Results 241 to 250 of about 10,001,585 (299)
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Comparison of High-Field-Strength Versus Low-Field-Strength MRI of the Shoulder
American Journal of Roentgenology, 2003Previous studies have reported similar results of shoulder MRI versus arthroscopy for high-field-strength (1.5-T) and low-field-strength (0.2-T) units. We report our experience with the accuracy of high- versus low-field-strength units versus arthroscopy for detection of supraspinatus tendon tears and labral tears in the same patients.
Thomas, Magee +2 more
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2000
We rewrite Eqs.(2.1-45) and (2.1-60) in normalized form for the derivation of the associated magnetic field strength. First we get with the help of Eqs.(2.1-32) and (2.1-48): $$\begin{array}{*{20}{c}} {\frac{{{{\tau }_{{1m}}}{{\tau }_{{2m}}}}}{{{{\tau }_{{2m}}} - {{\tau }_{{1m}}}}} = - \frac{{{{\tau }_{{mp}}}}}{{{{{\left( {1 - 8\alpha '{{\tau }_ ...
Henning F. Harmuth, Konstantin A. Lukin
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We rewrite Eqs.(2.1-45) and (2.1-60) in normalized form for the derivation of the associated magnetic field strength. First we get with the help of Eqs.(2.1-32) and (2.1-48): $$\begin{array}{*{20}{c}} {\frac{{{{\tau }_{{1m}}}{{\tau }_{{2m}}}}}{{{{\tau }_{{2m}}} - {{\tau }_{{1m}}}}} = - \frac{{{{\tau }_{{mp}}}}}{{{{{\left( {1 - 8\alpha '{{\tau }_ ...
Henning F. Harmuth, Konstantin A. Lukin
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On the strength of a gravitational field
Physics Letters A, 1992Abstract The notion of gravitational field strength is critically examined in this paper within the framework of the general theory of relativity. It is shown that this concept is strongly observer dependent in close analogy with electromagnetism.
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Field-dependent coupling strength for scalar fields
Zeitschrift f�r Physik A Hadrons and Nuclei, 1991Effective Lagrangians with a nonlinear coupling between the scalar density of the nucleons and the scalar meson field are investigated within the framework of relativistic mean-field theories. This phenomenological coupling acts as a field-dependent coupling strength and is supposed to take into account renormalization effects within a mean-field ...
H. Feldmeier, J. Lindner
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High-Field Strength Functional MRI
2006The use of high magnetic field strength fMRI units has the potential for improving considerably the sensitivity and specificity of functional studies. As a result of the high-field studies, fundamental neural dynamics taking place at a very small dimensional scale in specific laminar, columnar and multicolumnar domains have become directly visible. The
DI SALLE F +8 more
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Measurement of Field Strength Attenuation in the Near Field
1966 Symposium Digest: 8th National Symposium on Electromagnetic Compatibility, 1966The problem of predicting the relationship of the electric and magnetic field components i n the near field t o those i n the far field i s of particular interest in RFI investigations. The authors have recently had the opportunity to make experimental measurements of the rate of attenuation of electric and magnetic fields from the near to the far ...
W. C. Dolle, W. E. Cory
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Minimum Field Strength in Precessional Magnetization Reversal
Science, 1999Ultrafast magnetic field pulses as short as 2 picoseconds are able to reverse the magnetization in thin, in-plane, magnetized cobalt films. The field pulses are applied in the plane of the film, and their direction encompasses all angles with the magnetization. At a right angle to the magnetization, maximum torque is exerted on the spins.
Back CH +6 more
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Field-strength measurements on Daventry 5XX
Institution of Electrical Engineers - Proceedings of the Wireless Section of the Institution, 1931The paper describes a series of measurements made in different parts of Southern England on the transmissions from Daventry 5XX. An intensive survey of Cornwall indicated a rapid attenuation of field stength on crossing Bodmin Moor. Beyond this area, symmetrical contours were observe. Their existence is attributed to the large, irregualarly shaped moor,
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