폐비닐여재를 적용한 부착성장식 공법의 유기물 및 영양염 제거 특성

서종환,김진우,안철우,이철승,박진식,김수생 동아대학교 환경문제연구소 2003 硏究報告 Vol.25 No.2

This study was carried out to demonstrate the removal characteristics of organic materials & nutrients in attached growth process applied Synthetic Wasted Polyethylene Media which is reused from wasted vinyl in rural. The results are as follows: 1. Removal efficiencies were indicated COD_(cr), 91.4, 92.4, 93.9%, T-N 56.9, 61.4, 65.1% and all T-P 45% or more with HRT 10, 12, 14 respectively. 2. It is indicated BOD volume load 0.18~0.40kg/ ㎥ ·d, COD volume load 0.28~0.53kg/ ㎥ ·d and NH₄-N volume load 0.12kg/ ㎥ ·d respectively. In conclusion, It is showed activated sludge process is replaced with this process applied Synthetic Wasted Polyethylene Media and this process is considered the methods that solve wasted vinyl troubling in a rural.

Graves병 환아 혈청내 갑상선 자가항체의 임상적 의의

서종진 충남대학교 의과대학 지역사회의학연구소 1990 충남의대잡지 Vol.17 No.2

The prevalence of antithyroid autoantibodies and the relationship between the presence of autoantibodies and response to antithyroid medication were studied in 20 children with Graves' disease who were seen at the Department of Pediatrics, Chungnam National University Hospital from March 1985 to February 1990. The circulating AMA, ATA and TRAb were detected in 80%, 45% and 90% respectively. The TRAb was measured by TBII, and the mean value was 41.1±20.9%. The results of thyroid function test at 3 and 6 months after antithyroid medication showed higher euthyroid conversion rate among the patient group without AMA or ATA than the patient group with AMA and ATA. The mean TSH level after 6 months' antithyroid medication was suppressed significantly more in the patient group with AMA and ATA than in the patient group without AMA or ATA. These result showed that the prevalence of autoantibodies in childhood Graves' disease was almost similar to that of adults, and the treatment response of initial 6 months' period was better in patients without AMA or ATA. The relapse rate could not be elucidated due to short-term follow-up period.

Substance P의 기니피그 위 유문동 윤상근에 대한 수축 및 전기적 효과

서종옥,이승곤,김종승,전제열,여철호,윤평진 조선의대 1995 The Medical Journal of Chosun University Vol.20 No.2

소아 갑상선종에 대한 임상적 고찰

徐宗振 충남대학교 의과대학 지역사회의학연구소 1987 충남의대잡지 Vol.14 No.2

56 Children with goiter who visited Chungnam National Univ. Hospital from Jun. 1986 to Nov. 1987 were studied and the observed clinical data are as follows: 1) Children of more than 10 year of age were 46 cases(82.1%), and the ratio of male and female was 1 : 6. 2) Simple goiter and chronic lymphocytic thyroiditis(CLT) were about 75% of the studied cases and they were the two most important underlying diseases of goiter in childhood. 3) In classification of goiters according to function, the euthyroid goiter was 80.3% of all the studied cases. The hyperthyroid and hypothyroid goiter were 8% and 5.4% each. Among 20 cases of CLT, 14 cases (70.0%) were euthyroid CLT. The hyperthyroid and hypothyroid CLT were 3 cases(15.0%) each, but the abnormalities in thyroid function were not so severe. 4) Goiter, increased sweating, palpitation, easy fatigability and exophthalmos were the common initial symptoms and signs hyperthyroid goiters in descending order. 5) Antithyroid medication with or without thyroxine was given to hyperthyroid patients, and replacement therapy with thyroxine was done for all the hypothyroid goiters. 24.4% of euthyroid goiters were regularly followed up without medication, and the others were given thyroxine.

