Dos miradas sobre la mujer etrusca

This paper studies two concrete aspects of the role of women in Etruria in the VIth century BC: on the one part, her situation in society and family, and on the other, the possibilities that women had, within the previous context, of choosing their outward appearance and clothing. These questions will be analyzed using classical texts, inscriptions, and above all, Etruscan art of the Archaic Period

Cleopatra o Ariadna: retorno a un debate superado

The iconography of the Hellenistic statue called Sleeping Ariadne, known throw several Roman copies, has been interpreted in various ways from the Renaissance till today. We shall re-examine this set of problems in the context of the ideological evolution.La iconografía de la escultura helenística llamada Ariadna dormida, conocida por varias copias romanas, ha dado lugar a diversas interpretaciones desde el Renacimiento hasta hoy. Deseamos repasar esta problemática insertándola en la evolución de las mentalidades

El alejandrismo

Tesis Univ. Comp. de Madrid.Depto. de Prehistoria, Historia Antigua y ArqueologíaFac. de Geografía e HistoriaTRUEProQuestpu

Sistema innovativo de iluminación natural y ventilación pasiva de bajo costo : Caracterización lumínica

Se presenta el diseño de un sistema de acondicionamiento térmico-lumínico pasivo, desarrollado con el objetivo de transportar luz natural al interior de espacios profundos (hasta 5 metros), al tiempo que permite la ventilación de estos ambientes. El dispositivo consiste en un núcleo aluminizado contenido dentro de un cilindro de ventilación. El sistema se diseño basado en el uso exclusivo de tecnologías y materiales disponibles en la provincia de Mendoza, previendo que el medio industrial pueda asimilar la transferencia sin inversión de capital extraordinario. Se analizaron comparativamente los costos de producción y el rendimiento lumínico respecto de otros productos disponibles en el mercado.We present the design of a termal-lighting conditioning system, developed with the objective of transporting natural light into deep spaces (up to 5 meters), while allowing the ventilation of these environments. The device consists in a aluminizated core contained into a ventilation cylinder. The system was designed based on the exclusive use of technologies and materials available in the province of Mendoza, with the idea that the industrial environment can assimilate the transfer without a extraordinary capital investment. We analyzed the production costs (AR$) and the light output (lm) compared to other similar products on the market.Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES

Sistema innovativo de iluminación natural y ventilación pasiva de bajo costo : Caracterización lumínica

Se presenta el diseño de un sistema de acondicionamiento térmico-lumínico pasivo, desarrollado con el objetivo de transportar luz natural al interior de espacios profundos (hasta 5 metros), al tiempo que permite la ventilación de estos ambientes. El dispositivo consiste en un núcleo aluminizado contenido dentro de un cilindro de ventilación. El sistema se diseño basado en el uso exclusivo de tecnologías y materiales disponibles en la provincia de Mendoza, previendo que el medio industrial pueda asimilar la transferencia sin inversión de capital extraordinario. Se analizaron comparativamente los costos de producción y el rendimiento lumínico respecto de otros productos disponibles en el mercado.We present the design of a termal-lighting conditioning system, developed with the objective of transporting natural light into deep spaces (up to 5 meters), while allowing the ventilation of these environments. The device consists in a aluminizated core contained into a ventilation cylinder. The system was designed based on the exclusive use of technologies and materials available in the province of Mendoza, with the idea that the industrial environment can assimilate the transfer without a extraordinary capital investment. We analyzed the production costs (AR$) and the light output (lm) compared to other similar products on the market.Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES

Are diversification rates and chromosome evolution in the temperate grasses (Pooideae) associated with major environmental changes in the Oligocene-Miocene?

The Pooideae are a highly diverse C3 grass subfamily that includes some of the most economically important crops, nested within the highly speciose core-pooid clade. Here, we build and explore the phylogeny of the Pooideae within a temporal framework, assessing its patterns of diversification and its chromosomal evolutionary changes in the light of past environmental transformations. We sequenced five plastid DNA loci, two coding (ndhF, matk) and three non-coding (trnH-psbA, trnT-L and trnL-F), in 163 Poaceae taxa, including representatives for all subfamilies of the grasses and all but four ingroup Pooideae tribes. Parsimony and Bayesian phylogenetic analyses were conducted and divergence times were inferred in BEAST using a relaxed molecular clock. Diversification rates were assessed using the MEDUSA approach, and chromosome evolution was analyzed using the chromEvol software. Diversification of the Pooideae started in the Late-Eocene and was especially intense during the Oligocene-Miocene. The background diversification rate increased significantly at the time of the origin of the Poodae + Triticodae clade. This shift in diversification occurred in a context of falling temperatures that potentially increased ecological opportunities for grasses adapted to open areas around the world. The base haploid chromosome number n = 7 has remained stable throughout the phylogenetic history of the core pooids and we found no link between chromosome transitions and major diversification events in the Pooideae.España, Ministerio de Ciencia y Tecnología CGL2006-00319, CGL2009-12955-C02-0

