• Pediatric Gastroenterology, Hepatology & Nutrition
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• v.11 no.sup1
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• pp.136-142
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• 2008

In patients with functional gastrointestinal disorders, dietary factors have an important effect on the development or worsening of gastrointestinal symptoms. Therefore, nutritional advice is often needed for the treatment of these patients. Although no firm conclusions can be drawn from current studies, the use of low-fat diets can be recommended in patients with functional dyspepsia. Constipation can be treated with a high-fiber diet. There are few studies in irritable bowel syndrome patients with diarrhea. The diet recommendations must be applied to each patient depending on symptoms.

• Proceedings of the KWS Conference
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• 2004.05a
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• pp.258-260
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• 2004

현재의 피로강도 평가법에서는 각종 실험적인 방법 및 이론적인 방법 등 여러 가지 방법으로 피로강도설계를 하고 있는 실정이다. 그리고 이러한 피로특성에 대한 정확한 평가를 위해서 대상구조물에 작용하는 하중성분과 재료 및 구조적인 특성의 상호 연관관계에 대한 연구가 지속되어지고 있다. (중략)

• Proceedings of the Korean Ceranic Society Conference
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• 2000.10a
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• pp.159.1-159
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• 2000

• Proceedings of the Korean Society of Crop Science Conference
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• 2002.10a
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• pp.56-56
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• 2002

• Proceedings of KOSOMES biannual meeting
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• 2017.11a
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• pp.258-258
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• 2017

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 2004.11a
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• pp.251-251
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• 2004

• Proceedings of the Korea Institute of Convergence Signal Processing
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• 2000.08a
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• pp.53-56
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• 2000

본 논문에서는 ISM 대역에서 동작하는 상용화된 RF 모듈을 사용하여 근거리 통신용 송수신 시스템을 구현하고 그 특성을 측정하였다. 기저 대역 데이터를 발생시켜 RF 모듈에 연결하여 전송하고, 수신측에서는 RF 모듈에서 복조된 데이터를 오실로스코우프를 사용하여 확인하였다. 본 실험에서 사용한 RF 모듈은 424MHz부터 429MHz까지의 영역에서 동작하며, FM 방식을 사용한다. 본 대학의 산학협동관 건물내에서 측정한 결과 거리에 따른 신호 감쇠와 신호 수신 감도를 파악할 수 있었으며, 이를 이용하여 건물 내에서의 근거리 통신에 적용할 수 있음을 확인하였다.

• International Journal of Highway Engineering
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• v.8 no.2 s.28
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• pp.1-12
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• 2006

An existing Steel pipe, Cast iron pipe and Concrete pipe is can not escaped from aging, specially Metal tube is causing many problems that the quality of water worse is concerned about many rust and mike efficient use of preservation of water. The use of Glassfiber Reinforced Plastic Pipe(GRP PIPE) should be one of the possible scheme to get over these problems. The GRP PIPE has an excellent resistance power and the life is lasting from 50 to 100 years roughly. It's to be useful as a result of high durability and a good construction work also it is a light weight therefore can be expected to short the time of construction and man power. In this research, to executed the small-scaled model test, in-situ model test using CLSM of in-situ soil and to evaluated the stress - strain of the pipe also try to estimated how useful is. From the model test in laboratory, the vertical and horizontal deformation of the GRP PIPE measured in six instance using 200mm and 300mm in diameters. The value of experimentation, theory, analysis got the same results of the test, but the vertical and horizontal deformation gauged in small and the earth pressure was almost zero using CLSM of in-situ soil..

• Journal of the Earthquake Engineering Society of Korea
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• v.6 no.2
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• pp.51-61
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• 2002

In this research, a numerical algorithm is developed for the response analysis of burined pipelines considering longitudinal permanent ground deformation(PGD) due to liquefaction induced lateral spreading. Buried pipelines and surrounding soil are modeled as continuous pipelines using the beam elements and a series of elasto-plastic springs represented for equivalent soil stiffness, respectively. Idealized various PGD patterns based on the observation of PGD are used as a loading configuration and the length of the lateral spread zone is considered as loading parameter. Numerical results are verified with other research results and efficient applicability of developed procedure is shown. Analyses are performed by varying different parameters such as PGD pattern, pipe diameter and pipe thickness. Through these procedures, relative influences of various parameters on the response of buried pipeline subject to longitudinal PGD are investigated.

• Journal of the Korea institute for structural maintenance and inspection
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• v.11 no.2
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• pp.77-84
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• 2007

The elastic buckling strength of a corrugated pipe made of orthotropic material was evaluated. The height and length of a corrugated wave and the thickness of the pipe were considered as factors affecting the buckling strength of the pipe. And also, the ratio of the longitudinal stiffness and transverse stiffness were considered as parameters affecting on the buckling strength of a pipe made of orthotropic material. Buckling strengths of various corrugated pipes with different shapes and stiffness ratio were evaluated by FE analyses. And a formula to estimate the elastic buckling strength was suggested by regression of FE analysis results. Analysis results show that a corrugated pipe has superior buckling strength to a general flat pipe and the suggested formula estimates accurate buckling strength of the corrugated pipe made of orthotropic material.