Results 1 to 10 of about 50,253,444 (339)

A study in contrasts

1987
Abstract The Beartooth Highway (U.S. 212) lies southwest of Billings, Montana (Fig. 1). The section of highway discussed here extends from Red Lodge, Montana, to Cooke City, Montana. The road is paved and well maintained, but it may be temporarily closed by snow as early as Labor Day. It closes for the season by middle to late September,
Paul A. Mueller, William W. Locke, Joseph L. Wooden   +2 more
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A study of grating contrast judgement

Vision Research, 1977
Abstract Subjects judged the contrast of sinewave and narrow-bandwidth random gratings. The apparent contrast of gratings formed by summing two component gratings widely separated in frequency is independent of the relative phase of the component gratings and is equal to a linear sum of the subjective contrasts of the components when presented ...
J R, Hamerly, R F, Quick, T A, Reichert
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Contrast superharmonic imaging: A feasibility study

Ultrasound in Medicine & Biology, 2003
Harmonic imaging provided significant improvement in image quality by taking advantage of the scattered second harmonic (2H) component from contrast bubbles. However, differentiation between contrast and tissue (usually termed contrast-to-tissue ratio, CTR) is sometimes cumbersome and this is mainly due to tissue contamination.
Bouakaz, A., Krenning, B.J., Vletter, W.B., ten Cate, F.J., de Jong, N.   +4 more
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Study in Contrasts

Science, 2014
Astronomy![Figure][1] CREDIT: THE GRADUATE UNIVERSITY FOR ADVANCED STUDIES, JAPAN In order to image exoplanets directly, it helps to increase the contrast between the extremes of the bright stellar host and any faint companion. Close et al. report the use of an advanced adaptive optics system to observe HD142527, a young star that hosts a disk of ...
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An Approach to the Performance of Contrast Studies in Contrast Material-Reactive Persons

Annals of Internal Medicine, 1975
A method of carrying out contrast studies was considered for use in 124 persons with past histories of adverse reactions to contrast media. High-dosage steroid treatment was given before and during the contrast study to 37 patients with previous rash responses and 9 with prior anaphylactoid reactions; only 3 and 1 patients, respectively, of these ...
B, Zweiman, M M, Mishkin, E A, Hildreth
openaire   +2 more sources

Contrast study of the nasopharynx

Indian Journal of Otolaryngology, 1977
A contrast study of the nasopharynx in nasopharyngeal space occupying lesions was conducted. Both the lateral as well as the submento-vertical-views were taken prior to and after filling the nasopharynx with the contrast medium (Micropaque).
K. K. Goel, Y. P. Bhandari, R. P. Gulati, S. P. Lumba, T. L. Parmar   +4 more
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Studies of Anomalous Contrast and Assimilation*

Journal of the Optical Society of America, 1963
Studies of von Bezold type of “spread” or assimilation, wherein white lines lighten and black lines darken contiguous areas, have shown that the effect depends upon both absolute and relative widths of the lines and intervening areas and their respective reflectances.
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Contrast studies.

Radiologic technology, 2007
Contrast media plays an important role in imaging soft tissues and organs. Though contrast imaging is considered safe, radiologic technologists can improve the safety of contrast examinations by reviewing institutional safety procedures, safe practices for different methods of contrast administration and possible complications.
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Gastrointestinal contrast studies

Diseases of the Colon & Rectum, 1990
Everett Shocket, Robert E. Brolin
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A Study in Constrasts

2014
Speech given at the 1930 Biennial Meeting of the Canadian Nurses Association. Published in The Canadian Nurse XXVI, October 1930.
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