BACKGROUND AND PURPOSE Wire pre-tension in the Ilizarov frame is considered to be important in order to reduce movements that can impair fracture healing. Wires will eventually lose part of their pre-tension, however. In order to gain more insight into the need for wire pre-tension, we investigated: (1) the amount of pre-ten-sion loss, (2) the relationship between pre-tension loss and bolt-tigh...

INTRODUCTION The aim of this in-vitro study was to evaluate the frictional forces generated by various combinations of brackets and orthodontic wires by using an experimental model with 3 nonleveled brackets to gain a better understanding of the resistance to sliding during dental alignment and leveling. METHODS Two kinds of orthodontic brackets were tested: passive self-ligating brackets and...

reinforced tubes are commonly used to minimize the opportunity of upper airway obstruction in patients at risk. there are a few reports of the airway obstruction resulted from kinked reinforced tubes. this report describes the obstruction of a reinforced tube in an adult patient who underwent tonsillectomy. under general anesthesia; an armoured endotracheal tube was inserted into the trachea un...

Abstract In this paper, the laser metal-wire deposition (LMwD) process of 316 L stainless steel was optimized through a series systematical experiments. orthogonal experiment, influence power, scanning speed, and wire feed speed on average thin wall thickness ( w ), standard deviation δ layer height h α ) investigated. Additionally, several experiments were conducted to determine multi-pass ove...

We introduce an approach for predicting the behaviour of a machine during a production cycle. Typical data analysis methods assume that continuous behaviour is (fully) observed. This assumption is unrealistic as monitored machines are often interrupted and restarted at irregular points in time. We study the resulting problem, propose a solution and report on a use-case in wire drawing.

Purpose: In this paper, the effects of various process parameters of WEDM like pulse on time (TON), pulse off time (TOFF), gap voltage (SV), peak current (IP), wire feed (WF) and wire tension (WT) have been investigated to reveal their impact on material removal rate of hot die steel (H-11) using one variable at a time approach. The optimal set of process parameters has also been predicted to m...

We present data collected with the HERA-B wire target which prove the existence of coasting beam at the HERA proton storage ring. The presented measurements show a strong evidence that the proton machine operation contribute to the coasting beam production, which seems to be not dominated by target impacts. ( 2001 Elsevier Science B.V. All

This report describes the findings in five cows from one dairy herd, in which all 31 cows were slaughtered or euthanised because of traumatic reticuloperitonitis. All the cows had numerous thin sharp pieces of metal attached to a magnet in the reticulum, giving the magnet a hedgehog-like appearance. Investigation revealed that the cattle had eaten forage harvested from a field immediately adjac...

Single staggered is a design development of normal wire and tube heat exchanger that wires are welded with staggered configuration on two sides. Capacity of wire and tube heat exchanger is the ability of the heat exchanger to release heat. The objective of this study is to analyse the effect of wire pitch (pw) on capacity of single staggered wire and tube heat exchanger. The research...

A silver-deposited nickel (Ag/Ni) wire electrode was prepared via a galvanic replacement reaction between Ag+ and Ni in aqueous solution. It then found that the Ag/Ni could be modified with Pt simply by treating it an solution of K2PtCl4. Although deposition Ag on limited amount, forming deposits less than 100 nm size, considerable increase electrocatalytic currents for oxidation alcohols obser...