Results 131 to 140 of about 3,139,455 (314)

On edge-graceful labeling and deficiency for regular graphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2018
An edge-graceful labeling of a finite simple graph with vertices and edges is a bijection from the set of edges to the set of integers such that the vertex sums are pairwise distinct modulo , where the vertex sum at a vertex is the sum of labels of all ...
Tao-Ming Wang, Guang-Hui Zhang
doaj   +1 more source

Efficient Dynamics: Reduced‐Order Modeling of the Time‐Dependent Schrödinger Equation

open access: yesAdvanced Physics Research, EarlyView.
Reduced‐order modeling (ROM) approaches for the time‐dependent Schrödinger equation are investigated, highlighting their ability to simulate quantum dynamics efficiently. Proper Orthogonal Decomposition, Dynamic Mode Decomposition, and Reduced Basis Methods are compared across canonical systems and extended to higher dimensions.
Kolade M. Owolabi
wiley   +1 more source

Single‐Atom‐Dispersed FeNC/FeS2 Nanocluster for High‐Performance Sodium Metal Battery With Hybrid Electrochemical Behavior

open access: yesCarbon Energy, EarlyView.
A novel single‐atom‐dispersed S2–FeNC/FeS2 nanocluster heterojunction with unique hybrid electrochemical behavior for suppressing the shuttle effect and promoting the hybrid electrochemical reaction was designed, thus improving the specific capacity and cycling stability.
Yuan Liu   +11 more
wiley   +1 more source

Synergistic Fe–Si Dual‐Site Pathway Engineering in Biomass‐Derived Carbon Matrix for High‐Performance Oxygen Reduction Reaction

open access: yesCarbon Energy, EarlyView.
We report a dual‐atomic Si–Fe–N–C catalyst synthesized from nitrogen‐rich pinecones and an Fe porphyrin precursor. The inherent Si and N in pinecones form a porous Si–N–C framework that stabilizes Fe atoms during pyrolysis, yielding robust Si–Fe dual sites.
Min Su Cho   +14 more
wiley   +1 more source

Interfacial Ru–O–W Orbital Coupling Enables Lattice Oxygen Stabilization for Enhanced Acidic OER

open access: yesCarbon Energy, EarlyView.
A RuO2/WO3 electrocatalyst with strong interfacial Ru–O–W bonds exhibits optimized Ru–O interactions, enhancing intrinsic activity and stability for acidic OER. The WO3 support modulates the electronic structure of RuO2 and promotes oxo‐intermediate deprotonation, delivering a low overpotential of 203 mV at 10 mA cm−2 and sustained operation beyond 200 
Tongzhou Wang   +9 more
wiley   +1 more source

Hamiltonian cycles for finite Weyl groupoids

open access: yesJournal of Algebra and Its Applications
Let [Formula: see text] be the Cayley graph of a finite Weyl groupoid [Formula: see text]. In this paper, we show an existence of a Hamiltonian cycle of [Formula: see text] for any [Formula: see text]. We exactly draw a Hamiltonian cycle of [Formula: see text] for any (resp. some) irreducible [Formula: see text] of rank three (resp. four).
Takato Inoue, Hiroyuki Yamane
openaire   +2 more sources

A [3]Rotaxane Containing {Ti7Ga} Rings Linking CuII: Synthesis, Structure, and Spectroscopic Studies

open access: yesChemistry – A European Journal, EarlyView.
Extended hybrid inorganic‐organic [2]‐ and [3]‐rotaxanes are reported based on heterometallic rings with threads that link CuII complexes; the crystal structures are reported, and the solution behavior is investigated by double electron electron resonance spectroscopy methods.
Selena J. Lockyer   +7 more
wiley   +1 more source

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