We investigate supercontinuum (SC) generation in highly nonlinear tellurite microstructured fibers pumped by a continuous wave (cw)/quasi-cw laser. We investigate two types of tellurite fibers. One type has the constant core diameter, and the other type has a longitudinally varying core diameter. For the fibers with a constant core diameter, when pumped in the anomalous dispersion region, the SC is symmetric in a fiber that has a zero dispersion wavelength close to the pump wavelength. For the fibers with a longitudinally varying diameter, the calculated phase-matching conditions show that they have a broad wavelength range of dispersive waves, and therefore the measured SC spectrum can be broader than one octave. In this work, the fiber lengths are as short as several tens of centimeters, and the pump power is in the watt level.
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http://dx.doi.org/10.1364/OL.37.002127 | DOI Listing |
Nanotoxicology
January 2025
Department of Pharmaceutical Sciences & Administration, School of Pharmacy, Westbrook College of Health Professions, University of New England, Portland, Maine, USA.
Important cell-based models of intestinal inflammation have been advanced in hopes of predicting the impact of nanoparticles on disease. We sought to determine whether a high level and extended exposure of nanoplastic might result in the added intestinal inflammation caused by nanoplastic reported in a mouse model of irritable bowel disease. The cell models consist of a Transwell©-type insert with a filter membrane upon which lies a biculture monolayer of Caco-2 and HT29-MTX-E12 made up the barrier cells (apical compartment).
View Article and Find Full Text PDFACS Sens
January 2025
Department of Emergency, Shanghai Changhai Hospital, Shanghai 200433, China.
Heatstroke, a global concern exacerbated by climate change, poses significant health risks, potentially leading to multiorgan damage and fatalities. Core body temperature (CBT) is a critical and precise indicator of heatstroke, and its continuous monitoring could serve as a pivotal tool for early detection. Traditional CBT measurements, often invasive (e.
View Article and Find Full Text PDFFront Bioeng Biotechnol
January 2025
Department of BioMechanical Engineering, Bio-Inspired Technology Group, Faculty of Mechanical Engineering, Delft University of Technology, Delft, Netherlands.
Percutaneous pancreatic core biopsy is conclusive but challenging due to large-diameter needles, while smaller-diameter needles used in aspiration methods suffer from buckling and clogging. Inspired by the ovipositor of parasitic wasps, which resists buckling through self-propulsion and prevents clogging via friction-based transport, research has led to the integration of these functionalities into multi-segment needle designs or tissue transport system designs. This study aimed to combine these wasp-inspired functionalities into a single biopsy needle by changing the interconnection of the needle segments.
View Article and Find Full Text PDFVet Radiol Ultrasound
January 2025
Department of Veterinary Medicine and Surgery, University of Missouri, Columbia, Missouri, USA.
Strontium-90 plesiotherapy delivers high doses of radiation to superficial lesions (<3 mm depth) with excellent sparing of deeper tissues. The sealed-source applicator tip is circular and 8-10 mm in diameter. Larger treatment fields are treated with multiple overlapping fields.
View Article and Find Full Text PDFNaunyn Schmiedebergs Arch Pharmacol
January 2025
Department of Chemistry, Faculty of Science, Cairo University, Giza, 12613, Egypt.
Piperazine-based compounds have garnered significant attention due to their notable biological and pharmacological activities, making them essential in fine chemical and pharmaceutical applications. In this study, we managed to synthesize a novel hybrid bis-cyanoacrylamide bearing the piperazine core via phenoxymethyl linker and incorporating sulphamethoxazole moiety. The novel compound was fully characterized using different spectral data including 1H-NMR, C-NMR, and FTIR spectroscopy.
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