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하수종말처리시설 민간투자사업을 위한 계획 인구 및계획 하수량 추정
손영규,이소영,김이형,김지형 한국방재학회 2008 한국방재학회논문집 Vol.8 No.1
A novel method was suggested for the estimation of design population and design wastewater flow rate in fishing and agrarian village. Even though the population was decreasing continuously in this area, the design population was considered as constant with the passage of the time in conventional methods. And although the portion of groundwater uses was pretty high, the design wastewater flow rate was determined by the supply amount of tap water. Consequently, the design population and the design wastewater flow rate were overestimated. To prevent these overestimates, the design population was predicted to decrease gradually using the population trends from Korea National Statistical Office, and the design wastewater flow rate was determined using the way that the supply amount of tap water was applied in developed areas and the supply amount of groundwater was used in undeveloped areas. 농어촌지역의 하수종말처리시설 민간투자사업에 대한 계획인구 및 계획하수량 산정 방법을 검토하였다. 기존의 추정 방법에서는 인구 감소 추세임에도 불구하고, 인구가 정체될 것으로 가정하여 계획인구를 추정하고 있으며, 수도보급률이 매우 낮은 지역에서의 계획하수량을 정수장 급수보급량을 이용하여 산정하고 있다. 결과적으로 계획 인구 및 계획하수량의 과다 산정은 필요 이상의 하수종말처리시설이 만들어지게 되는 결과를 가져오게 된다. 그러므로 본 연구에서는 계획 인구는 통계청의 장래인구 추계결과를 따르는 것으로 하고, 수도가 보급된 지역에서는 급수사용량을, 수도가 보급되지 않은 지역에서는 지하수 사용량을 이용하여 계획하수량을 산정하는 방안을 제시하였다.
^203Hg chlormerodrin 排泄에 미치는 利尿劑의 影響
孫永珪 慶北大學校 醫科大學 1970 慶北醫大誌 Vol.11 No.1
In this experiment the animals used were adult mongral female dogs with body weight of 10―14 kgs. The dog was first anesthetized with pentobarbital and hydrated with 0.9% Nacl. Then, after an injection of 203 Hg chlormerodrn first and then additional injection of mercurophylline, ethacrinic acid and respectively, the following factors were studied and compared: The quanitity of ^203Hg chlormerodrin in the excreted urine RPF GFR, urinary volume, blood content of ^203Hg chlormerodrin and the quantity of ^203Hg chlormerodrin in the kidney tissue. The total of 35 experimental dogs were divided into two groups, A and B. Group A: In this group the dogs were injected through femoral vein with ^203Hg chlormerodrin and then an additional injection of mercurophyilline, ethacrgnic acid and furosemide respectively, and then the urinary volume, sodium and potassium content in the excreted urine, the radioact activity of ^203Hg chlormerodrin in blood, in the excreted quantity of ^203Hg chlomerodrin the urine and the accumulated quantity of the same in the kidney tissue were studied and compared. Group B: In this group the dogs were injected through femoral vein with ^203Hg chlormerodrin as above, but the ethacrinic acid and furosemide were injected through one of the renal artery respectively, and then the excreted volume of the urine, the radioactivity of ^203Hg inblood the quantity of ^203Hg chlormerodrin in the urine, RPF, GFR and the accumulated quantity of ^203Hg clormerodrin in the kidney tissue of each kidney were studied and compared respectively. From the above study the following results were observed. Group A: 1) The urinary volume was not increased in the group of dogs with injection of ^203Hg chlrmerodrin only and ^203Hg chlormerodrin plus mercurophilline, but markedly increased in the dogs with ^203Hg chlormerodrin plus ethaicrnic acid and euremide and particularly more marked in the group with furosemide. 5) The excreted quantity of ^203Hg chlormerin in the urine were increased in the dogs with mercurophilline and those with chloromerodrin plus ethacrinic acid, but decreased in the dogs with chlormeorodrin only and chlomerodrin plus furosemide. 6) The accumulated quantity of ^203Hg chlormerodrin in the kidney tissue was least in the group with mercurophilline and about the same among the others. Group B. The injection site was selected at the left renal artery. 1) The urinary volume was markedly increased in the left kidney of the dogs with ethacrinic acid and furosemaide injection group and particularly more marked in the furosemide injection group. 2) There were no significant differences of R.P.F and G.F.R in each kidney. 3) The excreted quantity of ^203Hg was very markedly increased in the group with ethracinic acid injection. 4) The accumulated quantity of ^203Hg in the kidney tissue showed no significant differences among the group. From this study the ethacrynic acid seems to increase very markedly the excretion of the ^203Hg chlormerodrin in the urine. but the excretion of the ^203Hg chlormerodrion does not seem to affect the urinary volume, R.P.F. and G.F.R very much. It seems that the ethacrynic acid and mercurophylline compete each other for the combination with protein bound sulfhydryl of the cell in vivo.