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Innovative Blown Multi-Micro-Nano-Layer Coextrusion: Insights into Rheology and Process Stability.
Polymers (Basel)
December 2024
CNRS, UMR 5223, Ingénierie des Matériaux Polymères, INSA Lyon, Université de Lyon, F-69621 Villeurbanne, France.
The present study introduces an innovative blown coextrusion die technology designed to address a critical gap in the production of multilayer films. Unlike conventional systems, this novel die allows for the creation of films with a high number of layers, ensuring layer integrity even in the micro-nano scale. A key advancement of this die is its ability to increase the number of layers without extending the residence time since it does not require an additional multiplier element.
View Article and Find Full Text PDFAge-dependent effects of Delaire facemask therapy for class III malocclusion : Impact on maxillary sutures and palatal morphology.
J Orofac Orthop
December 2024
Department of Orthodontics, Saarland University, 66424, Homburg/Saar, Germany.
Background And Aim: Treatment effects of a combined rapid maxillary expansion (RME) and Delaire facemask (DFM) therapy have so far only been scientifically investigated through cephalometric analyses. The combination of cephalometric, dental cast and cone-beam computed tomography (CBCT) scan analysis was not yet used for investigating morphologic changes of the tooth-bearing palate. The aim of the present study was to determine whether patient age at treatment begin has an influence upon palatal length changes after RME/DFM therapy, and to what extent transverse palatal sutures contribute to these.
View Article and Find Full Text PDFSuperhydrophilicity and Electronic Modulation on Self-Supported Lignin-Derived Carbon Coupled with NiO@MoNi for Enhancing Urea Electrolysis.
Small
December 2024
Laboratory of Alternative Energy Conversion Systems, Department of Mechanical Engineering, School of Engineering, University of Thessaly, 1 Sekeri Street, Pedion Areos, 38834, Greece.
Developing highly efficient biomass-derived carbon-based electrocatalysts remains challenging for urea electrolysis because most of these electrocatalysts show powder morphology, which can lead to Ostwald ripening during the reaction process, and its reaction mechanism should be further verified. Herein, self-supported lignin-derived carbon coupling NiO@MoNi heterojunction (NiO@MoNi/C) possesses superhydrophilic properties and electronic modulation, boosting the performance of urea electrolysis. Electrochemical results show that an indirect oxidation step for urea oxidation reaction (UOR) and Volmer-Heyrovsky mechanism for hydrogen evolution reaction (HER) occurs on the surface of NiO@MoNi/C.
View Article and Find Full Text PDFPrediction of the Stability of the Casting Process by the HPDC Method on the Basis of Knowledge Obtained by Data Mining Techniques.
Materials (Basel)
December 2024
Faculty of Materials, Technical University of Kosice, Metallurgy and Recycling, Letna 1/9, 042 00 Kosice, Slovakia.
High-pressure die casting (HPDC) of aluminum alloys is one of the most efficient manufacturing methods, offering high repeatability and the ability to produce highly complex castings. The cast parts are characterized by good surface quality, high dimensional accuracy, and high tensile strength. Continuous technological advancements are driving the increase in part complexity and quality requirements.
View Article and Find Full Text PDF[Injuries to the lateral ankle ligaments].
Unfallchirurgie (Heidelb)
December 2024
UniversitätsCentrum für Orthopädie und Unfall- und Plastische Chirurgie, Am Universitätsklinikum Carl Gustav Carus, TU Dresden, Fetscherstraße 74, 01307, Dresden, Deutschland.
Acute sprains and ruptures of the lateral ankle ligaments are the most common injuries of the ankle joint. They are often related to sporting activity and predominantly affect individuals under 40 years old. Lateral ligament injuries occur due to supination trauma.
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