소아 확장성 심근증의 임상적 고찰

이성환,김준식,박근수,김명성,권태찬,김천수,이상락 啓明大學校 醫科大學 1996 계명의대학술지 Vol.15 No.1

A Clinical assessment of the 25 patients with dilated cardiomyopathy who were admitted to the Department of Pediatrics, Keimyung University Dong San Hospital from January, 1982 to June, 1993 was performed. The result were as follows: 1) Among 25 patients with dilated cardiomyopathy. 8(32%) were younger than 1 year of age at the time of admission. 2) Adriamycin toxicity was the only encountered etiologic factor in 1 patient. 3) On admission, hepatomegaly and tachycardia were noted in almost all patients. 4) The Chest X-rays showed cardiomegalies in all 25 patients, pulmonary vein congestions in 15(60%) and pleural effusion in 2(8%). 5) The electrocardiography showed left ventricular hypertrophy in 72% and supraventricular tachycardia in 32%. 6) The echocardiographic examination showed left ventricular dilatations in all patients and left atrial dilatations in 20(80%). 7) Of 18 patients who had followed mean period of 2.9 years, 10 patients died within 9 months after the diagnosis.

민간조사의 수요증가와 퇴직경찰관 활용방안

이주락,조성구 치안정책연구소 2011 치안정책연구 Vol.25 No.2

Scholars in the related academic fields are discussing the official introduction of private investigation in South Korea. One of the main topics of the discussion is utilization of retired police officers as private investigators. This idea comes from the fact that the two professions are closely related, and it will likely to reap more benefits than hiring laymen. Along with the positive expectation, there are also concerns about the absence of judicial power for private investigators as well as the difficulties that the retired officers will have in getting hired by customer service-oriented for-profit investigation agencies without completing additional special training. For these reasons, I asked the participants of the research, police officers, for their opinions on the causes of the rising demand for private investigation services and on the anticipated problems in some of the retired officers getting rehired as private investigators and the necessary training requirement to resolve this issue. Qualitative research methods, Group and Internet interviews, were used and the collected data was analyzed by using the NVivo 8 which is a non-quantity data analysis program. The result disclosed that the most frequently mentioned causes of the rising demand for private investigation services were the limitation of the police in maintaining public order, performance-based evaluation and personnel management system of the police, and increased efforts among private enterprises to protect themselves. Also, the participants stated that the major problem in hiring retired police men as private investigators would be the difference between the investigative work of the two professions; the two main areas of the contrast were the related legislation and the level of civil cooperation. Other arguments included the lack of service-oriented attitude and aging of the retired police officers. Moreover, diverse areas of training-customer service, methods of performing private investigation services, management of private investigation agencies, and related legislation-were considered crucial for the retiring police officers to be re-employed in the field of private investigation. 현재 우리나라에서는 이미 많은 유사민간조사업체들이 공공연하게 민간조사 업무를 수행하고 있고, 관련 학계에서도 민간조사의 도입에 대한 다양한 논의들이 행해지고 있다. 그런데 이러한 논의의 핵심 중 하나가 바로 퇴직 경찰관을 민간조사원으로 활용하는 방안에 관한 것이다. 경찰은 업무적으로 민간조사와 밀접한 관련이 있으므로 경찰관이 퇴직 후 민간조사원으로 활동하는 것은 일반인이 민간조사원이 되는 것에 비해 여러 면에서 유리하다. 그러나 민간조사가 영리를 목적으로 한 서비스업이라는 점에서 퇴직 경찰관이 민간조사원으로 특별한 교육 없이 재취업하는 데에는 여러 가지 문제점이 뒤따를 수 있다. 그러므로 이러한 문제의식을 바탕으로 이 연구에서는 일선 경찰관들에게 민간조사의 필요성 증대 원인은 무엇이며, 그들이 퇴직 후 민간조사원으로 재취업하는 데에는 어떤 문제점이 있다고 예상하는지, 그리고 이를 해결하기 위해 필요한 교육은 무엇인지에 대하여 질문하였다. 연구를 위하여 질적 연구방법인 심층면담기법을 사용하였고 수집된 자료는 비 수량적 자료 분석 프로그램인 NVivo 8을 활용하여 분석하였다. 연구결과, 첫째, 민간조사 수요의 증가원인으로 많이 언급된 것은 경찰 치안 능력의 한계, 성과주의 평가와 인사 시스템, 그리고 민간기업의 자구 노력의 증가였다. 둘째, 퇴직 경찰관의 민간조사원 활용의 문제점으로는 경찰의 수사와 민간조사의 차이, 퇴직 경찰관의 서비스 의식 부족, 퇴직 경찰관의 노령화가 자주 언급되었다. 셋째, 퇴직 경찰관이 민간조사업에 재취업하기 위해 필요하다고 생각하는 교육 중 가장 많이 언급된 것은 서비스 교육, 민간조사업무 수행기법 교육, 민간조사업체 경영교육, 그리고 민간조사업 관련법률 교육이었다.

