Results 81 to 90 of about 105,270 (315)

A Defect Detection Method for the Surface of Metal Materials Based on an Adaptive Ultrasound Pulse Excitation Device and Infrared Thermal Imaging Technology

Complexity, 2021
Ultrasonic excitation has been widely used in the detection of microcracks on metal surfaces, but there are problems such as poor excitation effect of ultrasonic pulse, long time to reach the best excitation, and difficult to find microcracks.
Yibo Ai, Yingjie Zhang, Xingzhao Cao, Weidong Zhang   +3 more
doaj   +1 more source

Developmental and Epileptic Encephalopathy due to Biallelic Pathogenic Variants in PIGM

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective PIGM encodes a critical enzyme in the glycosylphosphatidylinositol (GPI)‐anchor biosynthesis pathway. While promoter‐region mutations in PIGM have been associated with a relatively mild phenotype characterized by portal vein thrombosis and absence seizures, recent evidence suggests that coding‐region mutations result in a more severe
Júlia Sala‐Coromina, Anna Marcé‐Grau, Barbara Masotto, Marta Codina, Lamia BenJemaa, Yasmina Elaribi, Mónica Martinez‐Gallo, Roger Colobran, Angel Sanchez‐Montañez, Irene Valenzuela, Yoshiko Murakami, Alfons Macaya   +11 more
wiley   +1 more source

Novel hydrophilic polymer couplant for application in ultrasonic non destructive testing [PDF]

, 2001
Ultrasonic Non Destructive Testing (NDT) is used to inspect materials and structures for defects. Water is commonly used in NDT as a couplant to improve ultrasonic transfer between an interrogating probe and test piece.
Bourne, S.J., Bourne, Simon James
core  

Research on Optical Fiber Sensor Localization Based on the Partial Discharge Ultrasonic Characteristics in Long-Distance XLPE Cables

IEEE Access, 2020
To improve the safety and antielectromagnetic interference performance of partial discharge detection in high-voltage DC cables, partial discharge of cables is used as a criterion for characterizing insulation defects.
Zhiheng Liu, Xiuling Liu, Zhaoyan Zhang, Wenna Zhang, Jianquan Yao   +4 more
doaj   +1 more source

Early Clinical, Imaging, and Pathological Characteristics of SRPK3/TTN‐Digenic Myopathy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective SRPK3/TTN‐digenic myopathy was recently established as a skeletal muscle myopathy caused by digenic inheritance. This study characterizes the early clinical presentation of SRPK3/TTN‐digenic myopathy in one previously reported and seven newly identified pediatric patients.
Rotem Orbach, Sandra Donkervoort, Carola Hedberg‐Oldfors, Giovanni Baranello, Dimah Saade, Precilla D'Souza, Ruchee Patel, Eva Michael, A. Reghan Foley, Diana Bharucha‐Goebel, S. Jin Haugland, Meghan McAnally, Omer Abdul Hamid, Katherine Chao, Ellen F. Macnamara, Alan H. Beggs, Anna Sarkozy, Juliane Mueller, Steven A. Moore, Richard S. Finkel, Cynthia J. Tifft, Francesco Muntoni, Anders Oldfors, Carsten G. Bönnemann   +23 more
wiley   +1 more source

Real-time digital signal processing system for normal probe diffraction technique [PDF]

, 2006
Ultrasonic systems are widely used in many fields of non-destructive testing. The increasing requirement for high quality steel product stirs the improvement of both ultrasonic instruments and testing methods.
Zhang, Lei
core  

Non-contact ultrasonic detection of angled surface defects [PDF]

, 2011
Non-destructive testing is an important technique, and improvements are constantly needed. Surface defects in metals are not necessarily confined to orientations normal to the sample surface; however, much of the previous work investigating the ...
A.R. Clough, R.S. Edwards, Edwards, R. S. (Rachel S.), M.H. Rosli, Rosli, M. H., B. Dutton, Clough, A. R., Dutton, B. (Ben)   +7 more
core   +1 more source

The ultrasonic detection of incompetent perforating veins

Journal of British Surgery, 1974
Abstract Of the methods of detecting incompetent perforators in current use, only two, clinical and ultrasouna, are easily performed and lend themselves to routine use in the ward or outpatients' department. The ultrasound method has a higher degree of accuracy than the clinical method, requires little in the way of additinal equipment ...
S S, Miller, A V, Foote
openaire   +2 more sources

Neurovascular Contacts in the Pathophysiology of Neuralgic Amyotrophy: An Observational Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Neuralgic amyotrophy (NA) is a prevalent, monophasic, multifocal immune‐mediated neuropathy. A distinctive characteristic of the disease is the occurrence of nerve or fascicle constrictions and torsions (NA‐associated focal nerve lesions, NAFL). The pathophysiology underlying this phenomenon remains to be fully elucidated.
Johannes Fabian Holle, Andreas Leha, Volker Limmroth, Wolfram Windisch, Maximilian Zimmermann   +4 more
wiley   +1 more source

Development of an Ultrasonic Airflow Measurement Device for Ducted Air

, 2015
In this study, an in-duct ultrasonic airflow measurement device has been designed, developed and tested. The airflow measurement results for a small range of airflow velocities and temperatures show that the accuracy was better than 3.5% root mean square
Andrew B. Raine, Underwood, Chris, Raine, Andrew, Aslam, Nauman, Danaher, Sean, Christopher P. Underwood, Sean Danaher, Christopher Underwood, Nauman Aslam, Andrew Raine   +9 more
core   +1 more source