听力与言语-语言病理学

行为科学

医学伦理学

你正在浏览ULTRASONICS期刊下所有文献
  • A fast technique for hyper-echoic region separation from brain ultrasound images using patch based thresholding and cubic B-spline based contour smoothing.

    abstract::Ultrasound image guided brain surgery (UGBS) requires an automatic and fast image segmentation method. The level-set and active contour based algorithms have been found to be useful for obtaining topology-independent boundaries between different image regions. But slow convergence limits their use in online US image s...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2020.106304

    authors: Chel H,Bora PK,Ramchiary KK

    更新日期:2021-03-01 00:00:00

  • Peculiarities of energy trapping of the UHF elastic waves in diamond-based piezoelectric layered structure. II. Lateral energy flow.

    abstract::Features of an acoustic energy trapping and outflow in a High-overtone Bulk Acoustic Resonator (HBAR) were considered. On the example of a specified resonator based on a piezoelectric layered structure (PLS) as "Al/AlN/Mo/(100) diamond", the simulation of the propagation of microwave acoustic waves in the range of 10-...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2020.106311

    authors: Kvashnin GM,Sorokin BP

    更新日期:2021-03-01 00:00:00

  • Generalised bisection method for optimum ultrasonic ray tracing and focusing in multi-layered structures.

    abstract::Ultrasonic testing has been used for many decades, proving itself very efficient for detecting defects in many industrial sectors. The desire to apply ultrasonic testing to geometrically complex structures, and to anisotropic, inhomogeneous materials, together with the advent of more powerful electronics and software,...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2020.106330

    authors: Mineo C,Lines D,Cerniglia D

    更新日期:2021-03-01 00:00:00

  • Utility of quantitative ultrasound in community screening for hepatic steatosis.

    abstract::Nonalcoholic fatty liver disease (NAFLD) is the most common chronic liver disease. Quantitative ultrasound facilitates clinical grading of hepatic steatosis (the early stage of NAFLD). However, the utility of quantitative ultrasound as a first-line method for community screening of hepatic steatosis remains unclear. T...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2020.106329

    authors: Chang TY,Chang SH,Lin YH,Ho WC,Wang CY,Jeng WJ,Wan YL,Tsui PH

    更新日期:2021-03-01 00:00:00

  • High-intensity ultrasound irradiation promotes the release of extracellular vesicles from C2C12 myotubes.

    abstract::Skeletal muscle is an important secretory organ in mammals, producing myriad chemical mediators ("myokines") with distinct biological action in different tissues, including anti-inflammatory activity. Extracellular vesicles (EVs) have recently been identified as a mode of myokine transport from muscle, facilitating su...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2020.106243

    authors: Maeshige N,Langston PK,Yuan ZM,Kondo H,Fujino H

    更新日期:2021-02-01 00:00:00

  • Focused ultrasound phantom model for blood brain barrier disruption.

    abstract::In this paper a high intensity focused ultrasound (FUS) phantom model was developed, in order to be used in experiments for Blood Brain Barrier (BBB) disruption. The target was to create a phantom model that represents the disruption of the BBB during ultrasound application. An appropriate experimental setup was creat...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2020.106244

    authors: Alekou T,Giannakou M,Damianou C

    更新日期:2021-02-01 00:00:00

  • Weighted non-linear beamformers for low cost 2-element receive ultrasound imaging system.

    abstract::In this paper, the development of modified beamforming methods, Filtered Delay Weight Multiply and Sum (F-DwMAS) and Filtered Delay Euclidian-Weighted Multiply and Sum (F-DewMAS), are reported. These methods were investigated on a minimum-redundancy synthetic aperture technique, called as 2 element Receive Synthetic A...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2020.106293

    authors: Vayyeti A,Thittai AK

    更新日期:2021-02-01 00:00:00

  • Non-contact measurement of the thickness of a surface film using a superimposed ultrasonic standing wave.

    abstract::Most methods used to measure the thickness of thin liquid or solid surface films and coatings need access to the coated surface. In this work reflected ultrasonic pulses were used to measure a coating thickness from a solid back face. Piezoelectric transducers on the solid back face emitted ultrasound waves and receiv...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2020.106291

    authors: Kanja J,Mills R,Li X,Brunskill H,Hunter AK,Dwyer-Joyce RS

    更新日期:2021-02-01 00:00:00

  • Stoneley-type waves in anisotropic periodic superlattices.

