نتایج جستجو برای: hydroxyapatite nanoparticles

تعداد نتایج: 116735  

2015
Balazs Farkas Marina Rodio Ilaria Romano Alberto Diaspro Romuald Intartaglia Szabolcs Beke

We report on the optical fabrication approach of preparing free-standing composite thin films of hydroxyapatite (HA) and biodegradable polymers by combining pulsed laser ablation in liquid and mask-projection excimer laser stereolithography (MPExSL). Ligand-free HA nanoparticles were prepared by ultrafast laser ablation of a HA target in a solvent, and then the nanoparticles were dispersed into...

درخشی, منصوره, شاه طهماسبی, ناصر, عربی, هادی,

: Hydroxyapatite (Ca10(PO4)6(OH)2) with the hexagonal crystal structure is the only identifiable mineral phase of bone. In this work, magnesium ferrite-hydroxyapatite nanocomposites were synthesized for the purpose of medical applications. The first step of this work is the synthesis of mesoporous hydroxyapatite nanorods via co-precipitation method in combination with micelles template. Non-ion...

2012
C. Lekakou D. Lamprou U. Vidyarthi E. Karopoulou P. Zhdan

Gelatine gels and gelatine/elastin gels have been prepared to be used in tissue engineered vascular grafts. Optical microscopy and AFM revealed that the gelatine formed nanofibrils as in soft collagen tissues. The gelatine/elastin gels were nanocomposites with flat elastin nanodomains embedded in the gelatine matrix mimicking the structure of the tunica media in arteries. Gelatine/ " hydroxyapa...

2013
Carmen Steluta Ciobanu Simona Liliana Iconaru Mariana Carmen Chifiriuc Adrian Costescu Philippe Le Coustumer Daniela Predoi

The synthesis of nanosized particles of Ag-doped hydroxyapatite with antibacterial properties is of great interest for the development of new biomedical applications. The aim of this study was the evaluation of Ca(10-x)Ag(x)(PO4)6(OH)2 nanoparticles (Ag:HAp-NPs) for their antibacterial and antifungal activity. Resistance to antimicrobial agents by pathogenic bacteria has emerged in the recent y...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1389

here, we report analysis of in vitro and in vivo drug release from an in situ formulation consisting of triamcinolone acetonide (tr) and poly(d,l-lactide-co-glycolide) (plga) and the additives glycofurol and hydroxyapatite nanoparticles (ha). we found that these additives enhanced drug release rate. we used the taguchi method to predict optimum formulation variables to minimise the initial burs...

Journal: :Journal of materials science. Materials in medicine 2012
Miriam Miranda Adolfo Fernández Sonia Lopez-Esteban Francisco Malpartida José S Moya Ramón Torrecillas

Hydroxyapatite/silver nanocomposites have been designed and synthesized as an engineering material for biomedical applications. The hydroxyapatite matrix was synthesized by a sol-gel method and, subsequently, the Ag nanoparticles were deposited by heterogeneous precipitation followed by two different reduction routes: thermal or chemical. Both sets were studied and compared and, in all cases, t...

Hydroxyapatite (HA) is one of the most common biocompatible ceramic with wide usages in various aspects of medicine due to the resemblance to the mineral bone tissue. The particle size of HA has a key roll in determination of the reaction rate at the interface of natural bones/artificial. Accordingly, this paper tries to propose a novel approach for the preparation of HA nanoparticles from natu...

A. Behnamghader M. Rangie M. Shahmohammadi R . Jahandideh,

The aim of this study was to investigate the sol gel synthesis of HA/FA nanoparticles and the possible formation of TCP phase or unstoichiometric calcium deficient hydroxyapatite (CDHA) from the precursors with a Ca/P ratio of 1.62. In order to prepare the sol, the solutions of Triethyl phosphite, ammonium fluoride and calcium nitrate in ethanol were used respectively as P, F and Ca precursors....

Journal: :Chemical communications 2009
Takato Mitsudome Akifumi Noujima Tomoo Mizugaki Koichiro Jitsukawa Kiyotomi Kaneda

Hydroxyapatite-supported gold nanoparticles (AuHAP) can act as highly efficient and reusable catalysts for the oxidation of diverse silanes into silanols in water; this is the first catalytic methodology for the selective synthesis of aliphatic silanols using water under organic-solvent-free conditions.

2017
X. Cui M. A. Green P. J. Blower D. Zhou Y. Yan W. Zhang K. Djanashvili D. Mathe D. S. Veres K. Szigeti

Al(OH)(3) facilitated synthesis of water-soluble, magnetic, radiolabelled and uorescent hydroxyapatite nanoparticles This item was submitted to Loughborough University's Institutional Repository by the/an author.restricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Please cite the published version.

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