PBDG와 PBLG의 전기특성에 관한 연구

송진원,김병근,이경섭 東新大學校 2002 論文集 Vol.12 No.-

In this paper, detected displacement current using PBLG and PBDG, position and observed the electrical characteristics to each 1, 3, 5, 7, 9 layers by LB method. Maximum value of change ratio of displacement current by the detected speed and temperature appeared almost lineally, could confirm that it are in comparison relation each other speed·temperature and displacement current. In processing of a device manufacture, we can see the process is good from the change of a surface pressure for organic thin films and transfer ratio of area per molecule. The structure of manufactured device is MIM. Also, we then examined of the MIM device by means of Ⅰ-Ⅴ. The Ⅰ-Ⅴ characteristic of the device is measured from 0 to + 2[Ⅴ]. The insulation property of a thin film is better as the distance between electrodes is larger.

비만을 동반한 위암 환자에서 두 병을 같이 수술 치료한 경험(증례)

최경현,윤기영,문형환,신연명,서경원,안수미,송윤미,석정희,정경연,이은하 고신대학교의과대학 2008 고신대학교 의과대학 학술지 Vol.23 No.3

Obesity is growing problem in Korea. We had a case of bariatric surgery during gastric cancer operation. Patient was 29 year old Korean lady with early gastric cancer located in the lesser curvature side of the middle 1/3 of the stomach. Her body weight was 89 kg, height 163 cm, and thus body mass index was 33.5 kg/m2. Preoperative blood pressure was 130/90 mmHg, hemoglobin 12.9 g/dL, total lymphocyte count 3,280/mL, serum albumin 4.3 g/dL, CEA 1.1 ng/mL, CA 19-9 9.1 ng/mL, and alpha fetoprotein 2 ng/mL. Another associated disease was right thyroid follicular neoplasm. The chest X-ray was normal. After IM injection of 2,500 units of heparin 30 minutes before the induction of general anesthesia, she received curative subtotal gastrectomy and Roux en Y gastrojejunostomy when a malabsorption loop of 120 cm jejunum was incorporated between the Treitz ligament and the end to side jejuno-jejunostmy site at May 29th 2006. Her postoperative course was uneventful except a minor wound seroma and the elevations of serum amylase(up to 4 folds) and lipase(up to 2 folds). She lost her body weight 9 kg in 5th, 21 kg in 7th, and 27 kg in 10th postoperative months to became 61.5 kg. On follow up exams in July 2008, she gained 4 kg to overcome her weakness and fatigue. From the above result, the incorporation of a malabsorption loop during reconstruction phase of gastric cancer operation was a good option for obese gastric cancer patients especially in cases of early gastric cancer.

한말 안경수의 정치활동과 대외인식

송경원 한국사상사학회 1997 韓國思想史學 Vol.8 No.1

蛇行現象과 流路移動에 關한 硏究

宋在偶,丁榕泰,白景元 弘益大學校 1990 弘大論叢 Vol.22 No.2

The results of an analysis of channel characteristics for a river basin were as follows; 1) The concave bank for the downstream of once or twice of river width from the apex of curvature should be destroyed more than enlargement channel width by flood. 2) The bedslope increased because of cut-off and all the more flux flowed if the cross-section area was constant. The results of cut-off decreased the flood-flow-level at the upstream, but the bed was eroded and tended to be deposited at the downstream. 3) Based on the momentum equation for flow in a stream bend, the force per unit area which the flow exerts on the outer of a bend was expressed by the curvature ratio which was in proportion to flow characteristics, sediment characteristics, and bend geometry. 4) Considering the construction of riverbank, the average channel migration ratio had been 4.687m/yr from 1953 to 1967 and 10.485m/yr from 1968 to 1981. Generally a distribution of bed material showed that the grain size decreasd with a flow going downstream, exept nearly after the Pal-Dang Dam, the grain size bigger in 1981 than 1967 because the Dam cut the supply of sediment, so small grains were carried away by a flows.

推計學的 模型에 의한 河川流量의 模擬發生

宋在偶,白景元 弘益大學校 1986 弘大論叢 Vol.18 No.2

The purpose of synthetic generation of river flows based on the stochastic theory is to make possible a better design of water resources systems by generation of long term data which have the same statistical characteristics of historical discharge data. This study included the generation of monthly and annual discharges by Thomas- Fiering model and Monte Carlo model, the comparative study with the historical data and genreated data, and the change of monthly generated discharges into annual discharges. Discharges at Yeoju were characterized by log-normal distribution, and the annual discharges were identified as a time series of persistence absent. The statistical characteristics of the historical data were maintained in the generated data, but the small differences between historical and generated data were produced by the errors in the random number generation. And fit distribution type of the annual discharges could be seen from the annual discharges obtained from the generated monthly discharges.

