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Continuous Ambulatory Peritoneal Dialysis 를 받고 있는 만성신부전 환자에서 지단백과 Apolipoprotein B 의 변화에 관한 연구
박금수(Keum Soo Park),강명서(Myung Seo Kang),조한선(Han Sun Cho) 대한내과학회 1992 대한내과학회지 Vol.43 No.2
N/A Background: Although the potential metabolic impact of continuous ambulatory peritoineal dialysis (CAPD) and hemodialysis (HD) might be expected to differ significantly, the plasma lipid and lipoproteins have been studied in much less detail in CAPD patients than in HD patients, The purpose of the present study was to investigate the lipid and lipoproteins in CAPD patients, and to compare these results with values obtained from HD patients and a control group with normal renal function. Methods; Total cholesterol(TC), triglyceride(TG), high-density lipoprotein(HDL) cholesterol, low-density lipoprotein (LDL) cholesterol, apolipoprotein(Apo) Al and B were measured in 36 CAPD patients and in 44 HD patients and in 24 healthy persons for a control group. Resuls: The levels of TC, LDL Cholesterol, HDL Cholesterol, Apo B and Apo al were reduced in HD patients, HDL Cholesterol and Apo Al were reduced in the CAPD patients compared with normal controls. In CAPD patients, elevated TC, LDL Cholesterol, Apo B and Apo Al were frequent in the female patients compared with the male patients. However, there were no differences between the male and female patients in HD patients. The levels of TC, TG and LDL Cholesterolwere reduced in HD patients compared with CAPD patients. There were same results between two subgroups selected for patients with the similar le of time on dialysis. Conclusion: Our results suggest that the risk of developing cardiovascular disease in patients treated with CAPD cannot be related to changes in the TC, LDL Cholesterol and Apo B.
박수열(Soo-Yeol Park),원병연(Byung-Yeon Won),여금수(Keum-Soo Yeo),지창환(Chang-Hwan Ji),오영민(Young-Min Oh) 한국연안방재학회 2016 한국연안방재학회지 Vol.3 No.3
Light beacon structures are very essential to the maneuvering of ship especially in the night. The power is usually from the rechargeable battery connected to solar panel which generates electricity from the sunlight. There are two types of structures, one is floating and the other is fixed. In this study, we are dealing with the new power generation system motivated by the wave motion for the floating light beacon. The basic principle of new system is transforming wave motion into electricity by the solenoid that composed of circular tube coiled around and magnetic inside. We succeeded in generating electricity in the lab test using the motion actuator. On the basis of lab test experience it is applied to the real field, Samchuk port. The power unit is installed in the floating light buoy and generating electricity when the inclination of the buoy is beyond the certain limit. The amount of electricity depends on the wave height and wave period. The purpose of field test is to clarify the relationship between the wave condition and electricity.
연성 광 PCB용 광 배선의 손실특성 및 제작 공차 분석
염준철,박대서,김영석,김대찬,박세근,오범환,이일항,이승걸,전금수,Yeom, Jun-Cheol,Park, Dae-Seo,Kim, Young-Seok,Kim, Dae-Chan,Park, Se-Geun,O, Beom-Hoan,Lee, El-Hang,Lee, Seung-Gol,Jeon, Keum-Soo 한국광학회 2008 한국광학회지 Vol.19 No.4
광 백 플레인이나 광 연결용으로 활용될 수 있는 연성 광 PCB의 핵심 요소인 광 배선(도파로)의 전파 특성을 분석하였으며, 광배선 제작 공정에서 발생할 수 있는 구조적 오차로 인한 전파 손실 발생 문제를 다루었다.제작 공차 분석을 통해 전파 손실을 -1 dB/mm 이하로 유지하기 위해서는 광 배선 측벽 각도가 $1^{\circ}$ 이내로 제어되어야 하며, 결합 손실과 구부러짐 손실을 각각 -1 dB 이하로 유지하기 위해서는 광원과 광 배선 간격은 $160\;{\mu}m$ 이내, 횡방향 정렬 오차는 ${\pm}15\;{\mu}m$ 이내, 광원 각도는 $6^{\circ}$ 이하로 정렬되어야 하며, 광 배선의 구부러짐 반경은 5 mm 이상이 되어야 함을 알 수 있었다. In this study, the propagation characteristics and the fabrication tolerance of an optical wire in a flexible optical PCB were analyzed by using a ray-tracing method. It is found from the analysis that the sidewall angle of a core should be controlled within $1^{\circ}$ in order to maintain the propagation loss to less than -1 dB/mm, and that the bending radius of the optical wire should be larger than 5 mm in order to suppress the bending loss below -1 dB. In addition, it is confirmed that the lateral misalignment of ${\pm}15\;{\mu}m$, and the angular tilting of VCSEL of $6^{\circ}$ are allowable for the coupling loss of -1 dB.
