Fourier-inversion and wavelet-transform methods applied to X-ray reflectometry and HRXRD profiles from complex thin-layered heterostructures

2006 ◽  
Vol 253 (1) ◽  
pp. 133-137 ◽  
Author(s):  
O. Durand ◽  
N. Morizet
Keyword(s):  
Wavelet Transform ◽  
Fourier Inversion ◽  
Transform Methods ◽  
X Ray

X-ray Image Enhancement Based on Wavelet Transform

2008 ◽  
Author(s):  
Jiao Feng ◽  
Naixue Xiong ◽  
Bi Shuoben
Keyword(s):  
Wavelet Transform ◽  
Image Enhancement ◽  
X Ray

Weathering of biotite to vermiculite in Quaternary lahars from Monti Ernici, Central Italy

Clay Minerals ◽  
1992 ◽  
Vol 27 (2) ◽  
pp. 175-184 ◽  
Author(s):  
A. Pozzuoli ◽  
E. Vila ◽  
E. Franco ◽  
A. Ruiz-Amil ◽  
C. De La Calle
Keyword(s):  
Fourier Transform ◽  
Fourier Series ◽  
Central Italy ◽  
Small Samples ◽  
X Ray Diffraction ◽  
Transform Methods ◽  
X Ray ◽  
Type Phase ◽  
Fourier Transform Methods ◽  
End Members

AbstractThe weathering of biotite in Quaternary lahars from Monti Ernici (Central Italy) via interstratification stages has been studied by X-ray diffraction of both the interstratified minerals and the initial (biotite) and final (vermiculite) end-members. The structure of the biotite and vermiculite is described by means of monodimensional Fourier series. The interstratified phases have been studied using the INTER program which permits an analysis of two interstratified components by Fourier transform methods. It is shown that in the alteration range for biotite to vermiculite even small samples have different spatial concentrations of biotite, vermiculite and an intermediate biotite-vermiculite-type phase. Hydrobiotite and a rare biotite-hydrobiotite with a tendency to regularity have also been documented. Chemically, the process involves considerable oxidation of Fe2+ and the removal of most of the elements, corresponding to a 34% loss in matter. The sequence of the element losses is: K+ > Fe2+ > F− > Mn2+ > Si4+ > Mg2+ > Al3+ > Ti4+. There are also some gains in the order: H+ > Ca2+ > Fe3+ > Na+.

Fourier transform methods for studying X-ray scattering from lamellar systems

1959 ◽  
Vol 162 (2) ◽  
pp. 93-100 ◽  
Author(s):  
Douglas M. C. MacEwan ◽  
A. Ruiz Amil
Keyword(s):  
Fourier Transform ◽  
Transform Methods ◽  
X Ray ◽  
X Ray Scattering ◽  
Fourier Transform Methods ◽  
Ray Scattering

Wavelet transform methods for object detection and recovery

1997 ◽  
Vol 6 (5) ◽  
pp. 724-735 ◽  
Author(s):  
R.N. Strickland ◽  
He Il Hahn
Keyword(s):  
Wavelet Transform ◽  
Object Detection ◽  
Transform Methods
Sign in / Sign up

Export Citation Format

Share Document