선천눈꺼풀처짐 교정술 후 발생한 난시변화

이동섭,김준모,우경인,장혜란,Dong Sub Lee,Joon Mo Kim,Kyung In Woo,Hae Ran Chang 대한안과학회 2006 대한안과학회지 Vol.47 No.9

Purpose: To determine postoperative astigmatic changes after surgery for congenital ptosis and the astigmatic changes depending on surgical method and to discern cases of postoperatively developed anisometropia or amblyopia. Methods: Fifty-one patients who underwent surgery due to congenital ptosis were reviewed. Refraction or cycloplegic refraction was conducted preoperatively and 3 to 6 months after surgery to measure astigmatic changes. Astigmatic changes in operated eyes were compared to control eyes. Astigmatic changes were compared depending on surgical method. Results: The mean astigmatism was 1.33±1.29D preoperatively and 1.48±1.13D postoperatively (P=0.10) and the mean astigmatic change in the ptotic and control eye was an increase in cylinder +0.56±0.55D and +0.68±0.72D (P=0.37). The mean astigmatic change of patients receiving frontalis sling was +0.57±0.67D which was similar to those who received levator resection (+0.56±0.50D). Newly developed anisometropia was found in three patients postoperatively due to an increase in astigmatism, but newly developed amblyopia was not found. Conclusions: The increase of astigmatism by ptosis surgery was not statistically significant and there was no statistically significant difference when accounting for surgical method. However, it is necessary to monitor refractive error carefully in younger patients to prevent amblyopia because postoperative increase of astigmatism can cause anisometropia.

정상 및 재생간의 Cytosol이 흰쥐의 대사기능에 미치는 영향

윤창식,손기섭 충남대학교 의과대학 지역사회의학연구소 1987 충남의대잡지 Vol.14 No.2

Extensive hepatic resection for massive injury and malignant tumor of liver has been markedly increased during past a few decades. Liver regeneration has been shown following partial hepatectomy by many authors with clinical and experimental studies, and considerable experiments have done to find out what is the real property of restoration, when it initiates, when it is most active and when it terminates after partial removal of liver, but still it is uncertain. The purpose of this paper is to provide to focus on the metabolic function, biochemical changes, following administration of cytosol extract from normal and regenerating livers in the normal and partially hepatectomized liver in rats. The results of this experimental study were summerized as follows: 1. The values of SGOT were increased remarkably in all groups (P<0.01). 2. The values of SGPT were elevated significantly in all groups as high as four times or six and a half times (P<O.01). 3. The values of glucose were seen considerably increasing rate in all groups except I -B, II -B, III-B and I.-D. Group I and II were seen very significant changes statistically as P<0.01 and group III were seen considerable change as P<0.05. 4. The values of BUN were seen considerable changes in group II only (P<0.05). 5. The values of total bilirubin were seen very remarkable changes in group II only (P<0.01). 6. The values of total protein were revealed very significant decreasing rate in group I and group II (P<0.01). 7. The values of alkaline phosphatase and albumin were revealed no significant changes in all groups. 8. The group II were revealed most significant changes. It was supposed that maximum response after partial resection of liver was seen at 12 hours in the rat.

장기간 숙성에 따른 죽초 및 목초액의 이화학적 변화

구창섭,문성필,박상범,권수덕 한국목재공학회 2002 목재공학 Vol.30 No.4

졸참나무, 맹종죽 및 소나무로부터 제조한 미정제 죽초 및 목초액을 약 1년 간 저장하고, 이들의 이화학적 변화를 주기적으로 분석하였다. pH, 유기산·용해타르 함량 및 비중은 전 숙성기간 중 큰 변화가 관찰되지 않았다. 그러나 색차의 경우 7∼10개월 사이에서 현저한 변화를 나타내었다. 또한 이 기간동안에 이들 죽초 및 목초액의 색깔은 연한 노랑 띤 오렌지색에서 자주색과 오렌지색으로 크게 변화하였다. 죽초 및 목초액 중 유기산 및 중성 성분(dihydro-2(3H)-furanone, furfural, furfuryl alcohol, 2-hydroxy-1-methyl-1-cyclopenten-3-one, 1-hydroxy-2-propanone, methanol)들의 함량은 3개월 간격으로 주기적인 증감을 나타내었다. 특히 유기산류와 중성 성분들의 관계는 0.92 정도의 높은 상관관계를 나타내었다. 페놀류의 함량은 비록 유사한 주기적인 증감이 관찰되었으나, 그 함량의 경우 숙성 전 기간에 걸쳐 감소하였다. Three different kinds of the crude vinegars obtained from oak(Quercus serrata), bamboo(Phyllostachys pubescens) and pine(Pinus densiflora) species were stored for approximately one year and periodically analyzed to monitor their physicochemical changes. Small changes in physical properties, such as the pH, specific gravity and amount of organic acids as well as water-soluble tar were observed in the entire course of aging period. However, the color difference of the vinegars showed a remarkable change between 7 and 10 months. In addition, these vinegars' colors changed from light yellowish orange to much deeper purple and orange during this period. The amount of organic acids and neutral compounds(dihydro-2(3H)-furanone, furfural, furfuryl alcohol, 2-hydroxy-1-methyl-1-cyclopenten-3-one, 1-hydroxy-2-propanone and methanol) in the vinegars increased or decreased periodically every three months. A good linear relationship (correlation coefficient of ca. 0.92) was obtained between the amount of organic acids and the amount of neutral compounds in such changes. However, although the amount of phenols increased or decreased periodically, its amount was decreased over the entire aging period.

