活性炭을 Media로한 生物學的 流動層의 合成廢水 處理에 關한 硏究

金煥起,朴相肅,최두병 全北大學校 附設 都市및環境硏究所 1994 都市 및 環境硏究 Vol.9 No.1

This paper was performed for characteristics of BOD removal, DO uptake and effluent water of SS by the BFB filled with activated carbon. 1) According to the experimental results, hydraulic retention time was 42 minutes, 3.42㎏-BOD/㎥·day of BOD volume loading rate, almost 85percent of organic removal characteristic, almost 40 percent upper of DO uptake rate, below 15㎎/ℓ of SS concentration rate of effluent water. 2) If media concentration was more than 257 ㎏/㎥, 30 percent of reactor, normal treatment rate was not anticipated. 3) As recirculation velocity was 0.57 ㎝/sec, the best optimum organic removal rate was 88.6 percent. 4) In the view of DO uptake, media concentration was 171㎏/㎥ and uptake rate was 56.4 percent in recirculation velocity 0.42 ㎝/sec. 5) The effluent SS concentration was below 15 ㎎/ℓ. 6) As characteristic of organic removal and DO uptake, the optimum treatment rates were recirculation velocity of 0.42 ∼ 0.66 ㎝/sec and media concentration of 222 ∼ 257 ㎏/㎥.

흰쥐에 있어서 Sparganum의 移行과 發育에 관한 硏究

金昌煥,徐淑才,崔朱卿 慶尙大學校 1985 論文集 Vol.24 No.1

This study was carried out to investigate the migration and development of the Sparganum in rats and the changes of haematological values in the hosts infected with Sparganum. The results obtained were summarized as follows: 1. The recovery rate of the Sparganum in the infected rats was 57 per cent on the autopical findings of the infected individual rats during observations from 2 hours to 32 days after infection with Sparganum. 2. The larval Sparganum was found in the digestive tract within two hours after administration with oral route and then, the worms began to penetrate and migrate via the abdominal cavity within 4 to 6 hours and the worms were found in the muscular tissues 2 days onwards after infections. 3. The infected Sparganum began to deveolp the size of the body from 4 day after infection and then, the size of the Sparganum was measured by 52.9mm long and 3.2mm broad on 32 days after infection . 4. In the haematological observation of the host the red blood cell values changed little, while the white blood cells were increased significantly during 2 days after infection and thereafter they were recovered to the normal values.

Rhabditis sp.의 생장에 미치는 온도의 영향에 관한 연구

金昌煥,徐淑才 慶尙大學校 1986 論文集 Vol.25 No.2

Rhabditis sp.는 토양선충의 한 종류로 토양내의 유기물을 섭취하는 자유선충인데 광범위한 온도조건에서도 서식하고 있는 것으로 알려져 환경요소 중 온도가 Rhabditis sp.의 개체증식과 생장에 미치는 영향을 검토해 보고자 여러 온도 조건하에서 배양하여 개체의 생장과 증식수 및 대사작용에 관여하는 Esterase와 Acid phosphatase의 pattern 변화를 Electrophoresis를 통하여 조사한 바 다음과 같은 결과를 얻었다. 1. 20℃±4의 온도범위에서 배양된 Rhabditis sp.가 다른 12℃, 32℃ 온도하에서 배양된 Rhabditis sp.와 비교하여 증식수와 체형의 크기에 차이가 있었다. 2. Nanspecific esterase는 총 13개의 Isoenzyme band가 확인되었으며, 각 온도에 따라 12℃는 7개, 16℃·20℃·24℃는 각 6개, 28℃는 5개의 major band를 확인할 수 있었다. band 5번(Rf 0.58)은 전 온도범위에서 확인되었고 band 12번Rf 0.89)는 24℃온도에서만 확인되어 각 band에 따른 활성온도 범위가 각각 달랐다. 3. Acid phosphatase의 Isoenzyme pattern은 총 4개의 Isoenzyme major band 중 band 1. 2. 4. 번은 12℃에서만 major band이었고(Rf 0.14, 0.29, 0.33), band 3번(Rf 0.31)은 16℃ 이상의 온도에서 major band이었다. The present studies was carried out to investigate the influence of temperature on the rate of growth and on the multiplication of Rhabditis sp.. Rhabditis sp. was cultured at various temperature levels (12, 20, 24, and 28℃) and analysed by electrophoresis to investigated the isozyme pattern of nonspecific esterase and acid phosphatase. The results obtained were as follows. 1. Rhabditis sp. cultured at 20℃±4 showed differences in the rate of multiplication and body lengths, as compared with that at 12° or 32℃. 2. A total of 13 isoenzyme bands of nonspecific esterase was idendified and the numbers of major bands at esch temperature(12, 16, 20, 14 and 28℃) were 7, 6, 6, 6, and 5, respectively. Band 5 appeared at all temperatures tested, whereas band 12 appeared only at 24℃. 3. The patterns of acid phosphatase isoeozymes showed 4 major bands.. Out of 4 major bands band 1, 2 and 4 represented as major bands only at 12℃, whereas band 3 represented as major band at temperatures above 16℃. The results showed that the temperatures had effect on the activity of isoenzyme bands.

