동진강 수계 농업용수 수질평가

한수곤,최정식,문영훈,엄미정,김갑철 한국환경농학회 2000 한국환경농학회지 Vol.19 No.2

동진강 수계의 수질현황을 파악하기 1994∼1998년 까지 4∼9월에 월 1회에 걸쳐 5개년간 조사한 결과를 요약하면 다음과 같다. 월별로는 빗물에 의한 희석효과로 7, 8월에 수질이 가장 양호하였으며, 4월이 다소 불량하였으나 수도생육 피해 한계농도에는 미치지 못하는 수준이었다. 지점별 수질현황은 생활하수 유입지인 정읍천과 지천의 폭이 좁은 원평천의 무기성분 함량이 높았으며 동진천 상류지역에서 가장 양호하였다. 연도별 현황은 '94년 이후 '95년까지는 수질이 악화되는 경향을 보였으나 '95년 이후로는 각 성분 함량이 낮았지는 등 점점 양호해지고 있으며 COD함량으로 볼 때 특히, 정읍천의 수질이 개선되고 있음을 알 수 있었다. 양이온과 음이온의 총당량온 4월에 가장 높았고 7, 8월에 가장 낮았으며 양이온/음이온의 당량비는 5월에 높았고 7월이 가장 낮았으며 지점에 따라서는 총당량은 정읍천, 원평천, 동진천 하류, 중류, 상류의 순위였으며 양이온/음이온 총당량 비율은 원평천이 상대적으로 작은 수치를 보였지만 지역간 큰 차이는 보이지 않았다. 수질 중 각 성분 상호간의 상관관계를 보면, 대개의 성분 상호간에 유의성이 높게 나타났으나, NO₄^--N는 대개의 성분과 유의성이 없었고, PO₄^(3-)-P도 COD, NH₄^+-N, NO₃^--N, SO₄^(2-)과는 유의성을 보이지 않았다. This study was conducted to monitor the irrigation water qualities along Dong-Jin river watershed. The water quality was surveyed at 6 sites from April to september during 1994∼1998. And the results were as follows : In July and August, water quality was better than that of any other months due to dilution with rainwater. Whereas, it became worse in April but it involved lower contents than limitted contents affected to the crop damage. Content of inorganic components was higher at Jeong-up and Won-pyeong stream. The reason for it that Jeong-up stream was deteriorated with sewage water from Jeong-up city, and Won-pyeong stream has narrow width. Water quality in upstream of Dong-Jin river, was evaluated best conditions in all sampling sites. For investigated period, water quality got worse from 1994 to 1995 but it was getting better to 1998 after 1995, especially at Jeong-up stream. The total equivalent of cation and anion was the highest at April through all months and at Jeong-up stream in sampling sites. Equivalent ratio of cation to anions(∑C/∑A) was higher at May than any other months and lower at Won-pyeong streams than any other sites. The value of most inorganic components was highly correlated with those of other components. But the value of NO₃^--N was not correlated with that of most components, and PO₄^(3-)-P was not correlated with COD, NH₄^+-N, NO₃^--N, SO₄^(2-_.

Long-term outcomes of single-port laparoscopic myomectomy using a modified suture technique

( Mina Kang ),( Jihye Kim ),( Tae-joong Kim ),( Jeong-won Lee ),( Byoung-gie Kim ),( Duk-soo Bae ),( Chel Hun Choi ) 대한산부인과학회 2020 Obstetrics & Gynecology Science Vol.63 No.2

