한강수계분지내 하천수의 지구화학적 특성

서혜영,김규한 이화여자대학교 환경문제연구소 1997 이화환경연구 Vol.1 No.-

한강 수계 분지 내의 하천수 (지표수)와 서울 지역 지핫의 화학적 특성 규명과 용존 이온종의 기원을 연구하기 위해 1996년 3월-4월 동안 하천수 시료 60개에 대하여, pH, TDS 등과 용존이온의 화학분석을 실시하였다. 남한강과 북한강 하천수의 화학성분은 주로 수계분지 지역에 분포하는 암석에 의해 영향을 받고 있으며, 한강본류의 하천수는 인위적인 오염에 의한 영향이 크게 나타나고 있다. 즉, 남한강은 상류지역에 분포하는 탄산염암, 탄광 및 금속광산 폐수등에서 용출된 Ca(), Mg(), HCO(), SO() 등이 현저하며 북한강은 화강암질암의 풍화 산물인 K(), Na(), Ca()등의 이온종이 특징적이다. 한편 양수리에서 상기 2개 하천이 합류하여 서울 도심을 지나는 한강 본류는 SO(), NO(), PO(), Cl()등 생활하수 오염의 영향이 현저하게 나타나고 있다. 한강 본류로 유입되는 서울 지역의 왕숙천, 탄천, 중랑천, 안양천의 4개의 지천은 NO(), Cl(), PO(), SO(), Mn등 인위적인 오염현상이 크게 나타나고 있다. 한강 하천수의 화학 성분의 군집, 요인 및 회귀 분석 결과, 전체 자료 분산은 오염 인자에 의한 분산이 약 79%, 지질과의 물-암석 반응에 의한 분산이 약 7%이다. 남한강과 북한강의 합류 지점에서의 Cl에 대한 혼합 비율은 약 60:40이다. 1981년 분석 자료와 1996년 자료의 비교에서 암석 풍화에 의한 1차적 용존 성분인 Ca(), Mg(), HCO()등은 변화가 적으나 Na(), NO(), PO(), SO()등 인위적 오염원의 성분은 크게 증가하는 경향이 있다. To investigate geochemical characteristics and the sources of the dissolved ion species in the river water in the Han river drainage basin, samples were collected at 60 sites from the Han river drainage basin. The data for pH, conductivity, TDS(total dissolved solid), temperature, and concentrations of dissolved ions were obtained as follows:(1) The geochemical characteristics of the surface water in the South and North Han river drainage basins are mainly controlled by bed rock geology in the drainager basin and in the main stream of the Han river considerably affected by anthropogenic pollution. The South Han river water samples have high concentration of Ca() (ave. 15.42ppm), Mg()(ave. 2.74 ppm), HCO()(ave 51.9ppm), which evidently indicates that the bed rock geology in a limestone area mainly controls the surface water chemistry. The concentration of SO() is remarkably high(SHr10-2:129.9ppm) because of acid mine drainage from the metal and coal mines in the upper reaches of the South Han river. (2)The South Han river and the North Han river join the Han river in the Yangsuri, Kyounggido and flow through Seoul metropolitan city. The mixing ratio is about 60:40 at the meeting point(sample number HR10). (3)The result of factor analysis suggests that the pollution factor accounts for about 79% and the bed rock type factor accounts for about 7% of the data variation. This means that the geochemical characteristics of the Han river water mainly controlled by anthropogenic pollution in the South Han river and main stream of the Han river drainage basin. (4)The chmical data for four tributaries such as the Wangsukcheon, the Tancheon, the Zungrangcheon, and the Anyangcheon show that the concentration of pollution elements such as NO(), Cl(), PO(), SO() and Mn are high due to municipal waste disposal.

Risk of Traumatic Intracranial Hemorrhage From Low-Energy Falls in the Oldest-Old Patients

Sung Kyu Kim,Ki Young Jeong,이종석,Han Sung Choi,홍훈표,고영관 대한노인병학회 2016 Annals of geriatric medicine and research Vol.20 No.4

Background: The population of individuals classified as oldest-old (aged ≥85 years) has increased rapidly in recent years. The rates of morbidity from chronic diseases and physical dependence tend to be higher in the oldest-old compared with individuals classified as young-to-middle-old (aged 65-84 years). Therefore, the classification and evaluation of traumatic injuries in the oldest-old group are necessary. Herein we focused on the risk of traumatic intracranial hemorrhage from low-energy falls in older patients. Methods: Patient medical records from the Emergency Department after low-energy falls that occurred between November 2014 and April 2016 were retrospectively analyzed. Patients were divided into an older group (aged ≥65 years) and an adult group (aged 18-64 years); the older group was subdivided into the oldest-old group (aged ≥85 years) and a young-to-middle-old group (aged 65-84 years). The rate of intracranial hemorrhage and related factors were also investigated. Results: The older group had a greater risk of traumatic intracranial hemorrhage than the adult group (20% vs. 12.6%, p=0.019). Furthermore, more cases of traumatic intracranial hemorrhage were found in the oldest-old group than in the young-to-middle-old group (37.5% vs. 18.0%, p=0.024). Similarly, the risk of traumatic intracranial hemorrhage in the oldest-old was higher than in the young-to-middle-old group (p=0.032). Conclusion: The risk of traumatic intracranial hemorrhage from low-energy falls in the oldest-old patients was higher than in the young-to-middleold patients. Therefore, physicians need to pay particular attention to oldest-old patients, even to those with mental integrity and without neurological deficits.

