forming limit curve (flc) is an important tool for evaluation of formability of sheet metals subjected to different loading. free bulge of aluminume tubes has been investigated numerically to obtain flc. to verify the numerical results one experimental setup has been manufactured which has the ability of controlling the internal pressure and axial feed. in this study, time and zone of bursting ...

BACKGROUND Correct positioning of the endotracheal tube (ETT) during emergent pediatric intubations can be challenging, and incorrect placement may be associated with higher rates of complications. OBJECTIVES The aims of this study are to: 1) assess the prevalence of clinically undetected misplaced ETTs after intubation in the pediatric emergency department; 2) identify predictors of ETT misp...

A schematic view of the furnace used for the CdTe nanowire synthesis by the vapor-liquid-solid (VLS) technique is shown in figure S1. In this system, the carrier gas transports the source material vapors from upstream to downstream in the quartz tube. The CdTe powder (Alfa company, 99.99%), 0.03g for all samples, was placed in a high-purity alumina crucible located at the source position of the...

The i-gel has a thick airway tube and occasionally, achieving the airway can be difficult because of obstruction in the prone position. The authors aimed at solving this problem and used a modified i-gel airway in the prone position for radiotherapy processes in children.

Eustachian tube dysfunction (ETD) is a common condition that lacks a widely accepted treatment. Attempts to address ETD surgically have spanned several centuries and have often fallen short of success. It is probable that occult anatomic position, unclear function, and misunderstood physiology have contributed to the delayed development of effective interventions for ETD. This article traces th...

Direct visualization of the nasopharynx gives the otolaryngologist a unique advantage for addressing difficult nasopharyngeal anatomy. One common situation is being consulted to assist when the blind placement of a nasogastric tube has failed. A novel technique for managing a patient with a nasogastric tube embedded in the adenoid remnant is described with illustrations. The atraumatic method i...

Endotracheal tube (ETT) cuff herniation is not an uncommon event in Intensive Care Units and operating rooms. The cause for this can be displacement of the tube or overinflation of ETT cuff.[1] Usually, it is noticed by the sound of gas leaking around the tube or when there is a fall in tidal volume and end-tidal carbon dioxide (CO2). Confirmation and repositioning of the ETT require direct lar...

a dry syringe. 2 cc. of blood was put into a sterile empty penicillin vial to which .5 cc. of 3.8% sodium citrate solution had already been added. It was immediately mixed thoroughly by rotating the vial. The mixture was then drawn up into a Westergren's standard tube up to zero mark?which is exactly 200 m.m. from the tip. The tube was set up absolutely in a vertical position in a non-vibrating...

The most dreaded complication of tube feedings is tracheobronchial aspiration of gastric contents. Strong evidence indicates that most critically ill tube-fed patients receiving mechanical ventilation aspirate gastric contents at least once during their early days of tube feeding. Those who aspirate frequently are about 4 times more likely to have pneumonia develop than are those who aspirate i...

In this paper, a new type of steel-concrete composite member, concrete-filled core steel tube with outer angle steel plank reinforced concrete stub column, is proposed and a series of nonlinear 3D(three-dimensional) full-range numerical calculations under axial compression are carried out, some important factors are analyzed, such as the strength of the concrete, the steel tube and the angle st...