23,799 research outputs found

    Medical education on fitness to drive : a survey of all UK medical schools

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    Aim: To identify the extent to which medical aspects of fitness to drive (FTD) are taught within UK medical schools. Methods: A survey of all 32 UK medical schools. In-depth interviews with a range of staff at two medical schools; telephone survey of 30 schools. Results: Two thirds of schools reported specific teaching on medical aspects of FTD but few covered it in any depth or in relation to specific medical conditions. Only one school taught FTD in relation to elderly medicine. FTD was an examination topic at only 12 schools. Conclusion: Teaching on FTD is inconsistent across UK medical schools. Many new doctors will graduate with limited knowledge of medical aspects of FTD

    A Compound model for the origin of Earth's water

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    One of the most important subjects of debate in the formation of the solar system is the origin of Earth's water. Comets have long been considered as the most likely source of the delivery of water to Earth. However, elemental and isotopic arguments suggest a very small contribution from these objects. Other sources have also been proposed, among which, local adsorption of water vapor onto dust grains in the primordial nebula and delivery through planetesimals and planetary embryos have become more prominent. However, no sole source of water provides a satisfactory explanation for Earth's water as a whole. In view of that, using numerical simulations, we have developed a compound model incorporating both the principal endogenous and exogenous theories, and investigating their implications for terrestrial planet formation and water-delivery. Comets are also considered in the final analysis, as it is likely that at least some of Earth's water has cometary origin. We analyze our results comparing two different water distribution models, and complement our study using D/H ratio, finding possible relative contributions from each source, focusing on planets formed in the habitable zone. We find that the compound model play an important role by showing more advantage in the amount and time of water-delivery in Earth-like planets.Comment: Accepted for publication in The Astrophysical Journa

    Expected and unexpected products of reactions of 2-hydrazinylbenzothiazole with 3-nitrobenzenesulfonyl chloride in different solvents

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    Acknowledgements We thank the EPSRC National Crystallography Service (University of Southampton) for the X-ray data collections. Funding information MVNdS and JLW thank CNPq (Brazil) for financial support.Peer reviewedPublisher PD

    Dispositivo indicador de troca de filtro para biogás (Embrapa Biogás TF-01)

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    bitstream/item/58044/1/CUsersPiazzonDocuments478.pdfProjeto/Plano de Ação: 02.07.06.007-0

    Mercado de produtos livres de agrotóxicos dos produtores agrícolas familiares de Cruz das Almas - BA participantes do Projeto de Quintais Agroflorestais (Quintalsan): primeiras impressões.

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    A importância em se ?mesclar? espécimes multiuso reside na ampliação das possibilidades de êxito comercial, ao mesmo tempo em que há diminuição no risco de perdas devido a variações de preços do mercado de determinados subprodutos. Os Sistemas Agroflorestais (SAFs) possuem vantagens inerentes à sustentabilidade como sistema produtivo, externadas pela utilização de recursos locais (reduzindo a dependência de insumos externos), contribuindo na redução dos custos produtivos e aumentando a geração local de trabalho e renda

    Quadratic Effective Action for QED in D=2,3 Dimensions

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    We calculate the effective action for Quantum Electrodynamics (QED) in D=2,3 dimensions at the quadratic approximation in the gauge fields. We analyse the analytic structure of the corresponding nonlocal boson propagators nonperturbatively in k/m. In two dimensions for any nonzero fermion mass, we end up with one massless pole for the gauge boson . We also calculate in D=2 the effective potential between two static charges separated by a distance L and find it to be a linearly increasing function of L in agreement with the bosonized theory (massive Sine-Gordon model). In three dimensions we find nonperturbatively in k/m one massive pole in the effective bosonic action leading to screening. Fitting the numerical results we derive a simple expression for the functional dependence of the boson mass upon the dimensionless parameter e^{2}/m .Comment: 10 pages, 2 figure
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