Objective To evaluate the long-term outcomes, including the pregnancy outcome and recurrence rate after single-port laparoscopic myomectomy (LM) using a modified suture technique with a Hem-o-lok clip (Choi’s LM) and conventional 4-port LM. Methods A retrospective study of patients who underwent Choi’s LM (n=55) and 4-port LM (n=102) in a single institutional hospital was conducted. Patients with <3 symptomatic myomas sized <10 cm each and operated on by a single surgeon were included. Recurrence was confirmed when a myoma measuring ≥3 cm was detected. Results The patients in both groups had similar demographic characteristics. Single (76.4% vs. 62.7%) and intramural (52.7% vs. 56.9%) tumors were commonly detected in both groups in the mean diameter (6.8±1.5 cm vs. 7.0±1.6 cm; P=0.40). In Choi’s LM, 16 patients (29.1%) needed an additional port; those who were nulliparous and/or had a large leiomyoma more frequently required an additional port (P=0.023 and 0.04, respectively). During a median follow-up period of 69 months, 17 patients (7.1% vs. 14.6%) had recurrence. The size of dominant myomas at recurrence was significantly smaller in patients who underwent Choi’s LM (3.4±0.7 cm vs. 5.7±2.4 cm; P=0.004). All 13 patients in both groups who successfully conceived had a full-term delivery. No major complications occurred during pregnancy. Conclusion Although an additional port was frequently used, the long-term outcomes of patients who experienced recurrence and pregnancy after Choi’s LM were acceptable. Considering its usability, Choi’s LM is feasible for the treatment of uterine leiomyoma.

최근 10년간 원광의대병원에서 시행한 소아 심장혈관 수술의 임상적 고찰

윤향석,정수미,최두영,오광수,오연균,김종덕,양현웅,이삼윤,김형곤,최종범,최순호,노병석 圓光大學校 醫科學硏究所 1995 圓光醫科學 Vol.11 No.2

We reviewed 10 years experiences of the clinical aspects and early postoperative results in 544 pediatric patients(age less than 16 years old). Among them. 529 cases had the congenital heart diseases, and 15 had the acquired diseases. Open heart surgery was performed in 413 patients. 115 cases were treated with non-open heart surgery. 16 with interventional catheterization. Annual increase of the cardiac patients was not significant in recent 10 years, except slight increase in 1994. The mean age of the study patients had been evidently changed to younger year by year. Total mortality rate of the open heart surgery was 6.4%. The cyanotic congenital heart diseases were high in early postoperative mortality by 25.7%, whereas 4% in acyanotic group. The age group less than one month was most highest in surgical mortality(66.7%). There were no deaths in patients with patent ductus arteriosus(103 cases), atrial septal defect(83 cases) or pulmonary stenosis(17 cases). Among 220 patients with ventricular septal defects(VSD). 10(4.5%) were died early postoperatively. In cyanotic group, the patients with pulmonary atresia with ventricular septal defects(PAVSD), transposition of the great arteries(TGA), interrupted aortic arch(IAA), complex cardiac anomalies with isomerism seemed to be most susceptible to an early death.

개심술(開心術)의 임상적 고찰 : 치험 200예 200 Cases

최형호,서홍주,임영혁,김정중,배대양,이석기,임진수 조선대학교 부설 의학연구소 2002 The Medical Journal of Chosun University Vol.27 No.2

Background and Objectives: Two hundred cases of the open heart surgery due to congenital and acquired heart disease were done using the cardiopulmonary bypass in the Department of Thoracic and Cardiovascular surgery, Chosun University Hospital from November, 1980 to June, 2001. Material and Methods: The number of congenital heart disease was 132 cases. 68 cases were acquired heart disease. 'The age of the congenital heart disease was from 22 days to 45 years. In the acquired heart disease, the age was from 14 to 72 years. Result: Congenital heart disease consisted of 113 congenital acyanotic heart disease, 19 congenital cyanotic heart disease. Corrective operation was done for congenital heart disease with 4. 5 % operative mortality. Of 68 cases acquired heart disease, 44 patients were valvular heart disease, 3 cardiac tumors, 9 ischemic heart diseases, 12 aortic dissections and etc. The operative mortality was 13%. Conclusion: The postoperative complications were appeared in 68 cases and the complications were wound infection, occipital alopecia, low cardiac output syndrome, arrhythmia, septicemia etc. The mortality after open heart surgery was 15 cases and the causes of death were low cardiac output syndrome, septicemia, respiratory failure and left ventricle rupture.

