Results 21 to 30 of about 722,873 (188)

Study of Neighborhood Degree-Based Topological Indices via Direct and NM-Polynomial of Starphene Graph

Journal of Function Spaces, 2022
Our objective is to compute the neighborhood degree-based topological indices via NM-polynomial for starphene. In the neighborhood degree-based topological indices, we compute the third version of the Zagreb index; neighborhood second Zagreb index ...
Deeba Afzal, Saira Hameed, Usman Ashraf, Arif Mehmood, Faryal Chaudhry, Dhan Kumari Thapa   +5 more
doaj   +1 more source

Computing Topological Descriptors and Polynomials of Certain 2D Chemical Structures

Journal of Chemistry, 2021
In the fields of mathematical chemistry, a topological index, also known as a connectivity index, is a type of a molecular descriptor that is calculated based on the molecular graph of a chemical compound.
Muhammad Mubashir Izhar, Zahida Perveen, Dalal Alrowaili, Mehran Azeem, Imran Siddique, Shahid Imran, Muhammad Shoaib Sardar   +6 more
doaj   +1 more source

Novel Degree-Based Topological Descriptors of Fenofibrate Using M-Polynomial

Journal of Mathematics, 2023
Chemical graph theory is currently expanding the use of topological indices to numerically encode chemical structure. The prediction of the characteristics provided by the chemical structure of the molecule is a key feature of these topological indices ...
Muhammad Kamran, Muhammad Farman, Seyma Ozon Yildirim, Sadik Delen, Ismail Naci Cangul, Maria Akram, M. K. Pandit   +6 more
doaj   +1 more source

Clinical Features, Treatments, and Outcomes of an International Cohort of 96 Children with Takayasu Arteritis. [PDF]

ACR Open Rheumatol
Objective To characterize the clinical features, treatment, and outcomes of a large, international cohort of childhood‐onset Takayasu arteritis (cTAK). Methods Patients with a diagnosis of cTAK were identified in A Registry of Childhood Vasculitis and divided into subcohorts by era‐of diagnosis: pre‐biologic (PB; 1986–2006), early biologic (EB; 2007 ...
Bistolarides J, Morishita KA, Sivaraman V, Wagner-Weiner L, Bosman ES, McPhate N, Nocton JJ, Liegl M, Pan AY, Beresford MW, Charuvanij S, de Guzman M, Elder M, Giani T, Gagne S, Harrison K, James K, Jelusic M, Khan A, Martin N, Park J, Rosenberg AM, Shenoi S, Tanner T, Tarvin SE, Twilt M, Yeung RSM, Brown K, Cabral D, ARCHiVe Investigators Network within the PedVas Initiative and the CARRA Chronic Childhood Vasculitis workgroup.   +29 more
europepmc   +2 more sources

Polynomials and General Degree-Based Topological Indices of Generalized Sierpinski Networks

Complexity, 2021
Sierpinski networks are networks of fractal nature having several applications in computer science, music, chemistry, and mathematics. These networks are commonly used in chaos, fractals, recursive sequences, and complex systems.
Chengmei Fan, M. Mobeen Munir, Zafar Hussain, Muhammad Athar, Jia-Bao Liu   +4 more
doaj   +1 more source

Comparative Study of Certain Synthetic Polymers via Bond-Additive Invariants

IEEE Access, 2021
Polymers, like vulcanized rubber, bakelite, and poly-methyl methacrylate (PMMA), are widely utilized as denture based materials, and their prominence has been nothing short of excellent. Recently, Ahmad et al.
Maqsood Ahmad, Muhammad Saeed, Muhammad Javaid   +2 more
doaj   +1 more source

Population Density and Spatial-Temporal Niche Use of Ship Rats and Italian Wall Lizards on a Small Adriatic Island. [PDF]

Ecol Evol
We quantified population density and spatial–temporal niche use of ship rats (Rattus rattus) and Italian wall lizards (Podarcis siculus) on a small uninhabited Adriatic islet using spatially explicit capture–recapture, distance sampling, and camera trapping.
Perinović M, Gojak T, Glogoški M, Pavin L, Čižmek H, Lisičić D.   +5 more
europepmc   +2 more sources

Computation of Zagreb Polynomials and Zagreb Indices for Benzenoid Triangular & Hourglass System

Polycyclic Aromatic Compounds, 2022
In this article, we study benzenoid Triangular system and benzenoidHourglass system and we compute Zagreb polynomials for benzenoidTriangular system and benzenoid Hourglass system and from these Zagrebpolynomials we catch up degree based Zagreb indices.
Yu-Ming Chu, Abdul Rauf Khan, Muhammad Usman Ghani, Abdul Ghaffar, Mustafa Inc   +4 more
openaire   +1 more source

M-Polynomials and Degree-Based Topological Indices of the Molecule Copper(I) Oxide

Journal of Chemistry, 2021
Topological indices are numerical parameters used to study the physical and chemical residences of compounds. Degree-based topological indices have been studied extensively and can be correlated with many properties of the understudy compounds.
Faryal Chaudhry, Iqra Shoukat, Deeba Afzal, Choonkil Park, Murat Cancan, Mohammad Reza Farahani   +5 more
doaj   +1 more source

Closed Formulas for Some New Degree Based Topological Descriptors Using M-polynomial and Boron Triangular Nanotube

Frontiers in Chemistry, 2021
In this article, we provide new formulas to compute the reduced reciprocal randić index, Arithmetic geometric1 index, SK index, SK1 index, SK2 index, edge version of the first zagreb index, sum connectivity index, general sum connectivity index, and the ...
Dong Yun Shin, Sabir Hussain, Farkhanda Afzal, Choonkil Park, Deeba Afzal, Mohammad R. Farahani   +5 more
doaj   +1 more source