BACKGROUND Even if the benefits of collars are unclear, they remain widely used, in several femoral stem designs. This study aimed to determine whether collar size should be proportional to hip dimensions and morphology. The hypothesis was that the collar should be larger for greater stem sizes and for varus femoral necks. METHODS Computed Tomography scans of 204 healthy hips were digitally a...

OBJECTIVES Leisure-time physical activity (PA) has been established to be related to more years lived without disability. However, less is known about the relationship between occupational PA and disability in old age. The aim of the study was 1) to investigate whether midlife occupational PA is related to late-life disability, and 2) to test the hypothesis that the association differs accordin...

BACKGROUND For patients suspicious of cervical spine injury, a Philadelphia cervical collar is usually applied. Application of Philadelphia cervical collar may cause difficult airway. The aim of this study was to evaluate the laryngeal view and the success rate at first intubation attempt of the Airtraq and conventional laryngoscopy in patients with simulated cervical spine injury after applica...

Assembly at the mother-bud neck of a filamentous collar containing five septins (Cdc3, Cdc10, Cdc11, Cdc12, and Shs1) is necessary for proper morphogenesis and cytokinesis. We show that Cdc10 and Cdc12 possess GTPase activity and appropriate mutations in conserved nucleotide-binding residues abrogate GTP binding and/or hydrolysis in vitro. In vivo, mutants unable to bind GTP prevent septin coll...

Topological cospans and their concatenation, by pushout, appear in the theories of tangles, ribbons, cobordisms, etc. Various algebraic invariants have been introduced for their study, which it would be interesting to link with the standard tools of Algebraic Topology, (co)homotopy and (co)homology functors. Here we introduce collarable (and collared) cospans between topological spaces. They ge...

Fluid Flow during the circulation of drilling fluid is an important parameter that affects process successful lifting cuttings activities. Researcher analyzed regimes flow in vertical wells through analysis velocity calculation pipeline at conditions Drillpipe (v DP) 21.11791 fps and drill collar DC) 42.98293 fps, annulus between Casing Drill pipe 1.14993 1.373781 Open Hole pipe, 1.594947 Colla...

The implementation of digital technologies in the context Industry 4.0 radically changes methods production and thereby jobs blue-collar workers. Although work design effects digitalization on operator have been explored existing literature, less is known about simultaneous white-collar underlying (re)design process human including factors that shape this process. To address gap, we performed a...

Due to the importance of Acer monspessulanum in Iranian mountain forests, a study was carried out to reliably estimate its woody biomass and growing volume via allometric equations. Four transects, five trees in each were chosen randomly. The characteristics of standing trees including: diameter at root collar, height, number of stems and crown width were measured, then trees were finally cut d...