錦江河口의 潮流와 鹽分變動

金榮燮,洪聖根 군산대학교 1984 群山水産專門大學 硏究報告 Vol.18 No.3

The tidal currents and the salinity variations of the Keum River estuary were investigated on the basis of field observations on April and August, 1983. In the tidal current observations, the semidiumal tidal current prevails and its rotary direction is revealed the count-clockwise in this area. Also, the apparently constant current which is thought to be generated by the out-flow of the Keum River is found to flow from the Kansan inner harbor to Janghang harbor with the speed of about 30 cm/sec. In addition, the salinity shows the peak at the high water, and then it begins to decrease gradually, and alas the lowest value 1-2 hours after the low water.

扶餘地方의 안개에 關한 分析

蘇鮮燮,金盛換 공주대학교 사범대학 과학교육연구소 1988 과학교육연구 Vol.20 No.1

Fog is various induced by a sea, a lake a river. an artificial dam and solar energy which supply the vapor. There are a lot of fog in Puyo because Puyo is surroun-ded by the three sides on the river and there are many reservoirs and farmlands. In spring and autumn, radiation fog is generated from a heavy daily temperature difference. In winter, evaporation fog is generated from the deviat-ion of the water temperature on the Baek-ma river and atmospheric temperature. Furthermore, generation of fog relates to the wind direction according to the position of vapor sources. So, if there are weak wind velocity, much solar energy big deviation of daily temperature, no freezing in winter, a lot fog seem to be generated.

T형 합성보의 Shear Connector 형태에 따른 전단내력 평가

이상업,표현석,김도훈,이창남,김상섭 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2(구조계)

Stud connector has been used by shear connector of composite beam. Shear connector is important element to heighten composition rate of composite beam. This study based on the experiments of 15 specimens by Push-Out Test. In this paper, we analyze shear connector of other form instead of stud connector through an experimental study and wish to present application possibility to T-type Steel Composite beam.

독립호우 결정을 위한 한계무강우 지속기간 추정

신문섭,박상덕 강릉대학교동해안지역연구소 1994 東海岸硏究 Vol.5 No.2

한계무강우 지속기간의 변화가 강우사상 계열의 확률분포에 미치는 영향을 분석함으로써 독립호우사상의 결정을 위한 한계무강우 지속기간 추정기법을 연구하였다. 강릉지점의 한계무강우 지속기간은 약 10∼11시간으로 판단되었으며, 강우사상 계열은 2변량 정규분포, 2변량 대수정규분포, 그리고 제곱근변환 2변량 정규분포에 적합될 수 있었다. 또한, 강릉지점의 강우사상 계열의 강우지속기간이 강우량보다 더 민감하게 한계무강우 지속기간의 변화에 대하여 반응하였다. A estimation of the critical duration between storms (CDBS) to decide the individual storm events was studied by analyses of the effects of the variations of CDBS to the probability distribution of annual maximum rainfall events. The CDBS in Kangnung site was estimated about 10∼11 hours, and the series of annual maximum rainfall events were fitted in the bivariate normal distribution, the bivariate log-normal distribution, and the bivariate square-root-normal distribution. At Kangnung site, the rainfall duration was more sensitive than the rainfall depths with the variation of CDBS.

강판을 이용한 T형 합성보의 구조적 거동에 관한 연구

김상섭,이지운 한국기술교육대학교 2005 論文集 Vol.11 No.1

Recently reinforced concrete and steel structures are broadly in use and compounding them composite structure is developed and the use of it increases by degrees. A composite beam has long been recognized as the most economical element for the floor system built of a concrete slab and a steel section. T-type Steel Composite beam(TSC beam) using U-type steel plate is a form of reinforced concrete beam covered by U-type steel plate and during construction steel plate functions as forms and tension members and increases flexural stiffness by filling concrete.

동경만의 생태계모델 결과와 위성자료의 비교연구

이성애,杉森康宏,김영섭 한국지리정보학회 2004 한국지리정보학회지 Vol.7 No.1

일본 동경만의 흐름양상과 생물플럭스의 분포특성을 역학-생태계모델을 통해 구현하고, 위성자료에서 얻어진 영상과 비교 분석하였다. 모델의 초기치와 경계치는 2001년 3월의 관측값들을 이용하였다. 운용된 모델 결과에서 얻어진 동경만의 흐름양상과 염분분포 등은 선행연구들과 대체로 일치하며 모델의 재현성을 어느 정도 신뢰할 수 있었다. NOAA/AVHRR에서 추정된 SST는 모델 결과에 비해 전체적인 분포양상은 아주 유사하였으나, 만입구에서 2.5℃정도, 내만에서 0.5℃ 정도 높게 추정되었다. 위성에서 얻어진 클로필-a 분포는 모델결과의 식물플랑크톤분포와 그 양상이 비슷하나, 농도는 상당한 차이가 나는 것을 확인할 수 있었다. 이러한 불일치에 관해서는 앞으로도 계속적인 연구가 수행될 예정이다. The hydro-dynamical and ecological coupled model were applied in the Tokyo Bay, to evaluate the flow pattern including water quality parameters and the distribution of biomass flux, and to compare with the results obtained from the satellite data during March 2001. The flow pattern and salinity distribution obtained from the present model were nearly identical with those of the previous studies. SST from NOAA/AVHRR was 2.5℃ higher than model reuslts in the mouth of bay and 0.5℃ lower than model results in inner bay, respectively. It was found that the concentration of chlorophyll-a estimated from SeaWiFS was considerably higher than that of model result, regardless similar distribution pattern. This disagreement will be studied through the more elaborate investigation in the future.

