Results 101 to 110 of about 5,591,095 (382)

Preliminary results of variable star search using KMTNet data

EPJ Web of Conferences, 2017
The KMTNet (Korea Microlensing Telescope Network) was completed on October 2nd in 2015. There are three 1.6 m telescopes in Chile (CTIO), Australia (SSO) and South Africa (SAAO). The field of view of the CCD camera is 2 degree × 2 degree.
Jeon Young-Beom
doaj   +1 more source

Insights into PI3K/AKT signaling in B cell development and chronic lymphocytic leukemia

FEBS Letters, EarlyView.
This Review explores how the phosphoinositide 3‐kinase and protein kinase B pathway shapes B cell development and drives chronic lymphocytic leukemia, a common blood cancer. It examines how signaling levels affect disease progression, addresses treatment challenges, and introduces novel experimental strategies to improve therapies and patient outcomes.
Maike Buchner
wiley   +1 more source

Discovery of a rapidly pulsating subdwarf B star candidate in omega Cen

, 2008
We report the discovery of the first variable extreme horizontal branch star in a globular cluster (omega Cen). The oscillation uncovered has a period of 114 s and an amplitude of 32 mmags.
A. Calamida, Bedin, Brown, Calamida, Castellani, Castellani, Castellani, Charpinet, Charpinet, Charpinet, D'Antona, D'Antona, D'Cruz, Del Principe, G. Bono, Greggio, Han, Han, Han, Heber, Kilkenny, Lee, Moni Bidin, Napiwotzki, Oreiro, Pietrinferni, Piotto, Reed, S. K. Randall, Stetson, Stetson, Stetson, Stetson, van Grootel   +33 more
core   +1 more source

Variability in Early Post-main-sequence Stars in Globular Cluster NGC 3201

The Astronomical Journal, 2023
In this paper we study stellar variability in the globular cluster NGC 3201 in the magnitude range V = 16–17, corresponding to the subgiant branch and blue stragglers region of the cluster.
D. Ulloa-Solís, C. C. Cortés, S. Villanova, Á. Llancaqueo Albornoz, J. A. Ahumada, C. Parisi   +5 more
doaj   +1 more source

Making tau amyloid models in vitro: a crucial and underestimated challenge

FEBS Letters, EarlyView.
This review highlights the challenges of producing in vitro amyloid assemblies of the tau protein. We review how accurately the existing protocols mimic tau deposits found in the brain of patients affected with tauopathies. We discuss the important properties that should be considered when forming amyloids and the benchmarks that should be used to ...
Julien Broc, Clara Piersson, Yann Fichou
wiley   +1 more source

Four New Delta Scuti Pulsators from a Variability Survey of 131 Stars

, 2002
In a photometric variability survey of 131 stars with B < 14 mag, we have found four new Delta Scuti stars. We were sensitive to oscillation amplitudes as low as a few mmag.
Alexei V. Filippenko, Eyer L., Groot P., Hog E., J. L. Sokoloski, Kholopov P. N., Lars Bildsten, Lopez de Coca P., Munari U., Petersen J. O., Pojmanski G., R. Chornock, Sokoloski J. L., Udalski A., Udalski A., Udalski A., Viskum M., Viskum M.   +17 more
core   +2 more sources

Variable rotational line broadening in the Be star Achernar [PDF]

, 2013
The main theoretical problem for the formation of a Keplerian disk around Be stars is how to supply angular momentum from the star to the disk, even more so since Be stars probably rotate somewhat sub-critically.
T. Rivinius, D. Baade, R. H. Townsend, A. Carciofi, S. Štefl   +4 more
semanticscholar   +1 more source

The cytoskeletal control of B cell receptor and integrin signaling in normal B cells and chronic lymphocytic leukemia

FEBS Letters, EarlyView.
In lymphoid organs, antigen recognition and B cell receptor signaling rely on integrins and the cytoskeleton. Integrins act as mechanoreceptors, couple B cell receptor activation to cytoskeletal remodeling, and support immune synapse formation as well as antigen extraction.
Abhishek Pethe, Tanja Nicole Hartmann
wiley   +1 more source

The molecular gas around the luminous blue variable star G24.73+0.69 [PDF]

, 2011
Aims. We study the molecular environment of the luminous blue variable star G24.73+0.69 to investigate the origin of the two infrared shells around this massive star and determine its effects on the surrounding interstellar medium. Methods.
A. Petriella, S. Paron, E. Giacani
semanticscholar   +1 more source

Interaction vesicles as emerging mediators of host‐pathogen molecular crosstalk and their implications for infection dynamics

FEBS Letters, EarlyView.
Interaction extracellular vesicles (iEVs) are hybrid vesicles formed through host‐pathogen communication. They facilitate immune evasion, transfer pathogens' molecules, increase host cell uptake, and enhance virulence. This Perspective article illustrates the multifunctional roles of iEVs and highlights their emerging relevance in infection dynamics ...
Bruna Sabatke, Izadora Volpato Rossi, Marcel I. Ramirez   +2 more
wiley   +1 more source