8 research outputs found
Table1_Can healthcare apps and smart speakers improve the health behavior and depression of older adults? A quasi-experimental study.docx
PurposeThis study identified the effects of applying information and communication technologies (ICT) to the health management of older adults aged 65 or older.MethodsOlder adults registered at public health centers were provided with the health management app “Health Today” and a smart speaker for 6 months to perform assigned healthcare missions. The program was conducted for 6 months by dividing participants into two groups: one that received both the health management app and the smart speaker, and another that used only the health management app. Depression, self-efficacy, number of days of moderate-intensity exercise, relative grip strength, balance tests, and five-times-sit-to-stand tests were measured during the pre- and post-evaluation.ResultsBoth groups showed a positive health status and behavioral changes at post-evaluation. However, no reduced depression was observed due to communication and music listening functions in the group that was additionally provided smart speakers.ConclusionICT use in healthcare can be beneficial for older adults. However, whether these devices meet the purpose of the national health project must be determined, and an effect evaluation must be undertaken prior to providing these ICT devices for the health management of older adults in the public domain.</p
Terahertz spin dynamics in rare-earth orthoferrites
Recent interest in developing fast spintronic devices and laser-controllable magnetic solids has sparked tremendous experimental and theoretical efforts to understand and manipulate ultrafast dynamics in materials. Studies of spin dynamics in the terahertz (THz) frequency range are particularly important for elucidating microscopic pathways toward novel device functionalities. Here, we review THz phenomena related to spin dynamics in rare-earth orthoferrites, a class of materials promising for antiferromagnetic spintronics. We expand this topic into a description of four key elements. (1) We start by describing THz spectroscopy of spin excitations for probing magnetic phase transitions in thermal equilibrium. While acoustic magnons are useful indicators of spin reorientation transitions, electromagnons that arise from dynamic magnetoelectric couplings serve as a signature of inversion-symmetry-breaking phases at low temperatures. (2) We then review the strong laser driving scenario, where the system is excited far from equilibrium and thereby subject to modifications to the free energy landscape. Microscopic pathways for ultrafast laser manipulation of magnetic order are discussed. (3) Furthermore, we review a variety of protocols to manipulate coherent THz magnons in time and space, which are useful capabilities for antiferromagnetic spintronic applications. (4) Finally, new insights on the connection between dynamic magnetic coupling in condensed matter and the Dicke superradiant phase transition in quantum optics are provided. By presenting a review on an array of THz spin phenomena occurring in a single class of materials, we hope to trigger interdisciplinary efforts that actively seek connections between subfields of spintronics, which will facilitate the invention of new protocols of active spin control and quantum phase engineering
Giant Field Enhancements in Ultrathin Nanoslots above 1 Terahertz
Strong
demand for plasmonic devices with an enormously enhanced
electric field and desired resonance frequencies has led to extensive
investigations of metallic slot structures. While strong field enhancement
can be achieved by reducing the width of the slot, the effect of the
gap surface plasmon limits the maximum achievable field enhancement
at higher frequencies. Specifically, the effect of the gap surface
plasmon becomes stronger as the gap width decreases and strongly suppresses
the transmission while causing a red-shift of the resonance. Here,
we overcome these issues and realize strong field enhancements at
higher frequencies, by managing the metal thickness of the nanoslots.
We show that, as the nanoslots become as thin as 10 nm, they show
a giant electric field enhancement of up to 7600. Moreover, the resonances
are strongly blue-shifted to above 1 THz from 0.33 THz. Our work provides
a novel route to achieving high field enhancements at desired frequencies,
as well as a means by which to characterize the slot as the gap-sensitive
or substrate-sensitive type
Fabrication of Efficient Formamidinium Tin Iodide Perovskite Solar Cells through SnF<sub>2</sub>–Pyrazine Complex
To
fabricate efficient formamidinium tin iodide (FASnI<sub>3</sub>) perovskite
solar cells (PSCs), it is essential to deposit uniform
and dense perovskite layers and reduce Sn<sup>4+</sup> content. Here
we used solvent-engineering and nonsolvent dripping process with SnF<sub>2</sub> as an inhibitor of Sn<sup>4+</sup>. However, excess SnF<sub>2</sub> induces phase separation on the surface of the perovskite
film. In this work, we report the homogeneous dispersion of SnF<sub>2</sub> via the formation of the SnF<sub>2</sub>–pyrazine
complex. Consequently, we fabricated FASnI<sub>3</sub> PSCs with high
reproducibility, achieving a high power conversion efficiency of 4.8%.
Furthermore, the encapsulated device showed a stable performance for
over 100 days, maintaining 98% of its initial efficiency
Co-designing asthma health literacy with culturally and linguistically diverse (CALD) communities
Co-designing asthma health literacy with culturally and linguistically diverse (CALD) communitie
Additional file 1 of Nutlin-3a induces KRAS mutant/p53 wild type lung cancer specific methuosis-like cell death that is dependent on GFPT2
Additional file 1
Effect of Buffer Conditions and Organic Cosolvents on the Rate of Strain-Promoted Azide–Alkyne Cycloaddition
We
investigate the effect of buffer identity, ionic strength, pH,
and organic cosolvents on the rate of strain-promoted azide–alkyne
cycloaddition with the widely used DIBAC cyclooctyne. The rate of
reaction between DIBAC and a hydrophilic azide is highly tolerant
to changes in buffer conditions but is impacted by organic cosolvents.
Thus, bioconjugation reactions using DIBAC can be carried out in the
buffer that is most compatible with the biomolecules being labeled,
but the use of organic cosolvents should be carefully considered
