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소선섭,최승진 公州大學校 基礎科學硏究所 2004 自然科學硏究 Vol.11 No.-
The Korean Peninsula is located in the eastern coast of continent and takes the influence of the periodic wind periodically thunderstorm distribution to appear therefore various characteristic. The spatial and temporal distributions of lightning are examined over the contiguous chung- chong - do from 1971 to 2000 using data from the Korea Meteorology Administration(KMA). Analysis area are 11 site of the chungchong province(Daejeon, Seosan, Chongju, Chungju, Chupungryoung, Cheonan, Buyeo, Boryoung, Keumasn, Jecheon and Boeun Meteorological Observation Station). A lightning days occurrence happened in all area over three hundred times. lightning days installment show the trend to increase gradually and similiar pattern in all area. Annual lightning days, seasonal and temporal lightning frequency and monthly lightning days distribution are documented. Maximum lightning frequency and lightning days are found in Daejeon. Also the lightning happened at the winter much at a shore area And the lightning happened at the summertime much at an inland area. The temporal distribution was revealed that we happened afternoon usually much. But much shore province's lightning were at the dawn relatively an occurrence low.
蘇鮮燮,劉性洙 공주대학교 사범대학 과학교육연구소 1987 과학교육연구 Vol.19 No.1
This is the study on net effect of the wind to protect some kinds of crop from harm. Nets used in the research are an indigo-net, a wirenetting, and a green net. Its permeability in each is 20%, 23%, and 33% respectively. Experiment results are as follows: Crops frequently seen in our surroundings with thinner stems, more leaves, and larger nuts are more influenced by the wind. And among the three kinds of nets used, the effect of the wind is the greatest in the indigo net. Of many factors which reduce the velocity of the wind, the permeability is the most important one. But quality and standard of nets also influence it.
蘇鮮燮,鄭亨錫 공주대학교 사범대학 과학교육연구소 1993 과학교육연구 Vol.24 No.1
Variation rate of precipitation on the regression line of each district are shown by regression inclination of precipitation and a analysis of the amount of precipitation observed by all the meteorological observatory for eighty-four years(1906∼1989). The results of studying are the following: 1) The annual mean amout of raining is 1222.6mm. The most amount of precipitation is 253.3mm in July and the least amount of it 36.1mm in December. 2) The districts over 1222.6mm (the amount of annual mean precipitation include) island, the south seashore and the central inland. 3) The districts under it`s annual mean include the west seashore and Yongdong area. 4) The season with the most amount of precipitation is Summer(638.3mm). 5) The season with the least amount of precipitation is Winter(107mm). 6) The amount of precipitation between Spring and Fall is almost the same(260.8mm in Spring: 252.5mm in Fall). 7) The annual mean variation rate of precipitation is 2.07. 8) The highest variation rate of precipitation during the yesr is 6.07 in August, the least of it 0.12 in January. 9) The districts over annual mean(2.07) in variation rate of precipitation include several areas of west seashore and central inland. The districts under it`s mean include the estern seashore and small urban areas. 10) The highest variation rate of precipitation is 3.10 in Summer and the lowest of it is 0.62 in Winter. 11) The variation rate of precipitation by season is 2.31 in Fall and 1.86 in Spring. 12) The highest amount of precipitation is shown the more variation rate of it.
蘇鮮燮,梁文錫 공주대학교 사범대학 과학교육연구소 1994 과학교육연구 Vol.25 No.1
Chungju district is licated in the mid-stream of the Namhan river, where Chungju Multipurpose Dam was constructed in Novemder, 1984, with the result that the increased surface area of the lake caused water to vaporize more than before, and so the fog appearance before and after the Dam showed the charateristic variety of fog as follows: 1. The frequency of the fog appearance per year increased in 25.6 times more than before, the steam fog after the Dam appeared more frequently, and fog remained for 7 hours and 11 minutes longer than before, while the fog-remaining time per fog appearance frequency decreased in 46 minutes. 2. The fog appeared almost at the same time before and after the Dam, but the time the fog disappeared grew one hour earlier after the Dam. 3. 69% of the whole fog appearance was the ill-visualized fog, the visual range 0. The fog appeared most frequently in the west wind before the Dam and in the west-northwest wind after the Dam. 4. There were four types in the fog appearance patterns: the radiation fog, two types of the steam fog, and the radiation-steam complexed fog.
李瑄根 慶熙大學校 1958 論文集 Vol.1 No.-
Having taken the reins of government, Taiwonkoon reigned over Lee dynasty with a reformative policy, defeating the king's maternal relatives, and endeavoured to pave a innovatory way, while he abolished the long-age corrupt system. His policy is also an example of a struggle for political power as well as that of the King's maternal relatives. He wilded power on autocratic and mighty adminstration against his polititical rivals who had hold the assembled cabinet. There is a good contrast in the adminstration of these two oponents: Taiwonkoon ruled his country with confidence without any attention to his own honour or popularity, but the maternal relatives with conspiracy and trick. Therefore, it is indisputable that he raised somewhat improved consequences to his reformative policy of home affairs. On the contrary to the home affairs, Taiwonkoon on his foreign policy was so ignorant of the then iuternational affairs and the situations of the world that his autocratic and mighty administration induced to drop rather into the international troubles. What a headless and imprudent blunder his foreign policy was! In spite of his foreign policy must be opportunism in its way, Taiwonkoon has it in contemplation to check the rushing streams of the western influences, standing to the unnegotiable national isolation policy. Judging from personal circumstances, it seems in a way very natural to apply the rigid seclusionism in his foreign plank, by which Lee dynasty brought about the more disorder and misfortune for her foreign policy, necessary for an elastic adninistration. I hereof look over the historical sketches and the relative merits of his inflexible policy, dividing it into some items.
