Silicotungstenic acid (STA)-containing mesoporous materials were directly synthesized in a nonaqueous medium by sol-gel method. X-ray powder diffraction showed that both as-synthesized and calcined materials possess mesoporous structure. STA contents in extraction solutions were analyzed with inductively coupled plasma. When STA/silica ratio changed from 1:100 to 1:4, the immobilization of STA ...

Kachanov’s simplifiedmodel ofmicrocrack interaction is applied to an investigationof the behaviour of a cracked body under predominantly compressive periodic loading, so that the cracks experience periods of closure and slip, with frictional dissipation. The model is shown to be equivalent to a discrete elastic frictional systemwith each crack representing one node. Theorems and algorithms from...

Suday, Sptem er 5, 2016 grant R01 GM087609 (to Dr. H. Peter Lorenz), a gift from Ingrid Lai and Bill Shu in honor of Anthony Shu (to Dr. H. Peter Lorenz), Hagey Laboratory for Pediatric Regenerative Medicine and The Oak Foundation (to Drs. Geoffrey C. Gurtner, H. Peter Lorenz, and Michael T. Longaker), Gunn/Olivier fund (to Drs. Irving L. Weissman and Michael T. Longaker), and NIH grant U01 HL0...