Results 61 to 70 of about 429,563 (275)

A Long-Period Totally Eclipsing Binary Star at the Turnoff of the Open Cluster NGC 6819 Discovered with Kepler

, 2012
We present the discovery of the totally eclipsing long-period (P = 771.8 d) binary system WOCS 23009 in the old open cluster NGC 6819 that contains both an evolved star near central hydrogen exhaustion and a low-mass (0.45 Msun) star.
Brewer, Lauren N., Brogaard, Karsten, Bruntt, Hans, Frandsen, Soeren, Geller, Aaron M., Grundahl, Frank, Jeffries Jr, Mark W., Mathieu, Robert D., Meibom, Soren, Milliman, Katelyn E., Orosz, Jerome A., Platais, Imants, Sandquist, Eric L., Stello, Dennis   +13 more
core   +1 more source

Probing embedded star clusters in the HII complex NGC 6357 with VVV [PDF]

, 2014
NGC 6357 is an active star-forming region located in the Sagittarius arm displaying several star clusters, which makes it a very interesting target to investigate star formation and early cluster evolution.
Bica, E., Bonatto, C., Lima, E. F., Saito, R. K.   +3 more
core   +3 more sources

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Photosynthesis under far‐red light—evolutionary adaptations and bioengineering of light‐harvesting complexes

FEBS Letters, EarlyView.
Phototrophs evolved light‐harvesting systems adapted for efficient photon capture in habitats enriched in far‐red radiation. A subset of eukaryotic pigment‐binding proteins can absorb far‐red photons via low‐energy chlorophyll states known as red forms.
Antonello Amelii, Edoardo Andrea Cutolo, Daniele Montepietra, Claudia Battarra, Roberto Caferri, Stefano Capaldi, Zeno Guardini, Luca Dall'Osto, Roberto Bassi   +8 more
wiley   +1 more source

Star cluster formation and star formation: the role of environment and star-formation efficiencies [PDF]

, 2008
“The original publication is available at www.springerlink.com”. Copyright Springer. DOI: 10.1007/s10509-009-0088-5By analyzing global starburst properties in various kinds of starburst and post-starburst galaxies and relating them to the properties of ...
A. Pasquali, A. Schulz, B.C. Whitmore, B.C. Whitmore, B.C. Whitmore, B.G. Elmegreen, B.W. Miller, C. Maraston, C.D. Wilson, C.D. Wilson, C.J. Jog, C.J. Jog, D. Calzetti, E. Hummel, F. Schweizer, F. Schweizer, F. Schweizer, F. Schweizer, G. Parmentier, G. Parmentier, G. Trancho, G. Worthey, G.R. Meurer, H. Krueger, J. Gorgas, J. Schulz, J.H. Brown, K.A. Knierman, M. Haas, M.D. Mora, O.M. Kurth, P. Anders, P. Anders, P. Anders, P. Anders, P. Goudfrooij, P. Goudfrooij, P. Goudfrooij, P. Goudfrooij, P.M. Solomon, R. Grijs de, R. Grijs de, S. Bergh van der, S.C. Gallagher, S.E. Zepf, S.G. Boutloukos, S.S. Larsen, S.S. Larsen, T. Lilly, T. Lilly, U. Fritze-v. Alvensleben, U. Fritze-v. Alvensleben, U. Fritze-v. Alvensleben, U. Fritze-v. Alvensleben, Uta Fritze, Y. Gao, Y. Gao, Y. Li, Y. Shioya   +58 more
core   +2 more sources

Rad27/FEN1 prevents accumulation of Okazaki fragments and ribosomal DNA copy number changes

FEBS Letters, EarlyView.
The budding yeast Rad27 is a structure‐specific endonuclease. Here, the authors reveal that Rad27 is crucial for maintaining the stability of the ribosomal RNA gene (rDNA) region. Rad27 deficiency leads to the accumulation of Okazaki fragments and changes in rDNA copy number.
Tsugumi Yamaji, Yuko Katayama, Nanase Arata, Mariko Sasaki   +3 more
wiley   +1 more source

Comparing the relation between star formation and galaxy mass in different environments [PDF]

, 2009
Analyzing 24 mu m MIPS/Spitzer data and the [O II]3727 line of a sample of galaxies at 0.4 < z < 0.8 from the ESO Distant Cluster Survey (EDisCS), we investigate the ongoing star formation rate (SFR) and the specific star formation rate (SSFR) as a ...
Bai, Bai, Bai, Balogh, Bell, Cassata, Daddi, Dale, Desai, Feulner, Finn, Kewley, Noeske, Noeske, Pannella, Pelló, Poggianti, Poggianti, Pérez-González, Rines, Sudžius, Willmer, Yan, Zheng   +23 more
core   +2 more sources

Targeting EZH2 reverses thyroid cell dedifferentiation and enhances iodide uptake in anaplastic thyroid cancer

FEBS Letters, EarlyView.
Anaplastic thyroid cancer (ATC) lacks iodide uptake ability due to MAPK activation increasing the expression of the histone methyltransferase EZH2, which represses thyroid differentiation genes (TDGs) such as the sodium iodide symporter (NIS). Dual inhibition of MAPK (U0126) and EZH2 (EPZ6438/Tazemetostat) reverses this mechanism, thus restoring TDG ...
Diego Claro de Mello, Marcella Maringolo Cristovão, Guilherme Henrique, Vinicius Gonçalves Rodrigues, Caroline Serrano‐Nascimento, Edna Teruko Kimura, Cesar Seigi Fuziwara   +6 more
wiley   +1 more source

Double Star/Cluster observation of neutral sheet oscillations on 5 August 2004 [PDF]

Annales Geophysicae, 2005
Previous Cluster observations have shown that the flapping motions of the Earth's magnetotail are of internal origin and that kink-like waves are emitted from the central part of the tail and propagate toward the tail flanks. The newly launched Double
T. L. Zhang, T. L. Zhang, R. Nakamura, M. Volwerk, M. Volwerk, A. Runov, W. Baumjohann, H. U. Eichelberger, C. Carr, A. Balogh, V. Sergeev, J. K. Shi, K.-H. Fornacon   +12 more
doaj   +1 more source

Molecular bases of circadian magnesium rhythms across eukaryotes

FEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source