유도전동기 벡터제어 시스템을 이용한 속응제어에 관한 연구

황락훈,나승권,이춘상 세명대학교 2000 世明論叢 Vol.8 No.-

In this paper, the flux vector should be precisely estimated. But, in the speed sensorless control, it is difficult to estimate the flux due to the influence of leakage reactance drops. Therefore, the proper flux estimation method is required. Also, considering with explanation an influence of speed estimation mechanism depend on error about the second resistance size established, it estimates the deviation of the second resistance establishment and exhibits a compensation method, what is more, it designs a reparation program using the fuzzy algorithm and testifies the result with the computer simulation. In consequence, it makes a good result for more powerful vector control system about the outside trouble. In this paper, Induction motor speed and torque are usually controlled by the following three ways : slip frequency control, vector control and torque constant control. But there have been little analyses on the transient characteristics in these methods. Furthermore, since the control system is complex and/or has much problems in its implementation and transient characteristics, it is relatively difficult to apply these methods to the rapid response control for the precision machinery in these days.

신뢰성에 기초한 PC빔교의 내하력 평가

백용락,정인수,신재철,이상국 忠南大學校 産業技術硏究所 1996 산업기술연구논문집 Vol.11 No.2

In most countries road bridges are subjected to increasingly heavy freight traffic with a number of exceptional truck loads. This has made it necessary to devote particular attention to the evaluation of safety and load-carrying capacity of bridges, which is a vital process in the decision-making for maintenance, repair, strengthening, or even replacement of existing road bridges. However, most countries including Korea do not have a comprehensive rating system or rating code. Furthermore, the current methods of rating of road bridges are dependent on the conventional design concepts and the safety parameters of the current bridge design codes. A practical reliability model for the safety assessment and rating of existing PC beam bridges are developed by explicitly incorporating the degree of deterioration and damages based on available inspection or field test data. AFOSM methods are used for the reliability analysis of the proposed models. The proposed reliability model and methods are applied to the safety assessment of existing PC beam bridges in Korea.

