• 대한기계학회:학술대회논문집
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• 대한기계학회 2008년도 추계학술대회B
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• pp.2505-2510
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• 2008

A nuclear fuel test loop (after below, FTL) is installed in IR1 of an irradiation hole in HANARO for testing neutron irradiation characteristics and thermo hydraulic characteristics of a fuel loaded in a light water power reactor or a heavy water power reactor. When HANARO is normally operated, the fuel loaded in the irradiation hole has a nuclear reaction heat generated by a neutron irradiation. To remove the generated heat and to maintain an operation condition of the test fuel, a main cooling water system (MCWS) is installed in the OPS of the FTL. This paper describes the cold function test results of the MCWS. It was confirmed through the test results that the system met the design requirements under a cold operation condition.

• 동의생리병리학회지
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• 제21권4호
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• pp.1045-1050
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• 2007

This study was conducted to help oriental medical prevention program policy for improvement of public health in a local community. We have researched respiratory diseases and demands for oriental medical cold preventing therapy of some residents in Chung-Buk. We have conducted individually face-to-face interviews through standardized questionnaires to 141 residents of two towns (76 in Haeng-jung, 65 in Gu-mi) under the jurisdiction of Chung-won Public Health Center. The senior aged over 65 was 53.9%, which was a little more than the average senior age. The rate which could be diagnosed as a disorder of lung function was 2.97% by Lung Function Test. The participants diagnosed as Asthma accounted for 17.9% by Symptom Based Easy Asthma Diagnosis of Easy Asthma Management(EAM). The participants who had intentions of participating in oriental medical cold preventing therapy accounted for 58.6%. And among the oriental medical cold preventing therapy the preference for acupuncture and moxibustion was 77.1 %, which was much higher than any other thing. It is thought that people still have little understanding about the oriental medical cold preventing therapy. Therefore it is considered that the Korean government should try to establish well-organized cold preventing system on the basis of Oriental Medical theory for a local community.

• 한국추진공학회지
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• 제15권6호
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• pp.26-37
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• 2011

30톤급 액체로켓엔진 연소기의 개발 기술을 바탕으로 75톤급 기술검증용 내열재 연소기를 제작하였다. 내열재 연소기의 수력학적 특성은 저유량 조건의 수류시험과 점화시험을 통해 점검하였고, 시험결과 수력학적 기능이 양호함을 보여 주었다. 정적조건의 작동성 측면에서 점화링을 이용한 측면 점화방식 역시 적합한 점화기능을 보여 주었다. 그러나 동특성 측면에서 나타나는 특정 주파수의 생성 및 소멸 현상을 이해하기 위한 면밀한 검토가 요구된다. 이를 위해서는 75톤급 연소기의 정격조건에서 연소 시험이 가능한 대형 연소시험설비가 조속히 구축되어야 할 것이다.

• 감성과학
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• 제14권3호
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• pp.425-434
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• 2011

본 연구의 목표는 일반적으로 사람들이 일상에서의 추위 노출 시간을 고려하여 단기간 추위노출과 지속적인 장기간의 추위 노출이 인지기능과 뇌의 신경세포생성과 신경전달물질에 미치는 영향을 규명하고자 하였다. 실험 방법으로 인지행동검사(Behavior test)와 면역조직화학법(Immunohistochemistry Method)을 실시하였다. 본 연구에서는 7주령(평균체중 $250{\pm}10g$) Sprague-Dawley 계열의 수컷 흰쥐(n=40)를 사용하여, 무선배치 방식으로 상온 대조군(n=10), 저온 3일군(n=10), 저온 5주군(n=10)으로 분류 하였다. $22^{\circ}C$(상대습도 40%)의 온도는 상온으로 설정 하였고, $4^{\circ}C$(상대습도 40%)는 추위 스트레스 환경으로 설정 하였다. 수동회피실험의 결과에 의하면, 추위 스트레스는 기억력의 감소를 가져왔다. 그러나 추위 스트레스에 의한 기억력 감소의 보상작용으로 신경전달 물질인 5-HT와 TPH의 증가가 나타나는 것을 면역조직화학법을 통해 해부시경학적으로 확인할 수 있었다. 그러나 보상작용에 의한 새로운 신경세포생성 증가가 기억력을 정상상태로 회복시키지는 못하였다.

• 사상체질의학회지
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• 제21권3호
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• pp.216-222
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• 2009

1. Objectives: This case study described a process of the patient diagnosed as acute hepatitis A treated by medication based on the Sasang Constitutional Medicine and acupuctural theraphy and obtained improved effects about several symptoms. 2. Methods: We diagnosed the male patient with acute hepatitis A as Tae-Eumin Exterior-Cold-Disease by the Cold in the Esophagus, and administered Mahwangbalpyo-tang and Handayeolso-tang according to clinical progress. And we evaluated the results by liver function test(LFT; AST, ALT, $\gamma$-GTP ), total bilirubin level and the visual analog scale(VAS) of symptoms. 3. Results and Conclusion: Almost symptoms (except for jaundice) at the time of admission were disappeared, and also jaundice (estimated by color of scleras and color of urine) was alleviated. Also level of AST, ALT, $\gamma$-GTP and total bilirubin decreased in laboratory test. We obtained positive effects to the therapy but we considered necessities of further comparative studies with control group.

