Results 71 to 80 of about 571,031 (268)
Pharmaceutical Sciences and Research, 2014 Purple sweet potatoes leaves (Ipomoea batatas (L.) Lamk) Antin 3 variety (IBLA) are natural antioxidant sources because of its anthocyanins contents. IBLA was extracted with kinetic maseration method using 70% ethanolic solution.
Damaranie Dipahayu +2 more
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The Geometry of Bezier Curves in Minkowski 3−Space
Universal Journal of Mathematics and Applications, 2023 The scope of this paper is to look at some aspects of the differential geometry of Bezier curves in Minkowski space. For that purpose, we firstly introduce Frenet Bezier curve in Minkowski 3-space.
Ayşe Yılmaz Ceylan
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Geometric Analysis of Seed Shape Diversity in the Cucurbitaceae
Seeds, 2023 The Cucurbitaceae is a monophyletic family with close to 1000 species of climbers, including important agronomic species and varieties characterized by tendrils and pepo fruits.
José Javier Martín-Gómez +4 more
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Geometric realizations of curvature models by manifolds with constant scalar curvature [PDF]
arXiv, 2008 We show any Riemannian curvature model can be geometrically realized by a manifold with constant scalar curvature. We also show that any pseudo-Hermitian curvature model, para-Hermitian curvature model, hyper-pseudo-Hermitian curvature model, or hyper-para-Hermitian curvature model can be realized by a manifold with constant scalar and *-scalar ...
arxiv
International Journal of Smart and Nano Materials, 2015 Dielectric elastomers are widely investigated as soft electromechanically active polymers (EAPs) for actuators, stretch/force sensors, and mechanical energy harvesters to generate electricity.
Bin Chen +4 more
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Liquid crystal director fields in three-dimensional non-Euclidean geometries
New Journal of Physics, 2020 This paper investigates nematic liquid crystals in three-dimensional curved space, and determines which director deformation modes are compatible with each possible type of non-Euclidean geometry. Previous work by Sethna et al showed that double twist is
Jean-François Sadoc +2 more
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Riemannian Submersions Need Not Preserve Positive Ricci Curvature [PDF]
arXiv, 2012 If $\pi :M\rightarrow B$ is a Riemannian Submersion and $M$ has positive sectional curvature, O'Neill's Horizontal Curvature Equation shows that $B$ must also have positive curvature. We show there are Riemannian submersions from compact manifolds with positive Ricci curvature to manifolds that have small neighborhoods of (arbitrarily) negative Ricci ...
arxiv
Curvature and solidification [PDF]
Journal of Computational Physics, 1985 A method is presented for finding the osculating circle, and thus the curvature and the normal, of a curve defined by an array of partial volumes. This method is applied, within the framework of an enthalpy formulation, to the solutions of model equations that describe the motion of a front separating ice and supercooled water.
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Curvature: A Variational Approach [PDF]
Memoirs of the American Mathematical
Society, 2018 120 pages, 12 figures, (v2) minor revision; (v3) new sections on Finsler manifolds, slow growth distributions, Heisenberg group; (v4) major revision, new extended section on 3D contact structures, constant curvature, improved results about existence of ample geodesics on SR structures, 2 new appendices, many minor revisions; (v5) 1 new appendix, minor ...
Luca Rizzi +4 more
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Molecules, 2020 The flow of nanofluid over a curved Riga surface is a topic of interest in the field of fluid dynamics. A literature survey revealed that the impacts of freezing temperature and the diameter of nanoparticles on the heat transfer over a curved Riga ...
Adnan +7 more
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