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변이제와 안정제가 Candida dattila의 Killer 활성에 미치는 효과 및 Gel Filtration에 의한 Killer Toxin의 분리
백순영,정원철,최언호 서울여자대학교 자연과학연구소 2000 자연과학연구논문집 Vol.12 No.-
Candida dattila K105 and K108 are killer yeasts isolated from Korea wine grapes. Treatment with cycloheximide of 0.1 to 10 ppm, ethidium bromide of 1 to 100 ppm, or acriflavine hydrochloride of 10 to 1,000 ppm killed the cells of Candida dattila K105 and K108, the larger cells with higher concentration of the mutagens, but the killing activity was not cured by their treatment. The killing activity of K105 and K108 were conserved for long time by treatment with inositol or glycerol of 3.0% at 5℃ and 20℃, while it was almost cured at 35℃. From the isolation through gel filtration, the toxin was deduced to be glyceroprotein.
一部 男子大學生들과 運動選手들의 一側優位性(左右差:手·足·體·眼)에 關한 比較硏究
백현중,윤태영,최중명,박순영 慶熙大學校 1991 論文集 Vol.20 No.-
This study is from March 1st, of 1988 to September 31, 1988. The subjects of study consists of students in general who are in attendance at university and all samples are selected at random. The total number of subjects counts to 187(sports man : 56, College students : 131) and the researcher measures and analyses the subjects' physique, physical strength, the test of dominance eye, the functional tests of hand, foot, body and eye. The results as follows : 1. Physical growth and development Mean values of body height are 177.19±5.01㎝ for sports man and 173.3±0.46㎝ for college student and superior to standard value of Korean. Mean values of body weight are 69.6.±6.17㎏ for sports man and 66.1±1.68㎏ for college student, and the mean values of chest girth are 91.86±4.83㎝ and 94.1±1.53㎝. Mean values of sitting height are 93.0±4.28㎝ and 93.3±1.05㎝. 2. Physical fitness Mean values of grin strength are 41.6±4.3 for right side and 44.0±6.0 for left side in sports man and 44.2±1.4 for right and 46.3±1.7 for left in college student. Mean values of arm strength are 29.7±3.9 for right and 31.8±2.9 for left in sports man 25.±1.4 or right and 28.7±1.9 for left in college student. Mean values of leg strength are 38.4±5.8 for right and 43.8±6.1 for left in sports man and 43.5±1.8 for right and 44.2±1.1 for left in college student. 3. Functional rate of foot, trunk, eye and hand As considered according to its functions, the rates of right foot, left foot, both of feet in both of the sports man and college student, total rates are each of 83.3%, 16.7%, 2.4% for sports man and 53.7%, 39.0%, 2.6% for college student. The rates of right side, left side, both of sides in both of the sports man and college student, the total rates are each of 53.3%, 37.4%, 6.7% for sports man and 39.1%, 46.1%, 5.1% for college student. The rates of right eye, left eye, both of eyes in both of the sports man and college student, the total rates are each of 53.6%, 31.7%, 4.1% for sports man and 53.3%, 20.8%, 22.7% for college student. The rates of right hand, left hand, both of hands in both of the sports man and college student, the total rates are each of 67.5%, 21.8%, 5.2% for sports man and 84.5%, 10.4%, 2.2% for college student, respectively. 4. Tests of dominance eye As considered according to tests of dominance eye, the results of right eye, left eye in both sports man and college student, results are each of 62.5%, 37.5% for sports man and 70.2%, 29.8% for college students, 67.9%, 32.1% for the total of sports man and college student, respectively.
최순규,전영식,백운식 경희대학교 레이저공학연구소 2005 레이저공학 Vol.16 No.-
In this paper, diffuse optical techniques utilize light in the near infrared spectral range (600∼1000nm) to measure tissue physiology non-invasively. A light transport model based on the diffusion approximation is widely used to describe photon propagation in the NIR. We made diffuse optical tomography (DOT) system and measured about changed amplitude and phase in phantom. And then we compared simulation data with measured data. This research has pioneered the development of diffuse optical measurements.
