• 제목/요약/키워드: Water congestion

검색결과 68건 처리시간 0.032초

터널 화재진압시스템 도입에 따른 재난 안전비용의 경제성 분석 연구 (A Study on the Economic Analysis of Disaster Safety Costs by the Water-Bulwark System against the Tunnel Fire)

  • 백충현
    • 대한안전경영과학회지
    • /
    • 제25권2호
    • /
    • pp.129-138
    • /
    • 2023
  • This study attempted to analyze the comparative advantage in terms of disaster safety costs in verifying the effectiveness and economic feasibility of the high-performance water-bulwark system in the pole tunnel, which was recently promoted as a part of the acceleration of vehicles. The tunnel to be analyzed was divided into a short tunnel(Anyang, Cheonggye) and a long tunnel(Suraksan, Sapaesan). As a result, it was analyzed that 25% of the improvement effect would occur if one lane was secured by applying the Water-Bulwark System. It was analyzed that this is because the time value cost, which accounts for a large proportion of the traffic congestion cost of short tunnels and pole tunnels, differs depending on the congestion time and traffic volume, not the length of the tunnel.

뱀장어 아기미 울혈증에 관한 연구 (An investigation of the congestion on the gills of eel)

  • 김영길;최민순;박성우;이근광
    • 한국어병학회지
    • /
    • 제7권2호
    • /
    • pp.161-171
    • /
    • 1994
  • 뱀장어의 울혈증 발병 원인구명을 위하여 서해안 지역 5 개 양만장을 대상으로 아가미 울혈증 발병현황과 수질등 역학조사를 실시하였고, 한편으로는 스트레스(handling 과 수온차) 및 병어에서 분리한 아가미 마쇄액을 건강어의 복강에 주사하여 울혈증 발병률과 CHSE-214 에 접종하여 세포변성을 조사하였다. 조사한 양만장의 아가미 울혈증 발병률은 30-80%로서 사육시의 수온과 선별시의 수온차가 클수록 발병률이 높았으며, 수질환경과 본증의 발병과는 뚜렷한 상관관계가 없었다. 또한 발병률이 높은 양만장의 뱀장어는 Ht, Hb, Tp, Alb, Mg 및 Glu 치등이 낮은 반면 GOT, GPT, Ca 및 Met-Hb 치등은 높게 나타나는 경향을 보였으나, 반드시 아가미 울혈증에 비례하여 증감되지는 않았다. 스트레스(handling 과 수온차)를 가함에 따라 아가미 울혈증이 실험적으로 유발되어졌으며, 발병률은 50-70% 이었다. 이러한 스트레스 조건하의 어류의 혈액학적인 성상은 울혈증 발병빈도에 비례하여 Ht, GOT, GPT, Met-Hb, Alb 및 Glu 치등은 증가되었으나, Tp, Hb 및 Mg 은 감소하는 경향을 보였으며, 온도차가 클수록 cortisol 량이 증가되는 경향을 보였다. 그러나, 병어의 아가미 마쇄액을 복강주사 및 CHSE-214 에 접종하였던 바 각각 울혈증의 발병 및 세포변성이 전혀 관찰되지 않았다. 이러한 결과는 선별시 handling 과 수온의 급변이 혈중 cortisol을 상승시켜 혈액의 전해질 변화를 초래케하므로써 혈액의 흐름을 완만하게 되고 동정맥계로의 혈액유입량이 증가하게 되어 중심정맥동이 확장되므로써 울혈이 형성되는 것임을 시사한다.

