제1요수 불완전 하반신 마비 환자에서의 기능적 전기자극에 의한 훈련 증례보고

최현주,이수영,김종문,강선화,정순열,강곤,정진상 건국대학교 의과학연구소 1996 건국의과학학술지 Vol.5 No.-

Functional electrical stimulation(FES) is known to increase muscle bulk and strength and prevent muscle atrophy in complete paraplegic patients. And other benefits include peripheral adaptations which improve muscle endurance, girth, and appearance, as well as central circulatory adaptation which enhances aerobic(cardiopulmonary) capacity. Good candidates for FES include spinal cord injured patients who have clinically complete upper motor neuron lesion between T4-T12. But we experienced incomplete L1 paraplegic patient who has improved maximal knee extension power, endurance, circumference and cross-sectional area of the thigh and the shank after FES-induced exercise for 44 weeks. So we recommend more trial of the FES-induced exercise to not only complete but also incomplete lumbar paraplegic patients.

국내 의료종사자에서 HHV-8의 항체양성률에 대한 연구

주우철,최용준,박재은,이혜명,이진수,정문현,김수미,문지혜 대한감염학회 2008 감염과 화학요법 Vol.40 No.4

HHV-8 virus is known to be associated with Kaposi's sarcoma (KS) in HIV seropositive patients and its seroprevalence has geographic difference, In South Korea, incidence of KS is low not only in general population but also in HIV patients compared to other countries, It is speculated that low seroprevalence of HHV-8 has contributed to the low incidence of KS in South Korea. We examined the seroprevalence of anti HHV-8 IgG of HIV seronegative health care workers in one University hospital. Enzyme-linked immunosorbent assay(ELISA) was used for diagnosis. One person (0.6% 1/164) was seropositive, six were equivocal (3.7%,6/164) and 157 people were seronegative (95.73%, 157/164). This study revealed that seroprevalence of HHV-8 in general population was. low in South Korea. Further studies are needed to be carried out to evaluate the low HHV-8 seroprevalence in Korea.

횡문근융해증과 급성 신부전 및 범발성 혈관내 응고장애를 동반한 열사병 1예

최대은,박수진,권오경,이한규,이영모,이상주,나기량,이강욱,신영태 충남대학교 의학연구소 2003 충남의대잡지 Vol.30 No.2

Heat stroke is a life-threatening illness characterized by an elevated core body temperature that rises above 40% and central nervous system dysfunctions that results in delirium, convulsions, or coma. Heat stroke is subdivided into two forms, classic and exertional. Since strenuous exercise is one of the major exacerbating and precipitating factors, the incidence of exertional heat stroke is high among young adult, especially military personnel undergoing military training. Exertional heat stroke commonly causes rhabdomyolysis, lactic acidosis, acute renal failure, shock and pulmonary edema. We report a case of heat stroke with rhabdomyolysis, acute renal failure, disseminated intravascular coagulopathy(DIC) after strenuous exercise. A 18 year old man was admitted to the hospital because of loss of consciousness. He was a wrestler and he had tried to lose 6kg in weight by jogging and strenuous exercise on that summer day with hot temperature. The development of this illness was favoured by much clothes inappropriate for that environmental condition with a purpose to enhance sweating, and by restricted intake of water and food. On admission, the blood pressure was 80/50mmHg, and body temperature was 39.4℃ with stuporous mentality. Laboratory finding were as follows : in complete blood cell count, hemoglobin was 16.7g/dL and platelet count was 158,000/ mm³. In blood chemistry, AST 1061U/L, ALT 201U/L, BUN 30mg/dL, Cr 2.2mg/dL, LDH 941IU/L, CK 696IU/L were resulted. In arterial blood gas analysis, pH 7.39, pCO₂ 30mmHg pO₂ 86mmHg, HCO₃ 18.4mEq/L, O₂ saturation 96.7% were resulted. In urinalysis, specific gravity 1.025, protein 3+, erythrocyte 2+ were resulted. In brain imaging study, brain CT finding was normal. After appropriate treatments with rapid cooling, hydration and supportive care, he improved with alert mental status. On 2nd hospital day, in laboratory result, thrombocytopenia and coagulopathy were appeared and renal insufficiency was aggravated. So he was treated with platelet concentrate and fresh frosen plasma for DIC, and enough hydration for appropriate urine volume preservation. After all, On 22nd hospital day, he fully recovered and discharged. Nowadays, with followed for some duration, he is wellbeing with no complications.

