Results 91 to 100 of about 776,655 (324)

Toward Enhancing Chiro‐Optical and Magneto‐Optical Properties of Magnetic Nanocrystals by Surface Plasmons

open access: yesAdvanced Optical Materials, EarlyView.
Here, recent progress is highlighted in colloidal magnetoplasmonic hybrid nanomaterials, with a focus on chiral plasmonics. Metal nanocrystals with intrinsic chiroptical features can lead to a combination of chiral plasmonics and magneto‐optics effects when interacting with the magnetic counterpart, offering a foundation for systematically designing ...
Miguel Comesaña‐Hermo   +4 more
wiley   +1 more source

Outer Independent Double Roman Domination Stability in Graphs

open access: yesArs combinatoria
An outer independent double Roman dominating function (OIDRDF) on a graph G is a function f : V ( G ) → { 0 , 1 , 2 , 3 } having the property that (i) if f ( v ) = 0 , then the vertex v must have at least two neighbors assigned 2 under f or one neighbor ...
S. Sheikholeslami   +2 more
semanticscholar   +1 more source

Ultrasound‐Stimulated Luminescence from Mn2+‐Activated Crystal‐Free Germanate Glasses Charged by Sunlight

open access: yesAdvanced Photonics Research, EarlyView.
Crystal‐free glasses are demonstrated which exhibit ultrasound‐stimulated light emission. This opens the world of glasses to applications ranging from remotely triggered local light delivery to advanced sensing, thereby benefitting from universal shaping ability and versatile chemical formulations.
Jiangkun Cao   +8 more
wiley   +1 more source

A note on Roman domination in graphs

open access: yesDiscrete Mathematics, 2006
AbstractLet G=(V,E) be a simple graph. A subset S⊆V is a dominating set of G, if for any vertex u∈V-S, there exists a vertex v∈S such that uv∈E. The domination number of G, γ(G), equals the minimum cardinality of a dominating set. A Roman dominating function on graph G=(V,E) is a function f:V→{0,1,2} satisfying the condition that every vertex v for ...
Xin Chen, Hua-Ming Xing, Xue-Gang Chen
openaire   +1 more source

Turning Microstructure in Block Copolymer Membranes: A Facile Strategy to Improve CO2 Separation Performance

open access: yesAdvanced Science, EarlyView.
A simple and effective non‐solvent‐induced microstructure rearrangement (MSR) technique is proposed to enhance the gas separation performance of Pebax 2533 membranes. By immersing Pebax 2533 membranes in amino acid salt solutions to induce MSR, the CO2 permeability of the Pebax 2533‐GlyK 10 wt.% membrane reached 1180 Barrer.
Jing Wei   +16 more
wiley   +1 more source

The Signed Total Mixed Roman Domination Numbers of Graphs

open access: yesJournal of Physics: Conference Series
The problem of signed domination of graphs is a typical optimization problem. It requires that each vertex and edge be assigned a feasible label so that the sum of assigned labels is minimized.
Xia Hong, Li Zhang, Xiaobing Guo
semanticscholar   +1 more source

Protecting a Graph with Mobile Guards [PDF]

open access: yes, 2015
Mobile guards on the vertices of a graph are used to defend it against attacks on either its vertices or its edges. Various models for this problem have been proposed.
Klostermeyer, William F.   +1 more
core   +1 more source

Roman dominating influence parameters

open access: yesDiscrete Mathematics, 2007
AbstractA function f:V(G)→{0,1,2} is a Roman dominating function for a graph G=(V,E) if for every vertex v with f(v)=0, there exists a vertex w∈N(v) with f(w)=2. Emperor Constantine had the requirement that an army or legion could be sent from its home to defend a neighboring location only if there was a second army which would stay and protect the ...
Peter J. Slater, Robert R. Rubalcaba
openaire   +2 more sources

Multi‐Omics and ‐Organ Insights into Energy Metabolic Adaptations in Early Sepsis Onset

open access: yesAdvanced Science, EarlyView.
This study shows that patients at risk of sepsis have a distinct metabolite and lipid signature, including serine and aminoadipic acid, in their serum before clinical diagnosis. A mouse model of sepsis with a compatible serum signature reveals underlying metabolic changes, including mitochondrial adaptation, altered serine‐dependent purine metabolism ...
Lin‐Lin Xu   +9 more
wiley   +1 more source

Iovem Imperium, or Sacred Aspects of Roman “Globalization” [PDF]

open access: yes, 2014
The article deals with the question of the “globalization” project of the Roman civilization. Author asserts that the Romans had a specific “globalization” project.
Halapsis, Alex V.
core  

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