43 research outputs found

    Early farmers from across Europe directly descended from Neolithic Aegeans

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    Farming and sedentism first appeared in southwestern Asia during the early Holocene and later spread to neighboring regions, including Europe, along multiple dispersal routes. Conspicuous uncertainties remain about the relative roles of migration, cultural diffusion, and admixture with local foragers in the early Neolithization of Europe. Here we present paleogenomic data for five Neolithic individuals from northern Greece and northwestern Turkey spanning the time and region of the earliest spread of farming into Europe. We use a novel approach to recalibrate raw reads and call genotypes from ancient DNA and observe striking genetic similarity both among Aegean early farmers and with those from across Europe. Our study demonstrates a direct genetic link between Mediterranean and Central European early farmers and those of Greece and Anatolia, extending the European Neolithic migratory chain all the way back to southwestern Asia

    Budding Yeast Dma Proteins Control Septin Dynamics and the Spindle Position Checkpoint by Promoting the Recruitment of the Elm1 Kinase to the Bud Neck

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    The first step towards cytokinesis in budding yeast is the assembly of a septin ring at the future site of bud emergence. Integrity of this ring is crucial for cytokinesis, proper spindle positioning, and the spindle position checkpoint (SPOC). This checkpoint delays mitotic exit and cytokinesis as long as the anaphase spindle does not properly align with the division axis. SPOC signalling requires the Kin4 protein kinase and the Kin4-regulating Elm1 kinase, which also controls septin dynamics. Here, we show that the two redundant ubiquitin-ligases Dma1 and Dma2 control septin dynamics and the SPOC by promoting the efficient recruitment of Elm1 to the bud neck. Indeed, dma1 dma2 mutant cells show reduced levels of Elm1 at the bud neck and Elm1-dependent activation of Kin4. Artificial recruitment of Elm1 to the bud neck of the same cells is sufficient to re-establish a normal septin ring, proper spindle positioning, and a proficient SPOC response in dma1 dma2 cells. Altogether, our data indicate that septin dynamics and SPOC function are intimately linked and support the idea that integrity of the bud neck is crucial for SPOC signalling

    A Kinase-Phosphatase Network that Regulates Kinetochore-Microtubule Attachments and the SAC

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    Estimates of Mortality and Morbidity from the UW-Eau Claire Coal-Fired Heating Plant

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    Color poster with text, images, diagrams, graphs, and charts.In the United States today, coal provides a substantial fuel source utilized to power our society. About 52 percent of the energy produced in the United States arises from combustion of coal (usgs.gov). The power sector alone accounts for 90 percent of coal consumption (eia.doe.gov). Although coal is relatively inexpensive, it bears costs in the arenas of both environmental and public health. The coal-fired power plant at the University of Wisconsin-Eau Claire is one of many power plants in the nation that contribute annually to emissions associated with coal combustion. As of February 2010, the Wisconsin Sierra Club sued the Department of Natural Resources, claiming the agency failed to provide requested records on several state-owned coal plants in regard to compliance with the Clean Air Act. The University of Wisconsin-Eau Claire was one of the plants thatrecords were requested and this study was designed to determine potential health risks associated with the plant. In order to do so, both environmental impacts from coal extraction and transport were investigated, as well as the human health impacts associated with combustion of coal.University of Wisconsin--Eau Claire Office of Reseach and Sponsored Program

    79 GHz UWB automotive short range radar – Spectrum allocation and technology trends

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    Automotive UWB (Ultra-Wideband) short range radar (SSR) is on the market as a key technology for novel comfort and safety systems. SiGe based 79 GHz UWB SRR will be a definite candidate for the long term substitution of the 24 GHz UWB SRR. This paper will give an overview of the finished BMBF joint project KOKON and the recently started successing project RoCC, which concentrate on the development of this technology and sensor demonstrators. In both projects, the responsibilities of Daimler AG deal with application based sensor specification, test and evaluation of realized sensor demonstrators. Recent UWB SRR frequency regulation approaches and activitites will be introduced. Furthermore, some first results of Daimler activities within RoCC will be presented, dealing with the packaging and operation of these sensors within the complex car environment
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