• 한국조경학회지
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• 제44권3호
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• pp.79-93
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• 2016

본 연구는 한국과 중국의 대표 원림서(園林書) 가운데 하나인 "양화소록(養花小錄)"과 "장물지(長物志)"를 비교하여 한중 원림에 나타난 문인의 취향을 이해하고자 했다. 주요 비교 대상은 화목류이며, 연구 결과는 다음과 같다. 첫째, 강희안은 화목을 기르고 감상하는 궁극적인 목적을 자신의 완성에 두었지만, 문진형(文震亨)은 은일의 삶을 실천하는 수단으로 화목을 이용하였다. 둘째, 강희안이 화목을 기르는 것은 성리학적 '격물치지(格物致知)'를 바탕으로 한 인간의 덕성 함양이지만, 문진형은 화목의 형태나 배식방법을 통해 '아(아취(雅趣))'를 구현하였다. 셋째, 양국 문인의 화목 선호도는 많은 부분에서 유사하지만, 화목을 화분에 두고 감상하는데 있어서는 어느 정도 차이를 보인다. 일례로 화분을 선택하거나 배치하는데 있어서만 하더라도 강희안에게는 소박함과 담백함이, 문진형에게는 화려함과 세련됨이 특징적으로 나타난다. 그리고 문인 정신의 표본이 되었던 송대(宋代) 문인의 완상(玩賞) 취미에 비춰볼 때, 강희안은 내면의 정신세계를 계승한 반면, 문진형은 '문인다움'을 시각적 이미지로 표출시켰다.

• Journal of Radiation Protection and Research
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• 제36권4호
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• pp.209-215
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• 2011

우리나라 주요 밭작물(콩, 무, 배추)에 대한 $^{99}Tc$의 토양-작물체 전이계수(TF)를 조사하기 위하여 온실 내에서 포트실험을 수행하였다. 토양은 경주 방폐장 주변 네 곳(콩 두 곳, 무 및 배추 두 곳)의 밭에서 채취하였다. 파종 3-4 주 전에 건조 토양을 $^{99}Tc$ 용액과 혼합한 다음 포트에 담고 관개하였다. TF 값은 건조 토양 중 $^{99}Tc$ 농도(Bq $kg^{-1}$-dry)에 대한 작물체 내 농도(Bq $kg^{-1}$-dry or fresh)의 비로 나타내었다. TF 값은토양 간에 큰 차이가 없었다. 콩알의 TF 값은 경엽부에 비해 극히 낮아 $^{99}Tc$의 종실로의 이동성이 매우 낮은 것으로 나타났다. 콩알, 무 뿌리, 무 잎 및 배추 잎에 대한 $^{99}Tc$ 전이계수의 대표치가 각각 두 토양에 대한 산술평균치인 $1.8{\times}10^{-1}$, $1.2{\times}10^1$, $3.2{\times}10^2$, $1.3{\times}10^2$(건조 작물체 기준)로 제안되었다. 채소류의 경우 신선 작물체에 대한 대표치도 제안되었다. 본 제안치는 대표성이 충분치 못하므로 지속적으로 최신화 할 필요가 있다.

• Corrosion Science and Technology
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• 제13권2호
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• pp.62-69
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• 2014

A huge number of carbon steel piping components installed in the secondary system of nuclear power plants are exposed to aging mechanisms such as FAC (Flow-Accelerated Corrosion), Cavitation, Flashing, and LDIE (Liquid Droplet Impingement Erosion). Those aging mechanisms can lead to thinning of the piping components. To manage the wall thinning degradation, most of utilities in the world predict the wall thinning rate based on the computational program such as CHECWORKS, COMSY, and BRT-CICERO, evaluate the UT (Ultrasonic Test) data, and determine next inspection timing, repair or replacement, if needed. There are several evaluation methods, such as band, blanket, and strip methods, commonly used for determining the wear of piping components from single UT inspection data. It has been identified that those single UT evaluation methods not only do not consider the manufacturing features of pipes, but also may exclude the data of the most thinned point when determining the representative wear rate of piping components. This paper describes a newly developed single UT evaluation method, E-Cross method, for solving above problems and introduces application examples for several pipes and elbows. It was identified that the E-Cross method using the length and width of UT data excluded the most thinned points appropriate as the single UT evaluation method for thinned piping components.

• 한국조경학회지
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• 제26권2호
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• pp.251-258
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• 1998

The purposes of this study was to investigate accuracy and indigenity of landscape plant species in planting design and construction at housing complex and offer basic data for improving precision of planting construction. The scientific name of landscape plant species was described in planting drawings at only two sites among twelve survey sites. According to analysis on indigenity of plant species in planting drawings, it was found that the component ratio of foreign species was the highest and the component ratio of native species at public housing complex was the lowest. The component ratio of landscape plant species in planting construction was severely differed to that of planting drawings. Also the component ratio of cultivar was higher than that of planting drawings due to planting of sevveral cultivars for one species in planting drawings. In the result of accuracy analysis on landscape plant species in planting construction, it was found that mean ratio of inacccurate species was 33.2% at public housing complex, 29.6% at local company housing complex and 26.4% at nationwide company housing complex. It was found that several cultivars were planted for one species in planting drawings. The representative species which were planted by several cultivars were Camellia japonica, Rododendron spp., Prunus spp. and Magnolia spp. and so on. In order to promote the precision and speciality of planting design and construction, scientific and cultivar name of plants should be described in planting drawings.

