Consideration on Riser Shape of Escalator Step

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On the Convergence of the Escalator Boxcar Train

The Escalator Boxcar Train (EBT) is a numerical method that is widely used in theoretical biology to investigate the dynamics of physiologically structured population models, i.e., models in which individuals differ by size or other physiological characteristics. The method was developed more than two decades ago, but has so far resisted attempts to give a formal proof of convergence. Using a m...

Simulation of rockfall trajectories with consideration of rock shape

The aim of the paper is to develop a fully 3D simulation technique for rockfall dynamics taking rock shape into account and using the state-of-the-art methods of multibody dynamics and nonsmooth contact dynamics. The rockfall simulation technique is based on the nonsmooth contact dynamics method with hard contact laws. The rock is modeled as an arbitrary convex polyhedron and the terrain model ...

single-step synthesis of multi-component spirobarbiturates using ionic liquids and synthesis of substituted pyridine filled with catalysts supported on solid substrate

in this thesis, a better reaction conditions for the synthesis of spirobarbiturates catalyzed by task-specific ionic liquid (2-hydroxy-n-(2-hydroxyethyl)-n,n-dimethylethanaminium formate), calcium hypochlorite ca(ocl)2 or n-bromosuccinimide (nbs) in the presence of water at room temperature by ultrasonic technique is provided. the design and synthesis of spirocycles is a challenging task becaus...

Escalator-related injuries in children.

OBJECTIVE Escalator-related trauma is uncommon but can cause significant injury. This study reviewed escalator-related injuries in children to determine risk factors, types of injuries, medical interventions, and long-term outcomes. DESIGN AND SETTING Retrospective clinical patient series, Municipal Hospital Pediatric Emergency Service. Participants. All children less than 18 years of age who...