We study the instantaneous Stokes flow near the apex of a corner of angle 2a formed by two plane stress free surfaces. The fluid is under the action of gravity with gW parallel to the bisecting plane, and surface tension is neglected. For 2a.126.28°, the dominant term of the solution as the distance r to the apex tends to zero does not depend on gravity and has the character of a self-similar s...

Elytra in beetles move actively, driven by their own muscles, only during transient opening and closing. The kinematics of these movements have been inadequately described, sometimes controversially. Our goal was a quantitative 3-D description of diverse active movements of the elytra, in terms of directions of the axes of elytra rotation. Broad opening and closing was video recorded in beetles...

PURPOSE The aim of this study was to establish reference values for segmental myocardial strain measured by magnetic resonance (MR) cardiac tagging in order to characterize the regional function of the heart. MATERIAL AND METHODS We characterized the left ventricular (LV) systolic deformation in 39 subjects (26 women and 13 men, age 58.8 ± 11.6 years) whose cardiological study had not reveale...

BACKGROUND To date, only plain radiographic definitions of normal anatomical parameters have been described. Our study aims to describe normal anatomic measurements of small and ring metacarpals using a novel digital reconstruction technique based on raw CT image data. We hypothesize that current plain radiographic data incorrectly describes normal metacarpal anatomy in the lateral plane. MET...

introduction: the purpose of this clinical study was to compare the accuracy of working length (wl) determination using cone-beam computed tomography (cbct), conventional periapical radiographies and electronic apex locator. methods and materials: this study was conducted during root canal treatment of 19 patients with a total of 30 single-rooted teeth diagnosed with apical periodontitis. after...

ABSTRACT Objective To evaluate the mandibular alveolar bone thickness in untreated skeletal Class I subjects with different vertical patterns. Materials and Methods A total of 50 preorthodontic treatment cone-beam computed tomography (CBCT) images a Chinese population near-normal occlusion were selected. The buccal lingual thicknesses canines to second molars measured at 2 mm below cementoename...