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- 저자 : 金熙鍾 (검색결과 170 건)
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釜山地方의 降雨强度曲線에 對한 考察 및 洛東江流域의 D.A.D 解析
金熙鍾 東亞大學校 1964 東亞論叢 Vol.2 No.2
1. In this paper intensity-duration Curves are based on precipitation records of the Pusan Weather Bureau station. 50year Intensity-Duration equation: ???= 12516 ???=intensity mm/hr T+85.8 T=duration min 100year Intensity-Duration equation: ???= 13872 T+84.8 200year Intensity-Duration equation: ???= 15142 T+83.1 5. Inthis paper the curve of average precipitation per unit area in the Nak-dong Gang river basin was made by the Holton method. The mean rainfalls in the basin are measured by the basis of the Thiessen method and the Isohyetal. The equation is ???? R:average precipitation per unit area. A:basin area.
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金熙鍾 東亞大學校 1970 東亞論叢 Vol.7 No.-
It is the purpose of this study to investigate into current water demands in cities and Eup's(town), and to eatablish the relationship between domestic water use and such factors as the family economics, consumers ages, and alumbing fixturer provided for the house, etc... in the areas served with in the city of pusan. Daily per capita consumption ranged from 104 litres in the cases of large municipalities, to 92 litres for small as well as medium sized cities. The little difference of per capita consumption between the large and small cities is considered attributable to the fact that in most cities, the extension of the water supply systems has not been made to meet the increased demand due to the population growth. In 1969, it was found that domestic use of the water for pusan city averaged 36.92 lpcd (litre per capita per day). Which figure are exceeded even by those corresponding to a small city in Japan. The unusally high percentage of the unaccounted for water(47, 32 70 for pusan City) is one of the major factors for difficulties in the mangement of water supply systems. The correlation coefficient derived from the relationship between daily per capita consumption and monthly per capita income for a family indicated a high value of 0.9647, and the formula representing the relationship is as follows; Y=51+0.0066x providing that y is for daily per capita consumption, lpcd; and x for monthly per capita income, in Won. Daily per capita consumption in as much as domestics use is concerned, fluctuates month to month; August sees the peak and February the lowest. The ratio of the peak to the lowest is apprxoimately 1.56 in the case of the high income group, considerably differing from those corresponding to the medium income group of 1.75 and to the low income group of 1.74. The maximum monthly per capita per day consumption figures for domestic use forthe high income group, the meidum income group and the low income group are, respectively, 1.22, 1.28 and 1.32 times of the average daily consumption figures corresponding to the respective groups. A house provided with both the flush-water closet and the bath is consuming 195.48 litres on the basis of per capita per day figures, thus exceeding the aerage per capita per day consumption for the aerage high income group. A house with the bath only uses 115.01 lpcd which is comparable to the daily per capita consumption for the medium income group of 112.171pcd A family of 45-50 age group dominating uses 144.53 lpcd. While a family in which an age group over 50 out numbers consumes an average 88.48 lpcd. the least among the different age groups.
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단감나무로부터 분리한 탄저병 병원균 Colletotrichum spp.의 RAPD와 PCR-RFLP를 이용한 유연관계 분석
김희종,엄승희,이윤수 한국미생물학회 2002 미생물학회지 Vol.38 No.1
Colletotrichum spp.는 광범위한 기주범위를 갖는 다범성균으로 각종작물에 피해를주는 중요한식물병원진균이다. 최근 국내에서 널리 재배되고 있는 단감, 사과, 복숭아, 포도 등에 탄저병 이 발생하여 많은 경제적 손실을 초래하고 있다. 탄저병원균의 경우 기존에는 주로 형태적 특징이나 배지 상에서의 특성, 기주에 대한 병원성의 차이에 의존하여 분류를 해 왔다. 그러나 최근에는 병원균의 분류에 있어 문제점을 해결하기 위하여 분자생물학적 방법을 이용하고 있다. 이에 본 실험에서는 Random Amplified Polymorphism DNAs (RAPD)와 Ploymerase Chain Reaction-Restriction Fragment Length Polymorphism (PCR-RFLP) 기법을 이용하여 단감나무에 탄저병을 일으키는 균들 간에 유연관계를 밝혔다. 유연관계 분석결과 크게는2개의 그룹으로 나뉘었고 작게는5개의 그룹으로 나뉘는 것을 알 수 있었다. Colletotrichum species are important fungal pathogen that cause great damages on various host plant species worldwide. In Korea, Colletotrichum species cause massive economic losses on apple, peach, grape, and essecially, sweet persimon productions. In the past, Identification of the pathogen and the studies on the genetic relationships among the pathogenic isolates were mainly based on morphology, cultural characteristics, and the difference in pathogenicity. However, in recent years, these traditional methods have been replaced with molecular methods to solve the difficulty of classification on pathogens. Therefore, in this study, RAPD and PCR-RFLP methods were employed for the studies of genetic relationship among the different isolates of Colletotrichum species that cause damages on sweet persimon. As a results of genetic relationship analysis, Colletotrichum species tested were divided into two big groups or five small groups.
