Results 11 to 20 of about 376,488 (285)

X-ray computed tomography [PDF]

open access: yesNature Reviews Methods Primers, 2021
X-ray computed tomography (CT) can reveal the internal details of objects in three dimensions non-destructively. In this Primer, we outline the basic principles of CT and describe the ways in which a CT scan can be acquired using X-ray tubes and synchrotron sources, including the different possible contrast modes that can be exploited.
Phil Withers   +2 more
exaly   +7 more sources

X-ray induced acoustic computed tomography [PDF]

open access: yesPhotoacoustics, 2020
X-ray imaging has proved invaluable in medical diagnoses and non-destructive testing (NDT) in the past century. However, there remain two major limitations: radiation harm and inaccessibility to the sample.
P. Samant, L. Trevisi, X. Ji, L. Xiang
doaj   +5 more sources

Interlaced X-ray diffraction computed tomography [PDF]

open access: yesJournal of Applied Crystallography, 2016
An X-ray diffraction computed tomography data-collection strategy that allows, post experiment, a choice between temporal and spatial resolution is reported. This strategy enables time-resolved studies on comparatively short timescales, or alternatively allows for improved spatial resolution if the system under study, or components within it, appear to
Vamvakeros, A   +6 more
openaire   +7 more sources

Multi-Mounted X-Ray Computed Tomography. [PDF]

open access: yesPLoS ONE, 2016
Most existing X-ray computed tomography (CT) techniques work in single-mounted mode and need to scan the inspected objects one by one. It is time-consuming and not acceptable for the inspection in a large scale.
Jian Fu, Zhenzhong Liu, Jingzheng Wang
doaj   +4 more sources

High-energy synchrotron X-ray multimodal computed tomography: enabling multiscale materials characterization at NSLS-II [PDF]

open access: yesJournal of Synchrotron Radiation
We report the commissioning of a multimodal computed tomography experimental setup at the 28-ID-2 (XPD) beamline of the National Synchrotron Light Source II.
Mehmet Topsakal   +6 more
doaj   +2 more sources

In situ 3D characterization of fatigue cracks displacement fields [PDF]

open access: yesFracture and Structural Integrity, 2013
The three dimensional growth of fatigue cracks in samples of nodular graphite cast iron is characterized using laboratory X-ray computed tomography. The cracks grow from laser machined artificial defects, their development is monitored in situ using ...
Joel Lachambre   +3 more
doaj   +6 more sources

Effects of X-Ray Dose On Rhizosphere Studies Using X-Ray Computed Tomography. [PDF]

open access: yesPLoS ONE, 2013
X-ray Computed Tomography (CT) is a non-destructive imaging technique originally designed for diagnostic medicine, which was adopted for rhizosphere and soil science applications in the early 1980s.
Susan Zappala   +7 more
doaj   +6 more sources

Segmentation of pores in carbon fiber reinforced polymers using the U-Net convolutional neural network

open access: yesActa Polytechnica CTU Proceedings, 2023
This study demonstrates the utilization of deep learning techniques for binary semantic segmentation of pores in carbon fiber reinforced polymers (CFRP) using X-ray computed tomography (XCT) datasets.
Miroslav Yosifov   +6 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

Reexamination of the mandibular and dental morphology of the Early Jurassic mammaliaform Hadrocodium wui [PDF]

open access: yesActa Palaeontologica Polonica, 2022
CT visualization of the mandible and dentition of Hadrocodium wui, a stem mammaliaform from the Lower Jurassic Lower Lufeng Formation of Yunnan, China has revealed new features not accessible by previous microscopic study of the fossil.
ZHE-XI LUO   +4 more
doaj   +1 more source

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