Results 21 to 30 of about 2,340,427 (274)

X-ray Microtomography to Quantify Morphological Sandstones Properties [PDF]

open access: yesBrazilian Archives of Biology and Technology, 2019
The sandstones of the Furnas Formation in the State of Paraná, south of Brazil, are located in regions with great importance due to the natural heritage found in the rocky forms and associated flora and fauna.
Luiz Fernando Pires   +4 more
doaj   +1 more source

Catastrophic Failure: How and When? Insights From 4‐D In Situ X‐ray Microtomography

open access: yesJournal of Geophysical Research: Solid Earth, 2020
Catastrophic failure of brittle rocks is important in managing risk associated with system‐sized material failure. Such failure is caused by nucleation, growth, and coalescence of microcracks that spontaneously self‐organize along localized damage zones ...
A. Cartwright-Taylor   +5 more
semanticscholar   +1 more source

Evaluation of the conventional and synchrotron X-ray tomography applied to heterogeneous oil reservoir rocks

open access: yesBrazilian Journal of Radiation Sciences, 2019
Carbonate and sandstone reservoirs play an important role in oil industry as they host over 50% of the world’s hydrocarbon reserves. For an accurately assessment of porosity and pore size distribution of such complex pore-network, which affect directly ...
Guilherme José Ramos   +8 more
doaj   +1 more source

Combination of Imaging Infrared Spectroscopy and X-ray Computed Microtomography for the Investigation of Bio-and Physicochemical processes in Structured Soils [PDF]

open access: yes, 2020
Soil is a heterogeneous mixture of various organic and inorganic parent materials. Major soil functions are driven by their quality, quantity and spatial arrangement, resulting in soil structure.
Kögel-Knabner, Ingrid   +4 more
core   +1 more source

Semiconductors (LEDs) quality control based in high-resolution 3D X-ray microscope

open access: yesBrazilian Journal of Radiation Sciences, 2022
Electronic devices are getting smaller each time and the technology, increasingly complex. Commonly found problems such as reflow soldering and open solder connections, which are mostly difficult to detect by conventional means like X-ray images or ...
Diogo da Costa   +5 more
doaj   +1 more source

A rationale for the influence of grain size on failure of magnesium alloy AZ31: An in situ X-ray microtomography study

open access: yes, 2020
The present study employs in situ X-ray microtomography to characterize the impact of grain size on void nucleation, growth and linkage during tensile loading of magnesium alloy AZ31.
S. H. M. Azghandi   +5 more
semanticscholar   +1 more source

X-ray Microscopy and Microtomography [PDF]

open access: yesSynchrotron Radiation News, 2013
It has been almost a decade since the first special issue on X-ray microscopy, organized by Gunter Schmahl (SRN, Vol. 16, No. 3, 2003). That was a time of rapid expansion of scanning X-ray microscopes (STXM) and transmission microscopes (TXM). The special issue included articles on soft X-ray microscopes at BESSYII, ALS, NSLS, Aarhus, Ritsumeikan ...
Chapman, Henry   +2 more
openaire   +2 more sources

Microstructural characterization of a Canadian oil sand [PDF]

open access: yes, 2012
The microstructure of oil sand samples extracted at a depth of 75 m from the estuarine Middle McMurray formation (Alberta, Canada) has been investigated by using high resolution 3D X-Ray microtomography ($\mu$CT) and Cryo Scanning Electron Microscopy ...
Delage, Pierre   +4 more
core   +5 more sources

A low-cost X-ray-transparent experimental cell for synchrotron-based X-ray microtomography studies under geological reservoir conditions [PDF]

open access: yes, 2013
A new modular X-ray-transparent experimental cell enables tomographic investigations of fluid rock interaction under natural reservoir conditions (confining pressure up to 20 MPa, pore fluid pressure up to 15 MPa, temperature ranging from 296 to 473 K ...
Butler, Ian   +6 more
core   +1 more source

Phase-contrast X-ray microtomography of mouse fetus

open access: yesBiology Open, 2012
Summary A phase-contrast X-ray microtomography system using the Talbot imaging has been built at the SPring-8 synchrotron radiation facility. This system has much higher density resolution than absorption-based X-ray microtomography.
Masato Hoshino   +2 more
doaj   +1 more source

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