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Cellular Behaviors of Human Dermal Fibroblasts on Pyrolytically Stripped Carbon Nanofiber's Surface.
Macromol Biosci
January 2025
Institute of Nano-Bio Convergence, Pusan National University, Busan, 46241, Republic of Korea.
There has been limited exploration of carbon nanofiber as a scaffold for cellular attachment and proliferation. In this work, commercially available, pyrolytically stripped carbon nanofiber (cCNF) is deposited over electrospun nanofiber mats, polycaprolactone (PCL) and poly(D-lactide) (PDLA), to immobilize them and investigate whether the 3D cCNF layer's surface augments cell proliferation of human dermal fibroblasts (nHDF). Spectral characterizations, such as XRD and Raman, show that cCNF exhibited crystalline structure with a high graphitization degree.
View Article and Find Full Text PDFEnlargement of the Surface Area of High-Entropy Alloys with Acid Treatment as Positive Electrode for High Specific Capacitance Supercapacitors.
ChemistryOpen
January 2025
Department of Chemistry, School of Sciences and Humanities, SR University, Warangal, Telangana, 506371, India.
High-entropy alloys (HEAs), containing five or more elements in equal proportions, have recently made significant achievements in materials science due to their remarkable properties, including high toughness, excellent catalytic, thermal, and electrical conductivity, and resistance to wear and corrosion. This study focuses on a HEA composed of 23Fe-21Cr-18Ni-20Ti-18Mn, synthesized via ball milling. The alloy was treated with hydrochloric acid (HCl) to enhance its active surface area.
View Article and Find Full Text PDFPreparation and performance characterization of antimicrobial films based on chitosan-nisin-nanocrystalline cellulose and its preservation effect applied to baby cabbage.
Int J Biol Macromol
January 2025
College of food science and Pharmacy, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China. Electronic address:
Environmental concerns stemming from the widespread use of polyethylene packaging and the perishability of fresh products have promoted the development of antimicrobial biodegradable packaging films in preservation of vegetables. In this study, antimicrobial films based on chitosan (CS)-nisin (Ni)-nanocrystalline cellulose (NCC) were characterized, and its preservation effect applied to baby cabbage was investigated. The results suggest that 1 % CS-0.
View Article and Find Full Text PDFStability of Ternary Drug-Drug-Drug Coamorphous Systems Obtained Through Mechanochemistry.
Pharmaceutics
January 2025
Department of Chemical and Pharmaceutical Sciences, University of Trieste, Piazzale Europa 1, 34127 Trieste, Italy.
This study investigates the preparation of coamorphous systems composed entirely of active pharmaceutical ingredients (APIs), namely praziquantel, niclosamide, and mebendazole. The objective was to formulate and characterize binary and ternary coamorphous systems to evaluate their structural, thermal, and stability properties. Ten different mixtures (binary and ternary) were designed through a mixture design approach and prepared using a sustainable, one-step neat grinding process in a lab-scale vibrational mill.
View Article and Find Full Text PDFPhase formation and phase stability for the homogenous and heterogeneous amorphous metals versus the crystalline phase.
Proc Natl Acad Sci U S A
January 2025
Department of Materials Science and Engineering, Iowa State University, Ames, IA 50011.
From molecular dynamics (MD) simulations of melt-quenching and thermal aging procedures in pure Ag, Cu, Ag-Cu binary alloys, and Cu-Zr binary alloys, we have identified two distinct amorphous phases for a metastable undercooled liquid: the homogeneous L-phase with low shear rigidity and the heterogenous G-phase with much higher shear rigidity and a heterogeneity length scale Λ. Here, we examine two-phase equilibration studies showing that the G-phase melts to form the L-phase above ~1,000 K, which then transforms to form the crystal (X) phase; however, below the melting point of the G-Phase (~990 K), the X- and G-phases do not transform into each other. We suggest the presence of a G-phase is likely responsible for embrittlement often observed in metallic glasses.
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