Precipitaciones intensas en las zonas del este y del sureste peninsulares (Dic-2016 y Mar-2017)

En el área mediterránea se dan a menudo episodios de precipitaciones intensas. Hemos elegido dos episodios de este tipo en el este y sureste de la Península para estudiarlos en detalle en este capítulo, uno en torno al 18 de diciembre de 2016 (examinado desde otros puntos de vista en el capítulo 50 en la página 827 de este volumen) y el otro centrado en el 13 de marzo de 2017. En ambos se registraron precipitaciones muy fuertes, incluso torrenciales. Analizamos el comportamiento de los sistemas de predicción del Centro Europeo de Predicción a Medio Plazo (ECMWF, cap. 19 en la página 315), tanto el modelo de alta resolución ECHRES (sec. 19.2 en la página 317) como el sistema de predicción por conjuntos ECENS (sec. 19.3 en la página 319)

Fenton degradation of sulfanilamide in the presence of Al,Fe-pillared clay: Catalytic behavior and identification of the intermediates

[EN]Liquid phase catalytic degradation of sulfanilamide with H2O2 was carried out in the presence of Fe,Al/M-pillared clay (Fe,Al/M-MM, M = Na+, Ca2+ and Ba2+) as heterogeneous Fenton type catalyst. Fe,Al/M-MMs were prepared by swelling of layered aluminosilicate (90–95 wt.% montmorillonite) from a bed located in Mukhortala (Buryatia, Russia) in Na+, Ca2+ and Ba2+ forms by means of the exchange of these cations with bulky Fe,Al-polyoxocations prepared at Al/Fe = 10/1 and OH/(Al + Fe) = 2.0, and then calcinated at 500 °C. XRD method and chemical analysis demonstrated that the rate of crystalline swelling was dependent on the interlayer cations and decreased in the order: Fe,Al-/Na-MM > Fe,Al/Ca-MM > Fe,Al/Ba-MM. It was found that the catalytic properties of Fe,Al/M-MMs depended on the type of exchangeable cations. The effect of the H2O2/sulfanilamide molar ratio, the catalyst content, the reaction temperature and the reaction pH on the removal rate of sulfanilamide has been studied in the presence of Fe,Al/Na-MM. The catalyst can be applied for degradation of sulfanilamide with H2O2 for at least three successive cycles without loss of activity. HPLC analyses pointed out that the main degradation intermediate products were sulfanilic acid, benzenesulfonic acid, p-benzoquinone and aliphatic carboxylic acids

Characterization of the response to zinc deficiency in the cyanobacterium Anabaena sp. strain PCC 7120

Zur regulators control zinc homeostasis by repressing target genes under zinc-sufficient conditions in a wide variety of bacteria. This paper describes how part of a survey of duplicated genes led to the identification of the open reading frame all2473 as the gene encoding the Zur regulator of the cyanobacterium Anabaena sp. strain PCC 7120. All2473 binds to DNA in a zinc-dependent manner, and its DNA-binding sequence was characterized, which allowed us to determine the relative contribution of particular nucleotides to Zur binding. A zur mutant was found to be impaired in the regulation of zinc homeostasis, showing sensitivity to elevated concentrations of zinc but not other metals. In an effort to characterize the Zur regulon in Anabaena, 23 genes containing upstream putative Zur-binding sequences were identified and found to be regulated by Zur. These genes are organized in six single transcriptional units and six operons, some of them containing multiple Zur-regulated promoters. The identities of genes of the Zur regulon indicate that Anabaena adapts to conditions of zinc deficiency by replacing zinc metalloproteins with paralogues that fulfill the same function but presumably with a lower zinc demand, and with inducing putative metallochaperones and membrane transport systems likely being involved in the scavenging of extracellular zinc, including plasma membrane ABC transport systems and outer membrane TonB-dependent receptors. Among the Zur-regulated genes, the ones showing the highest induction level encode proteins of the outer membrane, suggesting a primary role for components of this cell compartment in the capture of zinc cations from the extracellular medium.Ministerio de Ciencia e Innovación y Fondo Social Europeo BFU2007-66589/BMC BFU2010-19544Junta de Andalucía y FEDER P07-CVI-0316