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      • 비만증 환자에서 한약제에 의한 체중 감소효과

        Oh, Seung-Joon,Jeong, In-Kyung,Kim, Young-Seol,Choi, Young-Kil,Paeng, Jeong-Ryung,Bae, Jung-Hwan,Shin, Hyun-Dae 경희대학교 동서의학연구소 1999 INTERNATIONAL SYMPOSIUM ON EAST-WEST MEDICINE Vol.1999 No.1

        Seung-Joon Oh, In-Kyung Jeong, Young-Seol Kim, Young-Kil Choi, Jeong-Ryung Paeng¹, Jung-Hwan Bae and Hyun-Dae Shin²Department of internal Medicine, College Medicine, Endocrine Research Institute¹. Department of Rehabilitation, College of Oriental Medicine², Seoul, korea. Bady Fat Reduction Effects of Red Ginseng Compound Preparation on the Patients with Obesity. Proceedings of International Symposium on East-West Medicine, Seoul. 244-254, 1999.-Obesity can be defined as a metabolic disease due to an increased state of fat tissues caused by an imbalance of calorie intake and use. Recently, in Korea by improvement and westernization of food intake, along with decrease in exercise activities, the prevalence of obesity has increased greatly. Our objectives were to study stability and effects of decrease in body fat by administering red ginseng compound preparation (known to have body fat decreasing effects in laboratory animals) to obesity patients on low calorie diets. Changes in weight and body fat were measured while carrying out calorie-restricted diets on patients for 4 weeks, then administering red ginseng compound preparation for another 4 weeks. The patients were 20 people whose BMI were 25kg/㎡ or over and whose percent body fat was also 30% or over when tested by bioelectrical conductivity. 1. Changes in weight were from 70.04kg(base line) to 67.43kg(after taking red ginseng compound preparation). 2. In similar sense, BMI decreased from 27.12kg/㎡(base line) to 26.56kg/㎡(after dieting), and further to 26.01kg/㎡ (after taking red ginseng compound preparation). The BMI seemed to decrease significantly compared to the baseline after the use of red ginseng compound. 3. Waist hip ratio was changed from 0.8858(base line) to 0.8728, but it was statistically insignificant. 4. The percent body fat was 35,16%(base line), 33.87%(after dieting), and 31.68%(after taking red ginseng compound preparation). 5. Complete blood cell count and blood chemisrty remained unaffected by the administration. 6. In concern to endocrinologic studies, T3 decreased from 118.7 to 98.2ng/dL, and T4 increased from 8.8 to 9.2㎕/ dL. Epinephrine showed a tendency to decreased from 0.27 to 0.25 ng/mL, and norepinephrine increased from 0.39 to 0.44ng/mL. 7. Leptin was not changed. 8. Some patients complained adverse effects; constipation(5 patients, may be due to diet therapy), fatigue (2 patients), pruritus(2 patients), flushing(s patients), dizziness(3 patients) and epigastric discomfort(2 patients). However their symptoms were mild, so medication did not stopped. In conclusion, loss of weight without significant side effects was observed during low calorie diet and red ginseng compound preparation administration. This is thought to be in relation to sympathetic nerve system rather than adrenal gland. Also, further long0term studies should be required, since the observed results were based on short-term changes in weight.

      • 이행성 협심증 환자에서 운동부하 심전도 검사

        이정우,박형서,박용규,노상필,이유선,정승현,김보영,이재환,최시완,정진옥,성인환 충남대학교 의과대학 의학연구소 2003 충남의대잡지 Vol.30 No.1

