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Journal articles on the topic 'Register Transducers'

Author: Grafiati

Published: 25 May 2024

Last updated: 31 July 2025

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1

Yurikov, Alexey, Nazanin Nourifard, Marina Pervukhina, and Maxim Lebedev. "Laboratory ultrasonic measurements: Shear transducers for compressional waves." Leading Edge 38, no. 5 (2019): 392–99. http://dx.doi.org/10.1190/tle38050392.1.

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The ultrasonic measurements technique is well established to measure the elastic properties of rocks in the laboratory for seismic and well-log data interpretation. The key components of every laboratory ultrasonic setup are piezoelectric transducers, which generate and register elastic waves in rock samples. The elastic properties of rocks are determined through the velocities of elastic waves, which are measured by the times of the waves' travel from the source to the receiver transducer. Transducers can be specifically designed to generate P-waves (P-transducers) or S-waves (S-transducers).

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2

Alevizos, Elias, Alexander Artikis, and Georgios Paliouras. "Complex Event Recognition with Symbolic Register Transducers." Proceedings of the VLDB Endowment 17, no. 11 (2024): 3165–77. http://dx.doi.org/10.14778/3681954.3681991.

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We present a system for Complex Event Recognition (CER) based on automata. While multiple such systems have been described in the literature, they typically suffer from a lack of clear and denotational semantics, a limitation which often leads to confusion with respect to their expressive power. In order to address this issue, our system is based on an automaton model which is a combination of symbolic and register automata. We extend previous work on these types of automata, in order to construct a formalism with clear semantics and a corresponding automaton model whose properties can be form

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Catangiu, Adrian, Ileana Nicoleta Popescu, Dan Nicolae Ungureanu, and Aurora Anca Poinescu. "Development of Experimental Device with Data Acquisition for Thermomechanical Characterization of Polymers." Scientific Bulletin of Valahia University - Materials and Mechanics 18, no. 18 (2022): 26–32. http://dx.doi.org/10.2478/bsmm-2022-0004.

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Abstract The aim of this paper is to present a handmade laboratory device with data acquisition for estimating the thermomechanical characteristics (caused by dimensional changes in height) of polymeric materials. This experimental device is able to perform penetration tests, monitoring the expansion of the samples and based on experimental tests, the thermal expansivity or coefficient of thermal expansion (CTE) can be determined. A data acquisition instrument, which register (i) the deformation of the specimen, by using two displacement transducers (an inductive proximity transducer and an tr

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Fedynets, Vasyl, and Ihor Vasylkivskyi. "Optimization of Thermal Subsystem of Thermo Transducers for Measuring the Temperature of Gas Flows." Energy engineering and control systems 8, no. 2 (2022): 110–17. http://dx.doi.org/10.23939/jeecs2022.02.110.

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The error of measuring the temperature of gas flows by contact methods consists of two main components: 1) the error that occurs in the process of measuring the physical quantity into which the temperature is converted (the error of the measuring means); 2) errors arising in the process of converting the temperature into a measured physical value using a thermo transducer. This component of the error is completely thermal in nature and is determined by the conditions of the thermal balance between the studied gas flow and the thermo transducer and has the greatest impact on the overall measure

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Pino-Ortega, José, Alejandro Bastida-Castillo, Alejandro Hernández-Belmonte, and Carlos D. Gómez-Carmona. "Validity of an inertial device for measuring linear and angular velocity in a leg extension exercise." Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology 234, no. 1 (2019): 30–36. http://dx.doi.org/10.1177/1754337119878296.

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Traditionally, linear transducers have been used to evaluate resistance exercise with linear displacement. The current problem is the assessment of exercises with curvilinear displacement. For this reason, new devices should be assessed during training sessions. The purpose was to evaluate (1) the concurrent validity of mean linear velocity and (2) the convergent validity of mean angular velocity measured by an inertial device during a leg extension exercise. Ten elite-level football players completed six series of five repetitions of a leg extension exercise. WIMU PRO™ inertial device and Gym

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Roebuck, Bryan, M. Brooks, and M. G. Gee. "Load Cell Ringing in High Rate Compression Tests." Applied Mechanics and Materials 1-2 (September 2004): 205–10. http://dx.doi.org/10.4028/www.scientific.net/amm.1-2.205.

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Mechanical test machines play an important role in providing simulation data to underpin careful analysis of high rate processes. In many cases elements of the test frame or testpiece can vibrate when subjected to a high rate force. The transducers attached to the machine frequently register this vibration superimposed on the true signal and thus may mask the signal required for analysis [1-4]. At impact all the parts of the test machine oscillate at their natural frequency (dependent on stiffness and mass). Ringing in test machines is determined by the rate at which the testpiece is deformed,

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Malinowski, Pawel, Tomasz Wandowski, Irina Trendafilova, and Wiesław M. Ostachowicz. "Multi-Phased Array for Damage Localisation." Key Engineering Materials 347 (September 2007): 77–82. http://dx.doi.org/10.4028/www.scientific.net/kem.347.77.

