1,664 research outputs found

    Strengthening the Paediatricians Project 1: The need, content and process of a workshop to address the Priority Mental Health Disorders of adolescence in countries with low human resource for health

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    <p>Abstract</p> <p>Objective</p> <p>World Health Organization has identified <it>Priority Mental Health Disorders </it>(PMHD) of adolescence. To effectively address these disorders at the primary care level paediatricians have to be trained in the low-income countries, which often have paucity of mental health resources. We studied: (1) the need of psychiatric training required among paediatricians; (2) if the content and process of the model workshop suits them to identify and treat these disorders.</p> <p>Methods</p> <p>Forty-eight paediatricians completed evaluation questionnaire at the end of a 3-day workshop on adolescent psychiatry. They participated in a focused group discussion addressing the areas in psychiatry that needs to be strengthened in these workshops, the changes in the content and process of the workshop to bolster their learning. Qualitative and descriptive analyses were appropriately used.</p> <p>Results</p> <p>Training in adolescent psychiatry was considered necessary among the paediatricians at zonal level frequently to develop their private practice, treat psychiatric disorders confidently, make correct referrals, and learn about counselling. Prioritizing training from under and postgraduate training, integrate psychiatry training with conference, conducting special workshops or Continuing Medical Education were suggested as ways of inculcating adolescent psychiatry proficiency. Mental status examination, psychopathology and management of the PMHD were considered by the respondents as important content that need to be addressed in the program but aspects of behavioural problems and developmental disabilities were also identified as areas of focus to gain knowledge and skill. Appropriate group size, flexibility in management decisions to fit the diverse clinical practice- settings was appreciated. Lack of skills in giving clinical reasoning in relation to PMHD, time management and feedback to individuals were identified as required components in the collaborative effort of this manner. Providing delegates with basic information on adolescent psychiatry prior to the workshop was suggested to make the workshop more valuable.</p> <p>Conclusions</p> <p>There is a need to expand training for paediatricians from various backgrounds in adolescent psychiatry to strengthen their clinical skills to address the PMHD at the primary-care level. The evaluation suggests that the design and collaborative approach evident in this programme have merit as a model for training paediatricians in adolescent psychiatry in countries with low human resource for health.</p

    Oral yeasts and coliforms in HIV-infected patients in Hong Kong

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    The Impact of Fine-scale Reservoir Geometries on Streamline Flow Patterns in Submarine Lobe Deposits Using Outcrop Analogues from the Karoo Basin

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    Improved prediction of the recovery of oil-in-place in basin-floor fan reservoirs requires accurate characterisation and modelling of multiscale heterogeneities. The use of outcrop analogues is a key tool to augment this process by documenting and quantifying sedimentary architecture, hierarchy, and sedimentary facies relationships. A 3D geological modelling workflow is presented that tests the impact of fine-scale heterogeneities within basin-floor lobe complexes on reservoir connectivity. Construction of geological models of a basin-floor lobe complex allows realistic depositional architecture and facies distributions to be captured. Additionally, detailed models are constructed from channelised areas within a basin-floor lobe complex. Petrophysical modelling and streamline analysis are employed to test the impact on reservoir connectivity between lobe models with i) vertically-stacked facies with coarsening- and thickening-upwards trends in all locations, and ii) lateral facies changes with dimensions and distributions constrained from outcrop data. The findings show that differences in facies architecture, and in particular lobe-on-lobe amalgamation, have a significant impact on connectivity and macroscopic sweep efficiency, which influence the production results. Channelised lobe areas are less predictable reservoir targets due to uncertainties associated with channel-fill heterogeneities. The use of deterministic sedimentary architecture concepts and facies relationships have proven vital in the accurate modelling of reservoir heterogeneities

    COVID-19: looking beyond the peak. Challenges and tips for radiologists in follow-up of a novel patient cohort

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    As the coronavirus pandemic evolves, the focus of radiology departments has begun to change. The acute phase of imaging a new disease entity whilst rationalising radiology services in the face of lockdown has passed. Radiologists are now becoming familiar with the complications of COVID-19, particularly the lung parenchymal and pulmonary vascular sequelae and are considering the impact follow-up imaging may have on departments already struggling with a backlog of suspended imaging in the face of reduced capacity. This review from the British Society of Thoracic Imaging explores both the thoracic and extra-thoracic complications of COVID-19, recognising the importance of a holistic approach to patient follow-up. The British Thoracic Society guidelines for respiratory follow-up of COVID-19 will be discussed, together with newly developed reporting templates, which aim to provide consistency for clinicians as well as an opportunity for longer-term data collection

