8 results on '"García Antón, M."'
Search Results
2. Variabilidad de los conjuntos líticos en el Paleolítico Medio del Abric Romaní (Capellades, Barcelona)
- Author
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Vaquero, Manuel, Chacón, Gema, García-Antón, M. Dolores, and Gómez de Soler, Bruno
- Subjects
Variabilitat tècnica ,Technical variability ,Remontajes ,Resolució temporal ,Variabilité technique ,Temporal resolution ,Remuntatges ,Remontages ,Resolución temporal ,Résolution temporaire ,Abric Romaní ,Variabilidad técnica ,Refittings - Abstract
L’Abric Romaní compta amb una potent seqüència del Paleolític Mitjà de qual, fins al moment, s’han excavat 13 nivells arqueològics. Aquests nivells mostren un patró d’ocupació basat en l’aparició d’espais domèstics entorn a fogars en els quals es concentren la major part de les activitats, especialment les relacionades amb el processament dels recursos lítics. Aquest patró permet caracteritzar l’Abric Romaní com un espai residencial, fet que és fonamental per entendre el registre arqueològic i el comportament tècnic. La variabilitat dels conjunts lítics s’ha tractat des d’una triple perspectiva, relacionada amb les diferents escales temporals a les quals és possible accedir a través de la metodologia arqueològica: la variabilitat que reflecteix processos de llarga duració i que s’expressa en els canvis que es produeixen al llarg de la seqüència; la variabilitat en l’interior del conjunt lític definit a partir de criteris estratigràfics; i la variabilitat accessible a través de contextos temporals d’alta resolució. Aquesta última aproximació a la variabilitat se centra en l’estudi dels diferents comportaments discernibles en un mateix nivell arqueològic. En aquest treball utilitzarem el nivell J com a exemple d’aquest tipus d’anàlisi., El Abric Romaní cuenta con una potente secuencia del Paleolítico Medio de la que hasta el momento se han excavado 13 niveles arqueológicos. Estos niveles muestran un patrón de ocupación basado en la aparición de espacios domésticos en torno a hogares en los que se concentra la mayor parte de las actividades, especialmente las relacionadas con el procesamiento de los recursos líticos. Este patrón permite caracterizar el Abric Romaní como un espacio residencial, lo que es fundamental para entender el registro arqueológico y el comportamiento técnico. La variabilidad de los conjuntos líticos se ha abordado desde una triple perspectiva, relacionada con las diferentes escalas temporales a las que es posible acceder a través de la metodología arqueológica: la variabilidad que refleja procesos de larga duración y que se expresa en los cambios que se producen a lo largo de la secuencia; la variabilidad en el interior de conjunto lítico definido a partir de criterios estratigráficos; y la variabilidad accesible a través de contextos temporales de alta resolución. Esta última aproximación a la variabilidad se centra en el estudio de los diferentes comportamientos discernibles en un mismo nivel arqueológico. En este trabajo utilizaremos el nivel J como ejemplo de este tipo de análisis., Abric Romani contains a thick Middle Palaeolithic sequence of which 13 archaeological levels have been excavated so far. Occupation patterns in these levels are organized in domestic spaces around hearths in which most of activities are concentrated, especially those concerning the management of lithic material. This pattern portrays Abric Romani as a residential space, and that is essential to understanding its archaeological record and technical behaviour. Variability of the lithic assemblages has been assessed according to three different temporal scales feasible of being investigated with archaeological methods; variability in long term scales, as shown by changes throughout the sequence; variability in lithic assemblages within a single stratigraphic level; and variability in high resolution temporal contexts. The latter is approached through the study of different behaviours detected within the same archaeological level. In this paper, level J will be used as a case study to tackle this type of analysis.
- Published
- 2008
3. Reconstrucción morfosedimentaria y fitogeográfica del tramo medio del río Jarama (Madrid, España) durante la segunda mitad del Holoceno. Estudio preliminar
- Author
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Alonso, A., Franco, F., García Antón, M., Garzón Heydt, Guillermina, Gómez Manzaneque, F., Morla, C., and Sánchez Hernando, L.J.
- Subjects
Geodinámica ,Holocene ,Fluvial reconstruction ,Sedimentology ,Phyteogrography - Abstract
[Abstract] Two sites located on the alluvial plain of the Jarama River, near Madrid, Spain, have been studied using geological, palynological and xylological techniques. Uniquely for this region, numerous wood subfossils of Alnus and Ulmus have been found together with an strobile of Pinus halepensis. This has allowed the stablishment of a coherent radiocarbon chronology, which demonstrates that these sedimentary environments began to develop during the mid Holocene. The dated sediments, which also contains appreciable amounts of pollen, have been deposited upon older palaeosols which has in turn developed directly on the geological substrate. Palynological analyses of these levels have provided valuable insights into the floristic composition of the communities associated with the different biotopes present in the area. As a result of these multiproxy analyses an interpretation of Holocene landscape history and vegetation dynamics is presented
- Published
- 1998
4. New data concerning the evolution of the vegetation in Lillo pinewood (Leon, Spain)
- Author
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García Antón, M., primary, Franco Múgica, F., additional, Maldonado, J., additional, Morla Juaristi, C., additional, and Sainz Ollero, H., additional
- Published
- 2003
- Full Text
- View/download PDF
5. New data concerning the evolution of the vegetation in Lillo pinewood (Leon, Spain).
- Author
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García Antón, M., Franco Múgica, F., Maldonado, J., Morla Juaristi, C., and Sainz Ollero, H.
