Results 31 to 40 of about 122,201 (309)

Advancing X-ray micro computed tomography in Africa: Going far, together

open access: yesScientific African, 2019
X-ray micro computed tomography (microCT) is a high resolution non-destructive materials imaging technology and is emerging as a powerful tool for industrial and scientific research applications.
Anton du Plessis   +2 more
doaj   +1 more source

Assessment of geometrical characteristics of dental endodontic micro-instruments utilizing X-ray micro computed tomography

open access: yesJournal of Applied Oral Science, 2012
OBJECTIVE: The aim of this study was to quantify the surface area, volume and specific surface area of endodontic files employing quantitative X-ray micro computed tomography (mXCT). MATERIAL AND METHODS: Three sets (six files each) of the Flex-Master Ni-
Youssef S. Al Jabbari   +4 more
doaj   +3 more sources

Analysis of Murine Lung Tumors by Micro PET-CT Imaging

open access: yesBio-Protocol, 2015
Accurate live tumor imaging in mice is now possible by means of high-resolution positron emission tomography (micro-PET) and X-ray computed tomography (micro-CT).
Chiara Ambrogio   +4 more
doaj   +1 more source

X-ray Micro-Tomography as a Method to Distinguish and Characterize Natural and Cultivated Pearls

open access: yesCondensed Matter, 2021
Digital radiography and computed tomography are two fundamental diagnostic techniques in different fields of research, including cultural heritage studies and gemmology.
Luisa Vigorelli   +7 more
doaj   +1 more source

X-ray computed tomography for characterization of expanded polystyrene (EPS) foam [PDF]

open access: yes, 2019
Expanded polystyrene (EPS) foam is widely used in building and construction applications for thermal and acoustic insulation. This material is nearly transparent for X-rays, making it difficult to characterize its pore structure in 3D with X-ray ...
Berger, Sylvain   +7 more
core   +2 more sources

Laser-wakefield accelerators as hard x-ray sources for 3D medical imaging of human bone [PDF]

open access: yes, 2015
A bright μm-sized source of hard synchrotron x-rays (critical energy Ecrit > 30 keV) based on the betatron oscillations of laser wakefield accelerated electrons has been developed.
Abel, RL   +12 more
core   +1 more source

Time-resolved x-ray phase-contrast tomography of sedimenting micro-spheres

open access: yesNew Journal of Physics, 2019
We have implemented a time-dependent (dynamic) x-ray tomography of sedimenting micro-spheres suspended in water. To achieve phase contrast at high magnification we use the divergent and highly coherent beam emitted from an x-ray waveguide.
A Ruhlandt, T Salditt
doaj   +1 more source

Informing quantum materials discovery and synthesis using X-ray micro-computed tomography

open access: yesnpj Quantum Materials, 2022
The presence of inclusions, twinning, and low-angle grain boundaries, demanded to exist by the third law of thermodynamics, drive the behavior of quantum materials.
Lucas A. Pressley   +6 more
doaj   +1 more source

Contributions of X-ray CT to the characterization of natural building stones and their disintegration [PDF]

open access: yes, 2010
This paper highlights the use of the high resolution scanner at the Centre for X-ray Tomography in Ghent, Belgium (UGCT), for the 3D quantitative evaluation of the disintegration of some French natural building stones.
Boone, Marijn   +8 more
core  

Dammarenediol II enhances etoposide‐induced apoptosis by targeting O‐GlcNAc transferase and Akt/GSK3β/mTOR signaling in liver cancer

open access: yesMolecular Oncology, EarlyView.
Etoposide induces DNA damage, activating p53‐dependent apoptosis via caspase‐3/7, which cleaves PARP1. Dammarenediol II enhances this apoptotic pathway by suppressing O‐GlcNAc transferase activity, further decreasing O‐GlcNAcylation. The reduction in O‐GlcNAc levels boosts p53‐driven apoptosis and influences the Akt/GSK3β/mTOR signaling pathway ...
Jaehoon Lee   +8 more
wiley   +1 more source

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