J-curve relationship between corrected QT interval and mortality in acute heart failure patients
Chan Soon Park,Hyun-Jai Cho,Eue-Keun Choi,이상은,김민석,김재중,Jin-Oh Choi,Eun-Seok Jeon,Kyung-Kuk Hwang,Shung Chull Chae,Sang Hong Baek,Seok-Min Kang,Byung-Su Yoo,Dong-Ju Choi,Youngkeun Ahn,Kye-Hoon Kim,Myeon 대한내과학회 2020 The Korean Journal of Internal Medicine Vol.35 No.6
Background/Aims: This study investigated the prognostic power of corrected QT (QTc) interval in patients with acute heart failure (AHF) according to sex. Methods: We analyzed multicenter Korean Acute Heart Failure registry with patients with AHF admitted from 2011 to 2014. Among them, we analyzed 4,990 patients who were followed up to 5 years. Regarding QTc interval based on 12 lead electrocardiogram, patients were classified into quartiles according to sex. Results: During follow-up with median 43.7 months, 2,243 (44.9%) patients died. The relationship between corrected QT interval and all-cause mortality followed a J-curve relationship. In Kaplan-Meier analysis, both sex had lowest mortality in the second QTc quartile. There were significant prognostic differences between the second and the fourth quartiles in male (log-rank p = 0.002), but not in female (log-rank p = 0.338). After adjusting covariates, the third (hazard ratio [HR], 1.185; 95% confidence interval [CI], 1.001 to 1.404; p = 0.049) and the fourth (HR, 1.404; 95% CI, 1.091 to 1.535; p = 0.003) quartiles demonstrated increased risk of mortality compared to the second quartile in male. In female, however, there was no significant difference across quartiles. QTc interval was associated with 5-year all-cause mortality in J-shape with nadir of 440 to 450 ms in male and 470 to 480 ms in female. Conclusions: QTc interval was an independent predictor of overall death in male, but its significance decreased in female. The relationship between QTc interval and all-cause mortality was J-shaped in both sex.
백효순(Hyo-Soon Baek),최용진(Yong-Jin Choi),백진호(Jin-Ho Baek),엄종우(Jong-Woo Eom) 한국철도학회 2017 한국철도학회 학술발표대회논문집 Vol.2017 No.05
Railways are different from other means of transportation, especially in bridges, which is a special condition in which trains with large loads run parallel along parallel tracks. In the era of high-speed operation, the application of long bridges to bridges is still difficult, and the problems of structural change and long-term deflection and orbital stability due to temperature expansion between trajectories and bridges must be seriously considered. In this paper, we will examine the history of development by bridge type by classifying the conventional railway bridge in the 1990 "s and the modern railway bridge since 1990 before the introduction of the high - speed railway, We propose the development direction of bridges fitted to the above-mentioned high speed railway while maintaining the direction of future railway bridge and existing vehicle and railway system.