고리원자력발전소 주변의 식생과 식물현존량 추정

김성종,이호준,김인택,김창호,정홍락 建國大學校基礎科學硏究所 1995 理學論集 Vol.20 No.-

고리원자력발전소 주변의 식생에 대한 식물사회학적 조사를 실시하였으며, 순1차생산력과 식물현존량을 추정하였다. 또한 상관에 의한 현존식생도 및 녹지자연도를 작성하였다. 종조성표에 의한 식물군락은 소나무군락, 곰솔군락, 서어나무-굴참나무군락, 아까시나무군락으로 구분되었다. 소나무군락은 아교목층(평균식피율 35%)이 빈약하였으며, 서어나무-굴참나무군락은 비교적 안정된 계층구조를 이루고 있었다. 전체적으로 교목층에서 소나무, 곰솔, 아교목층에서 사방오리, 졸참나무, 저목층에서 졸참나무, 사스레피나무, 초본층에서 산거울, 주름조개풀 등의 피복지수가 높았다. 삼림토양의 pH는 4.30~4.85, 유기물함량은 6.04~9.40%의 범위였다. 현존식생도에 의한 분포비율은 곰솔군락(31.4%)이 가장 높았으며, 평균녹지자연도는 5.4였다. Montreal model에 의한 순1차생산력은 1555.2g/㎡/yr, 식물현존량은 단위면적당16,982,21ton/k㎡으로 추정되었다. The forest vegetation and estimation of phytomass and net primary production in the vicinity of Kori Atomic Power Plant was analyzed on the basis of the phytosociological data. Depending on physiognomy, actual vegetation map and the degree of green naturality(DGN) was also drawn in the of 1:50,000. According to Z-M method, the forest vegetation was classified into four communities, which include Pinus densiflora, Pinus thunbergii, Carpinus laxiflora-Quercus variabilis, and Robinia pseudo-acacia communities. The Pinus densiflora community was most poorly covered in tree-2 layer. The Carpinus laxiflora-Quercus variabilis community was relatively stable in the stratum structure. It was generally shown that Pinus densiflora and Pinus thunbergii in tree-1 layer, Alnus firma and Quercus serrata in tree-2 layer, Quercus serrata and Eurya japonica in shrub layer, and Carex humilis and Oplismenus undulatifolius in herb layer had high coverage index. The pHs and contents of organic matter of the forest soil collected in each sites was in the range of 4.30 to 4.85 and 6.04% to 9.40% in average in the communities. The Pinus thunbergii community showed the highest distribution rate(31.4%) in the actual vegetation map. The average DGN was approximately 5.4. Net primary production and phytomass per unit area obtained by Montreal model were estimated to be 1555.2g/㎡/yr and 16,982.21ton/k㎡, respectively.

Ti/p-Si 太陽電池의 製作과 特性

羅炳旭,李相潤,孫鍊圭,金東洛 慶北大學校 物理化學硏究所 1984 硏究論文集 Vol.5 No.-

Titanium thin film was deposited on the chemically etched (100) surface of silicon single crystal by the vacuum evaporation. The interfacial oxide was grown by ramp heating. The Ti/p-Si solar cells have shown good rectification properties with the 0.78V built-in potential and the 20㎂/㎠ reverse saturation current density in dark. The best cell have 0.58V open circuit voltage, 38.0 ㎃/㎠ short circuit photocurrent density, 0.64 fill factor and 13.9% energy conversion efficiency under 100㎽/㎠ tungsten halogen lamp irradiation. Therefore, this solar cell is a very promising one, but the life testing is not performed yet in our laboratory.

放射線 檢出機의 國産化開發硏究 : Gas-flow型 比例計數管 Gas-flow type Proportional Countre

姜榮浩,李相潤,金東洛 慶北大學校 産業開發硏究所 1978 硏究報告 Vol.6 No.-

In proportional counters the amount of ionization per discharge is a function of the primary ionization as well as of the tube characteristics and operating conditions. This paper described a construction for gas-flow proportional counter and pre-amp with use of domestic propane gas. Using propane gas in this gas-flow counter, the slope of plateau was 2.2%/100V, plateau regions were 4100∼4500V, operating voltage was 4300V and counting efficiency was 11.2%. We found that the possibility of constructing an efficient transisterlized gas-flow type proportional counter using inexpensive domestic propane gas.

Ti/p-Si 太陽電池의 製作과 特性

羅炳旭,李相潤,孫鍊圭,金東洛 慶北大學校 自然科學大學 1982 自然科學論文集 Vol.1 No.-

Titanium thin film was deposited on the chemically etched (100) surface of silicon single crystal by the vacuum evaporation. The interfacial oxide was grown by ramp heating. The Ti/p-Si solar cells have shown good rectification properties with the 0.78V built-in potential and the 20μA/㎠ reverse saturation current density in dark. The best cell have 0.58V open circuit voltage, 38.0 mA/㎠ short circuit photocurrent density, 0.64 fill factor and 13.9% energy conversion efficiency under 100mW/㎠ tungsten halogen lamp irradiation. Therefore, this solar cell is very promising one, but the life testing is not performed yet in our laboratory.

