Results 101 to 110 of about 232,569 (291)

Matched Filter for Acoustic Emission Monitoring in Noisy Environments: Application to Wire Break Detection

Acoustics
Regular inspections of important civil infrastructures are mandatory to ensure structural safety and reliability. Until today, these inspections are primarily conducted manually, which has several deficiencies.
Alexander Lange, Ronghua Xu, Max Kaeding, Steffen Marx, Joern Ostermann   +4 more
doaj   +1 more source

Application of EMD Technology in Leakage Acoustic Characteristic Extraction of Gas-Liquid, Two-Phase Flow Pipelines

Shock and Vibration, 2018
Nowadays, the exploitation and transportation of marine oil and gas are mainly achieved using multiphase flow pipelines. Leakage detection of multiphase flow pipelines has always been the most difficult problem regarding the pipeline safety.
Jian Ji, Yuxing Li, Cuiwei Liu, Dongxu Wang, Huafei Jing   +4 more
doaj   +1 more source

Bioprinting Organs—Science or Fiction?—A Review From Students to Students

Advanced Healthcare Materials, EarlyView.
Bioprinting artificial organs has the potential to revolutionize the medical field. This is a comprehensive review of the bioprinting workflow delving into the latest advancements in bioinks, materials and bioprinting techniques, exploring the critical stages of tissue maturation and functionality.
Nicoletta Murenu, Camilla Mussoni, Mateo S. Andrade Mier, Paula Buettner, Nathaly Chicaiza‐Cabezas, Yi‐Yu Robin Dai, Jessica Faber, Maren Fiedler, Zan Lamberger, Xuen Jen Ng, Vanessa Moessler, Anna Rederer, Jonas Roeder, Sabrina Stecher, Katinka Theis, Jeanette Weigelt, Silvia Budday, Gregor Lang, Natascha Schaefer   +18 more
wiley   +1 more source

An Improved Cohen‐Class Based Extraction Method for Fine Spectral Feature of Line Spectrum From Ship‐Radiated Noise

IET Radar, Sonar & Navigation
The line spectrum from ship‐radiated noise is a critical feature for passive sonar to detect underwater acoustic targets. However, due to weak target strength as well as severe propagation attenuation and oceanic ambient noise, the signals received by ...
Zhe Li, Weiguo Dai, Qijun Liu, Yichuan Wang, Shilin Sun   +4 more
doaj   +1 more source

Understanding the Effects of Conductive Polymer Electrode Coating on Recorded Neural Signals

Advanced Healthcare Materials, EarlyView.
Conductive polymer coatings are widely explored to improve the quality of signals recorded with chronically implanted neural electrodes, offering enhanced biocompatibility along with reduced electrode impedance. Combining computational modelling and data from PEDOT:PTS coated and PtIr electrodes in rats, we show that improvements in signal quality with
Karthik Sridhar, Judith Evers, Alexandre Trotier, Manus Biggs, Madeleine M. Lowery   +4 more
wiley   +1 more source

Smart Catheters for Diagnosis, Monitoring, and Therapy

Advanced Healthcare Materials, EarlyView.
This study presents a comprehensive review of smart catheters, an emerging class of medical devices that integrate embedded sensors, robotics, and communication systems, offering increased functionality and complexity to enable real‐time health monitoring, diagnostics, and treatment. Abstract This review explores smart catheters as an emerging class of
Azra Yaprak Tarman, Samiha Ahmed, Majed Othman Althumayri, Megan Guy, Darlenne Chavez Lugo, Frances S. Ligler, George T. Ligler, Rahmi Oklu, Hiroshi Kawahira, Michael J. McShane, Jun Kameoka, Jonathan Bova, Hatice Ceylan Koydemir   +12 more
wiley   +1 more source

Signal processing methodologies for an acoustic fetal heart rate monitor [PDF]

Research and development is presented of real time signal processing methodologies for the detection of fetal heart tones within a noise-contaminated signal from a passive acoustic sensor.
Pretlow, Robert A., III, Stoughton, John W.   +1 more
core   +1 more source

Real‐Time 3D Ultrasound Imaging with an Ultra‐Sparse, Low Power Architecture

Advanced Healthcare Materials, EarlyView.
This article presents a novel, ultra‐sparse ultrasound architecture that paves the way for wearable real‐time 3D imaging. By integrating a unique convolutional array with chirped data acquisition, the system achieves high‐resolution volumetric scans at a fraction of the power and hardware complexity.
Colin Marcus, Md Osman Goni Nayeem, Aastha Shah, Jason Hou, Shrihari Viswanath, Maya Eusebio, David Sadat, Anantha P. Chandrakasan, Tolga Ozmen, Canan Dagdeviren   +9 more
wiley   +1 more source

ALGORITHM OF UNMANNED AERIAL VEHICLES ACOUSTIC SIGNALS DETECTION BASED ON ANALYSIS OF FRACTAL DIMENSION

Sučasnì Informacìjnì Tehnologìï u Sferì Bezpeki ta Oboroni, 2018
In this paper the statistical characteristics of the fractal dimension (FD) of acoustic signals of unmanned aerial vehicles (UAV), broadband noise and wind noise are analyzed.
Leonid M. Artushin, Mykola V. Buhaiov
doaj  

Cavitating vortex characterization based on acoustic signal detection

IOP Conference Series: Earth and Environmental Science, 2016
In hydraulic turbines operating at part loads, a cavitating vortex structure appears at runner outlet. This helical vortex, called vortex rope, can be cavitating in its core if the local pressure is lower that the vaporization pressure. An actual concern is the detection of the cavitation apparition and the characterization of its level.
Digulescu, Angela, Murgan, I., Candel, I., Bunea, F., Ciocan, G., Bucur, D.M., Dunca, G., Ioana, Cornel, Vasile, Gabriel, Serbanescu, A.   +9 more
openaire   +2 more sources