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A method for damage localisation has been developed, which is based on the phased array idea. Four arrays of transducers, instead of only one, are used to perform a beam-forming procedure. Each array consists of nine transducers placed along a line, which are able to excite and register elastic waves. The arrays are placed in such a way that the angular difference between them is 45º and the rotation point is the middle transducer, which is common for all the arrays. The idea has been tested on a square aluminium plate modelled by the Spectral Finite Element Method. Two types of damage were co

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Golovachev, Petro, Ivan Korobko, and Vitalii Krotevich. "INVESTIGATION OF THE UNCERTAINTY VALUE AT MEASURING THE TEMPERATURE OF THE COOLANT IN THE PIPELINES WITH OUTSIDE SURFACE MOUNTED TEMPERATURE SENSORS." Bulletin of Kyiv Polytechnic Institute. Series Instrument Making, no. 62(2) (December 24, 2021): 42–49. http://dx.doi.org/10.20535/1970.62(2).2021.249199.

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During performing technological and production processes and monitoring the modes of their operation, the problem of determining the temperature of various media transported through pipelines is solved without incut temperature sensors (TS) in them, i.e. with using outside surface mounted TS (SMTS). This method is allowing to measure mechanical values at technological processes without structure broken and without influence to physicochemical properties of measured media. Using of SMTS possible to register heat losses on sections of heating mains, pollution degree of pipelines internal w

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Smirnov, Andrey, Boris Zaitsev, Andrey Teplykh, et al. "The Experimental Registration of the Evanescent Acoustic Wave in YX LiNbO3 Plate." Sensors 21, no. 6 (2021): 2238. http://dx.doi.org/10.3390/s21062238.

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Evanescent acoustic waves are characterized by purely imaginary or complex wavenumbers. Earlier, in 2019 by using a three dimensional (3D) finite element method (FEM) the possibility of the excitation and registration of such waves in the piezoelectric plates was theoretically shown. In this paper the set of the acoustically isolated interdigital transducers (IDTs) with the different spatial periods for excitation and registration of the evanescent acoustic wave in Y-cut X-propagation direction of lithium niobate (LiNbO3) plate was specifically calculated and produced. As a result, the possibi

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Sosa, J., Juan A. Montiel-Nelson, R. Pulido, and Jose C. Garcia-Montesdeoca. "Design and Optimization of a Low Power Pressure Sensor for Wireless Biomedical Applications." Journal of Sensors 2015 (2015): 1–13. http://dx.doi.org/10.1155/2015/352036.

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A blood pressure sensor suitable for wireless biomedical applications is designed and optimized. State-of-the-art blood pressure sensors based on piezoresistive transducers in a full Wheatstone bridge configuration use low ohmic values because of relatively high sensitivity and low noise approach resulting in high power consumption. In this paper, the piezoresistance values are increased in order to reduce by one order of magnitude the power consumption in comparison with literature approaches. The microelectromechanical system (MEMS) pressure sensor, the mixed signal circuits signal condition

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Kumar Y, L. V. Santosh. "Design and Implementation of SAR-ADC for Medical Electronic Applications." International Journal of Advanced Research in Computer Science and Software Engineering 8, no. 5 (2018): 55. http://dx.doi.org/10.23956/ijarcsse.v8i5.665.

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in today’s advance electronic and communication systems the role of high accuracy analog to digital converters are of great importance. Nowadays, a larger percentage of mixed-signal applications requires for health care systems. Also the speed of the chosen ADC design matters a lot as we are connected with the real world signals. SAR based ADC will provides us a better solution for various analog to digital systems. It is an essential device whenever data from the analog world, through sensors or transducers, should be digitally processed or when transmitting data between chips through either

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Herickhoff, Carl D., Matthew R. Morgan, Joshua S. Broder, and Jeremy J. Dahl. "Low-cost Volumetric Ultrasound by Augmentation of 2D Systems: Design and Prototype." Ultrasonic Imaging 40, no. 1 (2017): 35–48. http://dx.doi.org/10.1177/0161734617718528.

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Conventional two-dimensional (2D) ultrasound imaging is a powerful diagnostic tool in the hands of an experienced user, yet 2D ultrasound remains clinically underutilized and inherently incomplete, with output being very operator dependent. Volumetric ultrasound systems can more fully capture a three-dimensional (3D) region of interest, but current 3D systems require specialized transducers, are prohibitively expensive for many clinical departments, and do not register image orientation with respect to the patient; these systems are designed to provide improved workflow rather than operator in

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13

Tyagunov, D. S., and A. F. Shestakov. "Recording of ultra-low frequency electromagnetic emission during loading of a rock sample." Izmeritel`naya Tekhnika, no. 7 (September 12, 2024): 52–59. http://dx.doi.org/10.32446/0368-1025it.2024-7-52-59.