소아 급성 임파성 백혈병의 대사장애에 관한 연구

徐宗振 충남대학교 의과대학 지역사회의학연구소 1988 충남의대잡지 Vol.15 No.1

The metabolic derangements and the effectiveness of the supportive treatment to prevent them were analyzed in 18 patients with acute lymphocytic leukemia, and the results are as follows; 1) The frequently observed metabolic derangements were hyperphosphatemia (Pre-Tx : 43.8%, Post-Tx : 30.8%), elevation of LDH level, hyperuricemia, hypocalcemia and hyperkalemia in the descending order. 2) With the supportive treatment to prevent hyperuricemia, there was no full-blown acute tumor lysis syndrome, and even the metabolic derangements were not so severe except in some cases with hyperleukocytosis. 3) The frequency and severity of metabolic derangements were higher in the patients with hyperleukocytosis compared to those without hyperleukocytosis. 4) No case with significant azotemia was observed in the present study. With the above results we concluded that the supportive treatments were quite effective to prevent metabolic derangements in acute lymphocytic leukemia especially when it is hyperleukocytic, and early detection of leukemia with early initiation of preventive measures for metabolic derangements listed in this study is most important for the prevention of tumor lysis syndrome.

소아 Lymphoreticular Malignancy의 말초혈액 T-임파구 아형 분포와 질병 경과에 대한 연구

서종진,정기영 충남대학교 의과대학 지역사회의학연구소 1989 충남의대잡지 Vol.16 No.2

The authours studied on the relationship between peripheral blood T-lymphocyte subpopulations, outcome of lymphoreticular malignancies in childhood and frequency of infection in 12 patients with lyphoreticular malignancies. 1. Total numbers of lymphocyte of the patient group with poor outcome (Group 2) were decreased more than the patient group with good outcome (Group 1) significantly (p<0.005). 2. Percent OKT4+T-lymphocyte in cancer patients was significantly decreased compared to normal control subjects(p<0.05), but there was no significant difference between patient groups. 3. Total number of OKT4+T-lymphocyte in Group 2 were decreased significantly more than Group 1(p<0.005). 4. Percent OKT4+T-lymphocyte in cancer patients was increased compared to normal control(p<0.005), but there was no significant difference between patient groups. 5. Total numbers of OKT8+T-lymphocyte in Group 1 were increased significantly more than Group 2(P<0.005). 6. The ratio of OKT4_/OKT8+in cancer patients were decreased significantly (p<0.005), but there was no signifiant difference between patient groups. 7. We coould find no significant relationship between the frequency of infections and the status of T-lymphocyte subpopulations at diagnosis. Theses results suggest that the children with lymphoreticular malignancies have depressed cellular immune functions and the outcome of the disease can be significantly influenced by the status of T-lymphocyte subpopulations before treatment. Conclusively, the assessment of cellular immunity with T-lymphocyte subpopulations can give prognostic implications before treatment of lymphoreticular malignancies in childhood.

수액 세트의 Drip Chamber를 이용한 상부소화관의 이물 제거 1예

서종훈,양미진,이진성,이상호,김정원 고신대학교 의과대학 2010 고신대학교 의과대학 학술지 Vol.25 No.2

In the upper gastrointestinal tract, in particular, there are parts consisting of esophageal sphincter muscles to carry out physiologic functions, which causes impairments when removed, as well as such complications as mucosal injuries, bleeding and even perforations in the case of foreign bodies with large size and/or sharp angles. Therefore, it is essential to use an appropriate type of supplementary instrument for a safe procedure. Frequently utilized supplementary instruments are overtube, protector hood, latex glove and transparent cap. We report a case in which authors were successful in removing a watch bend consisting of metal ring from gastric body while using a modification of a widely available drip chamber of fluid set attached to vertical end of endoscopic device.

