Results 41 to 50 of about 75,682 (308)

Wave attenuation by flattened vegetation (Scirpus mariqueter)

Frontiers in Marine Science, 2023
With the capacity to reduce wave energy and trap sediment, Scirpus mariqueter has become an important native species of annual grass for ecology restoration at the Yangtze Estuary in eastern China. Due to seasonal variances of biophysical characteristics,
Yuxi Ma, Longhuan Zhu, Zhong Peng, Zhong Peng, Liming Xue, Wenzhen Zhao, Tianyou Li, Shiwei Lin, Tjeerd J. Bouma, Bas Hofland, Chuning Dong, Xiuzhen Li   +11 more
doaj   +1 more source

Modelling of particle paths passing through an ultrasonic standing wave

, 2004
Within an ultrasonic standing wave particles experience acoustic radiation forces causing agglomeration at the nodal planes of the wave. The technique can be used to agglomerate, suspend, or manipulate particles within a flow.
Hill, M., Harris, N.R., Townsend, R.J., White, N.M.   +3 more
core   +1 more source

Standing-wave interferometer [PDF]

, 2003
Stiebig H, Büchner H-J, Bunte E, Mandryka V, Knipp D, Jäger G. Standing-wave interferometer. Applied Physics Letters. 2003;83(1):12-14.An interferometric position sensor was developed using the concept of sampling a standing wave.
Büchner, H., Knipp, Dietmar, G. Jäger, Mandryka, V., Büchner, H.-J., H. Stiebig, D. Knipp, Bunte, Eerke, Stiebig, Helmut, E. Bunte, Bunte, E., V. Mandryka, Stiebig, H., Knipp, D., Jäger, G., H. Büchner   +15 more
core   +1 more source

Standing Waves in the FitzHugh-Nagumo System and a Problem in Combinatorial Geometry

, 2006
We show that there is a close relation between standing-wave solutions for the FitzHugh-Nagumo system \[ \Delta u +u(u-a)(1-u) - \delta v=0, \ \ \Delta v-\delta \gamma v + u=0 \ \ \mbox{in} \ R^N,\] \[ u, v \to 0 \ \mbox{as} \ |x| \to +\infty ...
Winter, M, Juncheng Wei, Matthias Winter, Wei, J   +3 more
core   +1 more source

Acoustic Devices for Particle and Cell Manipulation and Sensing [PDF]

, 2014
An emerging demand for the precise manipulation of cells and particles for applications in cell biology and analytical chemistry has driven rapid development of ultrasonic manipulation technology.
Hughes, David, Sylvia Gebhardt, Poltarjonoks, Romans, Sandy Cochran, David A. Hughes, Cochran, Sandy, Aleksandrs Bolhovitins, Gebhardt, Sylvia, Han Wang, Romans Poltarjonoks, Martyn Hill, Schönecker, Andreas, Peter Glynne-Jones, Christine Demore, Christine E. M. Demore, Weijer, Kees; id_orcid, Kees Weijer, Hill, Martyn, Hughes, David A., Glynne-Jones, Peter, Demore, Christine E. M., Bolhovitins, Aleksandrs, Yongqiang Qiu, Demore, Christine, David Hughes, Andreas Schönecker, Qiu, Yongqiang, Wang, Han, Weijer, Kees   +28 more
core   +1 more source

Resonance control of acoustic focusing systems through an environmental reference table and impedance spectroscopy. [PDF]

PLoS ONE, 2018
Acoustic standing waves can precisely focus flowing particles or cells into tightly positioned streams for interrogation or downstream separations. The efficiency of an acoustic standing wave device is dependent upon operating at a resonance frequency ...
Daniel M Kalb, Robert J Olson, Heidi M Sosik, Travis A Woods, Steven W Graves   +4 more
doaj   +1 more source

Epigenetic blind spots – the role of DNA methylation dynamics in stem cell‐based models of embryogenesis

FEBS Letters, EarlyView.
Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil, Anna Corrà, Annalisa Scapolatiello, Chengxiang Qiu, Gianluca Amadei   +4 more
wiley   +1 more source

Mode-switching: a new technique for electronically varying the agglomeration position in an acoustic particle manipulator

, 2010
Acoustic radiation forces offer a means of manipulating particles within a fluid. Much interest in recent years has focussed on the use of radiation forces in microfluidic (or “lab on a chip”) devices.
Harris, Nicholas R., Boltryk, Rosemary J., Hill, Martyn, Glynne-Jones, Peter, Cranny, Andy W.J.   +4 more
core   +1 more source

Evaluation of Modulus of Elasticity in Standing Trees and Sawn Wood in Populous deltoids using Nondestructive Stress Wave Testing [PDF]

Iranian Journal of Wood and Paper Industries, 2014
The aim of this paper was to evaluate relationship between dynamic modulus of elasticity (MOEd) in healthy standing trees of Populus deltoides and static modulus of elasticity (MOEs) of sawn lumber from the same standing trees, using nondestructive ...
Mehrab Madhoushi, Soheila Daneshvar
doaj  

Standing waves on infinite depth

Comptes Rendus. Mathématique, 2004
The two-dimensional standing wave problem, for an infinitely deep layer, is considered, based on the formulation of the problem as a second order non local PDE. Despite the presence of infinitely many resonances in the linearized problem, we use the Nash–Moser implicit function theorem to prove the existence of standing waves ...
Iooss, Gérard, Plotnikov, Pavel, Toland, John   +2 more
openaire   +1 more source