Results 21 to 30 of about 223,632 (269)

The Sensitive Element of Acoustic Sensor on Circular Polarized Waves: From Theoretical Considerations towards Perspective Rotation Rate Sensors Design

Sensors, 2020
In this paper, the perspectives of using the features of acoustic wave propagation to design rotation rate sensors (RRS) are discussed. The possibility of developing the solid-state sensitive elements (SE) of RRS on acoustic waves of circular ...
Michail Shevelko, Andrey Lutovinov, Aleksandr Peregudov, Ekaterina Popkova, Yasemin Durukan, Sergey Shevchenko   +5 more
doaj   +1 more source

Sonographic features of agenesis of dorsal pancreas

Indian Journal of Radiology and Imaging, 2013
Agenesis of dorsal pancreas is an extremely rare congenital anomaly that occurs due to failure of the dorsal pancreatic bud to form the body and tail of the pancreas. We report the sonographic appearance of this condition in six cases.
Boopathy Vijayaraghavan S, Swapna Gouru, Sathiya Senthil   +2 more
doaj   +1 more source

Increasing the speed of automated ultrasonic inspection of as-built additive manufacturing components by the adoption of virtual source aperture

Materials & Design, 2022
Wire + Arc Additive Manufacture (WAAM) is an economical manufacturing technique to build components. To maintain the commercial and technical benefits, inspection is desired at each layer of the build. New conformable phased array roller-probes offer the
Rastislav Zimermann, Ehsan Mohseni, Randika K.W. Vithanage, David Lines, Euan Foster, Charles N. Macleod, Stephen Gareth Pierce, Gianrocco Marinelli, Stewart Williams, Jialuo Ding   +9 more
doaj   +1 more source

Smartphone-Based Acoustic Sensing for Breathing and Heartbeat Detection via AoA Clustering in Indoor Environments

Sensors
Smartphones incorporate acoustic components, including a speaker and multiple microphones, which can be used as a low-cost, contactless platform for vital signs monitoring.
Kounkou Vincent, Ijaz Khan, Ke Sun, Yizhi Shao, Zhantu Liang, Asif Ullah, Tao Gong   +6 more
doaj   +1 more source

Ultra-broad low-frequency forbidden bands in 1D solid–fluid acoustic superlattices with multiple solid constituents

AIP Advances, 2023
In this paper, a theoretical model of underwater acoustic wave propagation, based on the transfer matrix method, is employed to calculate acoustic wave transmission through a 1D solid–fluid superlattice (SFSL) with multiple solid constituents.
Sai Zhang, Huizi He, Baiqiang Xu, Wei Lu
doaj   +1 more source

Sound touch elastography of Achilles tendons in patients with type 2 diabetes mellitus versus healthy adults

Diabetology & Metabolic Syndrome, 2023
Background The studies of the effect of diabetes on the stiffness of Achilles tendon (AT) tissue remain inconclusive, we believe it is necessary to find a reliable method which can be used to detect the stiffness changes of the AT in the diabetic state ...
Xinxin Huang, Xingyu Chen, Xiu Chen, Ping Chi, Pengfei Wang, Xiaomei Zhan, Chunpeng Zou, Liang Wang, Yanyan Dong   +8 more
doaj   +1 more source

Deep Learning-Based Geometric Optimization of CMUT Phononic Crystals for SAW Control

Applied Sciences
Capacitive micromechanical ultrasonic transducers (CMUTs), as microelectromechanical systems (MEMS) devices, have broad application prospects in ultrasonic imaging and sensing.
Gang Chen, Huizi He, Chenguang Xu, Guidong Xu, Sai Zhang   +4 more
doaj   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen, Calogero Virgone, Antje Redlich, Michael Abele, Ricardo Lopez‐Almaraz, Tal Ben‐Ami, Ewa Bien, Gianni Bisogno, Maja Mazic Cesen, Andrea Ferrari, Malgorzata A. Krawczyk, Yves Reguerre, Dominik T. Schneider, Ines B. Brecht, Charlotte Rigaud, Bilgehan Yalcin, Rainer Claus, Christian Vokuhl, Constantin Lapa, Jörg Fuchs, Segolene Hescot, Thomas Walter, Julien Hadoux, Daniel Orbach   +23 more
wiley   +1 more source

The Correlation between Lung Ultrasound and Pathology in Rat Model of Monocrotaline-Induced Pulmonary Hypertension

Canadian Respiratory Journal
Pulmonary hypertension (PH) is a progressive and complex pulmonary vascular disease with poor prognosis. The aim of this study was to provide a new understanding of the lung pathology of disease and a noninvasive method in monitoring the establishment of
Yan-Fen Zhong, Bin-Bin Liang, Xiao-Feng Zhang, null Ji-Wu   +3 more
doaj   +1 more source

Non-Contact Laser Ultrasound Detection of Internal Gas Defects in Lithium-Ion Batteries

Sensors
Non-contact laser ultrasonic detection technology provides an innovative solution for evaluating the internal conditions of lithium-ion batteries (LIBs), offering significant advantages in gas defect assessment and structural defect identification.
Dongxia Tang, Chenguang Xu, Guidong Xu, Sen Cui, Sai Zhang   +4 more
doaj   +1 more source