Radiology of the Teeth and Jaws, Including dental Radiography. For Students and Practitioners of Dental Surgery and RadiologyRadiology of the Teeth and Jaws, Including dental Radiography. For Students and Practitioners of Dental Surgery and Radiology. By IngramFrank L., D.M.R.D., L.D.S., M.R.C.S., L.R.C.P., Senior Assistant in the Diagnostic X-Ray Department of Guy's Hospital, Lecturer in Dental Radiology at Guy's Hospital Dental School. A volume of 128 pages, with 281 illustrations. Published in the United States by Williams & Wilkins Co., Baltimore, 1950. Price $3.50.

Radiology ◽  
1951 ◽  
Vol 56 (6) ◽  
pp. 893-893
Keyword(s):  
United States ◽  
The United States ◽  
Dental Radiography ◽  
Dental School ◽  
Dental Radiology ◽  
Dental Surgery ◽  
X Ray

scholarly journals Results from the 1977 coordinated observing campaign on HDE 226868 = Cygnus X-1

1979 ◽  
Vol 83 ◽  
pp. 297-298
Author(s):  
C. T. Bolton
Keyword(s):  
United States ◽  
Great Britain ◽  
Soviet Union ◽  
The United States ◽  
Radio Flux ◽  
International Astronomical Union ◽  
X Ray ◽  
The Soviet Union ◽  
International Astronomical ◽  
Flux Measurements

A coordinated campaign of radio, optical, and x-ray observations of the bright x-ray source Cygnus X-1 took place August 7–21, 1977 under sponsorship of Commission 42 of the International Astronomical Union. Radio flux measurements, optical spectra, photometry, and polarimetry were obtained during this period by ten groups from Canada, Great Britain, the Soviet Union, and the United States. The x-ray flux was monitored continuously by the SAS-3 satellite between August 11.0 and 17.0.

scholarly journals Development of Inert, Polymer-Bonded Simulants for Explosives Detection Systems Based on Transmission X-ray

Molecules ◽  
2019 ◽  
Vol 24 (23) ◽  
pp. 4330 ◽  
Author(s):  
Mitja Vahčič ◽  
David Anderson ◽  
Miguel Ruiz Osés ◽  
Grzegorz Rarata ◽  
Gabriela Diaconu
Keyword(s):  
United States ◽  
Effective Atomic Number ◽  
The United States ◽  
Explosives Detection ◽  
Civil Aviation ◽  
X Ray ◽  
Detection Systems ◽  
Wide Range ◽  
Fit For Purpose ◽  
Inert Polymer

Explosives detection systems (EDS) based on X-ray are used at airports to screen baggage for the presence of explosives. In Europe and the United States, EDS equipment is tested extensively by specialist test centres prior to approval for operational use in airports. Once EDS are installed in airports, however, it can be challenging to test the EDS equipment and verify that it continues to perform at the highest level, because of the impracticality of introducing bulk explosives into civil aviation airports. We have developed inert, non-toxic polymer-bonded simulants and validated them against real explosives using EDS equipment. The accuracy of our simulants is within 1% of the target bulk density, and within 2% of the target effective atomic number, and the materials have a stability of at least 4 years, with an uncertainty of 0.5%. The simulants generate alarms in almost 100% of cases on a wide range of commercial EDS models, and we consider the simulants fit for purpose for use during testing of EDS equipment at airports.

Assessment of Skin Entrance Kerma in the United States: The Nationwide Evaluation of X Ray Trends (NEXT)

1992 ◽  
Vol 43 (1-4) ◽  
pp. 71-73 ◽  
Author(s):  
F.G. Rueter ◽  
B.J. Conway ◽  
J.L. McCrohan ◽  
R.J. Slayton ◽  
O.H. Suleiman
Keyword(s):  
United States ◽  
The United States ◽  
X Ray
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