Comparecencia del Excmo. Sr. Ministro de Educación y Ciencia en el Pleno del Congreso de los Diputados, el día 18 de octubre de 1988.

Transcripción del discurso pronunciado por el Ministro de Educación y Ciencia, Javier Solana, ante el Pleno del Congreso de los Diputados, el 18 de octubre de 1998, para explicar las líneas generales de su política educativa y los objetivos de su plan de actuación.

El Sr. Se y su extraña familia : una aproximación cognitiva a la presentación de los usos del 'se' en clase de E-LE.

Memoria de máster (Universidad de Granada, 2006). Resumen basado en el de la publicación

Declaración del Sr. Olof Palme, Ministro de Educación sueco, en la VI Conferencia de Ministros Europeos de Educación.

Discurso de apertura de Olof Palme a los debates sobre los documentos presentados por la OCDE, 'Desarrollo de la Educación Secundaria y el Consejo de Europa' y 'Evolución y perspectivas de la Educación escolar'. En él, se destaca, entre otras, las siguientes ideas; la consideración del sistema educativo como un conjunto articulado, cuyos niveles y modalidades no pueden ser considerados de forma independiente; la tendencia a fusionar la enseñanza primaria superior con la enseñanza media elemental en un período educativo único y obligatorio; la aceptación de la educación como un instrumento de nivelación y comprensión entre seres humanos con diferencias familiares y sociales y diferentes aptitudes e intereses; el modelo de 'escuela comprensiva', o unificada y polivalente como esquema organizativo de la educación secundaria que evite la discriminación educativa y proporcione al individuo el tratamiento individualizado que requiere el desarrollo integral de su personalidad; la proclamación de los principios de colaboración y participación de profesores, estudiantes, familia y sociedad en la organización y gobierno de los centros; y la idea de la 'educación postsecundaria recurrente', es decir, la organización de la enseñanza superior, de forma que los diferentes niveles y modalidades puedan cursarse alternando con períodos de trabajo.

Isótopos radiactivos.

Se inicia con una pequeña reseña histórica sobre el descubrimiento de la radioactividad. Se analiza su naturaleza, y características de los tres tipos de radiaciones. Continúa con las propiedades de los isótopos y de los isótopos radioactivos. Radioactividad artificial. Aplicaciones de los radioisótopos. Peligros que implica el uso de los radioisótopos Medidas de protección y concluye con una breve reseña sobre los radioisótopos en el momento actual.

La universidad española ofrenda al Sr. Ibáñez Martín las insignias de la Gran Cruz de Alfonso X el Sabio.

Crónica de los actos acontecidos en la Universidad Central de Madrid a raíz de la imposición de la Gran Cruz de Alfonso X el Sabio a D. José Ibáñez Martín, Ministro de Educación Nacional, tras haber elaborado la Ley de Ordenación Universitaria, aprobada por las Cortes Generales en julio de 1943.

El Sr. López Otero, alma técnica de la reconstrucción de la Ciudad Universitaria, condecorado.

Con motivo de la celebración del primer centenario de la creación de la Escuela Universitaria de Arquitectura de Madrid, su exdirector por aquella época, D. Modesto López Otero, es condecorado de manos del Ministro de Educación Nacional, Sr. Ibáñez Martín, con la gran cruz de Alfonso X, El Sabio, por una vida entregada a la arquitectura y por su labor particular en dicha Escuela.

La educación nacional española, 1957-1961 : [discurso del Sr. Ministro de Educación Nacional en la reunión del Pleno del Consejo Nacional de Educación, pronunciado en Madrid el 23 de mayo de 1961].

Transcripción del discurso que pronunció el Ministro de Educación Nacional, D. Jesús Rubio García-Mina, en la reunión del Pleno del Consejo Nacional de Educación, el 23 de mayo de 1961 en Madrid, en donde habló de la Enseñanza Primaria, las Enseñanzas Técnicas, la Enseñanza Universitaria, Enseñanza Media, Enseñanza Laboral, la Extensión Cultural, las Bellas Artes, Archivos y bibliotecas y por último, la protección escolar y ayuda al estudio.

