• Korean Chemical Engineering Research
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• 제51권5호
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• pp.536-539
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• 2013

본 연구에서는 황벽나무, 두충나무 등을 포함하는 복합수목추출물의 항균활성 효과 및 안전성에 대해 검토하였다. 항균활성은 피부상재균이며 기회 병원성균인 Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli 및 Candida albicans에 대해 disc 확산법으로 실험되었다. 안전성 시험으로는 단회 경구투여 독성시험, 단회투여 흡입독성 시험, 반복투여 흡입독성시험이 실시되었다. 항균력효과시험 결과 추출물은 Staphylococcus aureus, Pseudomonas aeruginosa, Candida albicans에 대해 우수한 항균활성을 보여주었으나, Escherichia coli에서는 항균활성이 없었다. 복합수목추출물의 단회 경구투여 독성시험, 단회투여 흡입독성시험 및 반복투여 흡입독성시험의 결과 독성은 관찰되지 않았다. 따라서 황벽나무, 두충나무 등을 포함한 복합수목추출물은 천연 항살균제로서 상업화 가능성이 매우 높음을 알 수 있었다.

• 항공우주기술
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• 제8권2호
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• pp.19-25
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• 2009

본 논문은 액체산소 및 케로신을 이용한 30톤급 터보펌프+가스발생기 연계시험의 시동모사 수류시험 결과를 포함하고 있다. 시험 목적, 연계시험 시스템 구성, 시험 조건, 시험 절차 및 시험결과가 제시되었다.

• 한국지하수토양환경학회:학술대회논문집
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• 한국지하수토양환경학회 2004년도 총회 및 춘계학술발표회
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• pp.198-200
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• 2004

Four crop plant species were tested to assess an ecotoxicity in arsenic-amended soils. Test plants were Sorghum bicolor, Cucumis sativus, Triticum aestivum, and Phaseolus radiatus. The presence of arsenic decreased the root and shoot growths. Arsenite was more toxic than arsenate to all test plants. Root growths of Phaseolus radiatus and Cucumis sativus seem to be a good protocol to assess ecotoxicity of soils contaminted by arsenic.

• 한국산업융합학회 논문집
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• 제5권3호
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• pp.173-178
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• 2002

In this research, we have worked about the radiation thermometer which can be applied to the hazard circumstance such as steel plant. In the results, we have developed radiation thermometer of a measuring range $500-1500^{\circ}C$, accuracy ${\pm}0.1%$, repeatability ${\pm}0.1%$, resolution $0.2^{\circ}C$. We performed extensive field test for 6 months at the hot strip mill in steel plant. Through the test, we have confirmed the reliability of the developed pyrometer.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2000년도 제15차 학술회의논문집
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• pp.204-204
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• 2000

This paper describes the development of training simulator for Hadong fossil Power Plant. The simulator was developed to train operator, test new control Logic and evaluate alternative operating procedure for expert engineer of control system. The most control logics such as Siemens TELEPERM ME and GE Mark V are translated directly from microprocessors. Those HMI are also directly emulated. The simulation was performed by ProTRAX modeling software. The paper discusses the configuration of simulator and the simulation results of 30%, 50%, 75% and 100% normal rate load test.

• 한국지진공학회논문집
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• 제18권1호
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• pp.63-71
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• 2014

This study presents an experimental study of the structural behavior for steel plate-concrete column-to-steel girder connections. Experiments were carried out to investigate the moment-rotation characteristics, failure behavior and ultimate moment capacity of these connections. The results of this experimental study involving three welded moment-resisting connections subjected to cyclic loading are presented. The specimens were fabricated at full scale to evaluate their hysteretic behavior. A description of the test specimens, the details of the joint, the test system and the testing methods are described. The test results showed that the structural behavior of these composite connections was influenced by the connection details.

• 한국원자력학회:학술대회논문집
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• 한국원자력학회 1995년도 추계학술발표회논문집(2)
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• pp.588-595
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• 1995

The Load Rejection to House Load test at 100% power was successfully performed during the YGN 4 PAT period. In this test, all plant control systems automatically controlled the plant from 100% power to house load operation mode. The LTC code, which was used in the performance analysis during the design process of YGN 3&4, predictions of the test agreed with the measured data demonstrating the validity of the code as well as the completeness of the plant design.

• 한국원자력학회:학술대회논문집
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• 한국원자력학회 1998년도 춘계학술발표회논문집(1)
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• pp.398-403
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• 1998

The Load Rejection to House Load test at 50% power was successfully peformed during the UCN 3 PAT period. In this test, all plant control systems automatically controlled the plant from 50% power to house load operation mode. The KISPAC code, which was used in the performance analysis during the design process of UCN 3&4, predictions of the test agreed with the measured data demonstrating the validity of the code as well as the completeness of the plant design.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 하계학술대회 논문집 D
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• pp.2301-2303
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• 2003

A steam turnine in thermal/nuclear power plant drives generator and maintains it at rated speed using high temperature and high pressure steam energy. After synchronization in parallel with the power system, generator output increases according as the governor, that is the controller, increases steam flow into turbine. By the way, as the steam flow into turbine can not be reduced fast even though the electrical load is lost, the turbine gets into dangerous situation due to the increase of its speed. At this time, the duty of the turbine governor is to limit the speed to its overspeed trip setpoint by stopping the steam flow as soon as possible, the test of which is called load rejection test. It is introduced in this paper for a simulation test of generator load rejection to be implemented on the turbine governor in a 600MW nuclear power plant before its startup.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 제38회 하계학술대회
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• pp.1605-1606
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• 2007

An electrical generator in power plant is driven and maintained its speed at rated by steam turbine. By the way, after synchronization in parallel with the power system, as the steam flow into turbine can not be reduced fast even though the electrical load is lost, the turbine gets into dangerous situation due to the increase of its speed. At this time, the duty of the turbine governor is to limit the speed to its overspeed trip set point by stopping the steam flow as soon as possible, the test of which is called load rejection test. It is introduced in this paper for a field simulation test of generator load rejection to be implemented on the turbine governor in a 680MW nuclear power plant before its startup.