Results 91 to 100 of about 233,898 (339)

Astrometry Lost and Regained

Open Astronomy, 2011
Technological and scientific developments during the past century made a new branch of astronomy flourish, i.e. astrophysics, and resulted in our present deep understanding of the whole Universe.
Høg E.
doaj   +1 more source

Les principes de la restauration d’instruments scientifiques : le cas du cercle méridien Gautier de l’observatoire de Rio de Janeiro

In Situ, 2009
This article opens with some general remarks on the principles of restoring scientific instruments and on the presentation of the restoration policies of the Brazilian museum of astronomy (MAST).
Marcus Granato, Françoise Le Guet Tully   +1 more
doaj   +1 more source

Is NGC6752 hiding a double black hole binary in its core ? [PDF]

, 2002
NGC6752 hosts in its halo PSR J1911-5958A, a newly discovered binary millisecond pulsar which is the most distant pulsar ever known from the core of a globular cluster.
Colpi, Monica, Gualandris, Alessia, Possenti, Andrea   +2 more
core   +1 more source

Strong Proton‐Phonon Coupling Drives Fast Ion Transport in Perovskites

Advanced Science, EarlyView.
Experimental and computational phonon analysis of ABO3‐type proton conductor BaSnO3 shows that substitution on the B‐site with yttrium forms an imaginary phonon mode which is instrumental for the function as proton conductor. This overcompensates the adverse proton trapping effect of the yttrium.
Alexey Rulev, Nobumoto Nagasawa, Hongxin Wang, Vladimir Pomjakushin, Martin Kunz, Yoshitaka Yoda, Stephen P. Cramer, Qianli Chen, Artur Braun   +8 more
wiley   +1 more source

Mapping Charge Interactions in Intrinsically Disordered Proteins

Advanced Science, EarlyView.
This study presents analytical models to predict intrachain distances in intrinsically disordered proteins (IDPs), accounting for charge patterning, salt concentration, and electrostatic effects. Validated against single‐molecule FRET data, a minimal‐parameter polymer model is identified that captures key interactions and chain dimensions. These models
Michael Phillips, Andrea Holla, Magdalena Wojtas, Aritra Chowdhury, Andrea Sottini, Sebastian L. B. König, Natalie Mutter, Nick Lamb, Jonathan Huihui, Monika Lopko, Andrea Soranno, Daniel Nettels, Andrzej Ożyhar, Benjamin Schuler, Kingshuk Ghosh   +14 more
wiley   +1 more source

Velocitat dels coets i elements químics de les estrelles : física i química o astronomia a secundària? [PDF]

, 2009
The objective of this work is to show how teaching physics and chemistry through Astronomy and its history can again make it attractive to secondary school students.
Fernández Novell, Josep M., Zaragoza Domènech, Carme   +1 more
core   +1 more source

Commission 41: History of Astronomy (Histoire de l’Astronomie) (A joint IAU-IUHPS Commission) [PDF]

, 1996

openalex   +1 more source

Uncovering the Lipid Interface in Neurotransmission: Single Molecule Measurements of Neurotransmitters Interacting with Membranes Reveal Species Dependent Membrane Binding

Advanced Science, EarlyView.
Using single‐molecule whispering gallery mode sensors, neurotransmitter‐specific membrane binding signatures are measured that reveal intrinsically distinct interaction kinetics and orientations on a lipid membrane. Abstract Neurotransmitters (NTs) have traditionally been understood to act via aqueous‐phase receptor binding, but growing evidence ...
Thomas L. Derrien, Aneeth Kakkanattu Arunkumar, Rosalind Cross, Emilie Sunnucks, Frank Vollmer   +4 more
wiley   +1 more source

Imperfection in Semiconductors Leading to High Performance Devices

Advanced Science, EarlyView.
Crystalline perfection is typically pursued in semiconductors to enhance device performance. However, through modeling and experimental work, we show that defects can be strategically employed in a specific detection regime to increase sensitivity to extreme values. GaN diodes are demonstrated to effectively detect high‐energy proton beams at fluxes as
Jean‐Yves Duboz, Matilde Siviero, Lucas Lesourd, Eric Frayssinet, Sebastien Chenot, Petter Hofverberg, Sullivan Marafico, Marie Vidal, Maxime Hugues   +8 more
wiley   +1 more source

Museum of Astronomy and Related Sciences in Rio de Janeiro – between science and public

Tyragetia, 2014
Museum of Astronomy and Related Sciences in Rio de Janeiro (MAST) was opened in 1985 and is now one of the most popular institutions of this type in Brazil. It stores artifacts related to the Brazilian science and technology.
Lucia Marinescu-Tonu
doaj