Trace anomalies and the ΔI=1/2\Delta I = 1/2 rule

Trace Anomaly Dominance in weak $K$-decays successfully reproduces the $\Delta I = {1\over 2}$ selection rule results, as observed in $K_S \to \pi\pi, K_L \to \pi\pi\pi, K_S \to \gamma\gamma$ and $K_L \to \pi^0 \gamma\gamma$.Comment: 10 pages, no figur

Ökobilanz von Rind-, Schweine- und Geflügelfleisch aus konventionellen, tierfreundlichen und biologischen Produktionssystemen

The study compared the environmental impacts of different production systems (conventional, increased animal welfare label and organic) for beef, pork and chicken meat at the farm gate using model farms based on Swiss real farm data. Results showed that feeding and feed production had a high influence, particularly for monogastric animals. Organic farming had lower mineral resource use and ecotoxicity due to the ban of mineral fertilisers and pesticides but had a lower productivity per area, which influenced several impact categories such as eutrophication and land use negatively when expressed per kg live weight. Fundamentally, most of the decisive parameters for the environmental impacts of a production system turned out to be generally valid for both conventional and organic production

Oekobilanz-Vergleich von intensivem und extensivem Rindfleischproduktionsverfahren: Fallstudie anhand zweier Fallbeispiele

The environmental impact of two contrasting beef production systems was determined by life cycle assessment (LCA). An extensive fattening system of Limousine x Simmental crossbred steers based on grass (EXT) was compared to an intensive fattening system of Simmental bulls (INT). The environmental impacts of EXT were similar or lower than those of INT. The largest differences were found in toxic effects on aquatic and terrestrial ecosystems. The amount and type of fertilizers used to produce the feed were the main source of difference between the systems. For all other environmental impacts however, there were no marked differences. It is concluded that the extensive use of grasslands for beef production has the potential to reduce the environmental impacts per kg of carcass

Lamonzie-Saint-Martin – Saint-Martin

Identifiant de l'opération archéologique : 025218 Date de l'opération : 2007 (SD) La chapelle Saint-Martin est un ancien chef-lieu paroissial situé aujourd’hui dans la commune de Lamonzie-Saint-Martin, en Bergeracois. Une opération ponctuelle de sauvetage a été mise en place sur le site à la suite de l’effondrement du sol lors de travaux. D’allure moderne, cette chapelle n’attire l’attention que par son implantation privilégiée au bord de la Dordogne, au milieu d’un cimetière encore en activi..

Using LCA data for agri-environmental policy analysis at sector level

In times of limited agricultural budgets, the cost-effectiveness of the policies becomes a major decision criterion for policy reforms. For comprehensively assessing the effects of an agrienvironmental policy environmental data has to be scaled up to sector level, taking into account uptake rates and transaction costs of the policies. This paper discusses the general suitability of LCA data to be upscaled and combined with economic sector models. We present an approach that is based on the representative farm-group model FARMIS and the Swiss Agricultural Life Cycle Assessments (SALCA). Exemplary results of the model for energy use are shown and most prominent issues in the context of this upscaling process are discussed. The paper argues that uptake-effect functions will not necessarily be linear. Furthermore, the combination of normative and positive datasets causes inconsistencies which need to be minimised. Finally, we argue differences between the life-cycle view and the economist’s perspective lead to difficulties in the interpretation of the results. Nevertheless, this approach may deliver plausible results and can supplement ecological site-specific studies in the evaluation of agri-environmental policies

Weakly-induced strong CP-violation

Weak interaction contributions to the strong theta parameter are revisited in the frame of a large-Nc Chiral Perturbation Theory. Focusing on the hadronic (eta,etaprime) \to pi pi amplitudes, we express these second-order corrections in terms of the CP-violating parameter in K \to pi pi decays to obtain Delta_w(theta) approx 10^{-17} at O(GF^2 epsilonprime).Comment: 11 pages, 1 figure. One reference and comments on electroweak corrections added. Version published in Physics Letters