2,613 research outputs found
Placas de marfil etruscas en la Península Ibérica
In this article we study some figured ivory plates found in a votive deposit in the iberian cemetery of Los Villares in Albacete. The iconografy of the plates with banquet scenes, and the technic employed, identified this plates as elements manufactured in etruscan centers in the finaly of the VI century B.C.En el presente artículo estudiamos algunas placas de marfil figuradas de procedencia etrusca, aparecidas en un deposito votivo de la necrópolis ibérica de Los Villares en Albacete. Tanto la iconografía de las placas, con escenas de banquete, como la técnica empleada las identifican como elementos fabricados en centros etruscos a finales del s. VI a.C
Reseña de Moralejo Álvarez, Remedios...[et al.]; Coordinador, Francisco Alía Miranda. Del texto al hipertexto: las bibliotecas universitarias ante el reto de la digitalización. Cuenca: Ediciones de la Universidad Castilla-La Mancha, 2004. 192 p
Book review of: Moralejo Álvarez, Remedios...[et al.]; Coordinador, Francisco Alía Miranda. Del texto al hipertexto: las bibliotecas universitarias ante el reto de la digitalización. Cuenca: Ediciones de la Universidad Castilla-La Mancha, 2004. 192 p
Choes y Anthesteria: nuevos ejemplares en la Península Ibérica
In the context of the Greek Vases importations to the Iberian Peninsula, there is a special important finding of the three Red-Figure choes with childish representations of the Iberic Necropolis in Hoya Gonzalo (Albacete), during the last years of the fifth century. Inside the abundant production of the Attic enochoes there exportation is very rare, not only in the Iberic Peninsula, where only the ones proceding from Ullastret are known, as also in other mediterranean countrys including Italy. This are small vases related to the Anthesteria, with ilustrations of games and other childrens activities. They also had a funeral use, as is indicated by the frequent finding in children's graves of the period. The presence of these exceptional pieces in a funerary context of the interior of Iberic Península, once again brings up the question of the means and utility of the greek vases importations and the posibility of a secundary comerce.Entre las importaciones de cerámica griega a la Península Ibérica cobra especial importancia el hallazgo de los tres choes de Figuras Rojas con representaciones infantiles de la necrópolis ibérica de Hoya Gonzalo (Albacete). Dentro de la muy abundante producción de enócoes áticos, son muy escasas las exportaciones de este tipo, no sólo en la Península Ibérica, donde es conocido únicamente uno procedente de Ullastret, sino también en otros países mediterráneos, incluyendo la propia Italia. Se trata de pequeñas jarras relacionadas con los festivales de Anthesteria y cuyas representaciones ilustran juegos y diversas actividades de los niños. También tuvieron un uso funerario tal y como indican los frecuentes hallazgos en enterramientos infantiles. La presencia de estas piezas excepcionales en un contexto funerario del interior de la Península Ibérica plantea, de nuevo, la debatida cuestión de la utilidad y significado de las importaciones cerámicas griegas y de su posible llegada como elemento de un comercio secundario
Construcciones de opus quadratum en Córdoba
The object of this work is to value the importance of certains buildings of the province and city of Cordoba in the use and diffusion of the technics of roman construction in the Betica province. In concret, the opus quadratum, scasly represented in other hispanorroman cities had a full use in Cordoba, so much in republican, as in imperial time. Like this, we could considere the presence of this technic like a way to give prestige to the city chosen as the Betic capital. They also made in opus quadratum the bridges of Villa del Río y Los Pedroches, that can be considered as fundamental elements in the roads of comunication of the Cordoba city with other important places.El presente artículo tiene como objetivo resaltar la importancia de determinados edificios de la provincia y de la ciudad de Córdoba, como jalones en la utilización y difusión de técnicas de construcción romanas en la Provincia Bética. En concreto el opus quadratum, escasamente representado en otras ciudades Hispanorromanas, tiene una abundante utilización en esta ciudad, tanto en época republicana como imperial. Así, podemos considerar la presencia de esta técnica como un modo de prestigiar la ciudad, elegida como capital de la Bética. También se realizaron en opus quadratum los puentes de Villa del Río y Los Pedroches, que pueden ser considerados como elementos fundamentales en las vías de comunicación de la ciudad de Córdoba con otros importantes núcleos urbanos
