Results 31 to 40 of about 6,117,689 (215)

Time Resolved Two Dimensional X-Ray Densitometry of a Two Phase Flow Downstream of a Ventilated Cavity [PDF]

open access: yes, 2013
To measure the void fraction distribution in gas-liquid flows, a two-dimensional x-ray densitometry system was developed. This system is capable of acquiring a two-dimensional projection with a 225 cm2 area of measurement through 21 cm of water.
GABILLET, Céline   +8 more
core   +1 more source

Gold Nanoparticles for X-ray Microtomography of Neurons [PDF]

open access: yesACS Chemical Neuroscience, 2019
Commonly used methods to visualize the biological structure of brain tissues at subcellular resolution are confocal microscopy and two-photon microscopy. Both require slicing the sample into sections of a few tens of micrometers. The recent developments in X-ray microtomography enable three-dimensional imaging at sub-micrometer and isotropic resolution
Depannemaecker, Damien   +10 more
openaire   +2 more sources

Micro- and nanostructure of human teeth : a synchrotron radiation-based X-ray study [PDF]

open access: yes, 2014
The anisotropic composite nature of human teeth guarantees their function for decades under high mechanical loads and adverse chemical conditions. Even more so since only marginal remodelling and repair mechanisms take place in adult teeth.
Deyhle, Hans
core   +1 more source

Identification of ginseng root using quantitative X-ray microtomography

open access: yesJournal of Ginseng Research, 2017
Background: The use of X-ray phase-contrast microtomography for the investigation of Chinese medicinal materials is advantageous for its nondestructive, in situ, and three-dimensional quantitative imaging properties.
Linlin Ye   +4 more
doaj   +1 more source

Quantifying Mesoscale Neuroanatomy Using X-Ray Microtomography [PDF]

open access: yeseneuro, 2017
Methods for resolving the three-dimensional (3D) microstructure of the brain typically start by thinly slicing and staining the brain, followed by imaging numerous individual sections with visible light photons or electrons. In contrast, X-rays can be used to image thick samples, providing a rapid approach for producing large 3D brain maps without ...
Eva L. Dyer   +11 more
openaire   +3 more sources

Effect of Glass Fiber Hybridization on the Behavior Under Impact of Woven Carbon Fiber/Epoxy Laminates [PDF]

open access: yes, 2010
The low-velocity impact behavior was studied in hybrid laminates manufactured by RTM with woven carbon and glass (S2) fabrics. Specimens with different thicknesses and glass fiber content (from 0 to 21 vol.%) were tested with impact energies in the range
Enfedaque Díaz, Alejandro
core   +1 more source

X-ray microtomography with monochromatic synchrotron radiation for evaluation of the penetration depth of nanosilver solution in tooth dentin

open access: yesЭндодонтия Today, 2020
The results of measuring the depth of penetration of the ultrasonicated bactericidal solution of nanosilver Poviargrol into Dentinal Tubules of the tooth are presented.

doaj  

X-ray phase-contrast microscopy and microtomography

open access: yesOptics Express, 2003
In-line phase contrast enables weakly absorbing specimens to be imaged successfully with x-rays, and greatly enhances the visibility of fine scale structure in more strongly absorbing specimens. This type of phase contrast requires a spatially coherent beam, a condition that can be met by a microfocus x-ray source. We have developed an x-ray microscope,
S, Mayo   +7 more
openaire   +2 more sources

Ceramic foams porous microstructure characterization by X-ray microtomography

open access: yesMaterials Research, 2004
Knowledge of the porous structure of amorphous materials is of fundamental importance in calculating geometrical parameters such as total porosity, pore size distribution and physical parameters relating to fluid flow inside void space.
Carlos Roberto Appoloni   +3 more
doaj   +1 more source

Porosity Characterization of Iron Ore Pellets by X-Ray Microtomography [PDF]

open access: yesMaterials Research, 2018
This work proposes a three-dimensional methodology to characterize porosity in iron ore pellets by X-ray Microtomography (microCT). An image analysis routine was developed to discriminate and quantify open/closed porosity.
Karen Soares Augusto, Sidnei Paciornik
doaj   +2 more sources

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