用寒遠寒과 用熱遠熱에 대한 考察 : 六元正紀大論에서

채영진,신창환,임현택,여성원,한성규,이재원,정헌영,금경수 한국전통의학연구소 2003 한국전통의학지 Vol.13 No.1

Five elements motion and six kinds of natural factors influence not only human disease but also difference of medicine effect. Because the climate of summer is very hot, that is easy to increase the properties of hot medicines, a doctor must be careful to use it in summer. Also the climate of winter is very cold, that is easy to increase the properties of cold medicines, a doctor must be careful to use it in winter. But in the certain conditions to use diaphoretics or purgatives, in spite of that regulation a doctor can use them.

응력 제한조건하의 신뢰성 기반 형상 최적설계

오영규(Young-kyu Oh),박재용(Jae-kyu Oh),임민규(Min-gyu Im),박재용(Jae-yong Park),한석영(Seog-young Han) 한국생산제조학회 2010 한국생산제조학회지 Vol.19 No.4

The objective of this study is to integrate reliability analysis into shape optimization problem using the evolutionary structural optimization (ESO) in the application example. Reliability-based shape optimization is formulated as volume minimization problem with probabilistic stress constraint under minimization max. von Mises stress and allow stress. Young's modulus, external load and thickness are considered as uncertain variables. In order to compute reliability index, four methods, i.e., reliability index approach (RIA), performance measure approach (PMA), single-loop single￢vector (SLSV) and adaptive-loop (ADL), are used. Reliability-based shape optimization design process is conducted to obtain optimal shape satisfying max. von Mises stress and reliability index constraints with the above four methods, and then each result is compared with respect to numerical stability and computing time.

고령자 남녀와 20대 남녀에 있어서 다양한 등속수축중 최대 모멘트의 비교

金智源(Ji-Won Kim),金相佑(Sang-Woo Kim),文基旭(Ki-Wook Moon),嚴光文(Gwang-Moon Eom),李泳揆(Young-Gyu Lee),南貞淑(Jung-Sook Nam),朴寬龍(Kwan-Yong Park),金耀翰(Yo-Han Kim),洪廷和(Jeong-Hwa Hong),朴炳奎(Bung-Kyu Park) 대한전기학회 2008 전기학회논문지 Vol.57 No.10

In this paper, we investigated the maximum ankle joint plantarflexion moment (MPM) of young and elderly subjects during various modes of isokinetic contractions with special interest in the elderly females who were reported to have higher fall rate than the elderly males. Subjects include the young subjects (14 males: 22.7±2.5yrs, 13 females: 20.5±1.3yrs) and the elderly subjects (17 males: 65.8±10.5yrs, 26 females: 71.4±5.2yrs). The MPM was normalized by each subject's body weight. The MPM of elderly females was the weakest among the groups, particularly, at the eccentric contractions. The male-to-female ratio of MPM was greater in the elderly than in the young and the young-to-elderly ratio of MPM was greater in female than in male, both during the eccentric contractions. The result suggests that the decreased muscle force per body weight, especially at the eccentric contraction, may be one reason for the more frequent fall of the elderly female than the elderly male.

供給重視經濟學의 政策效果에 관한 理論的 分析

韓圭泳 군산대학교 1986 群山水産專門大學 硏究報告 Vol.20 No.2

Supply side economics is advocated improtance of supply side for the revival of American economics comming to a crisis. It is advocated that to decrease in income tax is to increase of the will to work increase the rate of savings as well as investment activity, Increase supply power and tax revenues. Supply side economics is the same concern as monetarist and rational expectationist in the point of anti-Keynesian, but essentially has a complete heterogeneous frame and paradigm. The supply side economics is the economics of national salvation, the give many incentives rather than demand side is to increase, to increase of national income to rise productivety and economic growth. The basic thought of supply side economics sthat taxflation levying high rate to indiviual and firms is to be chronic to decrease of private savings rate, and to decrease investment and production, and so judging those are the main causes of stagflation. The Reagan's economic policy is appearing a reverse happening to the beginning and it is now too early to criticize about thats but I hereby point out about a point of theorical doubt only. A traditional economist reviews that tax reduction is not effect giving a plus to the morale (the will to work), but an effect giving a minus to supply side. Stagflation, concurrent complicated appearance, and it shall lead to deeply the more stoagflaction and inflation. Namely, the supply side economics itself is proceeding to make frame, not completing. It may be true that we may not appraise generally the economic policy because the policy is standing on both sides of foil and effect; the policy is "American" and "Economics Experimentation". The theory that tax reduction can add saving to invest capital formation, economic recovery and guarantee the economic growth, may not come into being for theory. I believe in conclusion as followings: The demand side economics of original economic theory succeeded from Keynes and the supply side economics have faults each other, and it is the best that we must present a new aggregative theory for the complement of their faults and defects.

