Results 121 to 130 of about 1,622,433 (301)

Theoretical models of free-free microwave emission from solar magnetic loops [PDF]

open access: yes
The free-free microwave emission is calculated from a series of model magnetic loops. The loops are surrounded by a cooler external plasma, as required by recent simultaneous X ray and microwave observations, and a narrow transition zone separating the ...
Brosius, Jeffrey W., Holman, Gordon D.
core   +1 more source

First principles lattice dynamics of NaCoO$_2$

open access: yes, 2004
We report first principles linear response calculations on NaCoO$_2$. Phonon frequencies and eigenvectors are obtained throughout the Brillouin zone for two geometries with different Na site occupancies.
J. G. Hou   +4 more
core   +1 more source

β‐Catenin/c‐Myc Axis Modulates Autophagy Response to Different Ammonia Concentrations

open access: yesAdvanced Biology, Volume 9, Issue 3, March 2025.
Ammonia, detoxified by the liver into urea and glutamine, impacts autophagy differently at varying levels. Low ammonia activates autophagy via c‐Myc and β‐catenin, while high levels suppress it. Using Huh7 cells and Spf‐ash mice, c‐Myc's role in cytoprotective autophagy is revealed, offering insights into hyperammonemia and potential therapeutic ...
S. Sergio   +11 more
wiley   +1 more source

Correction: Synaptic neurexin-1 assembles into dynamically regulated active zone nanoclusters. [PDF]

open access: yesJ Cell Biol, 2023
Trotter JH   +6 more
europepmc   +1 more source

Design for the contact zone. Knowledge management software and the structures of indigenous knowledges [PDF]

open access: yes, 2010
This article examines the design of digital indigenous knowledge archives. In a discussion of the distinction between indigenous knowledge and western science, a decentred perspective is developed, in which the relationship between different local ...
van der Velden, Maja
core  

First principles investigation of ferroelectricity in epitaxially strained Pb$_2$TiO$_4$

open access: yes, 2005
The structure and polarization of the as-yet hypothetical Ruddlesden-Popper compound Pb$_2$TiO$_4$ are investigated within density-functional theory.
Craig J. Fennie   +8 more
core   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

Morphofunctional changes at the active zone during synaptic vesicle exocytosis. [PDF]

open access: yesEMBO Rep, 2023
Radecke J   +8 more
europepmc   +1 more source

Theory of anomalous magnon softening in ferromagnetic manganites

open access: yes, 1999
In metallic manganites with low Curie temperatures, a peculiar softening of the magnon spectrum close to the magnetic zone boundary has experimentally been observed.
A. Auerbach   +21 more
core   +1 more source

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