Results 161 to 170 of about 2,710 (218)
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The Journal of the Acoustical Society of America, 1981
An ultrasonic detection system having an array of ultrasonic transducers that are uniformly closely disposed relative to each other such that the active surfaces for transmission or reception are maintained on a straight or curved line. The transducers form radiation or reception beams in a specific direction.
Kiyomi Minohara +5 more
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An ultrasonic detection system having an array of ultrasonic transducers that are uniformly closely disposed relative to each other such that the active surfaces for transmission or reception are maintained on a straight or curved line. The transducers form radiation or reception beams in a specific direction.
Kiyomi Minohara +5 more
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Ultrasonic Flaw Detection Method And Ultrasonic Flaw Detection Device
The Journal of the Acoustical Society of America, 2011An ultrasonic transmission medium (2) is received in a medium container (10), and an opening of the container is sealed by a polymer membrane (1). An inspection object (6) is received in an inspection object receiving container body (12) that is a separate body from the medium container (10) and whose opening is formed opposite the polymer membrane of ...
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Antepartum Ultrasonic Detection of Multicystic Kidney
Radiology, 1979A multicystic fetal kidney was detected antepartum with gray-scale ultrasound. This appears to be the first proved case.
J E, Friedberg, J S, Mitnick, D A, Davis
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Pitfalls in ultrasonic detection of pleural fluid
Journal of Clinical Ultrasound, 1978AbstractThis is a report of proven massive infiltration of Hodgkin's disease of the lung with correlative sonographic, roentgenographic, and pathologic findings. Special emphasis is placed on the difficulties in distinguishing pleural fluid from massive tumor infiltration of the lung by Hodgkin's disease.
M S, Shin, P W, Gray
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An Ultrasonic Method for Detecting Air Embolism
Journal of Neurosurgery, 1969R EMBOLISM is a well-recognized hazard of neurosurgical operations performed in the sitting position. Even with the most assiduous use of prophylactic measures such as frequent irrigation of the surgical field with physiological saline and the liberal application of bone wax and wet cottonoids, serious air embolism still occurs.
J C, Maroon +2 more
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Detection of Pregnancy in Ewes with the Ultrasonic Scanopreg
Journal of Animal Science, 1981The accuracy of the ultrasonic Scanopreg was evaluated in tests with 24 commercials, West Virginia ewe flocks. Two Scanopreg units were used to check for pregnancy in 1,644 ewes that had been exposed to rams during the fall breeding season. Predictions were compared against lambing records. Possible accuracy errors were: type 1 (ewes diagnosed pregnant
S F, Lane, P E, Lewis
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Ultrasonic Detection of Delaminations on Composite Materials
Journal of Reinforced Plastics and Composites, 1997An accurate N.D.I. methodology can give a good knowledge of the internal damage status. The main purpose of the present paper is to describe the testing methodology and to discuss the testing procedures that have been performed in order to evaluate the position and the dimensions of the delaminations that occur in different composite materials under ...
SCARPONI, Claudio, Giuseppe Briotti
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Ultrasonic detection of colonic carcinoma in emergency
Diseases of the Colon & Rectum, 1984The role of ultrasound scanning in the diagnosis of cancer of the colon under emergency conditions such as intestinal obstruction, perforation or, more rarely, heavy colonic bleeding, is discussed. In any case, ultrasound scanning can quickly and rationally indicate choices for further assessment when possible.
M, Sianesi +3 more
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Ultrasonic Based Proximity Detection for Handsets
2018 26th European Signal Processing Conference (EUSIPCO), 2018A novel approach for proximity detection on mobile handsets which does not require any additional transducers is presented. The method is based on transmitting a chirp and processing the received signal by applying Least Mean Square (LMS), where the desired signal is the transmitted chirp. The envelope of three signals (estimated filter taps, estimated
Pablo Peso Parada, Rahim Saeidi
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Ultrasonic Detection of Nonopaque Renal Calculi
Radiology, 1978Four patients with 5 nonopaque renal calculi composed of uric acid were examined by ultrasound. The calculi varied in size from a 1.5 X 1.5-cm intrapelvic stone to a staghorn calculus measuring 4 cm. All stones were satisfactorily imaged by ultrasound, allowing a diagnosis of nephrolithiasis to be made with confidence in each case.
H M, Pollack +3 more
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