Results 61 to 70 of about 28,315 (192)

On Wiener Polarity Index and Wiener Index of Certain Triangular Networks

, 2021
A topological index of graph G is a numerical quantity which describes its topology. If it is applied to the molecular structure of chemical compounds, it reflects the theoretical properties of the chemical compounds. A number of topological indices have
Syed Ahtsham Ul Haq Bokhary, Muhammad Imran, Mr. Adnan   +2 more
core   +1 more source

Relations between Wiener, hyper-Wiener and some Zagreb type indices [PDF]

Kragujevac Journal of Science, 2019
In this paper, some inequalities between the Wiener, hyper-Wiener, first Zagreb, second Zagreb, first reformulated Zagreb, second reformulated Zagreb and the general Zagreb indices of a simple graph are given.
Ghalavand Ali, Eliasi Mehdi, Ashrafi Ali Reza   +2 more
doaj  

y-Wiener index of composite graphs

, 2011
Eliasi and Taeri [Extension of the Wiener index and Wiener polynomial, Appl. Math. Lett. 21 (2008) 916–921] introduced the notion of y-Wiener index of graphs as a generalization of the classical Wiener index and hyper Wiener index of graphs.
S. Hossein-Zadeh, A. Hamzeh, Ashrafi, A.R., A.R. Ashrafi, Hossein-Zadeh, S., Hamzeh, A.   +5 more
core   +1 more source

Macrobenthic Community Structure in the Northwestern Arabian Gulf, Twelve Years after the 1991 Oil Spill

Frontiers in Marine Science, 2017
The biota in the Arabian Gulf faces stress both from natural (i.e., hyper salinity and high sea surface temperature), and human (i.e., from oil-related activities) sources. The western Arabian Gulf was also impacted by world's largest oil spill (1991 Oil
Thadickal V. Joydas, Mohammad A. Qurban, Mohammad A. Qurban, Angel Borja, Periyadan K. Krishnakumar, Abdulaziz Al-Suwailem   +5 more
doaj   +1 more source

Quantifying Cortical Maturational Aspects During Different Vigilance States in Preterm Infants by Advanced EEG Analysis

Journal of Sleep Research, EarlyView.
ABSTRACT Preterm birth is a significant risk factor for atypical neurodevelopment, yet early electrophysiological markers of brain maturation are still lacking. Non‐invasive electroencephalographic (EEG) monitoring of cortical maturation in these patients holds promise as a tool for neurodevelopmental prediction.
Gaia Burlando, Sara Uccella, Valentina Marazzotta, Sheng H. Wang, J. Matias Palva, Monica Roascio, Andrea Rossi, Luca Antonio Ramenghi, Lino Nobili, Gabriele Arnulfo   +9 more
wiley   +1 more source

Hyper- and reverse-Wiener indices of F-sums of graphs

, 2010
The Wiener index W(G)=∑{u,v}⊂V(G)d(u,v), the hyper-Wiener index WW(G)=12∑{u,v}⊂V(G)[d(u,v)+d2(u,v)] and the reverse-Wiener index Λ(G)=n(n−1)D2−W(G), where d(u,v) is the distance of two vertices u,v in G, d2(u,v)=d(u,v)2, n=|V(G)| and D is the diameter of
Duan, Fang, Metsidik, Metrose, Zhang, Weijuan   +2 more
core   +1 more source

Brain strain: Blood flow and metabolism in environmental extremes

Experimental Physiology, EarlyView.
Abstract This narrative review compares and contrasts the most commonly encountered environmental stressors on human cerebrovascular functioning. From high altitude and space, extreme apnoea, heat and cold stress, the impact of these stressors on the regulation of cerebral blood flow (CBF) and oxygen metabolism (CMRO2${\mathrm{CM}}{{\mathrm{R}}_ ...
Dario Vrdoljak, Damian M. Bailey, Travis D. Gibbons, Philip N. Ainslie   +3 more
wiley   +1 more source

-total Wiener polarity index

, 2021
This study investigates the relationship between classical degree and recently defined k-distance degree, ve-degree and ev-degree concepts in graph theory.
İdris Çiftçi, Süleyman Ediz, Çiftçi, İdris, Ediz, Süleyman, Murat Cancan, Mohammad Reza Farahani, Farahani, Mohammad Reza, Cancan, Murat   +7 more
core   +1 more source

Born early, age fast: Consequences of premature birth on chronic disease and accelerated ageing

The Journal of Physiology, EarlyView.
Abstract figure legend ELGANs are exposed to several postnatal pro‐oxidant stressors, including ambient and supplemental oxygen, mechanical ventilation, infections, hyperalimentation, excessive glucocorticoids and intermittent hypoxia. Since endogenous antioxidant defences are underdeveloped, this imbalance promotes oxidative stress and inflammation ...
Estelle B. Gauda, Julijana Ivanovska, Dwayne Mascarenhas, Jeffrey Antwi, Atefeh Mohammadi, Bonny Jasani   +5 more
wiley   +1 more source

Wiener index of Lehmer three mean graphs

, 2022
The Wiener index of W(G) is G equal to the sum of distances between all pairs of vertices of G.The Wiener index W, denoted w (wiener 1947) and also known as the path number or wiener number, is a graph index defined  by W(G) = ∑_({x,y}∈V(G))▒〖d_G (x,y)〗.
Abisha, M. J., Mary, K. Rubin
core   +2 more sources