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이수형,이민수,고두민,임재현,김대용,박영우 한국임상수의학회 2015 한국임상수의학회지 Vol.32 No.1
A 14-year-old, male Shih-tzu was presented with glaucoma in the left eye. Menace response was negative in the left eye. On ophthalmic examination, exotropia, buphthalmos, bulging of upper lateral globe and episcleral injection was detected in the left eye. Also, there was corneal edema, corneal pigmentation and hyphema in the left eye. The pupil was difficult to observe due to corneal lesions in the left eye. On ultrasonographic examination, an amorphous large mass protruding from the region of the optic disc into the vitreous was observed in the left eye. Enucleation was performed in the left eye. Histologically, the left intraocular mass was diagnosed as glioma. Immunohistochemically, the neoplastic cells were positive to glial fibrillary acidic protein.
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이수형,Kyu Chul Heo,남기석,김필 한국공업화학회 2011 Journal of Industrial and Engineering Chemistry Vol.17 No.2
Nitrogen-containing non-noble metal catalysts for oxygen reduction reaction (ORR) are prepared by supporting 2,20-bipyridine iron complex on polypyrrole-coated carbon support followed by pyrolysis at various temperatures (600, 700, 850, and 1000 8C). The prepared catalysts and support are characterized by IR, elementary analysis, TEM, and XPS. Revealed is that the contents of pyridinic nitrogen on a catalyst would not be a determining factor for ORR activity. The concentration of pyridinic nitrogen diminishes with the increasing pyrolysis temperature, while the ORR performance is observed to be enhanced with a maximum at 850 8C. It is believed that the pyridinic nitrogen added as a precursor should be activated to serve as an active site for ORR, indicating that an increasing pyrolysis temperature is favored to form a highly active site. However, the pyrolysis at too high of temperature (1000 8C) turns out to be undesirable due to a considerable loss of active nitrogen.
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