Sagittal plane spinal mobility is associated with dynamic balance ability of community-dwelling elderly people

Takeuchi, Yahiko

doi:10.1589/jpts.29.112

Cited by 22 publications

(10 citation statements)

References 10 publications

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“…The CVD process occurred through the hydrolysis and condensation of TEOS catalyzed by hydrochloric acid (SI Appendix, Fig. S2) (34,35). After being coated with silica, the morphology was similar to that of the bare soot layer (Fig.…”

Section: Resultsmentioning

confidence: 99%

Superhydrophobic photothermal icephobic surfaces based on candle soot

Alsaid

et al. 2020

Proc. Natl. Acad. Sci. U.S.A.

271

177

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Ice accumulation causes various problems in our daily life for human society. The daunting challenges in ice prevention and removal call for novel efficient antiicing strategies. Recently, photothermal materials have gained attention for creating icephobic surfaces owing to their merits of energy conservation and environmental friendliness. However, it is always challenging to get an ideal photothermal material which is cheap, easily fabricating, and highly photothermally efficient. Here, we demonstrate a low-cost, high-efficiency superhydrophobic photothermal surface, uniquely based on inexpensive commonly seen candle soot. It consists of three components: candle soot, silica shell, and polydimethylsiloxane (PDMS) brushes. The candle soot provides hierarchical nano/microstructures and photothermal ability, the silica shell strengthens the hierarchical candle soot, and the grafted low-surface-energy PDMS brushes endow the surface with superhydrophobicity. Upon illumination under 1 sun, the surface temperature can increase by 53 °C, so that no ice can form at an environmental temperature as low as −50 °C and it can also rapidly melt the accumulated frost and ice in 300 s. The superhydrophobicity enables the melted water to slide away immediately, leaving a clean and dry surface. The surface can also self-clean, which further enhances its effectiveness by removing dust and other contaminants which absorb and scatter sunlight. In addition, after oxygen plasma treatment, the surface can restore superhydrophobicity with sunlight illumination. The presented icephobic surface shows great potential and broad impacts owing to its inexpensive component materials, simplicity, ecofriendliness, and high energy efficiency.

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Section: Resultsmentioning

confidence: 99%

Superhydrophobic photothermal icephobic surfaces based on candle soot

Alsaid

et al. 2020

Proc. Natl. Acad. Sci. U.S.A.

271

177

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“…Silica nanospheres of 200 nm in size were made via the Stöber method. [14,15] 203 mL of ethanol (≥99.8%, VWR) and 15 mL of tetraethyl orthosilicate (TEOS) (Sigma-Aldrich, ≥99.0%) were mixed via magnetic stirring in a volumetric flask. After 10 min of mixing, 27 mL of deionized water was added, and following 10 min of mixing, 4 mL of ammonium hydroxide solution (VWR, 29%) was added dropwise to the solution.…”

Section: Silica Synthesismentioning

confidence: 99%

Insights into the Electrochemical Reduction Products and Processes in Silica Anodes for Next‐Generation Lithium‐Ion Batteries

Entwistle

Booth

Keeble

et al. 2020

Advanced Energy Materials

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The use of silica as a lithium‐ion battery anode material requires a pretreatment step to induce electrochemical activity. The partially reversible electrochemical reduction reaction between silica and lithium has been postulated to produce silicon, which can subsequently reversibly react with lithium, providing stable capacities higher than graphite materials. Up to now, the electrochemical reduction pathway and the nature of the products were unknown, thereby hampering the design, optimization, and wider uptake of silica‐based anodes. Here, the electrochemical reduction pathway is uncovered and, for the first time, elemental silicon is identified as a reduction product. These insights, gleaned from analysis of the current response and capacity increase during reduction, conclusively demonstrated that silica must be reduced to introduce reversible capacity and the highest capacities of 600 mAh g−1 are achieved by using a constant load discharge at elevated temperature. Characterization via total scattering X‐ray pair distribution function analysis reveal the reduction products are amorphous in nature, highlighting the need for local structural methods to uncover vital information often inaccessible by traditional diffraction. These insights contribute toward understanding the electrochemical reduction of silica and can inform the development of pretreatment processes to enable their incorporation into next‐generation lithium‐ion batteries.

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“…A higher degree of complexity can then be integrated into the simple models to take into account more intricate particle-particle interactions. Highly mono-disperse sterically stabilized spherical particles that mimic hard spheres can be synthesized in the lab by following well established protocols 8,9 . The phase behaviour of such systems has been intensively studied and transitions from liquid to crystalline and to jammed glassy states upon increasing sphere concentration have been observed 7 .…”

Section: Introductionmentioning

confidence: 99%

Phase stability of colloidal mixtures of spheres and rods

Opdam

Guu

Schelling

et al. 2021

The Journal of Chemical Physics

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We determined the phase boundaries of aqueous mixtures containing colloidal rod-like fd-viruses and polystyrene spheres using diffusing-wave spectroscopy and compared the results with free volume theory predictions. Excluded volume interactions in mixtures of colloidal rods and spheres lead to mediated depletion interactions. The strength and range of this attractive interaction depend on the concentrations of the particles, the length L and diameter D of the rods and the radius R of the spheres. At strong enough attraction, this depletion interaction leads to phase separation. We experimentally determined the rod and sphere concentrations where these phase transitions occur by systematically varying the size ratios L/R and D/R and the aspect ratio L/D. This was done by using spheres with different radii and modifying the effective diameter of the rods through either the ionic strength of the buffer or anchoring a polymeric brush to the surface of the rods. The observed phase transitions were from a binary fluid to a colloidal gas/liquid phase coexistence which occurred already at very low concentrations due to the depletion efficiency of highly anisotropic rods. The experimentally measured phase transitions were compared to phase boundaries obtained using free volume theory (FVT), a well established theory for calculating the phase behaviour of colloidal particles mixed with depletants. We find good correspondence between the experimental phase transitions and the theoretical FVT model where the excluded volume of the rod-like depletants was explicitly accounted for in both the reservoir and the system.

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Sagittal plane spinal mobility is associated with dynamic balance ability of community-dwelling elderly people

Cited by 22 publications

References 10 publications

Superhydrophobic photothermal icephobic surfaces based on candle soot

Superhydrophobic photothermal icephobic surfaces based on candle soot

Insights into the Electrochemical Reduction Products and Processes in Silica Anodes for Next‐Generation Lithium‐Ion Batteries

Phase stability of colloidal mixtures of spheres and rods

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