89 research outputs found

    Spatial access to physicians in Shanghai.

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    <p>Spatial access to physicians in Shanghai.</p

    Distribution of health institutions.

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    <p>Distribution of health institutions.</p

    The scatterplot of hospitalization probability and the curve of the probability distribution.

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    <p>The scatterplot of hospitalization probability and the curve of the probability distribution.</p

    Physician shortage areas in Shanghai.

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    <p>Physician shortage areas in Shanghai.</p

    Population density.

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    <p>Population density.</p

    Accessibility to physicians in community hospitals.

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    <p>Accessibility to physicians in community hospitals.</p

    The result of hospitalization probability function model.

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    <p>The result of hospitalization probability function model.</p

    High-Quality Transparent Electrodes Spin-Cast from Preformed Antimony-Doped Tin Oxide Nanocrystals for Thin Film Optoelectronics

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    We present the wet-chemical deposition of antimony-doped tin oxide (ATO) nanocrystals into films and demonstrate that these films have the required high quality to be used as transparent electrodes in thin film optoelectronic devices. Monodisperse, 3 nm diameter ATO nanocrystals, synthesized by an efficient microwave-assisted nonaqueous sol–gel method, are dispersed in tetrahydrofuran (THF) without any additives and processed into films by spin-coating on glass substrates. After thermal treatment, uniform and crack-free films with a low surface roughness of 1.6 nm and tunable thickness of 30 to 800 nm are obtained. A sheet resistance of 395 Ω/square is achieved for a 480 nm thick ATO film with a high transparency of 90% in the visible light range (380–780 nm). To demonstrate that these films are indeed viable as transparent electrodes, we show that an organic light emitting diode (OLED) fabricated on our nanoparticle-based ATO electrode exhibits an electrical and optical performance comparable to an OLED on a commercially available indium tin oxide (ITO) film

    Spatial access to physicians in first-class hospitals.

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    <p>Spatial access to physicians in first-class hospitals.</p
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