The need to keep long wind musical instruments compact imposes the bending of portions of the air column. Although manufacturers and players mention its effects as being significant, the curvature is generally not included in physical models and only a few studies, in only simplified cases, attempted to evaluate its influence. The aim of the study is to quantify the influence of the curvature b...

In free bending process, the axis shape of bent tube is determined by motion trajectory die. The tubes with different radii and directions can be formed continuously adjusting position posture To accurately form pre-designed tube, formation mechanism arc in process was analyzed. mathematical model between radius deviation established moving direction die also according to plane space azimuth wh...

It consists of a (i) glass tube about \ inch in cross section and 8 inches to 9 inches in length slightly bent at a distance of about 1 inch from one open end. This end of the tube is closed by a piece of thin rubber (which may be made from a piece of torn rubber glove) which is stretched and fastened tight with silk thread at the bend of the tube. (?) Swab?a piece of stout copper wire and a pi...

provided the original work is properly cited. CC Bronchial blockers are simple alternative methods of facilitating placement of devices for one-lung ventilation. The Coopdech bronchial blocker (Daiken Medical, Osaka, Japan) has been clinically introduced to perform one-lung ventilation with a single-lumen tracheal tube [1]. The distal tip of the Coopdech bronchial blocker has a pre-formed angul...

Coriolis flowmeters have been widely employed in a variety of industrial applications. There is potential that the measuring tube flowmeter may be eroded when it used to measure abrasive fluid such as slurry flow. However, challenging verify structural health without process interruptions or using on-site calibration devices meter provers. This article presents an situ health-monitoring techniq...

This paper presents the development and experimental validation of a multi-hazard bridge pier concept, i.e., a bridge pier system capable of providing an adequate level of protection against collapse under seismic and blast loading. A multi-column pier-bent with concrete-filled steel tube (CFST) columns is the proposed concept, and the adequacy of this system is experimentally and analytically ...

A flexible distal tip with two degrees of freedom has been developed for endoscopic robot surgery. The flexible tip consists of a superelastic NiTi tube which can be bent from -90o to +90o in 2 directions by means of 4 cables. The improvement over previous devices is the combination of two degrees of freedom with a small diameter of only 5 mm. An additional advantage is the tool channel which e...

The physical model designed by Umeda and Teranishi simulating an arbitrary shape of the human vocal tract was a straight tube with a set of plastic plates inserted from one side. Although this model has the advantage that users can configure any shape of the vocal tract, manually manipulating several plates simultaneously is difficult. In this study, we present two models extending Umeda and Te...

Vertical compact torus injection into the STOR-M tokamak has been conducted with the University of Saskatchewan Compact Torus Injector (USCTI). The injector stayed at the horizontal position and the CT was bent by 90 using a curved conducting drift tube. The curved drift tube did not have significant effects on the CT velocity. Furthermore, the curved drift tube did not change the magnetic fiel...