Results 31 to 40 of about 1,161 (229)

On the complexity of some hop domination parameters

Electronic Journal of Graph Theory and Applications, 2019
A hop Roman dominating function (HRDF) on a graph G = (V, E) is a function f : V → {0, 1, 2} having the property that for every vertex v ∈ V with f(v) = 0 there is a vertex u with f(u) = 2 and d(u, v) = 2. The weight of an HRDF f is the sum of its values
Nader Jafari Rad, Elahe Shabani
doaj   +1 more source

Proximity‐Tuned Magnetic and Transport Anomalies in All‐Epitaxial Fe5−xGeTe2/WSe2 Van der Waals Heterostructures

Advanced Functional Materials, EarlyView.
All‐epitaxial and scalable ferromagnetic/non‐magnetic Fe5−xGeTe2/WSe2 van der Waals (vdW) heterostructures exhibiting room‐temperature magnetism and perpendicular magnetic anisotropy (PMA) are realized. The system displays proximity‐tuned magnetic anisotropy, thickness‐dependent unconventional Hall effects, and temperature‐dependent sign reversal of ...
Hua Lv, Tauqir Shinwari, Kacho Imtiyaz Ali Khan, Jens Herfort, Chen Chen, Joan M. Redwing, Mehak Loyal, Gerhard Jakob, Mathias Kläui, Achim Trampert, Bernat Mundet, Belén Ballesteros, Manfred Ramsteiner, Roman Engel‐Herbert, Michael Hanke, João Marcelo J. Lopes   +15 more
wiley   +1 more source

Molecular Basis of NPY Recognition and Ligand Selectivity at the Neuropeptide Y5 Receptor

Angewandte Chemie, EarlyView.
Here, we present the first active structure of the neuropeptide Y5 receptor (NPY5R) in complex with its endogenous ligand NPY and the Gi1 protein. The cryo‐electron microscopy structure, validated by extensive mutagenesis studies, gives important insights into the molecular mechanisms underlying ligand binding and receptor activation.
Lisa Christin Peuker, Hongyu Wang, Kun Chen, Kristin Löbner, Karin Mörl, Simon Jonas Schwarz, Qiang Zhao, Beili Wu, Annette Gabriele Beck‐Sickinger   +8 more
wiley   +2 more sources

The Distance Roman Domination Numbers of Graphs

Discussiones Mathematicae Graph Theory, 2013
Let k be a positive integer, and let G be a simple graph with vertex set V (G). A k-distance Roman dominating function on G is a labeling f : V (G) → {0, 1, 2} such that for every vertex with label 0, there is a vertex with label 2 at distance at most k ...
Aram Hamideh, Norouzian Sepideh, Sheikholeslami Seyed Mahmoud   +2 more
doaj   +1 more source

The Double Roman Domatic Number of a Digraph

Discussiones Mathematicae Graph Theory, 2020
A double Roman dominating function on a digraph D with vertex set V (D) is defined in [G. Hao, X. Chen and L. Volkmann, Double Roman domination in digraphs, Bull. Malays. Math. Sci. Soc. (2017).] as a function f : V (D) → {0, 1, 2, 3} having the property
Volkmann Lutz
doaj   +1 more source

Total double Roman domination in graphs [PDF]

Communications in Combinatorics and Optimization, 2020
Let $G$ be a simple graph with vertex set $V$. A double Roman dominating function (DRDF) on $G$ is a function $f:V\rightarrow\{0,1,2,3\}$ satisfying that if $f(v)=0$, then the vertex $v$ must be adjacent to at least two vertices assigned $2$ or one ...
Guoliang Hao, Lutz Volkmann, Doost Ali Mojdeh   +2 more
doaj   +1 more source

Demonstration of a Two‐Electron Pathway in Piezoelectric Mechanochemistry: Synthesis and Mechanical Adaptation of Polythiourethane

Angewandte Chemie, EarlyView.
A mechano‐triggered polythiourethane (PTU) synthesis mediated by a two‐electron pathway. The polymerization proceeds efficiently (<1 h) under focused ultrasound, achieving >90% conversion without any conventional base catalyst. The approach demonstrates broad compatibility with various thiol/isocyanate monomer combinations, highlighting its synthetic ...
Yixiao Dong, Farsa Ram, John Brownridge, Thalia Haines, Pin‐Ruei Huang, María José Román‐Vasquez, Jun Wang, Aaron P. Esser‐Kahn   +7 more
wiley   +2 more sources

Transposable Element Dynamics Drive the Genomic Evolution and Phenotypic Diversification of Allotetraploid Common Carp

Advanced Science, EarlyView.
By integrating 516 whole‐genome resequencing datasets and 236 transcriptomes of allotetraploid common carp, this study establishes the first population‐scale atlas of transposable element (TE) variation in teleost species. TE bursts, relaxed purifying selection, and lineage‐specific loss of ancient insertions shape genome evolution and phenotypic ...
Shuimu Hu, Zhou Jiang, Lin Chen, Gowena Ling Yi Goh, Weijing Li, Qian He, Xintong Chen, Rui Li, Yuxuan Liu, Ning Li, Tao Zhou, Peng Xu   +11 more
wiley   +1 more source

Elucidating Liquid‐Phase Guest Transport Across MOF Single Crystals: Interplay of Adsorption, Desorption, and Intracrystalline Diffusion

Angewandte Chemie, EarlyView.
Guest transport across metal–organic framework (MOF) single crystals disentangles transport occurring through the micropores from contributions at grain boundaries. Even guest molecules with identical kinetic diameters show drastically different transport behavior arising from the distinct modes of adsorption. Neither pore clogging nor surface collapse
Hochul Woo, Hans Roman Cortina, Adam J. Matzger   +2 more
wiley   +2 more sources

On outer-convex Roman dominating function in graphs

The American Journal of Combinatorics
Let \(G = (V(G), E(G))\) be a connected graph and let \(\phi:V(G)\rightarrow \{0,1,2\}\) be a Roman dominating function (RDF) on \(G\). For each \(j \in \{0, 1, 2\}\), let \(V_j=\{x \in V(G): \phi(x)=j\}\).
Leomarich Casinillo
doaj   +1 more source