        목적 : 관상동맥의 경련에 의한 이형성 협심증환자에 있어서 운동부하 심전도 검사의 결과는 매우 다양하다. 이에 저자들은 충남대학교병원 순환기내과에서 관상동맥조영술상 이형성 협심증으로 확진된 환자를 대상으로 운동부하 심전도 검사를 시행하여 이에 대한 결과를 연구하였다. 방법 : 1995년 1월부터 2002년 3월까지 흉통을 주소로 충남대학교병원 순환기 내과에 입원하여 관상동맥조영술을 시행하여 관상동맥의 내경이 50% 미만의 협착이 있고, 에르고노빈(ergonovine) 유발검사도 이형성 협심증으로 진단을 받은 233명중 운동부하 심전도 검사를 시행 받은 183명의 환자를 연구 대상으로 하였다. 운동부하 심전도 검사 결과의 판독시 발생할 수 있는 오류를 줄이기 위해서 운동부하 심전도 검사를 시행하기전 심전도상 ST분절의 상승(5예)이나 하강(8예)이 있는 경우 EH한 T파의 역위(19예)가 있는 32명의 환자를 제외한 총 151명의 환자를 대상으로 하였다. 운동부하는 Marquette사의 case 15 답차를 이용하였고, Bruce protocol에 따라 증상이 나타날 때까지 최대로 실시하였으며 각 stage 및 운동후의 혈압을 측정하고 12 유도 심전도를 기록하였다. 결과 : 1) 임상적 특성 - 내원시 임상 상은 안정형 협심증이 39예(25.8%), 불안정형 협심증이 103예(68.2%), 심근경색증이 9예(6.0%)이었다. 운동부하 심전도 검사 결과 양성 군과 음성군간에 있어서 당뇨병, 고혈압, 비만도, 총 혈청콜레스테롤치, 현재의 흡연 여부, 병력상 운동시 흉통의 유무, 내원시 임상적 진단, 협착의 정도, 연축의 수 등을 조사하였는 바 어떠한 인자들도 유의한 차이를 발견할 수 없었다. 2) 운동부하 심전도 검사 - 운동부하 심전도 검사를 시행 받은 151명의 환자중 음성인 경우는 134예(88.8%)이었고, 양성인 경우는 17예(11.2%)이었다. 양성 소견을 보인 환자들중 ST 분절의 상승이 4예(2.6%), ST 분절의 하강이 13예(8.6%)이었다. 3) 관상동맥조영술 - 관상동맥조영술상에서 혈관 경력 위치는 우관상동맥이 70예(46.1%), 좌전하동맥이 44예(28.9%), 좌회선동맥이 17예(11.2%)의 순으로 나타났다. 운동부하 심전도 검사상 ST 분절의 상승이 있었던 예중 Ⅱ, Ⅲ, aVF에서 ST 분절의 상승이 있었던 1예는 관상 동맥조영술상 우관상동맥에서 경련이 발생하였고, V2-V4에서 ST 분절의 상승이 있었던 2예중 관상동맥조영술상에도 좌전하행동맥에서 경련이 나타난 예는 1예이었으며 다른 1예는 좌회선동맥에서 경련이 나타났고, V5-V6에서 ST 분절의 상승이 있었던 1예는 관상동맥조영술상에도 좌회선동맥에서 경련이 나타났다. 운동부하 심전도 검사상 V5 또는 V6에서 ST 분절의 하강이 있엇던 13예중 6예(46.1%)는 관상동맥조영술상 우관상동맥에서 경련이 발생하였고, 3예(23.1%)는 좌전하행동맥에서, 1예(7.7%)는 좌회선동맥에서, 나머지 3예(23.1%)는 2개의 혈관이나 기타 분지에서 경련이 발생하였다. 결론 : 1) 이형성 협심증 환자는 운동부하 심전도 검사에서 11.2%의 양성소견을 보였다. 이중 ST 분절의 상승은 2.6%이었고, ST 분절의 하강은 8.6%이었다. 2) 이형성 환자중 운동부하 심전도 검사를 실시하여 음성을 보이는 경우 다혈관 관상동맥질환이기 보다는 이형성 협심증일 가능성이 더 높다고 예측할 수 있을 것으로 생각된다. 3) 이형성 협심증 환자중 운동부하 심전도 검사를 실시하여 ST 분절의 상승을 보이는 경우 다혈관 관상동맥질환이기 보다는 이형성 협심증일 가능성이 더 높다고 예측할 수 있을 것으로 생각된다. 4) 운동부하 심전도 검사 결과에 대한 당뇨병, 고혈압, 비만도, 총 혈청콜레스테롤치, 현재의 흡연여부, 병력상 운동시 흉통의 유무, 내원시 임상적 진단, 협착의 정도 등 어떠한 인자들도 3그룹(ST 분절의 상승, ST 분절의 하강, 음성)간에 유의한 차이를 발견할 수 없었다. 5) ST 분절의 상승 부위와 관상동맥조영술상 관상동맥의 연축이 일어나는 혈관과의 상관관계는 매우 높았다. No reports in the literature describe the results of exercise testings in a large number of patients with pure variant angina(coronary stenosis <50%) in Korea. In this report, We present the results of treadmil exercise testing in 151 patients with variant angina. 151 patients with angiographically proven coronary artery spasm underwent a treadmil exercise test. The clinical characteristics of variant angina patients classified according to ST-segment response to exercise were analyzed. Of 151 patients underwent a treadmil exercise test, negative result was seen in 134 patients(88.8%) and positive result was in 17 patients(11.2%). Of 17 patients saw positive result, exercise-induced ST segment elevation was present in 4 patients(2.6%) and ST segment depression was seen in 13 patients(8.6%). There was not a significant relationship between the ST segment response to exercise and the clinical variables(diabetes, hypertension, obesity, total cholesterol, current smoking, effort angina, clinical diagnosis, and degree of stenosis) assessed. Of 4 patients with ST segment elevation in treadmil exercise test, 1 patient with ST segment elevation in Ⅰ,Ⅲ,aVF had spasm in right coronary artery(100%) on coronary angiography, of 2 patients in V2-V4 had spasm in left anterior descending coronary artery in 1 patient(50%) and 1 patient in V5-V6 had spasm in left circumflex artery(100%). Positive treadmil exercise test was present in 11.2% of variant angina patient. If we have negative treadmil exercise result in patients with clinical manifestation of unstable angina at admission, we may have a suspicion of variant angina rather than multi-vessel disease. If we have exercise-induced ST segment elevation in patients with clinical manifestation of unstable angina at admission, we have a suspicion of variant angina rather than multi-vessel disease. Our result suggests that the correlation between the site of the ST segment elevation and the artery involved is quite good.

