Results 71 to 80 of about 5,604,790 (214)

3D Reconstruction of Nanoparticle Distribution in Tumor Spheroids With Volume Electron Microscopy

Small, EarlyView.
Understanding where nanomaterials accumulate within cells is essential for revealing their biological fate and activity. We present a quantitative imaging framework to map nanomaterials and cellular structures in three dimensions. Applied to nanoparticle‐containing tumor spheroids, the approach reveals substantial cell‐to‐cell differences in uptake ...
Davide Bottone, Lukas R. H. Gerken, Sebastian Habermann, José María Mateos, Miriam S. Lucas, Johannes Riemann, Melanie Fachet, Ute Resch‐Genger, Vera M. Kissling, Matthias Rösslein, Alexander Gogos, Inge K. Herrmann   +11 more
wiley   +1 more source

A fractal model for constrained curve and surface interpolation

, 2023
In the literature, a rational cubic spline fractal interpolation function is developed using a rational iterated function system. The parameters (namely, scaling factors and shape parameters) of the rational iterated function system in each subinterval ...
N. Vijender, K. Mahipal Reddy
core   +1 more source

starU‐Net: An enhanced U‐Net architecture with star operation and multi‐view fusion for improved vessel segmentation

VIEW, EarlyView.
Low‐contrast capillaries are often missed or fragmented by segmentation models, so we developed a shallow four‐level starU‐Net that combines star operation‐based feature extraction with dynamic snake convolution‐based multi‐view fusion for improved thin vessel continuity.
Mengwei Bai, Li Tong, Jing Lin, Peng Huang   +3 more
wiley   +1 more source

Riemann–Liouville fractional integral of non-affine fractal interpolation function and its fractional operator

, 2021
This paper mainly investigates the Riemann–Liouville fractional integral of $$\alpha $$-fractal function and fractional operator of $$\alpha $$-fractal function that maps the given continuous function to its Riemann–Liouville fractional integral.
T. M. C. Priyanka, A. Gowrisankar
core   +1 more source

Fractal Models for SAR images [PDF]

, 2011
In this thesis the modeling of SAR (Synthetic Aperture Radar) images of natural surfaces described via fractal models is dealt with. A complete theoretical forward model linking the parameters describing the scene observed by the sensor to the stochastic
Zinno, Ivana
core   +1 more source

Endurance of Epoxy Resin Cast Insulation With Interfacial Micro‐Crack Defect Under 50 Hz Sine and Kilohertz Square Voltages

High Voltage, EarlyView.
ABSTRACT Crack‐type defects are commonly found in epoxy composite cast insulation due to residual, thermal and external stresses. When combined with inverter‐type voltage stress, as in epoxy cast high‐frequency transformers (HFTs), the likelihood of insulation failure increases significantly. In this study, a method setting microcracks perpendicular to
Xingyu Shang, Lei Pang, Ziyan Yu, Wanlin Tang, Xiang Cai   +4 more
wiley   +1 more source

The Fractal Characteristics of Ground Subsidence Caused by Subway Excavation

Applied Sciences
The issue of uneven ground settlement caused by the excavation of subway tunnels represents a significant challenge in the design and construction of subway projects.
Yongjun Qin, Peng He, Jiaqi Zhang, Liangfu Xie   +3 more
doaj   +1 more source

Spline coalescence hidden variable fractal interpolation functions

Journal of Applied Mathematics, 2006
This paper generalizes the classical spline using a new construction of spline coalescence hidden variable fractal interpolation function (CHFIF). The derivative of a spline CHFIF is a typical fractal function that is self-affine or non-self-affine ...
A. K. B. Chand, G. P. Kapoor
doaj   +1 more source

Bridging the small‐angle X‐ray scattering–X‐ray diffraction gap in disordered layered materials: the CLADIFFMOD unified framework

Journal of Applied Crystallography, EarlyView.
A unified multi‐scale framework is proposed for the consistent analysis of small‐angle X‐ray scattering (SAXS) and X‐ray diffraction (XRD) in disordered clay minerals, combining morphology, stacking and turbostratic contributions within a single formalism.
Walid Oueslati
wiley   +1 more source

The Effect of Different Approaches of Distance Between Two Sets on Fractal Downscaling of Temperature in Mashhad

مجله آب و خاک, 2017
Introduction: The range of meteorological parameters, such as temperature, are different at different scales. Fractal geometry is a branch of mathematics that has many applications in the field of discrete and continuous domains.
shima tajabadi, Bijan Ghahraman, Ali Naghi Ziaei   +2 more
doaj   +1 more source