Results 131 to 140 of about 84,680 (165)

Value of fRagmented atrial electrOgrams and intracardiac echocardiography for identification of optiMal sites for radio-frequency delivery during cArdioneuroablation for asystolic reflex syNcope: the ROMAN 5 study. [PDF]

Europace
Nowiński A, Niedźwiedź M, Sikorska A, Kryński T, Gawałkiewicz-Mazańska AM, Soszyńska M, Baran J, Kułakowski P.   +7 more
europepmc   +1 more source

Expert Knowledge-Infused Learning for Indoor Radio Propagation Environment Digital Twins. [PDF]

Sensors (Basel)
Wang H, Xu L, Zhang Y, Peng T, Wang W.
europepmc   +1 more source

Optical frequency comb integration in radio telescopes: advancing signal generation and phase calibration. [PDF]

Light Sci Appl
Hyun M, Ahn C, Choi J, Baek J, Jeong W, Je DH, Byun DY, Wagner J, Heo MS, Jung T, Kim J.   +10 more
europepmc   +1 more source

The effect of an educational campaign on contraception seeking in Northern Nigeria: an interrupted time series analysis using routine health information system data. [PDF]

Health Policy Plan
Okpani AI, Stucchi A, Cheng L, Hamza KL, Mooney D, Adu P, Zeitouny S, Grépin KA, Hutcheon J, Schummers L, Law MR.   +10 more
europepmc   +1 more source

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Theories of the Origin of Radio Sources

IEEE Transactions on Military Electronics, 1964
A discussion is given of the properties of the strong nonthermal radio sources and particularly of those of extragalactic origin. These sources radiate by the synchrotron process. The properties of the galaxies associated with the sources are described.
E. Burbidge, G. Burbidge
openaire   +1 more source

Astrometry of Southern radio sources

Astrophysics and Space Science, 1991
An overview is presented of a number of astrometry and astrophysics programs based on radio sources from the Parkes 2.7 GHz catalogues. The programs cover the optical identification and spectroscopy of flat-spectrum Parkes sources and the determination of their milliarc-second radio structures and positions.
G L, White, D L, Jauncey, B R, Harvey, A, Savage, S, Gulkis, R A, Preston, B A, Peterson, J E, Reynolds, G D, Nicolson, D F, Malin   +9 more
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Optical and radio studies of radio sources

Astronomy Letters, 2003
We present the classification of optical identifications and radio spectra of six radio sources from a complete (in flux density) sample in the declination range 10° to 12°30′ (J2000.0). The observations were carried out with the 6-m Special Astrophysical Observatory telescope (Russia) in the wavelength range 3600–10000 A, the 2.1-m GHAO telescope ...
V. L. Afanasiev, S. N. Dodonov, A. V. Moiseev, V. Chavushyan, R. Mujica, Y. Juarez, A. G. Gorshkov, V. K. Konnikova, M. G. Mingaliev   +8 more
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Models for Extragalactic Radio Sources

Symposium - International Astronomical Union, 1986
Doubt is cast on the reality of the following four assumptions commonly made in the treatment of extragalactic radio sources: (1) The central engine is a black hole; (2) Electrons can be accelerated in situ in the knots and heads of the jets, to large Lorentz factors γ ≥ 102, with an efficiency exceeding 30%; (3) The (non-thermal) radiation emitted by ...
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