Effects of Dexmedetomidine on Postoperative Quality of Recovery and Electroencephalogram in Elderly Patients Undergoing Total Knee Arthroplasty: A Randomized Clinical Trial.

Purpose: Anesthesia management strategies in elderly patients undergoing total knee arthroplasty (TKA) are critical to the postoperative quality of recovery (QoR), and changes in electroencephalogram (EEG) associated with anesthesia drugs may play an important role in this process. This study aimed to determine the effects of different doses of dexmedetomidine on postoperative QoR in elderly TKA patients, and whether there is a correlation with specific EEG changes.

Methods: In this randomized controlled trial, elderly patients (aged ≥ 60 years) undergoing elective TKA were randomly allocated in a 1:1:1 ratio to 0.

Dynamic distribution, regional differences and convergence of health workforce allocation in township health centers in China.

This study evaluated the dynamic distribution, regional differences, and convergence of health workforce allocation in Township Health Centers in China during 2011-2020 using data obtained from the China Health Statistics Yearbook (2012-2021). The Gini coefficient and kernel density estimation were chosen to examine the dynamic distribution and regional differences in health workforce allocation in Township Health Centers in China and their components. σ convergence and β convergence were used to investigate the change trend of health workforce allocation in Township Health Centers.

Disparity in hospital beds' allocation at the county level in China: an analysis based on a Health Resource Density Index (HRDI) model.

Background: As approximately 3/4 of the population lives in county-level divisions in China, the allocation of health resources at the county level will affect the realization of health equity. This study aims to evaluate the disparity in hospital beds at the county level in China, analyze its causes, and discuss measures to optimize the allocation.

Methods: Data were drawn from the Chinese County/City Statistical Yearbook (2001-2020).

Sulfonic acid functionalized β zeolite as efficient bifunctional solid acid catalysts for the synthesis of 5-hydroxymethylfurfural from cellulose.

Introduction of the sulfonic acid group into H-β zeolite to prepare β-SOH bifunctional catalysts for the efficient synthesis of 5-hydroxymethylfurfural (HMF) from cellulose. Catalysts characterization, such as XRD, ICP-OES, SEM (Mapping), FTIR, XPS, N adsorption-desorption isotherm, NH-TPD, Py-FTIR demonstrate the sulfonic acid group was successfully grafted onto the β zeolite. A superior HMF yield (59.

Mechanisms of polystyrene nanoplastics adsorption onto activated carbon modified by ZnCl.

In this study, the adsorption capacity of activated carbon was enhanced after zinc chloride activation. The effects of pore filling, n-π and π-π interaction and electrostatic interaction on the adsorption of polystyrene nanoplastics (PSNPs) by activated carbon were determined by SEM, BET, Raman spectrum, FTIR and surface Zeta potential. Pore filling, electrostatic interaction and n-π interaction and π-π interaction all played a role in the adsorption process, but n-π interaction and π-π interaction was not the decisive role.

Hf-β zeolites as highly efficient catalysts for the production of 5-hydroxymethylfurfural from cellulose in biphasic system.

In this work, a series of (x)Hf-β zeolite catalysts were prepared by a simple wet impregnation method and used as bifunctional catalysts with Lewis and Brønsted acid sites for synthesizing 5-hydroxymethylfurfural (5-HMF) from cellulose in HO-THF biphasic system. Characterization analysis of (x)Hf-β zeolite catalysts with ICP-OES, N adsorption-desorption isotherm, XRD, FTIR, SEM, NH-TPD and Py-FTIR indicated that the catalysts possessed favorable pore structure, appropriate acid strength and acidity. A superior 86.

Transformer oil quality evaluation using quantitative phase microscopy.

Transformer oil used in oil-filled electrical power transformers aims at insulating, stopping arcing and corona discharge, and dissipating transformer heat. Transformer running inevitably induces molecule decomposition, thus leading to gases released into transformer oil. The released gases not only reduce the transformer oil's performance but also possibly induce transformer fault.

Activation of O by zero-valent zinc assisted with Cu(II) for organics removal: Performance and mechanism.

This study proposes a method to activate O by accelerating the corrosion process for zero-valent zinc (ZVZ) with the assistance of Cu(II), promoting the consecutive production of reactive oxygen species. The mechanisms for reactive oxygen species generation are clarified with metronidazole (MTZ) as the targeted pollutant. The outcome suggests the association of Cu(Ⅱ) and ZVZ presents an apparent cooperative activity, an enhancement of 85% in MTZ removal is attained for the ZVZ/Cu(Ⅱ) system after 10 min compared to that for ZVZ.

Enhanced removal of polyethylene terephthalate microplastics through polyaluminum chloride coagulation with three typical coagulant aids.

Given the discovery and hazard of microplastics in freshwater environments, the removal of microplastics in drinking water deserves more attention. Nevertheless, in the light of existing literature, the effectiveness of conventional coagulation on microplastics removal is insufficient. Hence, enhanced coagulation is worth being explored.