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The review of publications devoted to the study and features of the registration of electromagnetic emission observed during the loading of samples of rocks, metals, composite materials in laboratory conditions, as well as in areas of disintegration of rock massifs at mining sites is given. Electromagnetic emission observed during the destruction of rock samples in laboratory experiments and field conditions can appear itself not only in the high and low frequency ranges (1000–3·106 Hz and 500–1000 Hz, respectively), but also in the very low and ultra-low frequency (200–500 Hz and 0.01–200.00

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Galindo-Castillo, Ronaldo, Santos Gabriel Campos-Magaña, Martín Cadena-Zapata, Alejandro Zermeño-González, Juan Antonio López-López, and Gilbert Fresh López-López. "Evaluación de un transductor integral para determinar la magnitud del error de medición." REVISTA TERRA LATINOAMERICANA 37, no. 4 (2019): 329. http://dx.doi.org/10.28940/terra.v37i4.466.

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The use of soil reaction force transducers coupled between the tractor and integral tillage implements are in their experimental phase in different parts of the world; however, these developments present measurement errors. The objective of this research was to corroborate the magnitude of error between an Integral Force Sensor (SIF) connected to the tractor three-point hitch and two individual sensors coupled to the work tools to monitor soil reaction forces at the integral implements. SIF was tested under laboratory conditions with calibrated equipment to register force measurements at diffe

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15

Neroev, V. V., T. N. Kiseleva, M. S. Zaytsev, A. V. Baeva, E. K. Eliseeva, and A. I. Ushakov. "A comparative analysis of biometric parameters of optic nerves obtained by ultrasonic sensors of varied frequencies." Russian Ophthalmological Journal 16, no. 4 (2023): 63–68. http://dx.doi.org/10.21516/2072-0076-2023-16-4-63-68.

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Purpose: a comparative analysis of biometric parameters of the optic nerve obtained by different diagnostic ultrasound sensors.Material and methods. We examined 20 healthy volunteers with emmetropia aged 20 to 40 years (40 eyes), average age 30.5 ± 5.4 years, who had no complaints or ophthalmic pathologies. Ultrasound scanning was performed on a multifunctional Voluson E8 (GE) scanner (11–18 MHz linear sensor), ophthalmic ultrasound device Ellex Eyecubed (a conventional 10 MHz transducer) and an ophthalmic scanner Absolu «Quantel Medical» (a 20 MHz transducer). All examinations were carried ou

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Zhitenev, A., I. Kurganov, V. Ignatchik, S. Sarkisov та P. Vinokurov. "Результаты экспериментальных исследований гидравлических ударов, возникающих при работе канализационных насосных станций". Vodosnabzhenie i sanitarnaia tehnika, № 11 (15 листопада 2019): 55–59. http://dx.doi.org/10.35776/mnp.2019.11.07.

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Представлены результаты исследований гидравлических ударов, возникающих при работе канализационных насосных станций. Исследования проведены на двух однотипных станциях СанктПетербурга. В настоящее время отсутствуют направленные на снижение интенсивности гидравлических ударов на канализационных насосных станциях практические рекомендации, включающие выбор места установки и типа обратных клапанов, сочетание их совместной работы с плавным пуском и т. п. Поэтому в СанктПетербурге проводится комплекс экспериментальных исследований, направленных на решение этой задачи. При проведении исследований пр

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17

OSADCHUK, Alexsandr, Jaroslav OSADCHUK, and Valentin SKOSCHUK. "MULTICHANNEL FREQUENCY METER ON A PROGRAMMABLE LOGICAL INTEGRATED CIRCUIT FOR A RADIOMEASURING SYSTEM WITH FREQUENCY SENSORS." Herald of Khmelnytskyi National University 303, no. 6 (2021): 186–94. http://dx.doi.org/10.31891/2307-5732-2021-303-6-186-194.

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The paper presents the development of a multi-channel frequency measurement system on FPGA by Altera Cyclone IV, the main task of which is to measure the informative parameter of sensors of physical quantities with frequency output. Based on the analysis of existing multi-channel frequency measurement systems on the FPGA, it is established that it is advisable to use multi-channel frequency meters for simultaneous measurement of several frequencies. Unlike several frequency meters operating simultaneously, multi-channel frequency meters perform measurements in a single time base, which is prov

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Третьяков, Evgeniy Tretyakov, Бритвин, et al. "Ship Hull Diagnostics with the Use of Remotely Operated Underwater Vehicle." NDT World 18, no. 3 (2015): 12–15. http://dx.doi.org/10.12737/12565.

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Introduction. Nowadays ship hull diagnostics is carried out in dry-dock or using divers in the road. The both technologies are time consuming, labour and material resource demanding. Specialists from Bauman Moscow State Technical University have developed a diagnostics system that allows the ship hull underwater part inspection to be performed without calling at dry-dock and without divers. The system includes the following main elements: remotely operated vehicle that contains diagnostics tools; hydro acoustic navigation system; software; and diagnostics technology. Method.

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Grzelak, Sławomir, Jarosław Czoków, Marcin Kowalski, and Marek Zieliński. "Ultrasonic Flow Measurement with High Resolution." Metrology and Measurement Systems 21, no. 2 (2014): 305–16. http://dx.doi.org/10.2478/mms-2014-0026.

