22 research outputs found

    Multiple linear regression analysis of the FRS as for important covariates (model I to model III).

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    *<p><i>P</i>-value by multiple linear regression analysis.</p><p>MODEL II = MODEL I plus apoA-I. MODEL III = MODEL I plus apoB/apoA-I.</p

    Multiple linear regression analysis of the FRS as for important covariates (model IV and model V).

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    *<p><i>P</i>-value by multiple linear regression analysis.</p><p>MODEL IV = MODEL I plus apoB. MODEL V = MODEL I plus apoA-I, apoB/apoA-I and apoB.</p

    Fabrication of GaAs, In<sub><i>x</i></sub>Ga<sub>1–<i>x</i></sub>As and Their ZnSe Core/Shell Colloidal Quantum Dots

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    We first report the GaAs/ZnSe and In<sub><i>x</i></sub>Ga<sub>1–<i>x</i></sub>As/ZnSe core/shell structured colloidal quantum dots (CQDs). GaAs based CQD, which are hard to obtain by the chemical synthetic method, can be prepared successfully using the acetylacetonate complex of indium and gallium as cationic precursors. We control the indium contents, and the photoluminescence emission is tuned from orange to deep red. In<sub>0.2</sub>Ga<sub>0.8</sub>As/ZnSe core/shell QDs show the best quantum yield of 25.6%. A ZnSe outer shell protects the core and improves quantum yield, and it shows a large red shift owing to the quasi-type-I band structure

    Correlation between the FRS and the clinical variables.

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    *<p><i>P</i>-value by Pearson correlation analysis.</p

    Baseline Characteristics of the study subjects (n = 15,239).

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    <p>All values are the mean ± SD, median (interquartile range) or the number of subjects (percent of the total).</p

    Selection of study participants.

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    <p>Selection of study participants.</p

    Additional file 1 of Ensemble size versus bias correction effects in subseasonal-to-seasonal (S2S) forecasts

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    Additional file 1: Fig. S1 Same as Fig. 2, but for the JJA forecasts. Fig. S2 Global distribution of the standard deviation of observation for (a) 50- and (b) 500-hPa geopotential heights. Fig. S3 Same as Fig. 5, but for the JJA forecasts. Fig. S4 Same as Fig. 2, but for temperature forecasts. Fig. S5 Same as Fig. 5, but for temperature forecasts. Fig. S6 Same as Fig. 5, but with the long-term reforecasts

    Fabrication of CuInTe<sub>2</sub> and CuInTe<sub>2–<i>x</i></sub>Se<sub><i>x</i></sub> Ternary Gradient Quantum Dots and Their Application to Solar Cells

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    We report the first synthesis of colloidal CuInTe<sub>2</sub>, CuInTe<sub>2–<i>x</i></sub>Se<sub><i>x</i></sub> gradient alloyed quantum dots (QDs) through a simple hot injection method. We confirmed the composition of synthesized QDs to cationic rich phase of CuIn<sub>1.5</sub>Te<sub>2.5</sub> and Cu<sub>0.23</sub>In<sub>0.36</sub>Te<sub>0.19</sub>Se<sub>0.22</sub> with XPS and ICP analysis, and we have also found that the gradient alloyed Cu<sub>0.23</sub>In<sub>0.36</sub>Te<sub>0.19</sub>Se<sub>0.22</sub> QDs exhibit greatly improved stability over the CuIn<sub>1.5</sub>Te<sub>2.5</sub> QDs. The solution-processed solar cell based on the gradient alloyed Cu<sub>0.23</sub>In<sub>0.36</sub>Te<sub>0.19</sub>Se<sub>0.22</sub> QDs exhibited 17.4 mA/cm<sup>2</sup> of short circuit current density (<i>J</i><sub>sc</sub>), 0.40 V of open circuit voltage (<i>V</i><sub>oc</sub>), 44.1% of fill factor (FF), and 3.1% of overall power conversion efficiency at 100 mW/cm<sup>2</sup> AM 1.5G illumination

    Highly Stable Metal Mono-Oxide Alloy Nanoparticles and Their Potential as Anode Materials for Li-Ion Battery

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    We report the synthesis of Mn<sub><i>x</i></sub>Ni<sub>1‑<i>x</i></sub>O and Mn<sub><i>y</i></sub>Co<sub>1‑<i>y</i></sub>O alloy nanoparticles by the thermal decomposition of the metal precursor in a surfactant. The different sized and shaped Mn<sub><i>x</i></sub>Ni<sub>1<i>‑x</i></sub>O and Mn<sub><i>y</i></sub>Co<sub>1<i>‑y</i></sub>O nanoparticles could be obtained by controlling precursors and surfactants. These alloy nanoparticles are antiferromagnetic and their stability is better than that of pure metal mono-oxides. On the basis of these results, we expect these alloy nanoparticles to have potential applications as electrodes in energy-generating devices such as Li-ion batteries. The higher Ni content (Mn<sub>0.19</sub>Ni<sub>0.81</sub>O) electrode exhibited a large reversible capacity (650 mAh g<sup>–1</sup>), a better initial efficiency (56%), and an improved rate and cycle performance, which was ascribed to higher electrical/electrolyte conductivity or improved surface film property. To our best knowledge, the reversible Li storage in metal oxides like MnO or NiO nanoparticles with about 10 nm diameter material itself has not been reported yet, indicative of the originality of the anode application of our materials. Also, we could expect a higher stability by addition of Mn into theconversion anode and reduction of material cost when compared with the very expensive Sn- or Mo-based oxide materials, electrolyte conductivity, or improved surface film property

    Transformation from Cu<sub>2–<i>x</i></sub>S Nanodisks to Cu<sub>2–<i>x</i></sub>S@CuInS<sub>2</sub> Heteronanodisks via Cation Exchange

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    Cationic-exchange methods allow for the fabrication of metastable phases or shapes, which are impossible to obtain with conventional synthetic colloidal methods. Here, we present the systematic fabrication of heteronanostructured (HNS) Cu<sub>2–<i>x</i></sub>S@CuInS<sub>2</sub> nanodisks via a cationic-exchange reaction between Cu and In atoms. The indium–trioctylphosphine complex favorably attacks the lateral (16 0 0) plane of the roxbyite Cu<sub>2–<i>x</i></sub>S hexagon. We explain the phenomena by estimating the formation energy of vacancies and the heat of reaction required to exchange three Cu atoms with an In atom via density functional theory calculations. In an experiment, a decrease in the amount of trioctylphosphine surfactant slows the reaction rate and allows for the formation of a lateral heterojunction structure of nanoplatelets. We analyze the exact structures of these materials using scanning transmission electron microscopy–energy dispersive X-ray spectroscopy and high-resolution transmission electron microscopy. Moreover, we demonstrate that our heteronanodisk can be an intermediate for different HNS materials; for example, adding gold precursors to a Cu<sub>2–<i>x</i></sub>S@CuInS<sub>2</sub> nanodisk results in a AuS@CuInS<sub>2</sub> nanodisk via an additional cationic reaction between Cu ions and Au ions
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