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金熙鍾 東亞大學校 1966 東亞論叢 Vol.3 No.-
Flood routing is an important technique necessary for the complete solution of a flood-control problem and for the satisfactory operation of a flood-prediction service. This paper described a storage-routing method on flood routing. The storage-routing method is an analytical method in hydrogic methods, techniques for solving the storage equation, using the storage functions in equation(2) storage equation. (I₁+I₂/2)t - (O₁+O₂/2)t=S₂-S₁ (1) Where ??=(I₁+I₂/2)t ??=(O₁+O₂/2)t S₂-S₁=△S Routing equation: ?? (2) ??=O(t+??) Where I: inflow O: outflow f: coefficient of inflow ψ(??): storage function ??: apperance storage for I and ?? ??: time leg t: time
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김희종,신동수,이승우,Kim, Hui-Jong,Sin, Dong-Su,Lee, Seung-U 한국수자원학회 1987 물과 미래(한국수자원학회지) Vol.20 No.1
교각은 때때로 국소세굴에 의해 손상받는다. 교각주변의 국소세굴 문제는 광법위하게 연구되었지만, 세굴심을 정량적으로 산정하는 것은 어렵다. 본연구는 정적세굴 조건하에서 형태로 배치된 반원 및 장방형 교각주변의 국소세굴에 대한 것으로 차원해석을 통하여 세굴심은 Re, Fr, 및 Ns등에 관계됨을 파악하여 무차원 시간에 따른 무차원 세굴심의 변화(상사수, 교각경과 길이 , 영각의 영향), 와도, 저항력에 따른 세굴심의 변화들이 세굴심산정공식을 얻기위해 실험적으로 연구되었으며 최대 세굴심 산정공식이 얻어졌다. Bridge piers are sometimes damaged by local scour. Although the problem of local scour around pier has been studied extensively, it has been difficult to estimate local scour depth quantitatively. This study is concerned with local scour around semicylindrical piers arranged in various types under the condition of clear water scour. Through dimensional analysis, it was found that scour depths were relative to Re, Fr, and Ns. In the case of semicylindrical piers, the variation of dimensionless scour depth with dimensionless time (effect of Ns, pier diameter and length, incidence angle) and the variation of scour depth with vortex intensity and resistance are investigated experimentally to obtain a formula. And formula for estimating the maximum depth of scour is obtained.
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金熙鍾,姜周復,朴雲龍 동아대학교 공과대학 부설 한국자원개발연구소 1982 硏究報告 Vol.6 No.2
It must be a significant problem of national standpoint as well as Busan city that the area of Hae un dae beach continues to diminish since 1976. This problem seems to be caused by the transportion of littoral drifts. Therefore, this paper intended to investigated parameters having best correlationship with the drift and be able to estimate transfer quantity in future, and besides to develop protection method to control the phenomena. 1. A primary factor of Haeun-dae seashore erosion is that the more wave steepness is, the more severe erosion is. When the value of slope is above 0.025 erosion occurs, and relatively accretion occurs when it is below 0.025. And other factor is that is that if constructions place near the shoreline, erosion will be more sever. So in case of landfilling the front of the mouth of Chun river, erosion seems to be more severe because shortage of supply-sand was caused by position deformation of the mouth of river. 2. The range of specific gravities of sands in Heaun-dae beach is 2.56-2.69. At No.23 a great deal of soil was involved, at No.33 clam-shell, sand soil were mixed and dam-shells were mainly included at No.44 3. The materials of sea-bed were sampled at point of 50m, 100m, 300m, 400m, 500m, away from the shoreline of No.23, No33, No.44, No.55, No.65 relatively. As a result of analysis of the specific gravities and median diameters, the specific gravities at both sides decrease according to the depth of water, and in the vicinity of the center a kind of cyclic phenomenon, which the specific gravities having the range of 2.76-2.27 increase and decrease in turns at intervals of 50m, appears. Near the center there are many clam-shell and S O₂, the component of pure sand is only 45.44%, so the specific gravities decrease to 2.27. 4. It seems that entrance and exit of hae un dae sand to Su-yeang, chun river from Song jeang line, recently it is assumed that it go to Hae un dae on the ground of insufficient evidence in diameter, specific gravity. 5. It was known that erosions happen is spring and autumn mainly. 6. Total erosion quantity is 15000m3 and the reduction area of beach sands is 2,230㎡ from July, 1981 to June, 1982 7. The equilibrium slope of beach sand had been step type untill 1982, 3. 17, but it has belonged to bar type since 1982.3, 17. 8. The specific gravities of the materials of sea-bed at the front of Kuk Dong hotel and the 3rd watchtower are about 2.70, Here, sands seems to be transported from land to sea at the latter, from west to south at the former. Chun-river is guessed to be a supply source of sands. But At the front of the 1stwatch tower, the specific gravity of sands is about 2. 57, which is relative light. considering that the specific gravity of sands is 2.573 in su-yeang river. At the front of Beach hotel the specific gravity is the smallest value of 2.54. Here, there are mainly clam-shells, so it is concluded that sands were transported from East-river「in song- Jeung. 9. In protection method of beach erosin, back sea dyke more than 10m(requirement model test) and construct 10m in width low step, is absorbed by it. It is to be desired that beach nourishment per 20,000㎥/year 10. To estimate the wave steepness and erosin quantity the equation, V= -338,727.3(H_0/L_0)+4898.2, was induced. 11. By the equation, V= -338727.3(H_0/L_0)+4898.2 total evosion quantify is 159,042㎥ from July. 79 to June, 82. Because Busan is the city surrounded by sea, it is absolutely necessary to be able to observe the deepwater wave height by means of wave height observation stations.