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Abstract The ultrasonic flowmeter which is described in this paper, measures the transit of time of an ultrasonic pulse. This device consists of two ultrasonic transducers and a high resolution time interval measurement module. An ultrasonic transducer emits a characteristic wave packet (transmit mode). When the transducer is in receive mode, a characteristic wave packet is formed and it is connected to the time interval measurement module inputs. The time interval measurement module allows registration of transit time differences of a few pulses in the packet. In practice, during a single mea

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Pallarés-López, Víctor, Rafael Jesús Real-Calvo, Silvia del Rio Jiménez, Miguel González-Redondo, Isabel Moreno-García, and Isabel Santiago. "Monitoring of Energy Data with Seamless Temporal Accuracy Based on the Time-Sensitive Networking Standard and Enhanced µPMUs." Applied Sciences 11, no. 19 (2021): 9126. http://dx.doi.org/10.3390/app11199126.

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In the energy sector, distributed synchronism and a high degree of stability are necessary for all real-time monitoring and control systems. Instantaneous response to critical situations is essential for the integration of renewable energies. The most widely used standards for clock synchronisation, such as Network Time Protocol (NTP) and Precision Time Protocol (PTP), do not allow for achieving synchronised simultaneous sampling in distributed systems. In this work, a novel distributed synchronism system based on the Time-Sensitive Networking (TSN) standard has been validated for its integrat

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Malinowski, Pawel, Lukasz Skarbek, and Wieslaw Ostachowicz. "Application of Piezo Sensors in EMI and Guided Wave Techniques." Key Engineering Materials 569-570 (July 2013): 702–9. http://dx.doi.org/10.4028/www.scientific.net/kem.569-570.702.

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In reported research piezoelectric sensors were used for damage identicitaion purposes. Piezoelectric sensor was used for specimen excitation. Two techniques were investigated. The Electromechanical impedance (EMI) technique and guided wave based technique. The principle of EMI technique is based on measurement and analysis of impedance of piezoelectric transducers bonded on or embedded in investigated structure. It is assumed that structural change should influence the impedance characteristics of the transducers. The guided wave based technique is based on the guided elastic wave propagation

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Nedoseka, A. Ya, and S. A. Nedoseka. "Effect Of Characteristics Of Ae Transducer On Registered Wave Spectra." Техническая диагностика и неразрушающий контроль 2017, no. 4 (2017): 3–6. http://dx.doi.org/10.15407/tdnk2017.04.01.

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23

Wandowski, Tomasz, Pawel Malinowski, and Wiesław M. Ostachowicz. "Damage Localisation in Thin Panels Using Elastic Wave Propagation Method." Key Engineering Materials 413-414 (June 2009): 87–93. http://dx.doi.org/10.4028/www.scientific.net/kem.413-414.87.

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In this paper algorithm for damage localisation in thin panels made of aluminium alloy has been proposed. Mentioned algorithm uses Lamb wave propagation methods and geometrical approach for damage localisation. Elastic waves are generated and received using piezoelectric transducers. Excited elastic waves propagate and reflect from panel boundary and discontinuities existing in the panel. Wave reflection can be registered through the piezoelectric transducers and used in signal processing algorithm. Processing algorithm consists of two parts: signal filtering and extraction of damage location.

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Knitter-Piątkowska, Anna, and Arkadiusz Dobrzycki. "Application of Wavelet Transform to Damage Identification in the Steel Structure Elements." Applied Sciences 10, no. 22 (2020): 8198. http://dx.doi.org/10.3390/app10228198.

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This work concerns the concept and verification of the experimental possibility of using a wavelet transform to assess a steel structure’s condition. In the research, a developed measuring stand was used. Mechanical waves in the metal plate were excited by the impact. These waves were recorded with an electroacoustic transducer and registered in the form of electrical signals. Both the signals generated by the actuator of the plate and the signals reaching the transducer were recorded. The registered data were decomposed into wavelet coefficients. Laboratory tests have shown the possibility of

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Seryeznov, A. N., L. N. Stepanova, S. I. Kabanov, I. S. Kabanov, V. V. Chernova, and A. B. Kuznetsov. "ACOUSTIC EMISSION SIGNALS LOCATION IN DURALUMIN AND CARBON FIBER SAMPLES BY OPTICAL FIBER AND PIEZOELECTRIC TRANSDUCER SENSORS ANTENNA." Kontrol'. Diagnostika, no. 272 (February 2021): 18–29. http://dx.doi.org/10.14489/td.2021.02.pp.018-029.

