40,744 research outputs found

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    Silver-chlorine fuel cell: A concept

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    Fuel cell regenerated by photochemical reduction enables novel slurry system to transport particles of reduced silver between regenerator section and anode. Fundamental reactions which provide electrical power from the fuel cell are given

    Are There Philosophical Answers to Psychiatric Questions?

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    Contemporary psychiatry has only one generally accepted model, that of biological – materialist explanation and treatment. But clinicians recognize that this model omits much that is important and they therefore confront a dilemma: either limit their practice to an incomplete model, or use other models which seem unfounded and speculative. Philosophical considerations may help clinicians find a way out 1) by showing the inherent limitations of biological – materialist explanations, and 2) by grounding other (psychotherapeutic) approaches on general considerations of how the mind, and in particular language, works. These general considerations include: the dependence of meaning upon environmental context, the attribution of meaning as involving sets of skills, capacities and reactions, the multiplicity of language games and therefore their individual limitations, the dependence of meaning upon our shared interests, the largely unconscious nature of mind and our necessary limitations to public criteria for mental events and processes

    Nonflammable potting-encapsulating and conformal coating compounds

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    Two fluorosilicone rubber formulations have been produced which are nonflammable or self-extinguishing. Extensive report was prepared which includes information on testing and describes many alternate formulations

    Shock Diffraction by Convex Cornered Wedges for the Nonlinear Wave System

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    We are concerned with rigorous mathematical analysis of shock diffraction by two-dimensional convex cornered wedges in compressible fluid flow governed by the nonlinear wave system. This shock diffraction problem can be formulated as a boundary value problem for second-order nonlinear partial differential equations of mixed elliptic-hyperbolic type in an unbounded domain. It can be further reformulated as a free boundary problem for nonlinear degenerate elliptic equations of second order. We establish a first global theory of existence and regularity for this shock diffraction problem. In particular, we establish that the optimal regularity for the solution is C0,1C^{0,1} across the degenerate sonic boundary. To achieve this, we develop several mathematical ideas and techniques, which are also useful for other related problems involving similar analytical difficulties.Comment: 50 pages;7 figure

    Building Strong Readers In Minnesota: PreK-3rd Grade Policies That Support Children's Literacy Development

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    From 2015 through 2016, the Early Education Initiative will be producing a series of reports from states and localities across the United States to provide an inside look at efforts to support children's learning from infancy and extending into the early grades.This paper explores how Minnesota's pre-K through third grade education policies are helping or hindering the ability of school districts, schools, and teachers to ensure that all children are on track to read on grade level by the end of third grade
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