298 research outputs found

    Avaliação da Conservação de Couve Minimamente Processada pela Medida do Tempo de Relaxação Transversal da RMN.

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    bitstream/CNPDIA/10448/1/CiT22_2004.pd

    Global health learning outcomes for pharmacy students in the UK

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    Context : The pharmacy world is a highly globalised environment. Pharmacy graduates must therefore be adequately prepared. The question for educators is, how best to prepare our students. We propose that integrating global health learning outcomes within the core curriculum would ensure that all students – irrespective of their personal interest and intended work sector - are engaged with global issues. / Description: Internal discussions were held with representatives from all disciplines within University College London (UCL) School of Pharmacy and existing curriculum documents were reviewed. A draft set of learning outcomes was proposed and then revised following consultation with representatives from the United Kingdom (UK) pharmacy profession and others with an interest in global health. / Evaluation: Analysis of the consultation data led to the derivation of a revised set of global health learning outcomes for pharmacy. / Future plan: Embedding and assessing global health learning outcomes within the UCL School of Pharmacy’s undergraduate curriculum is now our focus

    The Global Pharmacist

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    Globalisation can facilitate improvements in health through the speed and ease of shared information, advances in health care delivery and health policy, and the enhanced pace of discovery through international research collaborations. However, there are associated potential risks to health such as the spread of communicable diseases and antibiotic-resistance. Current international priorities in the development, supply and use of medicines reflect the influence of globalisation. This is relevant to all aspects of contemporary pharmacy, and means that graduates are increasingly working in a globalised profession

    Medida Rápida e Simultânea dos Tempos de Relaxação Longitudinal e Transversal por RMN-CWFP.

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    bitstream/CNPDIA/10475/1/CT66_2005.pd

    Gap modification of atomically thin boron nitride by phonon mediated interactions

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    A theory is presented for the modification of bandgaps in atomically thin boron nitride (BN) by attractive interactions mediated through phonons in a polarizable substrate, or in the BN plane. Gap equations are solved, and gap enhancements are found to range up to 70% for dimensionless electron-phonon coupling \lambda=1, indicating that a proportion of the measured BN bandgap may have a phonon origin

    Community exposure and vulnerability to water quality and availability: a case study in the mining-affected Pazña Municipality, Lake Poopó Basin, Bolivian Altiplano

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    This is the final version of the article. Available from Springer Verlag via the DOI in this record.Assessing water sources for drinking and irrigation along with community vulnerability, especially in developing and rural regions, is important for reducing risk posed by poor water quality and limited water availability and accessibility. We present a case study of rural mining-agricultural communities in the Lake Poopó Basin, one of the poorest regions on the Bolivian Altiplano. Here, relatively low rainfall, high evaporation, salinization and unregulated mining activity have contributed to environmental degradation and water issues, which is a situation facing many Altiplano communities. Social data from 72 households and chemical water quality data from 27 surface water and groundwater sites obtained between August 2013 and July 2014 were used to develop locally relevant vulnerability assessment methodologies and ratings with respect to water availability and quality, and Chemical Water Quality Hazard Ratings to assess water quality status. Levels of natural and mining-related contamination in many waters (CWQHR ≥ 6; 78% of assessed sites) mean that effective remediation would be challenging and require substantial investment. Although waters of fair to good chemical quality (CWQHR ≤ 5; 22% of assessed sites) do exist, treatment may still be required depending on use, and access issues remain problematic. There is a need to comply with water quality legislation, improve and maintain basic water supply and storage infrastructure, build and operate water and wastewater treatment plants, and adequately and safely contain and treat mine waste. This study serves as a framework that could be used elsewhere for assessing and mitigating water contamination and availability affecting vulnerable populations.This project was funded by the University College London (UCL) Institute for Risk and Disaster Reduction and the Catholic Agency for Overseas Development (CAFOD) under the initiative of water risk and its management in Bolivia’s Altiplano development strategy, which was led by Stephen Edwards. The Natural Environment Research Council Probability, Uncertainty and Risk in the Environment grant PA13-010 (risk visualisation and quantification for enhanced disaster risk reduction) to Stephen Edwards informed the approach to and outputs from the project

    Perturbative evolution of particle orbits around Kerr black holes: time domain calculation

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    Treating the Teukolsky perturbation equation numerically as a 2+1 PDE and smearing the singularities in the particle source term by the use of narrow Gaussian distributions, we have been able to reproduce earlier results for equatorial circular orbits that were computed using the frequency domain formalism. A time domain prescription for a more general evolution of nearly geodesic orbits under the effects of radiation reaction is presented. This approach can be useful when tackling the more realistic problem of a stellar-mass black hole moving on a generic orbit around a supermassive black hole under the influence of radiation reaction forces.Comment: 8 pages, 5 figures, problems with references and double-printing fixe

    Khat and alcohol use and risky sex behaviour among in-school and out-of-school youth in Ethiopia

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    BACKGROUND: Khat (an evergreen plant with amphetamine-like properties) and alcohol are widely consumed among the youth of Ethiopia. However, their relationship to risky sexual behaviour is not well described. This study was conducted to describe the magnitude of risky sexual behaviour (unprotected sex and early initiation of sexual activity) and its association with Khat and alcohol consumption in Ethiopian youths. METHODS: A probabilistic national sample of 20,434 in-school and out-of-school youths aged between 15 and 24 years of age was selected and interviewed regarding their sexual behavior and substance use. RESULTS: Over 20% of out-of-school youth had unprotected sex during the 12-month period prior to interview compared to 1.4% of in-school youth. Daily Khat intake was also associated with unprotected sex: adjusted OR (95% CI) = 2.26 (1.92, 2.67). There was a significant and linear association between alcohol intake and unprotected sex, with those using alcohol daily having a three fold increased odds compared to those not using it: adj. OR (95% CI) = 3.05 (2.38, 3.91). Use of substances other than Khat was not associated with unprotected sex, but was associated with initiation of sexual activity: adj. OR (95% CI) = 2.54 (1.84, 3.51). CONCLUSION: A substantial proportion of out-of-school youth engage in risky sex. The use of Khat and alcohol and other substances is significantly and independently associated with risky sexual behaviour among Ethiopian youths

    Graphite and Hexagonal Boron-Nitride Possess the Same Interlayer Distance. Why?

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    Graphite and hexagonal boron nitride (h-BN) are two prominent members of the family of layered materials possessing a hexagonal lattice. While graphite has non-polar homo-nuclear C-C intra-layer bonds, h-BN presents highly polar B-N bonds resulting in different optimal stacking modes of the two materials in bulk form. Furthermore, the static polarizabilities of the constituent atoms considerably differ from each other suggesting large differences in the dispersive component of the interlayer bonding. Despite these major differences both materials present practically identical interlayer distances. To understand this finding, a comparative study of the nature of the interlayer bonding in both materials is presented. A full lattice sum of the interactions between the partially charged atomic centers in h-BN results in vanishingly small monopolar electrostatic contributions to the interlayer binding energy. Higher order electrostatic multipoles, exchange, and short-range correlation contributions are found to be very similar in both materials and to almost completely cancel out by the Pauli repulsions at physically relevant interlayer distances resulting in a marginal effective contribution to the interlayer binding. Further analysis of the dispersive energy term reveals that despite the large differences in the individual atomic polarizabilities the hetero-atomic B-N C6 coefficient is very similar to the homo-atomic C-C coefficient in the hexagonal bulk form resulting in very similar dispersive contribution to the interlayer binding. The overall binding energy curves of both materials are thus very similar predicting practically the same interlayer distance and very similar binding energies.Comment: 18 pages, 5 figures, 2 table
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