  • PDF

수상운송로로서 한강의 이용가능성에 관한 연구 (On the Availability of Han river as Water Transport Route)

  • 최강일;노홍승;이철영
    • 한국항만학회지
    • /
    • 제7권2호
    • /
    • pp.37-60
    • /
    • 1993
  • Because of the rapid growing traffic volumes of cargo, especially between Seoul and Inchon, and lack of investment into transport infrastructure in the past, in Kyong-in area have suffered from the serious traffic congestion in the public-road and the express-way network, But the further expansion of the traffic volume in near future is difficult due to burden of the higher expansion of the traffic volume in near future is difficult due to burden of the higher construction cost. Although the traffic congestion on the Kyung-in railway, is not very serious comparing with the road sector, the shortage of capacity on some main lines becomes emerged as a problem as railway traffic has increased. Unlike these two modes, the water transport, which has been paid relatively less attention for commodity transport in Kyong-in area, has not any constaint in this respect. Han river has been used as a water transport route in Chosun Dynasty which is called Cho-wun. This paper therefore aims to propose the availability of Han river as the alternative water transportation mode, in order to decrease the congestion between Seoul-Inchon by considering the construction of Kyong-in artificial water channel in near future. In this paper, we investigate the availability of Nanji-do as the physical distribution depot connecting with the circulation express way in the national capital distribution depot connecting with the circulation express way in the national capital. We also estimate the traffic volume by using the push-barge carrier (300DWT) in the same channel through the simulation under some assumptions such as ship's turnaround time, speed, etc.

  • PDF

급성 열사병으로 폐사한 아프리카 사자의 병리조직학적 소견 (Histopathological Findings of Sudden Death Caused by Acute Heat Stroke in an African Lion(Panthera leo))

  • 김규태;조성환;손화영;류시윤
    • 한국임상수의학회지
    • /
    • 제24권1호
    • /
    • pp.73-75
    • /
    • 2007
  • Heat stroke can lead multi-organ damage with hemorrhage and necrosis in the lungs, heart, liver, kidneys, brain and Ut. Heat stroke occurs when the elevation of core body temperatures induce a failure of thermoregulatory mechanism. A four-year-old male African Lion(Panthera leo) showed clinical signs such as panting, tachycardia, hyperthermia, unconsciousness and mydriasis under He hish humidity and hot weather. Clinical treatment and pouring cool water was unsuccessful. Grossly, congestion of lungs and pleura was observed. Yellowish discoloration was observed in the renal cortex. Microscopically, the coagulative necrosis in kidney and congestion of lungs and spleen were observed. In our knowledge, this case was closely associated with acute heat stroke.

뱀장어 아가미 울혈증에 관한 연구 III. NaCl처리가 울혈증 치료에 미치는 영향 (Study on congestion of the gills in cultured eels Anguilla japonica III. Effect of NaCl treatment on congestion of the gills in cultured eels, Anguilla japonica)

  • 최민순;박관하;최상훈;김영길;김종면;조정곤;장선일
    • 한국어병학회지
    • /
    • 제8권2호
    • /
    • pp.111-118
    • /
    • 1995
  • 뱀장어에 인위적으로 스트레스를 가하여 아가미 울혈증을 발생시킨 후에 NaCl 처리에 따른 CVS의 울혈증의 치료효과 및 혈액성상의 변화에 미치는 영향을 조사하였다. 스트레스 직후에 고빈도의 발병율을 보였던 아가미 및 간의 울혈증은 염처리 후 3일째 까지는 감소되었으나, 4일 이후에는 별 영향이 없었다. 혈액성분중 스트레스 후 증가되었던 Ht, Met-Hb, $Ca^{++}$, GOT, GPT, LDH 및 glucose치 등과 감소되었던 $Mg^{++}$ 및 Hb치 등은 염처리 3일까지는 회복율이 촉진되었으나, 그 이후에는 큰 차이를 보이지 않았다. 그러나 알부민 및 총단백치는 염처리 기간동안 별 변화가 없었다. 이상의 결과는 스트레스에 의해 발병된 아가미 울혈증에 대한 염처리법은 초기 3일까지는 효과가 있으나, 그 이상의 기간에는 전혀 효과적이지 못함을 보여준다.

