7,418 research outputs found

    Long-range nature of Feshbach molecules in Bose-Einstein condensates

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    We discuss the long-range nature of the molecules produced in recent experiments on molecular Bose-Einstein condensation. The properties of these molecules depend on the full two-body Hamiltonian and not just on the states of the system in the absence of interchannel couplings. The very long-range nature of the state is crucial to the efficiency of production in the experiments. Our many-body treatment of the gas accounts for the full binary physics and describes properly how these molecular condensates can be directly probed

    Bootstrapping trust evaluations through stereotypes

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    Trust in Public Health within Black African and Caribbean Communities: Grounded Theory as applied to the COVID-19 Vaccine Uptake

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    Trust plays a critical role in public health, encouraging community unity and cooperation with health initiatives. Despite substantial research on trust, its relationship with race and power dynamics remains under-explored. To address this research gap, the study focused on exploring the relationship between race and trust, particularly within Black African and Caribbean populations that have historically faced discrimination and exclusion in society and healthcare. The study aimed to understand the unique experiences and perspectives of these communities, especially in the context of the COVID-19 pandemic and vaccination efforts in the UK. The study utilised a critical grounded theory methodology, influenced by Community Psychology values, to conduct interviews with 15 self-identified Black African and Caribbean individuals. The discussion explored their public health experiences and their perceptions of trust, with emphasis on the COVID-19 pandemic. The study developed an ecological model to conceptualise the dynamic nature of trust in public health within these communities. The model highlights the influence of social power and structural societal factors, acknowledging that historical marginalisation, colonial injustices, and political distrust contribute to avoidance and scepticism towards public health measures. It proposes that trust in public health is community-driven, highlighting the role of communities in fostering trust, improving health outcomes, and ensuring care continuity and safety. The research advocates for tailored multi-level interventions centred on community engagement and trust to effect enduring change in health outcomes for these communities. It calls for a paradigm shift in public health to promote research, training, and clinical approaches that address systemic biases and encourage the decolonisation of health-related knowledge. The study's implications extend to public health policy, clinical practice, training, and future research. In conclusion, the study underscores the importance of consistent, trustworthy, and transparent actions and accountable processes in public health initiatives, fostering partnerships with marginalised communities to promote equitable and inclusive health practices

    Orders: A Wolf in Sheep\u27s Clothing for Environmental and Toxic Tort Litigation

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    In colorful prose, the author begins the Comment with an excellent hypothetical illustrating the heavy burden a Lone Pine Order places on a plaintiff struggling to keep a toxic torts case in court. Starting with this foundation, the author conducts an in-depth review of the elements and operation of Lone Pine Orders. Next, the author outlines the features of typical torts case, pointing out how the features make compliance with a Lone Pine Order very difficult. The author next discusses and compares the pros and cons of Lone Pine Orders. He thoroughly examines how a Lone Pine Order can be used as a case management tool by the courts to expeditiously dispense with toxic torts cases. In contrast, the author discusses the adequacy of existing procedural safeguards and the inconsistency with which Lone Pine Orders are issued to undermine any case management benefits the orders may serve. The author concludes by arguing that Lone Pine Orders should no longer be used due to both the existence of the procedural safeguards and trends in modern toxic torts cases indicating reliance on such safeguards

    EBSD mapping of herringbone domain structures in tetragonal piezoelectrics

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    Herringbone domain structures have been mapped using electron backscatter diffraction (EBSD) in two tetragonal piezoelectrics, lead zirconate titanate, [Pb(Zr,Ti)O<sub>3</sub>] and bismuth ferrite – lead titanate, [(PbTi)<sub>0.5</sub>(BiFe)<sub>0.5</sub>O<sub>3</sub>]. Analysis of the domain misorientations across the band junctions shows that the structures correspond very well to crystallographic models. High resolution mapping with a 20 nm step size allowed the crystal rotation across one of these band junctions in lead zirconate titanate to be studied in detail and allowed an improved estimation of the peak strain at the junction, of 0.56 GPa. The significance of this for crack nucleation and propagation in such materials is discussed
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