교정환자의 장치 순응도와 관련된 요인들의 조사연구

한은주,유영규 대한치과교정학회 1993 대한치과교정학회지 Vol.23 No.4

In orthodontic field, although lots of new materials have been developed and many mechanics introduced, we can face the case patient cooperation still remain a problem to solve. So, factors related to the compliance of 254 adolescent orthodontic patients using intraoral elastic or extraoral orthopedic appliances were under investigation. The study subjects were 11 to 18 years old and from 5 exclusive orthodontic clinics in Seoul. The subjects were asked to fill a questionnaire and compliances were evaluated by their assigned orthodontists. The questionnaire was consisted of 63 questions, and they represent 13 factors―7 psychological & 6 nonpsychological fators. The collected data were analyzed using ANOVA test between the compliance group and the factors. 1. The compliances were evenly distributed in both sex and age groups. 2. As a whole, it was found that the Attitude towards appliances ffactor affected the degree of compliance. 3. Besides that, in younger(11-12) age group, Pain and discomfort associated with treatment factor was also found to be related to the degree of compliance. 4. On the contrary, in older(16-18) age group, the degree of compliance was influenced by the factor of Achievement motivation, Role expectation, parental relationship.

사람 갑상선자극호르몬 수용체를 발현하는 Chinese Hamster Ovary(hTSHR-CHO)세포를 이용한 자극형 갑상선자극호르몬 수용체 항체 활성 측정의 임상적 유용성

한희정,원진호,채수홍,김현진,송민호,김영건,노흥규 충남대학교 의과대학 지역사회의학연구소 2000 충남의대잡지 Vol.27 No.1

Detection of thyroid stimulating hormone receptor(TSHR) autoantibodies has clinical value in establishing the diagnosis of Graves ' disease, and in predicting its clinical course with high sensitivity and high specificity. Especially, TBII using radioreceptor assay has been widely used. Recently, for detecting thyroid stimulating antibody(TSAb), a sensitive method using human TSH receptor-transfected Chinese Hamster Ovary(CHO) cells has been developed and clinically used. The aims of this study are to determine the change and discrepancy of 2 TSHR autoantibodics in clinical course and to evaluate the correlation between 2 autoantibodies. We measured TSAb and TBII in 30 newly diagnosed and untreated patients and in 73 previously diagnosed as Graves ' disease and treated with antithyroid drug. Also we compared the changes of the antibodies in clinical course and correlation between 2 antibodies. Thes results are summarized follows. 1. In newly diagnosed patients, all of the 30 patients had positive TBII and/or TSAb. None of them had negative TBII and negative TSAb. And in newly diagnosed patients, mean TBII and mean TSAb values are 46.8% and 361%, respectively. In 73 treated patients mean values are 18. 7% and 196% each other. Therefore, newly diagnosed group has significant greater TBII and TSAb than antithyroid drug-treated group. 2. TBII was significantly different between euthyroid group and thyrotoxic group in antithyroid drug-treated patients, but TSAb was not. 3. TBII was sequentially decreased as increased medication duration, but TSAb was not shown sequential decrease as increased medication duration. 4. There was significant negative correlation between cumulative doses of antithyroid drug and TBII, but no significant correlation between cumulative doses and TSAb. 6. There was significant positive correlation between TBII and TSAb in total patients group and in antithyroid drug medication group, but not in newly diagnosed group. In conclusion, in Graves ' disease patients, detection of TSHR antibodies are clinical values in establishing the diagnosis and prediction of clinical course. A method detecting TSAb using hTSHR-CHO cells should be further studied for standardization of measurement, and for detecting the changes of TSAb in clinical course, long-term follow-up of patients are important.

전자 빔 프로파일에 의한 밝은 영역에서의 명암 보정

한찬호,정영헌,최덕규 경운대학교 산업기술연구소 2001 産業技術硏究論文誌 Vol.3 No.2(B)

In this paper, we present a compensation method of contrast loss in highly bright region by CPT beam profile. In the proposed method, the local difference signal for the compensation is transformed according to the local mean of luminance. In computer simulation, clear image is obtained by the compensation of contrast loss in highly bright region.

환경문제와 환경산업의 개발전략에 관한 연구

한규영 군산대학교 지역개발연구소 2000 地域開發硏究 Vol.12 No.-