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The issues are considered of acoustic emission (AE) signals location generated by various simulators (Su–Nielsen, electronic simulator, metal balls of various diameter from 0.5 to 1.5 mm, dropped from different heights). Signals generated by built-in electronic simulator with a frequency of 1 Hz location is analyzed performed by an antenna consisting of two Fabry–Perot fiber-optic sensors (FOS) and two piezoelectric transducers, mounted on samples made of duralumin and T800 carbon fiber. A carbon fiber reinforced plastic sample with the defined above antenna mounted was tested with a VEDS-10 v

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Balta, Horia, Catherine Douillard, and Alexandru Isar. "On the Equivalence Between Canonical Forms of Recursive Systematic Convolutional Transducers Based on Single Shift Registers." IEEE Access 2 (2014): 381–94. http://dx.doi.org/10.1109/access.2014.2316413.

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Ockenden, Eloise S., Sandrena Ruth Frischer, Huike Cheng, J. Alison Noble, and Goylette F. Chami. "The role of point-of-care ultrasound in the assessment of schistosomiasis-induced liver fibrosis: A systematic scoping review." PLOS Neglected Tropical Diseases 18, no. 3 (2024): e0012033. http://dx.doi.org/10.1371/journal.pntd.0012033.

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Background Abdominal ultrasound imaging is an important method for hepatic schistosomiasis diagnosis and staging. Several ultrasound staging systems have been proposed, each attempting to standardise schistosomal periportal fibrosis (PPF) diagnosis. This review aims to establish the role of ultrasound in the diagnosis and staging of schistosomal PPF, and to map the evolution of ultrasound staging systems over time, focusing on internal validation and external reproducibility. Methods A systematic search was undertaken on 21st December 2022 considering the following databases: PubMed/MEDLINE (1

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Fausto, Robert S., Dirk Van As, Andreas P. Ahlstrøm, and Michele Citterio. "Assessing the accuracy of Greenland ice sheet ice ablation measurements by pressure transducer." Journal of Glaciology 58, no. 212 (2012): 1144–50. http://dx.doi.org/10.3189/2012jog12j075.

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AbstractWe present a method of measuring ice ablation using an absolute pressure transducer as part of an automatic weather station (AWS) system, which we have installed in 17 locations on the Greenland ice sheet. The pressure transducer assembly is drilled into the ice, enclosed in a hose filled with antifreeze liquid. The pressure signal registered by the transducer is that of the vertical column of liquid over the sensor, which can be translated to depth, and ice ablation rate, knowing the density of the liquid. Measuring at sub-daily timescales, this assembly is well suited to monitoring i

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Malinowski, Pawel, Tomasz Wandowski, and Wieslaw Ostachowicz. "Guided Waves for Aircraft Panel Monitoring." Key Engineering Materials 558 (June 2013): 107–15. http://dx.doi.org/10.4028/www.scientific.net/kem.558.107.

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The reported research concerns experimental investigation toward the monitoring of an aircraft panel. Guided wave propagation phenomena were used to obtain information about the state of the monitored structure. A curved aluminium panel with rivets was investigated. Piezoelectric transducer was used to excite guided waves in chosen structural element. The generated signal was amplified before applying it to the transducer in order to ensure measurable amplitude of excited guided waves. Measurement of the wave field was realized using laser scanning vibrometer that registered the velocity respo

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Bryakin, I. V., and I. V. Bochkarev. "Vibration sensor for monitoring systems of construction elements of high-voltage power lines." Power engineering: research, equipment, technology 24, no. 4 (2022): 63–76. http://dx.doi.org/10.30724/1998-9903-2022-24-4-63-76.

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PURPOSE. To develop a differential parametric inductive transducer of vibration values into an electrical signal, which is a vibration displacement sensor (DV) with a new principle of operation. Theoretically substantiate the performance of the proposed DV. To develop a new system for vibroacoustic monitoring of the technical condition of overhead power transmission line (TL) supports using the proposed DV. METHODS. When solving this goal, the theory of parametric transducers and the main provisions of the theory of vibration diagnostics were used. RESULTS. The design feature of the developed

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Rucka, Magdalena. "Monitoring Steel Bolted Joints during a Monotonic Tensile Test Using Linear and Nonlinear Lamb Wave Methods: A Feasibility Study." Metals 8, no. 9 (2018): 683. http://dx.doi.org/10.3390/met8090683.

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The structural integrity of steel bolted joints may be compromised due to excessive loading. Therefore, condition assessment and the detection of potential defects before they cause a failure have become a major issue. The paper is focused on the condition monitoring of a bolted lap joint subjected to progressive degradation in a tensile test. The inspection used Lamb waves propagated through the overlap area. Wave propagation signals were registered automatically by means of piezoelectric transducers. Two damage indices were defined based on linear and nonlinear features of Lamb waves. The us

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MARQUET, FABRICE, YAO-SHENG TUNG, and ELISA E. KONOFAGOU. "FEASIBILITY STUDY OF A CLINICAL BLOOD–BRAIN BARRIER OPENING ULTRASOUND SYSTEM." Nano LIFE 01, no. 03n04 (2010): 309–22. http://dx.doi.org/10.1142/s1793984410000286.