    abstract::The paper investigates the existence of interfacial (Stoneley-type) acoustic waves localised at the internal boundary between two semi-infinite superlattices which are adjoined with each other to form one-dimensional phononic bicrystal. Each superlattice is a periodic sequence of perfectly bonded homogeneous and/or fu...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2020.106237

    authors: Darinskii AN,Shuvalov AL

    更新日期:2021-01-01 00:00:00

  • Integrated performance improvement for a bimodal linear ultrasonic motor using a dual-frequency asymmetric excitation method.

    abstract::To improve the integrated performance of a representative bimodal linear ultrasonic motor under continuous operation, this paper proposes a novel dual-frequency asymmetric excitation method for such motors which can operate under traditional single-phase asymmetric or two-phase symmetric excitation modes. In particula...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2020.106224

    authors: Li X,Huang Y,Zhou L

    更新日期:2020-12-01 00:00:00

  • Temperature prediction of ultrasonic vibration-assisted milling.

    abstract::Machining temperature is a key factor in ultrasonic vibration-assisted milling as it can significantly influence tool wear rate and residual thermal stresses. In current study, a physics-based analytical predictive model on machining temperature in ultrasonic vibration-assisted milling is proposed, without resorting t...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2020.106212

    authors: Feng Y,Hsu FC,Lu YT,Lin YF,Lin CT,Lin CF,Lu YC,Liang SY

    更新日期:2020-12-01 00:00:00

  • 100 MHz bandwidth planar laser-generated ultrasound source for hydrophone calibration.

    abstract::High-frequency calibration of hydrophones is becoming increasingly important, both for clinical and scientific applications of ultrasound, and user safety. At present, the calibrations available routinely to the user community extend to 60 MHz. However, hydrophones that can measure beyond this are available, and ultra...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2020.106218

    authors: Rajagopal S,Cox BT

    更新日期:2020-12-01 00:00:00

  • A reverse time migration-based multistep angular spectrum approach for ultrasonic imaging of specimens with irregular surfaces.

    abstract::We develop a new ultrasonic imaging framework for non-destructive testing of an immersed specimen featuring an irregular top surface and demonstrate its capability of accurately depicting the lower surfaces of multiple damages hidden in the specimen. Central to the framework is a multistep angular spectrum approach (A...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2020.106233

    authors: Yang X,Wang K,Xu Y,Xu L,Hu W,Wang H,Su Z

    更新日期:2020-12-01 00:00:00

  • Modal analysis and moving performance of a single-mode linear ultrasonic motor.

    abstract::A single-mode linear ultrasonic motor was developed in this study. On the stator, a group of four pieces of piezoelectric ceramics PZT8 were utilized to generate the ultrasonic vibration. A specially designed modal conversion horn with an oblique beam was applied to transfer the longitudinal vibration to an additional...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2020.106216

    authors: Yin Z,Dai C,Cao Z,Li W,Chen Z,Li C

    更新日期:2020-12-01 00:00:00

  • Experimental and numerical investigations of mechanical displacements in surface acoustic wave bounded beams.

    abstract::The present paper studies experimentally and numerically the surface acoustic wave (SAW) field on a piezoelectric substrate generated by interdigital transducers (IDT). On the one hand, mechanical displacements produced by the SAW are measured with the help of a laser Doppler vibrometer. On the other hand, mechanical ...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2020.106077

    authors: Weser R,Darinskii AN,Weihnacht M,Schmidt H

    更新日期:2020-08-01 00:00:00

  • Probing the limits of full-field linear local defect resonance identification for deep defect detection.

    abstract::Local Defect Resonance (LDR) is exploited for non-destructive testing (NDT) by using ultrasonic vibrations to get a localized resonant activation of defected zones. The LDR technique relies on the local stiffness difference between the defect and the sound material. Analyzing the structure's displacement field at this...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2020.106130

    authors: Segers J,Hedayatrasa S,Poelman G,Van Paepegem W,Kersemans M

    更新日期:2020-07-01 00:00:00

  • A novel method for Estimating Time of Flight of ultrasonic echoes through short-time Fourier transforms.

