54 research outputs found

    Tuc d’Audoubert, grotte

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    Le siteAppartenant au réseau des cavernes du Volp, la grotte du Tuc d’Audoubert a été découverte par les trois fils du comte Bégouën, les 20 juillet et 10 octobre 1912 (fig. 1a). Longue de 640 m, elle se développe sur trois niveaux (fig. 1b) : réseau inférieur, où s’écoule le cours souterrain actif du Volp ; le réseau médian, qui contient les vestiges d’une occupation magdalénienne ; et le réseau supérieur, 12 m plus haut, qui s’étend sur 450 m d’un parcours parfois difficile. Le site archéo..

    Enlène et Les Trois-Frères, grottes

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    Le siteLes grottes d’Enlène et des Trois-Frères forment, avec la caverne du Tuc d’Audoubert, l’ensemble des cavernes du Volp, situé sur le territoire de la commune de Montesquieu-Avantès (Ariège), dans le piémont pyrénéen (fig. 1a). Elles recèlent toutes les trois d’importants vestiges archéologiques appartenant pour l’essentiel au Paléolithique récent et notamment au Magdalénien, époque durant laquelle leurs nombreuses galeries furent entièrement visitées.Enlène est le type même de la grott..

    Site formation and chronology of the new Paleolithic site Sima de Las Palomas de Teba, southern Spain

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    The newly identified Paleolithic site Sima de Las Palomas de Teba hosts an almost seven -m-thick sediment profile investigated here to elucidate the rock shelter's chronostratigraphy and formation processes. At its base, the sediment sequence contains rich archeological deposits recording intensive occupation by Neanderthals. Luminescence provides a terminus ante quem of 39.4 ± 2.6 ka or 44.9 ± 4.1 ka (OSL) and 51.4 ± 8.4 ka (TL). This occupation ended with a rockfall event followed by accumulation of archeologically sterile sediments. These were covered by sediments containing few Middle Paleolithic artifacts, which either indicate ephemeral occupation by Neanderthals or reworking as suggested by micromorphological features. Above this unit, scattered lithic artifacts of undiagnostic character may represent undefined Paleolithic occupations. Sediment burialagesbetweenabout23.0±1.5ka(OSL)and40.5±3.4ka(pIRIR)provideanUpperPaleolithicchronology for sediments deposited above the rockfall. Finally, a dung-bearing Holocene layer in the upper most part of the sequence contains a fragment of a human mandible dated to 4032 ± 39 14C yr BP. Overall, the sequence represents an important new site for studying the end of Neanderthal occupation in southern Spain

    Respiration-based investigation of adsorbent-bioprocess compatibility

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    Background: The efficiency of downstream processes plays a crucial role in the transition from conventional petrochemical processes to sustainable biotechnological production routes. One promising candidate for product separation from fermentations with low energy demand and high selectivity is the adsorption of the target product on hydrophobic adsorbents. However, only limited knowledge exists about the interaction of these adsorbents and the bioprocess. The bioprocess could possibly be harmed by the release of inhibitory components from the adsorbent surface. Another possibility is co-adsorption of essential nutrients, especially in an in situ application, making these nutrients unavailable to the applied microorganism. Results: A test protocol investigating adsorbent-bioprocess compatibility was designed and applied on a variety of adsorbents. Inhibitor release and nutrient adsorption was studied in an isolated manner. Respiratory data recorded by a RAMOS device was used to assess the influence of the adsorbents on the cultivation in three different microbial systems for up to six different adsorbents per system. While no inhibitor release was detected in our investigations, adsorption of different essential nutrients was observed. Conclusion: The application of adsorption for product recovery from the bioprocess was proven to be generally possible, but nutrient adsorption has to be assessed for each application individually. To account for nutrient adsorption, adsorptive product separation should only be applied after sufficient microbial growth. Moreover, concentrations of co-adsorbed nutrients need to be increased to compensate nutrient loss. The presented protocol enables an investigation of adsorbent-bioprocess compatibility with high-throughput and limited effort

    Analysis of web server hosting

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    Tato diplomová práce se zabývá problematikou hostování webových stránek v České republice. Cílem práce je navrhnout postup a na jeho základě realizovat aplikaci pro automatizované určení, zda je konkrétní web provozován na serveru třetí strany nebo na vlastním serveru organizace či jednotlivce. Práce je rozdělena na tři hlavní části, kde první, teoretická část pojednává o principech, protokolech a službách, které jsou potřebné pro zajištění dostupnosti webových stránek s přihlédnutím na specifika prostředí českého internetu. V další, praktické části, je na základě získaných teoretických znalostí navrženo několik přístupů k analýze získaných dat. Na jejich základě je navržen a formou detekční aplikace implementován algoritmus, jehož cílem je určit, zda jsou předložené vstupní webové stránky umístěné na sdíleném serveru a pro každou z nich shromáždit informace o jejím hostování. V poslední části práce je aplikace spuštěna na vytvořené databázi webových stránek dle kategorií subjektů provozující tyto weby. V této, analytické části, jsou výstupní získané informace o hostování těchto webů zpracovány a prezentovány spolu s uvedením příslušných souvislostí týkajících se hostování webů v České Republice.Master thesis deals with the problematics of webpages hosting in the Czech Republic. The goal of the thesis is to design a procedure and to implement an application for automated determination of whether a particular website is operated on a third party server or an own server of the organization or the individual. The thesis is divided into two main parts. The first part of the thesis lays a theoretical base concerning principals, protocols and services which are necessary for providing availability of the webpages with special attention to the specifics of the Czech internet environment. In the practical part there are several approaches to the analysis of the obtained data proposed. On that basis there is designed and in the form of the detection application implemented an algorithm which goal is to determine whether the submitted webpages are placed on a shared server and to collect the information about their hosting. In the last part of the thesis the application runs based on the created database of webservers organized by the categories of the webserver operators. In this analytic part the obtained output information about these webservers hosting are processed and presented together with the relevant context concerning the hosting of these webpages in the Czech Republic.

    Pohon Kearifan

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    Cultural contact over the Strait of Gibraltar during the Middle Palaeolithic? Evaluating the visibility of cultural exchange

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    Possible contacts between hunter-gatherers of Northern Africa and Europe via the Strait of Gibraltar during the Pleistocene are still object to discussions. In the absence of significant fossil remains, debates are mainly based on similarities and differences of singular aspects of material culture. However, a theoretical framework for these discussions was lacking. The first aim of this study thus has been the development of a theoretical base. We therein included Maslow´s pyramid of basic needs. The idea of our approach is that the presence or absence of so-called cultural tracers identify either contact or disparity. A large database on archaeological sites of Morocco and Southern Iberia dating between 160 ka and 40 ka years ago has been compiled, containing information about lithic technology and typology, lithic raw material acquisition, subsistence patterns and symbolic behaviour. We formulated three potential contact scenarios between the two regions. The presence and/or absence of so-called cultural tracers within the data set, that covered all levels of Maslow´s pyramid, led us to conclude that – based on the present archaeological and anthropological data - no contact took place between Iberian and North African populations across the Strait of Gibraltar in the given time frame

    Djara – Cave Art in Egypt’s Western Desert

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    Claßen Erich, Kindermann Karin, Pastoors Andreas. Djara – Cave Art in Egypt’s Western Desert. In: Archéo-Nil. Revue de la société pour l'étude des cultures prépharaoniques de la vallée du Nil, n°19, 2009. L’art rupestre de la vallée du Nil et des déserts égyptiens. pp. 47-66
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