Search results for "197"
showing 10 items of 197 documents
The General Education Act of 1970, a law for the modernization of Spain
2021
El artículo pretende desarrollar aspectos que ayuden a una mejor comprensión de la Ley General de Educación de 1970, y para ello examina los factores que permiten hablar de una Ley para la modernización de España. En este sentido se ha considerado que el rasgo más definitorio de la Ley es su ambición modernizadora del sistema educativo; de ahí que se concrete el concepto «modernización» y se estudien los precedentes y los ejes modernizadores de la Ley. También se ha prestado atención al contexto socioeconómico y político que ayuda a entender mejor su aparición. Dada su importancia, el artículo se detiene en analizar los obstáculos y resistencias que dificultaron su génesis y su aplicación, …
NHC-Based Iron Sensitizers for DSSCs
2018
International audience; Nanostructured dye-sensitized solar cells (DSSCs) are promising photovoltaic devices because of their low cost and transparency. Ruthenium polypyridine complexes have long been considered as lead sensitizers for DSSCs, allowing them to reach up to 11% conversion efficiency. However, ruthenium suffers from serious drawbacks potentially limiting its widespread applicability, mainly related to its potential toxicity and scarcity. This has motivated continuous research efforts to develop valuable alternatives from cheap earth-abundant metals, and among them, iron is particularly attractive. Making iron complexes applicable in DSSCs is highly challenging due to an ultrafa…
Zvaigžņotā Debess: 2013, Vasara (220)
2013
Saturs: Pēdējā "Apollo" ekspedīcija uz Mēnesi ; Vissavienības Astronomijas un ģeodēzijas biedrības Latvijas nodaļa ; M.Gills. ESON – astronomijas popularizēšanas tīkls ; S.Kropa. Dvēsele Atakamas tuksnesī ; M.G. Īsumā: ESO Astro Camp Eiropas vidusskolēniem 2013.gada decembrī ; A.Alksnis. Atklāta vēl viena no Saulei vistuvākajām kaimiņzvaigznēm ; A.Alksnis. Tuvēja zvaigzne, kas ir izveidojusies jau drīz pēc Lielā Sprādziena ; A.Alksnis. Čeļabinskas superbolīds – simtgades notikums ; A.Alksnis. Nevis pārsteidzoša nova, bet gan kvazāra uzliesmojums ; I.Eglītis. Orius – Baldones observatorijā atklātais centaurs ; R.Misa. Denisa Tito Marsa iedvesmas fonds ; A.A. Īsumā: Ap zvaigzni Gleznotāja Bet…
Dimethyl 2,2′-[Carbonylbis(azanediyl)](2S,2′S)-bis[3-(4-hydroxyphenyl)propanoate]
2018
The thus‐far unknown ureic derivative dimethyl 2,2′‐[carbonylbis(azanediyl)](2S,2′S)‐ bis[3‐(4‐hydroxyphenyl)propanoate] has been efficiently synthesized by enantiospecific oxidative carbonylation of readily available L‐tyrosine methyl ester, using a very simple catalytic system (PdI2 in conjunction with KI) under relatively mild conditions (100 °C for 5 h in DME as the solvent and under 20 atm of a 4:1 mixture CO‐air).
Las detenciones de abril de 1971
2013
“Las detenciones de abril de 1971” es un articulo forma parte del catalogo “Memoria y vigencia de un compromiso. Universitarios contra la dictadura”, de la exposición celebrada del 13 de març a l'1 de setembre de 2013 en la Sales Estudi General i Acadèmia – La Nau. Material docente para Historia del Pais Valenciano y Estructura Politica de España y del Pais Valenciano en Sociologia y Ciencias politicas y de la Administracion
Una nova planta per als valencians. Possibilitats i límits per a l'organització política i administrativa del País Valencià dins la Constitució de 19…
2013
Aquest estudi vol fer reflexionar el lector sobre la importància de la planta administrativa de les nostres institucions. Més de trenta anys després d’haver recuperat una Generalitat i un règim local que en gran part en depén, és hora d’avaluar críticament com hem desplegat aquestes estructures. L’actual context de crisi, econòmica però també social i política, a més, obliga a plantejar propostes de reforma per a bastir un model més eficaç, funcional, pròxim i democràtic. Ací s’ofereix un ampli ventall d’idees orientades a una radical transformació de la planta institucional valenciana. Un debat essencial perquè en la qualitat de les nostres institucions i accions públiques ens juguem, dire…
Numerical Hydrodynamics and Magnetohydrodynamics in General Relativity.
2008
This article presents a comprehensive overview of numerical hydrodynamics and magneto-hydrodynamics (MHD) in general relativity. Some significant additions have been incorporated with respect to the previous two versions of this review (2000, 2003), most notably the coverage of general-relativistic MHD, a field in which remarkable activity and progress has occurred in the last few years. Correspondingly, the discussion of astrophysical simulations in general-relativistic hydrodynamics is enlarged to account for recent relevant advances, while those dealing with general-relativistic MHD are amply covered in this review for the first time. The basic outline of this article is nevertheless sim…
Out-of-plane emission of nuclear matter in Au+Au collisions between 100 and 800 AMeV
1997
We present new experimental results concerning the azimuthal distributions of proton-likes, light and intermediate mass fragments at midrapidity for Au(100-800 AMeV)+Au collisions measured with the FOPI phase-I detector at GSI in Darmstadt. The azimuthal distributions are investigated as a function of the collision centrality, the incident energy, the fragment charge and transverse momentum. The azimuthal anisotropy is maximum for impact parameters around 7 fm. Intermediate mass fragments present a stronger out-of-plane emission signal than light fragments and a saturation is reached for Z greater than or equal to 4. The azimuthal anisotropy increases with the fragment transverse momentum a…
Numerical Hydrodynamics in General Relativity
2003
The current status of numerical solutions for the equations of ideal general relativistic hydrodynamics is reviewed. With respect to an earlier version of the article the present update provides additional information on numerical schemes and extends the discussion of astrophysical simulations in general relativistic hydrodynamics. Different formulations of the equations are presented, with special mention of conservative and hyperbolic formulations well-adapted to advanced numerical methods. A large sample of available numerical schemes is discussed, paying particular attention to solution procedures based on schemes exploiting the characteristic structure of the equations through lineariz…
Numerical Hydrodynamics in Special Relativity
2003
This review is concerned with a discussion of numerical methods for the solution of the equations of special relativistic hydrodynamics (SRHD). Particular emphasis is put on a comprehensive review of the application of high-resolution shock-capturing methods in SRHD. Results obtained with different numerical SRHD methods are compared, and two astrophysical applications of SRHD flows are discussed. An evaluation of the various numerical methods is given and future developments are analyzed.