Results 221 to 230 of about 20,133 (264)
Some of the next articles are maybe not open access.
The Journal of Prosthetic Dentistry, 1956
PPROXIMATELY ONE HUNDRED YEARS ago, it was learned that certain crystal A elements contracted in a magnetic field. Shortly thereafter a similar property was discovered in certain metals which, if rod-shaped, contracted in the direction of their long axes.
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PPROXIMATELY ONE HUNDRED YEARS ago, it was learned that certain crystal A elements contracted in a magnetic field. Shortly thereafter a similar property was discovered in certain metals which, if rod-shaped, contracted in the direction of their long axes.
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Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 2009
A detailed review is given of the application of high-frequency ultrasound (HFUS) at frequencies of 20 MHz and above for high-resolution, cross-sectional imaging of biological soft tissue. The state of the art of HFUS imaging systems is discussed with respect to the underlying engineering concepts, system designs, and available transducer technology ...
M, Vogt +3 more
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A detailed review is given of the application of high-frequency ultrasound (HFUS) at frequencies of 20 MHz and above for high-resolution, cross-sectional imaging of biological soft tissue. The state of the art of HFUS imaging systems is discussed with respect to the underlying engineering concepts, system designs, and available transducer technology ...
M, Vogt +3 more
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Retreatodontics and ultrasonics
Journal of Endodontics, 1988Retreatment of endodontically failing teeth is commonin most endodontic practices today. Two case reports are presented in which ultrasonics was used for retreatment. It is suggested that ultrasound can ease and, to some extent, simplify retreatment of some endodontic failures.
D E, Stamos, D G, Stamos, S K, Perkins
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The Journal of the Acoustical Society of America, 2012
A ultrasonic transducer of the invention comprises: a transducer cell including a first electrode and a second electrode disposed separated from the first electrode by an air gap portion; and an electret for applying a potential difference between the first electrode and the second electrode.
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A ultrasonic transducer of the invention comprises: a transducer cell including a first electrode and a second electrode disposed separated from the first electrode by an air gap portion; and an electret for applying a potential difference between the first electrode and the second electrode.
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Molecular Biology, 2018
Ligand binding influences the dynamics of the DNA helix in both the binding site and adjacent regions. This, in particular, is reflected in the changing pattern of cleavage of complexes under the action of ultrasound. The specificity of ultrasound-induced cleavage of the DNA sugar-phosphate backbone was studied in actinomycin D (AMD) complexes with ...
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Ligand binding influences the dynamics of the DNA helix in both the binding site and adjacent regions. This, in particular, is reflected in the changing pattern of cleavage of complexes under the action of ultrasound. The specificity of ultrasound-induced cleavage of the DNA sugar-phosphate backbone was studied in actinomycin D (AMD) complexes with ...
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Journal of Clinical Ultrasound, 1976
AbstractThis speech was given by Dr. Ian Donald at the opening session of the World Federation of Ultrasound in Medicine and Biology on August 3rd in San Francisco. Dr. Ian Donald, a guest of AIUM and a guest of the conference, who has been an outstanding figure in the development of diagnostic ultrasound in England, was the speaker. Dr.
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AbstractThis speech was given by Dr. Ian Donald at the opening session of the World Federation of Ultrasound in Medicine and Biology on August 3rd in San Francisco. Dr. Ian Donald, a guest of AIUM and a guest of the conference, who has been an outstanding figure in the development of diagnostic ultrasound in England, was the speaker. Dr.
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Surgical Endoscopy, 1994
Following its development for cataract surgery, and gaining widespread use in neurosurgery and liver resection, ultrasonic dissection has been adapted for laparoscopic use. The turbulence, heat, and pressure generated by imploding bubbles disrupts tissues high in water content.
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Following its development for cataract surgery, and gaining widespread use in neurosurgery and liver resection, ultrasonic dissection has been adapted for laparoscopic use. The turbulence, heat, and pressure generated by imploding bubbles disrupts tissues high in water content.
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Journal of Clinical Periodontology, 1974
Abstract The vibrating tips of ultrasonic instruments have been shown to remove deposits mechanically. Calculus removal is equally effective with ultrasonic or hand instruments, whereas stain removal has been shown to be better with the former. It has been observed that ultrasonic instruments remove heavy supragingival calculus faster than hand ...
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Abstract The vibrating tips of ultrasonic instruments have been shown to remove deposits mechanically. Calculus removal is equally effective with ultrasonic or hand instruments, whereas stain removal has been shown to be better with the former. It has been observed that ultrasonic instruments remove heavy supragingival calculus faster than hand ...
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Nursing Standard, 1988
Lucas Dawe has produced an ultrasonic cleaner specifically for use in hospitals.
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Lucas Dawe has produced an ultrasonic cleaner specifically for use in hospitals.
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Ultrasonic endoscope and ultrasonic and ultrasonic endoscopic apparatus
The Journal of the Acoustical Society of America, 2010Yoshiaki Satoh, Kazuhiro Tsujita
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