We provide direct observations of the three-dimensional displacements a fluid-driven fracture during water injections in borehole at ?1.5 km depth crystalline rock Sanford Underground Research Facility (USA). Micro-shearing initiates on foliation plane 61% minimum principal stress ?3. As fluid pressure increases further up to 112% ?3, axial and radial increase with injection time highlighting o...

INTRODUCTION Excessive compressive and shear stresses are likely related to condylar resorption and disc perforation. Few studies have reported the disc displacement and deformation during jaw opening. The aim of this study was to analyze stress distribution in a normal articular disc during the jaw opening movement. METHODS Bilateral MRI images were obtained from the temporomandibular joint ...

The optical methods of Caustics, Photoelasticity and Isopachics for the evaluation of the stress intensity factors and the distribution of the principal stresses at a bi-material interface crack-tip, were proposed. The caustics, isochromatic and isopachic fringes are developed from the stress field which results from a stress function X(r, ). When the crack-tip, which is perpendicular to interf...

This research aims to examine the relationship between hydrothermal alteration and mineralization (ore mineralogy) in study area geological structures deformation mechanism. The was determined based on petrographic analysis, ore mineralogy which microscopic analysis. mechanism is by paleo stress analysis using win-tensor, direction of principal joints/veins faults calculated right-dihedron meth...

Superoxide dismutases (SODs) catalyze the dismutation of superoxide and play an important role in reducing oxidative stress in plants. Based on in-gel SOD activity staining, chloroplasts of the moss Physcomitrella patens have two CuZn-SODs as the major SOD isozymes and minor SODs, including a Fe-SOD and two Mn-SODs. To investigate the contribution of chloroplastic SODs to stress tolerance in P....

A method that uses grain growth direction in electrodeposited copper foil to measure cyclic biaxial stress is examined in this paper. The grain growth direction is measured by image processing software after a cyclic loading test for various biaxial stress ratios is carried out. Since the grain growth occurs in two directions and its directions correspond closely with the direction of maximum s...

To obtain the optimized fuel performance, effects of U-Mo irradiation creep rate coefficient on thermo-mechanical behavior a assembly are investigated. In this study, three cases considered. The distribution and evolution results temperature, displacement, stress/strain foil micro-structure analyzed. simulation indicate that with increase 1) temperature field in changes slightly; 2) maximum out...

Non-carious cervical lesions are characterized by the loss of dental hard tissue at the cement-enamel junction (CEJ). Exceeding stresses are therefore generated in the cervical region of the tooth that cause disruption of the bonds between the hydroxyapatite crystals, leading to crack formation and eventual loss of enamel and the underlying dentine. Damage identification was performed by image ...