Results 11 to 20 of about 1,471 (144)

Degree-Based Topological Indices of Generalized Subdivision Double-Corona Product

Journal of Chemistry, 2022
Graph operations play an important role in constructing complex network structures from simple graphs. Computation of topological indices of these complex structures via graph products is an important task.
Ying Wang, Muhammad Waheed, Muhammad Kamran Jamil, Syed Mazhar Shah, Adnan Aslam, Hamideh Aram   +5 more
doaj   +2 more sources

Two Complex Graph Operations and their Exact Formulations on Topological Properties

Complexity, 2022
Graph operations are utilized for developing complicated graph structures from basic graphs, and these basic graphs can help to understand the properties of complex networks. While on the other side, the topological descriptor is known as a numeric value
Shehla Hameed, Muhammad Kamran Jamil, Muhammad Waheed, Muhammad Azeem, Senesie Swaray   +4 more
doaj   +2 more sources

Reformulated Zagreb Indices of Some Derived Graphs

Mathematics, 2019
A topological index is a numeric quantity that is closely related to the chemical constitution to establish the correlation of its chemical structure with chemical reactivity or physical properties.
Jia-Bao Liu, Bahadur Ali, Muhammad Aslam Malik, Hafiz Muhammad Afzal Siddiqui, Muhammad Imran   +4 more
doaj   +3 more sources

On the maximum and minimum first reformulated Zagreb index of graphs with connectivity at most k

Filomat, 2011
The authors Milicevic et al. introduced the reformulated Zagreb indices [1], which is a generalization of classical Zagreb indices of chemical graph theory. In this paper, we mainly consider the maximum and minimum for the first reformulated index of graphs with connectivity at most k. The corresponding extremal graphs are characterized.
Su, Guifu, Xiong, Liming, Xu, Lan, Ma, Beibei   +3 more
openaire   +5 more sources

European guideline on obesity care in patients with gastrointestinal and liver diseases - Joint European Society for Clinical Nutrition and Metabolism / United European Gastroenterology guideline. [PDF]

United European Gastroenterol J, 2022
Abstract Background Patients with chronic gastrointestinal (GI) disease such as inflammatory bowel disease (IBD), irritable bowel syndrome (IBS), celiac disease, gastroesophageal reflux disease (GERD), pancreatitis, and chronic liver disease (CLD) often suffer from obesity because of coincidence (IBD, IBS, celiac disease) or related pathophysiology ...
Bischoff SC, Barazzoni R, Busetto L, Campmans-Kuijpers M, Cardinale V, Chermesh I, Eshraghian A, Kani HT, Khannoussi W, Lacaze L, Léon-Sanz M, Mendive JM, Müller MW, Ockenga J, Tacke F, Thorell A, Vranesic Bender D, Weimann A, Cuerda C.   +18 more
europepmc   +2 more sources

Changes in Hungarian academic psychology after the end of “people's democracy”

Journal of the History of the Behavioral Sciences, Volume 59, Issue 1, Page 31-44, Winter 2023., 2023
Abstract The paper surveys the last 30 years of Hungarian academic psychology. Around 1989–1990, the time of the great social changes Hungarian psychology was rather Westernized, but still a relatively small scientific field and applied profession. The opening and liberalization of politics made psychology in Hungary a booming profession and a rich ...
Csaba Pléh
wiley   +1 more source

QSPR Study and Distance‐Based New Topological Descriptors of Some Drugs Used in the COVID‐19 Treatment

Journal of Mathematics, Volume 2023, Issue 1, 2023., 2023
In chemistry and medical sciences, it is essential to study the chemical, biological, clinical, and therapeutic aspects of pharmaceuticals. To save time and money, mathematical chemistry focuses on topological indices used in quantitative structure‐property relationship (QSPR) models to predict the properties of chemical structures.
Vignesh Ravi, Natarajan Chidambaram, Özge Çolakoğlu, Hanan Ahmed, Subhasri Jaganathan, Jayasri Jaganathan, G. Muhiuddin   +6 more
wiley   +1 more source

Association of hairdressing with cancer and reproductive diseases: A systematic review

Journal of Occupational Health, Volume 64, Issue 1, January/December 2022., 2022
Abstract Objectives To review recent epidemiological studies investigating carcinogenic or reprotoxic effects among hairdressers who seem to be at greater risk for systemic adverse effects of chemicals released from hair care products than consumers.
Željka Babić, Marija Macan, Zrinka Franić, Sarah Hallmann, Martin S. Havmose, Jeanne D. Johansen, Swen M. John, Cara Symanzik, Wolfgang Uter, Patricia Weinert, Henk F. van der Molen, Sanja Kezic, Rajka Turk, Jelena Macan   +13 more
wiley   +1 more source

[Retracted] The Reformulated F‐Index of Vertex and Edge F‐Join of Graphs

Journal of Chemistry, Volume 2022, Issue 1, 2022., 2022
The valency based topological indices (TIs) are defined by algebraic functions as the chemical graph theory tools in which the structural parameters are used as input and the output is related with the topology of chemical species. In theoretical chemistry, the TIs are mainly used to investigate/develop the QSAR and QSPR investigations of the molecular
Durbar Maji, Ganesh Ghorai, Faria Ahmed Shami, Haidar Ali   +3 more
wiley   +1 more source

On the Inverse Problem for Some Topological Indices

Journal of Mathematics, 2021
The study of the inverse problem (IP) based on the topological indices (TIs) deals with the numerical relations to TIs. Mathematically, the IP can be expressed as follows: given a graph parameter/TI that assigns a non-negative integer value g to every ...
Durbar Maji, Ganesh Ghorai, Muhammad Khalid Mahmood, Md. Ashraful Alam   +3 more
doaj   +1 more source