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韓國 河川의 流出에 關한 硏究 : 洛東江流域을 中心으로
金熙鍾 東亞大學校 1971 東亞論叢 Vol.8 No.3
Through this study, mathematical models were sought that would more accurately represent the correlationship between rainfall and run-off phenomena characteristic & in rivers in Korea, preceded by an extensive analysis of the existing rainfall and run-off records. The conclusion may be summarized as follows: 1. The period of wolf's number is 11 years. The period of the annual rainfall variations is 10 to 11years in Seoul and Pusan areas, and 12 years in Taegu area. The period of the annul maximum flood variations coindides with that of wolf's number; that is 11 years. 2. Annual run-off coefficient may be obtained by the equation: f=13.10F?? where f=annual run-off coefficient F=Horton's coefficient 3. The maximum daily precipitation within the catchment areas of the Naktong river may be estimated by the following equations: (1) Elevations between 0 and 84 meters; (A) Central area; y=0.74x+192.0 where y=maximum daily precipitation(mm) x=elevation(m) (B) Southern Area; y=1.32x+109.6 (2) Elevations between 85 and 180 m; y=0.837x+106.6 (3) Elevations above 180m; y=0.26x+131.3 4. the maximum annual precipitation within the catchment areas of the Naktong river may be estimated by the following equations: (1) Northen area: (A) Elevations between 0 and 80 meters; y=5.094x+735.6 where y=estimated annual precipitation(mm) x=elevation(m) (B) Elevations between 80 and 195 meters; y=1.097x+832.1 (C) Elevations above 195meters; y=2142-4.56x (2) South-east area: (A) Latitudes between 35。0' and 35。46'; y=1359.5-8.12x where x=the latitude minus 35。0' (B) Latitudes between 35。46' and 35。58'; y=7.53x+575.1 (3) South-west area: y=66954.76/x+23.03 5. More than two thoids of the annual precipitation is distributed among the months of June, July, August and September. 6. Rainfall intensity-duration relations applicable to some of the important points for a duration less than 120 minutes, are as follows: (A) Seoul area;(the han river) I??=467.7/(t+6)?? (Frequency interval of two years) I??=3681.3/(t+39)?? I??=1110/(t+5)?? I??=755.1/(t+4)?? I??=1633/(t+7)?? (B) Pusan area; (the Naktong river) I??=198.38/t?? I??=399.67/t?? I??=307.41/t?? I??=439.15/t?? (C) Taegu area(the Naktong river) I??=239.85/t?? I??=488.98/t?? I??=350.24/t?? I??=557.09/t?? 7. Rainfall intensity-duration relations applicable to some of the important points, for along duration, are as follows: 8. The hyetograph applicable to Seoul area may be represented by the following formula. I tb??=a[r??{(tb??+rb)??-(tb??+rb)??}+br?? 1/(tb??+rb)??-1/tb??+rb)??] 9. Precipitation is found to in approximately normal distribution. 10. The initial loses due to evaportranspiration and filtration, in the tributaries of the Naktong river may be estimated by the following relation: where r??b: initial losses(mm) q?? : discharge per unit catchment area, immediately prior to rainfall,(㎥/sec/㎢) 11. Recession coeffiecients applicable to Woekwan area of the Naktong river basin may be estimated by the equation; K=0.0018?? where K=recession coefficient Q??=discharge at the inflection point on the recession curve, ㎡/sec 12. The maximum floods for the tribularies of the Naktong river may be Jo-mulated as follows: (1) when q<0.01; Q=0.125 R??A (2) when 0.01<q??<1.0; Q=0.2833q??R??.A where Q=maximum flood flow, ㎥/sec q??=discharge per unit catchment area, immediately prior to rainfall, ㎥/sec/㎢ A=catchment area, ㎢ R??=rainfall intensity correspending to the concentration time, mm/hr
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