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오연희,이현경,이원재,이성우,박수성,윤혜원,임문환,심재철,김용탁,김성숙,김정란 동국대학교 경주대학 1993 東國論集 Vol.12 No.-
Acute torsion of the ovary and ovarian mass is a recognized surgical emergency, but rarely has the diagnosis been made preoperatively on the basis of imaging studies. The sonographic findings in 14 cases of surgically proven torsion of the ovary and ovarian mass are described. Mostly cystic ovarian mass, engorged vessel, dilated uterine tube, beak-like echo(torsion site), smooth mass wall thickening an free-fluid collection in cul-de-sac are described. More significant in terms of specificity were the demonstration in 6 cases(42.9%) of the smooth mass wall thickening and in 8 cases(57.1%) of a free fluid in the cul-de-sac. We report the sonographic findings of ovary and ovarian mass torsion that may suggest the preoperative diagnosis of this condition.
誘導 電動機의 電源 周波數 可變에 의한 最適 制御에 관한 硏究
李五杰,李浚析,鄭基和,禹靖仁 동아대학교 공과대학 부설 한국자원개발연구소 1990 硏究報告 Vol.14 No.1
In general, unstable phenomena of induction motor are oftenly appeared at low speed and light load. This paper discribes eigenic unstable regions of I.M. itself by computer simulations and the results are Compared to experimental ones. And also the Optimal design parameters of I.M. which the un-stable region can be minimized are determined.
최근 9년간 신경정신과에 입원한 환자에 대한 임상적 고찰(1972∼1980년)
이정호,안일남,오석환,정영조,최영민,원장섭,김영훈,하혜경,이승탁,이영주 인제대학교 1983 仁濟醫學 Vol.4 No.2
정신질환 환자들에 대한 정확한 생태를 파악함은 정신 건강과 치료 대책을 세우는데 중요하다. 이에 본 저자들은 1972년부터 1980떤 사이에 인제의대 부속 서울백병원 신경정신과에 입원하여 치료 받았던 환자들에 대한 제반 요인들을 분석 검토하였다. Clinical charactristics of neuropsychiatric inpatients were evaluated and discussed with special referrence to their diagnostic distribution. All discharged cases from neuropsychatric ward of Seoul Paik Hospital during nine years from 1972 to 1980 were 2863. Among them 813 cases were discarded from this study because their clinical charts were vague in description of failed to find out. The materials of this study were extracted from 2050 discharged cases. Total number of cases of inpatients were gradually increasing by each year from 1972 to 1980. Psychoneurosis was diagnosed in 45.2%, schizophrenia in 26.9%, organic brain syndrome in 8.9%, major affective disorder in 5.5%, personality disorder in 4.8%, other psychiatric disorder in 1.5%, psychophysiologic disorder in 1.0%, mental retardation in 0.5%, paranoid state in 0.5%, and other psychosis in 0.3%. The gruop of patients, ranging in age from 21 to 40 was the highest (75.2%) in this study. Male patients were 43.9% and female patients were 56.1%. Schizophrenia leas diagnosed in 32.9%, depressive neurosis in II.3%, anxiety neurosis in 9.3%, and personality disorder in 8.1% in male patients. Hysterical neurosis was diagnosed in 25.5%, depressive neurosis in 22.2%, schizophrenia in 22.2%, and anxiety neurosis in 7.0% in female patients. The authors evaluated the route of admission of patients. Sixty-eight point three percent of total studied cases were admitted through outpatient department, 20.9% of cases were admitted through emergeney room, and 8.2% of cases were transfered from other department or hospital. Among patients who were admitted to psychiatric wards through emergency room and transferred from other department or hospital, psychoneurosis was the hightest diagnostic group in rate. Most of patients who were transferred from other department or hospital were from Internal Medical Department. There were no relationship between seasonality of admission and diagnostic group in this study. readmission rate of total studied patients in neuropsychiatric department of Seoul Paik Hospital was 30%. The readmission rate of personality disorder, mental retardation, schizophrenia, and major affective disorder were relatively high. The cases who were discharged against medical advice were 441. Among them misunderstanding about psychiatric treatment was predominent. Twenty seven percent of patients had physical illness at or during admission. The patients who were diagnosd as psychophysiological disorder had physical illness in 42.8%, 35.4% in personality disorder, 33.9% in major affective disorder, and 24.3% in schizophrenia. About nine percent of total studied cases had the history of attempted suicide. Major affective disorder, Personality disorder, Deressive neurosis, and Other Psychosis showed high incidence of history of attempted suicide prior to admission.
쌍선형 유도기 모델을 위한 최적 안정화 제어기 설계에 관한 연구
李泰基,李五杰,禹靖仁,李浚柝 東義大學校産業技術開發硏究所 1992 産業技術硏究誌 Vol.6 No.-
An optimal Stabilization Technique for a bilinear induction motor model is introduced. This technique includes two parts ; the one is an stabilization control using Lyapunov Function which has the form of a sum of liner and quadratic function of the state variables, and the other is an optimalizing control using the performance index which depends on the choice of the elements of the Lyapunov matrices. Therefore, induction moter is drived with the smaller overshoot of the ones, simulation results are obtained from a digital computer.