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In this paper, we investigate the focalization properties of single-element transducers at intermediate frequencies (500 kHz) through primate and human skulls. The study addresses the transcranial targeting involved in ultrasound-induced blood–brain barrier (BBB) opening with clinically relevant targets such as the hippocampus and the basal ganglia, which are typically affected by early Alzheimer's and Parkinson's disease, respectively. The targeted brain structures were extracted from three-dimensional (3D) brain atlases registered with the skulls and used to virtually position and orient the

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Vakulin, Aleksandr A., and Sergey G. Montanari. "Heat metering transducer, satisfying the concept of “subversive” innovation." Tyumen State University Herald. Physical and Mathematical Modeling. Oil, Gas, Energy 10, no. 4 (2024): 34–49. https://doi.org/10.21684/2411-7978-2024-10-4-34-49.

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Creating flow meters within the concept of “subversive” innovation is an urgent task for Russia. In accordance with this concept, the generated flowmeter must meet the minimum requirements acceptable to customers, contained in the relevant regulatory documents. This article presents the results of an experimental study on a possible option of a measuring converter of a heat flow meter. A distinctive feature of the measuring converter is the use of a heater in contact with a single temperature sensor. The research was carried out at the installation, assembled at the Department of Applied and T

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Johnson, Laura A., Richard A. Morgan, Mark E. Dudley, et al. "Gene therapy with human and mouse T-cell receptors mediates cancer regression and targets normal tissues expressing cognate antigen." Blood 114, no. 3 (2009): 535–46. http://dx.doi.org/10.1182/blood-2009-03-211714.

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Abstract Gene therapy of human cancer using genetically engineered lymphocytes is dependent on the identification of highly reactive T-cell receptors (TCRs) with antitumor activity. We immunized transgenic mice and also conducted high-throughput screening of human lymphocytes to generate TCRs highly reactive to melanoma/melanocyte antigens. Genes encoding these TCRs were engineered into retroviral vectors and used to transduce autologous peripheral lymphocytes administered to 36 patients with metastatic melanoma. Transduced patient lymphocytes were CD45RA− and CD45RO+ after ex vivo expansion.

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Gomes, Matheus K., Willian H. A. da Silva, Antonio Ribas Neto, Julio Fajardo, Eric Rohmer, and Eric Fujiwara. "Detection of Hand Poses with a Single-Channel Optical Fiber Force Myography Sensor: A Proof-of-Concept Study." Automation 3, no. 4 (2022): 622–32. http://dx.doi.org/10.3390/automation3040031.

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Force myography (FMG) detects hand gestures based on muscular contractions, featuring as an alternative to surface electromyography. However, typical FMG systems rely on spatially-distributed arrays of force-sensing resistors to resolve ambiguities. The aim of this proof-of-concept study is to develop a method for identifying hand poses from the static and dynamic components of FMG waveforms based on a compact, single-channel optical fiber sensor. As the user performs a gesture, a micro-bending transducer positioned on the belly of the forearm muscles registers the dynamic optical signals resu

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A. Wahab, Abdul Kareem, Khudheyer S. Mushatet, and Wissam H. Ajeel. "Experimental and Computational Investigation of Dynamics Effects in a High Speed Centrifugal Pump." University of Thi-Qar Journal for Engineering Sciences 4, no. 1 (2013): 25–46. http://dx.doi.org/10.31663/utjes.v4i1.170.

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Experimental and numerical investigation of a high speed centrifugal pump has been carried out. In experimental work, a test rig which includes a centrifugal pump, fast response piezoelectric pressure transducers, Rota meter flow and measurement instrumentations is designed and constructed. Two impellers having different outlet diameters were examined for the same volute. A data acquisition system (hardware) and its software (Visual Basic language) have been developed to analyze the pressure transducer signal in order to obtain the pressure fluctuations. The governing partial differential equa

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Guo, Heng, Weizhi Qi, Ming He, Jian Rong, and Lei Xi. "Co-registered photoacoustic and ultrasound imaging for tongue cancer detection." Journal of Innovative Optical Health Sciences 11, no. 03 (2018): 1850008. http://dx.doi.org/10.1142/s1793545818500086.

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Tongue cancer is an increasingly common disease with high morbidity. Besides clinical observation, biomedical imaging techniques have been investigated for early detection of tongue cancer. In this paper, we proposed a co-registered dual-modality photoacoustic (PA) and ultrasound imaging technique to simultaneously map the functional and structural information of human tongue, which has the potential to detect and diagnose tongue cancer in early stage. The imaging probe comprises a 20-MHz side-view focused transducer for ultrasound imaging and PA detection, a light path constructed by a multim

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Golinelli, N., A. Spaggiari, D. Castagnetti, et al. "Development of a driveshaft torque transducer for low-cost structural health monitoring of off-highway vehicles." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 233, no. 4 (2016): 714–20. http://dx.doi.org/10.1177/1464420716669966.