어류 성장에 있어서 식물 및 동물플랑크톤의 먹이기여도

김백호,김미연,최환석,김정중,최민규,박승택,정연태,高村典子 원광대학교 환경과학연구소 2000 環境科學硏究誌 Vol.9 No.1

製紙廢水 슬러지의 濃縮 및 脫水特性에 關한 硏究

金煥起,朴相肅,李壯煥 全北大學校 附設 都市및環境硏究所 1992 都市 및 環境硏究 Vol.7 No.-

Paper and pulp industry are improving by development of paper and publication culture, also treatment and generated sludge in wastewater treatment have operated significant factor of development in paper industry. Therefore, this paper had study on the thickening and dewatering of sludge for the methods of the rational treatment and disposal of sludge in paper mill industry. 1. The primery sludge of wastewater treatment in paper mill are rapid to zone settling velocity, because sludge concentration are concentrated more primery sludge than seconday sludge. 2. The injected polymer to sludge of wastewater treatment in paper mill is 2.6mg. This is very similar to that quantity of injected polymer in treatment plant of paper mill wastewater. 3. Specific resistance to sludge of wastewater treatment in paper mill is 0.33×10 exp (7)sec^2/g, dewatering sludge in paper mill wastewater are good, because specific resistance of sludge in wastewater treatment plant is smaller than other sludge.

펜턴試藥을 이용한 廢水處理 슬러지의 脫水特性에 關한 硏究

金煥起,朴相肅,劉永壽 全北大學校 1997 論文集 Vol.37 No.-

This study was carried out to improve the dewatering characteristics of wastewater treatment sludge using Fenton's Reagent. The Fenton's Reagent consisting of FeSO_4 and H_2O_2 has powerful oxidizing ability and reactivity. According to the experimental results, primary dosage of FeSO_4 was more effective than secondary in the wastewater treatment sludge and the reagent was almost completed at about 20 minutes contact time with the wastewater sludge. The dosage ratio of FeSO_4:H_2O_2=1mole : 1.6mole was the highest dewatering efficiency. The specific resistance of Fenton's Reagent, 7.335×l0 exp (10)m/㎏, was much lower than these studied as 2.88×10 exp(14)m/㎏ of activated sludge and 1.05×10 exp(12)m/㎏ of conditioned digested sludge. Therefore, the Fenton's Reagent oxidized organics in and then improved dewatering of the wastewater treatment sludge.

五成貯水池의 富營養化 豫測에 關한 硏究

金煥起,朴相肅,申殷燮 全北大學校 附設 都市및環境硏究所 1994 都市 및 環境硏究 Vol.9 No.1

This study was performed in order to estimate the eutrophic potentials in Oseung Reservoir, located on Jeong-eup in Chonbuk. The experiment was carried out to expect the eutrophication by nitrogen and phosphorus inleted collection-area after Dam construction. The obtained results are as follows; 1. According to water quality analysis, 3.6∼4.7㎎/ℓ of COD appeared to the much biological nondegradation organic even though BOD 0.4∼1.1㎎/ℓ. 2. The expected water quality of Oseong will attach BOD 0.8㎎/ℓ, COD 4.09㎎/ℓ, T-N 6.67㎎/ℓ and T-P 0.034㎎/ℓ. 3. The restrain function of the reservoir is T-P according to the criteria of eutrophication. 4. After Dam construction, KSTI 48.5 produced from T-P will be graded in the middle condition. Therefore, the good counter measure is expected to prepare.

여성들의 자기효능감과 건강증진행위에 관한 연구

정숙희,하안례,심선녀,이용환,김광혁 고신대학교보건과학연구소 2003 보건과학연구소보 Vol.13 No.-

The results were as follows : The higher the degree of self-efficacy feeling, one of the recognition factor was the more did they do health-promoting activities (γ=0.48, p=0.00). The conducting degree of health-promotion activities resulted in 3.79 points in the perfect score of 6point, which was a quiet high result. The subordinate areas under the health-promoting activity were adjustment of personal relationshiP (4.42), nutrition (3.93), stress control (3.87), self-realization (3.64), alcoholic drink/smoking (3.38), and responsibility for health. As for the differences of self-efficacy feeling according to subjects general characters, significant differences were found in the areas of age, occupation, whether or not they have taken healthrelated lectures, family and geriatric diseases of family members or relatives. The above study results tell that the self-efficacy feeling has a great effect on their putting the health-promoting activities into practice, in daily life.

개의 콜레스테롤 담석 증례

전혜영,박성환,한재익,이숙진,김근형,정동우,나기정 충북대학교 동물의학연구소 2006 Journal of Biomedical and Translational Research Vol.7 No.1

본문참조

서울시내 고등학교 위탁급식의 급식비와 투자비의 실태 및 위탁업체의 기대수준 비교 분석

양일선,배환미,김현아,신서영,조미나,박수연,차진아,이보숙 한국식생활문화학회 2002 한국식생활문화학회지 Vol.17 No.5

The purposes of this study were to a) find out the operational characteristics of the contract-managed highschool foodservice in Seoul, b) investigate the expected level of meal-price and facilities investment cost perceived by contract-managed highschool foodservice managers c) compare the present level and expected level of meal-price and facilities investment cost. From October 12 to November 13 in 2001, the questionnaires were mailed to 249 high schools which was managed by contract foodservice company with respondent rate 40.2%. Data were analyzed using SPSS Win(10.0) for descriptive analysis and one group paired t-test. The results of this study were as follows ; 1. The student enrollment of highschools run by contract-managed foodservice was 1,243 with 72.6% participation rate of school lunch program. The average meal-price was 2,138 won. The average annual period of school foodservice operation was 156.78 days per year. The average contracting period was about 3 years. 2. The average cost concerned in the facilities investment amounts 169,578,180 won at the initial investment and 25,204,092 won at the repairs and maintenance cost in the course of operation. 3. The present level of meal-price and facilities investment cost were respectively 2,136won/meal and 171,157,336.72 won. And expected level.of meal-price and amount of facilities investment cost were 2,418.75 won and 121,353,215.19 won. Comparing the present level with expected level of the meal-price and facilities investment cost, expected level of meal-price was significantly higher than the present level of meal-price(p<.001) and expected level of facilities investment cost was significantly lower than present level of facilities investment cost(p<.001).