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The Mediating Role of Gut Microbiota on the Association Between Dietary Quality and Cancer-Related Fatigue Among Breast Cancer Patients: A Cross-Sectional Study.
Nutrients
December 2024
Wuxi School of Medicine, Jiangnan University, Wuxi 214122, China.
Objectives: Cancer-related fatigue (CRF) is highly prevalent in patients with breast cancer, resulting in undesirable outcomes and even reduced survival rates. This cross-sectional study investigated the relationship between dietary quality and CRF in patients with breast cancer, and the potential role of gut microbiota (GM) in this association.
Methods: Dietary intake and CRF were evaluated in 342 patients, with 64 fecal samples collected for 16sRNA sequencing and 106 plasma samples for tryptophan (TRP) metabolite determination.
Research on the Influence of Liquid Metal Embrittlement Cracks on the Strength and Fatigue Life of Spot-Welded Joints of Galvanized Q&P980 Steel.
Materials (Basel)
December 2024
Materials Bigdata and Applications Division, Materials Academy Jitri, Suzhou 215131, China.
Galvanized high-strength steel has emerged as a key focus in automotive lightweighting research. During resistance spot welding of galvanized steel, the phenomenon of liquid metal embrittlement (LME) can occur, which is characterized by the appearance of irregular cracks on the weld spot surface. However, the impact of LME cracks on the mechanical properties of joints remains unclear.
View Article and Find Full Text PDFThe Biomechanics of Nickel Titanium Instrument Fracture in Root Canal Therapy: A Narrative Review.
Materials (Basel)
December 2024
School of Dentistry, The University of Queensland, Herston, QLD 4006, Australia.
The use of motorized nickel titanium instruments is an essential component in contemporaneous clinical endodontics. The mechanical properties of nickel titanium are optimal for the cleaning and shaping of root canal systems. However, instrumentation carries risks, particularly instrument fracture, which may become an obstacle to achieving adequate disinfection of the canal system.
View Article and Find Full Text PDFAnomalies in Long-Crack Propagation at Low ΔK in Some Engineering Alloys.
Materials (Basel)
December 2024
TDA Inc., Falls Church, VA 22043, USA.
In this article, we discuss an unusual pattern in long-crack behavior at low stress intensity factor ranges ΔK (below ΔK), characterized by an initial dip, followed by a plateau, and then an acceleration in fatigue crack growth (FCG) rate. This unanticipated FCG behavior was first observed experimentally in the IMI 834 alloy and reported by Marci in 1996. Such an anomaly is only reported from experimental observation but cannot be understood or explained using the plasticity, roughness, or oxide-induced crack closure assumptions.
View Article and Find Full Text PDFEffects of Oral Ingestion of L-Ornithine on Mental Stress and Fatigue Based on the Trier Social Stress Test in Healthy Humans: A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Trial.
J Clin Med
December 2024
Institute of Health Sciences, Kirin Holdings Company, Limited, Shonan Health Innovation Park 26-1-12-12 Muraoka-Higashi 2-chome, Fujisawa 251-8555, Japan.
With changes in the social environment typified by COVID-19, an increasing number of people are suffering from mental stress in interpersonal relationships and the resulting fatigue in recent years. L-ornithine oral ingestion reportedly suppresses the secretion of cortisol, a stress marker, through the hypothalamic-pituitary-adrenal (HPA) axis. However, there is insufficient research to determine whether L-ornithine exerts an ameliorative effect on social stress.
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