Results 201 to 210 of about 175,414 (264)

Ultra high frequency ultrasound enables real-time visualization of blood supply from chorioallantoic membrane to human autosomal dominant polycystic kidney tissue. [PDF]

Sci Rep
Schueler J, Kuenzel J, Thuesing A, Pion E, Behncke RY, Haegerling R, Fuchs D, Kraus A, Buchholz B, Huang B, Merhof D, Werner JM, Schmidt KM, Hackl C, Aung T, Haerteis S.   +15 more
europepmc   +1 more source

Lithium Intercalation in the Anisotropic Van Der Waals Semiconductor CrSBr

Advanced Functional Materials, EarlyView.
We report the lithium intercalation in the layered van der Waals crystal CrSBr, revealing strongly anisotropic ion‐migration dynamics. Optical and electrical characterization of exfoliated CrSBr shows lithium diffusion coefficients that differ by more than an order of magnitude along a‐ and b‐directions, consistent with molecular dynamics simulations ...
Kseniia Mosina, Aljoscha Söll, Jiří Šturala, Martin Veselý, Petr Levinsky, Ondřej Kaman, Florian Dirnberger, Giuliana Materzanini, Nicola Marzari, Gian‐Marco Rignanese, Borna Radatović, Vlastimil Mazánek, David Sedmidubský, Zdeněk Sofer   +13 more
wiley   +1 more source

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Ultra-High-Frequency Electrocardiography

2021 Computing in Cardiology (CinC), 2021
Background: We introduce a new technology that uses the ultra-high-frequency components (150-1000 Hz) of the electrocardiogram (UHF-ECG).Method: The UHF-ECG components represent weak signals generated by the depolarization of myocardial cells. The amplitude of UHF oscillations decreases with distance from the source.
Jurak, P., Leinveber, P., Plesinger, F., Curila, K., Viscor, I., Vondra, V., Matejkova, M., Znojilova, L., Smisek, R., Lipoldova, J., Prinzen, F.W., Halamek, J.   +11 more
openaire   +2 more sources

Ultrasound Features of Onychopapilloma at High‐Frequency and Ultra‐High Frequency

Journal of Ultrasound in Medicine, 2023
ObjectiveThis study aimed to identify the sonographic features of pathologically confirmed onychopapilloma cases.MethodsHigh‐frequency up to 24 MHz and ultra‐high frequency‐ultrasound up to 71 MHz examinations were performed and correlated with their clinical and pathologic presentations.ResultsTwenty‐two cases met the criteria.
Sechi A., Starace M., Piraccini B. M., Wortsman X.   +3 more
openaire   +3 more sources

Ultra-high frequency filters

Journal of the Institution of Electrical Engineers - Part IIIA: Radiolocation, 1946
An account is given of measurements which have been made of the variation of attenuation with frequency in a number of concentric-line filters. It is shown that the results are in rough agreement with formulae derived from transmission-line theory, though discrepancies arising from end-effects are by no means negligible.
C.W. Oatley, C.M. Burrell
openaire   +1 more source

Ultra-high frequency drift waves

Plasma Physics, 1972
A dispersion relation is produced for ultra high frequency drift waves arising from an electron stream drifting through a density gradient in a plasma. Plasma stability is discussed.
E Detyna, E R Wooding
openaire   +1 more source

Ultra High Frequency Riplon Spectroscopy

Japanese Journal of Applied Physics, 2004
Light scattering study of ripplon (surface tension waves of thermal origin) was made at a high frequency range of more than 10 MHz on pure water surface. The observed power spectra were in very good agreement with the theoretical curves strictly derived from the fluctuation dissipation theory.
Keiji Sakai, Kazuyohi Omata, Kenshiro Takagi   +2 more
openaire   +1 more source