33 research outputs found
High Energy Density Polyanion Electrode Material: LiVPO<sub>4</sub>O<sub>1–<i>x</i></sub>F<sub><i>x</i></sub> (<i>x</i> ≈ 0.25) with Tavorite Structure
Polyanion compounds
as an electrode material in lithium-ion battery
are of great interest due to superior structural and thermal stability,
but they have relatively low energy density. Here, we report high
energy density electrode material, LiVPO<sub>4</sub>O<sub>1–<i>x</i></sub>F<sub><i>x</i></sub> (<i>x</i> ≈ 0.25) with tavorite structure that is first synthesized
by single-step solid-state reaction and that can use more than 1.6
electrons during charging/discharging process. The doping of F instead
of O into LiVPO<sub>4</sub>O was confirmed with a structural solid-solution
measured by neutron powder diffraction and with a mixed valence state
of V measured by X-ray absorption near edge spectroscopy. The resulting
material has distinct and beneficial electrochemical properties compared
to both LiVPO<sub>4</sub>F and LiVPO<sub>4</sub>O. LiVPO<sub>4</sub>O<sub>0.75</sub>F<sub>0.25</sub> has higher average operating voltage
and better electrochemical activity than LiVPO<sub>4</sub>O and shows
higher operating voltage (∼2.4 V) than LiVPO<sub>4</sub>F (∼1.8
V). As a result, LiVPO<sub>4</sub>O<sub>0.75</sub>F<sub>0.25</sub> can achieve high specific capacity of 260 mA h/g in the voltage
range from 2.0–4.8 V and thereby can deliver 820 W h/kg, which
is relatively high energy density achieved in known polyanion compounds
Uptake Mechanism for Iodine Species to Black Carbon
Natural organic matter (NOM) plays
an important role in determining
the fate and transport of iodine species such as iodide (I<sup>–</sup>) and iodate (IO<sub>3</sub><sup>–</sup>) in groundwater system.
Although NOM exists as diverse forms in environments, prior iodine
studies have mainly focused on uptake processes of iodide and iodate
to humic materials. This study was conducted to determine the iodide
and iodate uptake potential for a particulate NOM (i.e., black carbon
[BC]). A laboratory-produced BC and commercial humic acid were used
for batch experiments to compare their iodine uptake properties. The
BC exhibited >100 times greater uptake capability for iodide than
iodate at low pH of ∼3, while iodide uptake was negligible
for the humic acid. The uptake properties of both solids strongly
depend on the initial iodine aqueous concentrations. After uptake
reaction of iodide to the BC, X-ray absorption fine structure spectroscopy
results indicated that the iodide was converted to electrophilic species,
and iodine was covalently bound to carbon atom in polycyclic aromatic
hydrocarbons present in the BC. The computed distribution coefficients
(i.e., <i>K</i><sub>d</sub> values) suggest that the BC
materials retard significantly the transport of iodide at low pH in
environmental systems containing even a small amount of BC
Visualization 1: Fiber bundle-based integrated platform for wide-field fluorescence imaging and patterned optical stimulation for modulation of vasoconstriction in the deep brain of a living animal
FITC fluorescence cerebrovascular video with bleeding due to vessel damage by excessive insertion of a 620-µm fiber bundle into the brain of living B6 wild-type adult mouse. Originally published in Biomedical Optics Express on 01 June 2017 (boe-8-6-2781
Visualization 5: Fiber bundle-based integrated platform for wide-field fluorescence imaging and patterned optical stimulation for modulation of vasoconstriction in the deep brain of a living animal
Video of vasoconstriction in a single cerebral blood vessel using patterned light stimulation at 4.7 mm below the cortical surface of living ChR2 transgenic mouse (SM22(CAG-ChR2-EYFP)). Originally published in Biomedical Optics Express on 01 June 2017 (boe-8-6-2781
Additional file 1: of Associations between hypertension and the peroxisome proliferator-activated receptor-δ (PPARD) gene rs7770619 C>T polymorphism in a Korean population
Table S1. Top 10 SNPs associated with plasma MDA. Figure S1. Flow of the study participants. (DOCX 112 kb
Additional file 1: Table S1. of EPHA6 rs4857055 C > T polymorphism associates with hypertension through triglyceride and LDL particle size in the Korean population
Top twenty-five SNPs associated with systolic and diastolic BP. (DOCX 17 kb
Additional file 1: Table S1. of The peptidylglycine-ÃŽÄ…-amidating monooxygenase (PAM) gene rs13175330 A>G polymorphism is associated with hypertension in a Korean population
Characteristics of the Korean chip. Table S2. Top ten SNPs associated with systolic and diastolic BP. Table S3. Frequencies of the PAM rs13175330 A>G SNP genotypes in the normotensive controls and HTN group based on antihypertensive therapy. Table S4. PAM gene function. (DOCX 22 kb
Additional file 1: of Impact of 8-week linoleic acid intake in soy oil on Lp-PLA2 activity in healthy adults
P-values for correlations among changes in (Δ) plasma fatty acid level, LDL-cholesterol, oxidized LDL, apolipoprotein B, hs-CRP, hemostatic markers and Lp-PLA2 activity. P-values were derived from Pearson’s correlation coefficients. (DOCX 29 kb
dvdres-oct-2017-00156-File003 – Supplemental material for <i>PPARD</i> rs7770619 polymorphism in a Korean population: Association with plasma malondialdehyde and impaired fasting glucose or newly diagnosed type 2 diabetes
<p>Supplemental material, dvdres-oct-2017-00156-File003 for <i>PPARD</i> rs7770619 polymorphism in a Korean population: Association with plasma malondialdehyde and impaired fasting glucose or newly diagnosed type 2 diabetes by Minjoo Kim, Minkyung Kim, Hye Jin Yoo, Yao Sun, Sang-Hyun Lee and Jong Ho Lee in Diabetes & Vascular Disease Research</p
Correlation between changes (∆) in Lp-PLA<sub>2</sub> and systolic BP and between changes in oxidized LDL and systolic BP in normal-weight (○) and overweight (*) groups according to the <i>PLA2G7</i> V279F genotype.
<p>(a) Correlation between changes in Lp-PLA<sub>2</sub> and systolic BP in individuals with the VV genotype. (b) Correlation between changes in oxidized LDL and systolic BP in individuals with the VV genotype. (c) Correlation between changes in Lp-PLA<sub>2</sub> and systolic BP in individuals with the VF+FF genotype. (d) Correlation between changes in oxidized LDL and systolic BP in individuals with the VF+FF genotype.</p