Results 261 to 270 of about 7,431,143 (302)
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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
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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
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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
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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
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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
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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
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European survey of dental X-ray equipment
Radiation Protection Dosimetry, 2008The implementation of an X-ray Quality Assurance (QA) program is a legal requirement in Europe as stipulated in the EU Council Directive 97/43/EURATOM (MED). A review of the literature has identified that European countries are performing some level of QA testing of their dental X-ray equipment, although the type and level to which testing is performed
A, Gallagher +7 more
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2016
X-rays were discovered by accident in 1895 by Wilhelm Rontgen who was studying electrical discharges in gases. His work won him the first-ever Nobel Prize for physics in 1901.
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X-rays were discovered by accident in 1895 by Wilhelm Rontgen who was studying electrical discharges in gases. His work won him the first-ever Nobel Prize for physics in 1901.
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Casualty X-ray reporting: A student survey
Clinical Radiology, 1985The radiographs of 337 patients attending the casualty department of a large teaching hospital were reviewed by two medical students of different seniority, a radiology registrar and a consultant radiologist. All the films had been examined initially by the casualty officer when the patient attended.
N, Robson +3 more
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Bragg x-ray survey spectrometer for ITER
Review of Scientific Instruments, 2012Several potential impurity ions in the ITER plasmas will lead to loss of confined energy through line and continuum emission. For real time monitoring of impurities, a seven channel Bragg x-ray spectrometer (XRCS survey) is considered. This paper presents design and analysis of the spectrometer, including x-ray tracing by the Shadow-XOP code ...
S. K. Varshney +3 more
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1970
Chapters 1 to 3 are devoted solely to review of the X-ray sky, the environmental limitations on an experiment, and the techniques of X-ray detection. These are necessary for the design of proportional counters for a series of rocket surveys of the X-ray sky.
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Chapters 1 to 3 are devoted solely to review of the X-ray sky, the environmental limitations on an experiment, and the techniques of X-ray detection. These are necessary for the design of proportional counters for a series of rocket surveys of the X-ray sky.
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The Results of the Boston Chest X-Ray Survey
New England Journal of Medicine, 1950COMMUNITY-WIDE x-ray surveys had been conducted in eight cities of the United States of over 100,000 population, in co-operation with the Division of Tuberculosis of the United States Public Health...
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