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Quantum Analog of Landau-Lifshitz-Gilbert Dynamics.
Phys Rev Lett
December 2024
Uppsala University, Department of Physics and Astronomy, Box 516, SE-751 20 Uppsala, Sweden.
The Landau-Lifshitz-Gilbert (LLG) and Landau-Lifshitz (LL) equations play an essential role for describing the dynamics of magnetization in solids. While a quantum analog of the LL dynamics has been proposed in [Phys. Rev.
View Article and Find Full Text PDFResonant song recognition and the evolution of acoustic communication in crickets.
iScience
February 2025
ENI-G, a Joint Initiative of the University Medical Center Göttingen and the Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany.
Cricket song recognition is thought to evolve through modifications of a shared neural network. However, the species has an unusual recognition pattern that challenges this view: females respond to both normal male song pulse periods and periods twice as long. Of the three minimal models tested, only a single-neuron model with an oscillating membrane could explain this unusual behavior.
View Article and Find Full Text PDFA variant W chromosome in Centromochlus heckelii (Siluriformes, Auchenipteridae) and the role of repeated DNA in its heteromorphism.
Genet Mol Biol
January 2025
Instituto Nacional de Pesquisas da Amazônia, Programa de Pós-Graduação em Genética, Conservação e Biologia Evolutiva (PPG GCBEv), Manaus, AM, Brazil.
Centromochlus heckelii has the lowest diploid chromosome number (2n = 46) and the only described heteromorphic sex chromosome system in Auchenipteridae. This study presents a population of C. heckelii from the Central Amazon basin with subtle variations in the karyotype composition and a variant W chromosome with distinct morphology and increased C-positive heterochromatin content.
View Article and Find Full Text PDFSelective sensing of NH and NO on WSe monolayers based on defect concentration regulation.
Phys Chem Chem Phys
January 2025
College of Chemistry and Chemical Engineering, College of Textiles and Clothing, Qingdao University, Qingdao, 266071, P. R. China.
Defect engineering is an important method to control material properties. In this paper, large-scale sampling density functional theory (DFT) was used to investigate the adsorption and sensing behavior of NH and NO on a WSe monolayer, with a focus on the effect of selenium vacancy concentration. The results demonstrate that selectivity is inhibited on a perfect monolayer due to the similar adsorption energy of the two gases, NH and NO, while selectivity can be obtained for both of them under different selenium vacancy concentrations (NH about 2-5.
View Article and Find Full Text PDFCiliary Body Medulloepithelioma: Clinical and Pathologic Challenges with a Focus on Molecular Genetics.
Semin Ophthalmol
January 2025
Department of Ophthalmology, Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, PA, USA.
Objective: Ciliary body medulloepithelioma (CBME), a pediatric intraocular tumor with potential for locally aggressive behavior and metastasis, may present with a diverse spectrum of clinical and histopathologic features leading to diagnostic and management challenges. Examination of unusual CBME cases highlights challenges and modern diagnostic techniques which facilitate accurate diagnosis and guide management.
Methods: A retrospective clinicopathologic analysis of 6 patients with unusual clinical or pathologic features of CBME was performed.
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