5 research outputs found
DataSheet_1_Association between red cell distribution width–and–albumin ratio and the risk of peripheral artery disease in patients with diabetes.csv
AimThe aim of this study is to explore the association between red blood cell distribution width–to–albumin ratio (RAR) and the risk of peripheral artery disease (PAD) in patients with diabetes.MethodsThis cross-sectional study extracted the data of 1,125 participants with diabetes from the National Health and Nutrition Examination Survey database. A weighted univariable logistic regression model was used to explore variables associated with PAD. With PAD as the outcome variable, a weighted logistic regression model was established. The odds ratio (OR) and 95% confidence interval (CI) were effect size.ResultsAfter adjusting for covariates, the risk of PAD in patients with diabetes was observed in those with higher RAR (OR = 1.83; 95% CI: 1.06–3.15). In addition, RAR ≥3.25 was related to increased risk of PAD in patients with diabetes (OR = 2.04; 95% CI: 1.05–3.95). In people with diabetes aged ≥65, RAR was a risk factor for PAD with an OR value of 2.67 (95% CI: 1.30–5.46). RAR ≥3.25 was associated with increased risk of PAD (OR = 3.06; 95% CI: 1.15–8.11) relative to RAR ConclusionA higher RAR was related to increased risk of PAD in patients with diabetes. The findings might offer a reference for the management of PAD in patients with diabetes.</p
Table_1_Association between red cell distribution width–and–albumin ratio and the risk of peripheral artery disease in patients with diabetes.docx
AimThe aim of this study is to explore the association between red blood cell distribution width–to–albumin ratio (RAR) and the risk of peripheral artery disease (PAD) in patients with diabetes.MethodsThis cross-sectional study extracted the data of 1,125 participants with diabetes from the National Health and Nutrition Examination Survey database. A weighted univariable logistic regression model was used to explore variables associated with PAD. With PAD as the outcome variable, a weighted logistic regression model was established. The odds ratio (OR) and 95% confidence interval (CI) were effect size.ResultsAfter adjusting for covariates, the risk of PAD in patients with diabetes was observed in those with higher RAR (OR = 1.83; 95% CI: 1.06–3.15). In addition, RAR ≥3.25 was related to increased risk of PAD in patients with diabetes (OR = 2.04; 95% CI: 1.05–3.95). In people with diabetes aged ≥65, RAR was a risk factor for PAD with an OR value of 2.67 (95% CI: 1.30–5.46). RAR ≥3.25 was associated with increased risk of PAD (OR = 3.06; 95% CI: 1.15–8.11) relative to RAR ConclusionA higher RAR was related to increased risk of PAD in patients with diabetes. The findings might offer a reference for the management of PAD in patients with diabetes.</p
In Situ NMR Observation of the Temporal Speciation of Lithium Sulfur Batteries during Electrochemical Cycling
The
understanding of the reaction mechanism and temporal speciation
of the lithium–sulfur batteries is challenged by complex polysulfide
disproportionation chemistry coupled with the precipitation and dissolution
of species. In this report, for the first time, we present a comprehensive
method to investigate lithium sulfur electrochemistry using in situ <sup>7</sup>Li NMR spectroscopy, a technique that is capable of quantitatively
capturing the evolution of the soluble and precipitated lithium (poly)Âsulfides
during electrochemical cycling. Through deconvolution and quantification,
every lithium-bearing species was closely tracked and four-step soluble
lithium polysulfide-mediated lithium sulfur electrochemistry was demonstrated
in never before seen detail. Significant irreversible accumulation
of Li<sub>2</sub>S is observed on the Li metal anode after four cycles
because of sulfur shuttling. The application of the method presented
here to study electrolyte/additive development and lithium protection
research can be readily envisaged
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Origin of Electrochemical, Structural, and Transport Properties in Nonaqueous Zinc Electrolytes
Through
coupled experimental analysis and computational techniques, we uncover
the origin of anodic stability for a range of nonaqueous zinc electrolytes.
By examination of electrochemical, structural, and transport properties
of nonaqueous zinc electrolytes with varying concentrations, it is
demonstrated that the acetonitrile–ZnÂ(TFSI)<sub>2</sub>, acetonitrile–ZnÂ(CF<sub>3</sub>SO<sub>3</sub>)<sub>2</sub>, and propylene carbonate–ZnÂ(TFSI)<sub>2</sub> electrolytes can not only support highly reversible Zn deposition
behavior on a Zn metal anode (≥99% of Coulombic efficiency)
but also provide high anodic stability (up to ∼3.8 V vs Zn/Zn<sup>2+</sup>). The predicted anodic stability from DFT calculations is
well in accordance with experimental results, and elucidates that
the solvents play an important role in anodic stability of most electrolytes.
Molecular dynamics (MD) simulations were used to understand the solvation
structure (e.g., ion solvation and ionic association) and its effect
on dynamics and transport properties (e.g., diffusion coefficient
and ionic conductivity) of the electrolytes. The combination of these
techniques provides unprecedented insight into the origin of the electrochemical,
structural, and transport properties in nonaqueous zinc electrolytes
Functionality Selection Principle for High Voltage Lithium-ion Battery Electrolyte Additives
A new class of electrolyte additives
based on cyclic fluorinated
phosphate esters was rationally designed and identified as being able
to stabilize the surface of a LiNi<sub>0.5</sub>Mn<sub>0.3</sub>Co<sub>0.2</sub>O<sub>2</sub> (NMC532) cathode when cycled at potentials
higher than 4.6 V vs Li<sup>+</sup>/Li. Cyclic fluorinated phosphates
were designed to incorporate functionalities of various existing additives
to maximize their utilization. The synthesis and characterization
of these new additives are described and their electrochemical performance
in a NMC532/graphite cell cycled between 4.6 and 3.0 V are investigated.
With 1.0 wt % 2-(2,2,2-trifluoroethoxy)-1,3,2-dioxaphospholane 2-oxide
(TFEOP) in the conventional electrolyte the NMC532/graphite cell exhibited
much improved capacity retention compared to that without any additive.
The additive is believed to form a passivation layer on the surface
of the cathode via a sacrificial polymerization reaction as evidenced
by X-ray photoelectron spectroscopy (XPS) and nuclear magnetic resonsance
(NMR) analysis results. The rational pathway of a cathode-electrolyte-interface
formation was proposed for this type of additive. Both experimental
results and the mechanism hypothesis suggest the effectiveness of
the additive stems from both the polymerizable cyclic ring and the
electron-withdrawing fluorinated alkyl group in the phosphate molecular
structure. The successful development of cyclic fluorinated phosphate
additives demonstrated that this new functionality selection principle,
by incorporating useful functionalities of various additives into
one molecule, is an effective approach for the development of new
additives