X-ray CT Survey for Cultural Properties

Crcpd Survey of X-ray Ct Screening

1. The state regulates x-ray CT scanners Directly [i.e. identified as CT]? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CA . . FL . . GA . . . . . . . IL . . . . . . . . . . . . . LA . MD . . . . . . . . . . . MS . MO NE . . NJ . . OR . . PA . . . . . . . UT . WV Indirectly [as a radiation machine] . . . . . . . . . . . . . . . . . . . . . . AL . . . . . . . . . . . . . . . . . . I...

Empirical correlation for porosity deduction from X-ray computed tomography (CT)

For obtaining reservoir petrophysical properties, for example porosity, non-destructive methods such as X-ray computed tomography, CT, seems to be precise and accurate. Porosity is deducted from the CT image with a single scan via different techniques, such as pore space detection by image segmentation techniques then correlation with porosity. More than one hundred samples with carbonate li...

The Swift Bat X-ray Survey. Iii. X-ray Spectra and Statistical Properties

In this concluding part of the series of three papers dedicated to the Swift BAT hard X-ray survey (BXS), we focus on the X-ray spectral analysis and statistical properties of the source sample. Using a dedicated method to extract time-averaged spectra of BAT sources, we show that Galactic sources have, generally, softer spectra than extragalactic objects and that Seyfert 2 galaxies are harder ...

Galactic X-ray Survey

We review highlights of the results obtained from recent Galactic X-ray survey observations, in particular ASCA Galactic center and plane survey and our Chandra deep survey on the (l, b) ≈ (28. ◦5, 0. ◦0) region. Strong hard X-ray diffuse components are observed from Galactic ridge, center and bulge, and they have both thermal and non-thermal spectral components. Dozens of discrete and extended...

Artifacts in X-ray CT