A young child’s larynx was formerly believed to be narrowest at the cricoid level, circular in section, and funnel shaped. This supported routine use of uncuffed endotracheal tubes children despite benefits cuffed tubes, such as lower risk for air leakage aspiration. In late 1990s, evidence supporting pediatric emerged largely from anesthesiology studies, while some technical flaws remained a...

The behavior of concrete-filled fiber tubes (CFFT) polymers under axial compressive loading was investigated. Unlike the traditional fiber reinforced polymers (FRP) such as carbon, glass, aramid, etc., the FRP tubes in this study were designed using large rupture strains FRP which are made of recycled materials such as plastic bottles; hence, large rupture strain (LRS) FRP composites are enviro...

This report describes the calculation of the reach sets and tubes with hard bounds on the controls and state space variables, with an emphasis on linear nonautonomous systems. The topic is important in the verification of hybrid systems and navigation problems, in set-membership estimation, robust control synthesis and related fields. The suggested scheme for linear systems relies on external a...

In this study, β-Ti3Au lattice structure was proposed for the first time in literature as a filling material to increase energy absorption performance of thin-walled tubes. context, performances conventional (i.e., BCC and FCC) filled tubes novel with were compared experimentally. hybrid, FCC hybrid structures produced by additive manufacturing technology using PA2200 powder crushed evaluated c...

Welding procedures for repairing corroded tubular structures are commonly used; however, composite material repairs becoming popular since they do not use heat sources that might cause accidents. This paper provides a detailed description of the CFRP patch repair application in steel members with circular perforation originated from prolonged corrosion process. The results experimental tests on...

Studies of foam flow in highly permeable porous media are still limited due to foam's complex behavior and discrepancies research. Specifically, it is unclear how flows capillary tubes what the effects material tube diameter are. We have investigated rheology pre-generated tubes. Experiments were carried out using two types tubes: hydrophobic (PTFE – polytetrafluoroethylene; FEP fluorinated eth...