노안수술후 각막형태검사 변화

박근성,고길환,김용선,이재림,민병무,최시환 충남대학교 의학연구소 2001 충남의대잡지 Vol.28 No.2

We prospectively analyzed the corneal topography of 26 eyes in 26 patients who had undergone scleral expansion for correcting presbyopia. We examined 26 eyes of 26 patients which were devided into 2 groups (mean age: 51 years, range 40-60 years) according to type of scleral expansion band, with computerized corneal topographic analysis system. Preoperatively and 5 times postoperatively (1day, 1week, 2weeks, 1month, 2months), quantitative descriptors of corneal topograpgy such as Sim K (simulated keratometry value), SRI(surface regularity index), and SAI(surface asymmetry index) were measured at each visit. The mean follow-up period was 43 days. Sim K of the operative eyes ranged from 0 to 2.5 (mean, 0.93) before operation, and mean 2.24 at postoperative 1 day in group Ⅰ. In group Ⅱ, Sim K was mean 2.20 at postoperative 1 day and decreased thereafter. SRI was from 0.54 to 1.39 and SAI was from 0.09 to 0.45 before operation. After operation, mean SAI was maximum at postoperative 2 week and mean SRI was maximum at postoperative 1 day and decreased thereafter. After two months, it became minimum. This study demonstrates that quantitative topographic change after scleral expansion for correcting presbyopia were great during first 1 week after surgery but this change diminished thereafter. Further long studies are in progress to evaluate the long term effects of this procedure.

인터넷상에서 페트리 넷을 이용한 하이퍼-프리젠테이션의 명시 표현 및 불일치성을 검증하기 위한 방법 연구

우시연,조종근,임영환,임기욱 한국정보처리학회 2002 정보처리논문지 Vol.9-b No.5

하이퍼-프리젠테이션 개념은 하이퍼-미디어 개념을 확장한 것으로, 동적으로 연출되고 있는 상황에서 링크개념을 설정하여 특정시점이나 지점에서 원하는 다음 정보를 보기 위해서 비순차적으로 연출할 수 있도록 하는 연출이다. 이러한 비순차적인 연출방법인 하이퍼-프리젠테이션 개념을 도입함으로써, 자유로운 멀티미디어 연출이 가능하게 되었지만, 이러한 동기화 방법에 의해서 혼합된 여러 프레젠테이션들간에는 일관성 문제가 발생할 수 있다. 본 논문에서는 하이퍼-프리젠테이션 명시 프로그램의 일관성 검증을 위해서 Petri Net을 이용한 하이퍼-프리젠테이션 명시 방법을 제시하고, 그것을 이용한 명시 프로그램의 일관성을 검증하는 방법을 제안한다. The concept of a hyperpresentation, as an extension of a hypermedia, is the presentation in which time-varying multimedia presentations are dynamically linked together and a hyperlink's context can be changed over time at any time during a continuous presentation. While this concept provides users with a flexible and powerful tool for their descriptions of the multimedia presentation, inconsistency problems in the synchronized presentations connected by hyper links can be introduced. This paper introduces a method of describing the hyperpresentation using Petri Net and proposes a methods of detecting inconsistent hyper link loop in the hyperpresentation description.

Protease와 CMCase를 동시에 분비하는 Bacillus sp. SY8-24의 분리 및 대량 생산 조건

양시용,김창원,박근규 건국대학교 동물자원연구센터 1998 動物資源硏究誌 Vol.19 No.-

A bacterium producing protease and CMCase was isolated from soil, has been identified as Bacillus sp. The isolate, named Bacillus sp. SY8-24, was shown to be very similar to Bacillus subtilis on the basis of its biochemical properties. Medium optimization for mass production of Bacillus sp. SY8-24 was performed. The optimum condition for the mass production of Bacillus sp. SY8-24 was attained in a culture medium composed of 1%(w/v) soybean meal and 2%(w/v) molasses.

구간계산을 사용한 NEWTON방법에 관한 연구

김근시,김도현 濟州大學校 師範大學 科學敎育硏究所 1992 科學敎育 Vol.9 No.1

In general, interval arithmetic as a number of significant applications in cientific, engineering and statistical computation. In this thesis, we shall consider a method for including zeros of a real function of one real variable X. Among the many methods for root-find-ing. we shall study especially the Newton method which uses derivatives. It can be used to find zeros of the function, indluding non-accuracy coefficients.

닭에서 오존수의 급여가 닭와포자충 감염에 미치는 영향

박배근,染谷梓,류시윤,김현수,조성환,전무형,손화영 충남대학교 수의과대학 동물의과학연구소 2001 動物醫科學硏究誌 Vol.9 No.-

Ozone is very effective in acute and chronic viral disease as a virucidal agent and in improving the general health of the animals. The effects of ozonized water supply against Cryptosporidium baileyi was studied in 2-day-old chicken. After oral inoculation of chicken with 1×10^6 oocysts, ozonized water(0.5ppm) and tap water were supplied to experimental and control group, respectively. The prepatent period of both group was 6 days postinoculation(PI). The patent period of experimental group was shorter(6-18 days) than that of control group(6-22 days). The number of oocysts in the feces were maximum on days 11 PI, indicating 1.99×10^6 oocysts/experimental chicken and 6.00×10^6 oocysts/control chicken. The number of discharged oocysts during experimental period was higher in control group than that of experimental group. In the view of febric bursa sections on 7 days PI, the number of endogenous development of C baileyi was smaller in experimental group that in control group. This results indicate that the autoinfected sporozoite were damaged by ozone. The ozonized water supply to chickens is alleviation cryptosporidiosis.

