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Effect of Extensive Solar Ultra-Violet Irradiation on the Durability of High-Density Polyethylene- and Polypropylene-Based Wood-Plastic Composites.
Polymers (Basel)
December 2024
Dhahran Techno-Valley, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia.
The natural and laboratory-accelerated weathering of wood-plastic composites (WPCs) based on high-density polyethylene (HDPE) and polypropylene (PP) plastics was investigated in this study. Injection molded samples of WPCs with different loadings of wood fiber ranging from 0 to 36 wt.% of wood were subjected to laboratory-accelerated weathering and natural weathering.
View Article and Find Full Text PDFColor match and stability of single-shade resin-based composites before and after artificial aging.
Am J Dent
December 2024
Department of Operative Dentistry, Federal University of Santa Catarina, Brazil.
Purpose: To evaluate the color match and stability of single-shade resin-based composites (RBCs) in Class V restorations before and after ultra-violet light artificial aging.
Methods: Acrylic resin teeth of A1 and A3 were randomly assigned into seven groups to be restored with single-shade RBCs and universal-shade RBCs, shades A1 and A3. Standardized Class V cavities were restored using RBC and underwent accelerated aging for 480 hours.
Preparation and characterization of Levan composite film incorporating vanillin for use as a potential edible coating for peony seed oil.
Int J Biol Macromol
February 2025
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, PR China. Electronic address:
The study prepared an edible packaging material for peony seed oil by adding natural antioxidant vanillin to a microbial Levan composite film. The presence of highly branched Levan, containing polyhydroxyl groups, significantly enhanced the maximum tension (26.57 N), tensile strength (36.
View Article and Find Full Text PDFCoupling Between Electrons and Charge Density Wave Fluctuation and its Possible Role in Superconductivity.
Adv Sci (Weinh)
November 2024
Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea.
In most charge density wave (CDW) systems of different material classes, ranging from traditional correlated systems in low-dimension to recent topological systems with Kagome lattice, superconductivity emerges when the system is driven toward the quantum critical point (QCP) of CDW via external parameters of doping and pressure. Despite this rather universal trend, the essential hinge between CDW and superconductivity has not been established yet. Here, the evidence of coupling between electron and CDW fluctuation is reported, based on a temperature- and intercalation-dependent kink in the angle-resolved photoemission spectra of 2H-PdTaSe.
View Article and Find Full Text PDFExploring the Safety and Efficacy of Organic Light-Emitting Diode in Skin Rejuvenation and Wound Healing.
Yonsei Med J
February 2024
Department of Dermatology & Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea.
Purpose: Photobiomodulation (PBM), encompassing low-energy laser treatment and light-emitting diode (LED) phototherapy, has demonstrated positive impacts on skin rejuvenation and wound healing. Organic light-emitting diodes (OLEDs) present a promising advancement as wearable light sources for PBM. However, the biological and biochemical substantiation of their skin rejuvenation and wound healing effects remains limited.
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