뇌혈관질환과 관상동맥성 심질환의 위험요인에 관한 환자-대조군 연구
박종구,김헌주,박금수,이성수,장세진,신계철,권상옥,고상백,이은경,Park, Jog-Ku,Kim, Hun-Joo,Park, Keum-Soo,Lee, Sung-Su,Chang, Sei-Jin,Shin, Kye-Chul,Kwon, Sang-Ok,Ko, Sang-Baek,Lee, Eun-Kyoung 대한예방의학회 1996 Journal of Preventive Medicine and Public Health Vol.29 No.3
Cerebrovascular disease and coronary heart disease are the first and the fourth common causes of death among adults in Korea. Reported risk factors of these diseases are mostly alike. But some risk factors of one of these diseases may prevent other diseases. Therefore, we tried to compare and discriminate the risk factors of these diseases. We recruited four case groups and four control groups among the inpatients who were admitted to Wonju Christian Hospital from March, 1994 to November, 1995. Four control groups were matched with each of four case groups by age and sex. The number of patients in each of four case and control groups were 106 and 168 for acute myocardial infarction(AMI), 84 and 133 for subarachnoid hemorrhage(SAH), 102 and 148 for intracerebral hemorrhage(ICH), and 91 and 182 for ischemic stroke(IS) respectively. Factors whose levels were significantly higher in AMI and IS than in responding control group (RCG) were education, economic status, and triglyceride. Factors whose levels were significantly lower in hemorrhagic stroke than in RCG were age of monarch, and prothrombin time. The factor whose level was higher in AMI than ill RCG was uric acid. The factor whose level was higher in AMI, ICH, and SAM than in RCG was blood sugar. Factors whose levels were significantly higher in all the case groups than in RCG were earlobe crease, Quetelet index, white blood cell count, hemoglobin, hematocrit, and total cholesterol. The list of risk factors were somewhat different among the four diseases, though none of the risk factors to the one disease except prothrombin time acted as a preventive factor to the other diseases. The percent of grouped cases correctly classified was higher in the discrimination of ischemic diseases(AMI and IS) from hemorrhagic diseases(SAM and ICH) than in the discrimination of cerebrovascular disease from AMI. The factors concerned in the discrimination of ischemic diseases from hemorrhagic diseases were prothrombin time, earlobe crease, gender, age, uric acid, education, albumin, hemoglobin, the history of taking steroid, total cholesterol, and hematocrit according to the selection order through forward selection.
서정기(Jeong Kee Seo),박금수(Keum Soo Park),홍의수(Eui Soo Hong),김대혁(Dae Hyeok Kim),이효정(Hyo Jung Lee),조성욱(Seong Wook Cho),권준(Jun Kwan),이우형(Woo Hyung Lee) 대한내과학회 1999 대한내과학회지 Vol.56 No.6
N/A Objectives : Adaptive arterial remodeling (AAR) is a process to maintain luminal patency despite atherosclerotic plaque accumulation, whereas some of the lesions undergo a negative remodeling (vessel shrinkage), namely inadequate arterial remodeling (IAR). Histopathologic and intravascular ultrasound (IVUS) studies have shown lumen compromise is delayed until the atherosclerotic lesion occupies more than an estimated 40% to 50% of the potential area within the internal elastic lamina and proposed contributors to lumen compromise are medial and adventitial damage, superficial calcification, apoptosis. However the precise mechanisms and factors leading to these two vascular remodeling patterns are still unclear. The aim of this study is to investigate the effect of plaque accumulation on compensatory dilatation in arterial remodeling and their relationship according to their remodeling patterns. Methods : Preinterventional intravascular ultrasound images of 56 focal, de novo native and nonosteal lesions on coronary angiography were obtained. Cross sectional area of external elastic membrane (LEEM), Minimal lumen (MLA) and plaque plus media (P&M; P&M=EEM- MLA) in the target lesions were measured. Cross sectional area of external elastic membrane (REEM) and lumen (RLA) in proximal reference segments were measured. The lesions were divided into two groups according to their remodeling patterns ; adequate arterial remodeling (LEEM/REEM>0.78) and inadequate arterial remodeling (LEEM/REEM≤0.78). Results : 1) Forty-three patients (34 men, 9 women; mean age 58±11 years) who had not undergone previous coronary intervention were studied. 2) Adaptive arterial remodeling was observed in 47 (84%) of 56 lesions and inadequate arterial remodeling in 9 (16%). 3) No significant difference of clinical diagnosis, risk factors including hypertension, diabetes mellitus, smoking and lipid profiles was found between AAR and IAR group. 4) P&M/RLA of AAR was significantly higher than that of IAR (1.21±0.41 vs 0.91±0.23; p<0.001), whereas reference area stenosis (r-AST%) of AAR was significantly lower than that of IAR (59.8±23.0 vs 80.1±9.5; p<0.001). 5) In AAR group, P&M/RLA showed more significant correlation with LEEM/REEM (r=0.66, p<0.001) than r-AST% (r=0.36, p<0.05). 6) In IAR group, P&M/RLA showed significant correlation with r-AST% (r=0.79, p<0.05) but no correlation with LEEM/REEM (r=0.07, p>0.05). Conclusion : In adaptive arterial remodeling, the amount of plaque accumulation seems to be an important determinant of compensatory arterial dilatation and contribute weakly to stenosis severity. On the contrary, in inadequate arterial remodeling, it seems to contribute greatly to stenosis severity.
선경,김정택,김광호,김현태,권준,박금수,이우형,이춘수,구마테 무네타카,Sun, Kyung,Kim, Jung-Taek,Kim, Kwang-Ho,Kim, Hyun-Tae,Kwom, Joon,Park, Keum-Soo,Lee, Woo-Hyong,Lee, Choon-Soo,Kumate, Munetaka 대한흉부심장혈관외과학회 1998 Journal of Chest Surgery (J Chest Surg) Vol.31 No.3
68세된 고령의 여자 환자에서 폐고혈압과 동맥관 및 주변 대동맥의 석회화 병변이 동반된 동맥관개존증이 발견되어 Porstmann 술식을 이용해 성공적으로 폐쇄시켰다. 저자 등은 Rashkind 술식이 부적당하거나 실패한 일부 경우에서 Porstmann 술식이 개흉술을 대치할 수 있는 경침습 외과적 도관 폐쇄술로서 의의가 있다고 본다. Of several techniques for closure of the patent ductus arteriosus, the less invasive surgical ranscatheter closure without thoracotomy(the Porstmann's procedure) may have a place between the Rashkind procedure and thoracotomy. We describe here a 68 year old woman with calcified patent ductus arteriosus which was successfully closed by the Porstmann's procedure.