Structural characterization of highly glucosylated crocins and regulation of their biosynthesis during flower development in Crocus
Crocin biosynthesis in Crocus has been proposed to proceed through a zeaxanthin cleavage pathway catalyzed by carotenoid cleavage dioxygenase 2 (CCD2), and followed by glucosylation reactions catalyzed by CsGT2 (UGT74AD1). In Crocus ancyrensis flowers, crocins with eight (crocin-1), seven (crocin-2), and six glucose (crocin-3) moieties accumulated both in stigma and tepals. We have characterized the structure of these highly glucosylated crocins and follow up their accumulation by high-resolution liquid chromatography coupled with diode array detector along the development of both tissues, and coupled to the isolation and analysis of the expression of eighteen genes (PSY-I, PSY-II, PDS-(I-V), ISO-ZDS, ZDS, CtrISO, LYC-I and II, BCH, CaCCD2, UGT74AD2-5) related with the apocarotenoid metabolism in C. ancyrensis tepals and stigmas. Structure elucidation of crocin-1 and crocin-2 was done by the combined use of 1D and 2D [H, H] (gCOSY and TOCSY and ROESY) and [H-C] NMR experiments, revealing that for crocin-1 was all-trans-crocetin O-[β-D- Glucopyranosyl)-(1→4)-(β-D-glucopyranosyl)-(1→2)]-O-[β-D-glucopyranosyl-(1→6)]-β-D-glucopyranosyl diester, while crocin-2 showed an identical structure except for the absence of one glucose residue in one end of the molecule. Crocins accumulation was not synchronically regulated in stigma and tepals, although in both cases crocins accumulation parallels tissue development, decreasing at anthesis. The expression of the carotenogenic genes PSY, ZDS-V, BCH, and LCY-II was correlated with crocins accumulation. In addition, CaCCD2 and only one of the four glucosyltransferase encoding genes, UGT74AD2, were highly expressed, and the expression was correlated with high levels of crocins accumulation in stigma and tepals.This work was supported by the Spanish Ministerio de Economía y Competitividad (BIO2013-44239-R) and participates in the IBERCAROT network (112RT0445). OA was funded by FPCYTCLM through the INCRECYT Programme.Peer Reviewe
Hongos Micorrícicos Arbusculares y su potencial uso como Agentes Biorremediadores en suelos con elevado contenido de metales pesados
Hongos Micorrícicos Arbusculares y su potencial uso como Agentes
Biorremediadores en suelos con elevado contenido de metales pesadosFil: Gómez, Elena. Universidad Nacional de Rosario. Facultad de Ciencias Agrarias; Argentin
Cloning and characterization of a glucosyltransferase from Crocus sativus stigmas involved in flavonoid glucosylation
Saffron is a monomorphic species as revealed by RAPD, ISSR and microsatellite analyses
<p>Abstract</p> <p>Background</p> <p>Saffron (<it>Crocus sativus</it>) is considered the world's most expensive spice. Used mainly as a colorant for foodstuffs, it is highly appreciated for its aromatic and flavouring properties. Since no molecular markers for this species have been found in the literature, the objective of this study was to determine whether phenotypical differences found in <it>C. sativus </it>were supported by molecular analyses.</p> <p>Findings</p> <p>Thirty primers from Operon Technologies were used in random amplified polymorphic DNA (RAPD) analysis, forty eight primers were screened using intersimple sequence repeats (ISSR) method and fifteen primers derived from a microsatellites library flanking sequences with repeat motifs were assayed in forty three isolates of <it>C. sativus </it>from eleven different countries and a <it>C. kotschyanus </it>isolate was used as outgroup. No polymorphic bands were detected in any of the accessions combining the different approaches used in this study.</p> <p>Conclusion</p> <p>According to our findings, all accessions appear identical clones, not only because morphological characters but also at a molecular level. These data strongly suggested that <it>C. sativus </it>is a monomorphic species. Thus, genome sequencing is needed to find molecular markers for saffron.</p
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