This paper aims to study the mechanical behaviour and failure mechanism of intact rocks under different loading conditions using the grain based model implemented in the universal distinct element code (UDEC). The grain based numerical model is a powerful tool to investigate complicated micro-structural mechanical behaviour of rocks. In the UDEC grain based model, the intact material is simulat...

Nucleate pool boiling at low heat flux is typically characterized by cyclic growth and departure of single vapor bubbles from the heated wall. It has been experimentally observed that the contact angle at the bubble base varies during the ebullition cycle. In the present numerical study, dynamic advancing and receding contact angles obtained from experimental observations are specified at the b...

Introduction: The aim of this study was to investigate the effect of dentinal pretreatment on the static contact angle of a bonding agent as a measure of dentin surface wettability. Materials &Methods: Twenty mid-coronal dentin surfaces were prepared and randomly allocated to four groups (n=5) according to the priming solutions. All segments were etched with 35% phosphoric acid gel for 15 s,...

The theoretical wide-angle model of the human eye and the principle of separation of ophthalmoscopic illumination and observation apertures have been used to design two fundamentally different ophthalmoscopic cameras: a 90 degree wide-angle, noncontact camera and a high-resolution macula-disc camera. The chief advantage of the 90 degree noncontact camera is the increase in contrast achieved by ...

Background: Jumping and landing are common activities in soccer, i.e., associated with Anterior Cruciate Ligament (ACL) injuries in the players, especially when experiencing fatigue. The current study aimed to compare the kinematics of the lower limb joints in jump-landing maneuver among soccer players with and without a history of anterior cruciate ligament reconstruction. Methods: Among acti...

carboxymethyl cellulose (cmc)-polyvinyl alcohol (pvoh) blend film was produced through casting. cellulose nanowhisker (cnw) was produced by means of acid hydrolysis of cotton linter and cmc-pvoh-cellulose nanowhiskers through which fully degradable bionanocomposites were prepared. prepared nanowhisker suspension contained rod like particles averaging lengths of 240 nm and diameters of 13 nm. an...