71 research outputs found

    Mapping Cumulative Environmental Risks: Examples from The EU NoMiracle Project

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    We present examples of cumulative chemical risk mapping methods developed within the NoMiracle project. The different examples illustrate the application of the concentration addition (CA) approach to pesticides at different scale, the integration in space of cumulative risks to individual organisms under the CA assumption, and two techniques to (1) integrate risks using data-driven, parametric statistical methods, and (2) cluster together areas with similar occurrence of different risk factors, respectively. The examples are used to discuss some general issues, particularly on the conventional nature of cumulative risk maps, and may provide some suggestions for the practice of cumulative risk mapping

    Proteolytic enzyme engineering : a tool for wool

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    One of the goals of protein engineering is to tailor the structure of enzymes to optimize industrial bioprocesses. In the present work, we present the construction of a novel high molecular weight subtilisin, based on the fusion of the DNA sequences coding for Bacillus subtilis prosubtilisin E and for an elastin-like polymer (ELP). The resulting fusion protein was biologically produced in Escherichia coli, purified and used for wool finishing assays. When compared to the commercial protease Esperase, the recombinant subtilisinE-VPAVG220 activity was restricted to the cuticle of wool, allowing a significant reduction of pilling, weight loss and tensile strength loss of wool fibers. Here we report, for the first time, the microbial production of a functionalized high molecular weight protease for controlled enzymatic hydrolysis of wool surface. This original process overcomes the unrestrained diffusion and extended fiber damage which are the major obstacles for the use of proteases for wool finishing applications

    Grey Box and Component Models to Forecast Ozone Episodes: A Comparison Study

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    Truncated levy flights and agenda-based mobility are useful for the assessment of personal human exposure

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    Contains fulltext : 92520.pdf (publisher's version ) (Closed access)10 p

    Stochastic Models

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    Receptor-oriented approaches in wildlife and human exposure modelling: A comparative study

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    Contains fulltext : 84128.pdf (publisher's version ) (Closed access)14 p
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