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Your search keyword '"Sharp, E. H."' showing total 27 results
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27 results on '"Sharp, E. H."'

1. The optical performance of frequency selective bolometers

Author

Perera, T. A., Chen, T. C., Cheng, E. S., Cottingham, D. A., Crawford, T. M., Downes, T. P., Finkbeiner, F. M., Fixsen, D. J., Logan, D. W., Meyer, S. S., Sharp, E. H., Silverberg, R. F., and Wilson, G. W.

Subjects
Astrophysics
Abstract

Frequency Selective Bolometers (FSBs) are a new type of detector for millimeter and sub-millimeter wavelengths that are transparent to all but a narrow range of frequencies as set by characteristics of the absorber itself. Therefore, stacks of FSBs tuned to different frequencies provide a low-loss compact method for utilizing a large fraction of the light collected by a telescope. Tests of prototype FSBs, described here, indicate that the absorption spectra are well predicted by models, that peak absolute absorption efficiencies of order 50% are attainable, and that their out-of-band transmission is high., Comment: 32 pages, 9 figures

Published
2006
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7. Stray Light Suppression in the Goddard IRAM 2-Millimeter Observer (GISMO)

Author

Sharp, E. H, Benford, D. J, Fixsen, D. J, Moseley, S. H, Staguhn, J. G, and Wollack, E. J

Subjects
Instrumentation And Photography
Abstract

The Goddard-IRAM Superconducting 2 Millimeter Observer (GISMO) is an 8xl6 Transition Edge Sensor (TES) array of bolometers built as a pathfinder for TES detector development efforts at NASA Goddard Space Flight Center. GISMO has been used annually at the Institut de Radioastronomie Millimetrique (IRAM) 30 meter telescope since 2007 under engineering time and was opened in the spring of 2012 to the general astronomical community. The spring deployment provided an opportunity to modify elements of the room temperature optics before moving the instrument to its new permanent position in the telescope receiver cabin. This allowed for the possibility to extend the cryostat, introduce improved cold baffling and thus further optimize the stray light performance for final astronomical use of the instrument, which has been completed and validated. We will demonstrate and discuss several of the methods used to quantify and limit the influence of stray light in the GISMO camera.

Published
2012

9. Optical performance of frequency-selective bolometers

Author

Perera, T. A., primary, Downes, T. P., additional, Meyer, S. S., additional, Crawford, T. M., additional, Cheng, E. S., additional, Chen, T. C., additional, Cottingham, D. A., additional, Sharp, E. H., additional, Silverberg, R. F., additional, Finkbeiner, F. M., additional, Fixsen, D. J., additional, Logan, D. W., additional, and Wilson, G. W., additional

Published
2006
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10. The TopHat Experiment: A Balloon‐borne Instrument for Mapping Millimeter and Submillimeter Emission

Author

Silverberg, R. F., primary, Cheng, E. S., additional, Aguirre, J. E., additional, Bezaire, J. J., additional, Crawford, T. M., additional, Meyer, S. S., additional, Bier, A., additional, Campano, B., additional, Chen, T. C., additional, Cottingham, D. A., additional, Sharp, E. H., additional, Christensen, P. R., additional, Cordone, S., additional, Timbie, P. T., additional, Dame, R. E., additional, Fixsen, D. J., additional, Kristensen, R. J. K., additional, Norgaard‐Nielsen, H. U., additional, and Wilson, G. W., additional

Published
2005
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11. Lightweight long-hold-time Dewar

Author

Fixsen, D. J., primary, Cheng, E. S., additional, Crawford, T. M., additional, Meyer, S. S., additional, Wilson, G. W., additional, Oh, E. S., additional, and Sharp, E. H., additional

Published
2001
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16. Is coronary artery bypass in the community hospital justifiable?

Author

Horsley BL, Cox WD, Schmitt EH, and Sharp EH

Subjects
Adult, Aged, Coronary Disease surgery, Female, Humans, Male, Middle Aged, Postoperative Complications mortality, Quality of Life, United States, Coronary Artery Bypass methods, Coronary Artery Bypass mortality, Hospitals, Community
Abstract

Coronary artery bypass can be performed at the community hospital level with results comparable to those in major university centers. Four hundred and ninety-seven patients were operated on between 1970 and 1976 with an overall early mortality of 4.4% (2.6% for coronary artery bypass only) and improvement in the quality of life in 88% of patients.

Published
1977

20. Traumatic rupture of thoracic aorta.

Author

Sharp EH, Cox WD, and Mullin R

Subjects
Accidents, Traffic, Adolescent, Aortic Rupture diagnostic imaging, Aortic Rupture surgery, Blood Vessel Prosthesis, Extracorporeal Circulation, Humans, Male, Radiography, Aorta, Thoracic injuries, Aortic Rupture etiology
Published
1973

27. Traumatic rupture of thoracic aorta.

Author

Sharp EH, Cox WD, and Mullin R

Subjects
Accidents, Traffic, Adolescent, Aortic Rupture diagnosis, Aortic Rupture diagnostic imaging, Aortic Rupture surgery, Humans, Male, Radiography, Wounds and Injuries complications, Aorta, Thoracic injuries, Aortic Rupture etiology
Published
1974

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