Results 221 to 230 of about 1,953,363 (269)

Study of void space structure and its influence on carbonate reservoir properties: X-ray microtomography, electron microscopy, and well testing

Marine and Petroleum Geology, 2023
D. Martyushev, I. Ponomareva, A. S. Chukhlov, S. Davoodi, B. Osovetsky, K. P. Kazymov, Yongfei Yang   +6 more
semanticscholar   +1 more source

X-ray microtomography: past and present

SPIE Proceedings, 2008
The way in which microtomography developed in the authors' laboratory in the early 1980s is described, together with some background material. Later developments in scanning geometries and detectors, mainly in other laboratories, are described. Some present problems and possible future directions will be considered.
J. C. Elliott, G. R. Davis, S. D. Dover
openaire   +1 more source

Cone-beam X-ray Microtomography

1994
Studies of three-dimensional microstructures in opaque specimens have been a problem in both biological and material sciences. Because of the relatively small absorption cross section for X-rays even for optically opaque materials, X-ray microscopy and microtomography is a useful method for revealing internal microstructure (Cheng and Jan, 1987; Cheng ...
Ge Wang, Tein-Hsiang Lin, Douglus M. Shinozaki, Hyo-gun Kim, Ping-chin Cheng   +4 more
openaire   +1 more source

Development of Quantitative X-Ray Microtomography

MRS Proceedings, 1990
ABSTRACTWe have developed several x-ray microtomography systems which function as quantitative three dimensional x-ray microscopes. In this paper we describe the evolutionary path followed from making the first high resolution experimental microscopes to later generations which can be routinely used for investigating materials.
H. W. Deckman, J. H. Dunsmuir, K. L. D'Amico, S. R. Ferguson, B. P. Flannery   +4 more
openaire   +1 more source

X-ray energy optimisation in computed microtomography

Physics in Medicine and Biology, 1989
Expressions describing the absorbed dose and the number of incident photons necessary for the detection of a contrasting detail in x-ray transmission CT imaging of a circular phantom are derived as functions of the linear attenuation coefficients of the materials comprising the object and the detail.
openaire   +2 more sources

X-ray fluorescence and X-ray transmission microtomography imaging system

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2007
Abstract An X-ray Transmission Microtomography (CT) system combined with an X-ray Fluorescence Microtomography (XRFCT) system was implemented in the Brazilian Synchrotron Light Source (LNLS), Campinas, Brazil. The main aim of this work is to determine the elemental and absorption distribution map in breast tissue samples.
Gabriela R. Pereira, Henrique S. Rocha, Marcelino J. Anjos, Paulo Faria, Carlos A. Pérez, Ricardo T. Lopes   +5 more
openaire   +1 more source

X-ray Microtomography with Synchrotron Radiation

SPIE Proceedings, 1986
High resolution x-ray microtomography has been established at the synchrotron radiation source at Daresbury Laboratory, U.K. A high precision mechanical stage with two translational and one rotational degree of freedom has been constructed, and fully characterised by mechanical metrology; overall precision is better than 0.5 μm.
D. K. Bowen, J. S. Elliott, S. R. Stock, S. D. Dover   +3 more
openaire   +1 more source

Chapter 8 X-ray microtomography

1996
Publisher Summary A Synchrotron radiation-computerized tomography (SR-CT) developed for high spatial resolution and elemental analysis of industrial materials—that is, microtomography, has been reported. This is followed by similar CT scanners, so that currently an SR-CT of 10 μm spatial resolution has been realized.
openaire   +1 more source

X-ray microtomography

Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology, 1997
Stephanie E.P Dowker, Graham R Davis, James C Elliott   +2 more
openaire   +1 more source

X-RAY COMPUTED MICROTOMOGRAPHY OF RUBBER

Rubber Chemistry and Technology, 2012
ABSTRACT In rubber science, X-ray computed microtomography (micro CT) is becoming an increasingly used technique to characterize 3D microstructures. As a first step, experimental methods, limitations, and data analysis are described. A review of published micro CT studies for rubber is reported.
openaire   +1 more source