Results 21 to 30 of about 4,364 (189)

A new species of Leptopelis (Anura, Arthroleptidae) from the south-eastern slope of the Ethiopian Highlands, with notes on the Leptopelis gramineus species complex and the revalidation of a previously synonymised species [PDF]

ZooKeys, 2021
A new ground-dwelling species of treefrog in the genus Leptopelis is described from the Harenna Forest in south-eastern Ethiopia. The description is based on morphology and acoustics and is supported by molecular data.
Arthur Tiutenko, Oleksandr Zinenko
doaj   +3 more sources

Scattering Evaluation of Equivalent Surface Impedances of Acoustic Metamaterials in Large FDTD Volumes Using RLC Circuit Modelling

Applied Sciences, 2021
Most simulations involving metamaterials often require complex physics to be solved through refined meshing grids. However, it can prove challenging to simulate the effect of local physical conditions created by said metamaterials into much wider ...
Eric Ballestero, Brian Hamilton, Noé Jiménez, Vicent Romero-García, Jean-Philippe Groby, Haydar Aygun, Stephen Dance   +6 more
doaj   +1 more source

Mechanosensitive channel MscL induces non-apoptotic cell death and its suppression of tumor growth by ultrasound

Frontiers in Chemistry, 2023
Mechanosensitive channel of large conductance (MscL) is the most thoroughly studied mechanosensitive channel in prokaryotes. Owing to its small molecular weight, clear mechanical gating mechanism, and nanopore forming ability upon opening, accumulating ...
Xiaoxu Wen, Yingying Wang, Zhenya Zhu, Shuangshuang Guo, Junjie Qian, Jinjun Zhu, Zhenni Yang, Weibao Qiu, Weibao Qiu, Guofeng Li, Li Huang, Mizu Jiang, Linhua Tan, Hairong Zheng, Hairong Zheng, Qiang Shu, Yuezhou Li   +16 more
doaj   +1 more source

Assessment of Molecular Acoustic Angiography for Combined Microvascular and Molecular Imaging in Preclinical Tumor Models [PDF]

Molecular Imaging and Biology, 2016
Purpose The purposes of the present study is to evaluate a new ultrasound molecular imaging approach in its ability to image a preclinical tumor model and to investigate the capacity to visualize and quantify co-registered microvascular and molecular imaging volumes.
Shelton, Sarah E., Foster, F. Stuart, Lindsey, Brooks D., Dayton, Paul A.   +3 more
openaire   +2 more sources

Molecular Acoustic Angiography: A New Technique for High-resolution Superharmonic Ultrasound Molecular Imaging [PDF]

Ultrasound in Medicine & Biology, 2016
Ultrasound molecular imaging utilizes targeted microbubbles to bind to vascular targets such as integrins, selectins, and other extracellular binding domains. After binding, these microbubbles are typically imaged using low pressures and multi-pulse imaging sequences.
Sarah E, Shelton, Brooks D, Lindsey, James K, Tsuruta, F Stuart, Foster, Paul A, Dayton   +4 more
openaire   +2 more sources

Exploitation of Acoustic Cavitation-Induced Microstreaming to Enhance Molecular Transport

Journal of Pharmaceutical Sciences, 2014
Ultrasound (US) exposure of soft tissues, such as the skin, has been shown to increase permeability, enhancing the passage of drug molecules via passive processes such as diffusion. However, US regimes have not been exploited to enhance active convective transport of drug molecules from a donor layer, such as a gel, into another medium.
Bhatnagar, S, Schiffter, H, Coussios, C
openaire   +4 more sources

Professor Stefan ERNST

Archives of Acoustics, 2015
It is with great sadness that we inform our readers about the recent death of Professor Stefan Ernst. Stefan Ernst was born in Piaśniki, Upper Silesia, on November 03, 1934, to parents of Polish-German descent. His primary education started during the
Mirosław CHORAZEWSKI
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Thermodynamic Method for Measuring the B/A Nonlinear Parameter Under High Pressure

Engineering Transactions, 2014
The nonlinearity parameter B/A is a measure of the nonlinearity of the equation of state for a fluid. The nonlinearity parameter B/A is a physical parameter often used in acoustics, from underwater acoustics to biology and medicine.
Piotr KIEŁCZYŃSKI, Marek SZALEWSKI, Andrzej BALCERZAK, Krzysztof WIEJA, Aleksander J. ROSTOCKI, Ryszard M. SIEGOCZYŃSKI   +5 more
doaj   +1 more source

Macroscopic quantum effects generated by acoustic waves in a molecular magnet [PDF]

Physical Review B, 2009
We have shown that the size of the magnetization step due to resonant spin tunneling in a molecular magnet can be strongly affected by sound. The transverse acoustic wave can also generate macroscopic quantum beats of the magnetization during the field sweep.
Kim, Gwang-Hee, Chudnovsky, E. M.
openaire   +2 more sources

Pressure Waves During Granular Flows in Varying Gravity Environments [PDF]

EPJ Web of Conferences
We present results of LAMMPS Molecular Dynamics simulations of 2D gravity-driven flows of 30,000 soft uniform spheres through a vertical silo. We vary the gravitational field (G), elastic modulus of the particles (E), and silo outlet diameter (D).
Tadlock Abigail, McCabe Lori, Nordstrom Kerstin   +2 more
doaj   +1 more source