하악 무치악 인공치아매식술시 하치조신경 전위술

최의환,하정완,김수관,정태영,김수흥 대한악안면성형재건외과학회 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.3

Modified surgical technique for transposition of the inferior alveolar nerve followed by immediate placement of endosseous implants in mandibles with moderate to severe atrophy are presented. Five transpositions of the inferior alveolar nerve together with the installation of 10 implants were performed in four patients. The mean postoperative follow-up time was 17 months, with a range of 8 to 20 months. All implants with functioning pontics remained stable, with no mobility or symptoms of pain and infection during the follow-up period. Neurosensory evaluation was performed using the two-point discrimination test. Two patients had objective neurosensory dysfunction at postoperative, but all the nerve function were reported as normal by the patients 4 months postoperatively.

식도를 포함한 전위장관을 침범한 전이성 악성 흑색종 1예

최정영,김준기,신성하,고영춘,조상욱,서강석,강명원,임연근,여향순,김경수 全南大醫大 2001 전남의대학술지 Vol.37 No.1

대학생집단의 뇌기능 특성화 경향에 대한 연구

최기수,윤규태,안의태,양남길,고정식,박경호 순천향의학연구소 1995 Journal of Soonchunhyang Medical Science Vol.1 No.2

체육학과 학생 163명과 국가대표선수 211명을 포함한 체육 전공자들과 의과대학생 282명, 문과대학생 101명, 신학전공학생 96명 그리고 간호학과 전공학생 100명, 계 953명을 대상으로 남녀 대학생들의 대뇌반구의 특성화, 편재화 경향을 시나가와 ( 品川)질문지 법을 이용하여 분석한 결과 다음과 같은 결과를 얻었다. 1. 체육과 남학생은 우뇌형 45.6%, 좌우뇌형 47.4%, 좌뇌형 7%로 나타났으며, 여학생의 경우 우뇌형 41.6%, 좌우뇌형 44.3%, 좌뇌형 14.2%로 나타났다. 2. 대표선수의 경우 우뇌형과 좌우뇌형에서 일반 체육학과 학생과 유사한 분포를 보였으나, 좌뇌형이 남자 12.9% 여자 12.6%로 남녀 고른 분포를 나타냈다. 3. 의과대학생의 경우 남학생은 우뇌형 63.5% 좌우뇌형 24.9% , 좌뇌형 11.6%인 반면, 여학생은 우뇌형 50%, 좌우뇌형 22.9%, 좌뇌형 27.1%로 나타났다.. 4. 문학은 전공하는 남녀학생과 신학을 전공하는 학생은 우뇌형, 좌우뇌형, 좌뇌형의 순으로 유사하게 나타났다. 5. 간호학전공 학생의 분포는 우뇌형42.0% 좌우뇌형 38.0% 좌뇌형 20%였다. Many Studies have demonstrated that the two hemispheres are functionally specialized in the majority of individuals, so that the left hemisphere regulates verbal-analytic cognitive abilities while the right hemisphere predominates in spatial-synthesis abilities. This research program have proceeded about the tendency of hemisphere specialization in sportsmen and variable subject classes in university. Sinagawa's questionnaire method was used as the instrument for this study . The results obtained were as follows: 1. In the physical education class(163subjects) 45.6%(male) and 41.6%(female) of the subjects were regarded as the left hemisphere dominant type, 47.4%(male) and 44.3%(female) of them were bilateral and 7%(male) and 14.2%(female) of them were regarded as left hemisphere dominant type. 2. In the representatives (mational players) group, very similar frequencies were shown except in the left hemisphere dominant type, whose percentile distributions appear as 12.9% in males and 12.6% in females. 3. Extremely higher frequency was shown in right hemisphere dominant type in the male students of medical science class : 63.5% of them were right, 24.9% were bilateral and 11.6% were left hemisphere dominant type. 4. The frequencies of the literature class also were shown very similar patterns with those of other female classes.