새마을 主産團地의 營農實態 比較硏究

徐大振,李宗玉,鄭鉉承,崔元凱,姜鎬允 진주산업대학교 1981 論文集 Vol.19 No.-

The purpose of this study were to find the actual condition of the co-operative group farming in Korea, and to improve the low income Saemaul villages by the adoption of good points in co-operative Group farming. There were so many co-operative farmings in Korea, but all of them were not so successful, Eight co-operative group farmings were chosen to investigate for the above purposes. (Table 1). The tendency of agricultural income was not always true. First of all, Co-op Poultry farm did not follow the order of agricultural income. Because there was an excellent leader who had eliminated the circulation expenses in process of the purchase of feeds and the sale of eggs in common, Second, Seachiodong flower were devived into two parts the cultural flower and the sale flower. The cultural flower meant mainly producing flowers and the sale flower mainly selling flowers to downtown shops in Seoul. The income per householder of the cultual flower was less than that of the sale flower. Consequently, sucessful Co-operative Group farmings had an able leader, and performed production and sale more reasonablly.

소수성 NaY Zeolite의 합성과 탈알루미나의 특성

서동남,하종필,구상모,이해진,김익진 호서대학교 반도체제조장비국산화연구센터 2000 학술대회 자료집 Vol.2000 No.1

NaY형 Zeolite는 현재 그들의 촉매적 특성과 흡착성 그리고 이온 교환성들을 이용하여 산업에 중요하게 사용되어지고 있다. 본 실험은 고온 스팀을 이용한 방법과 산처리에 의한 방법으로 탈알루미나의 효과를 확인하는 실험을 하였다. 먼저 SiO_2/Al_2O_3 몰비가 4∼6인 합성 NaY zeolite를 분위기 소성로에 넣고 증기발생 장치를 이용하여 500℃에서 고온 스팀을 분위기 소성로에서 일정하게 주입하였다. 에에 따른 결과는 탈알루미나 처리 후의 XRF와 BET의 결과로 탈알루미나 처리에 따라서 SiO_2/Al_2O_3의 몰비가 20.6에서 21까지 증가한 것을 알 수 있으며 또한 BET의 결과에서 탈알루미나 처리에 의해서 비표면적이 증가한 것을 확인할 수 있으며 특히 meso pore area의 증가는 탈알루미나에 의해서 zeolite의 골격구조가 일부 파괴되었음을 알 수 있다.

특허권 강화는 기술혁신을 촉진하는가? : 한국의 특허법 개혁을 중심으로 Evidence From the Korean Patent Law Reforms

徐煥周,鄭東進,宋鍾國 한국국제경제학회 2004 국제경제연구 Vol.10 No.2

1970년대 말 이후 취해진 미국의 일련의 특허권 개혁과 1994년에 체결된 TRIPS협약을 계기로 특허권 강화와 기술혁신간의 상관관계에 대한 수많은 실증연구가 1990년대 들어 행하여지고 있다. 그러나 최근의 실증연구결과들은 특허권강화가 기술혁신을 촉진하는 유효한 수단인가에 대해서 명확한 결론을 내리지 못하고 있어, '특허의 역설(Patent paradox)'이라 불리고 있다. 본 연구는 우리나라의 특허 및 연구개발 지출 자료를 활용하여 특허권 강화(특허법개혁)가 기술혁신활동에 유효한 인센티브로 작용하는 지를 살펴보았다. 분석결과 1980년대 말의 특허법 7차 개정과 1990년대 중반의 11차 개정이 연구개발 지출과 특허출원건수로 측정한 기술혁신활동에 긍정적으로 작용하였음을 발견하였다. 그러나 우리의 추정방법이 제도개혁의 직접적인 영향만을 추정하는 것이 아니라 여타의 거시적 충격까지 포함할 가능성이 있기 때문에 조심스러운 해석을 요한다. By influencing the incentives to innovate, the strengthening of patents may affect economic growth in important way. An important question for many countries is whether patent law reforms induce more innovation. This paper examines the role of patents in innovation, utilizing Korean data on patent applications, expenditure of R&D, sales and concentration ratio. The evidence suggests that the strengthening of patents was a significant determinant of innovation in Korea. However, in our estimations, we do not completely eliminate the effects of other macro shocks. Therefore, we interpretate our results as representing an "upper bound" of Korean firms' responses to patent law reforms.