Results 31 to 40 of about 5,307,048 (221)

Second Atom-Bond Connectivity Index of Special Chemical Molecular Structures [PDF]

, 2014
In theoretical chemistry, the second atom-bond connectivity index was introduced to measure the stability of alkanes and the strain energy of cycloalkanes.
Weifan Wang, Wei Gao
core   +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

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, Faisal Sultan, El Sayed M. Tag El Din, Abdul Rauf Khan, Jia-Bao Liu, Murat Cancan   +5 more
doaj   +1 more source

On ve-degree atom-bond connectivity, sum-connectivity,geometric-arithmetic and harmonic indices of copper oxide

, 2020
Topological indices are important tools to modeling chemical properties of molecules. ve-degree based atom-bond connectivity, sum-connectivity, geometric-arithmetic, and harmonic indices are defined as their corresponding classical degree based ...
Ediz, Süleyman, Farahani, Mohammad Reza, Cancan, Murat   +2 more
core   +1 more source

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, Khalid Imran, Rahim Mohammad Tariq, Rehman Masood Ur, Ali Faisal, Salman Muhammad   +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
doaj   +1 more source

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, Muhammad Kashif Maqbool, Reny George, Austine Efut Ofem, Murat Cancan   +4 more
doaj   +1 more source

On Topological Indices for New Classes of Benes Network

Journal of Mathematics, 2021
Topological indices (TIs) transform a molecular graph into a number. The TIs are a vital tool for quantitative structure activity relationship (QSAR) and quantity structure property relationship (QSPR).
Aftab Hussain, Muhammad Numan, Nafisa Naz, Saad Ihsan Butt, Adnan Aslam, Asfand Fahad   +5 more
doaj   +1 more source

p190A/ARHGAP35 and p190B/ARHGAP5 proteins in endometrial cancer: a novel cancer‐relevant paralog interplay

Molecular Oncology, EarlyView.
This study identifies ARHGAP5, in addition to the frequently mutated ARHGAP35, as significantly mutated in endometrial cancer. Mutations in both genes co‐occur and are associated with their correlated downregulation. Functional CRISPR studies show that both paralogs regulate similar pathways, including actin cytoskeleton organization.
Mathilde Pinault, Capucine Heraud, Mélissa Correia de Oliveira, Véronique Neaud, Valérie Valesco, Valérie Prouzet‐Mauleon, Béatrice Turcq, Jean‐William Dupuy, Anne‐Aurélie Raymond, Sabrina Croce, Frédéric Saltel, Valérie Lagrée, Violaine Moreau   +12 more
wiley   +1 more source

On the eccentric atom-bond sum-connectivity index

Open Journal of Discrete Applied Mathematics
The eccentric atom-bond sum-connectivity \(\left(ABSC_{e}\right)\) index of a graph \(G\) is defined as \(ABSC_{e}(G)=\sum\limits_{uv\in E(G)}\sqrt{\frac{e_{u}+e_{v}-2}{e_{u}+e_{v}}}\), where \(e_{u}\) and \(e_{v}\) represent the eccentricities of \(u\) and \(v\) respectively. This work presents precise upper and lower bounds for the \(ABSC_{e}\) index
Zaryab Hussain, Muhammad Ahsan Binyamin
openaire   +1 more source

DIFFERENT VERSIONS OF ATOM BOND SUM CONNECTIVITY INDEX

, 2023
We introduce some new atom bond sum connectivity indices: second, third and fourth atom bond sum connectivity indices of a graph. In this paper, we compute the atom bond sum connectivity index, the second, third and fourth atom bond sum connectivity indices and neighborhood sum atom bond connectivity index of some important chemical drugs such as ...
openaire   +2 more sources