• 한국도로학회논문집
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• 제20권3호
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• pp.1-9
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• 2018

PURPOSES : In order to evaluate a crack resistance at cold joint, sealing tape was adopted to apply at cold joint instead of typical tack coat material(RSC-4). The sealing tape was made by hot sealing material. The crack resistance as function of environmental and traffic loading was measured with visual observation. METHODS : In this study, the crack resistance was evaluated as function of environmental and traffic loading. The freeze-thaw method was adopted for environmental loading of asphalt pavement. condition. The damage of cold joint under freeze-thaw action is initiated by ice expansion load and accelerated by the interfacial damage between new and old asphalt pavement. The traffic loading was applied with wheel tracking machine on the cold joint area of the asphalt pavement for 3 hours at $25^{\circ}C$. The evaluation of crack resistance was measured with visual observation. The freeze-thaw results shows that the sealing tape was significantly increased the crack resistance based on. RESULTS : To estimate the crack resistance at cold joint area due to the environmental loading, the Freeze-thaw test was conducted by exposing the product to freezing temperature(approximately $-18^{\circ}C$) for 24 hours, and then allowing it to thaw at $60^{\circ}C$ for 24 hours. The tack coat material(RSC-4) was debonded after 21 cycles of the Freeze-thaw test. The first crack was observed after 14 freeze-thaw cycle with RSC-4 material. But, the sealing tape was not debonded after 24 cycle test. Also, the sealing tape shows the better performance of the crack resistance under the traffic loading with wheel track test. The crack was generated the under traffic loading with RSC-4(tack coating), however, the crack was not shown with sealing tape. It indicates that the sealing tape has a strong resistance of tensile stress due to traffic loading. CONCLUSIONS :Based on limited laboratory test result, a performance of crack resistance using the sealing tape is better than that of general tack coat material(RSC-4). It means that the sealing tape is possible to extend a pavement service life because the crack, one of the main pavement distresses, will be delayed.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2005년도 춘계학술대회 논문집
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• pp.220-224
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• 2005

The technology trend of Flat Panel Display (FPD) equipments have been demanded that there are compact and multi-function. Therefore, nano/micro scale patterned on polymeric materials of Back Light Unit (BLU) in Liquid Crystal Display (LCD) that has been investigated. This paper describes a series of Horizontal Type Micro Tensile Tester that were carried out to investigate the load strain distance performance of typical polymeric material sheets. The polymeric materials film that micro size shaped specimens for tensile test are used by Cold-Isostatic-Press (CIP). Test equipment is Horizontal type Micro Tensile Tester that is presented to measure the micro scale mechanical property of thin film for FPD. This paper presents which easy testing tools measure for micro patterned on polyethylene (PET) specimens.

• 소성∙가공
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• 제17권6호
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• pp.401-406
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• 2008

The frictional behavior of stamping process is a function of interface parameters such as sheet and tool material, lubricant, surface roughness, contact pressure, sliding speed etc. Among these parameters the thing that can be controlled by a steel maker is the surface roughness of sheet. In this study, effects of surface roughness on the frictional behavior of steel sheet for automotive were investigated to find out the way to improve the frictional characteristics of steel sheet. The cold rolled steel sheets with various surface roughnesses were prepared for the test. The flat type friction test was conducted with different lubricant conditions. The surface roughness effect on frictional behavior depends on the viscosity of lubricant. The frictional characteristic of steel sheet was influenced by the amplitude of roughness as well as the shape of that.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 정기총회 및 추계학술대회 논문집
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• pp.748-753
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• 2011

철도용 전자기기의 온도 환경시험을 함에 있어 일반적으로 내한성과 내열성에 관한 시험을 수행한다. KRS 규격의 온도환경시험에서 성능확인은 양부판단의 규정이 "이상이 없어야 한다"로 대부분 되어있다. 이 문구에 대하여 시험자들은 규격 내에서 제시하는 기능시험이나 성능시험을 온도쳄버 장치를 사용하여 시험절차 중에서 수행하기 용이한 몇 가지 시험으로 성능 확인시험을 한다. 이러한 방법으로는 저온 및 고온에서 정상 동작하는지 확인이 안 되는 부품이나 회로가 생길 수 밖에 없다. 이 문제는 성능시험이나 기능시험의 종류를 늘린다고 해서 문제가 해결될 수 있는 것이 아니라고 여겨진다. 본 논문에서는 철도용품에 대한 내한성 및 내열성에 대한 KS 및 KRS 규격 검토와 온도시험의 한계를 검토하여 그에 대한 대안으로 데이터쉬트(DataSheet)의 활용으로 장착된 부품의 사용온도가 기준에 적합한지 확인하는 방법을 제시하고 실제 현장적용 사례를 들어 국내의 주요 지방의 최저온도와 최고온도 데이터를 활용한 방법으로서 일반적인 IC 부품의 온도 규격과 비교하여 온도시험 범위를 산정하는 방안에 대한 의견을 제시하고자 한다.

• 사상체질의학회지
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• 제22권2호
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• pp.135-142
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• 2010

1. Objectives: The purpose of this case is to report that a Tae-eumin patient diagnosed as drug-induced liver injury (DILI) caused by Galgeunhaegi-tang (Gegenjieji-tang) treated with Taeumjowe-tang reduced ephedra to 2g (Taiyintiaowei-tang) and then liver function test Results: improved. 2. Methods: We diagnosed him as Tae-eumin Exterior cold disease induced from the esophagus affected by cold. We made him stop taking Galgeunhaegi-tang (Gegenjieji-tang) and take Taeumjowe-tang reduced ephedra to 2g. (Taiyintiaowei-tang) 3. Results: After our treatment, the symptom and the liver function test Results: improved. 4. Conclusions: The wrong diagnosis of constitution and pathological syndromes can be caused drug-induced liver injury. Taeumjowe-tang reduced ephedra to 2g (Taiyintiaowei-tang) may have an effect on treatment of drug-induced liver injury of Tae- eumin.