Results 51 to 60 of about 1,340,272 (265)

The Relativistic Fe Emission Line in XTE J1650-500 with BeppoSAX: Evidence for Black Hole Spin and Light Bending Effects?

, 2003
We report spectral results from three BeppoSAX observations of the black hole candidate XTE J1650-500 during its 2001/2002 outburst. We find strong evidence for the presence of a broad and strongly relativistic Fe emission line.
A. C. Fabian, Arnaud, Boella, Boella, Castro-Tirado, Dovčiak, Fabian, Fabian, Frontera, G. Miniutti, Groot, Guainazzi, Homan, Homan, J. M. Miller, Magdziarz, Markwardt, Martocchia, McClintock, Miller, Miller, Miller, Miller, Miniutti, Miniutti, Mitsuda, Méndez, Nandra, Parmar, Remillard, Revnivtsev, Reynolds, Reynolds, Rossi, Shih, Skibo, Tanaka, Tanaka, Taylor, Turner, Turner, Van Der Klis, Wijnands, Wilms, Yaqoob, Young   +45 more
core   +1 more source

Tau acetylation at K331 has limited impact on tau pathology in vivo

FEBS Letters, EarlyView.
We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto, Yukio Matsuba, Mika Takahashi, Takaomi C. Saido   +3 more
wiley   +1 more source

Electronic Spectral Line Shape of a Diatomic Molecule [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 1988
The electronic absorption spectral line shape of a diatomic molecule with harmonic potential curves is calculated using the time correlation function formalism.
Reza Islampour, Ali Maghari
doaj  

Spectral Optical Monitoring of the Narrow Line Seyfert 1 galaxy Ark 564

, 2010
We present the results of a long-term (1999--2010) spectral optical monitoring campaign of the active galactic nucleus (AGN) Ark 564, which shows a strong Fe II line emission in the optical. This AGN is a narrow line Seyfert 1 (NLS1) galaxies, a group of
A. I. Shapovalova, A. Kovačević, A. Mercado, A. N. Burenkov, Alexander, Bischoff, Boller, Collier, Crenshaw, Crenshaw, Cruise, D. Dultzin, D. Ilić, de Vaucouleurs, E. Benítez, E. de la Fuente, Giannuzzo, J. Kovačević, J. León-Tavares, J. R. Valdes, J. Torrealba, Kollatschny, Kollatschny, Kollatschny, Kovačević, Kuehn, Kuraszkiewicz, L. Carrasco, L. Č. Popović, Leighly, Leighly, Marziani, Matsumoto, N. G. Bochkarev, O'Brien, Peterson, Peterson, Popović, Popović, Pounds, Rodríguez-Ardila, Shemmer, Sulentic, Sulentic, Turner, V. H. Chavushyan, W. Kollatschny, Zhang   +47 more
core   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +1 more source

Stark-Zeeman Broadening of Spectral Line Shapes in Magnetized Plasmas

Atoms, 2020
In this work, we studied the Lyman-alpha line in the presence of a magnetic field, such as the ones found at the edge of tokamaks. The emphasis is on the contribution of the motional Stark effect on line broadening, which may have comparable effects to ...
Kamel Ahmed Touati, Keltoum Chenini, Mohammed Tayeb Meftah   +2 more
doaj   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Anti-Interference Spectral Confocal Sensors Based on Line Spot

Sensors
Spectral confocal displacement sensors are non-contact optoelectronic sensors widely utilized for their high accuracy, speed, and ability to measure diverse surfaces.
Bo Wang, Jiafu Li, Mingzhe Luo, Fengshuang Liang, Jiacheng Hu   +4 more
doaj   +1 more source

Diversity and complexity in neural organoids

FEBS Letters, EarlyView.
Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley   +1 more source

Spectral monitoring of AGNs: Preliminary results for Ark 564 and Arp 102B

, 2011
We present preliminary results of the long term spectral monitoring of two active galactic nuclei with different broad line shapes: Ark 564 and Arp 102B.
Burenkov, A. N., Chavushyan, V. H., Ilic, D., Kovacevic, A., Kovacevic, J., Popovic, L. C., Shapovalova, A. I.   +6 more
core   +2 more sources