Results 41 to 50 of about 2,263,291 (335)

Approximate solutions of the fractional damped nonlinear oscillator subject to Van der Pol system

Journal of Low Frequency Noise, Vibration and Active Control, 2023
This paper deals with fractal Van der Pol damped nonlinear oscillators equation having nonlinearity. By combining the techniques of the Laplace transform and the variational iteration method, we establish approximate periodic solutions for the fractal ...
Yanni Zhang, Zhen Zhao, Jing Pang
doaj   +1 more source

Fractal approaches to scaling transformations to sustainability

Ambio, 2023
AbstractResponses to sustainability challenges are not delivering results at the scale and speed called for by science, international agreements, and concerned citizens. Yet there is a tendency to underestimate the large-scale impacts of small-scale, local, and contextualized actions, and particularly the role of individuals in scaling transformations.
Karen O’Brien, Rosario Carmona, Irmelin Gram-Hanssen, Gail Hochachka, Linda Sygna, Milda Rosenberg   +5 more
openaire   +3 more sources

Supraparticles Composed of Graphitic Carbon Nitride Nanoparticles and Silica‐Supported Horseradish Peroxidase as Customizable Hybrid Catalysts for Photo‐Biocatalytic Cascade Reactions in Continuous Flow

Advanced Functional Materials, EarlyView.
Herein presented supraparticles combine the nanoparticulate photocatalyst graphitic carbon nitride with the enzyme horseradish peroxidase, which is immobilized on silica nanoparticles. In an optimized compatibility range, both catalysts operate effectively within the hybrid supraparticles and catalyze a cascade reaction consisting of the photocatalytic
Bettina Herbig, Egzon Cermjani, Doris Hanselmann, Johannes Prieschl, Angelika Schmitt, Michael S. Moritz, Christian Papp, Greta Nölke, Stefano Di Fiore, Christoph Deckers, Thomas H. Rehm, Susanne Wintzheimer   +11 more
wiley   +1 more source

PRESERVING LOCAL ORNAMENT THROUGH ALGORITHM

Jurnal Ilmu Komputer dan Informasi, 2013
This study employs fractal algorithms to generate and transform original Aceh ornaments into architectural design elements. The interpretation and generation of this ornaments by fractal method uses L-system based software called jBatik.
Aswin Indraprastha, Zulhadi Sahputra, Agus Suharjono   +2 more
doaj   +1 more source

Fetal Heart Sounds Detection Using Wavelet Transform and Fractal Dimension

Frontiers in Bioengineering and Biotechnology, 2017
Phonocardiography is a non-invasive technique for the detection of fetal heart sounds (fHSs). In this study, analysis of fetal phonocardiograph (fPCG) signals, in order to achieve fetal heartbeat segmentation, is proposed.
Elisavet Koutsiana, L. Hadjileontiadis, I. Chouvarda, A. Khandoker   +3 more
semanticscholar   +1 more source

Multiband Switchable Microwave Absorbing Metamaterials Based on Reconfigurable Kirigami–Origami

Advanced Functional Materials, EarlyView.
A reconfigurable metamaterial featuring tunable microwave‐absorbing and load‐bearing performance is proposed. Stretchable kirigami and bistable origami configurations are integrated as actuating components, and the synergistic deformation mechanisms are systematically analyzed.
Weimin Ding, Zhong Zhang, Zeang Zhao, Shengyu Duan, Panding Wang, Xiaogang Guo, Hongshuai Lei, Daining Fang   +7 more
wiley   +1 more source

The Realization of Multidirectional, Free‐Standing 3D Plasmonic Nanostructures via 3D Nanoprinting: A Case Study of Fractal Antennas

Advanced Functional Materials, EarlyView.
Free‐standing plasmonic gold‐based fractal antennas are fabricated by 3D nanoprinting, employing focused electron beam induced deposition and an optimized purification method to remove carbon while conserving structural fidelity. Simulation and experiment show broadband plasmonic activity, including customizable polarizability, thereby paving the way ...
Verena Reisecker, Robert Winkler, Ulrich Hohenester, Evelin Fisslthaler, Daniel Knez, Gerald Kothleitner, Georg Haberfehlner   +6 more
wiley   +1 more source

Ternary-fractional differential transform schema: theory and application

Advances in Difference Equations, 2019
In this article, we propose a novel fractional generalization of the three-dimensional differential transform method, namely the ternary-fractional differential transform method, that extends its applicability to encompass initial value problems in the ...
Feras Yousef, Marwan Alquran, Imad Jaradat, Shaher Momani, Dumitru Baleanu   +4 more
doaj   +1 more source

MPI‐Guided Photothermal Therapy of Prostate Cancer Using Stem Cell Delivery of Magnetotheranostic Nanoflowers

Advanced Functional Materials, EarlyView.
Tumor‐tropic human mesenchymal stem cells (hMSCs) were used as delivery vehicles for magnetotheranostic gold–iron oxide nanoflowers. Magnetic particle imaging of the iron component demonstrated widespread intratumoral distribution and sustained retention in contrast to injection of naked nanoflowers.
Behnaz Ghaemi, Ana Rosu, Shreyas Kuddannaya, Gautier Laurent, Rana Bazzi, Stéphane Roux, Ali Shakeri‐Zadeh, Jeff W. M. Bulte   +7 more
wiley   +1 more source

High Energy Density Asymmetric Aqueous Supercapacitor Based on a 2D Manganese Carbide as a Positive Electrode

Advanced Functional Materials, EarlyView.
A circular route, involving upcycling of waste surgical masks, affords a Mn‐based layered carbide with porosity, redox activity and low work function. These features enable its effective operation as positive supercapacitor electrode in an aqueous asymmetric supercapacitor delivering 213 Wh L−1 energy density.
Debabrata Nandi, Smita Talande, Aby Cheruvathoor Poulose, Gabor Ersek, Giuseppe Portale, Michal Otyepka, Radek Zbořil, Aristides Bakandritsos   +7 more
wiley   +1 more source