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Effects of ultrasonic irradiation on the spectrophotometric determination of nickel with dimethylglyoxime
(2001)
Influence of ultrasonic waves in the spectrophotometric determination of nickel with dimethylglyoxime (DMG) was investigated and interferences from foreign species such as Co2+, Fe2+ and Cu2+ were studied. A 1.5-fold ...
Thermal characterization of an ultrasonic density-measurement cell
(Institute of Electrical and Electronics Engineers (IEEE), 2007-06-01)
An ultrasonic density-measurement cell is experimentally characterized as a function of temperature. The measurement of propagation velocity and density of several liquids is performed in the 15 degrees C-40 degrees C ...
Post space debridement in oval-shaped canals: The use of a new ultrasonic tip with oval section
(ELSEVIER SCIENCE INC, 2008)
This study evaluates the effect on post space debridement in oval-shaped canals of an experimental ultrasonic tip with oval section (Satelec) compared with a circular ultrasonic tip (KaVo). Thirty teeth with an oval-shaped ...
Influence of ultrasonic setting on compressive and diametral tensile strengths of glass ionomer cements
(ABM, ABC, ABPol, 2008)
The aim of this study was to assess the influence of ultrasonic wave propagation on the compressive (CS) and diametral tensile (DTS) strengths of glass ionomer cements (GICs). Three variables were evaluated: conventional ...
Supportive Periodontal Treatment and Full-mouth Ultrasonic Debridement: A Randomised Controlled Clinical Trial
(Quintessence Publishing Co Inc, 2014-01-01)
Purpose: To evaluate the effect of different maintenance recall intervals in patients with chronic periodontitis treated by full-mouth ultrasonic debridement. Materials and Methods: Twenty-eight patients participated in ...
Rats Synchronize Locomotion with Ultrasonic Vocalizations at the Subsecond Time Scale
(2016-09)
Acoustic signals have the potential for transmitting information fast across distances. Rats emit ultrasonic vocalizations of two distinct classes: “22-kHz” or “alarm” calls and “50-kHz” calls. The latter comprises brief ...
Reconstrução de imagens de ultrassom usando esparsidade: métodos iterativos rápidos
(Universidade Tecnológica Federal do ParanáCuritibaBrasilPrograma de Pós-Graduação em Engenharia Elétrica e Informática IndustrialUTFPR, 2017-08-23)
This study contributes to the search for fast iterative methods for ultrasonic sparse image reconstruction. The goal is achieved in three steps: the validation of a discrete acquisition model, a comparative evaluation of ...
Anelastic relaxation due to OH pairs in NbZr alloys
(Elsevier B.V., 1994-09-01)
In the last 30 years several studies have been made to understand the relaxation mechanisms of the hydrogen atoms present in transition metals and their alloys. In this work, we observed the stress-induced ordering of ...