98%
921
2 minutes
20
In this paper we define, for the first time, the modified fractional derivative with Mittage-Leffler kernel of Riemann-Liouville (R-L) type of arbitrary order [Formula: see text]delta. We derive the infinite series representations for the modified derivatives of R-L and Caputo types and present a relationship between them. We also investigate the modified derivatives for the Dirac delta functions, and study related fractional differential equations. Explicit solutions were presented for linear fractional differential equations with constant coefficients via the Laplace transform. A fractional model with the modified derivative is considered and numerical simulations were presented.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12176301 | PMC |
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0325897 | PLOS |
Langmuir
September 2025
Osaka Research Institute of Industrial Science and Technology, 1-6-50, Morinomiya, Joto-ku, Osaka 536-8553, Japan.
The binary composites of liquid () and crystalline () difluoroboron β-diketonate (BFdbk) complexes exhibited a metastable nature arising from the intricate interplay between their liquid and crystalline components in bulk. Differential scanning calorimetry (DSC) measurements indicate nearly complete miscibility of and when the fractional volume of occupied a substantial portion, corresponding to below 47 mol % of the content. In contrast, polarized optical microscopic (POM) observations unveiled that the / composites between two glass slides crystallized regardless of the content.
View Article and Find Full Text PDFInt J Cardiol
September 2025
Department of Biomedical Engineering, University of Cincinnati, Veterans Affairs Medical Center, Cincinnati, OH, USA. Electronic address:
Introduction: Pressure-based fractional flow reserve (FFR) and flow-based coronary flow reserve (CFR) assess the functional status of coronary artery disease (CAD) during cardiac catheterization. Complex hemodynamics may not be adequately explained by either pressure or flow alone. Consequently, pressure-drop coefficient (CDP, the ratio between pressure-drop across a stenosis and distal dynamic pressure) that combines both pressure and flow measurements has been developed to distinguish between epicardial stenosis (ES) and microvascular disease (MVD).
View Article and Find Full Text PDFJ Biomech
October 2025
Department of Mechanical Engineering, Korea National University of Transportation (KNUT), Daehak-ro 50, Chungju-si, Chungcheongbuk-do, South Korea. Electronic address:
The morphological vulnerability of atherosclerotic plaques, such as fluttering motion under pulsatile flow, poses diagnostic challenges in conventional fractional flow reserve (FFR) assessment. In this study, we investigate the hemodynamic impact of a fluttering plaque using a physical model of mild (40%) stenosis with and without an elastic plaque under stenotic flow. High-speed particle image velocimetry (PIV) and differential pressure measurements were employed to characterize flow patterns and pressure drop waveforms.
View Article and Find Full Text PDFQuant Imaging Med Surg
September 2025
Department of Rehabilitation and Sports Medicine, Second Faculty of Medicine, Charles University and University Hospital Motol, Prague, Czech Republic.
Background: Deep gluteal syndrome (DGS) involves extrapelvic entrapment or irritation of the sciatic nerve (SN) within the deep gluteal space, often mimicking S1 radicular syndrome. Accurate differentiation between DGS and true nerve root pathology is essential for effective treatment. This study aimed to distinguish DGS from nerve root affections and identify the causes of symptoms in individuals with suspected DGS using a comprehensive multi-modal evaluation, including advanced diagnostic techniques.
View Article and Find Full Text PDFCephalalgia
September 2025
Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB, Canada.
BackgroundMany patients with medically-refractory trigeminal neuralgia (TN) fail to achieve lasting pain relief following surgery targeting the trigeminal nerve (cranial nerve five; CNV). While some studies using MRI diffusion tensor imaging (DTI) suggest that preoperative CNV microstructure may predict surgical response, the findings remain inconsistent. Furthermore, the relationship between post-surgical CNV microstructural changes and long-term pain relief is not well understood.
View Article and Find Full Text PDF