Results 261 to 270 of about 67,039 (310)
Asymptomatic tuberculosis in Japan: a 15-year national surveillance study, 2008-2022. [PDF]
Lancet Reg Health West PacUkai T +5 more
europepmc +1 more source
Deep Extragalactic X-Ray Surveys
Annual Review of Astronomy and Astrophysics, 2005 ▪ Abstract Deep surveys of the cosmic X-ray background are reviewed in the context of observational progress enabled by the Chandra X-Ray Observatory and the X-Ray Multi-Mirror Mission-Newton. The sources found by deep surveys are described along with their redshift and luminosity distributions, and the effectiveness of such surveys at selecting ...
W N Brandt, G Hasinger
exaly +4 more sources
The X-ray background and the deep X-ray surveys [PDF]
Advances in Space Research, 2004 10 pages, 4 figures. Invited review talk, to appear in New X-ray Results from Clusters of Galaxies and Black Holes (Oct 2002; Houston, TX), eds. C. Done, E.M. Puchnarewicz, M.J.
R Gilli
exaly +3 more sources
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Journal of the American Medical Association, 1956
To the Editor:— In an editorial inThe Journal, April 23, 1955, page 1499, Garland indicated that the yield of new active cases of tuberculosis resulting from chest x-ray surveys was small. He raised the question whether it would not be timely and appropriate to reevaluate the usefulness of this measure as a case-finding tool. During the past two years
D W, ZAHN, J H, FOUNTAIN, C, NORTHROP
openaire +2 more sources
To the Editor:— In an editorial inThe Journal, April 23, 1955, page 1499, Garland indicated that the yield of new active cases of tuberculosis resulting from chest x-ray surveys was small. He raised the question whether it would not be timely and appropriate to reevaluate the usefulness of this measure as a case-finding tool. During the past two years
D W, ZAHN, J H, FOUNTAIN, C, NORTHROP
openaire +2 more sources
Science, 1970
An x-ray survey of Centaurus A has given marginal evidence of its x-ray flux. If taken as an upper limit on inverse Compton x-rays generated by scattering interactions between relativistic electrons and cosmological background photons, the observation implies an upper limit of close to 3°K for the background radiation temperature.
E T, Byram, T A, Chubb, H, Friedman
openaire +2 more sources
An x-ray survey of Centaurus A has given marginal evidence of its x-ray flux. If taken as an upper limit on inverse Compton x-rays generated by scattering interactions between relativistic electrons and cosmological background photons, the observation implies an upper limit of close to 3°K for the background radiation temperature.
E T, Byram, T A, Chubb, H, Friedman
openaire +2 more sources
Results from X-ray surveys with ASCA [PDF]
AIP Conference Proceedings, 2001 10 pages, 5 figures, invited talk at the X-ray Astronomy 1999 Meeting held in Bologna, Italy, Astrophysical Letters and Communications, in ...
Yoshihiro Ueda
exaly +3 more sources
Astronomische Nachrichten, 1998
AbstractTo mark the occasions of the 35th anniversary of the birth of X‐ray astronomy on June 18, 1962, and the 7th anniversary of the first light of ROSAT on June 16, 1990, the Astrophysikalisches Institut Potsdam (AIP) and the NASA Goddard Space Flight Center X‐ray Astrophysics Branch cosponsored a workshop entitled “X‐ray Surveys”.
G. Hasinger, N. E. White
openaire +1 more source
AbstractTo mark the occasions of the 35th anniversary of the birth of X‐ray astronomy on June 18, 1962, and the 7th anniversary of the first light of ROSAT on June 16, 1990, the Astrophysikalisches Institut Potsdam (AIP) and the NASA Goddard Space Flight Center X‐ray Astrophysics Branch cosponsored a workshop entitled “X‐ray Surveys”.
G. Hasinger, N. E. White
openaire +1 more source