Results 21 to 30 of about 24,482 (255)

Study on a novel omnidirectional ultrasonic cavitation removal system for Microcystis aeruginosa

Ultrasonics Sonochemistry, 2022
Microcystis aeruginosa, as a typical alga, produces microcystin with strong liver toxicity, seriously endangering the liver health of human and animals. Inhibiting the bloom of the Microcystis aeruginosa in lakes becomes a significant and meaningful work.
Hao-Ren Feng, Jian-An Wang, Liang Wang, Jia-Mei Jin, Shu-Wen Wu, Charles-C. Zhou   +5 more
doaj   +1 more source

Measurement of a 3D Ultrasonic Wavefield Using Pulsed Laser Holographic Microscopy for Ultrasonic Nondestructive Evaluation

Sensors, 2018
In ultrasonic array imaging, 3D ultrasonic wavefields are normally recorded by an ultrasonic piezo array transducer. Its performance is limited by the configuration and size of the array transducer.
Xing Wang, Guang-Ming Zhang, Hongwei Ma, Yishu Zhang, Doudou Wang   +4 more
doaj   +1 more source

Two-Dimensional Photoacoustic/Ultrasonic Endoscopic Imaging Based on a Line-Focused Transducer

Frontiers in Bioengineering and Biotechnology, 2022
Existing acoustic-resolution photoacoustic/ultrasonic endoscopy (PA/USE) generally employs a point-focused transducer for ultrasound detection, which is only sensitive in its focal region, thus the lateral resolution and sensitivity drop dramatically ...
Weiran Pang, Weiran Pang, Yongjun Wang, Lili Guo, Bo Wang, Puxiang Lai, Jiaying Xiao   +6 more
doaj   +1 more source

Development and Investigation of High-Temperature Ultrasonic Measurement Transducers Resistant to Multiple Heating–Cooling Cycles

Sensors, 2023
Usually for non-destructive testing at high temperatures, ultrasonic transducers made of PZT and silver electrodes are used, but this could lead to damage to or malfunction of the ultrasonic transducer due to poor adhesion between PZT and silver ...
Vaida Vaskeliene, Reimondas Sliteris, Rymantas Jonas Kazys, Egidijus Zukauskas, Liudas Mazeika   +4 more
doaj   +1 more source

Functional Materials for ICE and IVUS Piezoelectric Transducers: A Review

Sensors
This review paper provides a comprehensive overview of the functional materials and assembly technologies used in intracardiac echocardiography (ICE) and intravascular ultrasound (IVUS) transducers.
Dayong He, Baihezi Ye
doaj   +1 more source

Ultrasonic Detection of Transversal Cracks in Rail Heads – Theoretical Approach

Engineering Transactions, 2021
In the paper the calculation of ultrasonic field generated by the transmitting transducer and the pulse-echo amplitude received after beam reflection at the defect in tested material is presented.
Tomasz KATZ, Sławomir MACKIEWICZ, Zbigniew RANACHOWSKI, Zbigniew L. KOWALEWSKI, Łukasz ANTOLIK   +4 more
doaj   +1 more source

Capacitive Micromachined Ultrasonic Transducers (CMUTs) for Underwater Imaging Applications

Sensors, 2015
A capacitive micromachined ultrasonic transducer structure for use in underwater imaging is designed, fabricated and tested in this paper. In this structure, a silicon dioxide insulation layer is inserted between the top electrodes and the vibration ...
Jinlong Song, Chenyang Xue, Changde He, Rui Zhang, Linfeng Mu, Juan Cui, Jing Miao, Yuan Liu, Wendong Zhang   +8 more
doaj   +1 more source

Numerical and experimental analysis of focused air-coupled ultrasonic transducer based on cross-linked polypropylene film

AIP Advances, 2022
Air-coupled ultrasonic transducers based on novel piezoelectrets with extremely small acoustic impedance have some distinctive advantages including no coupling agent, flexibility, and eco-friendliness, compared to conventional ultrasonic transducers ...
Feng Li, Yuxuan Zhang, Yongdong Pan, Jinfeng Zhao, Xiaoqing Zhang   +4 more
doaj   +1 more source

Somatostatin receptor 4 (SSTR4) is a tumor suppressor in cutaneous and head & neck squamous cell carcinomas

Molecular Oncology, EarlyView.
This study identifies somatostatin receptor 4 (Sstr4) as a critical tumor suppressor against skin and head/neck cancers (HNSCC, cSCC, and BCC). The loss of Sstr4 removes a check on cell growth, causing hyperactivation of the MAPK‐ERK signaling pathway (↑).
Ali Taqvi, Tuan Khang Huynh, Adway Kadam, Zahra Kardan, Yue Yan, Amina Jamal Laham, Sampath Kumar Loganathan   +6 more
wiley   +1 more source

Design of a Longitudinal-Bending Elliptical Vibration Ultrasonic Transducer with a Bent Horn

Actuators
The thin and straight horn of the ultrasonic transducer is located in the center of the thick transducer, so that the tool tip of the ultrasonic vibration turning tool holder cannot be located on the outermost side of the entire tool holder, which leads ...
Zhiyong Huang, Mingshuo Zhang, Jiteng Li, Xinggang Jiang, Daxi Geng, Deyuan Zhang   +5 more
doaj   +1 more source