Effects of the Vivifrail-B multicomponent exercise program based on society ecosystems theory on physical function in community-dwelling frail older adults: A randomized controlled trial.

Objective: The study aimed to explore the short and long-term effects of the Vivifrail-B multicomponent exercise based on society ecosystems theory on physical function in community-dwelling frail older adults.

Methods: 59 older adults were randomly assigned to the intervention (n = 30) and control (n = 29) groups. The exercise was performed thrice a week for 12 weeks, with one offline group training and two at home training.

Exploration of subgroups and predictors of loneliness among older adults in rural China: A latent profile analysis.

Background: Loneliness is a negative emotional state that can lead to physical and mental health problems. This study's objective was to acquire an in-depth understanding of the heterogeneity and the predictors of loneliness among older adults in rural China and provide valuable references for practical interventions.

Methods: Older rural adults in China (N = 680) were recruited between January and April 2023.

Efficacy of sensory-based static balance training on the balance ability, aging attitude, and perceived stress of older adults in the community: a randomized controlled trial.

Background: This study explores the effect of sensory-based static balance training on the balance ability, aging attitude, and perceived stress of older adults in the community. It provides a practical basis for the in-depth implementation and revision of the community health management model.

Methods: A randomized controlled intervention study was conducted from 2022 to 2023.

Effect of Substrate Negative Bias on the Microstructural, Optical, Mechanical, and Laser Damage Resistance Properties of HfO Thin Films Grown by DC Reactive Magnetron Sputtering.

Hafnium oxide thin films have attracted great attention as promising materials for applications in the field of optical thin films and microelectronic devices. In this paper, hafnium oxide thin films were prepared via DC magnetron sputtering deposition on a quartz substrate. The influence of various negative biases on the structure, morphology, and mechanical and optical properties of the obtained films were also evaluated.

Rebuildable Silver Nanoparticles Employed as Seeds for Synthesis of Pure Silver Nanopillars with Hexagonal Cross-Sections under Room Temperature.

Silver nanopillars with strong plasmonic effects are used for localized electromagnetic field enhancement and regulation and have wide potential applications in sensing, bioimaging, and surface-enhanced spectroscopy. Normally, the controlled synthesis of silver nanopillars is mainly achieved using heterometallic nanoparticles, including Au nanobipyramids and Pd decahedra, as seeds for inducing nanostructure growth. However, the seed materials are usually doped in silver nanopillar products.

Mental health service needs and mental health of old adults living alone in urban and rural areas in China: The role of coping styles.

This study aimed to explore the level and relationship between the mental health service needs (MHSN), coping styles (CS), and mental health (MH) of old adults living alone in urban and rural, and to explore the moderating effects of coping styles. A cross-sectional study was conducted with 717 older adults living alone. The survey measured MHSN, CS, and MH.

Effect of Li Doping on Photoelectric Properties of Double Perovskite CsSnI: First Principles Calculation and Experimental Investigation.

Double perovskite CsSnI and its doping products (with SnI, SnF or organic lithium salts added) have been utilized as p-type hole transport materials for perovskite and dye-sensitized solar cells in many pieces of research, where the mechanism for producing p-type CsSnI is rarely reported. In this paper, the mechanism of forming p-type Li doped CsSnI was revealed by first-principles simulation. The simulation results show that Li entered the CsSnI lattice by interstitial doping to form strong interaction between Li and I, resulting in the splitting of the α spin-orbital of I-p at the top of the valence band, with the intermediate energy levels created and the absorption edge redshifted.

Efficient Achromatic Broadband Focusing and Polarization Manipulation of a Novel Designed Multifunctional Metasurface Zone Plate.

In this paper, comprehensively utilizing the diffraction theory and electromagnetic resonance effect is creatively employed to design a multifunctional metasurface zone plate (MMZP) and achieve the control of polarization states, while maintaining a broadband achromatic converging property in a near-IR region. The MMZP consists of several rings with fixed width and varying heights; each ring has a number of nanofins (usually called meta-atoms). The numerical simulation method is used to analyze the intensity distribution and polarization state of the emergent light, and the results show that the designed MMZP can realize the polarization manipulation while keeping the broadband in focus.

Novel Bilayer Micropyramid Structure Photonic Nanojet for Enhancing a Focused Optical Field.

In this paper, synthetically using refraction, diffraction, and interference effects to achieve free manipulation of the focused optical field, we firstly present a photonic nanojet (PNJ) generated by a micropyramid, which is combined with multilayer thin films. The theory of total internal reflection (TIR) was creatively used to design the base angle of the micropyramid, and the size parameters and material properties of the microstructure were deduced via the expected optical field distribution. The as-designed bilayer micropyramid array was fabricated by using the single-point diamond turning (SPDT) technique, nanoimprint lithography (NIL), and proportional inductively coupled plasma (ICP) etching.

Preparation of Fe Doped High-Ordered TiO Nanotubes Arrays with Visible Photocatalytic Activities.

In this paper, the Fe doped rutile phase TiO nanotubes arrays (NTAs) were prepared in a low temperature water-assistant crystallization method. It is noteworthy that the Fe doping hardly hinders either the crystallization of rutile TiO NTAs or the highly-ordered nanotubular morphologies. Moreover, Fe did not form other compound impurities, which indicated that Fe substitute Ti into the lattice of TiO.