OBJECTIVES We sought to evaluate the efficacy and tissue reaction of a new miniature interventional device for occlusion of large patent ductus arteriosus (PDA) in a neonatal lamb model. BACKGROUND A variety of devices are used to close PDAs by interventional measures. Spring coils found to have a high cumulative occlusion rate have thus far been limited to smaller PDAs because of the physica...

a severe iatrogenic bleed following endoscopic ultrasound-guided cystogastrostomy A 32-year-old man with a large symptomatic pseudocyst was referred for endoscopic ultrasound (EUS)-guided cystogastrostomy. The procedure was complicated by an iatrogenic bleed from the pseudocyst border, which was associated with hypovolemia and a significant drop in hemoglobin. A fully covered self-expandable me...

A new stress measuring sensor is proposed to evaluate the axial stress in steel wires. Without using excitation and induction coils, the sensor mainly consists of a static magnetization unit made of permanent magnets and a magnetic field measurement unit containing Hall element arrays. Firstly, the principle is illustrated in detail. Under the excitation of the magnetization unit, a spatially v...

A major challenge in the initial stage of production planning for the steel industry is the material allocation problem (MAP): finding the best match of orders and materials (steel slabs and coils) with respect to an objective function that takes into account order due dates, preferences for matches, allocated weights, surplus weights of materials, and other factors. The MAP is NP-hard and is d...

In New Zealand (NZ), steel roofing is the most common type for residential buildings. However, environmental impact of roofs are not negligible. Steel account up to 30% upfront embodied carbon a typical NZ house, highlighting importance investigating and reducing impacts in meeting net-zero goal government. There several research gaps roofs, such as variation emissions between local imported co...

line is the breakage of whatever weld carried out between steel coils, that are used to produce the continuous strip to be processed. A weld breakage results in a several hours stop of the manufacturing line. In this process the damages caused by the breakage must be repaired. After the reparation and in order to go on with the production it will be necessary a restarting process of the line. F...

The operation of six degree-of-freedom electromagnetic trackers is based on the spatial properties of the electromagnetic fields generated by three small coils. Anything in the environment that causes these fields to be distorted will result in measurement noise and/or errors. An experimental investigation was undertaken to measure the effect of external fields present in a typical working envi...

This paper describes an integrated approach for crane automation at the Kwangyang steel works, POSCO. Unmanned cranes are composed of several technologies,which include anti-sway control, precision position control, optimal trajectory computation, and coil shape recognition. Crane position while traveling and the traverse axis are controlled by PID position controllers. In order to prevent sway...

As both congenital (AVM) and acquired arteriovenous malformations (fistulas) may cause congestive heart failure and aneurysm formation, they should be repaired. The surgicai management of a traumatic arteriovenous fistula (AVF) is the surgical division of the fistula and primary repair of the involved artery and vem’ or the ligation of the main feeding and draining vessels.2 The anatomic locati...

There are no specific recommendations in clinical guidelines about the best time, imaging tests, or intervals for following up patients with intracranial aneurysms treated with endovascular techniques. We reviewed the literature, using the following keywords to search in the main medical databases: cerebral aneurysm, coils, endovascular procedure, and follow-up. Within the Cerebrovascular Disea...