• 한국태양에너지학회:학술대회논문집
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• 한국태양에너지학회 2008년도 추계학술발표대회 논문집
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• pp.322-326
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• 2008

This paper presents an estimation method of small hydro power(SHP) potential using a SHP resource map. As a basic unit of SHP energy potential at a certain area, capacity and annual energy production of unit head was calculated from the catchment area given by a SHP resource map which was established by numerical hydrologic simulation so that a logical and relatively accurate potential estimation was possible comparing with the performance analysis model for SHP sites. The performance characteristics for Samok-Ri site were analyzed, using the SHP resource map and the developed model. It was found that the SHP resource map and the developed model is useful tool to estimate SHP potential.

• 한국재료학회:학술대회논문집
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• 한국재료학회 2011년도 춘계학술발표대회
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• pp.238.1-238.1
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• 2011

본 연구에서는 non-contact deposition method의 일환인 ESD (electroctatic deposition)의 박막공정을 이용하여 Conductive layer 위에 Gold nanoparticles 및 Silver nanoparticles 등 organic/inorganic nano particle conductive ink system의 단분산 2D 박막을 제조를 연구하였다. ESD head를 통해 여러가지 organic / inorganic nano particle conductive ink system을 Deposition하였으며 분산도가 높고 균일한 단분산의 2차원 박막 구조를 얻을 수 있었으며, 전도성 PEDOT과의 Hybridization을 통해 균일상의 표면 Morphology를 갖는 고 전도성 투명 필름을 제작하였다. ESD technique를 이용하는 박막공정 기술은 나노입자 및 나노구조물의 박막화 패턴화를 포함하는 새로운 Deposition 기술로써 이를 응용하여 금속 나노입자의 2차원의 패턴화된 박막 구현을 통해 유기반도체 및 전자소자에의 응용성을 증거할 수 있었다.

• 한국의학물리학회지:의학물리
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• 제32권4호
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• pp.99-106
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• 2021

Purpose: In this study, we aimed to manufacture a patient-specific gel phantom combining three-dimensional (3D) printing and polymer gel and evaluate the radiation dose and dose profile using gel dosimetry. Methods: The patient-specific head phantom was manufactured based on the patient's computed tomography (CT) scan data to create an anatomically replicated phantom; this was then produced using a ColorJet 3D printer. A 3D polymer gel dosimeter called RTgel-100 is contained inside the 3D printing head phantom, and irradiation was performed using a 6 MV LINAC (Varian Clinac) X-ray beam, a linear accelerator for treatment. The irradiated phantom was scanned using magnetic resonance imaging (Siemens) with a magnetic field of 3 Tesla (3T) of the Korea Institute of Nuclear Medicine, and then compared the irradiated head phantom with the dose calculated by the patient's treatment planning system (TPS). Results: The comparison between the Hounsfield unit (HU) values of the CT image of the patient and those of the phantom revealed that they were almost similar. The electron density value of the patient's bone and brain was 996±167 HU and 58±15 HU, respectively, and that of the head phantom bone and brain material was 986±25 HU and 45±17 HU, respectively. The comparison of the data of TPS and 3D gel revealed that the difference in gamma index was 2%/2 mm and the passing rate was within 95%. Conclusions: 3D printing allows us to manufacture variable density phantoms for patient-specific dosimetric quality assurance (DQA), develop a customized body phantom of the patient in the future, and perform a patient-specific dosimetry with film, ion chamber, gel, and so on.

• 한국어류학회지
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• 제13권2호
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• pp.117-122
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• 2001

강원도 삼척시 호산리 호산천에서 채집된 꾹저구, 검정꾹저구, 무늬꾹저구 3종의 성적이형에 관하여 조사하였다. 3종은 산란기때 뚜렷한 혼인색을 나타낸다. 3종 모두 암컷에서는 두부복면, 배지느러미, 제 1 등지느러미 외연이 진한 흑색을 나타냈다. 그러나 검정꾹저구의 제 1 등지느러미 외연으로부터 1/3은 진한 흑색을 나타낸 반면 다른 2종은 짙은 황색을 나타내는 차이를 보였다. 3종의 암컷모두 복부가 짙은 황색이 되는 공통점을 나타내었다. 수컷인 경우, 꾹저구와 무늬꾹저구는 거의 같은 혼인색을 나타냈으나 뒷지느러미에 있어서 무늬꾹저구는 짙은 흑색을 나타내었고, 꾹저구는 옅은 흑색을 나타내었다. 검정꾹저구는 두부복면, 배지느러미 및 뒷지느러미가 황색을 나타낸 반면, 나머지 2종은 옅은 흑색을 나타내었다. 이들 3종의 수컷 생식공돌기는 좁고 긴 삼각형 모양이었고, 암컷은 굵고 짧은 하트모양이었다. 꾹저구는 7개의 형질 즉, 체고, 두장, 문장, 상악장, 두고, 가슴지느러미 길이, 안경 등에서 암수간에 유의한 차이가 인정되었다. 검정꾹저구는 11개의 형질 즉, 체고, 미병장, 미병고, 두고, 두장, 문장, 상악장, 두폭, 뒷지느러미 길이, 가슴지느러미 길이 및 꼬리지느러미 길이 등에서 유의한 차이가 인정되었다. 무늬꾹저구는 10개의 형질 즉, 체고, 두장, 미병고, 문장, 상악장, 두폭, 뒷지느러미 길이, 가슴지느러미 길이, 꼬리지느러미 길이 및 안경 등에서 유의한 차이가 인정되었다. 이들 형질중, 체고, 두장, 문장, 상악장 및 가슴지느러미 길이 등은 3종 모두 암수간에 유의한 차이가 인정된 형질이었는데 암컷은 체고에서만 수컷보다 높은 수치를 나타냈고, 나머지 형질에서는 수컷이 암컷보다 높은 수치를 나타냈다. 또한 암수간에 가장 큰 차이로 쉽게 구분이 가능했던 형질은 상악장으로써 수컷의 상악장은 암컷의 후연을 훨씬 넘었다 (p<0.001).

