Results 21 to 30 of about 2,710 (218)

Gold-Diaphragm Based Fabry-Perot Ultrasonic Sensor for Partial Discharge Detection and Localization

IEEE Photonics Journal, 2020
Acoustic measurement is the most widely used non-electric method to detect partial discharge (PD) signals by detect the ultrasonic waves arisen from partial discharge.
Wei Zhang, Ping Lu, Wenjun Ni, Wanze Xiong, Deming Liu, Jiangshan Zhang   +5 more
doaj   +1 more source

Propagation Laws of Ultrasonic Continuous Signals at the Transmitting Transducer–Soil Interface

Agriculture
Ultrasonic detection is one of the main methods for information detection and has advantages in soil detection. Ultrasonic signals attenuate in soil, resulting in unique propagation laws.
Zhinan Wang, Caiyun Lu, Hongwen Li, Chao Wang, Longbao Wang, Hanyu Yang   +5 more
doaj   +1 more source

Nondestructive testing method of SiCp particle dispersion in SiCp/AZ91D magnesium matrix composites

Cailiao gongcheng, 2023
SiCp/AZ91D magnesium matrix composites are widely used in the aerospace field, but there is less report on the distribution of SiCp particles in SiCp/AZ91D magnesium matrix composites by ultrasonic testing methods at home and abroad.
HU Ke, YAO Junping, LU Minghui, CHENG Shuyun, DONG Xingyu   +4 more
doaj   +1 more source

Automated Identification and Localization of Rail Internal Defects Based on Object Detection Networks

Applied Sciences
The timely identification of rail internal defects and the application of corresponding preventive measures would greatly reduce catastrophic failures, such as rail breakage.
Sicheng Wang, Bin Yan, Xinyue Xu, Weidong Wang, Jun Peng, Yuzhe Zhang, Xiao Wei, Wenbo Hu   +7 more
doaj   +1 more source

Numerically Trained Ultrasound AI for Monitoring Tool Degradation

Advanced Intelligent Systems, 2022
Monitoring tool degradation during manufacturing can ensure product accuracy and reliability. However, due to variations in degradation conditions and complexity in signal analysis, effective and broadly applicable monitoring is still challenging to ...
Yuqi Jin, Xinyue Wang, Edward A. Fox, Zhiwu Xie, Arup Neogi, Rajiv S. Mishra, Tianhao Wang   +6 more
doaj   +1 more source

Ultrasonic detection of parathyroid adenomas

The British Journal of Radiology, 1991
Abstract High-resolution real time sonography was used to evaluate patients with suspected primary hyperparathyroidism. A total of 12 consecutive patients was scanned pre-operatively. The sensitivity of the procedure was 92% and the specificity 97%. In our hospital sonography is the procedure of choice for localizing enlarged parathyroid
J, Murchison, C, McIntosh, A G, Aitken, J, Logie, A, Munro   +4 more
openaire   +2 more sources

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

Sparse Blind Deconvolution with Nonconvex Optimization for Ultrasonic NDT Application

Sensors, 2020
In the field of ultrasonic nondestructive testing (NDT), robust and accurate detection of defects is a challenging task because of the attenuation and noising of the ultrasonic wave from the structure.
Xuyang Gao, Yibing Shi, Kai Du, Qi Zhu, Wei Zhang   +4 more
doaj   +1 more source

Laser ultrasonic detection method and test for inner surface cracks of X80 pipelines

You-qi chuyun, 2021
As X80 pipelines are applied in large scale, the safety of long-term service of long-distance oil and gas pipelines has attracted much attention. In order to solve the problem of detecting the inner surface crack defects of pipelines, experimental ...
Jian-shu CAO, Bao-ping JI, Wei-ke JI
doaj   +1 more source

Are Fertility Preservation Procedures Before Gonadotoxic Therapy and Hematopoietic Stem Cell Transplantation Feasible and Safe in Very Young Children? A Retrospective Cohort Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Fertility preservation (FP) is increasingly integrated into the care of pediatric patients exposed to gonadotoxic therapy or conditioning for hematopoietic stem cell transplantation (HSCT), yet perioperative data in infants and toddlers remain scarce.
Kerstin Saalabian, Yannick Braun, Till‐Martin Theilen, Anke Barnbrock, Theresa Rohm, Fabienne Hammant, Nicole Sänger, Aynura Abbasova‐Semiz, Jan‐Henning Klusmann, Thomas Klingebiel, Udo Rolle, Peter Bader, Henning C. Fiegel, Andrea Jarisch   +13 more
wiley   +1 more source