Guía práctica para el desarrollo y dinamización de la biblioteca escolar en Secundaria.

Convocatoria de Premios Nacionales de Investigación Educativa 2005, tercer premio

Aspectos did??cticos de Lat??n. 4

Recoge las ponencias que se presentaron sobre aspectos did??cticos de lat??n en el 'IX Encuentro sobre Aspectos Did??cticos' organizado por el ICE de la Universidad de Zaragoza los d??as 8, 9 y 10 de septiembre de 1993. Dos eran los objetivos propuestos para este encuentro: la actualizaci??n cient??fica del profesorado y la presentaci??n de algunas experiencias y materiales preparados para atender las nuevas demandas que plantea la reforma del sistema educativo. Al primero responden dos ponencias, una de las cuales revisa algunos problemas metodol??gicos que plantea el estructuralismo y su aplicaci??n a la did??ctica del lat??n, la otra presenta un amplio recorrido por las literaturas latina y espa??ola sobre el t??pico del carpe diem, aportando una amplia selecci??n de textos. Otras tres ponencias pretenden cumplir el segundo objetivo. En la primera se expone un dise??o de 'Cultura Cl??sica', materia optativa de oferta obligatoria en la ESO, la segunda es una unidad did??ctica titulada 'Zaragoza, ciudad romana' y en la ??ltima el Grupo Tempe de Madrid present?? los materiales que ha preparado para los dos cursos de lat??n del Bachillerato.

Geograf??a de ??frica

NIPO: 176-89-033-X. La unidad recibi?? el premio de programas de ordenador de 1988

Formulaci??n qu??mica

NIPO: 176-89-033-X. El proyecto de la unidad obtuvo el premio de programas de ordenador de 1988

Bibliotecas escolares : premios 2011

Contiene premios: En la modalidad A el primer premio se otorg?? a CEIP A Lama, de A Lama (Pontevedra). Segundos premios otorgados a CEIP Francisco Vald??s, de Don Benito (Badajoz), CEIP Condesa de Fenosa, de O Barco de Valdeorras (Ourense), CEIP Andaluc??a, de Sevilla, CEIP Antonio Machado, de Alcobendas (Madrid), y a CP Badies, de Badia Gran-Llucmajor (Illes Balears). Terceros premios otorgados a CEIP Cervantes, de Santa Cruz de Mudela (Ciudad Real), CEIP Juan Caro Romero, de Melilla, CRA de Ribadumia, de Ribadumia (Pontevedra), CEIP Cervantes, de C??ceres, CEP Xos?? Mar??a Brea Segade, de Tarago??a (A Coru??a), CEE La Ginesta, de Barcelona y a CEE Arboleda, de Teruel. En la modalidad B el primer premio se otorg?? a IES Jer??nimo Gonz??lez, de Langreo (Asturias). Los segundos premios se otorgaron a IES Juan de Herrera, de San Lorenzo del Escorial (Madrid), IES El Brocense, de C??ceresy a IES S??nchez Lastra, de Mieres (Asturias). Los terceros premios se otorgaron a IES San Leonardo, de San Leonardo de Yag??e (Soria), IES de Celanova, de Celanova (Ourense), IES Rusadir, de Melilla, IES Alexandre B??veda, de Vigo (Pontevedra), IES Nuestra Se??ora de Los Remedios, de Ubrique (C??diz), IES Selgas, de El Pito-Cudillero (Asturias) y a IES Carre??o Miranda, de Avil??s (Asturias). En la modalidad C se otorg?? a Colegio Manuel Bartolom?? Coss??o, de Fuenlabrada (Madrid). El segundo premio a Colegio La Salle, de Figueres (Girona) y el tercer premio a Escola P??a d???Olot, de Olot (Girona).

Universidad y Escuela : compartiendo conclusiones y orientando las pr??cticas en el aula : 2013-2014

Pagina web del congreso, con acceso a los materiales presentados al mismo en las distintas secciones: Conferencias y Mesas redondas

Estudio y valoraci??n de un modelo did??ctico intertextual literario-musical : una investigaci??n en la Regi??n de Murcia

Resumen basado en el de la publicaci??n

El cuento musical : an??lisis de sus componentes textuales, musicales e ilustrados para el desarrollo de las competencias b??sicas en Educaci??n Primaria

Resumen basado en el de la publicaci??n

Hacer bien lo que nos compete : la evaluaci??n docente. Una breve aproximaci??n inicial desde la inspecci??n de educaci??n

Resumen tomado de la publicaci??n

Systematic studies on 3d-3d and 3d-4f multimetallic complexes with interesting magnetic and/or luminescent properties

324 p.

