Results 41 to 50 of about 4,295,538 (284)

Separation index of graphs and stacked 2-spheres [PDF]

open access: yes, 2015
In 1987, Kalai proved that stacked spheres of dimension $d\geq 3$ are characterised by the fact that they attain equality in Barnette's celebrated Lower Bound Theorem. This result does not extend to dimension $d=2$.
Burton, Benjamin A.   +3 more
core   +1 more source

The effect of nanocoatings enriched with essential oils on ‘Rocha’ pear long storage [PDF]

open access: yes, 2020
The effect of coating 'Rocha' pears with alginate-based nanoemulsions enriched with lemongrass essential oil (LG) or citral (Cit) was investigated. Fruit were treated with the nanoemulsions: sodium alginate 2% (w/w) + citral 1% (w/w) (Cit1%); sodium ...
Antunes, Maria Dulce   +7 more
core   +1 more source

Comparing the excepted values of atom-bond connectivity and geometric–arithmetic indices in random spiro chains

open access: yesJournal of Inequalities and Applications, 2018
The atom-bond connectivity (ABC) index and geometric–arithmetic (GA) index are two well-studied topological indices, which are useful tools in QSPR and QSAR investigations.
Shouliu Wei, Xiaoling Ke, Guoliang Hao
doaj   +1 more source

Repeated Measurements of Cardiac Biomarkers in Atrial Fibrillation and Validation of the ABC Stroke Score Over Time [PDF]

open access: yes, 2017
Background--Cardiac biomarkers are independent risk markers in atrial fibrillation, and the novel biomarker-based ABC stroke score (age, biomarkers, and clinical history of prior stroke) was recently shown to improve the prediction of stroke risk in ...
Alexander, John H.   +13 more
core   +1 more source

Antibiotic consumption in the public sector of the Limpopo province, South Africa, 2014–2018

open access: yesSouthern African Journal of Infectious Diseases, 2022
Background: Antibiotic consumption (ABC) surveillance is a critical component of the strategic priority response to the increasing antibiotic resistance threat.
Tiyani C. Mthombeni   +3 more
doaj   +1 more source

Further Properties of Trees with Minimal Atom-Bond Connectivity Index

open access: yesAbstract and Applied Analysis, 2014
Let G=(V,E) be a graph the atom-bond connectivity (ABC) index is defined as the sum of weights ((du+dv-2)/dudv)1/2 over all edges uv of G, where du denotes the degree of a vertex u of G. In this paper, we determined a few structural features of the trees
Jianping Liu, Jinsong Chen
doaj   +1 more source

Treatment patterns, adherence to international guidelines, and financial mechanisms of the market access of advanced breast cancer therapy in Bulgaria

open access: yesFrontiers in Public Health, 2023
IntroductionBreast cancer is the most common type of cancer affecting women in Europe. Advanced breast cancer (ABC) poses a significant therapeutic challenge, and therefore, timely access to treatment is crucial.
Stephanie Karanyotova   +7 more
doaj   +1 more source

Landau Level Spectrum of ABA- and ABC-stacked Trilayer Graphene [PDF]

open access: yes, 2011
We study the Landau level spectrum of ABA- and ABC-stacked trilayer graphene. We derive analytic low energy expressions for the spectrum, the validity of which is confirmed by comparison to a \pi -band tight-binding calculation of the density of states ...
G. Birkhoff   +3 more
core   +3 more sources

Computing three topological indices for Titania nanotubes TiO2[m,n]

open access: yesAKCE International Journal of Graphs and Combinatorics, 2016
A numeric quantity which characterizes the whole structure of a graph is called a topological index. The concept of Generalized Zagreb, atom–bond connectivity (ABC) and geometric–arithmetic (GA) topological indices was established in chemical graph ...
Jia-Bao Liu   +3 more
doaj   +1 more source

Cubic Matrix, Generalized Spin Algebra and Uncertainty Relation [PDF]

open access: yes, 2003
We propose a generalization of spin algebra using three-index objects. There is a possibility that a triple commutation relation among three-index objects implies a kind of uncertainty relation among their expectation values.Comment: Latex ...
Kawamura, Yoshiharu
core   +3 more sources

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