Results 91 to 100 of about 4,539,869 (304)
Inverse Problem on the Steiner Wiener Index
Discussiones Mathematicae Graph Theory, 2018 The Wiener index W(G) of a connected graph G, introduced by Wiener in 1947, is defined as W(G) =∑u,v∈V (G) dG(u, v), where dG(u, v) is the distance (the length a shortest path) between the vertices u and v in G.
I. Gutman, Xueliang Li, Y. Mao
semanticscholar +1 more source
Performance of AM fungi in peat substrates in greenhouse and field studies [PDF]
, 2008 The impacts of peat on mycorrhizal traits has been studied in several field and greenhouse experiments at MTT Agrifood Research Finland In the field experiments, AMF traits were affected by cropping systems and preceding crops but also by peat amendment.
Kukkonen, Sanna, Vestberg, Mauritz
core
Topological Point Defects in SmC* Liquid Crystals Under Mechanical Disturbance
Advanced Materials Interfaces, EarlyView.Tangetial air jet shear inducess island formation and nucleates topological point defects in uniform SmC films. Island bounded by edge dislocation loops shrink and transform into isolated point defects under continued shear. Mechanical perturbatio provides a controllable route for defect engineering in smectric liquid crystal thin films.
Gunganist Kongklad +3 more
wiley +1 more source
Advanced Materials Technologies, EarlyView.This study presents a novel platform for assessing the active mechanical behavior of living cardiac microbundles through localized nanoindentation, integrated with temperature regulation and dual‐camera imaging systems. The developed system enables quantitative evaluation of dynamic micromechanics in engineered cardiac tissues in vitro, offering ...
Lihua Lou +4 more
wiley +1 more source
On the Randi\'{c} index and conditional parameters of a graph [PDF]
, 2013 The aim of this paper is to study some parameters of simple graphs related with the degree of the vertices. So, our main tool is the $n\times n$ matrix ${\cal A}$ whose ($i,j$)-entry is $$ a_{ij}= \left\lbrace \begin{array}{ll} \frac{1}{\sqrt{\delta_i ...
Rodríguez, J. A., Sigarreta, J. M.
core
Additively Manufactured Porous Ceramics as Tunable Dielectrics for Passive Temperature Sensing
Advanced Materials Technologies, EarlyView.Porous ceramic lattices, 3D‐printed from a multicomponent oxide ink, are integrated with LC resonators for passive wireless temperature sensing. By tuning porosity, the dielectric properties and RF response are engineered to produce distinct resonant frequency shifts with temperature. The results establish a structure‐driven approach to customizing the
Sogol Heidarishahrivar +5 more
wiley +1 more source
Steiner Wiener index of block graphs
AKCE International Journal of Graphs and Combinatorics, 2020 Let S be a set of vertices of a connected graph G. The Steiner distance of S is the minimum size of a connected subgraph of G containing all the vertices of S.
Matjaž Kovše +2 more
doaj +1 more source
Tunable Applicator for Microneedle‐Based Medical Devices
Advanced Materials Technologies, EarlyView.This paper presents a simple, low‐cost tunable applicator (TAPP) for microneedle array patches that uses a material‐agnostic controlled‐fracture mechanism to ensure reliable skin penetration and uniform array engagement. The scalable, modular design is compatible with injection molding and 3D printing, can be integrated directly into patches, and is ...
Dan Ilyn +9 more
wiley +1 more source
Advanced Optical Materials, EarlyView.It is demonstrated that in chiral ferroelectric nematic liquid crystals sandwiched between electrically conducting transparent plates, the reflection color can be reversibly tuned by electric fields applied along the helix axis. The proposed theoretical model, assuming field‐induced coiling of the helix axis, accounts for all observations.
Md Sakhawat Hossain Himel +5 more
wiley +1 more source
Wiener Index of Edge Thorny Graphs of Catacondensed Benzenoids
Mathematics, 2020 The Wiener index is a topological index of a molecular graph, defined as the sum of distances between all pairs of its vertices. Benzenoid graphs include molecular graphs of polycyclic aromatic hydrocarbons.
Andrey A. Dobrynin, Ali Iranmanesh
doaj +1 more source