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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. ...
Properties of Goethites of Varying Crystallinity
Crystallinity Dissolution Goethite Hydrothermal treatment Iron Unit-cell dimension X-ray powder diffraction
2012/2/2
Goethites were synthesized from ferrihydrite in 0.7 M KOH between 4?and 90癈. As temperatures increased, the goethite crystals became larger and of less domainic character, and surface areas decreased ...
Selectivity and Adsorption Capacity of Smectite and Vermiculite for Aluminum of Varying Basicity
Adsorption Aluminum Expansion Smectite Vermiculite
2011/11/18
Smectite (from South Dakota, Wyoming, and Mississippi) and vermiculite (Transvaal) were treated with solutions of Al(OH)B(3−B)+, with B varying from 0 to 2.5. The average basicity (OH/Al = B) of...
An Ultraviolet Spectroscopic Method for Monitoring Surface Acidity of Clay Minerals under Varying Water Content
Monitoring Surface Clay Minerals Varying Water Content
2012/2/15
The ability of a clay mineral surface to function as an acid is not represented by bulk pH measurements. A method using u.v. analysis and organic indicators has been developed to monitor surface acidi...