신형상 테크를 사용한 슬래브의 시공하중에 관한 실험적 연구

김상섭,허용수,김성진 한국기술교육대학교 2006 論文集 Vol.13 No.1

Increasing in use of deck plates is accelerated by a manpower shortage and the high cost of construction. Some of problems including fire resistance, waterproof, and low corrosion can be solved by development of new deck plates. This paper evaluates the structural performance of the Deck with Lath and Mortar which metal laths instead of galvanized steel sheet is covered by mortar.

압축력이 작용하는 Dome 구조의 말뚝머리보강 효과에 관한 연구

김상섭,표현석 한국기술교육대학교 2004 論文集 Vol.10 No.2

There are many kinds of pile foundations that propagate structural loading to ground, by recently in most case steel pile is used. In the case of steel pile the structural behavior of pile cap which combined with spread footing is important. Three kinds of forces, vertical force, horizontal force and moment are acted on pile cap. In this paper consider that acting vertical forcepressure on pil cap. This study based on the experiments of 4 specimens by steel pile cap test. We would like to inspect the property of pile cap reinforcement composed of domed structure by experiment for vertical pressure of it and analysing the behavior with a computer program.

XC-68탄소강의 베이나이트 변태에 관한 연구

장홍섭,김성진,오명훈 金烏工科大學校 1998 論文集 Vol.19 No.-

In this study, austempering process of AISI 1070 was examined in order to establish bainitic transformation mechanism of XC-68 carbon steel. The effect of volume fraction and morphology of bainite on the microstructure and mechanical properities of XC-68 carbon steel were also investigated. The banite volume fraction and morphology were controlled by isothermal holding time at four levels of bainite transformation temperature. When holding time at each temperature increased. volume fraction of bainite was also increased, while that of martensite decreased. As a reults, increasing of holding time produced decreasing of hardness. It was also found from hardness and wear test the lower bainite microstructure was more desirable than the upper bainite microstructure to produce a good combination of wear resistance and strength.

신수혈의 침자극과 황기약침이 실험용 생쥐의 면역활성물질인 IL-1 α의 遺傳子發現에 미치는 影響

申相習,朴元煥,洪文燁,李泰均,崔達永 대한동의병리학회 1999 동의생리병리학회지 Vol.13 No.2

체내의 환경을 항상적으로 유지하는 생체방어체계에는 면역활성물질이 있으며, 이러한 면역활성물질의 적절한 발현이 생체의 항상성을 유지하는데 작용하게 된다. 이에 한의학에서는 생체의 항상성 유지와 체내의 면역력 증가를 위해 많은 요법들이 시행되어 왔는데, 그 중 자침요법과 약침요법이 많이 응용되고 있다. 그러나 침자극과 약침의 효과에 대한 기전은 기대하는 만큼 제시되지 못하고 있다. 이에 본 논문은 침자극과 약침의 효과에 대한 기전을 밝히는 방법의 일환으로서 면역활성물질인 IL-1α가 補腎臟, 振氣化, 祛水濕, 强腰脊, 益水壯火 등의 穴性이 있는 신수혈(BL23)의 침자극과 황기약침처치를 통해 어떻게 발현하는가를 관찰하였다. 그 결과, 면역 증강 작용을 나타내는 cytokine IL-1α 에 대한 침자극의 반응은 관찰되었고, 황기약침에 의한 IL-1α 의 발현은 명확하지 않았다. 그러므로 신수혈을 이용한 cytokine IL-1α의 추적은 황기약침의 효과보다 침자극의 효과에 대한 근거를 추측할 수 있을 것이며, 뿐만 아니라 침자극에 의한 면역반응정도를 통해 질병의 진행상태를 나타내는 진단지표로서 활용가능성이 있을 것이다. Acupuncture and Radix Astragali aqua-acupuncture stimuli have long been used to cure human diseases. However, it still remains to be unknown on its action mechanism, physiological and biochemical aspects. Thus, many attempts were made to show the scientific background covering the above mentioned mechanisms. Most recent studies show that these tests improve blood circulatory system and increase leucocyte counts. In this study, we have applied the acupuncture stimuli to mouse Sinsu(BL23), which is a stimulative point of oriental medicine, to see if cytokine such as IL-1α can be detected. Mice were treated with lipopolysaccharide(LPS) for inflammation induction, and then reverse transcriptase-polymerase chain reaction (RT-PCR) using each primer set was performed to trace the amounts of mRNA. The results are as follows ; 1. The RT-PCR product using IL-1α primers was detected as 450 bp on agarose gels and the IL-1α gene was not expressed in normal mice at 15 min after the removal of acupuncture. However, it was gradually increased indicating a faint expression after 30 min. 2. IL-1α was expressed in LPS-treated mice 30 min after the acupuncture was pulled out, and expressed most highly at 3 h after the removal of acupuncture. The gene expression of LPS-treated mice were more effective than those of normal mice. 3. IL-1α was not expressed in normal mice and LPS-treated mice from 30 min to 3hs. after Radix Astragali aqua-acupuncture stimulation. Therefore, a tracing the gene expression of cytokine IL-1α can be used more not only for a basis of the effect of acupuncture stimulation but a diagnosis guide through the immunological action than the effect of Radix Astragali aqua-acupuncture. Moreover, we need to further study the cytokine's expression in Radix Astragali aqua-acupuncture stimulation.