Mineral and geochemical characterization of a leptic aluandic soil and a thapto aluandic-ferralsol developed on trachytes in Mount Bambouto (Cameroon volcanic line)

Mineral and geochemical investigations were carried out on soil samples and fresh rock (trachytes) from two selected soil profiles (TM profile on leptic aluandic soils and TL profile on thapto aluandic-ferralsols) from Mount Bambouto to better understand geochemical processes and mineral paragenesis involved in the development of soils in this environment. In TM profile, the hydrated halloysites and goethite occur in the weathered saprolite boulders of BC horizon while dehydrated halloysite, gibbsite and goethite dominate the soils matrices of BC and A horizons. In TL profile, the dehydrated halloysites and goethite are the most abundant secondary minerals in the weathered saprolites of C and BC horizons while gibbsite, hematite and kaolinite occur in the soil matrices of BC, B and A horizons. The highest gibbsite content is in the platy nodules of B horizon. In both soil profiles, organo-metal complexes (most likely of AI and Fe) are present in the surface A horizon. Geochemically, between the fresh rock and the weathered saprolites in both soils, SiO2, K2O, CaO, Na2O and MgO contents decrease strongly while Fe2O3 and Al2O3 tend to accumulate. The molar ratio of SiO2/Al2O3 (Ki) and the sum of Ca, Mg, K and Na ions (TRB) also decreases abruptly between fresh rocks and the weathered saprolites, but increases significantly at the soil surface. The TM profile shows intense Al enrichment whereas the TL profile highlights enrichment in both AI and Fe as the weathering progresses upwards. Both soil profiles are enriched in Ni, Cu, Ba and Co and depleted in U, Th, Ta, Hf, Y, Sr, Pb, Zr and Zn relative to fresh rock. They also show a relatively low fractionation of the rare earth elements (REE: La, Nd, Sm, Eu, Tb, Yb and Lu), except for Ce which tends to be enriched in soils compared to CI chondrite. All these results give evidence of intense hydrolysis at soil deep in Mount Bambouto resulting in the formation of halloysite which progressively transforms into gibbsite and/or dehydrated halloysite. At the soil surface, the prominent pedogenetic process refers to andosolization with formation of organo-metal complexes. In TL profile, the presence of kaolinite in soil matrices BC and B horizons is consistent with ferralitization at soil deep. In conclusion, soil forming processes in Mount Bambouto are strongly influenced by local climate: (i) in the upper mountain (>2000 m), the fresh, misty and humid climate favors andosolization; whereas (ii) in the middle lands (1700-2000 m) with a relatively dry climate, both andosolization at the soil surface and ferralitization at soil deep act together. (C) 2009 Elsevier B.V. All rights reserved.

Wind turbine blade pitch control system

The present invention provides an improvement for a wind turbine (20) having at least one blade (21) mounted on a hub (22) for controlled rotation about a blade axis (yb-yb) to vary the pitch of the blade relative to an airstream. The hub is mounted on a nacelle (23) for rotation about a hub axis (xh-xh). The wind turbine includes a main pitch control system for selectively controlling the pitch of the blade, and/or a safety pitch control system for overriding the main blade pitch control system and for causing the blade to move toward a feathered position in the event of an overspeed or fault condition. The improvement includes: an energy storage device (26) mounted on the nacelle and associated with the blade; a pitch-axis controller (25) mounted on the nacelle and associated with the blade and with the energy storage device; an electro-mechanical actuator (28) mounted on the hub and associated with the blade; and at least one slip ring (29) operatively arranged to transmit power and/or data signals between the pitch-axis controller and the electro-mechanical actuator; whereby the mass on the rotating hub may be reduced.