    abstract::The accurate estimation of time of flight (TOF) of an ultrasonic signal is essential in ultrasonic non-destructive testing (NDT). A novel method for TOF estimation based on the short-time Fourier transform (STFT) is proposed in this paper. Firstly, the time and frequency components of ultrasonic echoes are represented...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2020.106104

    authors: Lu Z,Ma F,Yang C,Chang M

    更新日期:2020-04-01 00:00:00

  • Nondestructive evaluation of steel-concrete composite structure using high-frequency ultrasonic guided wave.

    abstract::Steel-concrete modular construction is increasingly used in nuclear structure construction. Conventional nondestructive testing methods are not able to detect internal concrete defects because the thick concrete wall is covered by steel plates. An ultrasonic guided method is proposed to detect honeycombs and voids aro...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2020.106096

    authors: Sun H,Zhu J

    更新日期:2020-04-01 00:00:00

  • Investigating ultrasound-induced acoustic softening in aluminum and its alloys.

    abstract::Ultrasonic vibration has been observed to lower the flow stress necessary to initiate plastic deformation, a phenomenon known as "acoustic softening". This unique effect of ultrasound has been extensively applied in welding, machining, forming of metals, and ultrasonic additive manufacturing to lower the yield stress ...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2019.106005

    authors: Mao Q,Coutris N,Rack H,Fadel G,Gibert J

    更新日期:2020-03-01 00:00:00

  • Multi-directional bubble generated streaming flows.

    abstract::In previous work, we have demonstrated the use of single-holed Armoured Microbubbles (AMBs) for microfluidic mixing and self-propulsion. AMBs are hollow partial spheres, inside which we capture a bubble. Under ultrasound, the bubble oscillates, generating a streaming flow with velocities of 1-100 mm/s in water. In thi...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2019.106054

    authors: Spelman TA,Stephan O,Marmottant P

    更新日期:2020-03-01 00:00:00

  • Microbiological properties of poultry breast meat treated with high-intensity ultrasound.

    abstract::Lactic acid, psychrophilic, and mesophilic bacteria, Escherichia coli, Salmonella spp. and Staphylococcus aureus were enumerated on chicken breasts after treatment with different high intensity ultrasound (frequency 40 kHz, intensity 9.6 W/cm-2) application times (0, 30, and 50 min) and packaging atmospheres (aerobic ...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2018.01.001

    authors: Piñon MI,Alarcon-Rojo AD,Renteria AL,Carrillo-Lopez LM

    更新日期:2020-03-01 00:00:00

  • Optimizing graphene production in ultrasonic devices.

    abstract::In this work, we investigate the efficiency of graphene production from graphite by ultrasonic-induced exfoliation under different operational conditions. An ultrasonic bath and an ultrasonic horn tip were used, to show how the graphene production efficiency depends on the acoustic intensity and cavitation mechanism u...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2019.105989

    authors: Silva LI,Mirabella DA,Pablo Tomba J,Riccardi CC

    更新日期:2020-01-01 00:00:00

  • Acoustic source localization in a highly anisotropic plate with unknown orientation of its axes of symmetry and material properties with numerical verification.

    abstract::Development of acoustic source localization techniques in anisotropic plates has gained attention in the recent past and still has scope of improvement. Most of such techniques existing in the literature either require known material properties or assume a straight line propagation of wave energy from the acoustic sou...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2019.105977

    authors: Sen N,Kundu T

    更新日期:2020-01-01 00:00:00

  • Nonlinear Coda Wave Interferometry: Sensitivity to wave-induced material property changes analyzed via numerical simulations in 2D.

    abstract::The numerical studies conducted in this paper are based on our previous research (Chen et al., 2017); through use of the spectral element method, parametric sensitivity studies of Nonlinear Coda Wave Interferometry (NCWI) are established here and divided into two parts. In the first part, CWI observables are found to ...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2019.105968

    authors: Chen G,Pageot D,Abraham O,Zhang Y,Chekroun M,Tournat V

    更新日期:2019-11-01 00:00:00

  • A new beamforming method and hardware architecture for real time two way dynamic depth focusing.

