Results 31 to 40 of about 475,129 (368)
Nanoscale Research Letters, 2008 Abstract Self-similar patterns are frequently observed in Nature. Their reproduction is possible on a length scale 102–105 nm with lithographic methods, but seems impossible on the nanometer length scale. It is shown that this goal may be achieved via a multiplicative variant of the multi-spacer patterning technology, in this way permitting ...
Cerofolini, GF +3 more
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Minerals, 2020 The purpose of this article was to quantitatively investigate the pore structure and fractal characteristics of different lithofacies in the upper Permian Dalong Formation marine shale.
Longfei Xu +8 more
semanticscholar +1 more source
Fractal and Fractional, 2021 Magnesium oxysulfate (MOS) cement is a typical eco-friendly cementitious material, which presents excellent performances. In this work, a novel multiscale modeling strategy is proposed to simulate the hydration and pore structure of MOS cement system ...
Jiasheng Huang +10 more
semanticscholar +1 more source
Vaccines Alone Cannot Slow the Evolution of SARS-CoV-2
Vaccines, 2023 The rapid emergence of immune-evading viral variants of SARS-CoV-2 calls into question the practicality of a vaccine-only public-health strategy for managing the ongoing COVID-19 pandemic. It has been suggested that widespread vaccination is necessary to
Debra Van Egeren +7 more
doaj +1 more source
Nature Communications, 2020 Owing to the advantages of integration and being magnet-free and light-weight, the switched-capacitor-convertor plays an increasing role compared to traditional transformer in some specific power supply systems.
Wenlin Liu +10 more
semanticscholar +1 more source
Sustainability, 2021 Fractal objects are prevalent in natural scenery. Their repetition of patterns at increasingly fine magnifications creates a rich complexity. Fractals displaying mid-range complexity are the most common and include trees, clouds, and mountains.
Richard P. Taylor
semanticscholar +1 more source
Photonic Floquet topological insulators in a fractal lattice [PDF]
Light: Science & Applications, 2020 We present Floquet fractal topological insulators: photonic topological insulators in a fractal-dimensional lattice consisting of helical waveguides. The helical modulation induces an artificial gauge field and leads to a trivial-to-topological phase ...
Zhaoju Yang +3 more
semanticscholar +1 more source
Closed Contour Fractal Dimension Estimation by the Fourier Transform [PDF]
, 2011 This work proposes a novel technique for the numerical calculus of the fractal dimension of fractal objects which can be represented as a closed contour.
Beck +31 more
core +1 more source
Fractal dimension for fractal structures
Topology and its Applications, 2014 The main goal of this paper has a double purpose. On the one hand, we propose a new definition in order to compute the fractal dimension of a subset respect to any fractal structure, which completes the theory of classical box-counting dimension. Indeed, if we select the so called natural fractal structure on each euclidean space, then we will get the ...
Manuel Fernández-Martínez +1 more
openaire +3 more sources
Evaluating social learning in participatory mapping of ecosystem services
Ecosystems and People, 2019 Recent studies have shown the opportunities and limitations of participatory mapping for ecosystem services management, although it is an incipient research area. One of the research questions yet to be addressed is whether the composition of stakeholder
Ana P. García-Nieto +6 more
doaj +1 more source