Results 11 to 20 of about 23,077,814 (292)

Deriving M-polynomial Based Topological Descriptors of Oral Antiviral Clinical Drug Nirmatrelvir

open access: yesScientific Annals of Computer Science
The novel human coronavirus known as SARS-CoV-2 poses a serious risk to human health. Regretfully, the US Food and Drug Administration (FDA) has approved very few oral antiviral medications for the treatment of COVID-19 patients. In the current study, we
Shibsankar Das, Modhuleena Mandal
doaj   +2 more sources

Evaluating the Tutte Polynomial for Graphs of Bounded Tree-Width [PDF]

open access: yes, 1998
It is known that evaluating the Tutte polynomial, $T(G; x, y)$, of a graph, $G$, is $\#$P-hard at all but eight specific points and one specific curve of the $(x, y)$-plane.
Noble, S D
core   +7 more sources

M-polynomial-based topological indices of metal-organic networks

open access: yesMain Group Metal Chemistry, 2021
Topological index (TI) is a numerical invariant that helps to understand the natural relationship of the physicochemical properties of a compound in its primary structure.
Kashif Agha   +3 more
doaj   +1 more source

Neighborhood M-polynomial of titanium compounds

open access: yesArabian Journal of Chemistry, 2021
Abstract The neighborhood M-polynomial is effective in recovering neighborhood degree sum based topological indices that predict different physical, chemical and biological characteristics of material under investigation. In this work, the neighborhood M-polynomial of Titania nanotube TiO 2 and the crystallographic structure of ...
Sourav Mondal   +3 more
openaire   +1 more source

M-Polynomials and Topological Indices of Titania Nanotubes [PDF]

open access: yesSymmetry, 2016
Titania is one of the most comprehensively studied nanostructures due to its widespread applications in production of catalytic, gas- sensing and corrosion- resistance materials [1]. M-polynomial of nanotubes has been vastly investigated as it produces many degree-based topological indices which are numerical parameters capturing structural and ...
Mobeen Munir   +4 more
openaire   +2 more sources

On topological polynomials and indices for metal-organic and cuboctahedral bimetallic networks

open access: yesMain Group Metal Chemistry, 2022
A molecular graph consists of bonds and atoms, where atoms are present as vertices and bonds are present as edges. We can look at topological invariants and topological polynomials that furnish bioactivity and physio-chemical features for such molecular ...
Yasmeen Farhana   +4 more
doaj   +1 more source

Polynomial cubic splines with tension properties [PDF]

open access: yes, 2010
In this paper we present a new class of spline functions with tension properties. These splines are composed by polynomial cubic pieces and therefore are conformal to the standard, NURBS based CAD/CAM ...
Costantini, P.   +2 more
core   +4 more sources

The M-Polynomial and Nirmala index of Certain Composite Graphs

open access: yesTikrit Journal of Pure Science, 2022
The M-Polynomial and Nirmala index are considered as two of the most recent found and important subjects in chemical graph theory. In this paper we drive and prove the computing formula of Nirmala index from the M-Polynomial, then compute the M ...
Akar H. Karim   +2 more
doaj   +1 more source

M-Polynomial and Related Topological Indices of Nanostar Dendrimers [PDF]

open access: yesSymmetry, 2016
Dendrimers are highly branched organic macromolecules with successive layers of branch units surrounding a central core. The M-polynomial of nanotubes has been vastly investigated as it produces many degree-based topological indices. These indices are invariants of the topology of graphs associated with molecular structure of nanomaterials to correlate
Mobeen Munir   +3 more
openaire   +1 more source

M-Polynomials and Associated Topological Indices of Sodalite Materials [PDF]

open access: yesMathematical Problems in Engineering, 2021
Natural zeolites are commonly described as macromolecular sieves. Zeolite networks are very trendy chemical networks due to their low-cost implementation. Sodalite network is one of the most studied types of zeolite networks. It helps in the removal of greenhouse gases.
Ghazanfar Abbas   +4 more
openaire   +1 more source

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