횡문근융해증과 경한 신손상을 동반한 급성 A형 간염 1예

조규민,김창욱,성현진,허준,전부석,이종환,심은희,이석종,이창돈 영남대학교 의과대학 2012 Yeungnam University Journal of Medicine Vol.29 No.1

A 48-year-old male visited the emergency room of the authors’ hospital due to nausea, vomiting, and myalgia for four days. Acute hepatitis A was identified from the serologic marker of the hepatitis A virus. Mild elevation of the serum creatinine and creatinine phosphokinase(CPK) suggested rhabomyolysis, which was confirmed with the serum aldolase, myoglobin, and urine myoglobin. With supportive care, both the liver and renal func- tions were recovered gradually and fully. This case shows that rhabdomyolysis can be one of the mechanisms of renal complication in cases of acute symptomatic hepatitis A.

복압성요실금(Stress urinary incontinence)과 절박성요실금(Urge incontinence)환자에서 TVT 수술 결과의 비교

이경구,이준호,권용욱,정태융,심희영,이상익 관동대학교 의과대학 의과학연구소 2005 關東醫大學術誌 Vol.9 No.1

Tension-free vaginal tape(TVT) has been widely used in the management of stress urinary incontinence(SUI), and has been applied to urge incontinence (UI). We evaluated and compared the outcomes between SUI and UI for patients who had undergone TVT. Patients were categorized into SUI(33 patients) and UI(26 patients). Before treatment, we asked about LUTSs using female bladder questionnaire. And we asked about sexual function. After treatment, the same questionnaires were repeated. During the postperative period, the objective and subjective success rate were evaluated. For operation outcome results, in SUI group there were 29 cases of cure (87.9%)and 2 of improvement(6.1%), and in UI group there were 20 cases of cure(76.9%)and 3 of improvement(11.5%) (p>0.05). The operation satisfaction rate of patients was 90.9% in SUI group and 84.6% in UI group(p>0.05). Improvement of sexual satisfaction occurred in 6(20.0%) of SUI group, and 3 (18.8%) of UI group, respectively(p>0.05). The objective success rate, satisfaction rate and sexual satisfaction of SUI patients did not significantly differ from the women with UI. Also, these results shows that TVT procedure improves some LUTSs in both groups. We consider the TVT procedure to be an effective treatment not for stress urinary incontinence but also urge incontinenece.

平均流와 線形 溫度勾配의 影響을 고려한 4-端子 定數들의 考察

李焌瑞,兪炳玖,車京玉,朴鎭庸 明知大學校 産業技術硏究所 1995 産業技術硏究所論文集 Vol.14 No.-

From a knowledge of the source impedence, the radiation impedence to the atmosphere and the four-pole parameters of all the sections of a silencer, it is possible to determine the transmission loss of the silencer. Since the gas in exhaust system of engine is flowing with high temperature we have to consider mean flow and temperature gradient effects to obtain accurate results. In this paper we will compare four-pole parameters with mean flow and linear temperature gradient effects with several other simpler cases already in the literature and then evaluate the availability of these in exhaust system.

폴리에스테르 섬유 고속방사중 필라멘트의 냉각과정 분석

윤문구,박준원,이승윤 건국대학교 산업기술연구원 1998 건국기술연구논문지 Vol.23 No.-

High speed fiber spinning of polyethylene terephthalate(PET) was simulated at take-up speed of 6000m/min utilizing generalized steady state governing equations of melt spinning and some other assumed relationship for structure formation. In the present paper, the effect of changes of quench air temperature on the spinning line were mainly discussed. Distance of necking point and stress from the spinneret was elongated when higher quench air temperature was applied. Changes of necking point and stress may affect the development of PET fiber structure in the high speed threadline.

