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Shear band in sand with spatially varying density
Bifurcation Digital Image Correlation Heterogeneous sand Shear band Strain localization
2015/7/1
Bifurcation theory is often used to investigate the inception of a shear band in a homogeneously deforming body. The theory predicts conjugate shear bands that have the same likelihood of triggering. ...
Structural Fe3+ in Natural Kaolinites: New Insights from Electron Paramagnetic Resonance Spectra Fitting at X and Q-Band Frequencies
Dickite Disorder EPR Fe3+ Kaolinite
1999/10/1
Abstract: Structural Fe3+ in kaolinites and dickites covering a broad range of disorder was investigated using electron paramagnetic resonance (EPR) spectroscopy at both the X and Q-band frequencies. ...
Optical band gaps of selected ternary sulfide minerals
Optical band gaps ternary sulfide minerals
1998/7/30
Optical band gaps for a set of 23 ternary and quaternary sulfide minerals have been measured by diffuse reflectance spectroscopy. Comparison of band gaps measured by dif-fuse reflectance with band gap...
The Near-Infrared Combination Band Frequencies of Dioctahedral Smectites, Micas, and Illites
Al content Dioctahedral smectites Micas NIR spectra
1993/12/1
The highest frequency near-infrared (NIR) combination bands for specimens of four species of mica—montmorillonite-beidellite, illite, chlorite, and kaolinite—were correlated with respect to Al2O3 cont...
X-ray Diffraction Band Profiles of Montmorillonite—Influence of Hydration and of the Exchangeable Cations
X-ray Diffraction Band Profiles Montmorillonite Hydration
1967/11/1
Previous studies of diffraction band profiles of montmorillonite are extended to the 13, 20 band which, for reasons discussed, is more sensitive to structural details than the diffraction bands consid...