Results 41 to 50 of about 4,247,919 (214)
New inequalities involving the Geometric-Arithmetic index
, 2016 Let $G=(V,E)$ be a simple connected graph and $d_i$ be the degree of its $i$th vertex. In a recent paper [J. Math. Chem. 46 (2009) 1369-1376] the first geometric-arithmetic index of a graph $G$ was defined as $$GA_1=\sum_{ij\in E}\frac{2 \sqrt{d_i d_j}}{d_i + d_j}.$$ This graph invariant is useful for chemical proposes.
Rodríguez, J. M. +2 more
openaire +6 more sources
Advanced Engineering Materials, EarlyView.CT‐based finite element simulations combined with in situ X‐ray computed tomography are used to analyze insert pull‐out in nickel‐coated polymer foams. Despite variations in material parameters, deformation consistently concentrates within a narrow annular region around the insert.
Yannik Bautz +4 more
wiley +1 more source
Ciência Florestal, 2018 Differences in seed morphology may indicate variability within and among plant populations. Seeds of Annona reticulata Vell., Annonaceae were biometrically characterized, came from the Rio Brilhante region, Mato Grosso do Sul state, in a fragmented area ...
Montcharles da Silva Pontes +3 more
doaj +1 more source
Computation of M-Polynomial and Topological Indices of Phenol Formaldehyde
Journal of Chemistry, 2022 Phenol formaldehyde (phenolic resin) has a wide range of moldings. However, it has immense consumption in manufacturing electrical equipment due to its insulating property.
Muhammad Kamran +5 more
doaj +1 more source
Geometric means provide a biased efficacy result when conducting a faecal egg count reduction test (FECRT) [PDF]
, 2009 The process of conducting a faecal egg count reduction test was simulated to examine whether arithmetic or geometric means offer the best estimate of efficacy in a situation where the true efficacy is known.
Besier, R.B. +3 more
core
Morphology, Transport, and Dynamics of Protein Adsorption in Open‐Cell Metal Foam
Advanced Engineering Materials, EarlyView.Stainless steel (SS) open‐cell foams are shown to adsorb more protein per unit area than previously reported 316L SS and chromium oxide surfaces under static and flow conditions. An integrated approach combining 3D pore imaging, flow simulation, and protein adsorption experiments characterizes the foam’s performance.
Chinmaya Prerana Inguva +2 more
wiley +1 more source
On two inequalities for the composition of arithmetic functions [PDF]
, 2012 A paper about two inequalities for the composition of arithmetic ...
József Sándor, Sandor, Jozsef
core +1 more source
MULTIPLICATIVE GEOMETRIC ARITHMETIC INDEX FOR VARIOUS GRAPHS
, 2021 A topological index, also known as connectivity index, is a molecular structuredescriptor calculated from a molecular graph of a chemical compound which characterizes itstopology.
Pavithra. M
core +1 more source
A Novel Approach to Estimate the Transition Temperature via Dynamic Nanoindentation
Advanced Engineering Materials, EarlyView.A new dynamic nanoindentation‐based method was developed that uses the stiffness ratio as an indicator of the elastic–plastic deformation contributions at different temperatures. The approach successfully identified transition temperatures in ferritic steel and distinguished them from continuously ductile austenitic steel.
Stefan Zeiler +4 more
wiley +1 more source
Computing multiple ABC index and multiple GA index of some grid graphs
Open Physics, 2018 Topological indices are the atomic descriptors that portray the structures of chemical compounds and they help us to anticipate certain physico-compound properties like boiling point, enthalpy of vaporization and steadiness.
Gao Wei +3 more
doaj +1 more source