Experimental Studies and Verification of the Vertical Array-Differential Target Antenna Coupling (DTAC) Method for Rapid Sensing and Imaging of Subsurface Targets

2015 ◽  
Vol 20 (2) ◽  
pp. 119-136 ◽  
Author(s):  
Ben K. Sternberg ◽  
Wanjie Feng ◽  
Steven L. Dvorak ◽  
Richard D. Reavis
Keyword(s):  
Experimental Studies ◽  
Vertical Array ◽  
Antenna Coupling

scholarly journals Experimental studies of plasma-antenna coupling with the JET Alfvén Eigenmode Active Diagnostic

2020 ◽  
Vol 61 (2) ◽  
pp. 026003
Author(s):  
R.A. Tinguely ◽  
P.G. Puglia ◽  
N. Fil ◽  
S. Dowson ◽  
M. Porkolab ◽  
...  
Keyword(s):  
Experimental Studies ◽  
Plasma Antenna ◽  
Antenna Coupling

THE VERTICAL ARRAY IN REFLECTION SEISMOLOGY—SOME EXPERIMENTAL STUDIES

Geophysics ◽  
1976 ◽  
Vol 41 (2) ◽  
pp. 219-232 ◽  
Author(s):  
Paul C. Wuenschel
Keyword(s):  
Field Test ◽  
Signal To Noise Ratio ◽  
Experimental Studies ◽  
Seismic Energy ◽  
Reflection Seismology ◽  
Vertical Array ◽  
Signal To Noise ◽  
Near Surface ◽  
Vertical Arrays ◽  
Reflected Signal

There are several advantages in using vertical arrays for recording reflected signal. Signal‐to‐noise ratio can be controlled to any desired level when the noise is due to scattering from layers shallower than the depth to the array. By the use of vertical arrays, the band width of useable seismic energy can be increased, events can be properly identified, the signal that eventually produces near surface induced multiples can be measured, as well as the direct pulse radiated from the source and its accompanying ghosts. A field test documents these predictions.

3-D reconstruction and analysis of mammalian mitotic spindle structure

1992 ◽  
Vol 50 (1) ◽  
pp. 578-579
Author(s):  
Kent McDonald ◽  
David Mastronarde ◽  
Rubai Ding ◽  
Eileen O'Toole ◽  
J. Richard McIntosh
Keyword(s):  
Cross Sections ◽  
Mitotic Spindle ◽  
Experimental Studies ◽  
Video Camera ◽  
Three Dimensions ◽  
Mitotic Spindles ◽  
Black And White ◽  
Reconstruction Methods ◽  
Spindle Structure ◽  
Tissue Culture Line

Mammalian spindles are generally large and may contain over a thousand microtubules (MTs). For this reason they are difficult to reconstruct in three dimensions and many researchers have chosen to study the smaller and simpler spindles of lower eukaryotes. Nevertheless, the mammalian spindle is used for many experimental studies and it would be useful to know its detailed structure.We have been using serial cross sections and computer reconstruction methods to analyze MT distributions in mitotic spindles of PtK cells, a mammalian tissue culture line. Images from EM negatives are digtized on a light box by a Dage MTI video camera containing a black and white Saticon tube. The signal is digitized by a Parallax 1280 graphics device in a MicroVax III computer. Microtubules are digitized at a magnification such that each is 10-12 pixels in diameter.

Sign in / Sign up

Export Citation Format

Share Document