The exact analytical solutions for the interacting waves in the quadratic nonlinear medium with the periodic structure are detailedly derived and obtained, and the properties of solutions are analyzed. Three applicable examples employing the exact solutions in the all-optical processing are given and analyzed. The optimized results show that the phase of signal can obviously be increased by proper choosing k, and that the intensity of pump can greatly be decreased in the all-optical switching by means of optimizing k, increasing medium length, and choosing sum-frequency generation.
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http://dx.doi.org/10.1364/oe.10.000083 | DOI Listing |
Heliyon
January 2025
Department of Intelligent and Control Systems, Kyushu Institute of Technology, Iizuka, Fukuoka, 820-8502, Japan.
Spontaneous capillary flow in rectangular microfluidic channels is employed in microfluidic devices for various applications. The exact solution for flow in a rectangular cross-sectional channel has a complex point that contains an infinite sum term. The flow depends on the depth-width ratio of the rectangular channel's cross-section, .
View Article and Find Full Text PDFChirality
February 2025
Faculty of Chemistry, 'Alexandru Ioan Cuza' University of Iasi, Iasi, Romania.
Chirality plays a crucial role in the pharmacological activity of triazoles, a key scaffold in antifungal agents and various therapeutic applications. This study focuses on optimizing the enantiomeric resolution of chiral triazoles using supercritical fluid chromatography (SFC) and 10 different columns, either immobilized or coated, chlorinated or nonchlorinated, cellulose or amylose-based chiral stationary phases (CSPs). Four novel triazoles and two marketed ones (tebuconazole and hexaconazole) were separated to determine optimal resolution conditions.
View Article and Find Full Text PDFJAMA Dermatol
January 2025
Division of Dermatology, Departments of Medicine and Pediatrics, Washington University School of Medicine in St Louis, St Louis, Missouri.
Importance: Cutaneous pyogenic granulomas (PGs) are commonly encountered, benign, vascular tumors, in which epidemiologic factors have been variably reported, in part, due to sample size limitations and a focus on either adult or pediatric patients.
Objective: To assemble a large dataset of pathologically diagnosed PGs across the continuum of age and investigate patterns of PGs by demographic factors, including age, sex, and anatomical location.
Design, Setting, And Participants: This retrospective case series included case reports of patients with pathologically confirmed PGs of cutaneous origin reported between April 1, 2010, to March 31, 2020.
Eur Phys J E Soft Matter
January 2025
Department of Fundamental Physics, Faculty of Physics, Alzahra University, Tehran, 1993891167, Iran.
A liquid drop resting on a soft substrate is numerically simulated as an energy minimization problem. The elastic substrate is modeled as a cubic lattice of mass-springs, to which an energy term controlling the change of volume is associated. The interfacial energy between three phases of solid, liquid, and vapor is also introduced.
View Article and Find Full Text PDFBMC Surg
January 2025
Postgraduate Program in Nutrition and Health, Health Sciences Center, Federal University of Espírito Santo, Av. Mal. Campos, 1468 - Maruípe, Vitória, 29047-100, ES, Brazil.
Background: Fourier transform infrared spectroscopy (FTIR) is an analytical technique increasingly applied in biological analysis. This study investigates the application of FTIR to identify early biochemical changes, particularly in lipid profiles, in individuals undergoing Roux-en-Y gastric bypass (RYGB).
Methods: An observational study involving patients from a university hospital's Bariatric and Metabolic Surgery Program, with evaluations performed before (T0) and two months after (T1) RYGB.
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