Results 81 to 90 of about 18,681 (274)

Faraday caustics: Singularities in the Faraday spectrum and their utility as probes of magnetic field properties

, 2011
We describe singularities in the distribution of polarized intensity as a function of Faraday depth (i.e. the Faraday spectrum) caused by line-of-sight (LOS) magnetic field reversals. We call these features Faraday caustics because of their similarity to
Brentjens, Brentjens, Burn, de Bruyn, Eilek, Eilek, Enßlin, Frick, Frick, Gaensler, Górski, H. Junklewitz, Haverkorn, Heald, Jaffe, Jansson, Junklewitz, Kahniashvili, M. R. Bell, Mizeva, Oppermann, Pizzo, Spangler, Spangler, Subramanian, Sun, T. A. Enßlin, Uyaniker, Waelkens, Waelkens, Wolleben, Wolleben   +31 more
core   +1 more source

Algebraic Properties of the Real Quintic Equation for a Binary Gravitational Lens [PDF]

, 2002
It has been recently shown that the lens equation for a binary gravitational lens, which is apparently a coupled system, can be reduced to a real fifth-order (quintic) algebraic equation.
H. Asada, M. Kasai, Marcy, T. Kasai
core   +3 more sources

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Caustics in Dark Matter Haloes

, 2005
Caustics are formally singular structures, with infinite density, that form in collisionless media. The non-negligible velocity dispersion of dark matter particles renders their density finite.
Colombi, Stephane, Fort, Bernard, Gavazzi, Raphael, Mohayaee, Roya, Shandarin, Sergei, Touma, Jihad   +5 more
core   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

FEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva, Ariann E. Mendoza‐Martínez, P. Abril Medina‐Flores, Carlos Campero‐Basaldua, Alexander DeLuna, Soledad Funes   +5 more
wiley   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source

Origami constraints on the initial-conditions arrangement of dark-matter caustics and streams

, 2012
In a cold-dark-matter universe, cosmological structure formation proceeds in rough analogy to origami folding. Dark matter occupies a three-dimensional 'sheet' of free- fall observers, non-intersecting in six-dimensional velocity-position phase space. At
Abel, Aragón-Calvo, Aragón-Calvo, Arnold, Arnold, Asratian, Bond, Chartrand, Diaferio, Falck, Gjerde, Guthrie, Hahn, Hogan, Hull, Hull, Icke, Kofman, Lang, Lavaux, Mark C. Neyrinck, Martin, Mohayaee, Natarajan, Neyrinck, Platen, Pogosyan, Row, Shandarin, Sousbie, Sousbie, Springel, Vogelsberger, White, Zel'dovich   +34 more
core   +1 more source

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

FEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva, Puspa Kunwar, Md Ibnul Rifat Rahman, Joanna Koryo Kwao, Nathan Lehman, Zihan Zhang, Trenton Paul, Claire Cheng, Nicholas Truex, Hui‐Ting Lee, Jun Zhang   +10 more
wiley   +1 more source

Quagmire of esophageal replacement in infants and children

International Journal of Advanced Medical and Health Research, 2020
A normally functioning esophagus is a specialized functioning organ, and it functions in concert with other derivatives of foregut origin. Unlike adults, esophageal replacement (OR) in infants and children is uniformly done for benign conditions.
Rajendra Govind Saoji, Avanti Rajendra Saoji   +1 more
doaj   +1 more source

Properties of Microlensing Central Perturbations by Planets in Binary Stellar Systems under the Strong Finite-Source Effect

, 2010
We investigate high-magnification events caused by planets in wide binary stellar systems under the strong finite-source effect, where the planet orbits one of the companions.
Albrow, Bennett, Byeong-Gon Park, Chung, Dong, Dong, Griest, Han, Han, Han, Janczak, Lee, Sun-Ju Chung, Udalski   +13 more
core   +1 more source