Results 41 to 50 of about 3,892,377 (304)

Computing SS Index of Certain Dendrimers

open access: yesJournal of Mathematics, 2021
The numerical descriptor gathers the data from the molecular graphs and helps to know the characteristics of the chemical structure known as topological index.
Weidong Zhao   +4 more
doaj   +1 more source

On The Forgetten Topological Index and Co Index

open access: yesEuropean Journal of Science and Technology, 2019
G’ nin unutulmus topolojiksel indeksi 𝑑𝑖 ve 𝑑𝑗 dereceleriyle tanimlanir. Bu makalede, unutulmus topolojiksel indeksin ozdegerleri icin bazi sinirlar bulunmustur ve unutulmus Estrada topolojiksel indeks ile ilgili bazi esitsizlikler belirlenmistir.
openaire   +3 more sources

On the Computation of Some Topological Descriptors to Find Closed Formulas for Certain Chemical Graphs

open access: yesJournal of Chemistry, 2021
In this research paper, we will compute the topological indices (degree based) such as the ordinary generalized geometric-arithmetic (OGA) index, first and second Gourava indices, first and second hyper-Gourava indices, general Randic´ index RγG,for γ=±1,
Muhammad Haroon Aftab   +3 more
doaj   +1 more source

Composite Topological Objects in Topological Superfluids

open access: yes, 2020
| openaire: EC/H2020/694248/EU//TOPVACThe spontaneous phase coherent precession of magnetization, discovered in 1984 by Borovik-Romanov, Bunkov, Dmitriev, and Mukharskiy [1] in collaboration with Fomin [2], became now an important experimental tool for ...
Volovik, G. E.
core   +1 more source

Colloquium : disclination loops, point defects, and all that in nematic liquid crystals [PDF]

open access: yes, 2012
The homotopy theory of topological defects is a powerful tool for organizing and unifying many ideas across a broad range of physical systems. Recently, experimental progress was made in controlling and measuring colloidal inclusions in liquid ...
Kamien, Randall   +5 more
core   +1 more source

Ligand‐dependent transcriptional heterogeneity in cell cycle gene expression delays G1/S entry

open access: yesFEBS Letters, EarlyView.
EGF and HRG induce distinct G1/S progression programs in ErbB2‐amplified BT474 breast cancer cells. Despite activating the potent ErbB2–ErbB3 heterodimer, HRG does not accelerate cell‐cycle entry. Instead, EGF promotes earlier restriction‐point passage via ERK–FOS signaling, whereas HRG activates the AKT–MYC axis, driving transcriptional heterogeneity ...
Ririn Rahmala Febri   +5 more
wiley   +1 more source

Degree-Based Graph Entropy in Structure–Property Modeling

open access: yesEntropy, 2023
Graph entropy plays an essential role in interpreting the structural information and complexity measure of a network. Let G be a graph of order n. Suppose dG(vi) is degree of the vertex vi for each i=1,2,…,n.
Sourav Mondal, Kinkar Chandra Das
doaj   +1 more source

Smarandache-Zagreb Index on Three Graph Operators [PDF]

open access: yes, 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

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

open access: yesFEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

On the bounds of degree-based topological indices of the Cartesian product of F-sum of connected graphs

open access: yesJournal of Inequalities and Applications, 2017
Topological indices are the mathematical tools that correlate the chemical structure with various physical properties, chemical reactivity or biological activity numerically.
Muhammad Imran   +3 more
doaj   +1 more source

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