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Mechatronic agricultural machines and equipment are continuously increasing their complexity and cost. In order to ensure their efficiency and reliability and preserve their value, it is important to actively monitor the working loads and register damaging and wear occurring on critical components. This approach needs the introduction of sensors on the machine, which allow continuous monitoring and evaluate the residual life of components. The work presents the development and testing of an innovative low-cost systems for monitoring and diagnostic of off-highway vehicles. The sensor measures t

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Dorji, Jambay, Tandin Zangmo, Tashi Yangdol, Srijana Gajmer, and Karma Kelzang Eudon. "Automatic Meter Reading and Energy Data Extraction of Multifunction Transducer using GSM." Zorig Melong | A Technical Journal of Science, Engineering and Technology 2, no. 1 (2015): 101–6. https://doi.org/10.17102/zmv2.i1.017.

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This paper presents two systems: the automation of energy meter reading based on GSM and the data extraction from a multifunction transducer (MFT). A model based on the automated energy meter reading system for billing purposes using a multifunction transducer is designed. For the automation of the energy meter reading system, the energy consumption of electrical utility is read by an energy meter and calculates the cost of the consumed energy. The data is sent via GSM, which makes it possible to extract the data from the MFT and then transmit it wirelessly. The MFT can read up to 48 different

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Balachandran, Anoop T., Samuel T. Orange, Yipeng Wang, Renee Lustin, Andy Vega, and Norberto Quiles. "Comparison of two popular transducers to measure sit-to-stand power in older adults." PLOS ONE 19, no. 8 (2024): e0308808. http://dx.doi.org/10.1371/journal.pone.0308808.

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The Tendo Unit (TU) and GymAware (GA) are the two most frequently used linear transducers for assessing muscle power in older adults via the sit-to-stand (STS) test. Unlike TU, GA incorporates a sensor mechanism to correct for non-vertical movements, which may lead to systematic differences between devices. The aim of this study therefore was to compare GA to TU for measuring STS power in community-dwelling older adults. Community-dwelling adults (n = 51, aged ≥65 years, 61% female) completed a single chair stand, with peak power measured simultaneously using GA and TU. Participants also compl

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Rudenko, Natalia, Ksenia Fursova, Anna Shepelyakovskaya, Anna Karatovskaya, and Fedor Brovko. "Antibodies as Biosensors’ Key Components: State-of-the-Art in Russia 2020–2021." Sensors 21, no. 22 (2021): 7614. http://dx.doi.org/10.3390/s21227614.

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The recognition of biomolecules is crucial in key areas such as the timely diagnosis of somatic and infectious diseases, food quality control, and environmental monitoring. This determines the need to develop highly sensitive display devices based on the achievements of modern science and technology, characterized by high selectivity, high speed, low cost, availability, and small size. Such requirements are met by biosensor systems—devices for reagent-free analysis of compounds that consist of a biologically sensitive element (receptor), a transducer, and a working solution. The diversity of b

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Kochenderfer, James N., Mark E. Dudley, Steven A. Feldman, et al. "B-cell depletion and remissions of malignancy along with cytokine-associated toxicity in a clinical trial of anti-CD19 chimeric-antigen-receptor–transduced T cells." Blood 119, no. 12 (2012): 2709–20. http://dx.doi.org/10.1182/blood-2011-10-384388.

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Abstract We conducted a clinical trial to assess adoptive transfer of T cells genetically modified to express an anti-CD19 chimeric Ag receptor (CAR). Our clinical protocol consisted of chemotherapy followed by an infusion of anti–CD19-CAR–transduced T cells and a course of IL-2. Six of the 8 patients treated on our protocol obtained remissions of their advanced, progressive B-cell malignancies. Four of the 8 patients treated on the protocol had long-term depletion of normal polyclonal CD19+ B-lineage cells. Cells containing the anti-CD19 CAR gene were detected in the blood of all patients. Fo

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Balasubramaniam, Kaleeswaran, Shirsendu Sikdar, Piotr Fiborek, and Pawel H. Malinowski. "Ultrasonic Guided Wave Signal Based Nondestructive Testing of a Bonded Composite Structure Using Piezoelectric Transducers." Signals 2, no. 1 (2021): 13–24. http://dx.doi.org/10.3390/signals2010002.

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This paper presents ultrasonic guided wave (UGW) propagation-based nondestructive testing (NDT) of an adhesively bonded composite structure (ACS). In the process, a series of scanning laser Doppler vibrometry (SLDV)-based laboratory experiments and time-domain spectral element method (SEM)-based numerical simulations were carried out on an ACS with barely visible impact damage (BVID) and a hole. A good agreement was observed between the numerical and experimental UGW signals in the cases studied. Finally, a full-field and elliptical signal processing method-based NDT strategy was proposed that

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Zhang, Yuchao, Bin Miao, Guanghua Wang, et al. "ScAlN Film-Based Piezoelectric Micromechanical Ultrasonic Transducers with Dual-Ring Structure for Distance Sensing." Micromachines 14, no. 3 (2023): 516. http://dx.doi.org/10.3390/mi14030516.

