Results 31 to 40 of about 83 (82)

Study on (r, s)-generalised transformation graphs, a novel perspective based on transformation graphs

Main Group Metal Chemistry
For a graph Q=(V,E){\mathbb{Q}}=\left({\mathbb{V}},{\mathbb{E}}), the transformation graph are defined as graphs with vertex set being V(Q)∪E(Q){\mathbb{V}}\left({\mathbb{Q}})\cup {\mathbb{E}}\left({\mathbb{Q}}) and edge set is described following ...
Ali Parvez, Baby Annmaria, Xavier D. Antony, Theertha Nair A., Ali Haidar, Kirmani Syed Ajaz K.   +5 more
doaj   +1 more source

A novel approach for feline sporotrichosis pathogen detection based on loop‐mediated isothermal amplification

Veterinary Dermatology, Volume 36, Issue 4, Page 474-484, August 2025.
Background – Sporotrichosis is a chronic, mycotic infection caused by fungi of the genus Sporothrix. Zoonotic sporotrichosis occurs mainly through S. brasiliensis transmission, resulting from the organism's traumatic introduction via scratches or bites, or contact with exudate from contaminated cats.
Steffanie Amadei, Júlia Campos, Amanda Bertão‐Santos, Alis Frentzel, Hugo Ávila, Fabiana S. Monti, Marconi R. Farias   +6 more
wiley   +1 more source

The Sanskruti index of trees and unicyclic graphs

Open Chemistry, 2019
The Sanskruti index of a graph G is defined as S(G)=∑uv∈E(G)sG(u)sG(v)sG(u)+sG(v)−23,$$\begin{align*}S(G)=\sum_{uv\in{}E(G)}{\left(\frac{s_G(u)s_G(v)}{s_G(u)+s_G(v)-2}\right)}^3, \end{align*}$$where sG(u) is the sum of the degrees of the neighbors of a ...
Deng Fei, Jiang Huiqin, Liu Jia-Bao, Poklukar Darja Rupnik, Shao Zehui, Wu Pu, Žerovnik Janez   +6 more
doaj   +1 more source

An Effective Approach in Fuzzy Graph Molecular Modeling Using Randic Index and Its Applications in Medicinal Chemistry for Parkinson’s Drugs

Journal of Mathematics, Volume 2025, Issue 1, 2025.
In graph theory, the Randic index (R) is a topological graph invariant widely used as a physicochemical descriptor in the mathematical modeling of molecular structures. However, traditional molecular graphs fail to capture the heterogeneity of chemical bonds, since they treat all edges as uniform, ignoring variations in bond lengths and strengths.
Ying Wang, Ali Asghar Talebi, Mahsa Sadeghi, Aysha Khan, Jana Shafi, Pramita Mishra   +5 more
wiley   +1 more source

Extremal Values on the General Degree–Eccentricity Index of Unicyclic Graphs of Fixed Diameter

Journal of Mathematics, Volume 2025, Issue 1, 2025.
For a connected graph G and two real numbers a, b, the general degree–eccentricity index of G is given by DEIa,bG=∑v∈VGdGavecGbv, where V(G) represent the vertex set of graph G, dG(v) denotes the degree of vertex v, and ecG(v) is the eccentricity of v in G, that is, the maximum distance from v to another vertex of G. This index generalizes several well‐
Mesfin Masre, G. Muhiuddin
wiley   +1 more source

Computing Some Topological Indices of Two Kinds of Dendrimer Graphs G[n] and H[n]

Journal of Mathematics, Volume 2024, Issue 1, 2024.
Dendrimer molecules are macromolecules which have many applications in nanosciences, drug delivery, biology, and different areas of sciences. Topological indices of chemical graph theory are numerical descriptor of a molecular structure. The dendrimer graph G[n] is obtained by attaching the new paths P9, joined each pendant vertex of G[n − 1] to ...
Hojat Kaviani, Lotfallah Pourfaraj, Huadong Su   +2 more
wiley   +1 more source

Upper bounds for the global cyclicity index

Open Mathematics
We find new upper bounds for the global cyclicity index, a variant of the Kirchhoff index, and discuss the wide family of graphs for which the bounds are attained.
Palacios José Luis
doaj   +1 more source

Synthesis and properties of octahedral silsesquioxane with vinyl acetate side group

Science and Engineering of Composite Materials
A new type of octa polyhedral oligomeric silsesquioxane (Octa DMS-POSS) has been obtained. The synthesized Octa DMS-POSS is further modified with vinyl acetate in order to obtain a vinyl acetate-polyhedral oligomeric silsesquioxane (VAPOSS) with a better
Wang Xiaorong, Wei Wenjing, Yang Yanzhe, Ma Guoyan   +3 more
doaj   +1 more source

On the multiplicative sum Zagreb index of molecular graphs

Open Mathematics
Multiplicative sum Zagreb index is a modified version of the famous Zagreb indices. For a graph GG, the multiplicative sum Zagreb index is defined as Π1*(G)=∏uv∈E(G)(dG(u)+dG(v)){\Pi }_{1}^{* }\left(G)={\prod }_{uv\in E\left(G)}\left({d}_{G}\left(u)+{d}_{
Sun Xiaoling, Du Jianwei, Mei Yinzhen
doaj   +1 more source

QSPR Analysis and Energy-Based Topological Indices of Alanine Compounds using Python Techniques

Alanine is a non-essential amino acid used in the biosynthesis of protein and it contains a carboxylic acid group and amine group. It transports nitrogen from muscles converted into glucose to the liver through the glucose-alanine cycle.
Jebena J, Mohamed Rilwan N, Divya Bharathi R   +2 more
core   +1 more source