Plenary Session 2 : PS-2-1 ; Outcomes of hepatitis B virus recurrence after liver transplantation: a multicenter analysis in Korea

( Hee Yeon Kim ),( Jong Young Choi ),( Dong Goo Kim ),( Myoung Soo Kim ),( Soon Il Kim ),( Shin Hwang ),( Sung Gyu Lee ),( Kwang Woong Lee ),( Kyung Suk Suh ),( Young Seok Han ),( Dong Lak Choi ),( Se 대한간학회 2012 춘·추계 학술대회 (KASL) Vol.2012 No.-

Background: The outcome of hepatitis B virus (HBV) infection after liver transplantation (LT) was improved by hepatitis B immunoglobulin (HBIG) and nucles(t)ide analogue (NUA). However, HBV recurrence after LT is critical because the recurrence is occasionally accompanied by a progressive destruction of graft and poor survival. The aims of this study were to investigate the significance HBV recurrence and identity factors associated with HBV recurrence. Methods: From October 1999 to February 2011, a total of 2684 consecutive LT recipients who underwent HBV-associated LT were retrospectively enrolled from 7 transplantation centers in Korea. Results: Prophylaxis regimens were HBIG monotherapy (67.7%) or a combination of HBIG with NUA (22.3%). The recurrence rate of HBV was 6.1% (164 recipients) during mean follow-up duration of 10.9 years. The median time from transplantation to recurrence was 2.1 years (0.1-7.9 years). Of the 1,071 patients with hepatocellular carcinoma (HCC) prior to LT, 155 patients (14.5%) had HCC recurrence after transplantation, and 48 patients (31.0%) had HBV recurrence. Of the 48 patients with recurrence of both HBV and HCC, 25 patients (52.1%) experienced HBV recurrence after HCC recurrence. In the multivariate analysis, pretransplant HCC, pretransplant HBV DNA above 5.5 log copies/mL was independent clinical factors influencing HBV recurrence after LT. The mortality rate among the recipients with HBV recurrence was 34.1% (56 recipients). Mean overall survival was 6.4 years in the HBV-recurrence group and 9.9 years in the HBV-nonrecurrence group (p<0.001). HBV recurrence was not an independent prognostic factor for overall survival. HCC recurrence was the most important factor for overall survival. Conclusions: The overall outcome of LT in HBV-related liver disease was excellent with the current prophylaxis regimen Choon Hyuck David Kwon,8 Suk-Koo Lee8 Pretransplant HBV DNA and HCC were important factors for HBV recurrence. HBV recurrence after LT did not significantly influence on the overall survival without combining of HCC recurrence.

Effect of DA-9701, a Novel Prokinetic Agent, on Post-operative Ileus in Rats

( Sang Pyo Lee ),( Oh Young Lee ),( Kang Nyeong Lee ),( Hang Lak Lee ),( Ho Soon Choi ),( Byung Chul Yoon ),( Dae Won Jun ) 대한소화기기능성질환·운동학회(구 대한소화관운동학회) 2017 Journal of Neurogastroenterology and Motility (JNM Vol.23 No.1

Background/Aims Post-operative ileus (POI) is a common complication of abdominal surgery. DA-9701, an extract of Pharbitis Semen and Corydalis Tuber, is a new prokinetic agent that also alleviates visceral pain. The aim of this study was to investigate whether DA-9701 can ameliorate POI in rats. Methods A total of 32 rats were divided into 4 groups: no surgery/no medication (NSNM), no surgery/medication (NSM), surgery/no medication (SNM), and surgery/medication (SM). Gastrointestinal transit (GIT), which is assessed by migration of charcoal, and cumulative stool weight were measured at 24 hours after surgery. Results GIT was significantly more delayed in the SNM group than in the other groups (SNM vs NSNM, P < 0.001; SNM vs NSM, P < 0.001; SNM vs SM, P = 0.005). Cumulative stool weight in that group was also lower than in the no surgery groups (SNM vs NSNM, P = 0.007; SNM vs NSM, P = 0.033), and there was no significant difference between the SM group and the no surgery groups (SM vs NSM, P = 0.703; SM vs NSNM, P = 0.347). Conclusion DA-9701 can ameliorate POI by reducing delayed GIT and improving defecation in a rat model of POI. (J Neurogastroenterol Motil 2017;23:109-116)