Filters: Date: "1988-07" Collection: ir_uspace
1 - 25 of 3
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 1 |
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Digre, Kathleen B. | CT and hemifacial spasm. | Forty-six patients with typical hemifacial spasm had CT. Thirty-eight (83%) were abnormal, including two with surgically documented tumors. Thirty-six had a characteristic dolichoectatic vertebrobasilar artery, with the convexity pointing to the side of the spasm in 92% of the scans. This study sugg... | Hemifacial spasms; Tumors; Dolichoectiatic vertebrobasilar artery | 1988-07 |
| 2 |
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Mattis, Daniel C. | Ground-state energy of Heisenberg antiferromagnet for spins s=1/2 and s=1 in d=1 and 2 dimensions | A simple real-space renormalization method yields the ground-state energy of the Heisenberg antiferromagnet. We find the ground-state energy per spin for s=1/2 (-0.4438 in ID , -0.6723 in 2D ) and s = 1 (-1.388 in ID and -1.907 in 2D) to three-figure accuracy, using properties of relatively small o... | Ground-state energy; Heisenberg antiferromagnet; Long-range order | 1988-07 |
| 3 |
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Vardeny, Zeev Valentine | Transient-photomodulation-spectroscopy studies of carrier thermalization and recombination in α-Si:H | The transient response of mid-gap absorption in a-Si:H to pulsed optical excitation is studied as a function of time (300 ns to 30 ms) and sample temperature (10-220 K) with use of probe wavelengths ranging from 0.75 to 5.5 fim. A numerical inversion process applied to the data gives the distributio... | Amorphous silicon; a-Si:H; Transient-photomodulation-spectroscopy; Carrier thermalization; Carrier recombination; Pulsed optical excitation | 1988-07 |
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