This paper presents analytical estimates of the behavior exhibited by curved, archlike structures under radially directed and gravitational line loads. The behavior is shown to range from elementary beam bending at one end to a state of pure compression at the other, and its behavior can be tracked by an arch rise parameter that is a function of the arch’s semivertex angle, radius and thickness...

Marco Polo describes a bridge, stone by stone. “But which is the stone that supports the bridge?” Kublai Khan asks. “The bridge is not supported by one stone or another,” Marco answers, “but by the line of the arch that they form.” Kublai Khan remains silent, reflecting. Then he adds: “Why do you speak to me of the stones? It is only the arch that matters to me.” Polo answers: “Without stones, ...

xpansion of the jaws has been increasingly performed in orthodontics to achieve better occlusal and maxillary relationship, and so, to improve oral functions. Maxillary and mandibular expansion has been E Maxillary and mandibular expansion has been proposed to increase the arch perimeter and to avoid extractions during orthodontic treatment. This paper describes a novel method to produce expans...

Introduction Recurrent or secondary caries develops at the margin of restorations and causes restorative failure. We conducted this study to compare the performance of Phosphor Storage Plate (PSP) and Cone Beam Computed Tomography (CBCT) scan in detecting buccal recurrent caries under amalgam and composite resin restorations. Materials and Methods Class V cavities were prepared on the buccal...

Flowing grains can clog an orifice by developing arches, undesirable event in many cases. Several strategies have been put forward to avoid this. One of them is vibrate the system order undo clogging. Nevertheless, time taken break arch under a constant vibration has distribution displaying heavy tail. This lead situation where average breaking not well defined. Moreover, it observed some exper...

Background: Panoramic radiography creates distortion in teeth position and inclination especially lateral areas of the arches due to acquisition curved shape dental arch. The aim this study was evaluate panoramic compared cone-beam computed tomography. Methods: Mesiodistal angulations were measured on radiography. buccolingual inclinations determined tomography scans. previous measurements then...

Experimental infection of rainbow trout Oncorhynchus mykiss (Walbaum) with the monogenean Discocotyle sagittata (Leuckart, 1842) allowed comparison between trickle and single exposure, two infection modes demonstrated to occur in the wild. Both types of infection resulted in mean larval attachment success around 50%, which was significantly dependent on dose of infective larvae used (P < 0.0001...

BACKGROUND The wearing of personal equipment can cause specific changes in muscle activity and posture. In the present study, we investigated the influence of differences in equipment related weight loading and load distribution on plantar pressure. In addition, we studied functional effects of wearing different equipment with a particular focus on relevant changes in foot shape. METHODS Stat...