Results 51 to 60 of about 25,433 (194)

Investigation of Dendrimer Structures by Means of K-Banhatti Invariants

open access: yesJournal of Mathematics, 2022
Dendrimers are highly branched macromolecules. The structural chemistry of dendrimers could be shaped by their topological invariants to target the particular design with appropriate properties to bring the drugs to mark a carrier vehicle.
Cheng-Gang Huo   +3 more
doaj   +1 more source

Valence connectivity versus Randic, Zagreb and modified Zagreb index: A linear algorithm to check discriminative properties of indices in acyclic molecular graphs [PDF]

open access: yes, 2004
Valence connectivity in molecular graphs is described by 10-tuples mu(ij) where mu(ij) denotes the number of edges connecting vertices of valences i and j.
Graovac, Ante, Vukičević, Damir
core   +1 more source

Generalizations of Wiener polarity index and terminal Wiener index

open access: yes, 2012
In theoretical chemistry, distance-based molecular structure descriptors are used for modeling physical, pharmacologic, biological and other properties of chemical compounds.
Ilic, Aleksandar, Ilic, Milovan
core   +1 more source

Counting relations for general Zagreb indices [PDF]

open access: yesKragujevac Journal of Mathematics, 2014
The first and second general Zagreb indices of a graph G, with vertex set V and edge set E, are defined as Mk1=Σuєv d(u)k and Mk2=ΣuvєE [d(u)d(v)]k where d(v) is the degree of the vertex v of G. We present combinatorial identities, relating Mk1 and Mk2 with counts of various subgraphs contained in the graph G.
Britto Antony Xavier G.   +2 more
openaire   +2 more sources

Present and future downslope windstorms in the Scandinavian Mountains from a kilometre‐scale climate model

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
Kilometre‐scale climate simulations for Scandinavia indicate the importance of high resolution for reproducing downslope windstorms (DWs). Scandinavian DWs on average induce a limited local warming but with large variability due to the region's complex orography.
Patrik Jureša   +5 more
wiley   +1 more source

Modeling benzene physicochemical properties using Zagreb upsilon indices

open access: yesOpen Chemistry
Quantitative structure–property relationship (QSPR) frameworks leverage topological indices to model the physicochemical attributes of molecular structures.
Çiftçi İdris   +2 more
doaj   +1 more source

Meander‐Bend Erosion Dynamics Along a Gravel‐Bed River: Insights From Short‐Term UAV Monitoring

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT Riverbank erosion is a natural process in meandering rivers that contributes to sediment supply and geomorphic diversity, yet it can threaten infrastructure and human activities within the floodplain. Recently, many studies have used high‐resolution remote sensing technologies to measure bank erosion, but they often focus on technical aspects ...
Katarina Pavlek   +2 more
wiley   +1 more source

Cameras do not always take a full picture: wolf activity patterns revealed by accelerometers versus road‐positioned camera traps

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Camera traps have become an increasingly popular non‐invasive alternative to animal‐attached devices for studying wildlife behaviour. This study compared wolf (Canis lupus) activity patterns derived from collar accelerometers and road‐positioned camera traps and revealed strong overall agreement but also important seasonal and diel mismatches between ...
Katarzyna Bojarska   +7 more
wiley   +1 more source

Zagreb Connection Indices of Molecular Graphs Based on Operations

open access: yesComplexity, 2020
Topological index (numeric number) is a mathematical coding of the molecular graphs that predicts the physicochemical, biological, toxicological, and structural properties of the chemical compounds that are directly associated with the molecular graphs ...
Jinde Cao   +3 more
doaj   +1 more source

Zagreb Topological indices for hexadentate 3-hydroxypyridinones-terminated dendrimers used in iron binding and anti-microbial activities

open access: yesRuhuna Journal of Science, 2020
Among the degree based topological indices which are mostly used in the study of chemical graph theory, the Zagreb index plays a prominent role in the study of therapies and treatments.
Thayamathy Pio Jude   +2 more
doaj   +1 more source

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