Pediatric Dentistry – 21:2, 1999 The loss or congenital absence of permanent anterior teeth in young patients has significant psychological ramifications. 2 Typically, adolescent patients are acutely aware of their appearance and its importance in selfimage and social acceptance. Although a variety of treatment approaches are available to provide esthetic replacement of missing anterior permane...

Recently, the serious problems facing heavy industries such as the increase in the average age of employees, shortage of skilled workers and environmental problems in the workplace are being addressed. The bridge panel fabrication system we have developed is such an approach to solve these problems. It consists of two parallel box girder panel sub-assembly lines, one exclusively for web panels ...

Continuous rigid frame bridge is a common type of bridge in California, where is a seismically active areas. Main structural features of the bridge, including asymmetry, hinge structure, concretion of girder and piers affect the seismic response of the bridge significantly. In order to evaluate the safety of the bridge under earthquake, the nonlinear models of girder, limiting steels in hinge, ...

This paper investigates a seismic retrofit technique that allows bridge steel truss piers to uplift and rock on their foundation. Displacement-based passive energy dissipation devices buckling-restrained braces, or BRBs are implemented at the uplifting location to control the rocking response while providing additional energy dissipation. The hysteretic behavior of the controlled rocking system...

microalloyed s355n steel plates are extensively used in bridge and high-rise building structures. one ofthe factors affecting the mechanical properties is the size and morphology of inclusions. in this research,microalloyed s355n steel plates with different sizes of inclusions were examined. one contained longmanganese sulfide inclusions (li material) and the other had short ones (si material)....

Abstract Many bridges in Slovakia are reaching their designed life span these days. Due to frequent errors during the construction of those as well bad maintenance, steel‐concrete now a critical state and urgent repairs structures needed. In this article progressive methods retrofitting existing concrete shown. presented method, original pillars bridge deck will remain place, on new composite, ...