대기 중 휘발성 유기화합물의 Advanced Technology에 대한 실험비교

최금찬,안병주,김석택,김찬훈,정창훈,서정민,유수영 동아대학교 환경문제연구소 2000 硏究報告 Vol.23 No.1

Nowaday, Advanced technology has been applied to organic destruction technologies that are alternatives to incineration. Plasma, photolysis, and Photocatalytic oxidation processes are an emerging advanced technologies for the abatement of volatile organic compounds(VOCs) in atmospheric pressure air streams, so we has been used these technologies for destruction of VOCs. TCE, Benzene, Toluene, and Xylene were selected as objective materials. We have been studied each process and found many types of reaction parameters which effect on treatment efficiency. So combination processes, which are plasma-photocatalytic oxidation process and photolysis-photocatalytic oxidation process, have been used to increase destruction efficiency. Analysis of above materials and byproducts was carried out by GC-FID.

파일항타로 인한 주변 가옥의 안전성에 관한 연구

최정수 공주영상정보대학 1999 논문집 Vol.6 No.-

이 연구에서는 경부고속철도 3공구 현장에서 평택고가 교각기초시공을 위한 말뚝의 항타작업으로 인해 발생하는 소음과 진동을 측정하여 평택시 고덕면 방축리 일대 마을에 미치는 환경영향을 검토하였으며 다음과 같은 결론을 얻었다. ① P51의 B-1 말뚝과 P52의 E-6 말뚝을 타입하는 동안 측정된 소음은 지수함수적으로 거리에 따라 감소되는 형태를 보이며 83m 이상의 거리에서 등가소음도가 법적기준치인 75dB(A) 이하가 된다. 따라서 방축리 일대 마을에 대한 소음의 법적 규제치 이내에서 타격에 의한 말뚝을 시공할 수 없는 구간은 P54∼P68에 해당하며, 이 구간에 대한 말뚝 시공법의 변경이 요구된다. ② 연구대상 지역의 진동규제치는 주간에 70dB(V)로서 진동속도로 환산하면 0.89mm/sec의 수준에 해당한다. 진동속도의 최대벡터합으로 0.89mm/sec이하의 진동이 전달되는 거리는 54m 이상이며 평택고가의 P55∼P66구간에 해당한다. 따라서 이 구간내에서는 진동의 법적 규제치 이내에서 항타에 의한 말뚝 시공이 불가능하게 되므로 말뚝기초 시공법의 변경이 요구된다.

건축물의 조인트에 관한 고찰

최정수 공주영상정보대학 1998 논문집 Vol.5 No.-

시공조인트, 팽창조인트 등은 건축한다는 사람 치고 못 들어본 분은 없을 것이다. 그러나 내진조인트, 조절조인트, 미끄럼조인트, 힌지조인트 등을 들먹이면 아리송해 질 것이다. 이것들이 과연 필요한 것인가? 없앨 수는 없는가? 라는 생각이 앞설 경우가 많을 것이다. 실제로 맡은 경우에 팽창조인트는 없애려고 한다. 왜냐하면 철근콘크리트 건물은 콘크리트 타설 직후부터 건조수축을 일으키며, 이 건조수축은 온도상승이나, 습도상승 또는 다른 요소 때문에 생기는 팽창보다는 더 크기 때문이다. 따라서 팽창조인트란 말은 다른 구조재 즉 벽돌조, 돌구조, 철골구조와 같은 구조체에 더 적합할 것이다. 하지만 비정형 구조물이나 단면이 갑자기 변화하는 곳에서는 팽창조인트의 설치가 바람직하다. 적절한 조인트 설치는 장·단기적으로 구조물의 안전성에 큰 영향을 미치기도 한다. 따라서 구조물의 균열 발생을 최소화하고 안전성을 최대한 높이기 위해서는 현장 여건에 따라 조인트와 설치 유무를 결정한 뒤 적합한 조인트의 선정이 매우 중요하다고 할 수 있다.