Results 31 to 40 of about 1,787 (235)

HIGUCHI MODEL APPLIED TO IONS RELEASE FROM HYDROXYAPATITES

Studia Universitatis Babes-Bolyai Chemia, 2021
n this study, the ions release of physiological elements from pure stoichiometric hydroxyapatite, HAP, and from multi-substituted hydroxyapatite, ms-HAPs, containing 1.5%Mg, 0.2%Zn, 0.2%Si and 5 %Sr, noted HAPc-5%Sr, and from HAPc-10%Sr, in water and in
Aurora MOCANU, †Petre T. FRANGOPOL, Reka BALINT, Oana CADAR, Iulia Maria VANCEA, Rozalia MINTĂU, Ossi HOROVITZ, Maria TOMOAIA-COTISEL   +7 more
doaj   +1 more source

Raman Microscopy at the Organic–Inorganic Interfaces in Human Calcified Aortic Valves Shows the Co‐Existence of Whitlockite Crystals and Carbonated Hydroxyapatite‐Mineralized Collagen Fibrils

Advanced Functional Materials, EarlyView.
This study advances our understanding of aortic valve stenosis by capturing spatially resolved chemical and structural changes at the nanoscale. The findings highlight the potential of combined Raman and electron microscopy for understanding calcification mechanisms across diverse tissue types.
Robin H. M. Van der Meijden, Carolien T. A Kuster, Amber van Broekhoven, Raphaela Allgayer, Luco Rutten, Rona Roverts, Marta Cerruti, Elena Macías‐Sánchez, Jan Hein Cornel, Salloua el Messaoudi, Anat Akiva, Nico Sommerdijk   +11 more
wiley   +1 more source

Introducing Pure Calcium Orthophosphate Gels and Aerogels

Advanced Functional Materials, EarlyView.
The synthesis of calcium phosphate‐based gels and aerogels is reported, which exhibit highly porous structures built up of networks of nanoparticles. In case of amorphous aerogels, this leads to yet unmatched specific BET surface areas, making these materials especially interesting for biomedical applications.
Oliver Jeske, Dominik Zanker, Nina Ehlert, Bing‐Qiang Lu, Denis Gebauer   +4 more
wiley   +1 more source

Collagen Matrix Combined With Hydroxyapatite and Nasoseptal Flap for Skull Base Reconstruction

Laryngoscope Investigative Otolaryngology
Background Extended endoscopic endonasal transsphenoidal approaches (ExEETSA) commonly result in high‐flow cerebrospinal fluid (CSF) leaks that demand robust reconstruction strategies. Although nasoseptal flap (NSF) is a standard reconstructive technique,
Maithrea Suresh Narayanan, Sung Seok Ryu, Jang Wook Gwak, Young‐Hoon Kim, Ji Heui Kim   +4 more
doaj   +1 more source

Bio‐Inspired Nanoarchitected LiFePO4 Cathodes

Advanced Functional Materials, EarlyView.
Lithium iron phosphate (LFP) is synthesized using a bio‐inspired method, using acidic macromolecules similar to those found in many calcareous mineralized organisms to modulate the morphology and crystal growth of LFP‐carbon composite particles. The observations from this process indicate a non‐classical crystallization process, which subsequently ...
Parawee Pumwongpitak, Ibrahim El‐Halees, Martyn Kim, Andrew Sanchez, Zachery Robinson, Taifeng Wang, Krassimir Bozhilov, Siriporn Larpkiattaworn, David Kisailus   +8 more
wiley   +1 more source

Sorption mechanism of copper ions on synthetic and natural dentine hydroxyapatites

Journal of Materials and Engineering Structures, 2019
Removal of copper ions from aqueous solutions on synthetic and dentine waste hydroxyapatites (HAP) was investigated in batch sorption experiments. Kinetics of sorption followed a pseudo-first order model.
Farida FERNANE, Saliha BOUDIA, Ahmad B. ALBADARIN, Farid AIOUACHE   +3 more
doaj  

New silicate-substituted hydroxyapatite materials doped with silver ions as potential antifungal agents

BMC Microbiology, 2023
Background Hydroxyapatites (HAp) are widely used as medical preparations for e.g., bone replacement or teeth implants. Incorporation of various substrates into HAp structures could enhance its biological properties, like biocompatibility or antimicrobial
Agata Piecuch, Sara Targońska, Justyna Rewak-Sorczyńska, Rafał Ogórek, Rafal J. Wiglusz   +4 more
doaj   +1 more source

Mechanical Properties of Hydroxyapatite Composites Reinforced with Hydroxyapatite Whiskers [PDF]

Key Engineering Materials, 2004
Proceedings of the 8th Conference and Exhibition of the European Ceramic Society; Istanbul; Turkey; 29 June 2003 through 3 July ...
Şimşek, Deniz, Çiftçioğlu, Rukiye, Güden, Mustafa, Çiftçioğlu, Muhsin, Harsa, Hayriye Şebnem   +4 more
openaire   +2 more sources

Structural Porosity and Low Mineral Density in Enamel Rods Drive Molar Incisor Hypomineralisation

Advanced Functional Materials, EarlyView.
This study uses advanced imaging modalities on multiple length scales to show that molar‐incisor hypomineralization does not present as a locally homogeneous pathology. Instead, microstructural defects, characterized through non‐mineralized, protein‐rich sheaths and an altered mineral structure in between prism rods, resulting in local differences in ...
Katharina Jähn‐Rickert, Johannes Krug, Gudrun Lotze, Imke A.K. Fiedler, Diana Freund, Ezgi Deniz Türkoğlu, Christine Plumeyer, Felix N. von Brackel, Anton Davydok, Manfred Burghammer, Thomas Beikler, Thomas F. Keller, Katrin Bekes, Elizabeth A. Zimmermann, Björn Busse   +14 more
wiley   +1 more source

Micro and Nanostructural Diversity of Lizard Osteoderm Capping Tissue in Relation to Mechanical Performance

Advanced Functional Materials, EarlyView.
This study shows that lizard osteoderm capping tissue is a hyper‐mineralized hydroxyapatite layer consistently covering the superficial osteoderm surface in those species studied here, yet it varies greatly in morphology, nanostructure, and mechanical performance across species.
Adrian Rodriguez‐Palomo, Marius Didziokas, Malene Siri Berg Jacobsen, Thorbjørn Erik Køppen Christensen, Innokenty Kantor, Mads Ry Vogel Jørgensen, Klaus Pagh Almtoft, Jesper Skovhus Thomsen, Anthony Herrel, Catherine J.A. Williams, Henrik Birkedal   +10 more
wiley   +1 more source