서울시내에 거주하는 13세-15세 청소년들의 부정교합에 관한 역학적 연구

송경원,김진태 大韓小兒齒科學會 1984 大韓小兒齒科學會誌 Vol.11 No.1

Childrens between the ages of 13 and 15 years, living in Seoul, were examined in order to determine the prevalence and severity of malocclusion in the permanent dentition. This survey encompassed 981 children and an individual chart was prepared for each subject recording an original HMAR score and classification of occlusion according to Angle. Also, subjective evaluation of "treatment needs" was carried out in 581 children. The results were as follows: 1. Of the 981 children in this survey, 12.1 percent showed excellent occlusion. (0 point) 2. The 14 percent of the children who had a score of 24 and above all appeared to belong to the "treatment highly desirable" or "treatment mandatory" category. 3. The incorporation of SAR (Supplementary Assessment Record) into the HMAR can provide more sensitive method for evaluating severity of malocclusion. 4. According to Angle's classification 77.4 percent of all malocclusion belonged to Class Ⅰ, 1.3 percent to Class Ⅱ, Division 1, 0.9 percent to Class Ⅱ, Division 2, and 11.3 percent to Class Ⅲ. 5. The mean HMAR score for Class Ⅰwas significantly lower than for either Class Ⅱ, Division 1 or Class Ⅲ. (P<0.05) 6. A close relationship was found between the degree of "treatment needs" and the value obtained by the HMAR scoring. (chi-square test, p<0.05) The differences between the mean HMAR scores of the various subjectively defined categories were statistically significant. (p<0.001)

사람 태아간의 산호성 과립백혈구형성에서 산호성 과립형성에 대한 미세구조 연구

송재섭,김경용,이원복,김동창 중앙대학교 의과대학 의과학연구소 1992 中央醫大誌 Vol.17 No.4

The developmental processes of eosinophilic granule formation were ultrastructural investigation of eosinophilic granulopoiesis in 15 cases of human fetal livers from 8 to 34 weeks of gestation. 1) Numerous vesicles, microgranules and small agranular and granular vacuoles were distributed around the distended Golgi apparatus in myeloblast and eosinophilic promyelocyte. 2) Granular matrix of vacuoles contained small granular vacuoles, serveral vesicles and mutilamellar structures. The granular substance exhibited higher electron density than that of cystic rough endoplasmic reticulum(RER) and was similar partly to that of immature eosinophilic granules. 3) Distended cystic RER was fused to produce matrix of maturing granules with granular vacuoles and immature eosinophilic granules. 4) Immature eosinophilic granule which began to be produced in eosinophilic promyelocyte, had myelin sheath-like structure and debris of vesicles and granular vacuoles and those disappeared immediately. The charicteristic crystalloid inclusions began to develop in immature eosinophilic granule of myelocyte. In summary, it is suggested that vesicles and granular vacuoles as well as RER in the myelocyte and promyelcyte are participating in the formation of immature eosinophilic granules which become mature with the appearance of charicteristic crystalloid inclusion

두피의 악성 종양의 외과적 치료에 대한 연구

민경원,박철규,송홍식 大韓成形外科學會 1991 Archives of Plastic Surgery Vol.18 No.2

Primary malignant tumors of the scalp may arise from any elements which comprise epithelial, glandular or somatic tissue. Generally, these malignant timors have unique characteristics different from that of other skin cancers found elsewhere. Because of the hairs, detection is often delayed and because of so many unannoying benign skin lesions in the scalp, patients occasionally do not ask for early medical care. However, if appropriate treatment is deferred, tumors may fatally invade adjacent calvarial bone or underlying brain, and reconstruction method is not simple which requires intact bony vault and hairy skin. Authors have experienced 7 cases of basal cell carcinoma, 12 cases of squamous cell carcinoma, 4 cases of malignant melanoma. Except inoperable one case that tumor invades occipital lobe and sagittal sinus, we have performed radical excision and reconstruction which are divided by the following groups according to the depth of invasion. In Group A, radical excision was done on the subgaleal plane and reconstruction is performed with use of local flaps. In Group B, outer table of calvarial bone was removed and scalp was reconstructed with local flaps and skin graft. In Group C, full layer of calvarial bone was removed and cranium was reconstructed with autogenous calvarial bone or rib bone and scalp was reconstructed with local flaps or myocutaneous flap and skin graft. In Group D, neurosurgical excision was added. We have perfomed above surgical treatment in 22 cases with satisfactory results and we will present our cases with brief review of literatures.

