Results 11 to 20 of about 30,144 (262)
Energies, 2021 The matrix pores of a coalbed methane (CBM) reservoir are mostly nanoscale pores, with tiny pore throats and poor connectivity, which belong to the category of low–permeability gas reservoirs. The matrix particles and organic pore surfaces adsorb a large
Xin Li +12 more
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Notulae Scientia Biologicae, 2012 In this research, internal cracks and collapse of wood, formed during drying process, were measured using ultrasonic inspection. For this purpose, seven poplar (Populus nigra) small blocks were dried, according to a time-based schedule. Ultrasonic waves
Saeid ESHAGHI +2 more
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An Estimation of Wave Attenuation Factor in Ultrasonic Assisted Gravity Drainage Process [PDF]
Iranian Journal of Oil & Gas Science and Technology, 2014 It has been proved that ultrasonic energy can considerably increase the amount of oil recovery in an immiscible displacement process. Although many studies have been performed on investigating the roles of ultrasonic waves, based on the best of our ...
Behnam Keshavarzi +3 more
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Nuclear Engineering and Technology, 2021 Ultrasonic nondestructive testing is important for monitoring the structural integrity of dissimilar metal welds (DMWs) in pressure vessels and piping in nuclear power plants.
Munsung Kim +6 more
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Using ultrasonic as a new approach for elimination of inorganic scales (NaCl): an experimental study
Journal of Petroleum Exploration and Production Technology, 2017 Because inorganic scales reduce permeability near wellbores, they cause an additional pressure drop in this region (skin damage) and reduce production. NaCl precipitation, particularly in gas-producing wells, is one of the formation damage problems which
Jaber Taheri-Shakib +4 more
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Propagation and Attenuation Characteristics of an Ultrasonic Beam in Dissimilar-Metal Welds
Sensors, 2020 Ultrasonic inspection of welds joining dissimilar metals in nuclear power plants has proven to be a challenge, because the ultrasonic waves are subject to diffraction, distortion, scattering, and noise.
Young-In Hwang +5 more
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Sensors, 2018 The accumulation of fouling within a structure is a well-known and costly problem across many industries. The build-up is dependent on the environmental conditions surrounding the fouled structure.
Habiba Lais +4 more
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MODELLING OF EXTRINSIC FIBER OPTIC SAGNAC ULTRASOUND INTERFEROMETER USED FOR DISPLACEMENT MEASUREMENTS [PDF]
Journal of Fundamental and Applied Sciences, 2012 Ultrasonic waves are used extensively in nondestructive testing both for characterization of material properties, in this paper, we describe a fiber optic sensor suitable for detection of ultrasonic waves. This sensor is based on an extrinsic fiber optic
S. BENHAMIDA, F. Rehouma
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Effect of ultrasound waves against infection with giardiasis in Rattus norvegicus rats. [PDF]
مجلة التربية والعلم, 2018 The present study investigated the effect of the direct ultrasonic waves, as an immune stimulator, against infection with giardiasis caused by Giardia lamblia in Norwegian rat, Rattus norvegicus. The pathological changes occurred in the rats administered
Asmaa Ali, Hiba Khudher
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Feasibility Analysis on the Use of Ultrasonic Communications for Body Sensor Networks
Sensors, 2018 Ultrasonic waves have good propagation in the human body and have been widely applied in biomedical device design without any reported side effects. Therefore, ultrasonic waves can provide an alternative method as an information carrier for body sensor ...
Meina Li, Youn Tae Kim
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