the chemical extraction of twenty-nine elements in a washing aggregate sludge, a clay-richsediment, a sewage sludge, the mixtures of these materials and the artificial lightweight aggregates (lwas)manufactured with them was determined by applying the optimized european community bureau of reference sequential extraction procedure in order to establish the effect of the thermal treatment on the ...

Due to the high strength-to-weight ratio of fibre reinforced polymers (FRPs), human-induced vibration problematic remains as a subject be fully comprehended in order extend use composites Bridge Engineering. Thus, this paper studies an ultra-lightweight FRP footbridge, which presents excessive vertical vibrations when fourth harmonic walking pedestrian is synchronised with structure’s fundament...

Much of the work reported in the first three DSVIS conferences has concentrated on techniques and languages for specifying and developing interactive systems. In this paper, we argue that a change of emphasis may be necessary as the field matures. We argue that real projects with specific objectives for formal methods are more likely to employ a range of diverse, lightweight modelling technique...

Abstract The shell structure design of modern spacecraft internal devices is developing towards lightweight, high-performance, and low-cost. In order to achieve a lightweight construction the structure, this work takes as an optimization object. Under premise ensuring that stiffness box meets requirements, adopts post-design method. First, preliminary model was conducted using SolidWorks, then ...