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Piezoelectric micromechanical ultrasonic transducers (pMUTs) are new types of distance sensors with great potential for applications in automotive, unmanned aerial vehicle, robotics, and smart homes. However, previously reported pMUTs are limited by a short sensing distance due to lower output sound pressure. In this work, a pMUT with a special dual-ring structure based on scandium-doped aluminum nitride (ScAlN) is proposed. The combination of a dual-ring structure with pinned boundary conditions and a high piezoelectric performance ScAlN film allows the pMUT to achieve a large dynamic displac

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Sikorski, Wojciech. "Active Dielectric Window: A New Concept of Combined Acoustic Emission and Electromagnetic Partial Discharge Detector for Power Transformers." Energies 12, no. 1 (2018): 115. http://dx.doi.org/10.3390/en12010115.

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The detection and location of partial discharge (PD) is of great significance in evaluating the insulation condition of power transformers. This paper presents an active dielectric window (ADW), which is a new concept of combined acoustic emission (AE) and electromagnetic PD detector intended for assembly in a transformer’s inspection hatch. The novelty of this design lies in the fact that all structural components of an ultrasonic transducer, i.e., the matching and backing layer, an active piezoelectric element with electrodes, and electrical leads, were built into a dielectric window. Due to

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Łutowicz, Marek, and Dominika Cuper-Przybylska. "Influence of the Instantaneous Angular Speed (IAS) of Marine Diesel Engine on its Indication Results." Solid State Phenomena 236 (July 2015): 204–11. http://dx.doi.org/10.4028/www.scientific.net/ssp.236.204.

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The paper presents a method of transforming the time axis to the axis of the crank angle rotation based on the pressure measured in time domain and simplified model of the engine dynamics. Indicating is to register the pressure in synchronism with the engine crank angle rotation. Usually in the ad hoc measurements the crankshaft rotation angle transducer is avoided, and the measurements are performed in time domain. For further analysis time axis is transformed for crank angle axis on the base of linear transform. Pressure waveforms obtained during the research were subject of the described tr

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Ostachowicz, Wiesław M., Arkadiusz Zak, Pawel Malinowski, and Tomasz Wandowski. "Control of Properties of Composite Structures with the Use of Multi-Functional Materials." Advances in Science and Technology 56 (September 2008): 324–33. http://dx.doi.org/10.4028/www.scientific.net/ast.56.324.

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This work is focused on two major applications of multi–functional materials. In the first one the use of piezoelectric transducers have been studied in order to monitor the health of composite plate–like structures. These transducers can act as signal sources and sensors for guided elastic waves in inspected structures. The excited waves propagating in the material can reflect from various discontinuities such like: boundaries, notches, cracks and delamination. In the next step the time responses registered by the sensors, as inputs for a signal processing algorithm, may be processed to corre

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Dyankov, Georgi, Petia Genova-Kalou, Tinko Eftimov, et al. "Binding of SARS-CoV-2 Structural Proteins to Hemoglobin and Myoglobin Studied by SPR and DR LPG." Sensors 23, no. 6 (2023): 3346. http://dx.doi.org/10.3390/s23063346.

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One of the first clinical observations related to COVID-19 identified hematological dysfunctions. These were explained by theoretical modeling, which predicted that motifs from SARS-CoV-2 structural proteins could bind to porphyrin. At present, there is very little experimental data that could provide reliable information about possible interactions. The surface plasmon resonance (SPR) method and double resonance long period grating (DR LPG) were used to identify the binding of S/N protein and the receptor bind domain (RBD) to hemoglobin (Hb) and myoglobin (Mb). SPR transducers were functional

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Yamane, Akio, Taketoshi Iyota, Yongwoon Choi, Yuzuru Kubota, and Kazuhiro Watanabe. "A Study on Propagation Characteristics of Spread Spectrum Sound Waves Using a Band-Limited Ultrasonic Transducer." Journal of Robotics and Mechatronics 16, no. 3 (2004): 333–41. http://dx.doi.org/10.20965/jrm.2004.p0333.

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Propagation characteristics and range experiments of spread spectrum 40kHz ultrasonic waves have been explored under band-limited frequency. Comparative experiments were conducted using two arrangements combining a broadband speaker and a microphone for the broadband case, and an all-purpose receiving transducer and the broadband speaker for the band-limited case. Under the broadband condition, range accuracy measurements and evaluation of signal discrimination in a code division multiple transmission were made demonstrating 0.034% (corresponding to about 7mm in range distance) of range accura

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Bartling, C., and J. Schmitz. "Reaction to disturbances of a walking leg during stance." Journal of Experimental Biology 203, no. 7 (2000): 1211–23. http://dx.doi.org/10.1242/jeb.203.7.1211.

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The ground reaction forces exerted by the legs of freely walking stick insects, Carausius morosus, were recorded during normal and perturbed locomotion. The animals walked along a path into which a three-dimensional force transducer was integrated. The transducer registered all three components of the forces produced by a single leg when, by chance, it walked on the force platform. The stiffness of the walking surface was found to be a critical variable affecting the forces and the trajectories of leg movements during undisturbed walking. The forces produced by a leg were considerably smaller

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