170,038 research outputs found

    Economics of spatial coexistence of genetically modified and conventional crops: Oilseed rape in Central France

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    Europe is currently struggling to implement coherent coexistence regulations on genetically modified (GM) and non-GM crops in all EU Member States. We conduct simulations with the software ArcView® on a GIS dataset of a hypothetical case of GM herbicide tolerant oilseed rape cultivation in Central France. Our findings show that rigid coexistence rules, such as large distance requirements, may impose a severe burden on GM crop production in Europe. These rules are not proportional to the farmers’ basic incentives for coexistence and hence not consistent with the objectives of the European Commission. More alarming, we show that in densely planted areas a domino-effect may occur. This effect raises coexistence costs and even adds to the non-proportionality of rigid coexistence regulations. Instead, we show that flexible measures would be preferable since they are proportional to the incentives for coexistence and, hence, less counterproductive for European agriculture.regulation, GIS modelling, domino-effect, Crop Production/Industries,

    5. Amouretti (M. C), Ruze (F.). Le monde grec antique

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    Demont Paul. 5. Amouretti (M. C), Ruze (F.). Le monde grec antique. In: Revue des Études Grecques, tome 93, fascicule 440-441, Janvier-juin 1980. pp. 262-263

    2. Mainoldi (C), L'image du loup et du chien dans la Grèce ancienne d'Homère à Platon.

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    Demont Paul. 2. Mainoldi (C), L'image du loup et du chien dans la Grèce ancienne d'Homère à Platon.. In: Revue des Études Grecques, tome 98, fascicule 467-469, Juillet-décembre 1985. pp. 403-404

    30. Demosthenes, Selected Private Speeches, edited by C. Carey and R. A. Reid

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    Demont Paul. 30. Demosthenes, Selected Private Speeches, edited by C. Carey and R. A. Reid. In: Revue des Études Grecques, tome 100, fascicule 475-476, Janvier-juin 1987. pp. 170-171

    17. Hippocrate, Tome XII, 4e partie. Femmes stériles, Maladies des jeunes filles, Superfétation, Excision du foetus, Texte établi, traduit et annoté par F. Bourbon, «C. U. F. » , Paris, Les Belles Lettres, 2017

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    Demont Paul. 17. Hippocrate, Tome XII, 4e partie. Femmes stériles, Maladies des jeunes filles, Superfétation, Excision du foetus, Texte établi, traduit et annoté par F. Bourbon, «C. U. F. » , Paris, Les Belles Lettres, 2017. In: Revue des Études Grecques, tome 131, fascicule 2, Juillet-décembre 2018. pp. 788-792

    Equilibrium mechanical properties of two noncollagenous cartilages in the sea lamprey, Petromyzon marinus

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    In contrast to all other vertebrate cartilages, the major extracellular matrix protein of lamprey cartilage is not collagen. Instead, the majority of cartilaginous elements in the lamprey (e.g., cranial and annular cartilages) contain a noncollagenous protein (lamprin) with sequence similarities to mammalian and avian elastins. The branchial and pericardial cartilages also possess noncollagenous, elastin-like extracellular matrix proteins, but these demonstrate different amino acid compositions from lamprin. Thus, lamprey possess a unique family of noncollagenous structural proteins, the significance of which is not completely understood. The purpose of this study was to quantify the equilibrium mechanical properties of adult lamprey annular and pericardial cartilages in order to relate them to age, morphology, and biochemistry. A custom-built uniaxial testing apparatus was used to quantify the equilibrium stress-relaxation behavior of pericardial cartilages tested in tension and annular cartilages tested in compression. Stress-relaxation data and cartilage specimen dimensions were used in the calculation of moduli (stiffnesses) and Poisson's ratios. In addition, light and electron microscopy were used to characterize cartilage morphology before and after testing. (Abstract shortened by UMI.).Source: Masters Abstracts International, Volume: 40-03, page: 0719.Advisers: Glenda Wright; Edwin DeMont

    Are EU spatial ex ante coexistence regulations proportional?

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    The EU is currently struggling to implement coherent coexistence regulations on genetically modified (GM) and non-GM crops in all member states. While it stresses that any approach needs to be “proportionate to the aim of achieving coexistence”, very few studies have actually attempted to assess whether the proposed spatial ex ante coexistence regulations (SEACERs) satisfy this proportionality condition. In this article, we define proportionality as a functional relationship which is weakly increasing in the incentives for coexistence. We propose a spatial framework based on an existing landscape and introduce the new concept of shadow factor as a measure for the opportunity costs induced by SEACERs. This enables comparing the proportionality of (i) rigid SEACERs which are based on large isolation distances imposed on GM farmers versus (ii) flexible SEACERs based on pollen barrier agreements between neighboring farmers. Our theoretical and empirical findings argue for flexibility as rigid SEACERs violate the proportionality condition and, hence, are not consistent with the objectives of the EU.policy analysis, GIS, shadow factor, Agricultural and Food Policy, Crop Production/Industries,

    The Global Welfare Effects of GM Sugar Beet under Changing Sugar Policies

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    Since most of the recent agricultural biotechnology innovations have been developed by private companies, the central focus of societal interest is on the distribution of the gains from these technologies among all stakeholders. In a partial equilibrium model, assuming perfect corporate pricing strategies given the heterogeneous population of potential adopters, we model the worldwide introduction of GM sugar beet. The introduction is modelled under both the old and new CMO for sugar in the EU. We see GM sugar beet could bring great benefits to both consumers in the world and sugar beet producers even when the innovation is protected by intellectual property rights and the innovator uses his restricted monopoly to the full extend.GM, sugar beet, partial equilibrium, Agricultural and Food Policy, Crop Production/Industries,

    AMČR - projekt C-201706277

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    Stav: 6Podnět: kNN demont vNNOznačení projektu: ÚAPPSČ 1502/201

    AMČR - projekt C-200914370

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    Stav: 6Podnět: Kabel 1 kV a demont. nízké napětí pro čp. 64 a 44.Označení projektu: 3-78/08 K
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