• Title/Summary/Keyword: Hanyang Park

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Effects of oxygen additive on structural properties and metal/diamond junction characteristics of nano-crystalline diamond thin films (산소첨가가 나노결정 다이아몬드 박막의 구조적 물성 및 금속과의 접합특성에 미치는 영향)

  • Choi, Sung-Ho;Park, Jae-Hyun;Park, Chang-Kyun;Park, Jin-Seok
    • Proceedings of the KIEE Conference
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    • 2004.07c
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    • pp.1700-1702
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    • 2004

  • Diamond films including nanocrystallites are grown by microwave plasma chemical vapor deposition using $O_2$ additives and negative substrate bias at growth step. Effects of growth parameters on film properties are characterized by Raman spectra, SEM, and AFM images. It is found that the surface roughness and the microstructure of grown films can be controlled by changing $O_2$ gas ratio. The I-V characteristics are also investigated in terms of growth conditions of diamond films. The surface roughness and the $sp^2$ phase of the grown diamond films turn out to be crucial factors for reducing leakage currents at diamond/metal interfaces.

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Leiomyosarcoma Mimicking Superficial Cystic Soft Tissue Mass Confusing Diagnosis On Ultrasonography - A Case Report - (초음파 진단 시 혼란을 초래할 수 있는 연부 조직 종양 - 1례 보고 -)

  • Park, Tae-Soo;Kim, Sungjun;Park, Hwon-Kyum;Park, Yong-Wook;Seo, Seung-Pyo
    • The Journal of Korean Orthopaedic Ultrasound Society
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    • v.2 no.2
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    • pp.90-93
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    • 2009

  • In spite of many advantages of the ultrasonography (USG), sometimes its features such as echotexture and homogenecity do not reliably distinguish between malignant tumors and benign ones, so caution is needed in making a diagnosis of solid masses of the soft tissue with USG.

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The Study on the drug pharmacokinetics according to the progression of liver disease

  • Sohn, Soo-Jung;Choi, Hong-Serck;Ahn, Mee-Ryung;Chung, Hye-Joo;Yoo, Tae-Moo;Lee, Min-Ho;Park, Moon-Seung;Shin, In-Chul;Kim, Ju-ll
    • Proceedings of the PSK Conference
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    • 2003.04a
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    • pp.308.1-308.1
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    • 2003

  • We underwent this study to know correlation between the amount of portosysternic shunt/hepatic fibrosis and bioavailability parameters such as AUC, Cmax, Tmax and t1 /2 of high extraction ratio drug, propranolol, in CCl4-induced liver cirrhosis model of rats. This study describes the bioavaility study of propranolol(5 mg/kg), Shunt Index using thallium-201 per rectum scintigraphy to to measure the amount of portosystemic shunt indirectly and intrahepatic hydroxyproline content performed in the CCl4-induced liver cirrhosis model of rats. (omitted)

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