Results 21 to 30 of about 3,974,952 (312)
Broadband Ultrasonic Location Systems for Improved Indoor Positioning [PDF]
, 2006 Ultrasonic location systems are a popular solution for the provision of fine-grained indoor positioning data. Applications include enhanced routing for wireless networks, computer-aided navigation, and location-sensitive device behavior. However, current
Hopper, Andy, Hazas, Michael
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Trudy Odesskogo Politehničeskogo Universiteta, 2014 The prospect of using ultrasonic devices is presented for intensification of technological processes of cutting and pricking of fabrics, artificial and natural leathers with imposition of ultrasonic vibrations on the instrument.
Аль-Яфаї Наср +2 more
doaj +5 more sources
Ultrasonic components of musical instruments [PDF]
Proceedings of Meetings on Acoustics, 2016 There are few works characterizing the ultrasonic components emitted by musical instruments, primarily because it did not seem worthwhile to measure an energy that was difficult to register and that it is not perceived by humans. Registering sounds over 20 kHz is possible today with typical audio equipment.
Jorge Petrosino, Ianina Canalis
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Antimicrobial Stewardship & Healthcare Epidemiology, 2023 Objectives: Dental instruments are contaminated by blood and saliva during dental procedures. To prevent cross infection, all contaminants should be removed from the surfaces of instruments.
Vivian Man, Tian Cheng Neo
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Crystals, 2021 A key technical problem in the preparation of Al-Ti-C grain refiner and other composite materials is the poor wetting of the Al-C interface, which greatly restricts the development of the preparation technology of related composite materials.
Jingtao Zhao +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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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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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
doaj
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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The development of an ultrasonic Doppler bed-load velocimeter [PDF]
, 1989 Includes bibliography.A instrument has been developed for measuring the velocity of solid particles adjacent to the pipe wall in a solids-liquid pipeline.
Lazarus, Mark Doron
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