• 대한한의학회지
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• 제30권6호
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• pp.96-102
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• 2009

Objectives: Traditional Korean herbal formulae are composed of multiple medicinal plants. This situation of multiple-ingredient mixtures has been considered as a major obstacle to new drug development using herbal formulae in the world market, despite the effectiveness of such mixtures. This study reviewed Liv-52 as a representative model of successful drug development using a multiple-herb mixture. Methods: All articles for Liv-52 were collected from the PubMed database. The history, composition of Liv-52, its pharmaceutical efficacy and mechanisms, and data from clinical studies including its market size were analyzed. Results: Liv-52 is composed of seven herbal plants and it is the best known in Ayurvedic medicine for treating liver disorders. Since its 1955 introduction, forty four international papers have been published based on pre-clinical and clinical trials. The efficacy and mechanisms of Liv-52 were intensively studied. Currently, Liv-52 is one of the top-selling products, with over 10 million dollars sales annually, in the world market. Conclusions: These results indicate that Korean herbal formulae could be new global drugs if scientific evidence for efficacy and standardization are produced via literature researches.

• The Plant Pathology Journal
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• 제28권4호
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• pp.381-389
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• 2012

Molecular characterization of Cucumber mosaic virus (CMV) was done by using samples from tomato and cucurbitaceous plants collected from different locations in the northwest region of Iran. After screening by enzyme-linked immunosorbent assay, 91 CMV-infected samples were identified. Biological properties of eight representative isolates were compared with each other revealing two distinct phenotypes on squash and tomato plants. Phylogenetic analyses based on nucleotide sequences of the coat protein (CP), movement protein (MP) and 2b of the new isolates, together with that of previously reported isolates, led to the placement of the Iranian isolates in subgroups IA and IB according to CP and MP genes, but in subgroup IA according to the 2b gene. These data suggest that reassortment may have been a major event in the evolution of CMV in Iran, and that the Iranian isolates are derived from a common recent ancestor that had passed through a bottleneck event.

• 대한인간공학회지
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• 제33권1호
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• pp.1-14
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• 2014

Objective: The purpose of this study is to select the methodology for SMR HRA which has characteristics that are different from existing nuclear power plants and digital-based plants. Background: We must assure safety to preoccupy export of technology to developing countries or countries interested in nuclear application. And we can be an advanced country in nuclear technology by securing original technology in the field of SMR such as SMART. Method: THERP, which is the most representative HRA methodology among all, and RARA, which is the latest HRA methodology. This study compared and evaluated THERP and RARA. Results: As a result of applying THERP and RARA methodologies which are based on LOCA EOG task analysis result, this research concluded that RARA has higher personal errors than THERP. Conclusion: This study needs validation for LOCA, emergency operations, normal and abnormal scenarios since HRA methodology was only focused on LOCA scenario. Application: The results of this study can apply as base line data when designing MMIS, which is the main control room of SMART, and when building a simulator.

• 대한인간공학회지
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• 제25권3호
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• pp.77-83
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• 2006

The purpose of this study is to assess the organizational types and the job stress factors that affect the procedure-based job performances in nuclear power plants(NPPs). We derived 24 organizational factors affecting to the job stress in NPPs from the job stress analysis models of NIOSH(1989), Cooper(1990), and Karasek(1990). onsidering the safety characteristic in operating tasks of NPPs, we individuate among the tasks in NPPs through the division of duty and the analysis of cost activity. Through the questionnaire survey, a structured interview with the responsible employees, and expert panels, we assess 70 tasks among 777 tasks managed officially under the procedures. They are the representative tasks to the duties of each division and are directly related to the safety. We utilize the OPTI(organizational personality type indicators) to characterize the personality type of each organization in NPPs.

• The Korean Journal of Ecology
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• 제28권6호
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• pp.365-373
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• 2005

Understanding the relation of water environmental factors and vegetation is critical to restoration and management of wetlands. To reveal relationships between representative plant groups and water environments, we measured cover and abundance of plant species, water depth, temperature, pH, conductivity, dissolved oxygen, $NH_4$-N, $NO_3$-N, and $PO_4-P$ concentration in water in Wangsuk stream (WS) and Gwarim reservoir (GR). This study was conducted monthly from May to October, 2004. Six vegetation groups $(W1{\sim}W6)$ in WS and five vegetation groups $(G1{\sim}G5)$ in GR were identified using TWINSPAN. WS was characterized by Phragmites japonica, Digitaria sanguinalis, Phalaris arundinacea, Beckmannia xyzigachne and Persicara hydropiper, Persicaria thunbergii, Typha angustifolia. GR was characterized by T. angustifolia, Scirpus tabernaemontani, P. thunbergii, Humulus japonicus and Scirpus fluviatilis, Typha orientalis, Zizania latifolia. The vegetation in WS experienced greater seasonal changes than in GR. A correspondence analysis suggests that water depth was the major environmental factor influencing the distribution of most plants communities in both wetlands.

• 한국안전학회지
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• 제26권5호
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• pp.41-45
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• 2011

The fire event occurred in fire proof zone often causes serious electrical problems such as shorts, ground faults, or open circuits in nuclear power plants. These would be directed to the loss of safe shutdown capabilities performed by safety related systems and equipments The fire event can treat the basic design principle that safety systems should keep their functions with redundancy and independency. In case of a cable fire, operators can not perform their mission properly and can misjudge the situation because of spurious operation, wrong indication or instrument. These would deteriorate the plant capabilities of safety shutdown and make disastrous conditions. In this paper, the cables of the representative nuclear power plant in korea is selected and the cable functional failure temperature by exposed fire using Cable Response to Live Fire(CAROLFIRE) is studied. It is expected that the results are very useful to know the cable failure temperature by exposed fire. We confirmed the safety and integrity of the cable by exposed fire and those results will use the based data of cable exposed fire characteristics.