Search results for "Erice"
showing 10 items of 25 documents
Improvement of lateral connectivity in a sector of River Hârtibaciu (Olt/Danube Basin)
2017
Abstract The Hârtibaciu River in the Alţâna area has a disturbed lateral connectivity owing to its lateral embankments, as a result of which fish communities in this river sector are negatively influenced. The method of obtaining the water supply for a new proposed wetland is by gravitation, and any excessive water supply to the wetland will be controled and directed to the Hârtibaciu River in a natural manner. A state-of-the-art man-made wetland should increase the quality of the habitat for local fish communities, especially for the Rhodeus sericeus population, which is a species of conservation interest.
Adaptation of gene loci to heterochromatin in the course of Drosophila evolution is associated with insulator proteins.
2020
AbstractPericentromeric heterochromatin is generally composed of repetitive DNA forming a transcriptionally repressive environment. Dozens of genes were embedded into pericentromeric heterochromatin during evolution of Drosophilidae lineage while retaining activity. However, factors that contribute to insusceptibility of gene loci to transcriptional silencing remain unknown. Here, we find that the promoter region of genes that can be embedded in both euchromatin and heterochromatin exhibits a conserved structure throughout the Drosophila phylogeny and carries motifs for binding of certain chromatin remodeling factors, including insulator proteins. Using ChIP-seq data, we demonstrate that ev…
The Global Boundary Stratotype Section and Point (GSSP) for the base of the Pliensbachian Stage (Lower Jurassic), Wine Haven, Yorkshire, UK
2006
14 pages; International audience; Following votes by the Pliensbachian Working Group, the Jurassic Subcommission and the International Commission on Stratigraphy, IUGS ratified the proposed Global Boundary Stratotype Section and Point (GSSP) for the base of the Pliensbachian Stage (Lower Jurassic) at the base of bed 73b in the Wine Haven section, Robin Hood's Bay, Yorkshire Coast, UK. This level contains the characteristic ammonite association Bifericeras donovani Dommergues and Meister and Apoderoceras sp. Complementary data include: a) Strontium-isotope stratigraphy, based on analysis of belemnites which yield a calcite 87Sr/86Sr ratio for the boundary level of 0.707425 and data supportin…
Archaeometric characterization of late Archaic ceramic from Erice (Sicily) aimed to provenance determination
2019
A set of 20 ceramic samples was autoptically selected from the numerous findings recovered from the stratigraphic excavations of the late Archaic city walls of Erice (western Sicily), in order to be analyzed with archaeometric techniques for provenance determination. The excavations were recently carried out as part of a research project funded by the Freie Universiat Berlin and the Fritz Thyssen Foundation. Specifically, the ceramic material consists of tableware with a painted geometric decoration of presumed local/regional production, as well as apparently imported black-glazed pottery. Both the categories can be traced back to a chronological period between the second half/last quarter …
Inediti servizi di cartagloria delle chiese ericine
2009
Tra Elimi e Greci. La ceramica di età arcaica dai contesti di fondazione della cinta muraria di Erice
2018
Questa monografia costituisce la sintesi dello studio effettuato dall'autrice sulle ceramiche di produzione locale e di importazione rinvenute durante le campagne di scavo realizzate negli anni 2010-2014 lungo la cinta muraria di Erice. Sono stati analizzati in modo approfondito, fornendone un catalogo dettagliato, i frammenti ceramici provenienti dagli strati di fondazione delle mura di età arcaica, studiati nell'ambito del loro contesto di scavo.
Benedetto Valenza e il crocifisso della chiesa dei Cappuccini di Erice
2011
Una delle ultime opere di Benedetto Valenza inserita nel catalogo dell'autore alla luce delle recenti acquisizioni storiografiche e comparazioni stilistiche
L'intervento nei centri storici: l'ANCSA e il caso Erice
2014
Il Convegno “Salvaguardia e risanamento dei centri storico-artistici”, svoltosi a Gubbio nel Settembre del 1960, offre l’occasione per fare un bilancio sulla situazione dei centri storici, sull’insufficienza normativa dei piani regolatori, sulla tecnica urbanistica e confrontare contemporaneamente le esperienze concrete di alcuni piani e il relativo approccio al tema dell’intervento nei centri storici. Il comitato promotore del Convegno di Gubbio, noto per avere prodotto la celebre Dichiarazione finale poi denominata “Carta di Gubbio”, si trasformerà l’anno successivo in Comitato permanente fondando a Gubbio l’Associazione nazionale centri storico-artistici (ANCSA). Appare significativo che…
Insulator proteins contribute to expression of gene loci repositioned into heterochromatin in the course ofDrosophilaevolution
2019
AbstractPericentric heterochromatin inDrosophilais generally composed of repetitive DNA forming a transcriptionally repressive environment. Nevertheless, dozens of genes were embedded into pericentric genome regions during evolution ofDrosophilidaelineage and retained functional activity. However, factors that contribute to “immunity” of these gene loci to transcriptional silencing remain unknown. Here, we investigated molecular evolution of the essentialMybandRanbp16genes. These protein-coding genes reside in euchromatic loci of chromosome X inD. melanogasterand related species, while in other studiedDrosophilaspecies, including evolutionary distant ones, they are located in genomic region…
Linker histone H1 is essential for Drosophila development, the establishment of pericentric heterochromatin, and a normal polytene chromosome structu…
2009
We generated mutant alleles of Drosophila melanogaster in which expression of the linker histone H1 can be down-regulated over a wide range by RNAi. When the H1 protein level is reduced to ∼20% of the level in wild-type larvae, lethality occurs in the late larval – pupal stages of development. Here we show that H1 has an important function in gene regulation within or near heterochromatin. It is a strong dominant suppressor of position effect variegation (PEV). Similar to other suppressors of PEV, H1 is simultaneously involved in both the repression of euchromatic genes brought to the vicinity of pericentric heterochromatin and the activation of heterochromatic genes that depend on their pe…