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Light extraction enhancement of InGaN light-emitting diode by roughening both undoped micropillar-structure GaN and p-GaN as well as employing an omnidirectional reflector
Ray-Hua Horng, Xinhe Zheng, Chuang-Yu Hsieh, and Dong-Sing Wuu
Light extraction enhancement of InGaNGaN light-emitting diode (LED) is demonstrated with double-side roughening both on the p-GaN surface and the micropillar undoped GaN as well as an omnidirectional reflector via patterning sapphire substrate, wafer-bonding, laser lift-off, and chemical wet etching ... [Appl. Phys. Lett. 93, 021125 (2008)] published Fri Jul 18, 2008.
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Control of surface plasmon resonances in dielectrically coated proximate gold nanoparticles immobilized on a substrate
Author(s): Patrick Rooney, Asad Rezaee, Songbo Xu, Touraj Manifar, Abdollah Hassanzadeh, Ganna Podoprygorina, Volker Böhmer, Chitra Rangan, and Silvia Mittler
We present experimental and theoretical results for the changes in the optical-plasmon resonance of gold-nanoparticle dimers immobilized on a surface when coated with an organic dielectric material. The plasmon band of a nanoparticle dimer shifts to a higher wavelength when the distance between neig...
[Phys. Rev. B 77, 235446] Published Mon Jun 30, 2008
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Portland State Giving | Big Results: Murdock Trust Helps Install World ...
Giving at Portland State: Portland State University's Office of University Development. ... Big Results: Murdock Trust Helps Install World-Class Microscope. The technology of the ...
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Acute cerebral paragonimiasis presenting as hemorrhagic stroke in a child.
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Acute cerebral paragonimiasis presenting as hemorrhagic stroke in a child.

Pediatr Neurol. 2008 Aug;39(2):133-6

Authors: Chen Z, Zhu G, Lin J, Wu N, Feng H

A hemorrhagic stroke in children is rarely secondary to cerebral paragonimiasis. We describe a 9-year-old boy in whom an intracerebral hemorrhage was the leading clinical indication of acute cerebral paragonimiasis. He was hospitalized because of a sudden onset of headache, right hemiparesis, and dysarthria. A computed tomography scan revealed an intracerebral hemorrhage in the left parietal lobe. Magnetic resonance angiography did not confirm any vascular abnormalities at the location of the hematoma. Four weeks later, he presented with right hemiparesis again, and fever. A diagnosis of cerebral paragonimiasis was based on repeated magnetic resonance imaging of the brain and an enzyme-linked immunosorbent assay for paragonimiasis. The patient gradually recovered with praziquantel treatment. Cerebral paragonimiasis should be considered in the differential diagnosis of hemorrhagic strokes in children in areas where paragonimiasis is epidemic.

PMID: 18639761 [PubMed - in process]

(Source: Pediatric Neurology)
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