Results 31 to 40 of about 4,217,992 (292)

Chemical applications of the Laplacian spectrum. VI On the largest Laplacian eigenvalue of alkanes [PDF]

open access: yesJournal of the Serbian Chemical Society, 2002
The largest Lapacian eigenvalue µ1 of the molecular graph is a quantity important in the theory of the photoelectron spectra of saturated hydrocarbons.
Gutman Ivan   +2 more
doaj   +1 more source

A Paradigmatic Approach to Find the Valency-Based K-Banhatti and Redefined Zagreb Entropy for Niobium Oxide and a Metal–Organic Framework

open access: yesMolecules, 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

Molecular cartooning with knowledge graphs

open access: yesFrontiers in Bioinformatics, 2022
Molecular “cartoons,” such as pathway diagrams, provide a visual summary of biomedical research results and hypotheses. Their ubiquitous appearance within the literature indicates their universal application in mechanistic communication. A recent survey of pathway diagrams identified 64,643 pathway figures published between 1995 and 2019 with 1,112,551
Brook E. Santangelo   +3 more
openaire   +4 more sources

Testing the quality of molecular structure descriptors. Vertex-degree-based topological indices [PDF]

open access: yesJournal of the Serbian Chemical Society, 2013
The correlation ability of 20 vertex-degree-based topological indices, occurring in the chemical literature, is tested for the case of standard heats of formation and normal boiling points of octane isomers. It is found that the correlation ability of
Gutman Ivan, Tošović Jelena
doaj   +1 more source

Ideal Graph of a Graph [PDF]

open access: yes, 2011
In this paper, we introduce ideal graph of a graph and study some of its properties. We characterize connectedness, isomorphism of graphs and coloring property of a graph using ideal graph.
Manoharan, R., Vasuki, R.
core   +1 more source

Towards a Maude tool for model checking temporal graph properties [PDF]

open access: yes, 2011
We present our prototypical tool for the verification of graph transformation systems. The major novelty of our tool is that it provides a model checker for temporal graph properties based on counterpart semantics for quantified m-calculi.
Lluch-Lafuente, Alberto   +4 more
core   +1 more source

Rigid Components in Molecular Graphs [PDF]

open access: yesAlgorithmica, 2007
We consider three-dimensional generic bar-and-joint realizations of squares of graphs. These graphs are also called molecular graphs due to their importance in the study of flexibility in molecules. The Molecular Conjecture, posed in 1984 by T.-S. Tay and W.
Bill Jackson, Tibor Jordán
openaire   +1 more source

A graph rewriting programming language for graph drawing [PDF]

open access: yes, 1998
This paper describes Grrr, a prototype visual graph drawing tool. Previously there were no visual languages for programming graph drawing algorithms despite the inherently visual nature of the process.
Rodgers, Peter
core   +1 more source

Algorithmic graph theory for post-processing molecular dynamics trajectories [PDF]

open access: yes, 2022
This paper reviews some of the graph theory-based methods that were recently developed in our group for post-processing molecular dynamics trajectories. We show that the use of algorithmic graph theory not only provides a direct and fast methodology to
Ylene, Aboulfath   +3 more
core   +1 more source

On Irregularity Measures of Some Dendrimers Structures

open access: yesMathematics, 2019
A graph is said to be a regular graph if all its vertices have the same degree, otherwise, it is irregular. Irregularity indices are usually used for quantitative characterization of the topological structure of non-regular graphs.
Wei Gao   +4 more
doaj   +1 more source

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