Results 71 to 80 of about 837,361 (340)

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

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 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

Aortic Stiffness Measured by Carotid Femoral-Pulse Wave Velocity at Different Stages of Normal Glucose, Prediabetes, and Diabetes Mellitus: A Systematic Review and Meta-Analysis

Reviews in Cardiovascular Medicine
Background: To explore aortic stiffness measured by carotid femoral-pulse wave velocity (cf-PWV) at different stages of normal glucose, prediabetes, and diabetes mellitus (DM). Methods:
Xiao Liang, Dongdong Li, Zhen Wang, Yuxin Cheng, Ke Mou, Chenyu Ye, Yunyou Duan, Yong Yang   +7 more
doaj   +1 more source

Influence of Hydrodynamics and Hematocrit on Ultrasound-Induced Blood Plasmapheresis

Micromachines, 2020
Acoustophoretic blood plasma separation is based on cell enrichment processes driven by acoustic radiation forces. The combined influence of hematocrit and hydrodynamics has not yet been quantified in the literature for these processes acoustically ...
Itziar González, Roque Rubén Andrés, Alberto Pinto, Pilar Carreras   +3 more
doaj   +1 more source

Ultrasonic bone densitometer [PDF]

, 1974
A device, for measuring the density of a bone structure so as to monitor the calcium content, is described. A pair of opposed spaced ultrasonic transducers are held within a clamping apparatus closely adjacent the bone being analyzed.
Hoop, J. M.
core   +1 more source

Understanding the Effect of Resistance Temperature Detector Temperature Controllers on Microstructural Alignment in Magnetic Freeze Casting

Advanced Engineering Materials, EarlyView.
The effect of temperature controllers that are commonly used in freeze‐casting is investigated in this work. Temperature controllers are observed to generate a voltage in the slurry. Microstructural alignment and ultimate compressive strength data show this voltage to interfere with the ability to align the microstructure using magnetic fields ...
Maddie A. Schmitz, Steven E. Naleway
wiley   +1 more source

NF‐κB affected the serum levels of TNF‐α and IL‐1β via activation of the MAPK/NF‐κB signaling pathway in rat model of acute pulmonary microthromboembolism

Pulmonary Circulation
Pulmonary thromboembolism caused by thrombi blocking major pulmonary artery and its branches, is a frequently encountered phenomenon and an important cause of high morbidity and mortality in lung diseases and may develop into persistent pulmonary ...
Yanfen Zhong, Binbin Liang, Xiaofeng Zhang, Jingtao Li, Decai Zeng, Tongtong Huang, Ji Wu   +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

Ultrasonic preparation, stability and thermal conductivity of a capped copper - methanol nanofluid [PDF]

, 2019
This paper describes a two-step method to prepare novel copper-methanol nanofluids capped with a short chain molecule, (3-Aminopropyl)trimethoxysilane (APTMS).
Emekwuru, Nwabueze, Graves, John, Greenwood, Alan, Latvyte, Egle   +3 more
core   +1 more source