Results 91 to 100 of about 109,183 (305)

On topological descriptors of ceria oxide and their applications

open access: yesMain Group Metal Chemistry, 2021
A topological descriptor is a mathematical illustration of a molecular construction that relates particular physicochemical properties of primary molecular structure as well its mathematical depiction.
Siddiqui Muhammad Kamran   +4 more
doaj   +1 more source

The Network Analysis of Urban Streets: A Primal Approach

open access: yes, 2005
The network metaphor in the analysis of urban and territorial cases has a long tradition especially in transportation/land-use planning and economic geography.
Alexander C   +31 more
core   +2 more sources

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

open access: yesAdvanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades   +7 more
wiley   +1 more source

Bi-Distance Approach to Determine the Topological Invariants of Silicon Carbide

open access: yesمجلة بغداد للعلوم
          The use of silicon carbide is increasing significantly in the fields of research and technology. Topological indices enable data gathering on algebraic graphs and provide a mathematical framework for analyzing the chemical structural ...
Abid Mahboob   +4 more
doaj   +1 more source

M-Polynomial and Degree-Based Topological Indices

open access: yes, 2014
Let $G$ be a graph and let $m_{ij}(G)$, $i,j\ge 1$, be the number of edges $uv$ of $G$ such that $\{d_v(G), d_u(G)\} = \{i,j\}$. The {\em $M$-polynomial} of $G$ is introduced with $\displaystyle{M(G;x,y) = \sum_{i\le j} m_{ij}(G)x^iy^j}$. It is shown that degree-based topological indices can be routinely computed from the polynomial, thus reducing the ...
Klavžar, S., Deutsch, E.
openaire   +2 more sources

3D Anodic Alumina Nanoarchitectures: A Decade of Progress from Foundational Science to Functional Metamaterials

open access: yesAdvanced Materials, EarlyView.
Ordered three‐dimensional anodic aluminum oxide (3D‐AAO) nanoarchitectures with longitudinal and transverse pores enable architecture‐driven metamaterials. The review maps fabrication advances, including hybrid pulse anodization, and shows how 3D‐AAO templates tailor properties across magnetism, energy, catalysis, and sensing.
Marisol Martín‐González
wiley   +1 more source

Assembling a True “Olympic Gel” From over 16 000 Combinatorial DNA Rings

open access: yesAdvanced Materials, EarlyView.
Olympic gels are an elusive class of soft matter, consisting of molecular networks held together purely by mechanically interlocked rings. Their topological structure promises unique properties and functions, but their synthesis has proven notoriously difficult.
Sarah K. Speed   +9 more
wiley   +1 more source

On Generalized Topological Indices for Some Special Graphs

open access: yesJournal of Mathematics, 2022
Topological indices are numeric values associated with a graph and characterize its structure. There are various topological indices in graph theory such as degree-based, distance-based, and counting-related topological indices.
Sheeba Afridi   +2 more
doaj   +1 more source

Vertex-degree-based topological indices over starlike trees

open access: yesDiscrete Applied Mathematics, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Betancur, Clara   +2 more
openaire   +1 more source

Neighbourhood Degree – Based Topological Indices of Graphene Structure

open access: yesBiointerface Research in Applied Chemistry, 2021
The theory of chemical reaction networks is a branch of mathematics that aims to mimic real-world behavior. This research area has drawn many researchers' attention, primarily due to its biological and empirical chemistry applications. The fascinating problems that emerge from the mathematical structures involved have kindled the interest of pure ...
openaire   +1 more source

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