• Archives of Pharmacal Research
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• v.27 no.6
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• pp.593-599
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• 2004

From the EtOAc fraction of the MeOH extract of Albizzia julibrissin (Leguminosae）, a rare 5-deoxyflavone (geraldone, 1）, isookanin (2）, luteolin (3）, an isoflavone (daidzein, 4）, five prenylated flavonoids ［soph6f1avescenol (5）, kurarinone (6）, kurarinol (7）, kuraridin (8） and kuraridinol (9）］, a cerebroside (soya-cerebroside I, 10）, and $(-)-syringaresinol-4-O-{\beta}-D-glucopyranoside$ (11） were isolated and characterized on the basis of spectral data. Compounds 2, 3, and 11, showed 1, 1-diphenyl-2-picrylhydrazyl radical scavenging activity.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.40 no.6
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• pp.313-315
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• 2014

An oral foregut cyst is a rare congenital choristoma lined by the respiratory and/or gastrointestinal epithelium. The exact etiology has not been fully identified, but it is thought to arise from misplaced primitive foregut. This lesion develops asymptomatically but sometimes causes difficulty in swallowing and pronunciation depending on its size. Thus, the first choice of treatment is surgical excision. Surgeons associated with head and neck pathology should include the oral foregut cyst in the differential diagnosis for ranula, dermoid cyst, thyroglossal duct cyst and lymphangioma in cases of pediatric head and neck lesions.

• Journal of the Optical Society of Korea
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• v.6 no.2
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• pp.27-32
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• 2002

An integrated optical 2$\times$2 add/drop multiplexer in X-cut, Y-propagating LiNbO$_3$ has been demonstrated. The device consists of passive polarization splitters and acousto-optical mode converters with weighted coupling utilizing tapered acoustical directional couplers; their specific design and properties are discussed. The insertion loss has been measured to be about -8.16 ㏈ and -8.6 ㏈ for TE and TM polarizations, respectively. The device shows a 3 ㏈ bandwidth of 2.3 nm, a tuning rate 8.34 nm/MHz around λ = 1554 nm, and a sidelobe suppression of about 14.5 ㏈. Optimum operation is achieved with a RF drive power of about 43 ㎽. Multi-wavelength operation has been demonstrated.

• Journal of Sasang Constitutional Medicine
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• v.36 no.1
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• pp.1-12
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• 2024

Purpose To investigate the impact of Nosa Ki Jung-jin on the development of Sasang Constitutional Medicine by Dongmu Lee Je-ma. Objectives and Methods To establish the correlation between Nosa and Dongmu through an analysis of 『Nosajip(蘆沙集)』 and 『Nosaseonsaengyeonwonrok(盧沙先生淵源錄)』. Conclusion 1. While it is not definitive to assert that Lee Mupyeong, referenced in the 'SongLeemupyeongBukgwiseo(送李務平北歸序)' of 『Nosajip』, is Dongmu, there exists a strong probability that he is indeed Dongmu. 2. Dongmu Lee Je-ma's name does not appear among the disciples listed in 『Nosaseonsaengyeonwonrok』, and the 'SongLeemupyeongBukgwiseo' is only found in the third edition of 『Nosajip』. 3. It is challenging to attribute Dongmu's development of Sasang Constitutional Medicine solely to his exposure to Nosa's teachings during his youth.

• Applied Microscopy
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• v.48 no.4
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• pp.87-95
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• 2018

Immunoelectron microscopy using an antigen-antibody reaction in an electron microscope is a very useful tool to identify the components of a tissue in an electron microscope. Many researchers also use immunoelectron microscopy. Nonetheless, immunoelectron microscopy is rarely introduced systematically, and immunoelectron microscopy can be carried out without fully understanding the principles, and cases of poor understanding can often be seen in the vicinity. Therefore, in order to make it easier to understand, we will first introduce the principles of immunoelectron microscopy and describe practical methods.

• Proceedings of the KIEE Conference
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• 2011.07a
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• pp.1748-1749
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• 2011

본 논문에서는 최근 전기자동차의 개발과 동시에 연구가 활발히 진행되고 있는 전기자동차의 충전시스템인 EVSE(Electric Vehicle Supply Equipment) 시뮬레이터를 구현하고 성능을 검증한다. EVSE는 전기자동차의 충전을 위해 안정적인 전원을 공급하는 기능 이외에도, 충전상태 모니터링, 인증 및 과금 등의 기능이 요구되기 때문에 전기자동차와의 통신이 필수적이다. 따라서 CAN 기반의 전기자동차 충전시스템 시뮬레이터를 구현하고, 제안된 충전 절차에 따른 실험을 통해 차량 인증, 차량 정보 확인 및 모니터링 프로그램의 성능을 검증한다.

• Proceedings of the KIEE Conference
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• 2011.07a
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• pp.488-489
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• 2011

This technical reports describes KEPCO's PLC technology and PLC AMI projects. KEPCO has developed PLC and PLC convergence technology. KEPCO's BPL(Broadband over PLC) standard was selected as an IEC International Standard (IEC 12139-1) in 2009. KEPCO conducted a project installing 550,000 smart meters to residential customers finishing in 2010. KEPCO will carry out a PLC-AMI project around country until 2020, as well as many pilot projects to test its PLC convergence technology.

• Proceedings of the Korea Institute of Applied Superconductivity and Cryogenics Conference
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• 1999.02a
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• pp.65-68
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• 1999

The major deisng parameters that are considered in this paper are: 1) EMF according to width of field coil. 2) EMF according to magnetic shield length. Because of superconducting generator (SG) is actually and air cored machine with its rotor iron and stator iron teeth having been removed. In this case, the desing of the SG must be based on the 3D analysis of the magnetic field. This study presents an effective armature winding type with 3D FEM(Finite Element Method), and compares analyzed and measured results.

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.12 no.5
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• pp.170-175
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• 2013

For this study, the domestically developed bootstrap reservoir of the aircraft is set up in accordance with the temperature and humidity conditions depicted on the qualification test, and the variation in the internal pressure of the bootstrap reservoir of the aircraft is examined. The study shows that the bootstrap reservoir has less variation in the internal pressure at room temperature than at low temperature($-40^{\circ}C$). As a result, the internal pressure can be maintained stably when the temperature of working fluid in the bootstrap reservoir and the atmosphere environment is over room temperature($25^{\circ}C$). Therefore the keeping of temperature above room temperature is very important to operate the bootstrap reservoir of the aircraft properly.

• Korea Journal of Hospital Management
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• v.2 no.1
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• pp.22-47
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• 1997

This paper evaluated the relative efficiency of 33 provincial medical centers using Data Envelopment Analysis(DEA) and compared the DEA efficiency results with those of the current method conducted by the management evaluation team. DEA Was selected as an alternative efficiency evaluation method since it could handle multiple inputs and multiple outputs simultaneously and identify the sources of inefficiency. To analyze the sensitivity of productivity values to the variable sets, four different sets of input and output variables were identified. Results showed that most of the medical centers are operating far away from the efficiency frontier supporting the previous results. Some centers showed 100% efficiency regardless of the selected variable sets. DEA results are compared with current management evaluation results. Some inconsistencies were found for some DMUs between the results of two methods showing the existence of methodology bias. DEA results and ratio analyses results mostly agree for 1992 data.