    abstract::The Total Focusing Method (TFM) yields a focused image in emission and in reception while Phased Array (PA) imaging provides Dynamic Depth Focusing (DDF) in reception only. Besides, most NDE applications have two propagation media, where refraction at the interface complicates time-of-flight (TOF) and focal law comput...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2019.105965

    authors: Cruza JF,Camacho J,Mateos R,Fritsch C

    更新日期:2019-11-01 00:00:00

  • Understanding the effect of methane gas sensitivity using ultrasonic sensors and multi-matching layers inside a natural gas vehicle tank.

    abstract::This research paper is the experimental study to investigate the effect of ultrasound sensitivity in the pure methane gas space as the pressure and sensor distance increases. We offer the solution to overcome the low sensitivity characteristics of ultrasonic sensors in the methane gas space. This proposal shows the ph...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2019.105970

    authors: Kim K,Choi D,Im S

    更新日期:2019-11-01 00:00:00

  • Visualization of the interaction of guided acoustic waves with water by light refractive vibrometry.

    abstract::Guided acoustic waves, such as Lamb waves, are widely applied for material characterization, sensing of liquids and the generation of streaming in liquids. There are numerical simulation tools for the prediction of their propagation near a solid-liquid boundary but a demand for complementary measurement techniques for...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2019.105955

    authors: Tietze S,Lindner G

    更新日期:2019-11-01 00:00:00

  • Excitation and detection of evanescent acoustic waves in piezoelectric plates: Theoretical and 2D FEM modeling.

    abstract::This paper presents the results of the theoretical and 2D FEM modeling excitation and detection of evanescent acoustic waves in piezoelectric plates. By application of 2D ordinary differential equations derived by Auld, we obtained the dispersion curves of A1 and SH1 waves in YX LiNbO3 and YX KNbO3 plates in proximity...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2019.105961

    authors: Kuznetsova I,Nedospasov I,Smirnov A,Qian ZH,Wang B,Dai XY

    更新日期:2019-11-01 00:00:00

  • Inversion algorithm for Lamb-wave-based depth characterization of acoustic emission sources in plate-like structures.

    abstract::An inversion algorithm (termed AEDep) is proposed for estimating the depth of acoustic emission (AE) sources in plate-like structural components. The work is motivated by the need for characterizing early-stage fatigue crack growth in such components. The algorithm achieves depth estimation by automatically extracting...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2019.105975

    authors: Dubuc B,Ebrahimkhanlou A,Livadiotis S,Salamone S

    更新日期:2019-11-01 00:00:00

  • Sonothrombolysis with magnetic microbubbles under a rotational magnetic field.

    abstract::Thrombosis is an extremely critical clinical condition where a clot forms inside a blood vessel which blocks the blood flow through the cardiovascular system. Previous sonothrombolysis methods using ultrasound and microbubbles (MBs) often have a relatively low lysis rate due to the low microbubbles concentration at cl...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2019.06.004

    authors: Zhang B,Kim H,Wu H,Gao Y,Jiang X

    更新日期:2019-09-01 00:00:00

  • Generation of sub-microsecond quasi-unipolar pressure pulses.

    abstract::We present a method to generate sub-microsecond quasi-unipolar pressure pulses. Our approach is based on the laser irradiation of a thin copper wire submerged in water. The acoustic waveforms were recorded using two different, well characterized, wideband detection techniques: piezoelectric and optical interferometry....

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2019.05.002

    authors: González MG,Riobó LM,Ciocci Brazzano L,Veiras FE,Sorichetti PA,Santiago GD

    更新日期:2019-09-01 00:00:00

  • Sparsity-based beamforming to enhance two-dimensional linear-array photoacoustic tomography.

    abstract::In linear-array photoacoustic imaging (PAI), beamforming methods can be used to reconstruct the images. Delay-and-sum (DAS) beamformer is extensively used due to its simple implementation. However, this algorithm results in high level of sidelobes and low resolution. In this paper, it is proposed to form the photoacou...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2019.03.010

    authors: Paridar R,Mozaffarzadeh M,Periyasamy V,Pramanik M,Mehrmohammadi M,Orooji M

    更新日期:2019-07-01 00:00:00

  • Evidence of dissipative and growing nonlinearity in Lamb waves due to stress-relaxation and material degradation in composites.

