Results 51 to 60 of about 1,476 (186)
ChemistryOpen, Volume 14, Issue 12, December 2025.N‐terminal betaine conjugation modifies β‐peptide helices, influencing folding and self‐organization. For [1S, 2S]‐ACPC, folding to an H12 helix was unaffected, while [1R, 2R]‐ACHC formed an H14 helix instead of H10. Alternating heterochiral oligomers made of enantiomeric pairs of trans‐ACPC showed enhanced solubility and E‐strand formation.
Nikolett Varró +10 more
wiley +1 more source
Perspectives of Earth and Space Scientists, Volume 6, Issue 1, December 2025.Abstract The Solar, Anomalous, and Magnetospheric Explorer (SAMPEX) mission launched in July 1992 was the first NASA “Small Explorer” project. It had the goal to show how space missions could be developed much more rapidly than had become the situation in the 1980s and 1990s.
D. N. Baker, G. M. Mason
wiley +1 more source
Halo ejection in distant radio galaxies: jet feedback in massive galaxy formation
Astrophysics and Space Science, 2007 We present results from a Keck optical and near IR spectroscopic study of the giant emission line halos of the z > 3 High Redshift Radio Galaxies (HiZRGs) 4C 41.17, 4C 60.07 and B2 0902+34. The outer regions of these halos show quiet kinematics with typical velocity dispersions of a few hundred km s^(−1) and velocity shears consistent with rotation ...
Dopita, Michael A. +13 more
openaire +3 more sources
Radiation Transport Through the Martian Atmosphere as a Function of the Zenith Angle
Journal of Geophysical Research: Planets, Volume 130, Issue 12, December 2025.Abstract The topographic influence of the radiation environment on the Martian surface radiation is crucial for future human exploration. Topographic maps help assess radiation flux variations, aiding in hazard evaluation. Creating a global radiation map requires accounting for seasonally varying atmospheric density, heliospheric modulation, and ...
Salman Khaksari +12 more
wiley +1 more source
A Comparative Study of VTEC Estimates Derived From S/X VLBI and VGOS Observations
Space Weather, Volume 23, Issue 12, December 2025.Abstract The ionosphere, which strongly varies in time and space, is one of the largest error sources for microwave measurements, if not accounted for accurately. Especially for single‐frequency observations, precise ionospheric models are needed to correct for the ionospheric delays. This study explores the utility of Very Long Baseline Interferometry
Arno Rüegg +2 more
wiley +1 more source
A translated utopia: Embodied communication, media ideologies, and Star Trek's Universal Translator
Journal of Linguistic Anthropology, Volume 35, Issue 3, December 2025.Abstract This paper uses Star Trek's “Universal Translator” (UT) as a point of departure for considering the imagined future of mediated linguistic interactions and of contact across difference. Although such a technology does not exist, taking its potentialities seriously as folkloric devices allows for an exploration of ideologies relating to ...
Sarah Shulist
wiley +1 more source
Radio jets and galaxies as cosmic string probes [PDF]
Frontiers of Physics, 2011 The lensing effect of a cosmic string is studied, and some new methods are proposed to detect the cosmic string. The technique for using jets as extended gravitational lensing probes was firstly explored by Kronberg. We use the "alignment-breaking parameter" $ _G $ as a sensitive indicator of gravitational distortion by a wiggly cosmic string.
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Bent jets in high-redshift galaxies
The Astrophysical Journal, 1984 On montre que la courbure des jets radio des galaxies a forts decalages spectraux est une consequence naturelle de la plus grande densite du gaz dans les galaxies elliptiques dans le passe et de la stabilite ou de l'instabilite des orbites particulieres dans un potentiel triaxial.
openaire +1 more source
Face‐on Dust Disks in Galaxies with Optical Jets
The Astrophysical Journal, 2000 The presence of optical synchrotron jets in radio galaxies is relatively rare. Here, we show that of the nearest five FR-I 3CR radio galaxies showing optical jets, {\it four} show evidence for almost circular, presumably face-on, dust disks. This is strong support for the two-fold idea that (\romannumeral1) jets emerge close to perpendicular to inner ...
Sparks, W +4 more
openaire +3 more sources
Jetted subgalactic-size radio sources in merging galaxies
Astronomy & AstrophysicsContext. The long-standing question concerning jetted subgalactic-size (JSS) radio sources is whether they will evolve into large radio galaxies, die before escaping the host galaxy, or remain indefinitely confined to their compact size. Aims. Our main goal is to propose a scenario that explains the relative number of JSS radio sources and their ...
C. Stanghellini +8 more
openaire +2 more sources