Results 11 to 20 of about 592,230 (105)

Ferromagnetic half levitation of LK-99-like synthetic samples [PDF]

open access: yesScience China Physics Mechanics and Astronomy, 2023
We successfully synthesized polycrystalline LK-99-like ceramic samples with a solid-state-sintering method. Powder X-ray diffraction shows that the main contents are Pb_10− x Cu_ x (PO_4)_6O and Cu_2S, consistent with recent reports (arXiv: 2307.12037 ...
Kaizhe Guo, Yuan Li, S. Jia
semanticscholar   +1 more source

Absence of Superconductivity in LK-99 at Ambient Conditions [PDF]

open access: yesACS Omega, 2023
The report of the synthesis of modified lead apatite (LK-99), with evidence of superconductivity at more than boiling water temperature, has steered the scientific community.
Kapil Kumar   +3 more
semanticscholar   +1 more source

Synthesis of possible room temperature superconductor LK-99: Pb9Cu(PO4)6O [PDF]

open access: yesSuperconductors Science and Technology, 2023
The quest for room temperature superconductors has been teasing scientists and physicists, since its inception in 1911 itself. Several assertions have already been made about room temperature superconductivity, but have never been verified or reproduced ...
Kapil Kumar, N. K. Karn, V. Awana
semanticscholar   +1 more source

Superionic Phase Transition of Copper(I) Sulfide and Its Implication for Purported Superconductivity of LK-99 [PDF]

open access: yesJournal of Physical Chemistry C, 2023
Lee, Kim, and coworkers have recently claimed room-temperature and ambient-pressure superconductivity in a copper-doped lead apatite material named LK-99.
P. Jain
semanticscholar   +1 more source

Two-qubit silicon quantum processor with operation fidelity exceeding 99% [PDF]

open access: yesScience Advances, 2021
Silicon spin qubits satisfy the necessary criteria for quantum information processing. However, a demonstration of high-fidelity state preparation and readout combined with high-fidelity single- and two-qubit gates, all of which must be present for ...
A. Mills   +6 more
semanticscholar   +1 more source

Electronic structure and vibrational stability of copper-substituted lead apatite LK-99 [PDF]

open access: yesPhysical review B, 2023
Two recent preprints in the physics archive (arXiv) have called attention as they claim experimental evidence that a Cu-substituted apatite material (dubbed LK-99) exhibits superconductivity at room temperature and pressure. If this proves to be true, LK-
J. Cabezas-Escares   +5 more
semanticscholar   +1 more source

First-order transition in LK-99 containing Cu2S [PDF]

open access: yesMatter, 2023
Lee et al.
Shiling Zhu   +3 more
semanticscholar   +1 more source

Global incidence in hospital-associated infections resistant to antibiotics: An analysis of point prevalence surveys from 99 countries

open access: yesPLoS Medicine, 2023
Background Hospital-associated infections (HAIs) are an important cause of morbidity and mortality around the world. Many HAIs are caused by drug-resistant bacterial pathogens, but there are major gaps in our understanding of the number of hospital ...
Ruchita Balasubramanian   +4 more
semanticscholar   +1 more source

Epidemiological and clinical characteristics of 99 cases of 2019 novel coronavirus pneumonia in Wuhan, China: a descriptive study

open access: yesThe Lancet, 2020
Summary Background In December, 2019, a pneumonia associated with the 2019 novel coronavirus (2019-nCoV) emerged in Wuhan, China.
Nanshan Chen   +13 more
semanticscholar   +1 more source

Distinguishing academic science writing from humans or ChatGPT with over 99% accuracy using off-the-shelf machine learning tools

open access: yesCell Reports Physical Science, 2023
SUMMARY ChatGPT has enabled access to artificial intelligence (AI)-generated writing for the masses, initiating a culture shift in the way people work, learn, and write.
H. Desaire   +4 more
semanticscholar   +1 more source

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