22 research outputs found
Multiple linear regression analysis of the FRS as for important covariates (model I to model III).
*<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).
*<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
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.
*<p><i>P</i>-value by Pearson correlation analysis.</p
Baseline Characteristics of the study subjects (n = 15,239).
<p>All values are the mean ± SD, median (interquartile range) or the number of subjects (percent of the total).</p
Additional file 1 of Ensemble size versus bias correction effects in subseasonal-to-seasonal (S2S) forecasts
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
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
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
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