Results 251 to 260 of about 11,567,492 (307)
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Coherent Control of XUV Radiation
Ultrafast Phenomena, 2000We demonstrate that using phase-only control of ultrafast pulses, we can selectively enhance the brightness of high-harmonic generation by over an order of magnitude, and generate near transform-limited soft x-ray pulses.
R. Bartels +7 more
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The control of radiation caries
The British Journal of Radiology, 1973One of the accepted side effects of megavoltage radiotherapy to neoplasms of the mouth and pharynx is a diminution of salivary flow. This is at its greatest when two opposed fields are used for lesions of the nasopharynx and oropharynx. Secretions from both parotids and both submandibular salivary glands as well as some of the many small mucosal glands,
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The control of indoor radiation exposure
Science of The Total Environment, 1985Surveys of natural radiation indoors permit improved estimates to be made of exposures nationally and of regional variations. In the UK, there are clear indications that individual doses from radon decay products can be more than two orders of magnitude above the national average.
A D, Wrixon, M C, O'Riordan
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Legislative Control of Radiation
Radiology, 1956The Problem The control of radiation by legislative means in the United States is a complicated problem, all the many facets of which cannot be shown in one short paper.2 However, to present a discussion of some of the history, the philosophy, the progress to date, and the proposals of the National Committee on Radiation Protection seems a very worth ...
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Radiation Exposure, Radiation Control and Decontamination
1980The radiation exposure received by nuclear power plant personnel is determined by the radiation fields to which the personnel are exposed and the length of time of exposure. This paper will discuss only the former, the radiation fields. In particular the design and operational features of nuclear power plants which most influence the buildup of these ...
Robert A. Shaw +2 more
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Radiation Control at the Grassroots
Radiology, 1959The first place that most of us have looked to see if radiation exposures can be reduced has been in our own radiological offices and departments. Protection, like charity, properly starts at home, and self-inspection and re-evaluation of our own technics have been a worthwhile activity.
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Control of Radiation in Animal Facilities
Journal of the American Veterinary Medical Association, 1977SUMMARY Use of radioactive materials in animals for research and clinical studies is on the increase. These studies may be undertaken with little or no disruption of normal facility operations if a few facts are considered. The primary factor of consideration is the radiopharmaceutical—its pharmacologic behavior and physical characteristics.
D, Hightower, D M, Hood, R D, Neff
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Control of radiation damage in the TEM
Ultramicroscopy, 2013The problem of electron-beam damage in the transmission electron microscope is reviewed, with an emphasis on radiolysis processes in soft materials and organic specimens. Factors that determine the dose-limited resolution are identified for three different operational modes: bright-field scattering-contrast, phase-contrast and dark-field microscopy ...
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Computer-Controlled Radiation Therapy
Radiology, 1978Radiation therapy is often hampered in important body regions by the need to transit sensitive normal tissues which act as dose-limiting barriers. Computer-controlled radiation therapy permits the simultaneous variation of multiple treatment parameters during irradiation of the patient, producing improved dose distributions with the potential for ...
M B, Levene +4 more
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Control and Management of the Radiation Environment
American Journal of Roentgenology, 2010867 quirements. A joint radiologist–physicist project would allow for additional benefits. Radiologists by training have always been masters of the radiation environment. With the recent concerns of colleagues, government regulators, and the public about the risks and possible misuses of radiation it is important for the profession to demonstrate that ...
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