Results 81 to 90 of about 664,027 (290)

High-frequency Doppler ultrasound flowmeter

Archives of Acoustics, 2014
This paper discusses a new Doppler device for measuring blood flow in small vessels. The ultrasound frequency applied is 20M Hz. Two different ultrasound probes were designed with transducer diameters of 0.9 mm and 1.6 mm. The transducers were located at
A. NOWICKI, W. SECOMSKI, P. KARŁOWICZ, G. ŁYPACEWICZ   +3 more
doaj  

Design and Experimental Research for the Ultrasonic Burnishing System on Rods for Hydraulic Applications Surfaces

Journal of Manufacturing and Materials Processing
To explore the effects of ultrasonic burnishing strengthening technology on the surface morphology and mechanical properties of 40Cr rods for hydraulic applications, a conical transition composite amplitude transformer was designed using ANSYS (Workbench
Erbo Liu, Qingchun Li, Xufeng Song, Qingqing Lü, Xiaodong Liu, Liquan Yang, Qun Li, Yun Hu, Qianyang Zhao   +8 more
doaj   +1 more source

Full and half-wavelength ultrasonic percussive drills [PDF]

, 2018
Ultrasonic-percussive drills are a leading technology for small rock drilling applications where power and weight-on-bit are at a premium. The concept uses ultrasonic vibrations to excite an oscillatory motion in a free-mass, which then delivers ...
Harkness, Patrick, Li, Xuan, Lucas, Margaret   +2 more
core   +1 more source

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

Advanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi, Pasquale Guglielmi, Gianfranco Palumbo, Giuseppe Carbone   +3 more
wiley   +1 more source

Diagnostic value of multimodal hysterosalpingo-contrast sonography combined with negative intrauterine contrast-enhanced ultrasound in female infertility

BMC Women's Health
Objective To investigate the application value of multimodal hysterosalpingo-contrast sonography (HyCoSy) combined with negative hysterography in assessing tubal patency and diagnosing uterine lesions.
Fen Fu, Yi-Fan Zhu, Yue-Fan Chen, Jia-Jing Zhuang, Wen-Ting Zheng, Rong-Xi Liang, Qin Ye   +6 more
doaj   +1 more source

Investigation of forming quality and failure behaviours of multilayered welded joints using ultrasonic double roller welding

Alexandria Engineering Journal
Ultrasonic metal welding machines are suitable for various complex applications (e.g., battery tabs) through unique mechanical design, special pressure application methods and high-precision welding. This work reports the weldability, forming quality and
Zeshan Abbas, Lun Zhao, Jianxiong Su, Peng Zhang, Jianxiong Deng, Zeng Jiaqi, Vivek Patel, Hafiz Abdul Saboor, Md Shafiqul Islam   +8 more
doaj   +1 more source

A Characterization of Ultrasonic Full Angle Spatial Compounding as a Possible Alternative for Breast Cancer Screening

Archives of Acoustics, 2015
Breast cancer screening is based on X-ray mammography, while ultrasound is considered a complementary technique with improved detection in dense tissue.
Luis MEDINA, Jorge CAMACHO, Carlos FRITSCH   +2 more
doaj   +1 more source

Ultrasonic needles for bone biopsy [PDF]

, 2017
Bone biopsy is an invasive clinical procedure where a bone sample is recovered for analysis during the diagnosis of a medical condition. When the architecture of the bone tissue is required to be preserved, a core-needle biopsy is taken.
Cleary, Rebecca, Li, Li, Lucas, Margaret, Mathieson, Andrew, Simpson, Hamish, Wallace, Robert   +5 more
core   +1 more source

Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy

Advanced Engineering Materials, EarlyView.
This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar, David Osman Busse, Maximilian Sprengel, Domenico Furfari, Marc‐André Nielsen, Guilherme Abreu Faria, Jérémy Epp   +6 more
wiley   +1 more source

Fusion model combining ultrasound-based radiomics and deep transfer learning with clinical parameters for preoperative prediction of pelvic lymph node metastasis in cervical cancer

Frontiers in Oncology
BackgroundTo develop and validate a multimodal fusion model integrating ultrasound-based radiomics, deep transfer learning (DTL), and clinical parameters for preoperative pelvic lymph node metastasis (PLNM) prediction in cervical cancer.MethodsA ...
Jihan Wang, Shengxian Bao, Tongtong Huang, Yongzhi Cai, Binbin Jin, Ji Wu   +5 more
doaj   +1 more source