Results 21 to 30 of about 491,746 (343)

Exploration of the X-ray Dark-Field Signal in Mineral Building Materials

open access: yesJournal of Imaging, 2022
Mineral building materials suffer from weathering processes such as salt efflorescence, freeze–thaw cycling, and microbial colonization. All of these processes are linked to water (liquid and vapor) in the pore space. The degree of damage following these
Benjamin K. Blykers   +7 more
doaj   +1 more source

Quantitative X-ray tomography [PDF]

open access: yesInternational Materials Reviews, 2013
X-ray computer tomography (CT) is fast becoming an accepted tool within the materials science community for the acquisition of 3D images. Here the authors review the current state of the art as CT transforms from a qualitative diagnostic tool to a quantitative one. Our review considers first the image acquisition process, including the use of iterative
Maire, E, Withers, PJ
openaire   +1 more source

Impact of intradialytic fiber clotting on dialyzer extraction and solute removal: a randomized cross-over study

open access: yesScientific Reports, 2022
Previous studies revealed the importance of biocompatibility, anticoagulation strategy, and dialysis mode and duration on fiber blocking at the end of a hemodialysis session.
Floris Vanommeslaeghe   +4 more
doaj   +1 more source

Human Occupation of the North American Colorado Plateau ∼37,000 Years Ago

open access: yesFrontiers in Ecology and Evolution, 2022
Calibrating human population dispersals across Earth’s surface is fundamental to assessing rates and timing of anthropogenic impacts and distinguishing ecological phenomena influenced by humans from those that were not.
Timothy B. Rowe   +9 more
doaj   +1 more source

Multi-frame DVC for temporal image sequences

open access: yesFrontiers in Materials, 2022
Digital volume correlation (DVC) is a 3D image-based technique for displacement and strain computation. Traditionally, both (digital image correlation) DIC and DVC are methods based on two individual time frames; the estimation of the displacement and ...
Zaira Manigrasso   +12 more
doaj   +1 more source

Ultra-high speed X-ray imaging of dynamic fracturing in cementitious materials under impact [PDF]

open access: yesEPJ Web of Conferences, 2021
In this work the dynamic fracturing of an ultra-high strength cementitious material is probed with in-situ ultra-high speed X-ray phase-contrast diagnostics to investigate the phenomenology of dynamic fracture.
Lukić Bratislav   +9 more
doaj   +1 more source

X-ray micro computed-tomography [PDF]

open access: yesCurrent Biology, 2017
Emily Baird and Gavin Taylor describe how you can make three-dimensional models of biological samples using x-ray micro-computed tomography.
Emily, Baird, Gavin, Taylor
openaire   +2 more sources

Full Field X-Ray Scatter Tomography

open access: yesIEEE Transactions on Medical Imaging, 2022
11 pages, 6 figures, Accepted for publication in IEEE Transactions on Medical ...
Gary Ruben   +10 more
openaire   +4 more sources

Tunable X-ray dark-field imaging for sub-resolution feature size quantification in porous media

open access: yesScientific Reports, 2021
X-ray computed micro-tomography typically involves a trade-off between sample size and resolution, complicating the study at a micrometer scale of representative volumes of materials with broad feature size distributions (e.g. natural stones). X-ray dark-
Benjamin K. Blykers   +8 more
doaj   +1 more source

A CASE STUDY OF COPPER-ARSENIC EWER FROM THE EGYPTIAN MUSEUM IN CAIRO, EGYPT [PDF]

open access: yesJournal of the General Union of Arab Archaeologists, 2018
(En) This paper presents an analytical study and treatment of an Arsenical Copper ewer from old kingdom stored in the Egyptian Museum in Cairo. Examination and analysis were carried out by using optical microscopy (OM), metallographic microscopy and ...
Abeer Ibrahim, Manal Maher
doaj   +1 more source

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