Results 141 to 150 of about 441,564 (317)

Exploring the Components of Cosmogenic UHECR, Neutrino, and Diffuse Gamma Ray from High-Energy Astrophysical Objects

Galaxies
The development of multimessenger astrophysics allows us to probe various background particles from the distant early universe. Up to now, much effort has been made researching the emission and radiation of diverse steady or transient astrophysical ...
Fangsheng Min, Hong Lu, Yiqing Guo
doaj   +1 more source

Kinetic characterization of amino acid activation by aminoacyl‐tRNA synthetases using radiolabelled γ‐[32P]ATP

FEBS Open Bio, Volume 15, Issue 4, Page 580-586, April 2025.
Activation of amino acids by aminoacyl‐tRNA synthetases can be followed by a modified ATP/PPi exchange assay using radiolabelled γ‐[32P]ATP. The reaction is quenched at certain time points, followed by separation of the product ([32P]PPi) from the substrate (γ‐[32P]ATP) by thin‐layer chromatography (TLC).
Igor Živković, Morana Dulic, Petra Kozulic, Marko Mocibob, Ita Gruic‐Sovulj   +4 more
wiley   +1 more source

Analysis of Polarized Dust Emission Using Data from the First Flight of SPIDER

The Astrophysical Journal
Using data from the first flight of Spider and from the Planck High Frequency Instrument, we probe the properties of polarized emission from interstellar dust in the Spider observing region.
P. A. R. Ade, M. Amiri, S. J. Benton, A. S. Bergman, R. Bihary, J. J. Bock, J. R. Bond, J. A. Bonetti, S. A. Bryan, H. C. Chiang, C. R. Contaldi, O. Doré, A. J. Duivenvoorden, H. K. Eriksen, J. P. Filippini, A. A. Fraisse, K. Freese, M. Galloway, A. E. Gambrel, N. N. Gandilo, K. Ganga, S. Gourapura, R. Gualtieri, J. E. Gudmundsson, M. Halpern, J. Hartley, M. Hasselfield, G. Hilton, W. Holmes, V. V. Hristov, Z. Huang, K. D. Irwin, W. C. Jones, A. Karakci, C. L. Kuo, Z. D. Kermish, J. S.-Y. Leung, S. Li, D. S. Y. Mak, P. V. Mason, K. Megerian, L. Moncelsi, T. A. Morford, J. M. Nagy, C. B. Netterfield, M. Nolta, R. O’Brient, B. Osherson, I. L. Padilla, B. Racine, A. S. Rahlin, C. Reintsema, J. E. Ruhl, M. C. Runyan, T. M. Ruud, J. A. Shariff, E. C. Shaw, C. Shiu, J. D. Soler, X. Song, A. Trangsrud, C. Tucker, R. S. Tucker, A. D. Turner, J. F. van der List, A. C. Weber, I. K. Wehus, D. V. Wiebe, E. Y. Young, Spider Collaboration   +69 more
doaj   +1 more source

Limits to cosmic background radiation fluctuations at 8.44 GHz between angular scales 10″ and 200″

, 1993
We have used the VLA at 8.44 GHz to measure fluctuations in the cosmic background radiation (CBR) from two deep images, each 7'×7' in size. No fluctuations between the angular scales 10″ and 200″ were detected. The most accurate limit (95% confidence) is
E. Fomalont, R. B. Partridge, J. Lowenthal, R. Windhorst   +3 more
semanticscholar   +1 more source

A systematic review of electron FLASH dosimetry and beam control mechanisms utilized with modified non‐clinical LINACs

Journal of Applied Clinical Medical Physics, Volume 26, Issue 4, April 2025.
Abstract Background FLASH has been shown to spare normal tissue toxicity while maintaining tumor control. However, existing irradiation platforms and dosimetry are not compatible. Consequently, an abundance of FLASH delivery devices and new dosimetry across all modalities has been created.
Justin DeFrancisco, Siyong Kim
wiley   +1 more source

Unstable Neutrino Reheating of the Universe and Distortion of Cosmic Background Radiation Spectrum

, 1989
It is shown that the unstable neutrino reheating describes correctly the distortion of the cosmic background radiation spectrum in a short-wavelength side of the peak, if reheating occurs between z = 100,000 and 10,000 by the neutrino with mass greater ...
M. Fukugita, M. Kawasaki, T. Yanagida
semanticscholar   +1 more source

Nanoscale Biodegradable Printing for Designed Tuneability of Vaccine Delivery Kinetics

Advanced Materials, Volume 37, Issue 15, April 16, 2025.
Spatiotemporal Controlled Release Inks of Biocompatible polyEsters (SCRIBE) is a novel 2PP resin family with sub‐micron resolution and tuneable hydrolysis. SCRIBE enables direct printing of hollow microparticles with complex chemistries and geometries inaccessible to molding techniques, which are used to modulate antibody titers and class switching as ...
David J. Peeler, Rujie Sun, Ceren Kütahya, Patrick Peschke, Kun Zhou, Giulia Brachi, Jonathan Yeow, Omar Rifaie‐Graham, Jonathan P. Wojciechowski, Thomas F. F. Fernandez Debets, Vernon LaLone, Xin Song, Krunal Polra, Paul F. McKay, John S. Tregoning, Robin J. Shattock, Molly M. Stevens   +16 more
wiley   +1 more source

Post-inflationary reheating and perturbations of the cosmic microwave background [PDF]

arXiv, 1997
We formulate a gradual dynamical transition from a power-law inflation era with a scalar field to a radiation era with no scalar field including inhomogeneous perturbations to the Friedmann- Robertson-Walker universe. We show that for the cosmic microwave background radiation fluctuations this is excellently approximated by a sudden transition, with ...
arxiv  

A Deterministic Model of the Gamma Radiation at the Soil Surface–Including Soil Moisture Correction for Better Radiation Data Exploitation in Soil Mapping

Journal of Plant Nutrition and Soil Science, Volume 188, Issue 2, Page 299-311, April 2025.
ABSTRACT Background During the last decades, gamma spectrometry data have increasingly been used in soil science, for example, for mapping. However, the full data potential could not be exploited due to certain constraints, among which the insufficient representation of attenuating materials (in particular, water) in correction algorithms is the most ...
Ludger Herrmann, Georg Zimmermann
wiley   +1 more source

Comments and Summary on the Cosmic Background Radiation [PDF]

Symposium - International Astronomical Union, 1983
This session on the cosmic background radiation is remarkable for the quality of the interesting new results presented and the controversy over substantive issues. This paper reviews the status of measurements of the spectrum and anisotropy of the cosmic background and summarizes what is known of the properties of the cosmic background radiation: its ...
openaire   +3 more sources