Results 231 to 240 of about 6,877,005 (268)

Volume holographic imaging in transmission geometry

Applied Optics, 2004
We address the performance of transmission geometry volume holograms as depth-selective imaging elements. We consider two simple implementations using holograms recorded with spherical and plane beams. We derive the point-spread function (PSF) of these systems using volume diffraction theory and use the PSF to estimate depth resolution. Furthermore, we
Arnab, Sinha, Wenyang, Sun, Tina, Shih, George, Barbastathis   +3 more
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Integration of wiring transmission and volume transmission

2000
Publisher Summary Wiring transmission is the main form of chemical communication in the brain under most physiological conditions. However, substantial opportunity would seem to exist for the localized diffusion of transmitter, and transmitted-elicited signals, such as gases, to the releasing pre-synaptic terminal or to adjacent terminals within the ...
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Sound transmission in the lung as a function of lung volume

Journal of Applied Physiology, 2002
We were interested in how the transmission of sound through the lung was affected by varying air content in intact humans as a method of monitoring tissue properties noninvasively. To study this, we developed a method of measuring transthoracic sound transit time accurately.
T, Bergstresser, D, Ofengeim, A, Vyshedskiy, J, Shane, R, Murphy   +4 more
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Wiring and Volume Transmission in Rat Amygdala. Implications for Fear and Anxiety

Neurochemical Research, 2008
Kjell Fuxe, Miguel Pérez de la Mora, Candy Flores-Gracia   +2 more
exaly   +2 more sources

Effects of pore volume–transmissivity correlation on transport phenomena

Journal of Contaminant Hydrology, 2003
The relevant velocity that describes transport phenomena in a porous medium is the pore velocity. For this reason, one needs not only to describe the variability of transmissivity, which fully determines the Darcy velocity field for given source terms and boundary conditions, but also any variability of the pore volume.
Lunati, I., Kinzelbach, W., Sörensen, I.   +2 more
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Cell Volume Measurements by Optical Transmission Microscopy

Current Protocols in Cytometry, 2015
AbstractCell volume is an important parameter in cell adaptation to anisosmotic stress, in the development of apoptosis and necrosis, and in the pathogenesis of several diseases. This unit describes a method for measuring the volume of adherent cells using a standard light microscope.
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Brain motion and volume transmission: Keeping the interstice flowing

Medical Hypotheses, 2015
Human brain undergoes two different kinds of movements: subtle pulsatile ones associated with the cardiac cycle and others of a greater magnitude related to breathing activity. These motions constitute a pumping force for the circulation of cerebrospinal fluid (CSF).
Nelson A, Picard, Carlos A, Zanardi
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Efficient transmission of compressed data for remote volume visualization

IEEE Transactions on Medical Imaging, 2006
One of the goals of telemedicine is to enable remote visualization and browsing of medical volumes. There is a need to employ scalable compression schemes and efficient client-server models to obtain interactivity and an enhanced viewing experience. First, we present a scheme that uses JPEG2000 and JPIP (JPEG2000 Interactive Protocol) to transmit data ...
Karthik Krishnan, Michael W. Marcellin, Ali Bilgin, Mariappan S. Nadar   +3 more
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Single-laser high-volume transmission

Nature Photonics, 2011
Researchers in Europe have demonstrated that an optical fast Fourier transformation technique can be used to efficiently encode and decode information at rates of terabits per second in a single laser source.
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Cell Volume Regulation: Intracellular Transmission

1993
The cell membranes of virtually all animal cells are highly permeable to water, and hence the cell volume will be determined by the cellular content of osmotically active solutes and by the osmolality of the extracellular fluid. It should be noted, however, that in epithelial cells only the membrane on the basolateral side is highly water-permeable ...
Hoffmann, Else Kay, Simonsen, L.O., Lambert, Ian Henry   +2 more
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