베나르-레일라이형 열대류의 발생조건과 대류세포의 안정도
蘇鮮變,尹秦錫,金基石,羅基生,李敏子 공주대학교 기초과학연구소 2000 自然科學硏究 Vol.9 No.-
베나르-레일라이형 대류의 형태는 정상2차원, 정상3차원, 비정상3차원 대류로 구분되는데 본 실험은 대류의 발생조건과, 같은 점성의 유체에서 높이별 대류세포의 안정도, 그리고 대류의 운동형태가 각 점성에 따라 레일라이 수 및 프란틀 수에 얼마만큼 의존하는지 분석했다. 위 실험을 통해 다음과 같은 결론을 얻었다. 같은 점성에서 높이가 높아질수록 대류의 형태는 정상3차원 대류에서 비정상3차원 대류로 나타났다. 같은 점성의 유체에서 레일라이 수는 유체높이가 커짐에 따라 증가하고, 유체의 점성이 커질수록 감소하는 경향이 있다. 즉 프란틀 수가 증가할수록 레일라이 수는 감소한다. The form of convection of Benard Reyleigh type is devided into normal two dimension, normal three dimension and abnormal three dimension. This experiment analyzed the stability of convection-cell according to height in viscous fluid lilie the developemental condition of convection and how much the form of convectional movement depends on the Reyleigh number and pandtl number in proportion to each viscosity with the experimental equipment above. We had the following conclusion below from the experiment. In the same proportion of viscosity, the form of convection was changed from normal three dimentional convection to abnormal three dimensional one as the altitude gets higher. It incliues that the number of Ra increases as the heigher of fluids gets higher and that of decreases as the viscosity of fluids increases. In conclusion, the Reyleigh number decreases as the prandtl number.
點熱源이 삽입된 回轉圓筒三重水槽에서 나타나는 内部 溫度特性
소선섭,김명환,진수광,박세민,이근수,정훈희 公州大學校 基礎科學硏究所 2004 自然科學硏究 Vol.11 No.-
회전원통삼중수조의 대류조에 점 열원을 삽입한 후 유체의 내부 온도특성을 알아보기 위해 일정 회전수에서 온도자료를 얻었다. 이 자료의 시각적 표현은 IDL(The Interactive Data Language)를 이용하였다. 실험의 분석결과 열원 가열시 표면 파수는 변화가 없었으나 파의 온도 진폭은 커지고, 마루부분이 넓어지는 경향이 보였으며, 자오면 온도구조에서 열원은 외벽보다는 내벽의 온도를 높이는데 영향이 더 크게 나타났다. Temperature data got at definite rotating number for internal temperature special quality of fluid after insert point heat-source in convection party of rotating triple annulus. Image expression of data use IDL(The Interactive Data Language). Analysis result of experiment when heat-source heating surface wave number did not exist change, but temperature amplitude of wave expanded with heating, and a ridge part appear expansion tendency and heat-source at meridian plane temperature structure appeared inside temperature rises than outside that influence more big.
상접촉법에 의한 BSA의 역추출 효율 : pH와 염의 효과 Effects of pH and Salts
노선균,김승재,신재순,강춘형 한국공업화학회 2003 응용화학 Vol.7 No.1
In this work, the effects of pH and salt and its concentration in the excess aqueous phase on the back extraction efficiency of BSA(Boivne Serum Albumin) using a reverse micellar system of the organic phase contains AOT(sodium di(2-ethlhexy) and iso-octane, was extensively examined. In this effort, BSA solubilized in the reverse micells by means of the phase-transfer method was back-extracted by bringing an excess aqueous phase into contact, When 1:1 salt such as KCL or NaCl was added, BSA could be effectively back-extracted to the wxcess aqueous phase at a pH higher than its isoelectric point pI.
蘇鮮燮,許正範 공주대학교 기초과학연구소 2000 自然科學硏究 Vol.9 No.-
전세계적으로 낙뢰는 연간 100억회 정도의 발생과 이로 인한 인명 피해가 2000∼3000명에 이르고 있고,낙뢰에 대한 관심도가 점점 높아지고 있다. 이에 공주지역의 낙뢰에 대한 대비책인 피뢰침 설치 비율을 분석해 보았다. 모비율 점추정으로 피뢰침 설비를 추정해본 결과 공주 시외지역의 피뢰침 설치율은 0.02%를 보이고 있고, 시내지역은 0.032%를 보이고 있다. 공주 시외지역의 피뢰침수는 489개이고 시내지역은 613개를 보이고 있다. 결과적으로 공주지역의 낙뢰에 대한 대비책은 미비한것을 알 수 있다. All over the world, the Thundervolts in which take gradually a growing interest strike practically an annual 10bilious times, therefore the hatural disaster makes 2000 ∼ 3000 casualties. We made a vigorous examination of the ratio of the establishment of the anti-volt tower in Kong-ju, by way of precaution against the thundervolts. It is estimatied that the ratio of the suburbs of Kong-ju is 0.02% and the city is 0.032% by population rate of point estimation. The number of the anti-volt tower which is already established in the suburbs of Kong-ju is 489 and the city is 613. For that reason, there is unprepared far the Thundervolts in Kong-ju.