Zobrazeno 1 - 10 of 53 pro vyhledávání: '"Alan H. Barrett"'
1
A molecular gas streamer feeding the Galactic Centre
Autor: Luis C. Ho, J. Thomas Armstrong, Alan H. Barrett, James M. Jackson, John C. Szczepanski, Paul T. P. Ho
Publikováno v: Nature. 350:309-312
Radio maps of ammonia emission around the nucleus of the Milky Way reveal a long streamer of molecular gas connecting the well known circumnuclear 2-pc ring with molecular clouds 10–20 pc further out. These clouds appear to be interacting with near
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::46923fddad9065bdb8622793b5c9cfb0
https://doi.org/10.1038/350309a0
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4
Detection of breast cancer by microwave radiometry
Autor: Alan H. Barrett, N. L. Sadowsky, P. C. Myers
Publikováno v: Radio Science. 12:167-171
A microwave radiometer at 3.3 GHz was used to map thermal radiation from the human body. As is true of infrared thermography, regions of high or low brightness may be associated with pathological conditions, such as malignant tumors or vascular block
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6229fef70a93e792a0cf00f11b37995d
https://doi.org/10.1029/rs012i06sp00167
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5
Microwave Thermography: Principles, Methods and Clinical Applications*
Autor: P. C. Myers, Alan H. Barrett, N. L. Sadowsky
Publikováno v: Journal of Microwave Power. 14:105-115
We review the physical principles, method of operation, measurement limitations, and potential medical applications of microwave thermography. We present detailed results of a study of breast cancer detection at 1.3 and 3.3 GHz, including the depende
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f5b17dd4410330c38e2cc0d5fe24626a
https://doi.org/10.1080/16070658.1979.11689136
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7
Microwave absorption and emission in the atmosphere of Venus
Autor: Alan H. Barrett
Publikováno v: Journal of Geophysical Research. 65:1835-1838
The planet Venus is obscured by a permanent cloud layer which prevents clear observation of its lower atmosphere or surface by optical techniques. Radio astronomy, however, appears to offer a means by which the lower atmosphere may be probed. Measure
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a80654dfd8bf59af65571740591cd067
https://doi.org/10.1029/jz065i006p01835
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8
The detection of the OH and other molecular lines in the radio spectrum of the interstellar medium
Autor: Alan H. Barrett
Publikováno v: IEEE Transactions on Antennas and Propagation. 12:822-831
The detection of the ² \Pi_{3/2}, J=3/2 \Lambda -doublet lines of O16H1at 1665.36 Mc and 1667.40 Mc has provided radio astronomy with a second spectral line for investigation and has already given rise to a number of significant results. In this pap
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d62a000d2db45ed7832e9cecdd14e0bd
https://doi.org/10.1109/tap.1964.1138328
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10
Observations of Circularly Polarized OH Emission and Narrow Spectral Features
Autor: Alan E. E. Rogers, Alan H. Barrett
Publikováno v: Nature. 210:188-190
IN a recent publication we reported the detection of linearly polarized OH emission from a localized region near the radio source W3 (ref. 1). Although the mechanism of production of the polarized emission was not understood, we pointed out that, amo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::05919a4cea9b808dd48faf33a012a34a
https://doi.org/10.1038/210188b0
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