Results 51 to 60 of about 264,735 (274)

Obtaining transverse cooling with nonmagnetized electron beam

Physical Review Accelerators and Beams, 2020
The first electron cooling with rf-accelerated electron bunches was recently demonstrated at the low energy RHIC electron cooler (LEReC) at BNL. Successful cooling requires that the electrons in the cooling section have a small angular spread and are ...
S. Seletskiy, M. Blaskiewicz, A. Drees, A. Fedotov, W. Fischer, X. Gu, R. Hulsart, D. Kayran, J. Kewisch, C. Liu, M. Minty, V. Ptitsyn, V. Schoefer, A. Sukhanov, P. Thieberger, H. Zhao   +15 more
doaj   +1 more source

On the spectroastrometric separation of binary point-source fluxes

, 2004
Spectroastrometry is a technique which has the potential to resolve flux distributions on scales of milliarcseconds. In this study, we examine the application of spectroastrometry to binary point sources which are spatially unresolved due to the ...
Bagnuolo, Bailey, Bailey, Baines, Beckers, Beers, Courbin, Croom, D. Baines, Garcia, Hadrava, John M. Porter, Lucy, Magain, R. D. Oudmaijer, Simon, Takami, Takami   +17 more
core   +1 more source

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

FEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

Broadband direction of arrival estimation in presenceof angular spread

Electronics Letters, 2001
The problem of scattered broadband source localisation is addressed. It is shown that an accurate localisation requires both spatial and temporal processing of the array data owing to coherence loss across the array due to the scattering being frequency-selective.
Ghogho, M., Durrani, T.S.
openaire   +3 more sources

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source

On Second-Order Fading Statistics of Multi-Antenna 3-D Vehicular Communication Channels

IEEE Access
Incorporating systems that have multiple antennas with an inherent capability of reconfigurable beam patterns can enhance vehicle-to-vehicle (V2V) communications in 6G networks by taking advantage of favorable channel conditions.
Abrar Ahmed, Syed Junaid Nawaz, Babar Mansoor, Jaroslav Frnda, Muhammad Awais Javed, Sherali Zeadally   +5 more
doaj   +1 more source

GMRT 333 MHz observations of 6 nearby normal galaxies

, 2011
We report Giant Meterwave Radio Telescope (GMRT) continuum observations of six nearby normal galaxies at 333 MHz. The galaxies are observed with angular resolutions better than ~20" (corresponding to a linear scale of about 0.4 - 1 kpc).
Aritra Basu, Arp, Baars, Beck, Beck, Beck, Beck, Beck, Bell, Berkhuijsen, Berkhuijsen, Biermann, Bogdan, Braun, Broadbent, Brown, C. H. Ishwara-Chandra, Carilli, Caswell, Chyz̈y, Condon, Condon, Condon, Cornwell, de Bruyn, de Jong, de Jong, de Vaucouleurs, Dickinson, Dipanjan Mitra, Duric, Gioia, Gioia, Green, Heesen, Hummel, Hummel, Karachentsev, Karachentsev, Karachentsev, Kellermann, Kennicutt, Klein, Klein, Klein, Klein, Knapen, Knapik, Kothes, Krügel, Kuril’chik, Kuril’chik, Longair, Maddox, Mayya, Murgia, Murphy, Nagar, Niklas, Niklas, Ondrechen, Ondrechen, Ondrechen, Paladino, Rieke, Roy, Schommer, Seaquist, Segalovitz, Segalovitz, Smith, Steer, Sukumar, Swarup, Tabatabaei, Valls-Gabaud, van der Kruit, Wright, Yogesh Wadadekar   +78 more
core   +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

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

Nova-induced mass transfer variations [PDF]

, 2001
We investigate variations of the mass transfer rate in cataclysmic variables (CVs) that are induced by nova outbursts. The ejection of nova shells leads to a spread of transfer rates in systems with similar orbital period.
Howell, Steve, Kolb, Ulrich, Rappaport, Saul, Schenker, Klaus   +3 more
core   +2 more sources