OBJECTIVE To statistically analyze the results obtained from biomechanical tests on fixation of femoral neck fractures of Pauwels III type, in synthetic bone, using the dynamic hip system with an anti-rotation screw, versus a control group. METHODS Ten synthetic bones from a Brazilian manufacturer (model C1010) were used and divided into two groups: test and control. In the test group, fixati...

Abstract Ebstein’s anomaly is a rare congenital malformation of the right ventricle and tricuspid valve which characterized by several features that can exhibit an infinite spectrum malformation. The abnormalities include: i) adherence leaflets to underlying myocardium (failure delamination); ii) anterior apical rotational displacement functional annulus (septal > posterior leaflet); iii) di...

The fluid flow in the runner of a hydraulic turbine has serious uncertainties. sealing failure magnetorheological (MR) device main shaft hydroturbine, caused by sudden change speed, always been difficult topic to research. This study first derives MR seal pressure and unbalanced curl equations hydroturbine shaft, then analyzes friction heat under different rotational speed mutation conditions t...

PURPOSE Patients with neuro-orthopaedic disorders often develop hip flexion contractures or rotational hip deformities. Increasing deformities impair the already diminished walking abilities and proximal femoral osteotomies are often performed to maintain/improve walking abilities. Fixation of the osteotomies with condylar plates has been successfully used but does often not allow immediate pos...

This study examines manufacturer' perceptions of task and emotional conflict in domestic channels of distribution. Both are expected to depend on three antecedents (centralization, esprit de corps, and communication barriers) and to affect performance relative to competitors and manufacturer's satisfaction directly and indirectly through strategy quality. The results support a positive link bet...

Abstract Loosening of threaded fasteners is a key failure mode, which mainly caused by the slippage and friction behaviors on thread bearing surfaces, will affect integrity reliability products. Numerous scholars have conducted research loosening fasteners; however, comprehensive reviews been scarce. In this review article, we define as loss preload divide it into non-rotational rotational loos...

This special issue of The European Journal of Control is dedicated to some of the results of the European Community Esprit LTR Project VHS Veri cation of Hybrid Systems It consists of papers dealing with various aspects of one of the case studies treated in the project the Experimental Batch Plant at the university of Dortmund Before presenting the papers themselves it is worthwhile to say some...