Results 11 to 20 of about 297,861 (287)
Frontiers in Cell and Developmental Biology, 2023 Introduction: Periodic organ arrangements occur during growth and development and are widespread in animals and plants. In bilaterian animals, repetitive organs can be interpreted as being periodically arranged along the two-dimensional space and defined
Safiye E. Sarper +5 more
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Patterns of Symmetry Expression in Angiosperms: Developmental and Evolutionary Lability
Frontiers in Ecology and Evolution, 2020 Variation in flower symmetry is a remarkable aspect of flowering plant diversity. Multiple evolutionary transitions from an ancestral form of radial symmetry to bilateral symmetry and reversals from bilateral to radial symmetry have occurred during ...
Somayeh Naghiloo
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Radial or Bilateral? The Molecular Basis of Floral Symmetry [PDF]
Genes, 2020 In the plant kingdom, the flower is one of the most relevant evolutionary novelties. Floral symmetry has evolved multiple times from the ancestral condition of radial to bilateral symmetry. During evolution, several transcription factors have been recruited by the different developmental pathways in relation to the increase of plant complexity. The MYB
Francesca Lucibelli +2 more
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About Frequency Characteristics of Electric Fields of Cylindrical Piezoceramic Antenna with Screen in the Form of an Open Ring Layer [PDF]
Журнал нано- та електронної фізики, 2016 According to rigorous method of “related” fields the analytical expressions to describe electric fields of cylindrical piezoceramic radiators, forming flat echolocation system was obtained. As a result of numerical analysis the quantity relations and the
O.I. Nyzhnyk, A.G. Leiko
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Floral symmetry affects bumblebee approach consistency in artificial flowers
Journal of Pollination Ecology, 2016 Bilateral symmetry has evolved from radial symmetry in several floral lineages, and multiple hypotheses have been proposed to account for the success of this floral plan.
Brett Matthew Culbert, Jessica Forrest
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Fast Radial and Bilateral Symmetry Detection Using Inverted Gradient Hash Maps
EAI Endorsed Transactions on Context-aware Systems and Applications, 2017 This paper presents a fast and novel algorithm for both radial and bilateral symmetry detection based on inverted gradient hash maps (IGHMs). A hash map is an associative array that stores image gradient magnitudes and orientations in the form of an ...
R. Gonzalez, L. Lincoln
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Energy Decay in Thermoelastic Bodies with Radial Symmetry
Acta Applicandae Mathematicae, 2022 AbstractIn this paper, we consider the energy decay of some problems involving domains with radial symmetry. Three different settings are studied: a strong porous dissipation and heat conduction, a weak porous dissipation and heat conduction and poro-thermoelasticity with microtemperatures.
Noelia Bazarra +2 more
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Radially Symmetric Solution for Fractional Laplacian Systems with Different Negative Powers
Fractal and Fractional, 2022 By developing the direct method of moving planes, we study the radial symmetry of nonnegative solutions for a fractional Laplacian system with different negative powers: (−Δ)α2u(x)+u−γ(x)+v−q(x)=0,x∈RN, (−Δ)β2v(x)+v−σ(x)+u−p(x)=0,x∈RN, u(x)≳|x|a,v(x)≳|x ...
Haiyong Xu +3 more
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On the symmetry of minimizers in constrained quasi-linear problems [PDF]
, 2010 We provide a simple proof of the radial symmetry of any nonnegative minimizer for a general class of quasi-linear minimization problems.Comment: 18 ...
Squassina, Marco
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Metals, 2023 An investigation of partial radial distribution functions and atomic pair potentials within a system has established that the existing potential functions are rooted in the assumption of a static arrangement of atoms, overlooking their distribution and ...
Jiulong Hang, Dongping Tao
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