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박기헌,박원일,이보연,이병식,조동제,송찬호,Park, K.H.,Park, W.I.,Lee, B.Y.,Lee, B.S.,Cho, D.J.,Song, C.H. 대한생식의학회 1993 Clinical and Experimental Reproductive Medicine Vol.20 No.1
Salpingoscopy may be helpful in the diagnosis of subclinical epithelial, vascular damage and stricture formation, which may playa significant role in infertility, or predispose women to tubal pregnancy, despite of clear demonstration of tubal patency on hysterosalpingogram. We explored the fallopian tube from the fimbriae to the ampullary-isthmic junction with small rigid flexible endoscope during laparoscopy in sixteen patients from July 1991 to Jan. 1992. All patients have been observed following salpingoscopy for several months. Three pregnancies were achieved in seven patients with bilaterally normal or minimally damaged tubal mucosa. In another five patients with moderate to severe tubal damage, we noted one tubal pregnancy. The other remaining patients are being followed up now. As conclusions, salpingoscopy seems to be an useful tool in the diagnosis of tubal lesions which are not identified by H.S.G., give much help to refine the indications for tubal microsurgery and the selection of patients for GIFT or IVF-ET and to determine the prognostic value in terms of risk for ectopic pregnancy.
다낭성 난소 증후군 환자에서 비만군과 비비만군에서의 인슐린 저항성
임영구,이병석,조은정,차동현,박원일,박기현,조동제,이국,송찬호,이은직,Lim, Y.K.,Lee, B.S.,Cho, E.J.,Cha, D.H.,Park, W.I.,Park, K.H.,Cho, D.J.,Lee, K.,Song, C.H.,Lee, E.J. 대한생식의학회 1994 Clinical and Experimental Reproductive Medicine Vol.21 No.1
This study was designed to investigate the relationship between insulin resistance and obesity in the pathogenesis of polycystic ovarian syndrome(PCO). Twenty-two women with PCO, of whom thirteen were non-obese with body mass index(BMI, kg/$m^2$) of <25 and nine were obese with BMI${\geq}$25 were studied. Eight non-obese control women and seven obese control women were studied. Serum concentrations of testosterone, lutenizing hormone(LH)/follicle-stimulating hormone(FSH) ratio, and insulin-like growth factor I (IGF-I) were found to be significantly higher(P<0.05) in PCO women compared with control women, which clearly is not related to obesity. Serum glucose, insulin, and C-peptide levels were measured during a 2-hour oral glucose tolerance test(OGTT). Non-obese and obese women with PCO both(P<0.05) compared with control women demonstrated significant hyperinsulinemia after OGTT. The degree of hyperinsulinemia was found to be significantly higher in the obese women with PCO compared with the non-obese women with PCO. We concluded that obesity may contribute to hyperinsulinemia, however may not playa central role in the pathogenesis of PCO.
CO2 지중저장을 위한 저장용기 조건에 따른 시뮬레이션 및 실험적 연구
송찬호(C. H. Song),윤석호(S. H. Yoon),이공훈(K. H. Lee) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11
CCS (carbon capture and storage) is recently issued due to green house effect and many studies have been conducted. As one of CO2 sequestration, CO2 is stored in deep and stable underground. In this paper, simulation of CO2 storage tank is conducted for CO2 injection system. In addition to simulation, experimental study for super critical condition of CO2 also is conducted. Storage tank is modeled and simulated by simulink program. For experiment, several components such as heat exchanger, injection pump, heater and storage tank are installed and operated. Liquid CO2 is flowed into pump from storage tank and super critical CO2 injection can be estimated.
송찬호(C. H. Song),임병주(B. Z. Lim),박창대(C. D. Park),안국영(K. Y. Ahn),노양호(Y. H. No),김현섭(H. S. Kim) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.5
A numerical and experimental analysis on the membrane humidifier for PEM(Proton Exchange Membrane) fuel cell is presented in this work. Some parameters such as flow channel width, height and number are considered and studied by applying CFD analysis. From these results, the shape in the humidifier is optimized and tested by experiment. Nafion 115 is adopted as membrane material and the number of layers is 50. The conditions in residential fuel cell are applied to the experimental conditions. From the experiment, approach temperature 7.4 ℃, consuming power 9.1 W and R.H in the outlet of the humidifier 100% are obtained.
이미화,박기현,송지홍,조동제,황동훈,송찬호,Lee, M.H.,Park, K.H.,Song, J.H.,Cho, D.J.,Hwang, D.H.,Song, C.H. 대한생식의학회 1994 Clinical and Experimental Reproductive Medicine Vol.21 No.3
In order to define the clinical characteristics of Korean women with polycystic ovary syndrome, clinical symptoms, biochemical features and ultrasonographic findings were determined in ninety PCO patients. Frequency of clinical manifestations were as follows:acne 42%, overweight 31 %, oily skin 14 %, hirsutism 10%. Relatively low frequencies of hirsutism is recognized in patients with Korean PCO syndrome. Mean(${\pm}$S.E.) of each hormone was:testosterone 1.18${\pm}$1.07ng/ml, LH 21.47${\pm}$${\pm}$2.6mIU/ml, FSH 7.26${\pm}$2.67mIU/ml, LH/FSH ratio 2.94${\pm}$1.29, prolactin 25.48${\pm}$46.33ng/ml, DHEA-S 333.78${\pm}$309.60ng/dl, 17-0HP 1.72${\pm}$1.74ng/ml. Mean 17-OHP after ACTH stimulation test was 5.07${\pm}$12.01ng/ml. Ultrasonographically measured mean ovarian volume were $11.02{\pm}5.92cm^3$ in right and $9.23{\pm}5.64cm^3$ in left and small sized multiple subcapsular follicular cysts were noted in 43 patients (47.9%) with PCO syndrome.