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Oral Malignant Melanoma in a Labrador Retriever
Ji-YunLee,Sang-YoenOh,Dae-YoungKim,ChulPark,Hun-YoungYoon,Soon-WukJeong,Hee-MyungPark 한국임상수의학회 2003 한국임상수의학회지 Vol.20 No.4
A 12-year-old, intact male Labrador Retriever was admitted to the Veterinary Teaching Hospital of Konkuk University for the evaluation of bleeding mass in the oral cavity. The mass was first noted 2 years ago and has been growing up to a size of 5×6cm. On complete blood count(CBC), leukocytosis and mild anemia were observed. Pulmonary metastasis was found in the thoracic radiographic examination. Blackish necrotic oral mass at the left mandibular area was diagnosed as a malignant melanoma based on the histopathological examination. Thus hemimadi-bulectomy and chemotherapy (carboplatin) were performed. The patient eventually died due to severe secondary infection 3 months after the last treatment.
Fabrication and Characteristics of Amorphous Carbon Films for Field Emission Display Applications
Kyung-JeaCho,Sang-YunLee 한국물리학회 2002 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.40 No.2
Amorphous carbon (a-C) lms, as electron eld emitters, were fabricated by using radio-frequency magnetron sputtering. These a-C thin lms were deposited on P-doped n-type Si(001) substrates at several temperatures. The eld emission properties of these a-C thin lms were estimated by using a diode technique. As the result, we observed that the eld emission properties of the films changed significantly with the substrate temperature and the structural features of the a-C film. The eld emission properties were promoted by higher substrate temperatures. Futhermore, Ndoped a-C lms exhibited better field emission properties than did undoped a-C lm. These results are explained by changes in the structural properties and the surface morphology of the a-C films.
Fabrication of Field-Emitter Arrays using the Mold Method for FED Applications
Kyung-JeaCho,Jeong-TakRyu,Yeon-BoKim,Sang-YunLee 한국전기전자재료학회 2002 Transactions on Electrical and Electronic Material Vol.3 No.1
The typical mold method for FED fabrication is used to form a gate electrode, a gate oxide layer, and emitter tip after fabrication of a mold shape using wet-etching of Si substrate. However, in this study, new mold method using a side wall space structure was developed to make sharp emitter tips with the gate electrode. In new method, gate oxide layer and gate electrode layer were deposited on a Si wafer by LPCVD(low pressure chemical vapor deposition), and then BPSG(Boro phospher silicate glass) thin film was deposited. After then, the BPSG thin film was flowed into the mold at high temperature in order to form a sharp mold structure. TiN was deposited as an emitter tip on it. The unfinished device was bonded to a glass substrate by anodic bonding techniques. The Si wafer was etched from backside by KOH-deionized water solution. Finally, the sharp field emitter array with gate electrode on the glass substrate was formed.
Jae-KeunLee ( 이재근 ),Young-HoJung ( 정영호 ),Seung-YunLee ( 이승연 ),Kyu-TaeCho ( 조규태 ),Sang-HunLee ( 이상훈 ),Young-HanYou ( 유영한 ) 한국환경생태학회 2017 한국환경생태학회 학술대회지 Vol.2017 No.2
This study investigated growth response of Korean exotic woody plants Acer saccharinum L. and Amorpha fruticosa L., on the climate change. We also examined the growth on nitrogen treatment of them. Acer saccharinum L. and Amorpha fruticosa L. were sown in March 2014 and then transplanted to each environment conditions in May 2015. Atmospheric conditions were divided into the outdoor environment treatment(AC-AT), the temperature elevation treatment(AC-ET), and the climate change treatment (EC-ET). In each atmospheric condition, non-treated (Control; C) pots were placed without nitrogen fertilizer treatment. Acer saccharinum L. treated 2g (N1), 20g (N2) of nitrogen fertilizer, respectively. And Amorpha fruticosa L. treated 1g (N1), 5g (N2) of nitrogen fertilizer, respectively. After the adaptation to each environmental condition until October 2016, the length, diameter of stem-root border, aboveground biomass, underground biomass, and leaves weight of Acer saccharinum L. and Amorpha fruticosa L. were measured. The above results show that Acer saccharinum L. was affected the length of shoot under conditions of increased temperature. Amorpha fruticosaL. means that When the nitrogen increases under the condition that the temperature and the CO<sub>2</sub> concentration are increased together, the length of shoot and the Diameter of stem-root increase, but the Underground biomass decrease.
Growth Characterization of Carbon Nanotubes by Using Optical Interference Oscillations Phenomena
Do-HyungKim,장훈식,Chang-DukKim,Dong-SooCho,Hee-DongKang,Sang-YunLee,Hyeong-RagLee 한국물리학회 2002 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.41 No.5
Various characteristics of the growth of carbon nanotubes (CNTs) were examined by using in-situ optical interference patterns. A dc plasma chemical vapor deposition technique was used to grow the CNTs. Significant interference oscillations were seen during the growth of CNTs. The light absorption in CNTs exponentially decayed with increasing CNT length. From the optical interference curves, the growth rate and the termination length of the CNTs were precisely estimated. The optical interference curves provided considerable in-situ information, such as the length, the alignment, and the related growth properties of the CNTs.