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Gold nanoparticles and induction of structural alteration and enhanced oxidative stress in rat lens.
Food Chem Toxicol
January 2025
Department of Histology, Kasr Al-ainy Faculty of Medicine, Cairo University, Egypt. Electronic address:
There is an emerging wide use of nanotechnology in the medical fields. The information regarding distribution and clearance of gold nanoparticles (AuNPs) in the ocular tissue is insufficient. We investigated the cumulative effect of AuNPs on rat lens structure and their effect on the redox state and aquaporin-0 (AQP0) expression.
View Article and Find Full Text PDFObesity and hypoxia have differential effects on myocardial innervation in the right ventricle of the male mouse heart.
J Anat
January 2025
Hannover Medical School, Institute of Functional and Applied Anatomy, Hannover, Germany.
Obesity, along with hypoxia, is known to be a risk factor for pulmonary hypertension (PH), which can lead to right ventricular hypertrophy and eventually heart failure. Both obesity and PH influence the autonomic nervous system (ANS), potentially aggravating changes in the right ventricle (RV). This study investigates the combined effects of obesity and hypoxia on the autonomic innervation of the RV in a mouse model.
View Article and Find Full Text PDFEvaluating Cost-effectiveness and Mixing Efficacy for Elastomeric and Temporary Restorative Material Using Two Mixing Tips: A SEM-EDS Analysis.
J Contemp Dent Pract
September 2024
Department of Prosthodontics and Crown & Bridge, Bharati Vidyapeeth Deemed to be University, Dental College and Hospital, Pune, Maharashtra, India, ORCID: https://orcid.org/0009-0008-7338-1699.
Aim: This study aimed to compare the mixing efficacy and cost-effectiveness of new T-mixer tips against the standard double helical tips for a light-body elastomeric impression and a temporary/interim restorative material using a scanning electron microscope (SEM) and energy-dispersive X-ray spectroscopy.
Methodology: Automixed samples ( = 16) were divided into four groups of four samples each: Samples that were mixed with Helical tip for elastomer, T-mixer tip for elastomer, Helical tip for interim restorative material, and T-mixer tip for interim restorative material. These samples were then evaluated for SEM analysis.
Basic properties of solidified organic liquids at a cryogenic temperature for electron microscopic visualization and sample preparation of dispersion systems.
Microscopy (Oxf)
December 2024
Institute for Extra-cutting-edge Science and Technology Avant-garde Research (X-star), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2-15 Natsushima-cho, Yokosuka, Kanagawa 237-0061, Japan.
It is challenging to image structures in liquids for electron microscopy (EM); thus, low-temperature imaging has been developed, initially for aqueous systems. Organic liquids (OLs) are widely used as dispersants, although their cryogenic EM (cryo-EM) imaging is less common than that of aqueous systems. This is because the basic properties (e.
View Article and Find Full Text PDFStudy of the spatial strength distribution patterns and microstructure characteristics of ultra-fine tailings cemented paste backfill.
Sci Rep
January 2025
State Key Laboratory of High-Efficient Mining and Safety of Metal Mines of Ministry of Education, University of Science and Technology Beijing, Beijing, 100083, China.
In this study, the spatial distribution of the mechanical strength of ultra-fine tailings cemented paste backfill (UCPB) in underground stopes was examined, and the micro-mechanism responsible for differences in spatial strength performance via changes in particle deposition was elucidated. To better understand this phenomenon, we constructed a similar backfilling stope model using the ultra-fine tailings of a gold mine. We manufactured specimens at different spatial locations and conducted a novel series of tests, including uniaxial compressive strength, shear strength, and conventional triaxial tests, to obtain the strength parameters in different spatial distributions.
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