B4C–Al2O3 composite powder was produced by aluminothermic reduction in Al/B2O3/C system. In this research, microwave heating technique was used to synthesize desired composite. The ball milling of powder mixtures was performed in order to study the effect of mechanical activation on the synthesis process. The synthesis mechanism in this system was investigated by examining the correspondi...

External installation of steel braces is an effective approach to increase the lateral load resistance moment-resisting frames. However, effects existence on robustness frames resist progressive collapse still not clear because little study has been carried out. To fill this gap, in paper, six multistory subframes (three bare and three braced frames) were fabricated tested. Test results indicat...

BACKGROUND The Lyon brace is commonly prescribed in many European countries to patients with thoracic curves and is based on the three-point pressure system. The purpose of this study was to evaluate the efficacy of Lyon bracing for the conservative treatment of adolescent females with idiopathic thoracic curves in a case series selected on the basis of the Scoliosis Research Society (SRS) Comm...

The seismic-resistant structure is required for the earthquake-hazard area. One of systems Concentrically Braced Frame (CBF), which was established to diminish seismic damage. At time implementation, CBF reduces horizontal deformations building so that failure as well heavy damage can be avoided. In CBF, brace energy dissipator, whose performance needs enhanced. This study discussed structural ...

1 During gait, the trunk and neck are believed to play an important role in dissipating the transmission 2 of forces from the ground to the head. This attenuation process is important to ensure head control is 3 maintained. The aim of the current study was to assess the impact of externally restricting the motion of 4 the trunk and/or neck segments on acceleration patterns of the upper body and...

Abstract This research investigates the impact of thermal loads on reinforced concrete (RC) buildings in Saudi Arabia and how they behave sloped terrain. The study analyzed effects different types support systems (hinged fixed supports) strengthening (with without bracings) using software ETABS-V20. Ground + 9 typical floors frame RC models terrain subjected to seismic were used for investigati...

various aldoximes and ketoximes synthesis of corresponding aldehydes and ketones in the presence of sio2@feso4 nano composite as recoverable nano catalyst and nh2oh·hcl. the sio2@feso4 nano composite system was carried out between 10 to 15 min in oil bath (70-80 °c) under solvent-free condition in excellent yields in addition this protocol can be used for industrial scales. this method offers s...