15 kVA급 저항형 초전도 전류제한기의 전류제한특성

최효상,최창주,이상일,정수복,오금곤 조선대학교 에너지.자원신기술연구소 2004 에너지·자원신기술연구소 논문지 Vol.26 No.1

We investigated resistive superconducting fault current limiters (SFCLs) fabricated using YBCO thin films on 2-inch diameter sapphire substrates. Nearly identical SFCL units were prepared and tested. The units were connected in series and parallel to increase the current and voltage ratings. A serial connection of the units showed significantly unbalanced power dissipation between the units. This imbalance was removed by introducing a shunt resistor to the firstly quenched unit. Parallel connection of the units increased the current rating. An SFCL module of 4 units in parallel, each of which has minimum quench current 25 A_(peak), was produced and successfully tested at a 220 V_(rms) circuit. From the resistance increase, we estimated that the film temperature increases to 200 K in 5 msec, and 300 K in 120 msec. Successive quenches revealed that this system is stable without degradation in the current limiting capability under such thermal shocks as quenches at 220 V_(rms).

벼멸구 생태형의 성장 특성별 감로 배설량의 차이

최주수,박영도 동의대학교 기초과학연구소 2000 基礎科學硏究論文集 Vol.10 No.1

Some attempts were made to investigate the honeydew excretion of the brown planthopper(BPH), Nilaparvata lugens Stal, biotypes in terms of instar nymph, days after emergence, macropterous and brachypterous mated and unmated female, and macropterous female with different sources fed on 60-day-old rice cultivars with different resistance genes. The feeding amount of the BPH biotypes was measured by using the honeydew excretion test. The feeding amount of fifth instar on Miryang 23 with no resistance gene was higher than that of Cheongcheongbyeo with Bph-1 gene by two times. Macropterous females and brachypterous showed low feeding amount at first day after emergence, but they showed high feeding amount from second days after emergence. Also the feeding amount of brachypterous female was higher than that of macropterous female. In addition, the feeding amount of BPH was in the order of nymph$lt;macropterous male$lt;brachypterous male$lt;macropterous unmated female$lt;macropterous mated female$lt;brachypterous unmated female$lt;brachypterous mated female. The feeding amount of the BPH biotype-1, 2, and 3 on Miryang 23 was in the order of laboratory(the insects reared for at least 10 generation in the laboratory)$lt;field(the insects obtained from rice fields, 2 generation after migration)$lt;migration(the insects caught directly from migrating population). The feeding of biotype-2 on Cheongcheongbyeo and biotype-3 on Miryang 63 with bph-2 gene was as high as that of biotype-1,2, and 3 on Miryang 23.

유전알고리즘을 이용한 배전손실 최소화에 관한 연구

최대섭,이상일,오금곤,정수복,김창석 조선대학교 에너지.자원신기술연구소 2001 에너지·자원신기술연구소 논문지 Vol.23 No.2

This paper presents a new method which applies a genetic algorithm(GA) for determining which sectionalizing switch to operate in order to solve the distribution system loss minimization re-configuration problem. The distribution system loss minimization re-configuration problem is in essence a 0-1 planning problem which means that for typical system scales the number of combinations requiring searches becomes extremely large. In order to deal with this problem, a new approach which applies a GA was presented. Briefly, GA are a type of random number search method, however, they incorporate a multi-point search feature. Further, every point is not is not separately and respectively renewed, therefore, if parallel processing is applied, we can expect a fast solution algorithm to result.

