Frame stability in Ilizarov external fixators is mainly dependent on the tension of the transosseous wires, which are clamped to the ring by connection bolts. It was the purpose of this biomechanical study to investigate the holding capacity of a modified bolt design featuring a ruffled wire-bolt interface (TrueLok™) and its influence on wire stiffness in comparison with that of classic bolts f...

Introduction In the distant past large animals were sometimes stunned by a heavy blow on the head where poultry was decapitated before slaughter During the last century concern for animal welfare increased. Concussion stunning was deemed not satisfactory, and improved stunning methods were developed. Stunning by captive bolt was introduced at the end of the 19th century, electrical stunning at ...

A composite biodegradable polymeric model was developed to enhance tendon graft healing. This model included a biodegradable polylactide (PLA) bolt as the bone anchor and a poly(D,L-lactide-co-glycolide) (PLGA) nanofibrous membrane embedded with collagen as a biomimic patch to promote tendon-bone interface integration. Degradation rate and compressive strength of the PLA bolt were measured afte...

Rock slopes have the characteristics of complex geological conditions, weak structural surface development, steep slope, and great damage. In this study, Sujiaba overpass slope in Chongqing was selected as evaluation object, main stability methods rock were analyzed. Combined with special conditions geographical location through a survey, qualitatively analyzed based on stereographic projection...

Rock bursts are a natural phenomenon that caused by high stresses and faults within the deep geological profile. The framework mining excavations, comprising various rock face supports such as cable bolts, is required to withstand bursts. These mechanisms subject static dynamic loading conditions which possess unique challenges. This study focused on shearing impact of loads key structural supp...

Aiming at solving the problem of asymmetric deformation, failure, and stability control surrounding rock caused by excavation deep super large section soft chamber group passing through multilayer strata, taking connected vertical shaft in Wuyang Coal Mine as engineering background, deformation development mode rock, expansion situation loosening range, plastic failure response characteristics ...