OBJECTIVE To investigate cervical spine motion during a log roll technique in ice hockey players under different helmet fit conditions. DESIGN Prospective counterbalanced design. SETTING University research laboratory. PARTICIPANTS Eighteen club ice hockey players were recruited to participate in this study. ASSESSMENT OF RISK FACTORS A standard emergency log roll was performed 3 times ...

The purpose of this study was to determine if there was a difference between the subtalar joint ratio (transverse plane component to frontal plane component) in subjects with overuse symptoms in the foot compared with subjects with overuse symptoms in the leg and knee. Superior and posterior photographs were taken with the subtalar joint in pronation and supination while the subjects were in a ...

the purpose of this study was to evaluate the transverse and vertical dimensions of the palate of children with allergic rhinitis (ar). there was no significant difference for intermolar and intercanine distances between two groups in primary and mixed dentitions. palate depth in children with allergic rhinitis was statistically more than in children without any respiratory disease. cross bite ...

We study the asymptotic proportion of smooth plane curves over a finite field Fq which are tangent to every line defined Fq. This partially answers question raised by Charles Favre. Our techniques include applications Poonen's Bertini theorem and Schrijver's on perfect matchings in regular bipartite graphs. main implies that random curve admits transverse Fq-line with very high probability.

this paper proposed analytical solutions for the buckling analysis of rectangular single-layered graphene sheets under in-plane loading on all edges simply is supported. the characteristic equations of the graphene sheets are derived and the analysis formula is based on the nonlocal mindlin plate. this theory is considering both the small length scale effects and transverse shear deformation ef...

A comparison is established between the contributions of transverse and longitudinal components of both the propagating and the evanescent waves associated to freelypropagating radially-polarized nonparaxial beams. Attention is focused on those fields that remain radially polarized upon propagation. In terms of the plane-wave angular spectrum of these fields, analytical expressions are given fo...

In this paper, exact solution for two-plane transverse vibration analysis of axial-loaded multi-step Timoshenko rotor carrying concentrated masses is presented. Each attached element is considered to have both translational and rotational inertia. Forward and backward frequencies and corresponding modes are obtained using transfer matrix method (TMM). The effect of the angular velocity of spin,...