INTRODUCTION In last decade, it has been seen an aging process of world population, due to an increase of life expectancy (SZPALSKI et al., 2003). The aging process is related to a higher rate of spine diseases, such as low back pain. In spite of the high numbers of factors related to development of low back pain and discal hernias. The discal hernias have been pointed as one of the main struct...

SERUM DRAMATICALLY ENHANCES ORIENTATION AND MIGRATION OF CULTURED BOVINE CORNEALEPITHELIAL CELISINANAPPLIEDELECTRICFIELD(RF) ZHAOM’, AGIUS-FERNANDEZ A~,FORRESTERP,McCAIGC’ ‘Department of Biomedical Sciences, Marischal College, ‘Deparz%uvrt of Ophthalmology, University ofAberdeen, Aberdeen AB9 IAS, Scotkmd(X) d Wounded epithelia generate small dc electric fields, whilst many cell types, includin...

Finite element analysis (FEA) was first used in Dentistry in the 70’s to replace photoelasticity tests. Since then, many researches have been developed by association of dentists and engineers, using 2D models. Because of the development of new image acquisition techniques and the development of technical design program the use of 3D models has increased. It is difficult to analyze the mechanic...

Optical metrology provides full field, noncontact, precise measurement of various physical parameters of materials, structures, and devices. These properties include kinematic parameters (displacement, velocity, and acceleration), deformation parameters (strains, curvature, and twist), surface parameters (shape and roughness), and mechanical properties of materials (Young’s modulus, Poisson’s r...

A well-controlled and minimal experimental scheme for dynamic fracture along weak planes is specifically designed for the validation of large-scale simulations using cohesive finite elements. The role of the experiments in the integrated approach is two-fold. On the one hand, careful measurements provide accurate boundary conditions and material parameters for a complete setup of the simulation...

We study the evolution of longitudinal release wave that is generated by induced tensile fracture as it propagates through solid rectangular polymethylmethacrylate (PMMA) bars different constant cross-section. High-speed multi-point photoelasticity used to register strain at three distances from site in each experiment. In all cases, oscillations develop bottom exhibit qualitative features an u...