Structural studies of lanthanide complexes with tetradentate nitrogen ligands

Complexes have been synthesised with bis(2-pyridine carboxaldehyde) ethylenediimine (1) and bis(2-pyridine carboxaldehyde)propylene-1,3-diimine (2) with all of the available lanthanide trinitrates. Crystal structures were obtained for all but one complex with 1 and for all but one complex with 2. Four distinct structural types were established for 1 but only two for 2, although in all cases the structures contained one ligand bound to the metal in a tetradentate fashion. With 1, the four different structures of the lanthanide(III) nitrate complexes included 11-coordinate [Ln(1)(NO3)(3)(H2O)] for Ln = La; 10 coordinate [Ln(1)(NO3)(3)(H2O)] with one monodentate and two bidentate nitrates for Ln = Ce, then 10-coordinate [Ln(1)(NO3)(3)] for Ln = Pr-Yb with three bidentate nitrates; and 9-coordinate [Ln(1)(NO3)(3)] with one monodentate and two bidentate nitrates for Ln = Lu. On the other hand for 2 only two distinct types of structure are obtained, the first type with Ln = La-Pr and the second type for Ln = Sm-Lu, although all are 10-coordinate with stoichiometry [Ln(2)(NO3)(3)]. The difference between the two types is in the disposition of the ligand relative to the nitrates. With the larger lanthanides La-Pr the ligand is found on one side of the coordination sphere with the three nitrate anions on the other. In these structures, the ligand is folded such that the angle between the two pyridine rings approaches 90degrees, while with the smaller lanthanides Sm-Lu, two nitrates are found on one side of the ligand and one nitrate on the other and the ligand is in an extended conformation such that the two pyridine rings are close to being coplanar. In both series of structures, the Ln-N and Ln-O bond lengths were consistent with the lanthanide contraction though there are significant variations between ostensibly equivalent bonds which are indicative of intramolecular hydrogen bonding and steric crowding in the complexes. (C) 2004 Elsevier B.V. All rights reserved.

Solvent extraction and lanthanide complexation studies with new terdentate ligands containing two 1,3,5-triazine moieties

The extracting agent 2,6-bis(4,6-di-pivaloylamino-1,3,5-triazin-2-yl)-pyridine (L-5) in n-octanol was found, in synergy with 2-bromodecanoic acid, to give D-Am/D-Eu separation factors (SFs) between 2.4 and 3.7 when used to extract the metal ions from 0.02-0.12 M HNO3. Slightly higher SFs (4-6) were obtained in the absence of the synergist when the ligand was used to extract Am(III) and Eu(III) from 0.98 M HNO3. In order to investigate the possible nature of the extracted species crystal structures of L-5 and the complex formed between Yb(III) with 2,6-bis(4,6-di-amino-1,3,5-triazin-2-yl)-pyridine (L-4) were also determined. The structure of L-5 shows 3 methanol solvent molecules all of which form 2 or 3 hydrogen bonds with triazine nitrogen atoms, amide nitrogen or oxygen atoms, or pyridine nitrogen atoms. However, L-5 is relatively unstable in metal complexation reactions and loses amide groups to form the parent tetramine L-4. The crystal structure of Yb(L-4)(NO3)(3) shows ytterbium in a 9-coordinate environment being bonded to three donor atoms of the ligand and three bidentate nitrate ions. The solvent extraction properties of L-4 and L-5 are far inferior to those found for the 2,6-bis-(1,2,4-triazin-3-yl)-pyridines (L-1) which have SF values of ca. 140 and theoretical calculations have been made to compare the electronic properties of the ligands. The electronic charge distribution in L-4 and L-5 is similar to that found in other terdentate ligands such as terpyridine which have equally poor extraction properties and suggests that the unique properties of L-1 evolve from the presence of two adjacent nitrogen atoms in the triazine rings.

Complexes formed between the quadridentate, heterocyclic molecules 6,6 '-bis-(5,6-dialkyl-1,2,4-triazin-3-yl)-2,2 '-bipyridine (BTBP) and lanthanides(III): implications for the partitioning of actinides(III) and lanthanides(III)

New hydrophobic, tetradentate nitrogen heterocyclic reagents, 6.6'-bis-(5,6-dialkyl- 1,2,4-triazin-3-yl)2,2'-bipyridines (BTBPs) have been synthesised. These reagents form complexes with lanthanides and crystal structures with 11 different lanthanides have been determined. The majority of the structures show the lanthanide to be 10-coordinate with stoichiometry [Ln(BTBP)(NO3)(3)] although Yb and Lu are 9-coordinate in complexes with stoichiometry [Ln(BTBP)(NO3)(2)(H2O)](NO3). In these complexes the BTBP ligands are tetradentate and planar with donor nitrogens mutually cis i.e. in the cis, cis, cis conformation. Crystal structures of two free molecules, namely C2-BTBP and CyMe4-BTBP have also been determined and show different conformations described as cis, trans, cis and trans, trans, trans respectively. A NMR titration between lanthanum nitrate and C5-BTBP showed that two different complexes are to be found in solution, namely [La(C5-BTBP)(2)](3+) and [La(C5-BTBP)(NO3)(3)]. The BTBPs dissolved in octanol were able to extract Am(III) and Eu(III) from 1 M nitric acid with large separation factors.