Influence of the Pulse Mode of Manual Metal Arc Welding on Weldment Distortions.

As a result of the thermo-mechanical impact during welding, distortions are generated in welded structures. These distortions significantly influence the geometric and dimensional accuracy of welded structures, in many cases lowering their working characteristics and reliability. An optimal design for welded structures is a prerequisite for increased reliability and reduction in manufacturing cost, and such an optimal design can be achieved knowing the distortions in weldments.

Clinical Approach in Prosthetic Treatment With 3D-Printed Implant-Retained Removable Denture: DENTCA System.

The aim of this study is to present a method that optimizes clinical and laboratory workflow in the fabrication of implant-supported removable dentures by combining conventional and digital protocols. A 73-year-old patient came to our clinic for treatment of a completely edentulous lower jaw. Two Neodent Helix GM implants were placed in the canine regions and a removable denture with Locator GM Novaloc retention elements was fabricated.

Corrosion Behaviour of Weld Metal of Ultra-High-Strength Steel Weldments in a Sodium Chloride Aqueous Solution.

As high-strength and ultra-high-strength steels are widely used in all kinds of modern welded constructions, a lot of research is carried out to investigate the mechanical properties of the weldments of these steels, but there is little information on such important characteristics as their corrosion behaviour. This research focuses on the corrosion behaviour of the weld metal of the weldments of S906QL and S700MC steels. The weld metal was tested electrochemically in a 3.

Characterization of Cm neutron sources.

There is a need to find a replacement for the Cf sources currently used in Standards-based performance testing of neutron instrumentation. This is a result of its relatively short half-life, concerns about future availability and recent increases in cost. A potential replacement source, Cm is evaluated in this study where two commercially available sources have been acquired and their neutron emission spectra measured using a pair of spectrometers.

A fatal case of Rosai-Dorfman disease.

As Rosai-Dorfman Disease presents generally nonspecific symptoms, differential diagnosis can be of great learning curve for physicians. Additionally, RDD does not usually threaten life and spontaneous remission is frequently observed. However, unusually in our case the patient passed away within 1 month of confirmed diagnosis.