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London dispersion forces and steric effects within nanocomposites tune interaction energies and chain conformation.
Commun Chem
January 2025
Institute of Physics, Albert-Ludwig-University of Freiburg, Freiburg, Germany.
The interplay between attractive London dispersion forces and steric effects due to repulsive forces resulting from the Pauli principle often determines the geometry and stability of nanostructures. Aromatic polyimides (PI) and carbon nanotubes (CNT) were chosen as building blocks as two components in the hetero delocalized electron nanostructures. Two PIs, having the same diamine part and different linkage substituents between two phenyl rings of dianhydride part, one linked with ether bond (C-O-C) (OPI), the other with C-(CF3)2 (FPI), were investigated.
View Article and Find Full Text PDFCardiovascular disease attenuates the protective effect of folate on global cognitive function in an elderly population: a cross-sectional study.
Sci Rep
January 2025
Department of Cardiovascular, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, No. 24, Jinghua Road, Jianxi District, Luoyang, Henan Province, China.
Research suggests that folic acid contributes to improving cognitive function. However, there is a lack of systematic research on the association of dietary intake of folate and serum, and red blood cell (RBC) folate levels with global cognitive impairment (CoI) in the elderly population. Importantly, excessive supplementation with folate among American adults at high risk of cardiovascular disease (CVD) may have harmful effects.
View Article and Find Full Text PDFThe Application of Voice Biomarkers in Frailty: A Scoping Review.
J Voice
January 2025
School of Nursing, Peking University, Beijing 100191, China. Electronic address:
Background: With an increasing prevalence of frailty among older adults, effective classification and management strategies for frailty have become imperative. Voice biomarkers, offering insights into the overall health status of older adults, hold promise for enhancing the management of this multifaceted geriatric syndrome.
Objectives: This scoping review aims to consolidate existing knowledge regarding the relationship between frailty and voice biomarkers.
Aims: Long-term exposure to fine particulate matter (PM) is causally associated with mortality and cardiovascular disease. However, in terms of cardiovascular cause-specific outcomes, there are fewer studies about stroke than about coronary heart disease, particularly in Asia. Furthermore, there remains uncertainty regarding the PM-respiratory disease association.
View Article and Find Full Text PDFA Bitter Pill: The Ethics of Involuntary Treatment of Adolescents With Severe Eating Disorders.
Hosp Pediatr
January 2025
Departments of Medicine and Ethics, University of Vermont Medical Center, Burlington, Vermont.
Severe eating disorders (EDs) are a common and increasing threat to normal adolescent health and development. Major clinical challenges include longstanding malnutrition potentially complicated by emergent electrolyte disorders and cardiac dysfunction. The care of adolescents with severe EDs can lead to challenging decisions regarding the initiation of involuntary feeding with restraints.
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