Results 111 to 120 of about 4,979,723 (296)

Sub‐Nanometer Cobalt on Tungsten Titanium Carbide MXene (W2TiC2Tx): An Electrocatalyst for Highly Efficient and Stable Alkaline Hydrogen Evolution at Industrial‐Scale Current Density

open access: yesAdvanced Materials, EarlyView.
A novel W2TiC2Tx MXene prepared through a MAX‐phase route supports sub‐nanometer Co for highly efficient alkaline hydrogen evolution. Strong Co–W interfacial interactions optimize hydrogen adsorption and catalytic activity, enabling low overpotentials of 63 mV at 10 mA cm−2, small Tafel slope of 44.3 mV dec−1, and exceptional durability at industrially
Xiaopeng Liu   +15 more
wiley   +1 more source

Isospin Symmetry Violation in sd-Shell Nuclei

open access: yesEPJ Web of Conferences, 2014
We construct a new set of isospin-nonconserving (INC) shell-model Hamiltonians and apply it (i) to study the isobaric-mass multiplet equation (IMME) beyond a quadratic form in the A = 35, 3/2+ quartet, (ii) to compute the isospin mixing corrections to ...
Lam Yi Hua   +2 more
doaj   +1 more source

Choosability of graphs with infinite sets of forbidden differences

open access: yesDiscrete Mathematics, 2007
Suppose \(G\) is a (finite) graph, \(T\) is a set of non-negative integers, and for each vertex \(v\) of \(G\) we are given a set \(L(v)\) of integers. \(G\) is \(T\)-colorable from the list-assigment \(L\) if it is possible to choose for each vertex a color \(c(v)\in L(v)\) in such a way that \(\left| c(v)-c(w)\right| \not\in T\) whenever \(v\) and ...
openaire   +3 more sources

Deterministic Field‐Free Switching of Perpendicular Magnetization by Bulk Mirror Symmetry Broken Bi1−xSbx (012) with High Spin Hall Conductivity

open access: yesAdvanced Materials, EarlyView.
Crystal orientation and domain engineering enable bulk mirror symmetry breaking in Bi1−xSbx, resulting in ultralow current‐induced switching of perpendicular magnetization without an external field. By exploiting single‐domain Bi1−xSbx (012), the authors demonstrate an out‐of‐plane spin Hall conductivity of ∼1.12×105ℏ2eΩ−1m−1$ \sim \!1.12 \ensuremath ...
Seungwon Rho   +6 more
wiley   +1 more source

Explicit Solutions of a Three-dimensional System of Nonlinear Difference Equations

open access: yesHittite Journal of Science and Engineering, 2018
I n this paper, we show that the system of difference equations 1 11 0 , , , N , 111 n n nn nn n nn n n n n n n xy yz zx xyz n xy yz zx + ++ + ++ = = = ∈ +++ where the initial values xyz , , are real numbers, are solvable in explicit form via ...
Durhasan Turgut Tollu   +1 more
doaj   +1 more source

Side‐Chain‐Induced Interlayer Slipping in Metalloporphyrin COFs Enables Microenvironment and Spin‐State Regulation for Photocatalytic CO2 Reduction

open access: yesAdvanced Materials, EarlyView.
Alkoxy chain length drives a continuous transition from eclipsed AA to a serrated, slipped AA* configuration over Co‐porphyrin COFs. A moderate slip both contracts the pore channel to enrich CO2 and suppress hydrogen evolution, and enhances collective high‐spin of Co sites, which delivers a record CO production rate with high selectivity.
Jie He   +8 more
wiley   +1 more source

Fuzzy Soft Sets and its Application to Decision Making: A Short Case Study Involving the Health Sector [PDF]

open access: yes
The health sector faces uncertainty and complex decision-making scenarios, making traditional analytical tools insufficient. The fuzzy soft set theory has emerged as a powerful framework for modeling and reasoning with uncertain information, with ...
Adebisi, Sunday Adesina   +1 more
core   +1 more source

Controlled Growth of Boron Nitride in Various Phases

open access: yesAdvanced Materials Interfaces, EarlyView.
Phase‐selective boron nitride growth is presented as a unified materials‐design problem across hexagonal, rhombohedral, cubic, and amorphous phases. By linking synthesis routes to thermodynamic stability, kinetic accessibility, surface diffusion, interfacial templating, and energetic activation, this review clarifies how bonding and stacking are ...
Pan Wu   +6 more
wiley   +1 more source

Semi-regular relative difference sets with large forbidden subgroups

open access: yesJournal of Combinatorial Theory, Series A, 2008
Motivated by a connection between semi-regular relative difference sets and mutually unbiased bases, we study relative difference sets with parameters $(m,n,m,m/n)$ in groups of non-prime-power orders. Let $p$ be an odd prime. We prove that there does not exist a $(2p,p,2p,2)$ relative difference set in any group of order $2p^2$, and an abelian $(4p,p ...
Tao Feng 0001, Qing Xiang
openaire   +4 more sources

Tailoring Iron Nanostructures on MoS2: The Pivotal Role of Sulfur Vacancies in Growth Morphology and Charge Transfer

open access: yesAdvanced Materials Interfaces, EarlyView.
The deposition of Iron on pristine MoS2/Au(111) monolayers produces nanoparticles that donate charge to the support, generating Fe+2‐interfacial species. On the contrary, on defect‐engineered MoS2, sulfur vacancies trap sub‐nanometric Fe clusters and host two excess electrons that redistribute locally, suppressing Fe oxidation without formal Mo ...
Marco Nalesso   +10 more
wiley   +1 more source

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