Association between pulmonary ventilation function and cognitive function among middle-aged and older adults: an observational study from Southwest China.

Background: Despite the significant prevalence of chronic obstructive pulmonary disease (COPD) in Southwest China, cognitive function among middle-aged and elderly individuals in this area surpasses the national average. This study aims to reveal the overall pulmonary ventilation function status of this population, and investigate whether pulmonary ventilation dysfunction is a risk factor for mild cognitive impairment (MCI) in this region, as suggested by previous researches.

Methods: Data were obtained from the 2019-2021 baseline survey of a natural population cohort study conducted in Southwest China.

Structural characterization of two poly-galacturonic acids: the important basis to elucidate spherical conformation of pectin from submicroparticles in chrysanthemum tea infusion.

Pectin exhibits potential as an excellent food additive for its processing properties and biological activities, but its application is hindered because of complex and unclear structure. Water-insoluble and water-soluble poly-galacturonic acids, hydrolyzed from the spherical pectin from submicroparticles in chrysanthemum tea infusion, were characterized for obtaining the detail structural information. The water-insoluble poly-galacturonic acid was a crystal which constructed by hydrogen bonds and long linear chains comprised of α-1,4-glycosidic bonds and galacturonic acid residues.

Construction of a risk prediction model of diquat poisoning based on clinical indicators.

This study aims to explore the clinical characteristics and prognostic factors in patients with diquat (DQ) poisoning and to develop a clinical risk assessment model to improve diagnosis and treatment strategies. Data from 60 patients with DQ poisoning, including basic characteristics, poisoning severity, and inflammatory response indicators, were collected. The plasma concentration of DQ was measured using liquid chromatography-mass spectrometry.

A heterobimetallic MOF as a stable heterogeneous catalyst with high activity for ethylene oligomerization.

Herein, the performance of heterobimetallic clusters MOF-1213(Dy/Ni) for ethylene oligomerization reactions was investigated. At 30 °C and 40 bar, its average ethylene turnover frequency is approximately 160 000 h (α-olefins selectivity above 80%), which was higher than the activity previously reported for most heterogeneous catalysts under similar conditions.

Socio-Demographic Determinant Factors for Serum Iron, Copper, Zinc, and Selenium Concentrations Among U.S. Women of Childbearing Age.

Background: Trace elements (TEs) are essential nutrients for the human body and have a significant impact on fertility and hormone levels in women of reproductive age, underscoring the importance of understanding sociodemographic variations in their concentrations within this population.

Objective: To investigate the socio-demographic factors influencing blood concentrations of four essential TEs, including iron, zinc, copper, and selenium among women of reproductive age.

Methods: A cross-sectional analysis of women aged 20-44 years was performed using the National Health and Nutrition Examination Survey, 1999-2018.