Results 91 to 100 of about 582,427 (291)

Thermodynamics of Concomitant Charge‐Transfer, Antiferromagnetic, and Isostructural Phase Transitions in Barocaloric ACu3Fe4O12 Quadruple Perovskites

open access: yesAdvanced Science, EarlyView.
A copper‐iron charge transfer instability drives concomitant electronic, magnetic, and isostructural phase transitions in ACu3Fe4O12${\rm ACu}_3{\rm Fe}_4{\rm O}_{12}$, with an inverse barocaloric effect. A minimal Landau theory ties these thermodynamic signatures together, revealing a pressure‐independent transition entropy with comparable charge and ...
Jefferson Delgado‐Quesada   +1 more
wiley   +1 more source

Equivalent definitions of positive definiteness [PDF]

open access: yesPacific Journal of Mathematics, 1984
Maserick, P. H., Szafraniec, F. H.
openaire   +2 more sources

Green and Scalable Synthesis of Efficient and Stable CsPbBr3 Perovskite Quantum Dots Enables Low‐Threshold Amplified Spontaneous Emission

open access: yesAdvanced Science, EarlyView.
Green and scalable synthesis of CsPbBr3 perovskite quantum dots using bio‐sourced lecithin and hexane enables single‐batch production over 10 grams. Suppressed Auger recombination and electron‐phonon coupling yields 95% PLQY, enhanced stability, and low ASE thresholds of 230.4 (ns) and 50.1 (fs) µJ cm−2 in neat films. ABSTRACT Halide perovskite quantum
Yongfeng Liu   +10 more
wiley   +1 more source

On teaching post-graduate students correct use of articles in English academic discourse

open access: yesStudia Humanitatis
The article is concerned with teaching young researchers correct use of articles in academic discourse (including ‘a’/‘an’, ‘the’and zero article).
Kazey Elena Olegovna   +1 more
doaj  

Measuring Sphericity in Positive Semi-Definite Matrices

open access: yesAxioms
The measure of sphericity for positive semi-definite matrices plays a crucial role in understanding their geometric properties, especially in high-dimensional settings.
Dário Ferreira, Sandra S. Ferreira
doaj   +1 more source

Definiteness in Argobba NPs

open access: yesNordic Journal of African Studies, 2014
This paper describes and analyzes the morphosyntactic manifestation of definite nominals in Argobba, a Semitic language spoken in Ethiopia, in HPSG framework.
Getahun Amare Agegnehu
doaj   +1 more source

Data‐Driven Discovery of Unconventional Antiferromagnets

open access: yesAdvanced Science, EarlyView.
A high‐throughput workflow that combines the physics‐informed pre‐screening, high‐throughput exchange calculations, Luttinger‐Tisza analysis and symmetry classification is established for accurate identification of unconventional antiferromagnets from the broad structural database.
Qirui Cui   +3 more
wiley   +1 more source

On the definition of a confounder

open access: yesThe Annals of Statistics, 2013
Published in at http://dx.doi.org/10.1214/12-AOS1058 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
VanderWeele, Tyler J., Shpitser, Ilya
openaire   +9 more sources

Unsuccessful Coupling of Weakly Coordinating Anion–Based Mg Salts and Alkoxyalkylamine Solvents for Rechargeable Mg Battery Application: Trace Water‐Driven Interfacial Failure

open access: yesAdvanced Science, EarlyView.
Combining recently established two ground‐breaking concepts, the adoption of WCAs and the use of alkoxyalkylamine‐based solvents in electrolyte formulations for rechargeable magnesium metal batteries, has led to unexpectedly unsuccessful electrochemical Mg plating/stripping performance. Comprehensive experimental and computational analyses revealed the
Toshihiko Mandai   +4 more
wiley   +1 more source

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