  • PDF

서울 중랑구 소재 어린이집 소아의 아토피 피부염 이환 여부에 따른 기혈수(氣血水) 변증(辨證) 유형 관찰 (Correlation Study between Atopic dermatitis and Comprehensive diagnosis of Qi Blood Water in Seoul Jungnang-gu nursery school children)

  • 신윤진;김규석;김윤범
    • 한방안이비인후피부과학회지
    • /
    • 제22권2호
    • /
    • pp.176-185
    • /
    • 2009
  • Objective: The aim of this study was to investigate the correlation between atopic dermatitis and a comprehensive diagnosis of Qi Blood Water in children with or without atopic dermatitis. Methods: We surveyed 206 children in Seoul Jungnang-gu nursery by reviewing the questionnaires following a medical examination. Comprehensive diagnosis of Qi Blood Water was investigated by questionnaires and composition scores and total scores were calculated from the symptom scores. Atopic dermatitis was diagnosed by ophthalmo.otolaryngo.dermatologist and atopic dermatitis symptom was measured by a Visual analogue scale(VAS). Comparisons between the atopic and non-atopic groups were made based on the atopic dermatitis symptom scale, composition scores and total scores. Results : 1. Of the 206 patients, 153(74.27%) were included in the non-atopic group, while 53(25.73%) were included in the atopic group. There was no difference in average age between the two groups. 2. The atopic dermatitis symptom scale of atopic group(3.21$\pm$2.018) was significantly higher than that of non-atopic group(0.04$\pm$0.28). 3. Qi deficiency, Qi stagnation, Blood stasis and Water congestion scores and the total scores of the atopic group were higher than those of the non-atopic group, but it was not significant. 4. The Qi regurgitation and Blood deficiency scores of atopic group were significantly higher than those of the non-atopic group. 5. There was a highly significant correlation between the atopic dermatitis symptom scale and Qi regurgitation scores, and between the atopic dermatitis symptom scale and Blood deficiency scores. Conclusion : Atopic dermatitis seems to have a special feature reflecting the state of comprehensive diagnosis of Qi regurgitation and Blood deficiency in children.

  • PDF

평택항 접근수역의 해상교통시스템 개선에 관한 실증적 연구 (An Empirical Study on the Improvement of Marine Traffic System at the Pyeong-taek Adjacent Areas)

  • 윤병원;박진수;박영수
    • 해양환경안전학회지
    • /
    • 제21권5호
    • /
    • pp.507-514
    • /
    • 2015
  • 본 연구는 평택항 도선구 주변해역의 해상교통 시스템 개선방안을 찾고자 하는 연구로서, 평택항의 도선사와 기항 선박 선장들의 전문가적 시각에서 평택항 도선구 주변의 교통환경을 분석하였다. 또한 장안서 도선사 승하선 구간과 입파 도선사 승하선 구간의 위해요소를 실증적인 관점에서 분석하여 다음과 같은 해상교통시스템 개선 방안을 제안하였다. 먼저 목덕도 분리수도와 안도수역에 분리수도 설정을 제안하였고, 장안서 분리수도의 폭을 조정하여 혼잡도를 개선함은 물론 분리수도 외측경계선에 등부표를 설치하여 어구가 침범하지 못하도록 제안하였다. 또한 장안서 입파도 구간 해역에 교통안전 특정해역을 설정하도록 제안하고, 입파도 정박지 및 장안서 정박지 확충을 제시함으로서, 이러한 교통시스템 개선을 통하여 평택항 도선구 주변 통항선박의 안전운항 증진방안을 기대할 수 있을 것으로 기대된다.

