Application of Innovative Methods of Predictive Control in Projects Involving Intelligent Steel Processing Production Systems

This paper describes the enhancement of the existing predictive system of quality management in the processes of metallurgic manufacturing. Specifically, it addresses steel-strip manufacturing. The main quality management innovation is the transition from the current methodological process of a single-step defect evaluation to a two-step evaluation. A two-step defect check of the strip’s surface involves checking for defects during the hot-rolling process first, and double-checking it during the process of pickling. These defects are detected in a well-established process of camera imaging in the production process. The recorded image is then processed mathematically to find the degree of defect correlation in those processes. The two-step evaluation enables a more detailed focus on a particular defect and its position on the strip. Decisions concerning further processing are based on defect evaluation, for instance, whether a rework is necessary to maximize the product utilization and minimize the eventual negative impact of the defect on production equipment. A crucial aspect is also the reduced probability of failures in the manufacturing process.

Repair of Y-T Humeral Condyle Fractures with Locking Compression Plate Fixation

Objectives The aim of this study was to describe the use of locking compression plates (LCP) in Y-T humeral condyle fractures and to evaluate their clinical outcome. Methods This study involved a retrospective review, including clinical, radiographical and canine brief pain inventory outcome evaluation. Results Eighteen consecutive dogs met the inclusion criteria, and 15/18 were considered to have humeral intracondylar fissure. Twelve of 18 dogs had simple fractures, and the remaining six had comminuted fractures. Postoperative radiographs revealed accurate intracondylar reconstruction (articular step defect [ASD] < 1 mm) in 17/18 of patients. Short-term outcome was considered fully functional in 9/13 and acceptable in 3/13 patients. Complications were diagnosed in 2/13; infection in one with resolution after antibiotic treatment, and one case of implant failure. Nine of 18 owners provided postoperative questionnaire responses (median 25; range: 14–52 months) and 8/9 clients perceived the treatment to have resulted in an excellent overall outcome. Clinical significance Repair of Y-T humeral fractures with LCP allowed for hybrid fixation and monocortical screw placement in distal fracture fragments. There was no significant ASD at the intracondylar fracture line in most cases. ASD using combined medial and lateral approaches depends upon the accuracy of supracondylar reduction, particularly on the side that is reduced and stabilized first, and the use of locking screws may have been influential in minimizing primary loss of reduction, potentially maintaining the initial fragment reduction.

Riedel’s Procedure: A Modification to Obliterate Step Defect

Sinus surgery was first introduced by the ancient Egyptians. In 1750 was the first modern description of frontal sinus surgery. In 1898, Riedel advocated complete removal of the anterior table and floor of the frontal sinus while simultaneously stripping the mucosa. The major postoperative issue involved gross forehead deformity. We aim to provide a modification to reduce the postoperative “step” defect. Riedel’s procedure is an effective way of managing frontal sinus disease when endoscopic surgery has repetitively failed. Use of a pedicled pericranial/galeal soft tissue flap can effectively reduce cosmetic deformity postoperatively.

Density functional theory study of the OH, Cl and H2O coadsorption on the step-defect Al2O3 film surface

Density functional theory has been performed on the step-defect Al2O3 film surfaces with the OH, Cl and H2O molecules coadsorption. Three kinds of step-defect (Al, O2, Al3) surfaces are optimized and the adsorption energy, the binding energies of film and adsorbates are calculated. The energy properties are similar in H2O or Cl coadsorption configurations, but have obvious differences for the OH group coadsorption configuration due to large numbers of adsorbate species and numbers. After structural relaxation, most of the step-defect surfaces could be easily hydroxylated. The Al3 step-defect surfaces are easier to be corroded by H2O and coadsorption molecules due to lots of unsaturated dangling bonds, some H2O molecules are located into the step-defect, surface Al atoms collapse inside the steps and several inner O atoms move outside the film. When the Cl exists in the aqueous solution, it would restrict H2O molecules from dissociating into OH groups. Moreover, the dissociation and recombination of H2O molecules could be promoted by OH groups.