Two spatial, one axisymmetric and two plane contact problems are considered for a transversely isotropic elastic layer with face subjected to sliding support. In the spatial problems, planes of isotropy may be either parallel or perpendicular faces. case axial symmetry, By using Fourier integral transforms, reduced equations respect pressure, limiting cases which well-known corresponding an lay...

I develop a unified approach for approximating phase and group velocities of qP seismic waves in a transversally isotropic medium with the vertical axis of symmetry (VTI). While the exact phase velocity expressions involve four independent parameters to characterize the elastic medium, the proposed approximate expressions use only three parameters. This makes them more convenient for use in sur...

Objective: The objective of this study is to assess the clinical suitability of a new approach for 3-D imaging and quantification of vaginal tissue elasticity under normal and prolapse conditions. Background: Changes in the elasticity of vaginal walls, connective support tissues and muscles are thought to be significant factors in the development of pelvic organ prolapse. To date, there is no s...

OBJECTIVES Australian Aboriginal children experience earlier, more frequent and more severe otitis media, particularly in remote communities, than non-Aboriginal children. Insertion of ventilation tubes is the main surgical procedure for otitis media. Our aim was to quantify inequalities in ventilation tube insertion (VTI) procedures between Australian Aboriginal and non-Aboriginal children, an...

BACKGROUND The prediction of pulmonary hemodynamic data from non-invasive assessment could exempt some patients with congenital cardiac septal defects from preoperative invasive assessment (catheterization). OBJECTIVE To determine, in simultaneous assessment, whether data obtained from Doppler echocardiography could predict aspects of pulmonary hemodynamics in such patients. METHODS Echocar...

BACKGROUND The use of a single sample volume in Doppler measurements of the velocity time integral (VTI) in the aortic annulus may introduce errors in calculations of stroke volumes, shunts, regurgitant fractions, and aortic valve area. To study the blood flow velocity distribution and assess this potential error, we used a dynamic 3-dimensional color flow Doppler imaging method. METHODS AND ...

This paper develops methods for designing a large class of locally dynamic isotropic modified symmetric Gough-Stewart parallel micromanipulators (MSGSPMs). First, by exploiting rotational symmetric geometry, the concept of dynamic isotropy is proposed and the dynamic isotropy matrix considering the mass geometry characteristics of the payload is constructed symbolically. Next, the singular valu...

BACKGROUND AND OBJECTIVE No consensus has yet been reached with regard to the link between otitis media with effusion (OME), hearing loss, and language development in children with cleft palate. The objective of this study was to address the effectiveness of ventilation tube insertion (VTI) for OME in children with cleft palate. METHODS A dual review process was used to assess eligible studie...

BACKGROUND Aimed to elucidate the characteristics of the spectra of superior venae cavae (SVC) in respiratory cycles in patients with right heart failure. METHODS The spectra of SVC of 30 patients with right heart failure and 30 paired healthy subjects were recorded through right supraclavicular fossa view. The profiles of spectra of superior venae cavae were observed, and peak velocity and v...

Knee articular cartilage exhibits complex mechanical behavior, even under high strain rates, which poses a challenge to developing accurate and efficient cartilage models. In particular, the tissue's stress–strain response is non-linear and the stiffness of the response is location-dependent. Hyperelastic models such as those of Alan Gent and others have increasingly found use in soft tissue bi...