5 resultados para G?mez Jattin, Ra?l, 1945-1997

em Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco


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se ha realizado una producci??n cient??fica de la Praxiolog??a Motriz en el siglo XXI, a partir de los art??culos, libros, tesis, congresos y seminarios de ocho autores referencia, tanto a nivel estatal como mundial dentro de este ??mbito. El objetivo de esta producci??n cient??fica es determinar si todo lo que se ha recopilado y clasificado sobre estos autores pertenece al ??mbito de la Praxiolog??a motriz. La b??squeda de art??culos se ha realizado principalmente, mediante la base de datos Dialnet, mientras que la herramienta para la clasificaci??n y el dise??o de las tablas y cuadros se ha realizado con el sistema inform??tico Microsoft Excel??. Durante este periodo se han publicado un total de 60 art??culos cient??ficos, con un promedio de 7.5 art??culos por autor, cuatro art??culos al a??o y a raz??n de 8.5 art??culos por apartado. Estos datos indican que la producci??n cient??fica es pobre ya que tan solo tres autores son los que centran la mayor??a de publicaciones y tres los apartados con la mayor??a de textos. Se ha enfatizado la necesidad de tener facilidad para una informaci??n mayor sobre art??culos, seminarios y congresos para tener mayor volumen de art??culos dado que 43 son los art??culos que se han quedado sin clasificar.

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Background: In the present study we have assessed whether the Carpathian Mountains represent a genetic barrier in East Europe. Therefore, we have analyzed the mtDNA of 128 native individuals of Romania: 62 of them from the North of Romania, and 66 from South Romania. Results: We have analyzed their mtDNA variability in the context of other European and Near Eastern populations through multivariate analyses. The results show that regarding the mtDNA haplogroup and haplotype distributions the Romanian groups living outside the Carpathian range (South Romania) displayed some degree of genetic differentiation compared to those living within the Carpahian range (North Romania). Conclusion: The main differentiation between the mtDNA variability of the groups from North and South Romania can be attributed to the demographic movements from East to West (prehistoric or historic) that differently affected in these regions, suggesting that the Carpathian mountain range represents a weak genetic barrier in South-East Europe.

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The importance of the process of Neolithization for the genetic make-up of European populations has been hotly debated, with shifting hypotheses from a demic diffusion (DD) to a cultural diffusion (CD) model. In this regard, ancient DNA data from the Balkan Peninsula, which is an important source of information to assess the process of Neolithization in Europe, is however missing. In the present study we show genetic information on ancient populations of the South-East of Europe. We assessed mtDNA from ten sites from the current territory of Romania, spanning a time-period from the Early Neolithic to the Late Bronze Age. mtDNA data from Early Neolithic farmers of the Starcevo Cris culture in Romania (Carcea, Gura Baciului and Negrilesti sites), confirm their genetic relationship with those of the LBK culture (Linienbandkeramik Kultur) in Central Europe, and they show little genetic continuity with modern European populations. On the other hand, populations of the Middle-Late Neolithic (Boian, Zau and Gumelnita cultures), supposedly a second wave of Neolithic migration from Anatolia, had a much stronger effect on the genetic heritage of the European populations. In contrast, we find a smaller contribution of Late Bronze Age migrations to the genetic composition of Europeans. Based on these findings, we propose that permeation of mtDNA lineages from a second wave of Middle-Late Neolithic migration from North-West Anatolia into the Balkan Peninsula and Central Europe represent an important contribution to the genetic shift between Early and Late Neolithic populations in Europe, and consequently to the genetic make-up of modern European populations.