Results 31 to 40 of about 11,826 (248)
Computation of M-Polynomial and Topological Indices of Phenol Formaldehyde
Journal of Chemistry, 2022 Phenol formaldehyde (phenolic resin) has a wide range of moldings. However, it has immense consumption in manufacturing electrical equipment due to its insulating property.
Muhammad Kamran +5 more
doaj +1 more source
Bounds for the atom-bond sum-connectivity index of graphs
, 2023 Abstract The atom-bond sum-connectivity (ABSC) index of a graph G is defined as ABSC(G) = uv∈E(G) du+dv−2 du+dv , where d u and d v represent the degrees of u and v in G, respectively. In this paper, we give some sharp bounds for the ABSC index in term of the first Zagreb index, the harmonic index, the sum-connectivity index, the minimum and ...
Zaryab Hussain +3 more
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Molecules, 2022 Entropy is a thermodynamic function in chemistry that reflects the randomness and disorder of molecules in a particular system or process based on the number of alternative configurations accessible to them.
Muhammad Usman Ghani +5 more
doaj +1 more source
First principles study of a sodium borosilicate glass-former II: The glass state [PDF]
, 2014 We use ab initio simulations to investigate the properties of a sodium borosilicate glass of composition 3Na_2O-B_2O_3-6SiO_2. We find that the broadening of the first peak in the radial distribution functions g_BO(r) and g_BNa(r) is due to the presence ...
Ispas, Simona +2 more
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Some Topological Indices Computing Results If Archimedean Lattices L(4,6,12) [PDF]
, 2019 The introduction of graph-theoretical structure descriptors represents an important step forward in the research of predictive models in chemistry and falls within the lines of the increasing use of mathematical and computational methods in contemporary ...
Kang Qiong, Xinting Li
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Eccentric topological properties of a graph associated to a finite dimensional vector space
Main Group Metal Chemistry, 2020 A topological index is actually designed by transforming a chemical structure into a number. Topological index is a graph invariant which characterizes the topology of the graph and remains invariant under graph automorphism.
Liu Jia-Bao +5 more
doaj +1 more source
Comparative Study of Y-Junction Nanotubes with Vertex-Edge Based Topological Descriptors
Journal of Mathematics, 2022 The current results of various forms of carbon nanostructures and its applications in different areas attract the researchers. In pharmaceutical, medicine, industry and electronic devices they used it by its graphical invariants.
Al-Nashri Al-Hossain Ahmad
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Entropies Via Various Molecular Descriptors of Layer Structure of H3BO3
Mathematics, 2022 Entropy is essential. Entropy is a measure of a system’s molecular disorder or unpredictability, since work is produced by organized molecular motion.
Muhammad Usman Ghani +4 more
doaj +1 more source
, 2013 Interrelated Two-way Clustering (ITC) is an unsupervised clustering method developed to divide samples into two groups in gene expression data obtained through microarrays, selecting important genes simultaneously in the process.
Basak, Subhash C. +2 more
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Performance of 3D-space-based atoms-in-molecules methods for electronic delocalization aromaticity indices [PDF]
, 2010 Several definitions of an atom in a molecule (AIM) in three-dimensional (3D) space, including both fuzzy and disjoint domains, are used to calculate electron sharing indices (ESI) and related electronic aromaticity measures, namely, Iringand multicenter ...
Bultinck, Patrick +4 more
core +1 more source