Abstract Safety standards for domestic trampolines are based on static-load testing using a factor of five times the maximum intended user mass. This paper presents dynamic test method trampolines, and provides measures users’ performance (e.g., peak acceleration, Acc max ) injury risk mean rate change Jerk ). Uniform masses (41–116 kg) were dropped from 0.66 m onto bed centre nineteen differen...

The case is presented of a 12-year old boy who sustained severe penetrating ocular trauma while playing on a domestic trampoline. A main spring broke under tension and the hook had struck the eye at high velocity and penetrated the sclera. Primary repair was undertaken but on review it became apparent the eye could not be salvaged. Evisceration was carried out and an orbital implant was placed....

BACKGROUND Current protocols recommend the use of a blunt needle to access the arteriovenous fistula via a buttonhole. This study aims to demonstrate whether a sharp needle can be used at the same buttonhole site without causing complications. GOAL To measure and compare fistula cannulation failures between the use of blunt and sharp needles. PLAN: Open-crossover randomised controlled trial. ...

The mechanism of negative thermal expansion (NTE) in MOF-5 has been studied using a rigid unit mode analysis of the phonons responsible for NTE. In addition to confirming the role of the previously proposed optic 'trampoline mode' mechanism [Lock et al., Dalton Trans., 2013, 42, 1933-2320], we have identified a new acoustic mode mechanism that makes a major contribution to the macroscopic NTE o...

Nanoelectromechanical (NEMS) resonators are promising uncooled thermal infrared (IR) detectors to overcome existing sensitivity limits. Here, we investigated NEMS trampoline made of silicon nitride (SiN) as IR detectors. Trampolines have an enhanced responsivity more than two orders magnitude compared state-of-the-art SiN drums. The characterized yield a in terms noise equivalent power (NEP) 7 ...

1. Overview This paper talk about that NP is not AL=P by using circular founded set. I make set structure of CHAOS and computation history of Turing Machine. CHAOS is circular founded set and computation history of Turing Machine is well founded set. And Log space ATM can not compute CHAOS. 2. Computational problem as set In this paper, we think computational problem as set of related problems ...