Results 101 to 110 of about 114,576 (290)

Probing Stellar Kinematics with the Time-Asymmetric Hanbury Brown and Twiss Effect

The Open Journal of Astrophysics
Intensity interferometry (II) offers a powerful means to observe stellar objects with a high resolution. In this work, we demonstrate that II can also probe internal stellar kinematics by revealing a time-asymmetric Hanbury Brown and Twiss (HBT) effect ...
Lucijana Stanic, Ivan Cardea, Edoardo Charbon, Domenico Della Volpe, Daniel Florin, Andrea Guerrieri, Gilles Koziol, Etienne Lyard, Nicolas Produit, Aramis Raiola, Prasenjit Saha, Vitalii Sliusar, Achim Vollhardt, Roland Walter   +13 more
doaj   +1 more source

pH‐mediated activation of the lysosomal arginine sensor SLC38A9

FEBS Letters, EarlyView.
Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
wiley   +1 more source

Relativistic stellar jets: dynamics and non-thermal radiation

EPJ Web of Conferences, 2013
Relativistic stellar jets, produced in binary systems called microquasars, propagate through media with different spatial scales releasing their energy in the form of work and radiation from radio to gamma rays.
Bosch-Ramon Valentí
doaj   +1 more source

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

FEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure, Misaki K. Nishio, Satoru Okuda, Kohji Hotta   +3 more
wiley   +1 more source

The human gut microbiome across the life course

FEBS Letters, EarlyView.
Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero, Basak Bahcivanci, Antonietta Hayhoe, Animesh Acharjee, Ezgi Özkurt   +4 more
wiley   +1 more source

The Collision and Merger Products of Stars Do Not Look Alike: A Magnetohydrodynamics Comparison

The Astrophysical Journal
A significant fraction of stars experience close interactions, including collisions resulting from gravitational encounters and mergers within close binary systems.
Pavan Vynatheya, Taeho Ryu, Chen Wang, Alison Sills, Rüdiger Pakmor   +4 more
doaj   +1 more source

Dynamical difference between the cD galaxy and the stellar diffuse component in simulated galaxy clusters

, 2010
Member galaxies within galaxy clusters nowadays can be routinely identified in cosmological, hydrodynamical simulations using methods based on identifying self bound, locally over dense substructures.
Arnaboldi, Arnaboldi, Arnaboldi, Aubert, Bertschinger, Biviano, Borgani, Byrd, Castro-Rodriguez, Castro-Rodríguez, Davis, Diemand, Doherty, Dolag, Dolag, Durrell, Eisenstein, Feldmeier, Feldmeier, Feldmeier, Frenk, G. Murante, Gal-Yam, Gelb, Gerhard, Gerhard, Gill, Gnedin, Gonzalez, Gonzalez, Hoffman, K. Dolag, Kim, Klypin, Knollmann, Kolatt, Krick, Krick, Lacey, Maciejewski, Mathis, Merritt, Mihos, Monaco, Moore, Murante, Murante, Napolitano, Neyrinck, Rudick, S. Borgani, Salpeter, Saro, Sommer-Larsen, Springel, Springel, Springel, Springel, Stanghellini, Tornatore, Tornatore, van Kampen, Weinberg, Willman, Zibetti   +64 more
core   +1 more source

Septin 9 PB domains coordinate centrosome positioning and microtubule acetylation to control epithelial polarity

FEBS Letters, EarlyView.
Septin 9 polybasic domains couple phosphoinositide‐rich membrane binding to centrosome positioning, Golgi organization, and microtubule acetylation to control epithelial polarity. Their loss disrupts this axis, causing centrosome mispositioning, Golgi fragmentation, reduced microtubule acetylation, and polarity inversion via upregulation of the ...
Ting ting Cai, Mohyeddine Omrane, Nassima Benzoubir, Didier Samuel, Ama Gassama‐Diagne   +4 more
wiley   +1 more source

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

FEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto, Masatomo So, Ayako Furukawa, Kenji Sugase   +3 more
wiley   +1 more source

Editorial: Galactic Dynamics in the Solar Neighborhood

Frontiers in Astronomy and Space Sciences, 2022
Jacques R. D. Lépine
doaj   +1 more source