نتایج جستجو برای: micro porosity

تعداد نتایج: 131968  

Journal: :Journal of the mechanical behavior of biomedical materials 2017
Nathan T Evans F Brennan Torstrick David L Safranski Robert E Guldberg Ken Gall

Surface porous polyether-ether-ketone has the ability to maintain the tensile monotonic and cyclic strength necessary for many load bearing orthopedic applications while providing a surface that facilitates bone ingrowth; however, the relevant deformation behavior of the pore architecture in response to various loading conditions is not yet fully characterized or understood. The focus of this s...

2016
Thafar Almela Ian M. Brook Keyvan Moharamzadeh

Tissue engineering of bone and oral mucosa have been extensively studied independently. The aim of this study was to develop and investigate a novel combination of bone and oral mucosa in a single 3D in vitro composite tissue mimicking the natural structure of alveolar bone with an overlying oral mucosa. Rat osteosarcoma (ROS) cells were seeded into a hydroxyapatite/tri-calcium phosphate scaffo...

2014
A. Guadagnini B. Bijeljic

We analyze statistical scaling of structural attributes of two millimeter scale rock samples, Estaillades limestone and Bentheimer sandstone. The two samples have different connected porosities and pore structures. The pore-space geometry of each sample is reconstructed via X-ray micro-tomography at micrometer resolution. Directional distributions of porosity and specific surface area (SSA), wh...

Journal: :Journal of endodontics 2014
Fatima B Basturk Mohammad Hossein Nekoofar Mahir Gunday Paul M Dummer

INTRODUCTION The aim of this study was to evaluate the effect of mechanical and manual mixing as well as the effect of ultrasonic agitation during placement on the flexural strength and porosity of mineral trioxide aggregate (MTA). METHODS White ProRoot MTA and white MTA Angelus were used. One gram of each powder was mixed with a 0.34-g aliquot of distilled water. Specimens were mixed either ...

ژورنال: علوم آب و خاک 2013

The objective of this study was to evaluate the effects of crop residues management on soil physical and biological properties. The impacts of residue management on yield of forage corn and barley and soil micro-organisms population were also studied. The results showed that application of crop residues increased soil organic matter (22.2 %), saturated hydraulic conductivity (51.9 %), porosity ...

Journal: :Jordan Journal of Civil Engineering 2023

Pervious concrete is a developing construction material used for sustainable solutions which helps restore the groundwater level based on its draining ability. The existing research studies address strength and permeability of pervious-concrete materials only limited data available microstructural characteristics pervious concrete. In this study, characteristic analysis was carried out at micro...

2015
Omar Alageel Mohamed-Nur Abdallah Eric Caron Faleh Tamimi

Removable partial dentures (RPD) are traditionally made of casted alloys using the lostwax technique. Laser-sintering is a new additive manufacturing technique for processing RPD metal frameworks that can produce RPDs frameworks quickly with high precision and at low cost. The objective of this study was to characterize the mechanical, crystallographic, and biocompatibility properties of RPD Co...

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