S.E.M. 0.088 for E. adenophorum, that had been wilted for 0, 24 and 48 h respectively (P<0.001). Liveweight change of goats and voluntary intake of E. adenophorum by goats was then estimated with 24 goats. E. adenophorum was fed either unwilted, or wilted for 24 or 48 h. It was fed as the sole forage or as a 3:1 mixture (dry matter basis) with Ficus cunia. There was a linear (P<0.001) and quadratic (P<0.01) increase in the intake of total forage and E. adenophorum with wilting time of E. adenophorum. Offering Ficus cunia increased total forage intake, but decreased E. adenophorum intake (P<0.05). After four weeks, there was virtually no change in goat liveweight and no significant difference between treatments. The results suggest that wilting E adenophorum for 24 h could increase its intake by goats, and thereby increase its usefulness, as a potential source of forage in the dry season of Nepal, when forage scarcity is a common constraint to livestock production. (C) 2007 Elsevier B.V. All rights reserved.
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Apolipoprotein A-IV (apoA-IV) inhibits lipid peroxidation, thus demonstrating potential anti-atherogenic properties. The aim of this study was to investigate how the inhibition of low density lipoprotein (LDL) oxidation was influenced by common apoA-IV isoforms. Recombinant wild type apoA-IV (100 mu g/ml) significantly inhibited the oxidation of LDL (50 mu g protein/ml) by 5 mu M CuSO4 (P < 0.005), but not by 100 mu M CuSO4, suggesting that it may act by binding copper ions. ApoA-IV also inhibited the oxidation of LDL by the water-soluble free-radical generator 2,2'-azobis(amidinopropane) dihydrochloride (AAPH; I mM), as shown by the two-fold increase in the time for half maximal conjugated diene formation (T-1/2; P < 0.05) suggesting it can also scavenge free radicals in the aqueous phase. Compared to wild type apoA-IV, apoA-IV-S347 decreased T-1/2 by 15% (P = 0.036) and apoA-IV-H360 increased T-1/2 by 18% (P = 0.046). All apoA-IV isoforms increased the relative electrophoretic mobility of native LDL, suggesting apoA-IV can bind to LDL and acts as a site-specific antioxidant. The reduced inhibition of LDL oxidation by apoA-IV-S347 compared to wild type apoA-IV may account for the previous association of the APOA4 S347 variant with increased CHD risk and oxidative stress. (c) 2006 Elsevier Ireland Ltd. All rights reserved.
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In mammalian cells, DNA ligase IIIalpha and DNA ligase I participate in the short- and long-patch base excision repair pathways, respectively. Using an in vitro repair assay employing DNA ligase-depleted cell extracts and DNA substrates containing a single lesion repaired either through short-patch (regular abasic site) or long-patch (reduced abasic site) base excision repair pathways, we addressed the question whether DNA ligases are specific to each pathway or if they are exchangeable. We find that immunodepletion of DNA ligase I did not affect the short-patch repair pathway but blocked long-patch repair, suggesting that DNA ligase IIIa is not able to substitute DNA ligase I during long-patch repair. In contrast, immunodepletion of DNA ligase IIIa did not significantly affect either pathway. Moreover, repair of normal abasic sites in wild-type and X-ray cross-complementing gene 1 (XRCC1)-DNA ligase IIIalpha-immunodepleted cell extracts involved similar proportions of short- and long-patch repair events. This suggests that DNA ligase I was able to efficiently substitute the XRCC1-DNA ligase IIIa complex during short-patch repair.
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The strong intermolecular interactions mediated by short hydrophobic sequences (e.g., 17-20, -L-Leu-L-Val-L-Phe-L-Phe-) in the middle of A beta are known to play a crucial role in the neuropathology of Alzheimer's disease. FTIR, TEM and Congo red binding studies indicated that a series of L-Ala substituted terminally protected peptides related to the sequence 17-20 of the beta-amyloid peptide, adopted D-sheet conformations. However, the Aib-modified analogues disrupt the D-sheet structure and switch over to a 310 helix with increasing number of Aib residues. X-ray crystallography shed some light on the change from sheet to helix at atomic resolution. (c) 2006 Elsevier Ltd. All rights reserved.
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Carbamoyl methyl pyrazole compound of palladium(II) chloride of the type [PdCl2L2] (where L = C5H7N2CH2CON(C4H9)(2), C5H7N2CH2CON((C4H9)-C-i)(2), C3H3N2CH2CON(C4H9)(2), or C3H3N2CH2CON((C4H9)-C-i)(2)) has been synthesized and characterized by IR and H-1 NMR spectroscopy. The structure of the compound [PdCl2{(C3H3N2CH2CONBu2}2)-Bu-i] has been determined by single crystal X-ray diffraction and shows that the ligands are bonded through the soft pyrazolyl nitrogen atom to the palladium(II) chloride in a trans disposition. (c) 2007 Elsevier B.V. All rights reserved.
Resumo:
The terpenoid chiral selectors dehydroabietic acid, 12,14-dinitrodehydroabietic acid and friedelin have been covalently linked to silica gel yielding three chiral stationary phases CSP 1, CSP 2 and CSP 3, respectively. The enantiodiscriminating capability of each one of these phases was evaluated by HPLC with four families of chiral aromatic compounds composed of alcohols, amines, phenylalanine and tryptophan amino acid derivatives and beta-lactams. The CSP 3 phase, containing a selector with a large friedelane backbone is particularly suitable for resolving free alcohols and their derivatives bearing fluorine substituents, while CSP 2 with a dehydroabietic architecture is the only phase that efficiently discriminates 1, 1'-binaphthol atropisomers. CSP 3 also gives efficient resolution of the free amines. All three phases resolve well the racemates of N-trifluoracetyl and N-3,5-dinitrobenzoyl phenylalanine amino acid ester derivatives. Good enantioseparation of beta-lactams and N-benzoyl tryptophan amino acid derivatives was achieved on CSP 1. In order to understand the structural factors that govern the chiral molecular recognition ability of these phases, molecular dynamics simulations were carried out in the gas phase with binary diastereomeric complexes formed by the selectors of CSP 1 and CSP 2 and several amino acid derivatives. Decomposition of molecular mechanics energies shows that van der Waals interactions dominate the formation of the diastereomeric transient complexes while the electrostatic binding interactions are primarily responsible for the enantioselective binding of the (R)- and (S)-analytes. Analysis of the hydrogen bonds shows that electrostatic interactions are mainly associated with the formation of N-(HO)-O-...=C enantio selective hydrogen bonds between the amide binding sites from the selectors and the carbonyl groups of the analytes. The role of mobile phase polarity, a mixture of n-hexane and propan-2-ol in different ratios, was also evaluated through molecular dynamics simulations in explicit solvent. (c) 2006 Elsevier Ltd. All rights reserved.