      • 임금피크제의 문제점과 개선방안 고찰

        정환석,신승국 용인대학교 인문사회과학연구소 2009 인문사회논총 Vol.- No.16

        Korea has gone into the aging society since 2002, and is now expected to enter aged society by 2018 and super-aged society by 2026. As such the aging of Korean population is now progressing at a rapid rate from the global perspective. A life span of Korean has been greatly prolonged and thus the proportion of the aged in the whole population has been increased steadily. These, in turn, are worsening all the poverty problems related with the aged and national pension scheme of which may put more burdens on national finance. Moreover, medical, healthcare, social security and employment issues are also accompanied with those previously stated problems. If the population ratio of the aged goes over 25% of total population then the economical power of the nation and its competitiveness in a global world can be weakened. It can also cause a decrease in working age population and which in turn may have negative impacts on the nation's overall industrial sectors. Hence, in order to avoid or prevent these undesirable situations, legal and/or political countermeasures on a national level are required. Moreover, about 40% of the nation's total population is expected to be converted into the aged population in just a few decades. Therefore a huge social crisis is anticipated, and that kind of social phenomenon can bring a serious situation on national level. In this regard, the salary peak system was introduced to Korea as a substitute for the voluntary retirement after financial crisis in 1998 but it is considered that the objective of the salary peak system in Korea was mainly for reducing labor costs while it is regarded as an alternative for the aging society in other countries. Accordingly this articles is studied to establish rational policies of salary peak system for aging society in Korea and also concepts of salary peak system, practical cases of firms and issues and improvement devices. Therefore, its current system seems to have several problems. First, Korean salary peak system fails to provide proper jobs for aged workers due to its fundamental problem of not focusing on utilizing aged work force but reducing cost, initially. Second, there are insufficient support from government necessary for carrying out salary peak system. Third, Korea has experienced a difficulty in reaching a consensus on salary peak system. Therefore, for securing the success of salary peak system, it is essential to solve these problems before its being introduced.

      • 난황낭종 환자에서 보존적 수술 및 항암 화학요법 후 성공적인 자연임신

        정은환, 홍승화, 박연진, 지일운, 김학순 충북대학교 의과대학 충북대학교 의학연구소 2012 忠北醫大學術誌 Vol.22 No.1

        침윤성 난소암의 경우 생식력의 보존이 중요한 도전이라고 할 수 있다. 20대 중반의 여성에서 거대 한 난황낭종이 발견되어 생식력의 보존을 위해 보존적 수술과 복합항암화학요법을 시행한 후 임신 및 출산에 성공한 증례를 경험하였기에 문헌고찰과 함께 보고한다.

