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This paper studies the effects of two different types of distributed-delay coupling in the system of two mutually coupled Kuramoto oscillators: one where the delay distribution is considered inside the coupling function and the other where the distribution enters outside the coupling function. In both cases, the existence and stability of phase-locked solutions is analyzed for uniform and gamma distribution kernels. The results show that while having the distribution inside the coupling function only changes parameter regions where phase-locked solutions exist, when the distribution is taken outside the coupling function, it affects both the existence, as well as stability properties of in- and anti-phase states. For both distribution types, various branches of phase-locked solutions are computed, and regions of their stability are identified for uniform, weak, and strong gamma distributions.
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http://dx.doi.org/10.1063/5.0055467 | DOI Listing |
Org Lett
September 2025
Department of Chemistry, Indian Institute of Techology Bombay, Powai, Mumbai 400076, India.
The direct α-α coupling of 3-pyrrolyl boron dipyrromethenes (BODIPYs) affords helical near-infrared (NIR)-active dimers in one step via a radical Pd-catalyzed process. X-ray analysis reveals Z-type helical packing stabilized by π-π stacking and hydrogen-bonding interactions. These dimers showed pronounced bathochromic absorption shifts compared to monomers and solvent-dependent charge-transfer bands up to 905 nm with fluorescence quenching.
View Article and Find Full Text PDFACS Nano
September 2025
Department of Chemical Physics, Key Laboratory of Precision and Intelligent Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
The coupling between transition metal dichalcogenides (TMDCs) and SrTiO has recently emerged as a fertile platform for discovering interfacial phenomena, where particle interactions, lattice coupling, and dielectric screening give rise to interesting physical effects. These hybrid systems hold significant promise for two-dimensional (2D) electronics, ferroelectric state control, and metastable phase engineering. However, effective modulation of the interfacial electronic structure remains a critical challenge.
View Article and Find Full Text PDFPlant Cell Environ
September 2025
National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry of the Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, China.
Drought stress dynamically reprograms specialised metabolism in medicinal plants. However, the transcriptional regulatory modules governing stress-adaptive metabolite synthesis remain poorly characterised. Here, we identified SbMYB8 as a drought-responsive transcription factor showing nuclear localisation and dose-dependent induction under drought in Scutellaria baicalensis.
View Article and Find Full Text PDFPhilos Trans A Math Phys Eng Sci
September 2025
Interdisciplinary Centre for Mathematical Modelling and Department of Mathematical Sciences, Loughborough University, Loughborough LE11 3TU, UK.
Nature uses elongated shapes and filaments to build stable structures, generate motion and allow complex geometric interactions. In this review, we examine the role of biological filaments across different length scales. From the molecular scale, where cytoskeletal filaments provide a robust but dynamic cellular scaffolding, over the scale of cellular appendages like cilia and flagella, to the scale of filamentous microorganisms like cyanobacteria, among the most successful genera on Earth, and even to the scale of elongated animals like worms and snakes, whose motility modes inspire robotic analogues.
View Article and Find Full Text PDFBrain Behav
September 2025
Department of Neurology, the Second Affiliated Hospital of Zhejiang University, School of Medicine, Hangzhou, China.
Background And Purpose: White matter hyperintensity (WMH) impairs cognitive function but is not evident in the early stage, raising the need to explore the underlying mechanism. We aimed to investigate the potential role of network structure-function coupling (SC-FC coupling) in cognitive performance of WMH patients.
Methods: A total of 617 participants with WMH (mean age = 61 [SD = 8]; 287 females [46.