Results 101 to 110 of about 250,186 (352)
Deep Learning-based Universal Beamformer for Ultrasound Imaging
, 2019 In ultrasound (US) imaging, individual channel RF measurements are back-propagated and accumulated to form an image after applying specific delays. While this time reversal is usually implemented using a hardware- or software-based delay-and-sum (DAS ...
AC Jensen +6 more
core +1 more source
Ultrasonic selective hypophysectomy [PDF]
Ultrasonics, 1967 Up to now, new su rg i ca l appl ica t ions of u l t r a sound which have appea red ve ry p r o m i s i n g a r e hypophysectomy; l a rynx pap i l lotomy, by d i r ec t appl ica t ion of the probe (through d i r e c t la ryngoscopy) to the papi l loma; t r i g e m i n a l p r i m a r y neura lg ia , through d i r e c t appl ica t ion of the p robe to ...
openaire +4 more sources
Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications
Advanced Functional Materials, EarlyView.Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai +8 more
wiley +1 more source
Clinical and Experimental Obstetrics & GynecologyBackground: Noninvasive biomarkers need identification to enhance the diagnostic accuracy of endometrial cancer (EC) detection. The diagnostic and prognostic significance of serum miR-222-3p in EC was investigated in this study to ...
Shengrong Feng +5 more
doaj +1 more source
Advanced Functional Materials, EarlyView.This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner +9 more
wiley +1 more source
Analysis on Coupled Vibration of a Radially Polarized Piezoelectric Cylindrical Transducer
Sensors, 2017 Coupled vibration of a radially polarized piezoelectric cylindrical transducer is analyzed with the mechanical coupling coefficient method. The method has been utilized to analyze the metal cylindrical transducer and the axially polarized piezoelectric ...
Jie Xu, Shuyu Lin, Yan Ma, Yifan Tang
doaj +1 more source
Interdigital Piezopolymer Transducers for Time of Flight Measurements with Ultrasonic Lamb Waves on Carbon-Epoxy Composites under Pure Bending Stress [PDF]
, 2015 Andrea Bulletti, Lorenzo Capineri
openalex +1 more source
Advanced Functional Materials, EarlyView.This study demonstrates an alternative method of creating charge‐stable negatively charged nitrogen vacancy (NV−) centers close to the diamond surface without high‐temperature annealing. By illuminating nitrogen‐implanted regions with a continuous‐wave 405 nm laser, NV− centers are induced, exhibiting electron spin coherence properties suitable for ...
Jens Fuhrmann +4 more
wiley +1 more source
Analytical ultrasonics for structural materials [PDF]
The application of ultrasonic velocity and attenuation measurements to characterize the microstructure of structural materials is discussed. Velocity measurements in cast stainless steel are correlated with microstructural variations ranging from ...
Kupperman, D. S.
core +1 more source
Extraction of an Overlapped Second Harmonic Chirp Component using the Fractional Fourier Transform
, 2011 In ultrasound harmonic imaging with chirp coded excitation, the axial resolution can be improved by increasing the excitation signal bandwidth. However, increasing the bandwidth will cause overlapping between the received nonlinear second harmonic chirp ...
Arif, M +4 more
core +1 more source