background and aims. at present, cone beam computed tomography (cbct) has become a substitute for computed tomography (ct) in dental procedures. the metallic materials used in dentistry can produce artifacts due to the beam hardening phenomenon. these artifacts decrease the quality of images. in the present study, the number of artifacts as a result of beam hardening in the images of dental imp...

It is believed that the Yılanlı (or Leylekli) Bridge (bridge with stork or snake figures) in Tokat, a city high seismicity, was built during Roman Byzantine period. Although no structural damage found on bridge, which still open to pedestrian traffic, it very important determine seismic behaviour of bridge considering possible earthquakes structure will be exposed. This article presents respons...

Based on practical engineering, considering the characteristics of unsymmetrical loading, shallow burying, and weak surrounding rock tunnel, MIDAS finite element software is adopted to analyze influence effect deformation a temporary steel support when tunnel excavated by two-step center diaphragm method (CDM). The simulation results are compared with field monitoring results. It can be seen th...

Conventional metal curtain walls have used aluminum frames to support the fireproof boards of spandrels. Since melts at about 660°C, board may fall off in event a fire, causing fire spread upper floors. Therefore, we developed wall supported by frame, and confirmed its performance (prevention falling off) for 2 hours experiments. We also composite insulated steel beams columns using these board...