Results 11 to 20 of about 47,435 (267)
Calibration of Ultrasonic Transducer Based on Ultrasonic Logging Instrument for Shaft Sinking
Sensors, 2022 High-precision logging equipment is critical for measuring the borehole diameter and drilling offset in coal mining and petroleum drilling. We propose a module composition and positioning principle for an ultrasonic transducer based on an ultrasonic ...
Maoyong Cao +5 more
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Indian Journal of Dental Research, 2021 Introduction: Retrieval of separated instrument from a root canal may lead to increased dentin loss and prolonged treatment time. Aim: The aim of this study was to evaluate the retrieval time and increase in root canal volume after instrument retrieval ...
Balu Santhosh Kumar +3 more
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Indian Journal of Dental Research, 2012 Background: The commonly accepted idea concerning root planing is that excessive removal of cementum is not necessary for removal of endotoxins. The ideal instrument should enable the removal of all extraneous substances from the root surfaces, without ...
Preeti Marda +3 more
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Ultrasonics: A Novel Approach for Retrieval of Separated Instruments [PDF]
Journal of Clinical and Diagnostic Research, 2015 An instrument fracture within the root canal interferes and hinders the outcome of the successful root canal treatment. Fracture of endodontic instrument often results from incorrect use or overuse.
Harleen Chhina +2 more
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Experimental Study on Ultrasonic Casing Damage Detection
Shiyou jixie, 2021 The number of casing damaged wells in the oilfields of PetroChina remains high, the quality problem of the wellbores is outstanding, which seriously affects the high-quality development of the oil and gas wells.
Wang Xiangyang +6 more
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Ultrasonic partial discharge monitoring method on instrument transformers [PDF]
Zbornik Radova: Elektrotehnički Institut "Nikola Tesla", 2012 Sonic and ultrasonic partial discharge monitoring have been applied since the early days of these phenomena monitoring. Modern measurement and partial discharge acoustic (ultrasonic and sonic) monitoring method has been rapidly evolving as a result of ...
Kartalović Nenad +5 more
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Development of an Accurate Resonant Frequency Controlled Wire Ultrasound Surgical Instrument
Sensors, 2020 Our developed wire ultrasound surgical instrument comprises a bolt-clamped Langevin ultrasonic transducer (BLUT) fabricated by PMN-PZT single crystal material due to high mechanical quality factor and electromechanical coupling coefficient, a waveguide ...
Jungsuk Kim +3 more
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Ultrasonic Surface Hardening of Low Carbon Steels and Non-Ferrous Alloys [PDF]
MATEC Web of Conferences, 2019 The possibility of using ultrasonic surface hardening with implementing the indenter tangential oscillations to the deformed surface to improve the quality of the detail surface layer produced from low carbon steel and ferrous alloys is considered in the
Rakhimyanov Kharis +2 more
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Journal of Applied Oral Science, 2012 OBJECTIVES: The debridement of diseased root surface is usually performed by mechanical scaling and root planing using manual and power driven instruments. Many new designs in ultrasonic powered scaling tips have been developed.
Sumita Singh, Ashita Uppoor, Dilip Nayak
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Comparative evaluation of the effectiveness of ultrasonic tips versus the Terauchi file retrieval kit for the removal of separated endodontic instruments [PDF]
Restorative Dentistry & Endodontics, 2020 ObjectiveThe aim of this study was to perform a comparative evaluation of the effectiveness of ultrasonic tips versus the Terauchi file retrieval kit (TFRK) for the removal of broken endodontic instruments.Materials and MethodsA total of 80 extracted ...
Preeti Jain Pruthi +3 more
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