Results 71 to 80 of about 15,555,412 (284)

Fabrication of Aligned Polycaprolactone Nanofibrillar Bundles to Control Cell‐Mediated Collagen Deposition in Engineered Cartilage

open access: yesAdvanced Materials, EarlyView.
Melt electrofibrillation (MEF) enables the fabrication of nanofibrillar PCL scaffolds with defined architectures that guide cellular alignment and retention during cartilage tissue engineering. Unlike conventional melt electrowriting, MEF consistently directs collagen type II‐rich extracellular matrix organization, providing a tunable platform to ...
Alba Pueyo Moliner   +10 more
wiley   +1 more source

A characterization for the neighbor-distinguishing total chromatic number of planar graphs with Δ=13

open access: yesDiscrete Mathematics, 2018
The neighbor-distinguishing total chromatic number χ a ′ ′ ( G ) of a graph G is the smallest integer k such that G can be totally colored using k colors with a condition that any two adjacent vertices have different sets of colors.
Jing-Jing Huo, Weifan Wang, Yiqiao Wang
semanticscholar   +1 more source

3D Printed Photon Shield Assembly for Low‐Noise Visual Stimulation During Two‐Photon Imaging in Mice

open access: yesAdvanced Materials Technologies, EarlyView.
We present the Photon Shield, an open‐hardware system for low‐noise two‐photon calcium imaging during visual stimulation in mice. Combining a 3D‐printed headplate and rail‐mounted shield substantially reduces stray‐light contamination, as quantitatively verified. Functional validation confirms reliable cortical responses. Open design files enable broad
Gergely Katona   +6 more
wiley   +1 more source

Edge and total choosability of near-outerplanar graphs [PDF]

open access: yes, 2006
It is proved that, if G is a K4-minor-free graph with maximum degree ∆ ≥ 4, then G is totally (∆ + 1)-choosable; that is, if every element (vertex or edge) of G is assigned a list of ∆ + 1 colours, then every element can be coloured with a colour from ...
Woodall, DR, Hetherington, TJ
core  

Note on vertex and total proper connection numbers

open access: yesAKCE International Journal of Graphs and Combinatorics, 2016
This note introduces the vertex proper connection number of a graph and provides a relationship to the chromatic number of minimally connected subgraphs.
Emily Chizmar   +2 more
doaj   +1 more source

The List Edge Coloring and List Total Coloring of Planar Graphs with Maximum Degree at Least 7

open access: yesDiscussiones Mathematicae Graph Theory, 2020
A graph G is edge k-choosable (respectively, total k-choosable) if, whenever we are given a list L(x) of colors with |L(x)| = k for each x ∈ E(G) (x ∈ E(G) ∪ V (G)), we can choose a color from L(x) for each element x such that no two adjacent (or ...
Sun Lin   +3 more
doaj   +1 more source

Total Chromatic Number of Middle and Total Graph of Path and Sunlet Graph

open access: yes, 2018
In this paper, we have considered the finite, simple and undirected graphs. Let ( ( ), ( )) G V G E G  be a graph with the vertex set ( ) V G and the edge set ( ) E G respectively.
D. Muthuramakrishnan, G. Jayaraman
semanticscholar   +1 more source

An Examination of the Cs2NaInCl6 Luminescence: Interplay of Self‐Generated In+ and Doped Sb3+, Er3+/Yb3+ Ions

open access: yesAdvanced Optical Materials, EarlyView.
A new luminescence mechanism in Cs2NaInCl₆ is revealed through spontaneously formed In3+→In+ centers and Er3+/Yb3+/Sb3+ doping. Tunable visible, near‐infrared, downconversion, and upconversion emissions are demonstrated, while DFT calculations explain the electronic structure.
Inna A. Ivashchenko   +10 more
wiley   +1 more source

A study of the total chromatic number of equibipartite graphs [PDF]

open access: yes, 1998
The total chromatic number χt(G) of a graph G is the least number of colors needed to color the vertices and edges of G so that no adjacent vertices or edges receive the same color, no incident edges receive the same color as either of the vertices it is
Chen, Bor-Liang   +3 more
core   +1 more source

The total chromatic number of split-indifference graphs [PDF]

open access: yes, 2012
4 p. : il.The total chromatic number of a graph G, !T (G), is the least number of colours su!cient to colour the vertices and edges of a graph such that no incident or adjacent elements (vertices or edges) receive the same colour.
Figueiredo, Celina Miraglia Herrera de   +3 more
core   +2 more sources

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