조정순(Chung Soon Cho),백혜순(Hye Soon Baek),최주순(Joo Soon Choi),오열근(Youl Gun Oh),임명호(Myung Ho Lim),김현우(Hyun Woo Kim) 대한스트레스학회 2009 스트레스硏究 Vol.17 No.4
시설에 입소되어 있는 아동의 대부분은 유소아기 시기에 감정적 박탈을 경험했을 위험성이 크며 그러므로 이후 감정행동 특성에서 문제를 나타낼 수 있다. 본 연구는 소아정신과 전문의에 의한 DSM-IV 진단 및 병원 임상에서 널리 사용되는 KPI-C, Kovac 우울척도, Spielberger 상태ㆍ특성 불안척도 등의 평가도구를 이용하여 중소도시인 OO 지역에 분포하고 있는 2개의 시설아동 64명을 대상으로 감정 특성, 행동 특성에 대하여 일반 대조군 아동 138명과 비교하고자 하였다. 결과적으로 시설아동은 Spielberger 특성 불안척도, KPI-C의 자아탄력성, 과잉행동, 사회관계, 자폐증 척도에서 대조군과 통계적으로 유의한 차이를 나타내었다. 상기의 결과로서 시설아동에서는 정서 문제 및 행동 문제가 생각보다 높게 나타나고 있음을 관찰할 수 있었으나 본 연구의 방법상 여러 가지 제한점이 있으므로 시설아동과 정신과적 문제의 인과관계를 해석할 때 주의를 요한다 하겠다. The institutionalized children has been experienced emotional deprivation in early period, they could show the problematic emotional, behavioral characteristics. The authors studied the emotional/behavioral characteristics for 2 institutionalized elementary children"s psychological evaluation by rating scale in a city. The DSM-IV clinical diagnosis applied by child psychiatrist. The psychiatrists and nurses evaluated institutionalized children by psychological evaluation by rating scale. Tools for the evaluation were Korean personality inventory for children, Kovac"s children"s depression inventory, state-trait anxiety inventory. Ultimately 64 institutionalized children, consisting of 26 boys (40.6%) and 38 girls (59.4%) and 138 normal control children participated. In the clinical evaluation between institutionalized children group and control group, institutionalized children were decreased ego strength, and increased hyperactivity, social withdrawal, autistic symptoms of KPI-C and trait anxiety of Spielberger Inventory. This result suggests that a lot of institutionalized children have complex emotional, behavioral, and attentional problems in addition to educational problems. (Korean J Str Res 2009;17:341∼348)
( Jun Jae Kim ),( Jeong Han Kim ),( Yong Hoon Choi ),( Hong Seok Choi ),( Yong Hwang ),( Young Baek Kim ),( Yong Hoon Choi ),( Ja Kyung Koo ),( Yun Jung Choi ),( Soon Young Ko ),( Won Hyeok Choe ),( S 대한간학회 2013 춘·추계 학술대회 (KASL) Vol.2013 No.1
Background: The Model for end-stage liver disease (MELD) has been widely used for predicting short term mortality in cirrhotic patients and employed for deceased donor liver allocation in the U.S. In year 2011, modification of MELD (Refit MELD) and MELDNa (Refit MELD-Na) was published (Gastroenterology 2011;140:1952-1960). We aimed to validate this for Korean patients with cirrhosis and ascites Methods: We retrospectively reviewed medical records of cirrhotic patients who admitted at konkuk university hospital from 2006 to 2010. Predictive value for 3 month mortality was compared between serum sodium (Na), Refit MELD, Refit MELD-Na, Child-Pugh score. Comparison was done by calculating area under receiver operating curve (AUROC). Results: Total 469 patients were enrolled and there were 60 deaths and 19 patients were performed liver transplantation (LT) within 3 month. Male patients were 358 patients (76.3%) and alcohol was the most common cause of cirrhosis (n=223, 47.5%). The most common cause of death was variceal bleeding (n=29, 48.3%) and hepatic failure was the next (n=27, 45.0%). After exclude patients who performed LT, 450 patients were analysed. AUROCs of Na, Refit MELD, Refit MELD-Na and Child-Pugh score were 0.636, 0.813, 0.776 and 0.771 respectively. There were significant differences between scores except between Refit MELD and Child-Pugh score (P=0.092), between Refit MELd-Na and Child-Pugh score (P=0.811). If analysis was performed in only patients with refractory ascites (n=109), AUROCs were 0.681, 0.801, 0.783 and 0.708 respectively. There were no significant differences between scores except between Refit MELD and Chld-Pugh score (P=0.032). Conclusions: Refit MELD and Refit MELD-Na showed good predictability for 3 month mortality in patients with cirrhosis and ascites. However, Refit MELD-Na is not a better predictor than Refit MELD although hyponatremia is related with mortality in cirrhotic patients with ascites.