scholarly journals Time-scale detection of microemboli in flowing blood with Doppler ultrasound

1999 ◽  
Vol 46 (9) ◽  
pp. 1081-1089 ◽  
Author(s):  
B.S. Krongold ◽  
A.M. Sayeed ◽  
M.A. Moehring ◽  
J.A. Ritcey ◽  
M.P. Spencer ◽  
...  
Keyword(s):  
Doppler Ultrasound ◽  
Time Scale ◽  
Flowing Blood ◽  
Scale Detection

Quadratic time-scale detection of microemboli in flowing blood with Doppler ultrasound

1997 ◽  
Author(s):  
Brian S. Krongold ◽  
Akbar M. Sayeed ◽  
Mark Moehring ◽  
James A. Ritcey ◽  
M. Spencer ◽  
...  
Keyword(s):  
Doppler Ultrasound ◽  
Time Scale ◽  
Flowing Blood ◽  
Scale Detection

scholarly journals A Real-Time Scale Detection System Based on Synchronous Addition and Subtraction Processing

1999 ◽  
Vol 35 (9) ◽  
pp. 1183-1190
Author(s):  
Tsutomu SAITO ◽  
Shigeru KOBAYASHI ◽  
Miori OZAWA ◽  
Miho WADAMORI ◽  
Yoshiaki TADOKORO
Keyword(s):  
Real Time ◽  
Time Scale ◽  
Detection System ◽  
Real Time Scale ◽  
Addition And Subtraction ◽  
Scale Detection

Time-scale removal of "wall thump" in Doppler ultrasound signals: a simulation study

2004 ◽  
Vol 51 (9) ◽  
pp. 1187-1192 ◽  
Author(s):  
Yu Zhang ◽  
J.C. Cardoso ◽  
Yuanyuan Wang ◽  
P.J. Fish ◽  
C.A.C. Bastos ◽  
...  
Keyword(s):  
Doppler Ultrasound ◽  
Simulation Study ◽  
Time Scale ◽  
Scale Removal ◽  
Ultrasound Signals

scholarly journals Low-Cost Optodiagnostic for Minute-Time Scale Detection of SARS-CoV-2

ACS Nano ◽  
2021 ◽  
Author(s):  
André Lopes Ferreira ◽  
Lucas Felipe de Lima ◽  
Marcelo Der Torossian Torres ◽  
William Reis de Araujo ◽  
Cesar de la Fuente-Nunez
Keyword(s):  
Time Scale ◽  
Low Cost ◽  
Scale Detection

Large-scale Motion of Solar Filaments

2000 ◽  
Vol 179 ◽  
pp. 205-208
Author(s):  
Pavel Ambrož ◽  
Alfred Schroll
Keyword(s):  
Magnetic Flux ◽  
Proper Motion ◽  
Time Scale ◽  
Large Scale ◽  
Accuracy Of Measurements ◽  
Solar Filaments ◽  
General Movement ◽  
Scale Motion ◽  
Velocity Scatter

AbstractPrecise measurements of heliographic position of solar filaments were used for determination of the proper motion of solar filaments on the time-scale of days. The filaments have a tendency to make a shaking or waving of the external structure and to make a general movement of whole filament body, coinciding with the transport of the magnetic flux in the photosphere. The velocity scatter of individual measured points is about one order higher than the accuracy of measurements.

The E-ring: interactions with plasma and implications for its evolution

1984 ◽  
Vol 75 ◽  
pp. 599-602
Author(s):  
T.V. Johnson ◽  
G.E. Morfill ◽  
E. Grun
Keyword(s):  
Time Scale ◽  
Particle Density ◽  
High Energy ◽  
Particle Removal ◽  
Density Region ◽  
Drag Forces ◽  
Orbit Evolution ◽  
History Of ◽  
Ring Particle ◽  
Ring Material

A number of lines of evidence suggest that the particles making up the E-ring are small, on the order of a few microns or less in size (Terrile and Tokunaga, 1980, BAAS; Pang et al., 1982 Saturn meeting; Tucson, AZ). This suggests that a variety of electromagnetic and plasma affects may be important in considering the history of such particles. We have shown (Morfill et al., 1982, J. Geophys. Res., in press) that plasma drags forces from the corotating plasma will rapidly evolve E-ring particle orbits to increasing distance from Saturn until a point is reached where radiation drag forces acting to decrease orbital radius balance this outward acceleration. This occurs at approximately Rhea's orbit, although the exact value is subject to many uncertainties. The time scale for plasma drag to move particles from Enceladus' orbit to the outer E-ring is ~104yr. A variety of effects also act to remove particles, primarily sputtering by both high energy charged particles (Cheng et al., 1982, J. Geophys. Res., in press) and corotating plasma (Morfill et al., 1982). The time scale for sputtering away one micron particles is also short, 102 - 10 yrs. Thus the detailed particle density profile in the E-ring is set by a competition between orbit evolution and particle removal. The high density region near Enceladus' orbit may result from the sputtering yeild of corotating ions being less than unity at this radius (e.g. Eviatar et al., 1982, Saturn meeting). In any case, an active source of E-ring material is required if the feature is not very ephemeral - Enceladus itself, with its geologically recent surface, appears still to be the best candidate for the ultimate source of E-ring material.

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