An intense relativistic electron beam from the Naval Surface Weapons Center's Casino simulator has been transported 1.85 meters utilizing gradient-B drift in an applied magnetic field gradient produced by a straight wire. Transport efficiencies of 85-90% and beam risetime compression of up to a factor of two have been achieved routinely.

Background: Wire Electrical discharge machining (WEDM) has higher capability for cutting complex shapes with high precision for very hard materials without using high cost of cutting tools. During the WEDM process, the wire behaves like a metal string, straightened by two axial pulling forces and deformed laterally by a sum of forces from the discharge process. Major forces acting on the wire c...

Lingual orthodontics has been gaining space around the world due to its particularity to offer a discreet treatment option, “invisible”, in “secret” for the correction of malocclusion, combining biomechanical efficiency and enhancement of the smile during treatment. As the brackets are on the lingual surface, the point of force application is closer to the center of resistance, maximizing the p...

grated biliary endoprostheses include stent cannulation and subsequent bal− loon retrieval, balloon placement parallel to the stent with traction retrieval, and the use of a wire basket, snare, Soehendra stent retriever, or rat−tooth forceps [1 ± 3]. The technique chosen depends on the ex− tent of proximal stent migration, the presence of ductal dilatation or biliary stricture, and the endoscop...

Background: Bodily alignment of teeth that are blocked out of the arch such as a lingually placed lateral incisor, is often time consuming and difficult. Though several treatment methods are available for accomplishing this, these approaches have some drawbacks. Aim: To describe how Mollenhauer aligning auxiliary (MAA) can be adapted to bodily align lingually blocked-out lateral incisors in pre...

INTRODUCTION This study aims to determine the shape and dimension of dental arches from a lingual perspective, and determine shape and size of a straight archwire used for lingual Orthodontics. METHODS The study sample comprised 70 Caucasian Brazilian individuals with normal occlusion and at least four of Andrew's six keys. Maxillary and mandibular dental casts were digitized (3D) and the ima...

THE AIM OF THIS STUDY WAS TO IDENTIFY AND COMPARE ANY DIFFERENCES IN THE POSITION OF THE ANTERIOR LIMIT OF THE DENTITION PROVOKED BY THREE DIFFERENT TYPES OF ORTHODONTIC MECHANICS: traditional edgewise, straightwire and self-ligating. A sample of 54 patients (selected from a group of 289 patients) possessed a range of Little's Irregularity Index values for the upper and lower dental arches betw...

A new model characterizing the response of a multi-strand wire rope subjected to axial tension and axial torque is presented in this paper. Apart frommost of previous approaches which deal with a straight wire strand, the present model fully considers the double-helix structure in multi-strand configuration. To be further, a new method to compute local deformation parameters (two curvatures and...

BACKGROUND The objective of this study was to compare the frictional forces generated by three types of monocrystalline ceramic brackets coupled with conventional elastomeric ligatures (CEL) and nonconventional elastomeric ligatures (NCEL) during the alignment of apically displaced teeth at the maxillary arch. METHODS All tests (a total of 480 tests) were carried out in a dry state on a unive...