• 한국전통조경학회지
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• 제38권1호
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• pp.53-66
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• 2020

문헌조사와 현장조사를 통해 순창 구미리 남원양씨 종택과 만수탄 종호(鍾湖)에 펼쳐진 초로 양운거의 정원 향유 양상을 추적하기 위하여 시도한 본 연구의 결과는 다음과 같다. 종호의 경관 향유자는 남원양씨(南原楊氏)인 초로 양운거와 종호팔경의 작자이기도 한 진주하씨 양진당 하만리를 비롯한 6인의 노선(老仙)으로, 이들은 양운거의 친우이거나 사돈 또는 외숙으로서 매우 긴밀한 관계였다. 투구모양의 돌섬과 소(沼)를 중심으로 생성된 종호정과 육로암 그리고 인근 탁영정 등은 종호에서 최대 약 2㎞ 떨어진 종택을 본제로 삼아 행해졌던 풍류 행위 거점이자 임천원림(林泉園林)이라 할만하다. 종호팔경은 종호암과 육로암 그리고 탁영정을 시점으로 하는 정자팔경과 구미리 남원양씨 영토를 대상으로 한 읍치팔경의 성격이 함께 공유하는 특성이 발견된다. 만수탄 일원에서 확인된 바위글씨는 총 9점으로 만수탄에서 행해졌던 시율(詩律)·낚시·탄금 풍류와 함께 특히, 술 풍류가 행해졌던 현장임을 여실히 알려줄 뿐 아니라 종호팔경의 경관내용이나 경관구조와도 밀접히 관련되어 있다. 종호팔경과 그곳에서의 풍류 행위 그리고 주변 바위글씨는 만수탄 종호의 옛 풍경을 상기하거나 연출하기 위한 매우 시사적이고 유효한 문화경관이자 '노블레스 오블리주의 정원 향유사례'로 현대적 전통조경에 시사하는 바가 적지 않다.

• 복식
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• 제57권7호
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• pp.84-97
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• 2007

Dancing with weapons existed spontaneously when war and hunting were common, and sword dancing, as a dance for banquets, developed and changed in various forms. In Korea, sword dancing was performed from the Three Dynasty Period, and in Joseon Dynasty, it was performed as court ceremony. The origin of the sword dancing, that has been performed from the Joseon Dynasty until now, and costumes for sword dancing isn't accurate. The purpose of this study is to analyze the sword dancing costume of China, Korea's neighboring country, and that of Korea in the same period, and to find out the process of wearing military uniform: Jun-mo, Jeo-go-ri, Chi-ma, Gwae-ja, and Jun-dae, being settled as the sword dancing costumes of Korea in late Joseon Dynasty. In China, sword dancing became famous in Han Dynasty, and in Tang Dynasty, it was the meridian of sword dancing with the most magnificent form. After the Song Dynasty, the sword dancing fades away. In Korea, the sword dancing started as a mask dancing of children that Hwa-rang(bravery youth) in Shilla Dynasty started. After the Unified Shiila Period, the sword dancing of Tang Dynasty spread to Korea, with active interchange between the two countries. After the Corea Dynasty, the mask dancing of children faded and the sword dancing of Tang Dynasty changes into Korean form. It was incorporated into the court ceremony after the mid-period of Joseon Dynasty, and the costumes were settled as the military uniform, which are Gwae-ja, and Jun-dae on top of Chi-ma, and Jeo-go-ri, and Jun-moon the head.

• International Journal of Automotive Technology
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• 제6권6호
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• pp.555-561
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• 2005

This experimental study was executed to obtain basic data for actual engine operation using radical induced ignition method (RI) which can achieve emission reduction and high efficiency due to the rapid bulk combustion. In this study, a direct injection diesel engine was converted into SI type engine with a sparkplug. The modified SI type engine can be divided into two classes. One is the SI engine with a sparkplug only at the cylinder head, and the other is the SI engine with the sparkplug which is enveloped in a sub-chamber. Also, a basic experimental was conducted in order to investigate combustion mechanism of radical induced injection before the experiment execution for actual engine using the modified SI engine. The bulk combustion phenomenon of radical induced ignition method was analyzed from the basic experiment by using a constant volume chamber. Volume value of sub-chamber used in this experiment is approximately $0.2\%$ of one of the main combustion chamber. In this paper, combustion characteristics using radical induced injection method was compared with that of using spark ignition method according to change in the engine speed and equivalence ratio. As a result, in the case of the radical induced injection engine, the combustion duration and cycle variation were respectively reduced ranged from $\Phi$(equivalence ratio)=0.8 (lean mixture ratio) to $\Phi$=1.0 (stoichiometric ratio).

