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Geochemical signatures and nanomechanical properties of echinoid tests from nearshore habitats of Florida: environmental and physiological controls on echinoid biomineralization.
PeerJ
January 2025
Florida Museum of Natural History, University of Florida, Gainesville, FL, United States of America.
The mechanisms that regulate minor and trace element biomineralization in the echinoid skeleton can be primarily controlled biologically (, by the organism and its vital effects) or by extrinsic environmental factors. Assessing the relative role of those controls is essential for understanding echinoid biomineralization, taphonomy, diagenesis, and their potential as geochemical archives. In this study, we (1) contrast geochemical signatures of specimens collected across multiple taxa and environmental settings to assess the effects of environmental and physiological factors on skeletal biomineralogy; and (2) analyze the nanomechanical properties of the echinoid skeleton to assess potential linkages between magnesium/calcium (Mg/Ca) ratios and skeletal nanohardness.
View Article and Find Full Text PDFAltitude-Driven Variations in Nutritional, Bioactive, and Mineral Profiles of Hawthorn ( spp.).
Foods
January 2025
Institute of Food and Nutrition Development, Ministry of Agriculture and Rural Affairs, Beijing 100081, China.
Hawthorn ( spp.), a plant widely distributed in temperate and subtropical regions, is valued for its bioactive compounds and diverse health benefits. Known for its remarkable adaptability to various environmental conditions, hawthorn thrives across different altitudes, but these environmental factors, particularly altitude, significantly influence the accumulation of its bioactive substances.
View Article and Find Full Text PDFImpact of Ce Doping on the Relaxor Behavior and Electrical Properties of SrBaNbO Ferroelectric Ceramics.
Materials (Basel)
December 2024
School of Physics and Electronic Information, Yan'an University, Yan'an 716000, China.
In this work, the rare earth element Ce was incorporated into the A-site of SrBaNbO ferroelectric ceramics, which was prepared using the conventional solid state reaction method and sintered under different procedures. A comprehensive investigation was conducted to assess the impact of Ce doping and varying sintering procedures on both the relaxor characteristics and electrical properties of the ceramics. When sintered at 1300 °C for 4 h, the grains exhibited an isometric shape.
View Article and Find Full Text PDFEffect of Sr on Mechanical Properties and Corrosion Behavior of Rolled ZM60 Alloy.
Materials (Basel)
December 2024
School of Materials Science and Engineering, Jiamusi University, Jiamusi 154000, China.
Mg-6Zn-0.5Mn as a medical magnesium alloy has good biomechanical properties and corrosion resistance, but as a fracture internal-fixation material, its strength, toughness, and corrosion resistance still need to be improved. In this paper, the element Sr, having good biocompatibility, is used as an alloy element.
View Article and Find Full Text PDFBone regeneration in sheep model induced by strontium-containing mesoporous bioactive glasses.
Biomater Adv
December 2024
Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina, Instituto de Salud Carlos III, 28040 Madrid, Spain. Electronic address:
Local delivery of therapeutic ions from bioactive mesoporous glasses (MBGs) is postulated as one of the most promising strategies for regenerative therapy of critical bone defects. Among these ions, Sr cation has been widely considered for this purpose as part of the composition of MBGs. MBGs of chemical composition 75SiO-25-x CaO-5PO-xSrO with x = 0, 2.
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