Search results for "E7"
showing 10 items of 152 documents
Immunohistochemical detection of EWS and FLI-1 proteinss in Ewing sarcoma and primitive neuroectodermal tumors: comparative analysis with CD99 (MIC-2…
2001
The molecular analysis of the t(11;22) rearrangement involving EWS/FLI-1 genes is likely to be of diagnostic value in Ewing sarcoma (ES) and primitive neuroectodermal tumors (PNET). The objective of the current study was to analyze the immunohistochemical expression of the EWS and FLI-1 proteins in a group of small round-cell tumors (SRCT) to determine their specificity and relevance in their differential diagnosis. Forty-eight cases-10 conventional ES, 4 large-cell ES, 5 PNET, 9 neuroblastomas (NB), 6 undifferentiated synovial sarcomas (SS), 5 rhabdomyosarcomas (RB), 5 non-Hodgkin lymphomas (NHL), 1 round-cell liposarcoma, and 3 mesenchymal chondrosarcomas-were analyzed. Immunocytochemistr…
Towards an environmental assessment model of palaeontological and archaeological heritage in the Autonomous Valencian Community without comparative t…
2019
The deficient management of the paleontological heritage through the environmental impact assessment procedures from the Valencian public administrations, linked mainly to the lack of competent technical means in the matter, results in an almost abandonment of it. On the contrary, the archaeological heritage has a series of perfectly structured tools that allow any possible impact on it regarding projects and actions subject to environmental impact assessment that can be detected and corrected. The damage that this situation creates results in the abandonment and almost absolute lack of protection of the palaeontological heritage in the Valencian Community. Despite how much has been written…
Improving geoconservation of the palaeontological heritage through a semiotic vision
2019
The panoply of reasons that may attract people to fossils, which result from the meaning they attribute to these palaeontological objects, may contribute to endangering of the integrity of the fossil record. Semiotics can be of great help to assist geoconservation actions, usually based only on expertise statements, and are of particular relevance in palaeontological heritage inventory, evaluation, conservation, valuation and monitoring procedures. This work argues that fossils can be envisaged as signs displaying different meanings among experts and non-specialists. Such meanings support the heritage contents and values attributable to any palaeontological object and are affected by the re…
Recesión: Schroeder, R. & Perejón, A. (eds.) 2006. Contributions to the geology of Spain in memory of Prof. Franz Lotze. Zeitschrift der Deutsche…
2021
Recientemente se ha publicado un número especial en Memoria del Prof. Franz Lotze (1903-1971), editado por los doctores Rolf Schroeder (Frankfurt am Main) y Antonio Perejón (Madrid), consta de 12 contribuciones sobre distintas cuestiones geológicas de la Península Ibérica, a las que se añanden una interesante panorámica del trabajo geológico de Lotze en España, elaborado por los editores, y un sentido prólogo del Prof. Jaime Truyols (Oviedo).
20 years at campus: heritage assessment update for Somosaguas fossil geosite (Pozuelo de Alarcón, Madrid)
2019
The palaeontological heritage evaluation of the Somosaguas fossil geosite has been revised on the basis of scientifi c and sociocultural criteria. By means of this study have been proposed four new criteria that arise from new scientifi c and social trends as well as technological advances. A temporal comparison has been established with previous evaluations obtained in the years 2000 and 2012. The results indicated an increase in the initial score of the geosite in each revision. Our study shows the relevance of palaeontological heritage evaluations as useful tools to improve fossil geosites management.
THE GARGANO TERRE ROSSE INSULAR FAUNAS: AN OVERVIEW
2010
After forty years from its discovery, the history of the field surveys and of the researches on the fossiliferous deposits on Gargano is briefly reported. The Gargano fauna belongs to the Abruzzo-Apulian Palaeobioprovince (including also Scontrone and Palena, Abruzzo). The fossil assemblage comprehends all the classes of terrestrial vertebrates: Reptilia, Amphibia, Aves and Mammalia. The faunal composition is unbalanced and presents the features of a typical insular endemic fauna. The bulk of the assemblage is composed of small mammals and birds. Based on literature, we report the most characteristic features, phylogenetic relationships, and evolutionary remarks on a list of mammals, focusi…
First xiphosuran traceway in the middle Muschelkalk facies (Middle Triassic) of the Catalan Basin (NE Iberian Peninsula)
2021
In the last decade, the first ichnoassamblages from the middle Muschelkalk facies (upper Anisian-middle Ladinian) of the Catalan Basin (NE Iberian Peninsula) have been discovered. Herein, the first xiphosuran trace fossils are described from the locality of Penya Rubí, a newly discovered ichnosite from the Catalan Basin. The finding opens a window into peri-Tethys ecosystems with coastal influence. The traceway is referred to the ichnogenus Kouphichnium, a locomotion trace attributed to xiphosurans. The traceway preserves telson grooves and different imprint morphologies from the various appendages. The traceway pattern and arrangement of the different traces suggest a crawling locomotion s…
Stranded jellyfish in the lowermost Cambrian (Corduban) of Spain
2021
Ninety discoid structures of big size occurring on a bedding plane of Nemakit-Daldynian to Tommotian sandstones (i.e. Corduban in the Spanish scale of Cambrian stages) from south-western Spain are described. Cross-cutting relationships between discoid structures and associated trace fossils, as well as evidence for penecontemporaneous deformation of sediment laminae below the discoids, permit to interprete these structures as impressions of ancient, soft-bodied marine organisms. Taphonomic, biometric, and morphological studies suggest that they are outer moulds of both sides, subumbrellar and exumbrellar, of ancient jellyfish of hydrozoan coelenterates, whose canals resemble the modern genu…
Palaeontological Heritage: protected vs. unprotected areas. The case of Clot de Galvany Municipal Natural Park and Elche reservoir surroundings
2019
Concerning palaeontological and geological heritage of a particular place, being or not being under legal protection influences its preservation. As two examples, cases of Clot de Galvany Municipal Natural Park and Elche reservoir surroundings are exposed. Developed by the Palaeontologic Museum of Elche, Project FOPALI assessment methodology has been applied.
Lower and Middle Cambrian brachiopods from the Iberian Chains and Sierra Morena (Spain)
2021
Brachiopods from the Lower and Middle Cambrian of the Iberian Chains and Sierra Morena are described. The following taxa occur in the Iberian Chains: "Lingulella" sp., Redlichella cf. bohemica (Barrande), Dictyonina radioplicata sp. n., Micromitra sp., Trematobolus simplex (Vogel), Trematobolus borobiensis sp. n. and Jamesella sp. The taxa "Lingulella" sp. and Sibiria? sp. are reported from the Lower Cambrian of Sierra Morena. Brachiopods constitute several distinct associations: the relatively shallow water Trematobolus assemblage near the Lower-Middle Cambrian boundary interval is followed by the deeper DictyoninaRedlichella assemblage. The alternation of these assemblages permit us to i…