      • 고화제의 종류에 따른 중금속 슬러지의 고형화 특성 연구

        정연구,이승환 金烏工科大學校 1999 論文集 Vol.20 No.-

        The solidification technology is a process to convert hazardous wastes into waste form suitable for safe disposal with an improvement of the physical and handling characteristics of the waste. In this study, three kinds of synthetic heavy metal sludges including Cu, Cr and Pb, respectively, were solidified with a cement-based and a lime-based solidification process. In a cement-based process, fly ash and lime was mixed with cement as an additive. Fly ash was used as a pozzolonic agent in a lime-based process. The unconfined compressive strength of solidified material was measured to test structural rigidity. The solidified heavy metal sludge was crushed to 2∼9.5mm and leached under the acidic condition using 0.1N acetic acid for 24 hours. The leachability of Cu was significantly reduced when it was solidified with cement/lime process. The amount of leached Cu decreased with an increase of lime addition. The two cement-based processes were found to be effective in solidification of Cr sludge. The chromium concentration in leaching solution was maintained at low value in a wide range of pH, which is outstanding feature of solidified Cr sludge. Lead sludge retarded the hydration of cement and resulted in low compressive strength of solidified material compared with other heavy metal sludge. Lime addition alleviated this adverse effect of lead sludge in cement-based solidification process. However, lime-based process was found not to be effective in development of compressive strength and reduction of leachability of heavy metals from solidified materials.

      • 전계발광소자를 위한 강유전체 박막의 제작 및 특성

        배승춘,김정환,김호운,박성근,김기완 경북대학교 센서기술연구소 1997 센서技術學術大會論文集 Vol.8 No.1

        PLT and PLZT feroelectric thin films were fabricated on ITO substrate by rf magnetron sputtering. Pressure was 30mTorr, rf power was 180W and substrate temperature was varied from room temperature to 500℃. In this case, PLT had the highest dielectric constant of 120 at 500 ℃, oppositly PLZT had the highest dielectric constant of 312 at room temperature. I-V characteristics of PLZT film were shown that leakage current of PLZT film deposited at room temperature was below 3μA at 100V.

      • '99학년도 호남대학교 신입생의 심리사회적 특성에 관한 연구

        염정의,오승환 호남대학교 1999 호남대학교 학술논문집 Vol.20 No.1

        This study analyzes the psychosocial characteristics of 1999 honam university freshmen. The psychosocial characteristics were consisted of study, personality interpersonal relationship, heaith, family relation, economic problem, friendship with the other sex, and guidance. The sample for the study consisted of 804 freshman. Statistical techniques such as frequency, Mean, standard deviation, t-test, one-way ANOVA, using SPSSWIN, were used to analyze the research questions of the study. As a result, the psychosocial characteristics of freshman is above the average. In particular, the psychosocial characteristics of freshmen shows dependence on sociodemographic variables (sex, growth region and high school satisfaction) and doesn't make any difference on region and college. Finally, the summary and recommendations are presented.

      • 퍼지알고리즘를 이용한 유도전동기 속도제어에 관한 연구

        조정민,전기영,함년근,이승환,이훈구,한경희 명지대학교 대학원 1999 대학원논문집 Vol.3 No.-

        The conventional PI controller are fragile in parameter variation and load-variation. Therefore, in this paper, a speed control algorithm based on the Fuzzy PI controller is proposed for the high performance speed control of a voltage ?? inverter to drive 3-phase induction motors. The computer simulation and experiment results show that the proposed controller are more excellent control characteristics than conventional PI controller in transient-state and steady-state response.

      • KCI등재

        제강 전로 및 고로 슬래그를 이용한 인제거 기법에 관한 기초연구

        이승환,장정화 대한상하수도학회 2004 상하수도학회지 Vol.18 No.2

        In this study, several series of experiments were conducted to investigate the phosphorus (P) removal process in slag-containing solution using fumace and converter slags. High amount of OH-, Ca^(2+) and alkalinity were discharged from the slags and hydroxyapatites [Ca_(5)(PO₄)₃(OH)] were kept accumulated on the surface of slag. P removal capacity of the slag decreased with the increase of slag dosage. The maximum capacity was found to be 11.25 mug at the converter slag. Converter slag adsorbed P more than fumace slag(about four times in average). An experimental study on the effect of pH shows that the percentage removal of P increased upto 30% at the pH range of 56 than that of abave pH 8. Langmuir isotherm constants gave a better correlation than Freundlich ones. P removal amount in the presence of NH₄^(+) was less compared to the one in the absence of NH₄^(+). Maximum percentage reduction was 23%.

      • 1997학년도 호남대학교 신입생의 인간관계 특성에 관한 연구

        염정의,이경희,오승환 湖南大學校 1997 호남대학교 학술논문집 Vol.18 No.1

        This study analyses the characteristics of human relations of the Honam University 1997 freshmen. The characteristics of human relations seem to be generally better than that of normative group. In particular, two human relations indices (i.e.. the human relations satisfaction index and the human relations vulnerability index) are consitituted, and they show dependence on sociodemographic variables (sex, religion, social economic status, high school satisfaction). Finally, the summary and recommendations are presented.

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