의사 등방성 복합재료 적층판의 정 강도 해석

김인권(Kim In-Gwon),공창덕(Kong Chang-Duk),장병섭(Jang Byung-Sub) 대한기계학회 2001 대한기계학회 춘추학술대회 Vol.2001 No.3

The purpose of this work is to investigate the static strength, the stress distribution, and the failure process of quasi-isotropic composite laminates made of two different matrices when loading directions are changed. We carried out static tests of [0/-60/+60]<SUB>s</SUB> and [+30/-30/90]<SUB>s</SUB> laminates. Two types of matrices used are AS4/epoxy and AS4/PEEK. The damage mechanisms of the quasi-isotropic laminate, [0/-60/+60]<SUB>s</SUB> strongly depend on the load direction applied to the laminate.

PV 모듈의 손실 저항 성분을 고려한 I-V 출력 모델링에 관한 연구

홍종경(Jong-kyuong Hong),정태희(Tae-hee Jung),류세환(Se-Hwan Ryu),원창섭(Chang-sub Won),강기환(Gi-Hwan Kang),안형근(Hyungkeun Ahn),한득영(Deuk-Young Han) 대한전기학회 2008 대한전기학회 학술대회 논문집 Vol.2008 No.10

This paper, we proposed the theoretical model which includes series resistance R<SUB>s</SUB> and shunt resistance R<SUB>sh</SUB> of single-crystalline PV module and used numerical method based on physics. Series resistance R<SUB>S</SUB> was derived from approach for p-n junction diode instead of established form obtained from the simulator with irradiance changes. Electrical output characteristics for PV modules to count the effect of R<SUB>s</SUB> were then studied. Finally simulation results were compared to experimental data leading to good agreement.

만성 두부외상 환자에서 99mTc - HMPAO Brain SPECT의 임상적 유용성

서정호(Jung Ho Suh),김동익(Dong Ik Kim),정태섭(Tae Sub Chung),이종두(Jong Doo Lee),박창윤(Chang Yoon Park),정진일(Jin Ill Chung),김영수(Young Soo Kim) 대한핵의학회 1992 핵의학 분자영상 Vol.26 No.1

N/A Minima1 deterioration of cerebral perfusion or microanatomical changes were undetectable on conventional Brain CT or MRI. So evaluation of focal functional changes of the brain parenchyme is essential in chronic head injury patients, who did not show focal anatomical changes on these radiological studies. However, the patients who had longstanding neurologic sequelae following head injury, there had been no available imaging modalities for evaluating these patients precisely. Therefore we tried to detect the focal functional changes on the brain parenchyme using Tc-99m-HMPAO Brain SPECT on the patients of chronic head injuries. Twenty three patients who had suffered from headache, memory dysfunction, personality change and insomnia lasting more than six months following head injury were included in our cases, which showed no anatomical abnormalities on Brain CT or MRI. At first they underwent psychological test whether the symptoms were organic or not. Also we were able to evaluate the cerebral perfusion changes with Tc-99m-HMPAO Brain SPECT in 22 patients among the 23, which five patients were focal and 17 patients were nonfocally diffuse perfusion changes. Thus we can predict the perfusion changes such as local vascular deterioration or functional defects using Tc-99m-HMPAO Brain SPECT in the patients who had suffered from post-traumatic sequelae, which changes were undetectable on Brain CT or MRI.

Cytochalasin B와 Colchicine이 생쥐 간장의 담세관과 간세포의 미세구조에 미치는 영향

박창현,장병준,엄창섭,엄창섭 대한해부학회 1998 Anatomy & Cell Biology Vol.31 No.2

카이닉산 처치에 의한 흰쥐 뇌손상의 신경계 성숙에 따른 차이

김창미,엄창섭,전용혁,손용호,김현 대한해부학회 1997 Anatomy & Cell Biology Vol.30 No.4

老化過程에서 흰쥐 滑車神經의 軸索의 數 및 直徑의 變化

최영수,엄창섭,서영석 최신의학사 1987 最新醫學 Vol.30 No.8

임신 및 출산후 흰쥐 자궁의 Catecholamine 형광물질의 변화에 관한 연구

승경록,서영석,엄창섭 고려대학교 의과대학 1991 고려대 의대 잡지 Vol.28 No.1

This study was undertaken to investigate the pattern of distribution of adrenergic nerves in normal virgin, and the relatioships between the functions of adrenergic nerve and the female sex hormones changed peculiarly during pregnancy and post partum as previously reported by many authors. The reproductive organs were fixed in mixture of 4% formaldehyde and 0.5% glutaraldehyde and processed for fluorescent microscopy to show the catecholamine concentrations in nulliparous, pregnant(5, 10, 15 and 20 days), puerpheral(3, 7 and 15 days),and primiparous (30 to 45 days after parturition) rats. The result obtained in this investigation are summarized as followings. 1. In virgin uteri, catecholamine-fluorescence was visible intensely in the wall of vessels and their surrounding connective tissue and less intensely in myometrium than the vessels in all regions of reproductive tract. The intensity of fluorescence was higher In uterine cervix and tubal end of uterine horn than the main part of uterine horn. 2. In the pregnant uteri, the intensities of fluorescence did not changed at 5 days of pregnancy, but decreased gradually from 10 days to 15 days of pregnancy, and disappeared atmost completely in myometrium and small vessels except some of large vessels in perimetrium during the late pregnancy. 3. In lactating rats after parturition, the fluorescence was increased rapidly and almost completely restored by 15 days after parturition. 4. In the parous uteri at more than 30 days after parturition, the fluorescence showed slightly more intense than that in the nulliparous uteri. The above findings suggest that the alterations of catecholamine-fluorescence are much removed from the peculiar characteristic changes of the female sex hormonal levels during pregnancy and post partum. It is concluded that the alterations of catecholamine-fluorescence closely relate with the quantitative changes of uterine tissue during pregnancy and post partum, and having the experience of pregnancy and parturition, the uterus attain to maturity.