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[Structural equation analysis and modeling of adverse ergonomic factors for lower back pain].
Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi
December 2024
Laboratory of Occupational Protection and Ergonomics, National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China.
Article Synopsis
- The study aimed to create a structural equation model to analyze lower back pain and its risk factors among workers in China, based on data from nearly 74,500 cases collected through an epidemiological survey.
- Using confirmatory factor analysis, researchers identified key factors affecting lower back pain, including individual characteristics, work organization, working postures, work types, and muscle fatigue, which were grouped into six categories.
- The model demonstrated good reliability and validity with strong correlations among the identified factors, highlighting that work organization and working postures significantly influence lower back pain, along with a notable linkage between work types and postures.
Efficient ion transport mode and stable Li-interface induced by the introduction of HA-SiO in PVDF-based electrolytes for solid-state lithium metal batteries.
J Colloid Interface Sci
December 2024
Department of Physics, Nanchang University, Nanchang 330031, China. Electronic address:
Polyvinylidene fluoride (PVDF) materials have been widely investigated as polymer matrix for solid polymer electrolytes (SPEs) due to their high dielectric constant, electroactive effect (piezo-, pyro-, and ferroelectricity), and excellent thermal stability. However, the poor interface compatibility caused by highly reactive residual solvents and unsatisfactory ionic conductivity owing to sluggish Li transport kinetics are principal bottlenecks impeding the further development of PVDF-based electrolytes. Herein, we design a PVDF-based electrolytes with the assistance of hydrophilic-amorphous silica (HA-SiO).
View Article and Find Full Text PDFRGS22 maintains the physiological function of ependymal cells to prevent hydrocephalus.
Sci China Life Sci
October 2024
Nanhu Laboratory, National Center of Biomedical Analysis, Beijing, 100039, China.
Ependymal cells line the wall of cerebral ventricles and ensure the unidirectional cerebrospinal fluid (CSF) flow by beating their motile cilia coordinately. The ependymal denudation or ciliary dysfunction causes hydrocephalus. Here, we report that the deficiency of regulator of G-protein signaling 22 (RGS22) results in severe congenital hydrocephalus in both mice and rats.
View Article and Find Full Text PDFResponse of sulfate concentration to eutrophication on spatio-temporal scale in freshwater lakes.
Sci Total Environ
November 2024
School of Environment, Nanjing Normal University, Nanjing 210023, China.
Article Synopsis
- - The study investigates the impact of increased sulfate (SO₄) concentrations in eutrophic lakes, revealing that exogenous sulfur input primarily drives these increases, with notable fluctuations in water and sediment concentrations recorded across multiple lakes and over time.
- - Eutrophication, exacerbated by nutrient input like nitrogen and phosphorus, destabilizes the sulfur cycle, leading to a significant increase in SO concentrations, particularly in sediments, which positively correlate with the trophic lake index (TLI).
- - Experiments indicate that the anaerobic conditions created by cyanobacteria decomposition facilitate sulfate reduction and significantly affect SO levels, highlighting the complex interplay between eutrophication and sulfur dynamics in freshwater ecosystems.
Assessing thallium phycoremediation by applying and and exploring its effect on cellular growth, antioxidant, and metabolic profile.
Int J Phytoremediation
October 2024
Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt.
Thallium (Tl), a key element in high-tech industries, is recognized as a priority pollutant by the US EPA and EC. Tl accumulation threatens aquatic ecosystems. Despite its toxicity, little is known about its impact on cyanobacteria.
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