Discurso del Sr. Ministro de Educación y Ciencia, D. Cruz Martínez Esteruelas en la XVIII Conferencia General de la Unesco.

Es continuación de la publicación: Boletín de la Comisión Española de la UNESCO

Aportaciones a la evaluación del lenguaje mediante BLOC-C y BLOC-SR

Resumen en inglés. Resumen basado en el de la publicación

Genotype x environment interaction in the uptake of Cs and Sr from soils by plants

The soil-plant transfer factors for Cs and Sr were analyzed in relationship to soil properties, crops, and varieties of crops. Two crops and two varieties of each crop: lettuce (Lactuca sativa L.), cv. Salad Bowl Green and cv. Lobjoits Green Cos, and radish (Raphanus sativus L.), cv. French Breakfast 3 and cv. Scarlet Globe, were grown on five different soils amended with Cs and Sr to give concentrations of 1 mg kg(-1) and 50 mg kg(-1) of each element. Soil-plant transfer coefficients ranged between 0.12-19.10 (Cs) and 1.48-146.10 (Sr) for lettuce and 0.09-13.24 (Cs) and 2.99-93.00 (Sr) for radish. Uptake of Cs and Sr by plants depended on both plant and soil properties. There were significant (P less than or equal to 0.05) differences between soil-plant transfer factors for each plant type at the two soil concentrations. At each soil concentration about 60% of the variance in the uptake of the Cs and Sr was due to soil properties. For a given concentration of Cs or Sr in soil, the most important factor effecting soil-plant transfer of these elements was the soil properties rather than the crops or varieties of crops. Therefore, for the varieties considered here, soil-plant transfer of Cs and Sr would be best regulated through the management of soil properties. At each concentration of Cs and Sr, the main soil properties effecting the uptake of Cs and Sr by lettuce and radish were the concentrations of K and Ca, pH and CEC. Together with the concentrations of contaminants in soils, they explained about 80% of total data variance, and were the best predictors for soil-plant transfer. The different varieties of lettuce and radish gave different responses in soil-plant transfer of Cs and Sr in different soil conditions, i.e. genotype x environment interaction caused about 30% of the variability in the uptake of Cs and Sr by plants. This means that a plant variety with a low soil-plant transfer of Cs and Sr in one soil could have an increased soil-plant transfer factor in other soils. The broad implications of this work are that in contaminated agricultural lands still used for plant growing, contaminant-excluding crop varieties may not be a reliable method for decreasing contaminant transfer to foodstuffs. Modification of soil properties would be a more reliable technique. This is particularly relevant to agricultural soils in the former USSR still affected by fallout from the Chernobyl disaster.

(40)Ar/(39)Ar ages and Sr-Nd-Pb-Os geochemistry of CAMP tholeiites from Western Maranhao basin (NE Brazil)

