Results 191 to 200 of about 2,779,137 (346)

Possible Peierls Distortion Through Re2 Dimer Formation in the LaNiO2‐Type Nitrides LnReN2 (Ln = Pr, Nd)

open access: yesAngewandte Chemie International Edition, EarlyView.
This study presents the high‐pressure synthesis of two new anion‐vacancy‐ordered perovskite‐related nitrides, PrReN2 and NdReN2, featuring distorted LaNiO2‐type structures. X‐ray and neutron diffraction reveal a structural distortion driven by dimerization of Re‐chains, while electronic structure calculations reveal the simultaneous presence of ...
Dominik Werhahn   +6 more
wiley   +1 more source

Theoretical Model of Distributed Parameters for Eccentric Coaxial Line and Its Application in Oil Wells

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Aiming at the current demand for using wellbore coaxial lines with tubing and casing in oil wells, implementing microwave chemical‐assisted crude oil upgrading underground, and promoting “carbon‐zero” mining projects in oil field development, we carried out theoretical analysis, simulations, and applied research on the distributed parameters ...
Tao Liu, Lili Wang
wiley   +1 more source

The Fundamental Theorem of Calculus with Gossamer numbers [PDF]

open access: green, 2015
Chelton D. Evans, William K. Pattinson
openalex   +1 more source

Quantum Carnot Bound from Petz Recovery Maps

open access: yesAdvanced Physics Research, EarlyView.
A quantum bound (ηP$\eta_P$, the Petz Limit) is derived for the efficiency (η$\eta$) of a heat engine utilizing two‐level quantum systems (qubits) as the working substance. This limit, based on Petz recovery maps, is stricter than the classical Carnot limit (ηC$\eta_C$) for irreversible cycles.
Douglas Mundarain   +2 more
wiley   +1 more source

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