    abstract::Experimentally observed dissipated nonlinearity in Lamb wave propagation in composites due to stress-relaxation is reported herein. It was found that the stress relaxation in composite is inherently coupled with the second order nonlinear parameter derived from the Lamb wave modes. Due to the combined effect of intern...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2019.01.002

    authors: Patra S,Ahmed H,Saadatzi M,Banerjee S

    更新日期:2019-07-01 00:00:00

  • Fundamental wave amplitude difference imaging for detection and characterization of embedded cracks.

    abstract::An ultrasonic technique for imaging nonlinear scatterers, such as partially-closed cracks, buried in a medium has been recently proposed. The method called fundamental wave amplitude difference (FAD) consists of a sequence of acquisitions with different subsets of elements for each line of the image. An image revealin...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2019.02.003

    authors: Haupert S,Ohara Y,Carcreff E,Renaud G

    更新日期:2019-07-01 00:00:00

  • Investigation of ultrasonic absorption in the MHz frequency range by silicon substrates with a built-in porous silicon layer.

    abstract::The present study is focused on the development and characterization of an innovative substrate to optimize the axial resolution of ultrasonic transducers on a silicon substrate that is dedicated to ultrasound imaging. The substrate must efficiently dampen wave propagation to avoid degradation of the axial resolution ...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2019.01.006

    authors: Lascaud J,Defforge T,Gautier G,Certon D

    更新日期:2019-07-01 00:00:00

  • New nonlinear ultrasonic method for material characterization: Codirectional shear horizontal guided wave mixing in plate.

    abstract::A nonlinear ultrasonic method is proposed based on a group of newly discovered wave triplets where two primary codirectional shear-horizontal SH0 waves mix in a weakly nonlinear plate and generate a cumulative S0 Lamb wave at the sum frequency. Theoretical analyses show that any combination of two primary SH0 waves wh...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2019.04.001

    authors: Shan S,Hasanian M,Cho H,Lissenden CJ,Cheng L

    更新日期:2019-07-01 00:00:00

  • The effect of the conductivity of a film located near a piezoelectric resonator with a lateral electric field based on the PZT ceramics on its characteristics.

    abstract::In this paper, we investigated theoretically and experimentally the effect of the conductivity of the film located in the immediate vicinity of the free side of a piezoelectric resonator based on the PZT ceramics on its characteristics. It is shown that with increasing the conductivity of the film at first the paralle...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2018.09.016

    authors: Zaitsev BD,Semyonov AP,Teplykh AA,Borodina IA

    更新日期:2019-04-01 00:00:00

  • The nonlinear S0 Lamb mode in a plate with a linearly-varying thickness.

    abstract::The aim of this paper is to investigate propagation characteristics and the generation mechanism of the nonlinear lowest-order symmetric Lamb mode (S0) which propagates downslope in free elastic plates with slowly linearly varying-thickness. From theoretical analyses, in a low frequency-thickness product (fd) range, t...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2018.11.013

    authors: Hu Z,An Z,Kong Y,Lian G,Wang X

    更新日期:2019-04-01 00:00:00

  • Convolutional neural network for ultrasonic weldment flaw classification in noisy conditions.

    abstract::Ultrasonic flaw classification in weldment is an active area of research and many artificial intelligence approaches have been applied to automate this process. However, in the industrial applications, the ultrasonic flaw signals are not noise free and automatic intelligent defect classification algorithms show relati...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2018.12.001

    authors: Munir N,Kim HJ,Park J,Song SJ,Kang SS

    更新日期:2019-04-01 00:00:00

  • Determining sodium diffusion through acoustic impedance measurements using 80 MHz Scanning Acoustic Microscopy: Agarose phantom verification.

    abstract::The purpose of this study is to explore the feasibility of time-dependent acoustic impedance measurement by Scanning Acoustic Microscopy (SAM) for analyzing the sodium diffusion. The purpose is motivated by the fact that sodium monitoring is challenging and still in the area of exploratory analysis despite its biologi...

    journal_title:Ultrasonics

    pub_type: 杂志文章

    doi:10.1016/j.ultras.2018.12.013

    authors: Demirkan I,Unlu MB,Bilen B

    更新日期:2019-04-01 00:00:00

372 条记录 1/10 页 « 12345678910 »