Results 61 to 70 of about 4,059,402 (265)

Computing Topological Indices and Polynomials of the Rhenium Trioxide

Journal of Mathematics, 2022
In the study of mathematical chemistry and chemical graph theory, a topological index, also known as a connectivity index, is the arithmetical framework of a graph that specifies its topology and also graph invariant.
Shahid Imran, Muhammad Mudassar Raza, Niat Nigar, Syed Ajaz K. Kirmani, Fikre Bogale Petros   +4 more
doaj   +1 more source

Accidents in the Chemical Industry: A Scoping Review Focused on Causal Factors

American Journal of Industrial Medicine, EarlyView.
ABSTRACT Background Although occupational safety in the chemical industry is an area of ongoing research worldwide, chemical incidents continue to occur, indicating the need to review the causes, assist in safety management, and identify problems in the quality of reporting. Methods A systematic search of studies published in English between January 1,
Željka Babić, Emin Veledar, Zrinka Franić, Franka Šakić, Mojca Dobaja Borak, Lucija Šarc, Jelena Macan, Miran Brvar   +7 more
wiley   +1 more source

Zagreb-Type Indices of R-Vertex Join and R-Edge Join of Graphs

Journal of Chemistry, 2020
There are various methods available which are used to search large chemical databases and to predict the physicochemical properties of molecular structures. Using molecular descriptors for this purpose is the simplest of these methods. The Zagreb indices
Jianxin Wei, Muhammad Imran, Muhamamd Azhar Iqbal, Muhammad Asad Zaighum   +3 more
doaj   +1 more source

The Calculations of Topological Indices on Certain Networks

Journal of Mathematics, 2021
It is one of the core problems in the study of chemical graph theory to study the topological index of molecular graph and the internal relationship between its structural properties and some invariants.
Jia-Bao Liu, Ting Zhang, Sakander Hayat
doaj   +1 more source

The Role of Glutamatergic and Dopaminergic Genes in Resistant Schizophrenia: A Systematic Review

American Journal of Medical Genetics Part B: Neuropsychiatric Genetics, EarlyView.
ABSTRACT Psychosis is a heterogeneous disorder, with approximately one‐third of patients experiencing treatment resistance, predominantly among individuals diagnosed with Schizophrenia. Treatment‐resistant schizophrenia (TRS) may stem from a distinct biological signature, involving abnormalities in the dopaminergic and glutamatergic systems.
Maria Teresa Moreno‐Calle, Silvia Iñiguez‐Barrio, Maria Aurora Arrue, Leire Erkoreka   +3 more
wiley   +1 more source

On the Zagreb Index of T

Kragujevac Journal of Mathematics
A tournament is an orientation of a complete simple graph. The score of a vertex in a tournament is the out degree of the vertex. The Zagreb index of a tournament is defined as the sum of the squares of the scores of its vertices. In this paper, we obtain various lower and upper bounds for the Zagreb index of a tournament.
TARIQ AHMAD NAIKOO, BILAL AHMAD RATHER, UMA TUL SAMEE, SHARIEFUDDIN PIRZADA   +3 more
openaire   +1 more source

An insight into The Masonry Quality Index (MQI) method for the visual assessment of existing masonry structures

, 2021
A vast majority of buildings built in Croatia are masonry buildings. A fair amount of these buildings was built before the development of seismic codes.
Karlo Ožić, Renić, Tvrtko, Ožić, Karlo, Tvrtko Renić, Hafner, Ivan, Tomislav Kišiček, Ivan Hafner, Kišiček, Tomislav   +7 more
core   +1 more source

First reformulated Zagreb indices of some classes of graphs

Karpatsʹkì Matematičnì Publìkacìï, 2018
A topological index of a graph is a parameter related to the graph; it does not depend on labeling or pictorial representation of the graph. Graph operations plays a vital role to analyze the structure and properties of a large graph which is derived ...
V. Kaladevi, R. Murugesan, K. Pattabiraman   +2 more
doaj   +1 more source

Some topological properties of uniform subdivision of Sierpiński graphs

Main Group Metal Chemistry, 2021
Sierpiński graphs are family of fractal nature graphs having applications in mathematics of Tower of Hanoi, topology, computer science, and many more diverse areas of science and technology. This family of graphs can be generated by taking certain number
Liu Jia-Bao, Siddiqui Hafiz Muhammad Afzal, Nadeem Muhammad Faisal, Binyamin Muhammad Ahsan   +3 more
doaj   +1 more source

The general Zagreb index of lattice networks

CoRR, 2019
A topological index is a real number which is derived from a network or a graph by mathematically that characterizes the whole of its structural properties. Recently, there are various topological indices that have been introduced in mathematical chemistry to predict the properties of molecular topology. Among, the degree based topological indices such
Prosanta Sarkar, Nilanjan De, Anita Pal
openaire   +3 more sources