- Published
- 1997
- Full Text
- View/download PDF
6. La Palinología y su aplicación al estudio de la reconstrucción de la vegetación durante el Cuaternario : consideraciones generales
- Author
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Ruiz Zapata, María Blanca and García Antón, M.
- Subjects
Palinology ,Cuaternary ,Methodology ,Palinología ,Cuaternario ,Metodología - Abstract
Se analiza la importancia del análisis polínico de los sedimentos de edad cuaternaria. Asimismo se plantea toda la problemática existente en la elaboración y tratamiento de los datos con vistas a la interpretación de carácter paleoclimático., In this paper are studied the problems existent from the point of view palynologic, in the analysis of sediments the Quaternary aqe, for his interpretation paleoclimaitc.
- Published
- 1987
7. Rare FOXC1 variants in congenital glaucoma: identification of translation regulatory sequences.
- Author
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Medina-Trillo C, Aroca-Aguilar JD, Méndez-Hernández CD, Morales L, García-Antón M, García-Feijoo J, and Escribano J
- Subjects
- Case-Control Studies, Child, Preschool, Female, Forkhead Transcription Factors metabolism, Glaucoma genetics, HEK293 Cells, Heterozygote, Homeodomain Proteins genetics, Humans, Infant, Male, Protein Stability, RNA, Messenger chemistry, RNA, Messenger genetics, RNA, Messenger metabolism, Transcription Factors genetics, Homeobox Protein PITX2, 5' Untranslated Regions, Forkhead Transcription Factors genetics, Glaucoma congenital, Polymorphism, Single Nucleotide
- Abstract
Primary congenital glaucoma (PCG) is the cause of a significant proportion of inherited visual loss in children, but the underlying mechanism is poorly understood. In this study, we assessed the relationship between PCG and FOXC1 variants by Sanger sequencing the proximal promoter and transcribed sequence of FOXC1 from a cohort of 133 PCG families with no known CYP1B1 or MYOC mutations. The pathogenicity of the identified variants was evaluated by functional analyses. Ten patients (7.5%) with no family history of glaucoma carried five different rare heterozygous FOXC1 variants with both increased (rs77888940:C>G, c.-429C>G, rs730882054:c.1134_144del(CGGCGGCGCGG), p.(G380Rfs*144) and rs35717904:A>T, c.*734A>T) and decreased (rs185790394: C>T, c.-244C>T and rs79691946:C>T, p.(P297S)) transactivation, ranging from 50 to 180% of the wild-type activity. The five variants did not show monogenic segregation, and four of them were absent in a control group (n=233). To the best of our knowledge, one of these variants (p.(G380Rfs*144)) has not previously been described. One of the FOXC1 variant carriers (p.(P297S)) also coinherited a functionally altered rare PITX2 heterozygous variant (rs6533526:C>T, c.*454C>T). Bioinformatics and functional analyses provided novel information on three of these variants. c.-429C>G potentially disrupts a consensus sequence for a terminal oligopyrimidine tract, whereas c.-244C>T may alter the RNA secondary structure in the 5'-untranslated region (UTR) that affects mRNA translation. In addition, p.(G380Rfs*144) led to increased protein stability. In summary, these data reveal the presence of translation regulatory sequences in the UTRs of FOXC1 and provide evidence for a possible role of rare FOXC1 variants as modifying factors of goniodysgenesis in PCG.
- Published
- 2016
- Full Text
- View/download PDF
8. The TD6 level lithic industry from Gran Dolina, Atapuerca (Burgos, Spain): production and use.
- Author
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Carbonell E, García-Antón MD, Mallol C, Mosquera M, Ollé A, Rodríguez XP, Sahnouni M, Sala R, and Vergès JM
- Subjects
- Animals, Biological Evolution, Calcium Carbonate, Crystallization, Fossils, Geology, History, Ancient, Human Activities, Humans, Spain, Archaeology, Hominidae, Quartz, Technology
- Abstract
Technological analysis of lithic artefacts recovered at the Aurora stratum of Atapuerca-TD6 shows that this Lower Pleistocene assemblage is similar to Mode I Technology (=Oldowan tradition) documented at many African sites. Diachronic comparison of the different levels of Gran Dolina allows us to conclude that this particular form of early European technology lacks the production of big flakes to manufacture large tools such as bifaces and cleavers. Rather, it is characterized by the presence of small artefacts, including flakes, denticulates, notches, and side-scrapers, many of which bear use-wear traces of butchery and woodworking. The dominant production technique is orthogonal, which is also reflected in the core recovered at the slightly older level of TD4. The raw materials also found in the Middle Pleistocene occupations at Atapuerca, though with significant proportion differences, have a local origin and include varieties of flint, quartzite and sandstone as well as limestone and quartz. TD6 small artefacts were made from most of these, although the retouched pieces seem to have been preferentially made of the best quality flint, i.e., Cretaceous flint, pointing to the existence of differential use of lithic material, and therefore, some degree of planned knapping behaviour. Most of the "chaînes opératoires" or reduction sequences took place inside the cave, although some artefacts, elaborated on Cretaceous flint, seem to have been retouched off site, possibly near the supply sources., (Copyright 1999 Academic Press.)
- Published
- 1999
- Full Text
- View/download PDF
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