어트랙터 해석을 이용한 AISI 304강 열화 신호의 카오스성 평가

고준빈,오상균,김홍배,이성구,이영호 韓國工作機械學會 2000 한국생산제조학회지 Vol.9 No.2

This study proposes the analysis and evaluation method of time series ultrasonic signal using the chaotic feature extraction for degradation extent. Features extracted from time series data using the chaotic time series signal analyze quantitatively material degradation extent. For this purpose, analysis objective, in this study, is fractal dimension, lyapunov exponent and strange attractor on hyperspace. The lyapunov exponent is a measure of the rate at which nearby trajectories in phase space diverge. Chaotic trajectories have at least one positive lyapunov exponent. The fractal dimension appears as a metric space such as the phase space trajectory of a dynamical system. In experiment, fractal(correlation) dimensions and lyapunov exponents showed values of mean 3.837∼4.211 and 0.054∼0.078 in case of degradation material. The proposed chaotic feature extraction in this study can enhances ultrasonic pattern recognition results from degradation signals.

피나무(Tilia amurensis), 뽕잎피나무(T. taquetii), 일본피나무(T. japonica)의 형질분석을 통한 분류학적 한계

尹準九,張珍成,金輝,張桂羨,李興洙 서울大學校農業生命科學大學附屬樹木園 2003 서울大學校 樹木園 硏究報告 Vol.- No.23

본 연구는 한국산 피나무속의 3종(T.amurensis, T. insularis, T. taquetii)과 일본피나무(T.japonica)를 대상으로 6개 정량 형질(잎의 길이와 폭, 털의 밀도, 화경의 길이, 열매의 길이와 폭)을 비교 검토하였다. T.amurensis(피나무)와 T. insularis(섬피나무) T. taquetii(뽕잎피나무)는 기존에 잎의 크기와 털의 정도가 주요 형질로 알려져 있지만 본 연구결과 모두 뚜렷한 구분이 없는 연속변이를 보였다. 또한, 일본피나무와 국내 자생 피나무와 비교한 결과 기존에 알려진 화경의 길이에서 차이를 보였는데 제한된 개체를 근간으로 조사한 결과 일본피나무가 다소 긴 것을 확인하였다. 국내 자생 피나무, 섬피나무, 뽕잎피나무의 경우 독립된 종이기보다는 모두 피나무의 지역적 변이체임을 확인함과 동시에 동일종으로 처리하는 것이 타당하다고 생각한다. 그러나, 일본피나무의 경우는 좀 더 많은 개체수를 확보하여 화경의 길이에 대해 보다 자세한 조사가 이루어져야 할 것으로 생각된다. The hair density and type of leaf and bract, size of leaf and absence/presence of staminodes are important to recognize many taxa of Tilia. The systematic relationships among T. amurensis, T. insularis, T. taquetii in Korea and T. japonica in Japan were confused and were not clarified yet. Flower and fruit specimens of 121 individuals were sampled to investigate patterns of intraspecific variation and to evaluate the species delimitation among Tilia amurensis, T. taquetii, T. insularis, and T. japonica using six characters. The morphological differentiation among T. amurensis, T. insularis, and T. taquetii was not sufficient to warrant recognition of either specific or varietal status and should be treated as conspecific under T. amurensis. Based on results of limited number of specimens, the morphological discontinuity between T. amurensis and T. japonica was found only in peduncle length. Further study on this reproductive character are required to conduct any taxonomic treatment on these taxa.

