51 research outputs found
Combinations of School-Based Primary and Secondary Preventive Dental Programs in the United States and Other Countries
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/65940/1/j.1752-7325.1979.tb02953.x.pd
Labor and delivery service use: indigenous women’s preference and the health sector response in the Chiapas Highlands of Mexico
Corrosion behaviour of porous Ti intended for biomedical applications
Porous Ti implants are being developed inorder to reduce the biomechanical mismatch between theimplant and the bone, as well as increasing the osseointegrationby improving the bone in-growth. Most of the focusin the literature has been on the structural, biological andmechanical characterization of porous Ti whereas there islimited information on the electrochemical characterization.Therefore, the present work aims to study the corrosionbehaviour of porous Ti having 30 and 50 % ofnominal porosity, produced by powder metallurgy routeusing the space holder technique. The percentage, size anddistribution of the pores were determined by image analysis.Electrochemical tests consisting of potentiodynamicpolarization and electrochemical impedance spectroscopywere performed in 9 g/L NaCl solution at body temperature.Electrochemical studies revealed that samples presenteda less stable oxide film at increased porosity, morespecifically, the complex geometry and the interconnectivityof the pores resulted in formation of less protectiveoxide film in the pores.This study was supported by FCT with the
reference project UID/EEA/04436/2013, by FEDER funds through
the COMPETE 2020 – Programa Operacional Competitividade e
Internacionalizac¸a˜o (POCI) with the reference project POCI-01-0145-
FEDER-006941, Programa de Acc¸o˜es Universita´rias Integradas LusoFrancesas’
(PAUILF TC-12_14), and The Calouste Gulbenkian
Foundation through ‘‘Programa de Mobilidade Acade´mica para Professores’’.
The authors would also like to acknowledge Prof. Ana
Senos (University of Aveiro) and Prof. Jose´ Carlos Teixeira
(University of Minho) for the provision of the characterization
facilities.info:eu-repo/semantics/publishedVersio
First Ever Flight Demonstration of Zero Propellant Maneuver(TM) Attitute Control Concept
Nordic pulse oximetry screening – implementation status and proposal for uniform guidelines
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