Spacecraft are exposed to severe mechanical loads, i.e., shock during their journey orbit. Such loads usually develop due a separation event through the activation of pyrotechnic devices. They might be transmitted throughout entire structure and strongly influence service performance electronic components. Therefore, it is crucial study whether instruments can resist such harsh environment. How...

This report is an update of the review for ramp-based baggage handling related literature undertaken in 2005 (Tapley and Riley, 2005). The aim of this review is to present information relating to alternative methods of loading narrow-bodied aircraft that reduce the manual handling related injury and ill-health risks to the handlers, and to identify knowledge gaps. This was used to inform subseq...

Lubrication is widely used to reduce wear of wheel and rail profiles by decreasing the friction between flange rail. The effects lubrication on dynamic response were investigated in this study, analysing responses adjoining bearing housing. experiments conducted a 1/3rd scale twin disc rig, with single disc, which can have various speeds, loads creepage. First, theoretical modal parameters calc...

The aim of the present study was to evaluate the influence of the Ramadan intermittent fast (RIF) on aerobic and anaerobic exercise performance in elite judo athletes (Judokas) maintaining their usual training loads. Physical performance tests (squat jump [SJ]), countermovement jump [CMJ], 30-second repeated jump, 30-m sprint, and the multistage fitness test) and fatigue scores were measured in...

This paper presents a feed forward back-propagation neural network model to estimate the vertical deformation of high-density polyethylene (HDPE) small diameter flexible pipes buried in reinforced trenches and settlement of soil surface (SSS) subjected to repeated loadings to simulate the heavy vehicle loads. The experimental data show that the vertical diametral strain (VDS) of pipe embedded i...

The article discusses the hypotheses for determining equivalent laboratory modes assessing durability of sealing and awning materials, evaluates accuracy proposed method. Qualitative research operational factors influence (UV, temperature) on materials was conducted. Purpose study: a method predicting materials. Methods: Methods fast assessment methods factors. Results: Based obtained regularit...

This paper experimentally investigates the behavior of a non-prismatic concrete frame using different types under static and repeated loads. The parametric study includes changing type (conventional concrete, steel fiber reactive powder (SF-RPC) glass (GF-RPC)) loading (static repeated). results were presented discussed effect SF-RPC GF-RPC on behavior, compared with conventional through first ...

amir kabir dam was built in varian strait, at 23 km north of karaj in 1961. the dam is multipurpose and its maim aims are the spring floods control, supplying potable water for tehran city, producing electricity and providing irrigation water. different pollutants which discharge to the river finally enter to the dam reservoir. determining the pollution loads of the dam sub-catchments can help ...