Results 241 to 250 of about 50,271 (288)
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Scanning photoacoustic microscopy using photothermal radiometric detection
Second International Meeting on Photoacoustic Spectroscopy, 1981A thin film structure exposed to pulsewise illumination may experience pulsating temperature variations in its surface layers. The amplitude of those temperature fluctuations depends on the absorption spectrum of the sample and may be measured photothermally by observing similar pulsations in the thermal reradiation.
B. Stadler +4 more
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Radiometric detection and analysis of arcing faults
IEEE Transactions on Dielectrics and Electrical Insulation, 2015A novel method for long-range detection and potential location of arcing faults on electrical distribution networks is described and investigated. When a network fault induces an electrical arc it is accompanied by the radiation of electromagnetic transients that can be detected remotely as a radio frequency signal.
Harris, Rachel M. +3 more
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Low SNR radiometric detection in cognitive radio
2014 International Conference on Signal Processing and Integrated Networks (SPIN), 2014Current spectrum scarcity is result of inefficient spectrum utilization. This underutilized spectrum causes hurdle in implementation of emerging wireless technologies which require more frequency spectrum. Cognitive radio (CR) has provided a promising solution to the current spectral requirement problem by efficient spectrum sharing.
Deep Raman +2 more
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Radiometric crack detection in fast moving surfaces
Applied Physics Letters, 1985Cracks in the surfaces of metal shafts rotating up to 3200 rpm were detected by passive, radiometric sensing of the 8–12-μm thermal radiation emitted. This detection is possible because the effective crack emissivity approaches that of a black body, while the metal itself has a much lower emissivity. By the use of signal storage and signal subtraction,
Irving Kaufman, Ashish K. Choudhury
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Interpretation of radiometric signal for tumor detection
Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136), 2002Method for interpretation of radiometrically measured microwave signal by numerical simulation of radiometric signal generation inside multi-layered breast tissues has been developed using FDTD method. A radiometric system for exploration of breast tumors based on a Dicke radiometer with two body-contacting waveguide antennas has been designed. Special
J. Riipulk, H. Hinrikus
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Fake face detection based on radiometric distortions
2016 Sixth International Conference on Image Processing Theory, Tools and Applications (IPTA), 2016Securing face recognition systems against replay attacks has been recognized as a real challenge. In this work, the problem of fake face detection is addressed by modelling radiometric distortions involved in the recapturing process. The originality of our approach is that the fake face detection process occurs after the face identification process ...
Taiamiti Edmunds, Alice Caplier
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Laboratory experience with a radiometric method for detecting bacteremia
Journal of Clinical Microbiology, 1975Two bacteriologic systems for detecting bacteria in blood were compared; the automated radiometric BACTEC and the conventional method used in our laboratory for many years. BACTEC consisted of two bottles with 30 ml and the conventional method with 50 ml of media for aerobes and anaerobes.
W A, Thiemke, K, Wicher
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Radiometric detection of herpes simplex viruses.
Journal of nuclear medicine : official publication, Society of Nuclear Medicine, 1978Two radiometric techniques were investigated as possible means of detecting viruses in clinical specimens. The effect of herpes simplex virus on DNA synthesis by monolayers of human embryonic lung fibroblasts was monitored by the incorporation of [3H] thymidine or [125I] iododeoxyuridine ([125I] IdU).
N L, D'Antonio +4 more
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Radiometric Detection of Haemophilus Influenzae in Cerebrospinal Fluid Specimens
Scandinavian Journal of Infectious Diseases, 1978The investigation demonstrates the usefulness of a radiometric urease test in the rapid detection of Haemophilus influenzae in cerebrospinal fluid specimens. The test is simple and economical to perform and results are obtained within a one hour incubation period.
F R, Cox +4 more
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Improved blood culture medium for radiometric detection of yeasts
Journal of Clinical Microbiology, 1979The influence of medium composition on the rate of CO2 production by yeasts in simulated blood cultures was determined in the Bactec radiometric system. A yeast nitrogen base broth containing [14C]glucose and Triton X-100 allowed the detection of positive cultures earlier than the regular Bactec blood culture media.
R L, Hopfer, K, Mills, D, Gröschel
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