Background: Low back pain is often caused by the degeneration of intervertebral disc. Cigarette smoking has been found to be related disturbance disc function. This study aimed evaluate type II collagen expression in after cigarette smoke exposure with an experimental using male wistar rats. Methods: research was post-test only group design conducted January April 2021. The samples were 21 adul...

A full field method for the description of in-plane strain fields is applied for improving Asphalt Mixture cracking behaviour insights. A Digital Image Correlation (DIC) system based on the Least Square Matching technique is used to compute strains and depict crack path in the process from microcrack initiation to failure. A Brazilian test was performed using hole-notched specimens. The test ge...

To study the effects of anisotropy and heterogeneity on shale failure mode tensile strength, Brazilian splitting tests were performed from both directions bedding layer thickness. Layers containing different loading angles thicknesses obtained separately. The results show that, at 0° 90° angles, cracks grow “linearly”; 15°, have “arc type” growth; 30°–75°, shale-splitting displays “broken line”...

Tensile strength is an important control parameter for the design and stability analysis in rock engineering. In order to reveal influence of elastic modulus on tensile test results, Brazilian splitting tests were carried out specimens with different strengths, such as mudstone, white sandstone, green red marble. Longitudinal transverse strains monitored analyze maximum contact angle peak load ...

Finite element modelling of the spinal unit is a promising preclinical tool to assess biomechanical outcome emerging interventions. Currently, most models are calibrated and validated against range motion rarely directly soft-tissue deformation. The aim this contribution was develop an in vitro methodology measure disc bulge ability different specimen-specific approaches predict bulge. Bovine b...

conclusions the results of the present study indicate that brazilian propolis demonstrated in vitro anti-microbial efficacy against s. mutans and c. albicans. results the antimicrobial efficacy of hexidine against s. mutans and e. coli was higher compared to that of c. albicans. the brazilian propolis (p) mr showed antimicrobial action against s. mutans and c. albicans. the antimicrobial effica...

This study reports the enhanced mechanical resistance of composite bioceramics hydroxyapatite (HAP) and tricalcium phosphate (β-TCP) used as bone substitute. HAP/β-TCP mixture was prepared by wet mixing powders characterized. Effects powder manufacturing sintering temperature on densification, microstructure properties were studied. The rupture strength ( σ r ) calculated using Brazilian test. ...