    ZnO@ZIF-8: Gas sensitive core-shell hetero-structures show reduced cross-sensitivity to humidity

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    A ‘lawn-like’ distribution of interconnected zinc oxide nanorods, coated with a metal-organic compound based on zeolitic imidazolate frameworks – ZIF-8 was prepared on microstructured thin-film interdigitated Pt-electrodes forming ZnO@ZIF-8 core-shell heterostructures and investigated as gas sensor material in relation to the identical, but uncovered pure ZnO-layer. This composite combines the gas sensing properties of the metal oxide ZnO with the specific properties of the metal-organic framework material which result in a distinct change of the conditions of gas sensing at the ZnO/ZIF-8-interface. Herein, for the first time it is reported that as prepared ZnO@ZIF-8 composite material is an attractive choice to reduce the cross-sensitivity to water vapour (humidity) in the gas sensing response towards propene and ethene. The observed change of sensitivity in relation to uncovered ZnO is discussed to be due to (i) the specific interaction of the ZIF-8 at the interface with the ZnO taking influence on the gas reaction processes, (ii) the diffusivity of ZIF-8 for the different gas components, and (iii) the sorption behaviour of the used gases at the ZnO interface and inside the ZIF-8 material

    Enhanced photocatalytic and antibacterial ability of Cu-doped anatase TiO2 thin films: theory and experiment.

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    Multifunctional thin films which can display both photocatalytic and antibacterial activity are of great interest industrially. Here, for the first time, we have used aerosol assisted chemical vapour deposition (AACVD) to deposit highly photoactive thin films of Cu-doped anatase TiO2 on glass substrates. The films displayed much enhanced photocatalytic activity relative to pure anatase, and showed excellent antibacterial (vs S.Aureus and E.Coli) ability. Using a combination of transient absorption spectroscopy (TAS), photoluminescence (PL) measurements and hybrid density functional theory calculations, we have gained nanoscopic insights into the improved properties of the Cu-doped TiO2 films. Our analysis has highlighted that the interactions between substitutional and interstitial Cu in the anatase lattice can explain the extended exciton lifetimes observed in the doped samples, and the enhanced UV/visible light photoactivities observed

    Voltage-driven displacement of magnetic vortex cores

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    Abstract Magnetic vortex cores in polycrystalline Ni discs underwent non-volatile displacements due to voltage-driven ferroelectric domain switching in single-crystal BaTiO3. This behaviour was observed using photoemission electron microscopy to image both the ferromagnetism and ferroelectricity, while varying in-plane sample orientation. The resulting vector maps of disc magnetization match well with micromagnetic simulations, which show that the vortex core is translated by the transit of a ferroelectric domain wall, and thus the inhomogeneous strain with which it is associated. The non-volatility is attributed to pinning inside the discs. Voltage-driven displacement of magnetic vortex cores is novel, and opens the way for studying voltage-driven vortex dynamics.The Royal Society, Gates Cambridge, the Winton Programme for the Physics of Sustainability, Trinity College (Cambridge), Agència de Gestió d’Ajuts Universitaris i de Recerca (AGAUR) from the Catalan governmen

    Voltage-driven annihilation and creation of magnetic vortices in Ni discs.

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    Using photoemission electron microscopy (PEEM) to image ferromagnetism in polycrystalline Ni disks, and ferroelectricity in their single-crystal BaTiO3 substrates, we find that voltage-driven 90° ferroelectric domain switching serves to reversibly annihilate each magnetic vortex via uniaxial compressive strain, and that the orientation of the resulting bi-domain reveals the chirality of the annihilated vortex. Micromagnetic simulations reveal that only 60% of this strain is required for annihilation. Voltage control of magnetic vortices is novel, and should be energetically favourable with respect to the use of a magnetic field or an electrical current. In future, stray field from bi-domains could be exploited to read vortex chirality. Given that core polarity can already be read via stray field, our work represents a step towards four-state low-power memory applications.The Royal Society, Gates Cambridge, the Winton Programme for the Physics of Sustainability, Trinity College, Agència de Gestió d’Ajuts Universitaris i de Recerca (AGAUR) from the Catalan government for Beatriu de Pinós postdoctoral fellowship (2014 BP-A 00079)
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