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중전기기용 Epoxy/SiO<sub>2</sub> 나노복합재료의 유전분산 연구
안준호,박재준,Ahn, Joon-Ho,Park, Jae-Jun 한국전기전자재료학회 2007 전기전자재료학회논문지 Vol.20 No.4
Recently, Nanotechnology becomes a major issue in most part of industries. Nanotechnology is expected to develop various application products due to nano material mired composites is improved physical and electrical properties compared to conventional composites materials. Dielectric and insulation materials need to develop and improve like other field about nanotechnology. In this paper, we reported dielectric dispersion by size(no filler, $1.2{\mu}m$, 500 nm, 10 nm), frequencies(60, 120, 1 kHz), and temperatures($30{\sim}170^{\circ}C$). Dielectric constant of composites materials with filler shows higher than composites materials without filler and increased depending on rising temperatures in low frequency region. It was the effect that nano-filler and impurities in composites contributed to electrical conductivity. And dielectric properties depending on temperatures shows to change in low frequency region dramatically We analyzed interfacial polarization in low frequency region($10^{-2}$ Hz) and oriented polarization in high frequency region($10^{-5{\sim}6}$ Hz) on composites materials.
효경당계축문(孝敬當啓築文)에 의한 파평윤씨(坡平尹氏) 서윤공파(庶尹公派) 고택(古宅)의 원형(原形) 고찰(考察)
안준호,이희준,이달훈,Ahn, Joon-Ho,Lee, Hee-Jun,Lee, Dal-Hoon 한국주거학회 2007 한국주거학회 논문집 Vol.18 No.2
This study is to investigate the contents and status of documentary records based on "Hyogyeongdang Gyechukmun" related to the Old House of Papyeong Yun's family. This house is located in Goegok-dong, Daejeon Metropolitan city, and is considered as one of the high-class houses in the mid-Chosun dynasty. The results might be summarized as follows: First, Hyogyeongdang Gyechukmun was written by Yun Seom in 1675 (the 1st year of King Sukjong's reign), which is a kind of general drawing book containing a plane figure and a bird's-eye-view of the old house. It is an important historical record to identify the feature and characteristics of the high-class houses in those days. Second, Papyeong Yun's Old House was founded with five buildings including a shrine, women's quarters, Hyogyeongdang, servants' quarters, and a warehouse. On the southern front, there used to be a pond. Third, the standard measure used to build the old house was about 310.00/尺(chuck). Chuck(尺) is the measuring unit of the Chosun Dynasty.
안준호 ( Joon Ho Ahn ),홍영준 ( Young Joon Hong ) 대한내과학회 2021 대한내과학회지 Vol.96 No.3
Stable angina is a chronic, systemic disease with a wide range of associated symptoms and clinical outcomes. Prompt diagnosis can be challenging for clinicians. Typical chest pain caused by stable angina occurs when the myocardium receives inadequate oxygen, resulting in myocardial ischemia. Various diagnostic tools including non-invasive tests such as coronary computed tomographic angiography and image-based stress tests have evolved over the last decade. An important factor in the selection of the proper diagnostic test for stable angina is assessment of the pre-test probability in the event of possible coronary arterial stenosis. (Korean J Med 2021;96:218-224)
이호식,안준호,김우연,이원재,Lee, Ho-Shik,Ahn, Joon-Ho,Kim, Woo-Yeon,Iwamoto, M.,Lee, Won-Jae 한국전기전자재료학회 2006 전기전자재료학회논문지 Vol.19 No.12
Maxwell-displacement-current (MDC) measuring technique has been applied for the investigation of monolayers of poly(vinyl alcohol)s bearing azobenzene side-chains (6Az5PVA) mixed with p-pentyl-p'-cyano-biphenyls (5CBs) on a water surface. For mixed monolayers containing trans-form 6Az5PVA and LCs, displacement current due to photo isomerization was not generated with alternative photo-irradiation with UV and svisible light. In contrast, for mixed monolaters containing cis-form 6Az5PVA and LCs, displacement current was generated. Finally, it was found that the alignment layers deposited in cis-form could photoregualte the orientation of LCs.
후천성면역결핍증후군(Acquired Immune Deficiency Syndrome ; AIDS) 환자의 정신질환 유병률과 심리사회적 적응
박휘준,홍진표,우준희,안준호,Park, Hwi-Jun,Hong, Jin-Pyo,Woo, Jun-Hee,Ahn, Joon-Ho 대한불안의학회 2009 대한불안의학회지 Vol.5 No.2
Objectives : We examined quality of life, psychosocial adjustments to illness, changes in sexual functioning, and prevalence of psychiatric disorders in AIDS patients compared to patients with chronic hepatitis B virus infection (CHB). Methods : Thirty-one men with AIDS and 50 men with CHB were enrolled. The Short-Form 12-Item Health Survey (SF-12), the Psychosocial Adjustment to Illness Scale (PAIS), and the Changes in Sexual Functioning Questionnaire short form (CSFQ-14) were administered. Results on these assessments were compared between the 31 AIDS patients and 50 CHB patients. The Structured Clinical Interview for DSMIV (SCID) was administered to determine the psychiatric diagnosis only for the AIDS patients. Results : The Physical Component Summary score (PCS) was lower in AIDS patients than in CHB patients (p<0.001). In the section examining sexual relationships, AIDS patients exhibited a lower level of adjustment (p<0.05) and had more changes in sexual function (p<0.05) than did CHB patients. Administration of the SCID to AIDS patients indicated that the lifetime prevalence of any psychiatric disorder was 56.7% ; 43.3% for mood disorders, 33.3% for alcohol use disorders, 26.7% for anxiety disorders, and 20% for adjustment disorder. Patients who had experienced any psychiatric disorder had more severe psychosocial distress (p=0.004) and evidenced a lower level of overall psychosocial adjustment (p=0.030) than patients who had not. Conclusion : We showed that AIDS patients have a high prevalence of psychiatric disorders, and that AIDS patients with psychiatric disorders were particularly low in levels of psychosocial adjustment. Thus, careful attention should be given to psychiatric aspects of AIDS patients emphasizing the early diagnosis and treatment of psychiatric disorders.
산업단지 분산에너지 활성화를 위한 경제성 분석에 관한 연구
정훈(Hoon Jung),안준호(Joon-Ho Ahn) 한국조명·전기설비학회 2024 조명·전기설비학회논문지 Vol.38 No.1
Recently, Industrial complexes have been undergoing rapid changes not only in the global economy, but also in the energy sector, such as in response to climate change and the Fourth Industrial Revolution. It is extremely difficult to supply 100% of the energy consumption of industrial parks with new renewable energy, and currently solar power generation, small wind power, hydrophobic power, etc. are mainly used. In this paper, we conducted an economic analysis based on Net Present Value (NPV) and found that, with the exception of solar power generation, the return on construction costs is in the red due to high unit prices and installation and operation costs. As a result of predicting the average price of carbon credits over the next 20 years, By combining the electricity bill revenue of about 5.6 billion won and the carbon emissions credit revenue of about 20 billion won due to the expansion of distributed energy sources, it is expected to generate a profit of about 25.6 billion won compared to the investment in distributed energy resources of 18.88 billion won. It is judged that renewable energies such as small wind power and hydrophobic power should be considered depending on the location of the industrial park and the surrounding environment.