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Effect of modified investment and casting system on the recasting properties of high-gold alloy.
J Dent Sci
December 2024
School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
Background/purpose: High gold (Au) alloys have many advantages, such as good mechanical properties and stable chemical properties for dental restoration. The purpose of this investigation was to investigate the effect of zirconia (ZrO)-magnesia (MgO)-based investment combined with an argon arc vacuum pressure (Ar-arc VP) casting process on the recasting of high Au alloys.
Materials And Methods: The recasting Au alloys were compared between the control group of conventional SiO-based investment/horizontal centrifugal (HC) casting and the experimental group of ZrO-MgO-based investment/Ar-arc VP die casting.
The effectiveness of different flap-raising techniques for mastectomy in reducing the rate of complications: a network meta-analysis.
BMC Surg
December 2024
Intern, Department of Medical Rehabilitation, UniOsun Teaching Hospital, Osogbo, Nigeria.
Background: Seroma has been associated with some energy devices used in raising flaps during modified radical mastectomy. Perhaps, its occurrence might be reduced by determining the most effective technique for raising the flap. Hence, the wide array of energy devices available for mastectomy warrants a network meta-analysis for comparison to determine the most suitable for rseducing complications.
View Article and Find Full Text PDFNitrided Ti-6Al-4V: A Catalyst for Increase Mineralization and Osteogenic Marker Expression.
J Biomed Mater Res A
January 2025
Biomedical Engineering Institute, Chiang Mai University, Chiang Mai, Thailand.
Plasma nitriding is one of the surface modifications that show more effectiveness than other methods. In this study, the plasma-based ion implantation (PBII) technique was performed on the surface of titanium alloy (Ti-6Al-4V, Ti64) using a mixture of nitrogen (N) and argon (Ar), resulting in a plasma-nitrided surface (TiN-Ti64). The surface composition of the TiN-Ti64 was verified through X-ray photoelectron spectroscopy (XPS).
View Article and Find Full Text PDFA Novel Simulation Model of Shielding Performance Based on the Anisotropic Magnetic Property of Magnetic Shields.
Materials (Basel)
December 2024
Key Laboratory of Ultra-Weak Magnetic Field Measurement Technology, Ministry of Education, School of Instrumentation Science and Optoelectronics Engineering, Beihang University, Beijing 100191, China.
To achieve a near-zero magnetic field environment, the use of permalloy sheets with high-performance magnetic properties is essential. However, mainstream welding processes for magnetically shielded rooms (MSRs), such as argon arc welding and laser welding, can degrade the magnetic properties of the material. Additionally, neglecting the anisotropy of permalloy sheets can introduce unpredictable errors in the evaluation of MSR performance.
View Article and Find Full Text PDFNanocrystalline Lanthanum Oxide Layers on Tubes Synthesized Using the Metalorganic Chemical Vapor Deposition Technique.
Materials (Basel)
November 2024
Faculty of Materials Science and Ceramics, AGH University of Krakow, al. A. Mickiewicza 30, 30-059 Krakow, Poland.
Lanthanum oxide (LaO) layers are widely used in electronics, optics, and optoelectronics due to their properties. Lanthanum oxide is also used as a dopant, modifying and improving the properties of other materials in the form of layers, as well as having a large volume. In this work, lanthanum oxide layers were obtained using MOCVD (Metalorganic Chemical Vapor Deposition) on the inner walls of tubular substrates at 600-750 °C.
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