Drosophila melanogaster에 있어서 Methyl methanesulfonate의 영향에 대한 생리유전학적 연구

최혜영,최영현,이원호,최주수 동의대학교 기초과학연구소 1998 基礎科學硏究論文集 Vol.8 No.1

Methyl methanesulfonate (MMS) was fed to Drosophila melanogaster in order to investigate its toxic capability at developmental and adult stages, and the hereditary effect of toxicity and the potency for induction of sex-linked lethal mutation during the spermatogenesis by the means of an attached-X method. In the control group, the egg to adult viability of D. melanogaster was 95.2%, while 3.5mM and 5.0mM treated groups were 90.0% and 84.1%, respectively. In the case of their progenies (F₁), the viability was 96.9% in the control group, while 3.5mM and 5.0mM treated groups were 54.5% and 1.6%, respectively. Therefore, these differences between two generations show significant physiological toxic effects in the next generation. In the parental generation, the developmental time was calculated 11.05 days in the control group, 12.43 days in 3.5%mM treated group, and 13.23 days in 5.0mM. In the case of F₁it was estimated 10.35 days in the control group, and 11.43 days in 3.5mM treated group. Compared with the control groups in two generation, the developmental time generally delayed as the dose of MMS increased. As to the sex-ratio, there was no differences between the control and MMS treated groups. The toxic values of adult stage showed which increased the frequency of mortality with MMS concentrations. The mortality at 120hr in the control group was 1.67% and it in 0.5mM MMS treated group 3.33%. In 2.5mM MMS treated group, it was 33.3% at 72hr, and it 95% at 120hr. The increase of the morality was shown from 72hr in 4.0mM treated group which was 100% at 96hr. There was the concentration-dependent induction of sex-linked lethal mutation during the spermatogenesis by means of an attached-X method, MMS had more pronounced effect in sperm and spermaid stages in D. melanogaster.

Delaware 포도의 무핵재배에서 엽·신초·과립의 생장 및 성숙에 따른 화학성분의 변화

최주수 동의대학교 기초과학연구소 1998 基礎科學硏究論文集 Vol.8 No.1

This study was carried out to clarify seasonal changes of chemical compositions and their interrelation in leaves, shoots and berries treated with gibberellin(GA₃) for seedless grapes in 'Delaware' grapevines. The clusters were dipped twice with 100 ppm GA₃: 10 days before and after the full bloom. The results obtained as follows ; 1. Cumulative growth curve of berry fresh weight showed a double sigmoid curve and the characteristics of three distinctive growth stages(Ⅰ, Ⅱ, Ⅲ)were weekened with GA₃treatment. 2. While the contents of ash, total carbon, total nitrogen and total carbohydrate had little relation with development and ripeness of berries, those of total sugar and starch had close relation, viz., they decreased with enlargement and maturity of berries, but increased rapidly after harvest in leaves and shoots. Especially, total sugars in leaves and shoots decreased coincidently with starch-increasing in shoots at November. 3. The contents of total soluble solid and reducing sugar in berries increased rapidly at growth stage Ⅲ, but those of total titratable acidity and organic acid decreased coincidently with sugar-increasing. 4. The berry-hardness increased until growth stage Ⅰ, and then stagnated until growth stage Ⅱ, thereafter decreased rapidly at growth stage Ⅲ. Juice viscosity stagnated until growth stage Ⅱ, and then increased rapidly at growth stage Ⅲ. pH of berry-juice decreased until growth stage Ⅱ, afterwards increased at growth stage Ⅲ. 5. By correlation and path coefficient analysis between qualitative characters and the ratio of total soluble solid to titratable acidity(。Brix/Acidity), total correlation coefficients were all highly significant. Of these characters, pH and viscosity of berry-juice were positive, but brightness and hardness of berry, negative. The direct effect of pH on 。Brix/Acidity ratio, p4y=0.9090, was large positively and those of berry-hardness and juice-viscosity, p1y=0.5938, median and, p2y=0.3550, small, respectively. Direct effect of brightness was negatively small.

韓國 信用割富의 巨視經濟效果에 대한 計量分析

최성철,주수현 釜山 外國語 大學校 1997 外大論叢 Vol.16 No.1

The interest rate is the adjustment mechanism in loan markets. An equilibrium has seldom acquired in loan markets because of characteristics of loan markets such as default risk, borrower classification, customer relationships, and imperfect imformation. Credit rationing can be defined as a situation in which there exists an excess demand for loans because quoted loan interest rates are below the Walrasian market clearing level. Generally, firms which request loans for the investment act as promary borrowers in loan markets. The availability of credit affects the amount of investment. So, credit rationing affects macroeconomic varibles through the investment of firms. The purpose of this study is to analyze the macroeconomic effects of credit rationing. For this prupose, we have examined the effects of credit rationing on real GNP, price level, interest rate of private bonds, and investment. We have tried stationarity of variables with unit root test and cointegration test. Then, we have applied vector error correction medel to variables which have stationary relation.

폐모세포종 : 1례보고 A Case Report

최영호,서홍주,임영혁,김정중,박성강,이석기,임진수,김은규 조선대학교 2001 The Medical Journal of Chosun University Vol.26 No.2

Pulmonary blastoma is a very rare primary neoplasm of the lung. We experienced a case of pulmonary blastoma in a 40 years old man. The mediobasal segmentectomy of the right lower lobe was performed. The patient was discharge on the postoperative days 6. There is no evidence of recurrence or metastasis on followup study during 7 months period after operation.