Results 21 to 30 of about 4,569,509 (132)

Reformulated Zagreb indices of thorny graphs and algorithms

Mathematics in Applied Sciences and Engineering
Molecular descriptors (graph indices) numerically describe the topologies of the chemicals. Graph indices are used to estimate certain properties of molecules. In this paper, reformulated first/second Zagreb indices for the thorny graph of any graph are
Özge ÇOLAKOĞLU
doaj   +3 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

Extremal values of the first reformulated Zagreb index for molecular trees with application to octane isomers

AIMS Mathematics, 2023
<abstract><p>A connected acyclic graph in which the degree of every vertex is at most four is called a molecular tree. A number associated with a molecular tree that can help to approximate the physical or chemical properties of the corresponding molecule is called a topological index.
Shabana Anwar, Muhammad Kamran Jamil, Amal S. Alali, Mehwish Zegham, Aisha Javed   +4 more
openaire   +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

GTI-space : the space of generalized topological indices [PDF]

, 2008
A new extension of the generalized topological indices (GTI) approach is carried out torepresent 'simple' and 'composite' topological indices (TIs) in an unified way.
Matamala, Adelio R., Estrada, Ernesto, Ramon y Cajal program Spain (Funder)   +2 more
core   +3 more sources

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

Structures devised by the generalizations of two graph operations and their topological descriptors

Main Group Metal Chemistry, 2022
Graph theory served in different fields of sciences, especially in chemistry in which creating complex structures and studying their enormous properties. Graph operation is a tool to construct complex chemical structures using basic graphs.
Raza Hassan, Waheed Muhammad, Jamil Muhammad Kamran, Azeem Muhammad   +3 more
doaj   +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

Smarandache-Zagreb Index on Three Graph Operators [PDF]

, 2010
Many researchers have studied several operators on a connected graph in which one make an attempt on subdivision of its edges. In this paper, we show how the Zagreb indices, a particular case of Smarandache-Zagreb index of a graph changes with these ...
Ranjini, P.S., Lokesha, V.
core   +1 more source