Results 71 to 80 of about 8,679 (172)
Journal of Geophysical Research: Space Physics, Volume 129, Issue 5, May 2024.Abstract This paper presents the first observations from the prototype Space Weather Adaptive Network (SWAN) riometers, which are capable of simultaneous measurements of narrow‐band terrestrial signal power and Cosmic Noise Absorption (CNA). We describe a methodology by which we can use coincident CNA and loss of known skywave‐mode, High Frequency (HF)
F. Ghaly +6 more
wiley +1 more source
Radiation pressure confinement - II. Application to the broad line region in active galactic nuclei
, 2013 Active galactic nuclei (AGN) are characterized by similar broad emission lines properties at all luminosities ($10^{39}$-$10^{47}$ erg s$^{-1}$). What produces this similarity over a vast range of $10^8$ in luminosity?
Baskin, Alexei +2 more
core +1 more source
High‐Latitude Off‐Great Circle Propagation Associated With the Solar Terminator
Radio Science, Volume 59, Issue 5, May 2024.Abstract Large‐scale ionospheric gradients associated with the solar terminator can deflect high frequency (HF) radio waves to off‐great circle paths during the morning and evening, negatively impacting technologies reliant on HF radio wave propagation.
T. G. Cameron +4 more
wiley +1 more source
BOOK REVIEW: Two Books about FRBR, Compared
Code4Lib Journal, 2008 This article reviews 2 books on FRBR published in the past year. Although both books aim to be introductions to FRBR, their approaches are very different. One is sort of a FRBR study guide with commentary, the other a collection of essays. Robert Maxwell'
Christine Schwartz
doaj
FRAD: Front-Running Attacks Detection on Ethereum Using Ternary Classification Model
14 pages, 8 ...
Yuheng Zhang +7 more
openaire +2 more sources
Statistical Analysis of Off‐Great Circle Radio Wave Propagation in the Polar Cap
Radio Science, Volume 59, Issue 4, April 2024.Abstract High latitude ionospheric density structures such as polar cap patches and arcs are capable of deflecting high frequency (HF) radio waves to off‐great circle paths, and are likely detrimental to technologies dependent on HF radio propagation.
T. G. Cameron +4 more
wiley +1 more source
Encontros Bibli, 2013 Considerando o desenvolvimento do Resource Description and Access (RDA) e a importância do controle de autoridade para os catálogos, objetiva apresentar o RDA, seu surgimento e desenvolvimento, contextualizar a criação de registros de autoridade na ...
Fabrício Silva Assumpção +1 more
doaj +1 more source
Journal of Geophysical Research: Planets, Volume 129, Issue 3, March 2024.Abstract Toroidal atmospheres and exospheres characterized at exoplanets may be fueled by volcanically active exomoons, often referred to as exo‐Ios. We study the neutral outgassing and volatile evolution of a close‐orbiting, evaporating satellite at eight candidate exoplanet‐exomoon systems WASP‐49,‐96,‐69,‐17 b, XO‐2N b, HAT‐P‐1 b, HD‐189733 b, and ...
M. Meyer zu Westram, A. V. Oza, A. Galli
wiley +1 more source
Small‐Scale Overturn of High‐Ti Cumulates Promoted by the Long Lifetime of the Lunar Magma Ocean
Journal of Geophysical Research: Planets, Volume 129, Issue 2, February 2024.Abstract The fractional crystallization of the lunar magma ocean (LMO) results in a gravitationally unstable layering, with dense Fe‐ and Ti‐oxides overlying lighter mafic cumulates. Due to their high density, these are prone to overturn via Rayleigh‐Taylor instability.
M. Maurice, N. Tosi, C. Hüttig
wiley +1 more source
Engineering in Life Sciences, Volume 24, Issue 1, January 2024.Abstract We developed a microchip device using surface acoustic waves (SAW) and sharp‐edge glass microparticles to rapidly lyse low‐level cell samples. This microchip features a 13‐finger pair interdigital transducer (IDT) with a 30‐degree focused angle, creating high‐intensity acoustic beams converging 6 mm away at a 16 MHz frequency.
Abbas Ali Husseini +3 more
wiley +1 more source