Oh, Hyung Jung,Park, Jung Tak,Kim, Jwa-Kyung,Yoo, Dong Eun,Kim, Seung Jun,Han, Seung Hyeok,Kang, Shin-Wook,Choi, Kyu Hun,Yoo, Tae-Hyun Springer International ; Oxford University Press 2012 Nephrology, dialysis, transplantation Vol.27 No.2
<P>A potential independent association was recently demonstrated between high red blood cell distribution width (RDW) and the risk of all-cause mortality in patients with cardiovascular disease, although the mechanism remains unclear. However, there have been no reports on the relationship between RDW and mortality in acute kidney injury (AKI) patients treated with continuous renal replacement therapy (CRRT). In this study, we assessed whether RDW was associated with mortality in AKI patients on CRRT treatment in the intensive care unit (ICU).</P>
Jung Oh, Hyung,Lee, Mi Jung,Lee, Hye Sun,Park, Jung Tak,Han, Seung Hyeok,Yoo, Tae-Hyun,Kim, Yong-Lim,Kim, Yon Su,Yang, Chul Woo,Kim, Nam-Ho,Kang, Shin-Wook by Lippincott WilliamsWilkins, Inc. 2014 Medicine Vol.93 No.27
ABSTRACT: Numerous studies have demonstrated that cardiac biomarkers are significant predictors of cardiovascular (CV) and all-cause mortality in ESRD patients, but most of the studies were retrospective or included small numbers of patients, only prevalent dialysis patients, or measured 1 or 2 biomarkers. This study was to analyze the association between 3 cardiac biomarkers and mortality in incident HD patients. A prospective cohort of 864 incident HD patients was followed for 30 months. Based on the median values of baseline NT-proBNP, cTnT, and hsCRP, the patients were divided into “high” and “low” groups, and CV and all-cause mortality were compared between each group. Additionally, time-dependent ROC curves were constructed, and the NRI and IDI of the models with various biomarkers were calculated. The CV survival rates were significantly lower in the “high” NT-proBNP and cTnT groups compared to the corresponding “low” groups, while there was no significant difference in CV survival rate between the 2 hsCRP groups. However, all-cause mortality rates were significantly higher in all 3 “high” groups compared to each lower group. In multivariate analyses, only Ln NT-proBNP was found to be an independent predictor of mortality. Moreover, NT-proBNP was a more prognostic marker for mortality compared to cTnT. In conclusion, NT-proBNP is the biomarker that results in the most added prognostic value on top of traditional risk factors for CV and all-cause mortality in incident HD patients.
Oh, Hyung Jung,Nam, Bo Young,Lee, Mi Jung,Kim, Chan Ho,Koo, Hyang Mo,Doh, Fa Mee,Han, Jae Hyun,Kim, Eun Jin,Han, Ji Suk,Park, Jung Tak,Yoo, Tae-Hyun,Kang, Shin-Wook,Han, Dae-Suk,Han, Seung Hyeok International Society for Peritoneal Dialysis 2015 Peritoneal dialysis international Vol.35 No.1
<P>♦ <I>Introduction:</I> It has been reported that klotho deficiency is associated with oxidative stress and inflammation in experimental kidney disease models. Patients with endstage renal disease (ESRD) are particularly characterized by increased oxidative stress and inflammation. However, little is known about the relationship between these features and klotho in patients with ESRD.</P><P>♦ <I>Methods:</I> We conducted a single-center, cross-sectional study of 78 patients receiving peritoneal dialysis (PD). Serum concentrations of klotho, high-sensitivity C-reactive protein (hsCRP), interleukin-6 (IL-6), and 8-isoprostane were measured by enzyme-linked immunosorbent assay. To define factors independently associated with klotho, we determined Spearman’s correlation coefficients for between co-variates and conducted multiple linear regression analyses.</P><P>♦ <I>Results:</I> Patients were classified by median concentration of klotho. In patients with klotho levels > 329.6 pg/mL, serum 8-isoprostane and IL-6 levels were significantly higher than in those with klotho levels < 329.6 pg/mL. In correlation analyses, log 8-isoprostane (γ = –0.310, <I>p</I> = 0.006) and log IL-6 (γ = –0.343, <I>p</I> = 0.002) were inversely correlated with log klotho. After adjustment for age, gender, mean arterial pressure, log intact parathyroid hormone, and log IL-6, log 8-isoprostane was independently associated with log klotho (β = –0.158, <I>p</I> = 0.040). However, the significant relationship between klotho and IL-6 was not seen in an adjusted model.</P><P>♦ <I>Conclusions:</I> This study showed that circulating klotho levels were significantly associated with 8-isoprostane levels in patients undergoing PD, suggesting a potential link between klotho deficiency and enhanced oxidative stress in ESRD patients.</P>