Results 231 to 240 of about 34,206 (303)

Interface Engineering of Porous Transport Layer‐Catalyst Layer in Proton Exchange Membrane Water Electrolyzers: A Comprehensive Review

open access: yesAdvanced Materials Interfaces, EarlyView.
The PTL–CL interface plays a decisive role in PEMWE performance by governing electron conduction, water supply, oxygen removal, catalyst utilization, and interfacial stability. This review summarizes interface‐related resistance sources, characterization methods, and engineering strategies, highlighting rational PTL–CL interface design for low‐cost ...
Aobo Wan, Zhengkai Tu
wiley   +1 more source

Millifluidic Synthesis of Core–Shell Resonators For Tunable Sonic BandGaps in Acoustic Metamaterials

open access: yesAdvanced Materials Interfaces, EarlyView.
Millimeter‐scale core–shell acoustic resonators are fabricated by a gravity‐assisted dripping approach and incorporated into epoxy composites at controlled volume fractions. The resulting alumina–core resonator composites show tunable low‐frequency acoustic attenuation, demonstrating a scalable route for integrating locally resonant metamaterial units ...
Colton Steiner   +5 more
wiley   +1 more source

Sonophotocatalytic dimerization of coniferyl alcohol - The influence of energy distribution during sonication. [PDF]

open access: yesUltrason Sonochem
Paszkiewicz-Gawron M   +5 more
europepmc   +1 more source

Minimally Invasive Access in Endodontics: A National Survey of Brazilian Specialists. [PDF]

open access: yesBraz Dent J
Moraes FFR   +4 more
europepmc   +1 more source

Neural networks for faster laser ultrasound tomography in tissue phantoms. [PDF]

open access: yesPhotoacoustics
Al Fuwaires A   +6 more
europepmc   +1 more source
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ULTRASONIC PELVIMETRY

Obstetrical & Gynecological Survey, 1972
In recent years a high accuracy in measuring the biparietal diameter by ultrasonography has been achieved. As this is only one parameter in forecasting cephalo‐pelvic disproportion a study was made to determine whether the true conjugate can be measured by utrasound with approximately the same reliability as the biparietal diameter.
A, Kratochwil, N, Zeibekis
openaire   +2 more sources

Ultrasonic Tomography by Means of an Ultrasonic Fiberendoscope

Endoscopy, 1980
The diagnositc value of ultrasonic tomography of the upper abdominal organs is sometimes limited by bones and gas. Endoscopic ultrasonography (EUST) combines the advantages of the direct visualization of the upper GI tube and the ultrasonic imaging of adjacent organs.
W D, Strohm   +3 more
openaire   +2 more sources

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