The Central Atlantic Magmatic Province (CAMP), emplaced at the Triassic-Jurassic (T-J) boundary (-200 Ma), is among the largest igneous provinces on Earth. The Maranhao basin in NE Brazil is located around 700 km inland and 2000 km from the site of the earliest Pangea disruption. The CAMP tholeiites occur only in the western part of the basin and have been described as low and high-Ti. Here we document the occurrence of two sub-groups among the high-Ti tholeiites in the Western Maranhao basin. The major and trace elements and the Sr-Nd-Pb isotopic ratios define three chemical groups corresponding to the low-Ti (TiO(2)< 1.3 wt.%), high-Ti (TiO(2)-2.0 wt.%) and evolved high-Ti (TiO(2 >)3 wt.%) western Maranhao basin tholeiites (WMBT). The new (40)Ar/(39)Ar plateau ages obtained on plagioclase separates for high-Ti (199.7 +/- 2.4 Ma) and evolved high-Ti WMBT (197.2 +/- 0.5 Ma and 198.2 +/- 0.6 Ma) are indistinguishable and identical to those of previously analyzed low-Ti WMBT (198.5 +/- 0.8 Ma) and to the mean (40)Ar/(39)Ar age of the CAMP (199 +/- 2.4 Ma). We also present the first Re-Os isotopic data for CAMP basalts. The low and high-Ti samples display mantle-like initial ((187)Os/(188)Os)(i) ranging from 0.1267 to 0.1299, while the evolved high-Ti samples are more radiogenic (((187)Os/ (188)Os)(i) up to 0.184) We propose that the high-Ti WMBT were derived from the sub-lithospheric asthenosphere, and contaminated during ascent by interaction with the subcontinental lithospheric mantle (SCLM). The evolved high-Ti WMBT were derived from the same asthenospheric source but experienced crustal contamination. The chemical characteristics of the low-Ti group can be explained by partial melting of the most fertile portions of the SCLM metasomatized during paleo-subduction. Alternatively, the low-Ti WMBT could be derived from the sub-lithospheric asthenosphere but the resulting melts may have undergone contamination by the SCLM. The occurrences of high-Ti basalts are apparently not restricted to the area of initial continental disruption which may bring into question previous interpretations such as those relating high-Ti CAMP magmatism to the initiation of Atlantic ridge spreading or as the expression of a deep mantle plume. We propose that the CAMP magmatism in the Maranhao basin may be attributed to local hotter mantle conditions due to the combined effects of edge-driven convection and large-scale mantle warming under the Pangea supercontinent. The involvement of a mantle-plume with asthenosphere-like isotopic characteristics cannot be ruled out either as one of the main source components of the WMBT or as a heat supplier. (C) 2010 Elsevier BM. All rights reserved.

Temperature Dependence of the Intergranular Critical Current Density in Uniaxially Pressed Bi(1.65)Pb(0.35)Sr(2)Ca(2)Cu(3)O(10+delta) Samples

We have studied the normal and superconducting transport properties of Bi(1.65)Pb(0.35)Sr(2)Ca(2)Cu(3)O(10+delta) (Bi-2223) ceramic samples. Four samples, from the same batch, were prepared by the solid-state reaction method and pressed uniaxially at different compacting pressures, ranging from 90 to 250 MPa before the last heat treatment. From the temperature dependence of the electrical resistivity, combined with current conduction models for cuprates, we were able to separate contributions arising from both the grain misalignment and microstructural defects. The behavior of the critical current density as a function of temperature at zero applied magnetic field, J (c) (T), was fitted to the relationship J (c) (T)ae(1-T/T (c) ) (n) , with na parts per thousand 2 in all samples. We have also investigated the behavior of the product J (c) rho (sr) , where rho (sr) is the specific resistance of the grain-boundary. The results were interpreted by considering the relation between these parameters and the grain-boundary angle, theta, with increasing the uniaxial compacting pressure. We have found that the above type of mechanical deformation improves the alignment of the grains. Consequently the samples exhibit an enhance in the intergranular properties, resulting in a decrease of the specific resistance of the grain-boundary and an increase in the critical current density.

Evaluation of trace element levels in muscles, liver and gonad of fish species from Sao Francisco River of the Parana Brazilian state by using SR-TXRF technique

This study is focused on the analysis of an accumulation of inorganic elements in muscles, liver and gonad of seven fish species from Sao Francisco River located in the Parana state of Brazil. Concentrations of the elements were determined using the SR-TXRF technique. In the muscles of fish species, negative length dependent relationships were observed for chromium and zinc ion absorption. The obtained results showed that accumulated Cr ions values are above the limits defined in the Brazilian legislative norm on food. (C) 2010 Elsevier Ltd All rights reserved.

Water quality assessment of Toledo River and determination of metal concentrations by using SR-TXRF technique

The region of Toledo River, Parana, Brazil is characterized by intense anthropogenic activities. Hence, metal concentrations and physical-chemical parameters of Toledo River water were determined in order to complete an environmental evaluation catalog. Samples were collected monthly during one year period at seven different sites from the source down the river mouth, physical-chemical variables were analyzed, and major metallic ions were measured. Metal analysis was performed by using the synchrotron radiation total reflection X-ray fluorescence technique. A statistical analysis was applied to evaluate the reliability of experimental data. The analysis of obtained results have shown that a strong correlation between physical-chemical parameters existed among sites 1 and 7, suggesting that organic pollutants were mainly responsible for decreasing the Toledo River water quality.