Results 171 to 180 of about 2,940 (206)

Dotted pearl micropulsations

Journal of Geophysical Research, 1968
Spectrograms of pearl (Pc 1) micropulsations show dotted rising tones. It is suggested here that the dot structure is due to interference between the two components of a double tone or ‘hook.’ The observed dot structure could be produced by a nonconvective cyclotron instability of protons of about 100-kev energy and 60° pitch angle.
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Subthreshold Diode Micropulse Laser: A Review

Seminars in Ophthalmology, 2016
The subthreshold diode micropulse laser is a form of non-damaging thermal laser therapy which has shown efficacy in multiple retinal conditions. The purpose of this article is to review the use of subthreshold diode micropulse laser as an emerging treatment modality for the treatment of retinal disease.
Hilary S, Brader, Lucy H Y, Young
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Micropulse Transscleral Cyclophotocoagulation in Keratoplasty Eyes

Cornea, 2019
Purpose: To assess the outcomes of micropulse transscleral cyclophotocoagulation for intraocular pressure (IOP) control in keratoplasty eyes. Methods: Outcomes of micropulse laser treatments of postkeratoplasty eyes were retrospectively reviewed.
Kavitha, Subramaniam, Marianne O, Price, Matthew T, Feng, Francis W, Price   +3 more
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Piezoelectric stapedotomy: the importance of a micropulse program

Acta Oto-Laryngologica, 2010
We can consider the micropulse program as the best level of safety that should be used in all cases of piezoelectric stapedotomy.The aim of this study was to describe the importance of a micropulse program in determining the success of piezoelectric stapedotomy.A total of 112 patients (group A) affected by primary otosclerosis underwent piezoelectric ...
Salami A, Mora R, Crippa B, Dellepiane M, GUASTINI, LUCA   +4 more
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Studies in geomagnetic micropulsations.

1969
Geldart, L. (Supervisor)
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Micropulsation activity at Lerwick

Journal of Atmospheric and Terrestrial Physics, 1968
Abstract A handscaled analysis of micropulsation activity at Lerwick Observatory has been carried out which shows some agreement with previous handscaled work using different equipment. Day and nighttime activity are confirmed to occupy essentially different period ranges, and a correlation of Pi activity with acceptable auroral zone current models ...
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Micropulsations and the Diagnostics of the Magnetosphere

1970
Experimental and theoretical research indicates that short-period geomagnetic micropulsations are a sensitive indirect means of determining changes in the state of the upper atmosphere. L.R. O. Storey (1953) found that the space between the outer boundary of the magnetic field and the ionosphere is filled with plasma so that any disturbance reaching ...
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The Morphology of Geomagnetic Micropulsations

1970
Geomagnetic micropulsations are fluctuations of the Earth’s magnetic field whose amplitudes range from a fraction of a gamma to, on rare occasions, as much as a few tens of gammas. Periods range from about 0.1 sec to 10 min. Most work has been done in the lower frequency end of this range, very little being known at the higher frequencies from 3 to 10 ...
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Subthreshold and micropulse diode laser photocoagulation

Seminars in Ophthalmology, 2003
Retinal laser photocoagulation is a proven, effective treatment for various retinal disorders. Common clinical protocols use intra-operatively visible endpoints that cause iatrogenic chorioretinal damage. For this reason, laser therapy is normally limited to levels of disease severity for which the benefit-to-risk ratio justifies its application.
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Micropulsation whistlers

Journal of Atmospheric and Terrestrial Physics, 1964
J.A. Jacobs, T. Watanabe
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