Results 51 to 60 of about 643,568 (346)

A Composite Pulse Excitation Technique for Air-Coupled Ultrasonic Detection of Defects in Wood

open access: yesSensors
To overcome the problems of the low signal-to-noise ratio and poor performance of wood ultrasonic images caused by ring-down vibrations during the ultrasonic quality detection of wood, a composite pulse excitation technique using a wood air-coupled ...
Jun Wang   +5 more
doaj   +1 more source

Biomedical ultrasonoscope [PDF]

open access: yes, 1979
The combination of a "C" mode scan electronics in a portable, battery powered biomedical ultrasonoscope having "A" and "M" mode scan electronics, the latter including a clock generator for generating clock pulses, a cathode ray tube having X, Y and Z ...
Lee, R. D.
core   +1 more source

Transcriptional profiling of circulating extracellular vesicles from prebiopsy prostate cancer patients

open access: yesMolecular Oncology, EarlyView.
RNA profiling of circulating extracellular vesicles (EVs) from blood samples of men undergoing prostate biopsy identifies transcripts associated with clinically significant prostate cancer. Integrative analysis with public tumor datasets links EV‐derived gene signatures to tumor stage and progression‐free survival, highlighting CASP3, XRCC2, and RIT1 ...
Stefan Werner   +14 more
wiley   +1 more source

Study on ultrasonic evaluation of connection state and service performance of resistance projection welding joints

open access: yesDiscover Applied Sciences
Fatigue failure of welded joints is a performance factor of structural parts under dynamic load, and the effective evaluation of its life is always the key to the service ability of structures.
Zhenzhen Duan   +5 more
doaj   +1 more source

Identifying Ultrasonic Testing Based Nondestructive Qualification Parameters for Laser DED Processed IN718

open access: yesNDT - Journal of Non-Destructive Testing
This article explores the use of ultrasonic nondestructive evaluation for qualification of laser-DED IN718 samples. The main goal of this article is to identify potential ultrasonic parameters which have highest sensitivity to microstructral changes that
Guillermo Huanes-Alvan   +2 more
doaj   +1 more source

Viscoelastic Evaluation of Composite Materials by Non-Contact Air Coupled Ultrasonic Transmission Method

open access: yesIEEE Access, 2021
The viscoelasticity of composite materials is one of the important mechanical properties to characterize the intrinsic damping mechanism, which is a crucial evaluation index for the safety performance of materials.
Junjie Chang   +4 more
doaj   +1 more source

Evaluation Of Ultrasonic C-Scan Images By Fractal Dimension

open access: yes, 2012
{"references": ["B. B. Mandelbrot, and J. W. Wallis, \"Fractional Brownian Motions,\"\nFractional Noises and Applications, SIAM review, 10: 422-437, 1968.", "B. B. Mandelbrot, \"The Fractal Geometry of Nature,\" W. H. Freeman,\nSan Francisco, CA, 1982.", "A. P.
S. Samanta, D. Datta, S. S. Gautam
openaire   +1 more source

Nondestructive characterization of the elastic properties of orthotropic composites with ultrasound [PDF]

open access: yes, 2011
Due to the increasing use of composite materials in critical applications demanding light weight to high strength ratio, reliable evaluation tools are necessary.
Degrieck, Joris   +5 more
core  

Screening and epitope characterization of Nidogen‐2‐specific nanobodies

open access: yesFEBS Open Bio, EarlyView.
Camel immunization and phage display were employed to generate high‐affinity VHH nanobodies against Nidogen‐2. After library construction, biopanning, ELISA screening, sequencing, and recombinant expression, selected nanobodies were purified and characterized, leading to the preliminary exploration of a nanobody‐based sandwich ELISA for specific ...
Jianchuan Wen   +9 more
wiley   +1 more source

Ultrasonic resonance evaluation method for deep interfacial debonding defects of multilayer adhesive bonded materials

open access: yesReviews on Advanced Materials Science
Multilayer adhesive bonded structures/materials (MABS) are widely used as structural components, especially in the field of aerospace. However, for MABS workpieces, the facts that the weak echo of the deep interfacial debonding defects (DB) caused by the
Guo Canzhi   +5 more
doaj   +1 more source

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