시화호의 배수갑문 운용에 따른 수질변화

김종구,김준우,조은일 한국환경과학회 2002 한국환경과학회지 Vol.11 No.12

To evaluate the change for water quality after the water gate operation in Shiwha lake, in situ survey were conducted on september in 2000 and January, march, jane in 2001. Chemical characteristics and eutrophication level was estimated estimated from the survey data. The water quality of the Shinhwa lake was greatly affected by pollutant load from rainfall, and formation of stratification of chlorophyll-a was occurred in autumn, due to increased nutrient, high water temperature and low salinity after rainfall runoff. The mean concentration of DIN, DIP were 0.346mg/L 0.0217mg/L in surface water and 0.826mg/L, 0.0415mg/L in bottom water, respectively, which were over Ⅲ grade of seawater standard. Also high percentage of ammonia nitrogen to DIN in bottom water for autumn and winter was affected by released nutrient from sediment Correlation analysis of chlorophyll-a versus TSS was shown that organic matter was affected by autochthonous organic matter stem from the algae, these factor showed reverse correlation about salinity. Closely correlations among to the water quality constituent in continuity survey was appeared. The results of eutrophication index estimation showed the high potentiality of red tide occurrence in Shiwha lake, particularity in summer or fall. Overall water quality was greatly improve to compared with measuring data during 1997∼1998 at the beginning water gate operation, which reported by KORDI. Therefore, to improve of water quality in Shinwha lake, we need to establish of managemant plan about nutrient release from sediment, rainfall, maximum of seawater exchange.

제지폐수의 응집특성에 관한 연구

조준형,정원구,김준환 江原大學校 森林科學硏究所 1998 Journal of Forest Science Vol.14 No.-

본 연구에서는 우유팩을 이용하여 재생용 화장지를 만드는 제지공장의 제지폐수를 이용하여 폐수의 침강특성 및 SS, BOD_5, 제거 효율을 검토하고, Jar-tester를 이용하여 급속교반시간, 완속교반 시간에 따른 탁도, SS, BOD_5 및 최적 응집제 주입량을 결정하였다. 각종 응집제 첨가 및 침강 특성에 의한 탁도제거의 효율을 측정하였다. 적정 응집제 첨가량, 급속교반 및 완속교반의 시간에 따른 처리 효율의 이론식을 제시하였다. 또한 응집제 Polyalunlinium chloride(PAC) 및 Aluminium sulfate의 응집 비교 실험을 행하였다. Sedimentation characteristics SS, BOD_5 and removal efficiency of waste water in the tissue paper mill using milk carton were examined. Optimum dosage of coagulant, rapid mixing time and slow mixing time were determined by turbidity. SS and S-BOD_5 and then equation for treatment efficiency was suggested. For the coagulant, polyalumimium chloride(PAC) are compared with a little better efficiency compare to the aluminium sulfate.

광섬유 내의 산란광을 이용한 분포형 온도 센서 시스템에 관한 연구

閔俊基,崔成求,盧度煥 全北大學校 1996 論文集 Vol.41 No.-

A distributed temperature sensor using optical fiber can monitor temperature at every point along its length. It is based on OTDR using Raman scattering, and optical fiber itself is used an sensing device. It detects weak Raman scattering intensities generated at various point along the optical fiber path. The temperature distribution is derived from the intensity of the Raman scattering light and the time between light injection and signal detection. In this paper, the principle of sensing, the system design and the results of experiments are reported.

기질성 뇌장애 환자의 구조적 뇌영상과 비교한 저해상 전자기 단층 촬영 영상

이승환,권구형,박영민,김 현,이강준,정영조 大韓神經精神醫學會 2006 신경정신의학 Vol.45 No.3

Objectives : Patients with organic brain lesion can produce unique slow waves (delta and theta) in the EEG. Basic assumption of this study was that the low resolution electro magnetic tomography (LORETA), an inverse source localization program, can provide functional images representing increased slow wave activity in these patients compared to normal subjects. Methods : The current study was performed by 18 channels digital EEG for 10 patients whose organic deficit have been Visually confirmed by CT or MRI. The source images of slow wave (1-7 Hz) frequency were produced by LORETA-key program. Results : We found that in eight out of ten subjects, LORETA successfully found out the source regions which were very closely matched to their original brain lesions. However in two subjects whose organic brain lesions were too small (<1cm) and located out of gray matter, we failed to find any increased slow wave activity compared with normal control. Conclusion : We can conclude that LORETA could be a useful method to provide functional imaging in patients with gray matter deficits in their brain. Its usefulness and limitations were discussed.