Objective. The aim of this study was to evaluate the physicochemical properties and bioactivity of two formulations of calcium silicate-based cements containing additives (CSCM) or resin (CSCR), associated with radiopacifying agents zirconium oxide (ZrO2) and niobium oxide (Nb2O5) as micro- and nanoparticles; calcium tungstate (CaWO4); and bismuth oxide (Bi2O3). MTA Angelus was used as control....

From Our Lady of Lourdes Hospital, Drogheda, Ireland Implant-associated infection is a major source of morbidity in orthopaedic surgery. There has been extensive research into the development of materials that prevent biofilm formation, and hence, reduce the risk of infection. Silver nanoparticle technology is receiving much interest in the field of orthopaedics for its antimicrobial properties...

The aim of this research is to study Ni2+ supported on hydroxyapatite-core-shell magnetic γ-Fe2O3 nanoparticles (γ-Fe2O3@HAp-Ni2+) as a green and recyclable catalyst for the Biginelli reaction under solvent-free conditions. One-pot multi-component condensation of 1,3-dicarbonyl compounds, urea and aldehydes at 80 oC affords the corresponding compounds in high yields and in short reaction times ...

Cracks that occur over time are difficult to detect and repair, they threaten the safety durability of buildings limit sustainable building design. This study investigates feasibility using hydroxyapatite (HAp) with graphene oxide silver nanoparticles self-heal narrow cracks detect. Ultrasonic pulse velocity, compressive strength, portlandite content, percentage water absorption porosity recove...

Engineered nano particles may have a variety of effects on plant systems which is not well studied as yet. We have studied for the first time the beneficial effect of hydroxyapatite (HAP) nanorod on seed germination and growth of chickpea plant.  HAP nanorods have been synthesized by sol gel technique and then characterized.  Chickpea plants have been allowed to germinate and grow in sterile sa...

The present work features some simple methods of preparing pure hydroxyapatite nanoparticles (nano-HAp), a useful biomaterial, via various wet chemical and using biogenic sources such as eggshells animal bone. nano-HAp hence prepared was subsequently characterized by FTIR spectroscopy XRD technique. spectra confirmed the presence PO43- OH- ions major functional groups in material, with addition...