1,782 research outputs found

    Changing medicine and building community: Maine’s Adverse Childhood Experiences momentum

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    Physicians are instrumental in community education, prevention, and intervention for adverse childhood experiences. In Maine, a statewide effort is focusing on education about adverse childhood experiences and ways that communities and physicians can approach childhood adversity. This article describes how education about adversity and resilience can positively change the practice of medicine and related fields. The Maine Resilience Building Network brings together ongoing programs, supports new ventures, and builds on existing resources to increase its impact. It exemplifies the collective impact model by increasing community knowledge, affecting medical practice, and improving lives.https://digitalcommons.library.umaine.edu/extension_family/1000/thumbnail.jp

    Mesoscopic modelling of enamel interaction with mid-infrared sub-ablative laser pulses

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    Using a finite element approach the authors model the influence of enamel's microstructure and water distribution on the temperature and stress at the centre of the laser spot, for a CO2 laser working at 10.6 μm, with 0.35 μs pulse duration and sub-ablative intensity. The authors found that the distribution of water in enamel significantly influences the stress generated at the end of one laser pulse: much lower (two orders of magnitude) stress values occur in models with homogeneously distributed water than in models with 0.27 vol.% water located in pores or 4 vol.% in layers. The amount of water in enamel has a strong influence on the stress distribution, but not on the maximum stress values reached. However, different water contents do not influence the temperature distribution in enamel. These results suggest that adequate modelling of the ablation mechanisms in enamel, as in other highly inhomogeneous materials, must include their structure at the mesoscopic scale

    Stochastic ϕ4−\phi^4-Theory in the Strong Coupling Limit

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    The stochastic ϕ4\phi^4-theory in d−d-dimensions dynamically develops domain wall structures within which the order parameter is not continuous. We develop a statistical theory for the ϕ4\phi^4-theory driven with a random forcing which is white in time and Gaussian-correlated in space. A master equation is derived for the probability density function (PDF) of the order parameter, when the forcing correlation length is much smaller than the system size, but much larger than the typical width of the domain walls. Moreover, exact expressions for the one-point PDF and all the moments are given. We then investigate the intermittency issue in the strong coupling limit, and derive the tail of the PDF of the increments ϕ(x2)−ϕ(x1)\phi(x_2) - \phi(x_1). The scaling laws for the structure functions of the increments are obtained through numerical simulations. It is shown that the moments of field increments defined by, Cb=C_b=, behave as ∣x1−x2∣ξb|x_1-x_2|^{\xi_b}, where ξb=b\xi_b=b for b≤1b\leq 1, and ξb=1\xi_b=1 for b≥1b\geq1Comment: 22 pages, 6 figures. to appear in Nuclear. Phys.
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