BACKGROUND AND PURPOSE Endoscopic lithotripsy is often prolonged secondary to the retrograde migration of calculous fragments. Various balloons, baskets, and other devices have been used to prevent this migration. Our purpose is to analyze the effect of the Accordion(®) on stone migration and overall efficiency during lithotripsy. PATIENTS AND METHODS We prospectively evaluated 21 patients wi...

deterred on this account from reading this remarkable book which gives an entertaining picture of American mental hospital practice. The style is tortuous and ponderous. When the authors want to say there are both male and female patients they write. "Patient status was no respecter of sex" and describe somebody who volunteered to play the accordion thus, "One visitor who played the accordion d...

Nowadays, handheld devices are more and more equipped with functionalities and applications so that they almost serve like a desktop computer. However users find them tedious and tiring to input text due the tiny keys of their virtual keyboard. In this paper, we discuss a new text entry method (3DKey) based on addition of a third dimension to traditional virtual keyboard to overcome the small s...

The Accordion stone management device is a hydrophilic microcatheter-based tool that blocks stone migration. This instrument has been described for use during ureteroscopy to prevent retropulsion of stone fragments. We used this device during percutaneous nephrolithotomy (PCNL) in 30 patients to prevent antegrade migration of stone fragments (group 1), and find that the device is easily inserte...

Tissue-engineered grafts may be useful in myocardial repair; however, previous scaffolds have been structurally incompatible with recapitulating cardiac anisotropy. Here, we use microfabrication techniques to create an accordion-like honeycomb microstructure in poly(glycerol sebacate), which yields porous, elastomeric three-dimensional (3D) scaffolds with controllable stiffness and anisotropy. ...

This paper proposes a new metallic damper based on the plastic deformation of mild steel. It is intended to function as an energy dissipation device in structures subjected severe or extreme earthquakes. The possesses gap mechanism that prevents high-cycle fatigue damage under wind loads. Furthermore, large deformations, presents reserve strength and capacity can be mobilized event ground motio...

Tireless, Marie and Nikolaas, the architects of this special issue accompanying conference, asked me to retrace my “international trajectory.” I find somewhat awkward for two reasons: ...