허혈성심질환 환자에 있어 혈액 응고상태의 비교

이미경,송경은,이원길,김재식,박의현,전재은 경북대학교 병원 1997 경북대학교병원의학연구소논문집 Vol.1 No.1

연구배경: 최근에 지혈응고 및 섬유소 용해기능의 손상이 허혈성 심질환의 병인론에 중요한 역할을 한다고 알려져 왔다. 이에 저자들은 허혈성심질환군과 정상대조군에서 PT, aPTT, 섬유소원, α2-antiplasimin, tPA, PAI-I, AT Ⅲ, protein C, XL-FDP를 측정하여, 이들이 허혈성심질환의 발병에 미치는 영향 및 중요성에 연구하고, 혈전용해제 투여전과 투여후의 결과를 비교 분석하여 이들의 검사지표로서의 임상적인 유용성에 관하여 알아보고자 하였다. 방법: 39예의 정상대조군과 급성 심근경색 및 협심증으로 진단된 40예의 환자군에서 platelet-poor-plasma를 얻어 PT, aPTT, 섬유소원은 ELECTRA 1000C(Medical laboratory automation, Inc., USA)를 이용하여 측정하였고, α2-antiplasmin는 색소법으로 SPECT-ROLYSER α2-antiplasmin(Biopool AB, Canada)kit를, tPA와 PAI-1은 면역효소법으로, Protein C는 응고법으로 Bioclot?? Protein C(Biopool AB, Canada) kit를 사용하여 측정하였다. XL-FDP는 라텍스응집법으로 DIMERTESTR Ⅱ Latex Kit(AGEN Biomedical Limited, Australia)를 이용하여 측정하였다. 결과: 환자군과 정상대조군의 비교에서 에서 PT, aPTT, 섬유소원, PAI-1 및 ATⅢ는 두 군간에 통계학적으로 유의한 차의를 나타내었고 환자군에서는 62.5%에 해당하는 25예에서 증가된 소견을 보여 주었다. 환자군에서 혈전용해제 투여전과 투여후의 결과비교에서 PT와 섬유소원에서 유의한 차이가 있었으며, α2-antiplasmin, PAI-1 및 protein C는 유의하지는 않았지만 감소하는 경향을 나타내었다. 혈전용해제 투여후 1 시간결과를 대조군과 비교해 볼 때 PT와 tPA는 유의하게 증가하였고 섬유소원과 ATⅢ는 의의있게 감소하였다. 7일째 결과는 모든 지수에서 정상대조군과 유의한 차이가 없었다. 결론: PT, 섬유소원의 검사가 허혈성 심질환의 진단과 경과관찰에 도움을 줄 수 있으며, tPA, PAI-1, ATⅢ등과 같이 관찰함으로서 진단뿐만 아니라 예후와 재발위험성에 대한 예측 등 임상적으로 중요한 검사지표로서의 가능성을 나타냄을 알 수 있었다. Background: Many studies have shown that thrombus formation has important role in the pathogenesis of ischemic heart disease(IHD) and impaired fibrinolysis is associated with an increased risk of myocardial infacrtion. Forty patients with IHD and 39 normal controls were studied about blood coagulation, fibrinolytic, inhibitory proteins to evaluate their usefulness in diagnosing, predicting prognosis and monitoring after thrombolytic therapy in IHD. Method: Platelet-poor-plasma were obtained from the 3.8% trisodium citrate treated blood and prothrombin time(PT), activated partial thromboplastin time(aPTT), firbrinogen, α2-antiplasmin, tPA,PAI-1, antithrombin Ⅲ(ATⅢ), protein C. crosslinked fibrin degradation products(XL-FDP) were measured by appropriate functional or immunological assays. Results: The IHD group showed significant increases in PT,aPTT, fibrinogen, PAI-I and XL-FDP and significant reduction in AT Ⅲ concentration. No significant changes were observed between myocardial infarction and angina pectoris subgroups in the IHD. After thrombolytic therapy, PT and fibrinogen showed significant changes. In comparsion with normal controls, post 1 hour results showed significant changes in PT, fibrinogen, tPA, ATⅢ but no significant changes in post 7 days results. Conclusion: Our findings suggest that measurements of PT and fibrinogen are helpful for diagnosis in patients with IHD. And combined with tPA, PAI-1 and AT Ⅲ, they may be useful test for monitoring after thrombolytic therapy, predicting prognosis and risk of recurrence in IHD patients.

河川水質의 推計學的 變動性에 關한 硏究

白景元,宋在偶 弘益大學校 科學技術硏究所 1994 科學技術硏究論文集 Vol.5 No.-

The stochastic structures of water quality time series were examined. These time series include daily observations in streamflow, water temperature, BOD, and dissolved oxygen deficit. Autoregressive integrated moving average(ARIMA) models were used to describe the random components of these time series. It was found that except for the BOD the Arima models provide very satisfactory results.