41 research outputs found

    Dependence of the emission from tris(8-hydroxyquinoline) aluminum based microcavity on device thickness and the emission layer position

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    In this work, we present a systematic study of the emission from bilayer organic microcavity light emitting diodes with two metal mirrors. The devices consisting of two organic layers, N,NV-di(naphthalene-1-yl)-N,NV-diphenylbenzidine as the hole transport layer and tris (8-hydroxyquinoline) aluminum as the emitting layer, and two metal mirrors were fabricated and characterized by transmittance, reflectance, photoluminescence, and electroluminescence measurements. The effects of layer thickness, interface position, and the choice of anode(bottom mirror) were investigated. The transmittance and reflectance spectra were modeled using a transfer matrix model, and the optical functions for all the materials used were determined by spectroscopic ellipsometry. The dependence of the photoluminescence and electroluminescence spectra on the device thickness and interface position is discussed

    The history of surgical teaching and the department of surgery

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    Annals of the Academy of Medicine Singapore346114C-120CAAMS

    Laparoscopic removal of fish bone

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    10.1097/00019509-199906000-00016Surgical Laparoscopy and Endoscopy93223-225SLEN

    Telesurgical laparoscopic cholecystectomy between two countries.

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    Surgical endoscopy14111085

    Intramuscular injection of parathyroid autografts is a viable option after total parathyroidectomy

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    10.1007/s00268-010-0531-3World Journal of Surgery3461332-1336WJSU

    Needlescopic retrograde cholecystectomy

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    10.1097/00019509-199806000-00016Surgical Laparoscopy and Endoscopy83237-238SLEN

    Benign duodenal tumors

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    Hepato-Gastroenterology47351298-1300HEGA
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