Monitoring of Moisture Content and Sediment Fineness as Predictors of Shoal Breaching in an Estuary

  • Lee, Seulki;Park, Sungjae;Lee, Chang-Wook
    • 한국측량학회지
    • /
    • 제36권1호
    • /
    • pp.25-32
    • /
    • 2018
  • Namdae-cheon in Gangwon-do Province, Korea, is a valuable well-preserved lagoon. The estuary of Namdae-cheon Stream is closed because of the surrounding natural sand shoal. Thus, during the dry season, river water cannot easily flow to the ocean and therefore stagnates. River water congestion causes environmental deterioration of estuaries, often by eutrophication. In this study, we examined wall disintegration in the estuary area and used it to determine appropriate measures for the conservation of estuary water quality in the future. A total of 24 sites were selected, with 13 sites on the west side and 11 sites on the east side of the estuary study area. Samples were collected and analyzed for particle size and moisture content both vertically and horizontally. Sedimentary deposition rate was measured, and subsidence analysis was performed. Particle size, water content, sedimentary deposition, and subsidence analyses indicated that flow shifted to the west during the study period. In conjunction with other variables that may affect changes in flow, these parameters can be used in future research to predict shoal breaches and associated changes in water flow direction.

수액질환(水液疾患)의 병기(病機) 및 치료원칙(治療原則)에 대한 비교고찰 - "동의보감(東醫寶鑑)"의 편제(編制)를 중심으로 - (The comparative study on the metabolism of water-diseases and its' fundamental rule of treatment - Based on the formation of Dongeubogam -)

  • 백상룡
    • 한국한의학연구원논문집
    • /
    • 제9권1호
    • /
    • pp.65-79
    • /
    • 2003
  • Many of the diseases that occur in a life being are either closely related to water, or they occur by loss or deterioration of water metabolism. There are six parts of study on this subject in ${\ulcorner}$Dongeubogam${\lrcorner}$. The parts are, the part of Jinaek the part of Dameum the part of Sobyeon the part of Bujong the part of Changman and the part of Seub. In these parts, it mentions loss of perspiration, abnormal urination, edema, abdominal dropsy, formation of abnormal body fluid and intrusion of dampness into the body and etc as the abnormal water metabolism. Loss of perspiration and urination is a process of eliminating the dampness in the body. Perspiration would be the abnormality of yanghwa[陽化]. Urination would be the loss of eumhwa[陰化]. Eum[飮] is the fluid accumulated in the body that failed to go through the process of Cihwa[氣化]. Dam[痰] is formed when the body fluid is heated by the smoking-fire. Meanwhile, the dampness occurs when the water penetrates into the bones, muscles and joints. Edema and abdominal dropsy are both outcomes of accumulated body fluid. Edema is the liquified body fluid congested on the surface or the peripheral ends of the body. Abdominal dropsy is congestion of fluid, that lost the characteristic of blood due to blood deterioration, in the abdominal part.

  • PDF

미나리가 마우스의 카드뮴 중독에 미치는 병리조직학적 관찰 (Histopathological Studies on Effect of Dropwort on Cadmium Poisoning in Mice)

  • 장종식
    • 한국임상수의학회지
    • /
    • 제16권1호
    • /
    • pp.13-18
    • /
    • 1999
  • This study was undertaken to find out the effect of dropwort on histopathological changes of cadmium toxicity in mice. Thirty two mice of BALB/c strain were divided into a control group (A) and three experimental groups (B, C, D). Each group was consisted of four males and four females : group A received tap water and basal diet, group B received tap water and diet supplemented with 100 mg/kg of cadmium, group C received dropwort juice and diet supplemented with 100 mg/kg of cadmium, group D received dropwort juice and basal diet. All mice were dissected on the 35th day. Pathological changes in liver, kidney, spleen, heart, lung, stomach and muscle were observed. Group D showed no significant change as the control group. But group B showed many cytoplasmic vacuoles and necrosis of hepatocytes, glomerular swelling, and degeneration and necrosis of convoluted tubules in kidney, marked congestion and hemorrhage, and a large number of variably sized alveolar macrophages appearance in lung and swelling in some part of muscle fiber. On the other hand, group C showed a little convalescent changes and maintained their normal architectures in liver, kidney, lung and muscle.

  • PDF