Results 51 to 60 of about 773,050 (248)

Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities

open access: yesAdvanced Materials, EarlyView.
This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen   +7 more
wiley   +1 more source

Notes on elation generalized quadrangles

open access: yesEuropean Journal of Combinatorics, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Stanley E. Payne, Koen Thas
openaire   +2 more sources

Escaping the Scaling Relationships in Oxygen Reduction Catalysis: Implications for PEM Fuel Cells

open access: yesAdvanced Materials, EarlyView.
Escaping the scaling relationships of the oxygen reduction reaction is vital for hydrogen fuel cells. This outlook examines how interfacial heterogeneity, spanning the subsurface lattice, chemisorption layer, and near‐interface solvation volume, mechanistically decouples intermediate binding energetics.
Muhammad Bilal Wazir   +2 more
wiley   +1 more source

Habitat suitability modeling reveals conservation gaps for endemic canga flora in Brazil’s Iron Quadrangle

open access: yesEnvironmental Challenges
Ferruginous ecosystems in Brazil host highly endemic plant assemblages threatened by mining expansion and habitat loss, yet their spatial distribution and conservation status remain poorly understood.
Bruno Araujo Furtado de Mendonça   +8 more
doaj   +1 more source

Generalized Quadrangles and Flocks of Cones

open access: yesEuropean Journal of Combinatorics, 1987
A flock of the quadratic cone K of PG(3,q) is a partition of K but its vertex into disjoint conics. It is called linear if the planes of the q conics of such a flock all contain a common line. A flock is linear if and only if there corresponds a Desarguesian translation plane to it. W. M.
openaire   +3 more sources

Geology of the Stonewall Quadrangle, Gillespie and Kendall Counties, Texas

open access: yes, 1966
To obtain a print version of this publication visit: https://store.beg.utexas.edu/ and search for: GQ0031. Accompanied by 1 fold-out map : Geologic Map of the Stonewall Quadrangle, Gillespie and Kendall Counties, TexasStonewall quadrangle includes part ...
Barnes, Virgil E. (Virgil Everett), 1903-1998
core   +1 more source

Above Room Temperature Ferroelectricity in Epitaxially Strained KTaO3

open access: yesAdvanced Materials, EarlyView.
Through precise epitaxial engineering, the cubic and paraelectric KTaO3${\rm KTaO}_3$ is transformed into a robust ferroelectric. By leveraging lattice‐mismatched substrates to apply controlled epitaxial strain, a stable ferroelectric ground‐state is achieved with a transition temperature as high as 475 K, establishing KTaO3${\rm KTaO}_3$ as a highly ...
Tobias Schwaigert   +11 more
wiley   +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

The Veldkamp Space of Two-Qubits

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2007
Given a remarkable representation of the generalized Pauli operators of two-qubits in terms of the points of the generalized quadrangle of order two, W(2), it is shown that specific subsets of these operators can also be associated with the points and ...
Metod Saniga   +3 more
doaj  

The Ghinelli–Löwe construction of generalized quadrangles

open access: yesEuropean Journal of Combinatorics, 2003
The authors dig up an old construction of some finite generalized quadrangles due to Ghinelli and Löwe, which was never published. No new examples arise, but the authors identify earlier examples of this method (and these examples were not identified before) as flock quadrangles of Cantor-Knuth type.
GHINELLI, Dina, PAYNE S. E.
openaire   +1 more source

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