Results 271 to 280 of about 8,891,192 (320)

Effect of surface topology morphologies of silica nanocarriers on the loading of Ag nanoparticles and antibacterial performance

Journal of Alloys and Compounds, 2019
It is of very significance to study the effect of the nanostructures and topology morphologies of nanocarriers on properties and performances in order to seek for the optimal structure. Herein, we fabricated three kinds of silica nanospheres with similar
Yulu Wang, Yabin Wang, L. Su, Y. Luan, Xin Du, Xueji Zhang   +5 more
semanticscholar   +1 more source

Flattening topologically spherical surface

Journal of Combinatorial Optimization, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Danny Z. Chen, Ewa Misiolek
openaire   +2 more sources

Mechanical properties of energy-absorbing structures with triply periodic minimal surface topology

Acta Astronautica, 2017
In this work mechanical properties of structures with triply periodic minimal surface (TPMS) topology were investigated using plastic prototypes made of polylactic acid by 3D-printing process.
M. Sychov, L. A. Lebedev, S. Dyachenko, L. A. Nefedova   +3 more
semanticscholar   +1 more source

Topology of Surfaces

2001
The table below lists the number of edges, vertices, and faces of the five Platonic solids. The table shows that for each Platonic solid we have the relation Name of polyhedron Number V of vertices quotation Number E of edges Number F of faces tetrahedron 4 6 4 cube 8 12 6 ...
V. G. Boltyanskiĭ, V. A. Efremovich
openaire   +1 more source

Topological Approach to Quantum Surfaces

Communications in Mathematical Physics, 1999
A topological approach to quantisation of closed surfaces is presented. This is done by imposing the following ``minimal'' requirements for a quantisation \(R\) of a closed Riemann surface \(\Sigma\) of genus \(g\geq 2\): \(R\) is a unital \(C^*\)-algebra, both \(R\) and \(C(\Sigma)\) are fibres in a continuous family of \(C^*\)-algebras over a path ...
Natsume, Toshikazu, Nest, Ryszard
openaire   +3 more sources

Codazzi Tensors and the Topology of Surfaces

Annals of Global Analysis and Geometry, 1998
The authors introduce the notion of \((0,m)\)-Codazzi tensors relative to an affine connection which extends the well-known concept for \(m=2\). The main results are as follows. (1) Let \(M\) be a compact, oriented surface of genus \(\gamma\), and let \(g\) be a Riemannian metric on \(M\). For \(m\geq 2\) define the \(R\)-vector space \({\mathcal R}_m:
Liu, H. L., Simon, U., Wang, C. P.
openaire   +2 more sources

Corneal Surface Disease Topology

International Ophthalmology Clinics, 1998
The specific morphology and distribution of corneal surface lesions may point toward a specific diagnosis and pathogenesis in individual cases (see Fig 1). Staining lesions may be fine (e.g., staphylococcal) or punctate (e.g., keratitis sicca). The size and appearance of staining and nonstaining lesions of the epithelium and subepithelial cornea may be
P B, Marsh, I R, Schwab
openaire   +2 more sources

The Topology of Surfaces

1995
Our aim in this section is to show that a compact orientable surface is homeomorphic to a sphere with handles, under the assumption that the surface can be triangulated. The idea is to “flatten” it out, to realize the surface as a polygon in the plane, with certain identifications on the boundary edges, and then, by cutting and pasting, to simplify ...
openaire   +1 more source

A topological hierarchy for functions on triangulated surfaces

IEEE Transactions on Visualization and Computer Graphics, 2004
We combine topological and geometric methods to construct a multiresolution representation for a function over a two-dimensional domain. In a preprocessing stage, we create the Morse-Smale complex of the function and progressively simplify its topology by cancelling pairs of critical points.
Peer-Timo Bremer, Herbert Edelsbrunner, Bernd Hamann, Valerio Pascucci   +3 more
openaire   +2 more sources

Dynamics of rough surfaces with an arbitrary topology

Physical Review E, 1994
A model for kinetic growth is presented that allows for overhangs and arbitrary topologies of the growing interface. Numerical studies of the model show that with a choice of the aggregation mechanism equivalent to the one leading to the Kardar-Parisi-Zhang (KPZ) equation [Phys. Rev. Lett. 56, 889 (1986)], we indeed obtain the KPZ results.
P. Keblinski, MARITAN, AMOS, TOIGO, FLAVIO, J. Koplik, J. R. Banavar   +4 more
openaire   +2 more sources