• 박물관보존과학
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• 제14권
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• pp.23-28
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• 2013

진주 금산면 중천리 공동주택 부지에서 국내 처음으로 출토된 인두형토기에 대한 전반적인 보존처리 과정을 소개하고자 한다. 유물에 대한 정확한 제작기법 등을 알아보기 위하여 X-ray 촬영과 육안조사를 실시하여 유물 상부(정수리)의 원형 투공(4개)은 삼각형을 이루며, 투공의 지름은 3개가 같고, 하나가 다르다는 것이 확인되었다. 코는 좁고 긴 사다리꼴 형태의 점토를 빚어 토기면에 부착하였으며, X-ray 촬영으로 입위·아래 단의 원형 홈 깊이(윗단: 10 mm, 아랫단: 6 mm)를 확인하였다. 보존처리에 사용되는 각종 접착제나 복원제는 가역성이 있는 재료를 선택하여 접합·복원하였다. 인두형토기는 출토된 주변에서 동물뼈를 매장한 제사유구가 분포하고 있는 점과 정수리나 귀, 치아 부분에 무엇인가 장식을 하기 위한 홈이 있는 점으로 볼 때, 집단의 의례 행위와 관련된 것으로 학계에서는 추정한다. 또한 인두형토기가 발굴에서부터 과학적인 보존처리를 거쳐 복원되기까지의 과정을 '테마전시'로 기획하여, 발굴된 이후에 어떤 과정을 거쳐 전시가 이루어지는지에 대한 정보를 관람객에게 제공하고자 하였다.

• Journal of Microbiology and Biotechnology
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• 제17권2호
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• pp.262-270
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• 2007

Of the twelve lytic bacteriophages recovered from five different fermenting cucumber tanks that were inoculated with Pediococcus sp. LA0281, a lytic phage, ${\phi}ps05$, was characterized in the present study. The plaques were mostly clear and round-shaped on the lawn of starter strain, indicating lytic phage. Overall appearance indicated that it belongs to the Siphoviridae family or Bradley's group B1, with a small isometric head and a flexible noncontractile tail with swollen base plate. The average size was found to be 51.2 nm in head diameter and 11.6 nm wide ${\times}$ 129.6 nm long for the tail. The single-step growth kinetics curve showed that the eclipse and the latent period were 29 min and 34 min, respectively, and an average burst size was calculated to be 12 particles per infective center. The optimum proliferating temperature ($35^{\circ}C$) was slightly lower than that of cell growth ($35\;to\;40^{\circ}C$). The structural proteins revealed by SDS-PAGE consisted of one main protein of 33 kDa and three minor proteins of 85, 58, and 52 kDa. The phage genome was a linear double-stranded DNA without cohesive ends. Based on the single and double digestion patterns obtained by EcoRI, HindIII, and SalI, the physical map was constructed. The overall size of the phage genome was estimated to be 24.1 kb. The present report describes the presence of a lytic phage active against a commercial starter culture Pediococcus sp. LA0281 in cucumber fermentation, and a preliminary study characterizes the phage on bacterial successions in the process of starter-added cucumber fermentation.

• 한국동물위생학회지
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• 제46권4호
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• pp.339-348
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• 2023

The outbreak of lumpy skin disease (LSD), caused by LSD virus (LSDV), in Jeollabuk-do was first confirmed at a Korean cattle farm in Buan-gun on October 24, 2023. Afterwards, thirteen cases (twelve cases in Gochang-gun and a case in Imsil-gun) were further confirmed, resulting in a total of fourteen cases over 25 days until November 17, 2023. Clinical examination were conducted on infected and co-habitting cattle from the LSD-affected farms with particular focus on the presence of nodules throughout the body such as head, neck, chest, femur, head, and perineum. As a results, abnormal clinical signs were observed in fifteen cows: loss of appetite in six cows, high fever in three cows, eye mucosal nodules in a cow, nasal mucosal nodules in six cows, nodules on perineum in five cows, scrotum nodules in two cows, papillary nodules in a cow, and/or skin nodules in eleven cows. By the PCR methods, the common gene of capripox virus and/or the specific gene of LSDV were detected in 35 of the 69 cows tested this study. In the Farm1, capripox virus-specific gene, LSDV wild strain-specific gene, and LSDV vaccine strain-spcific gene were simultaneously detected in affected cows, indicating the cattle farm was affected by various strain of LSDV. As a result of combining clincal examination and PCR test, it was found that clinically and subclinically infeted cows coexist in the LSDV-infected farms. These finding in this study will be a great help in diagnosis and prevention of the LSD in Korean cattle farms.