Mitomycin-C 적용시간에 따른 누낭비강연결술의 수술결과

박근성,임진호,민병무,최시환,김창식,김용백 충남대학교 의학연구소 2001 충남의대잡지 Vol.28 No.2

To determine the usefulness of application of Mitomycin-C (MMC) and effectiveness of different concentration of MMC in external DCR. A total of 100 eyes of 87 patients diagnosed with primary acquired nasolacrimal duct obstruction were assigned randomly to either a MMC group or control group. The surgical procedures in both groups were same. In MMC group, a piece of neurosurgical cottonoid soaked with 0.4 mg/ml MMC was applied to the osteotomy site and then was removed after 5 and 10 minutes differently. Nasoendoscopic examination was performed at 1 month, 3 months, and 6 months after surgery for all patients. The causes of epiphora as trauma (20 cases), failed DCR (1 case), sinus surgery (2 cases), unknown (77 cases). The overall anatomical success rate of the procedure was 88% and functional success rate was 79%. Obstruction site was related to anatomical surgical results. Anatomical surgical outcome at lower lacrimal sac level group of patients showed a statistically significant success rate, but functional surgical outcome showed no significant difference between the two groups. The anatomical success rate was 87.7% and the functional success rate was 84.2% in MMC group. The anatomical success rate was 88.3% and the functional success rate was 74.4% in control group. Application of MMC and it's application time were not related to surgical results.

Malraux의 영화적 기법

오시근 全北大學校 1982 論文集 Vol.24 No.-

마우스에서 오존수의 급여가 쥐와포자충 감염에 미치는 영향

박배근,김덕환,류시윤,김현수,조성환,전무형 충남대학교 수의과대학 동물의과학연구소 2000 動物醫科學硏究誌 Vol.8 No.-

Ozone is very effective in acute and chronic viral disease as a virucidal agent in reversing positive antibody tests and in improving the general health of the animals. The effects of ozonized water supply against Cryptosporidium muris was studied in 5-weeks-old mice. After oral inoculation of mice with 1×10^6 oocysts, ozonized water(0.5ppm) and tap water were supplied to experimental and control group, respectively. The prepatent period of both group was 8 days postinoculation(PI). The patent period of experimental group was longer(62days) than that of experimental group(57days). The number of oocysts in the feces were maxium on days 28 PI, indicating 3.54×10^6 oocysts/experimental mouse and 5.56×10^6 oocysts/ control mouse. The number of discharge oocysts during 12-33 PI was more in control group than that of experimental group. In the view of gastric gland section on days 28 PI, the number of endogenous development of C muris was smaller in experimental group than in control group. This results indicates that the autoinfected sporozoite were damaged by ozone.

Malraux 소설의 운명과 대응방법

오시근 全北大學校 1981 論文集 Vol.23 No.-

Comme ecrivain, malraux demande s’il existe une donne sur quoi se fonder la notion d’homme. Cette probleme metaphysque procede de sa profonde penetration de la civilization. Il analyse l’histoire de la civilization europeenne: L’homme europeen quitte Dieu pour devenir le maitre de ce monde. En fait, l’homme est mort après la mort de Dieu. Pourquoi? L’homme espere que la science peut elucider, la Verite, l’Etre, la notion d’homme. Mais la science ne tend pas a une notion d’homme, mais a une commaissance du cosos. A la verite, le progress de la science ne peut elucide la relation du monde-homme, la domaine de la verite. Alors, l’homme sans Dieu se end compte de sa condition. La conaition de l’homme provident de ce qu’il est dans le monde.

병아리에서 닭와포자충에 의한 F-낭염이 SRBC에 대한 항체형성에 미치는 영향

박배근,사또시, 가바모도,전무형,김무강,류시윤 충남대학교 수의과대학 동물의과학연구소 1996 動物醫科學硏究誌 Vol.4 No.-

병아리에 닭와포자충(Cryptosporidium baileyi)의 감염에 의한 F-낭염이 면양 적혈구(SRBS)에 대한 항체 형성에 미치는 영향을 관찰하기 위하여 2일령의 병아리에 닭와포자충의 오오시스트 1 × 10^6개를 경구 접종하였다. SRBC를 경정맥 및 F-낭의 관강에 감작하고 항체형성능과 F-낭의 조직소견을 1 주일 간격으로 10주간 관찰하여 다음과 같은 결과를 얻었다. 1. 체중의 증가율은 실험 전 기간을 통하여 전반적으로 실험군이 대조군 보다 낮았다. 2. F-낭 지수(Bursa index)는 1주령 부터 5주령 까지는 1이하로 위축되었으며, 6주령 부터 1이상으로 종창되었다. 특히, 6주령의 경우 1.94로 종창의 정도가 가장 심하였다. 3. 상피세포에서 발육하고 있는 닭와포자충의 오오시스트 및 점막하직과 여포내의 호산구의 침윤은 1주령에서 4주령 까지 관찰되었으며 1주령에 가장 많은 오오시스트가 상피에서 관찰되었다. 4. 상피세포 및 FAE의 핵융해, 비만세포의 출현, 여포의 괴사 및 상피의 증생은 5주령 이후에 관찰되었다. 상피세포의 핵융해는 6주령에 가장 심하였다. 5. HA titer는 정맥내로 항원을 감작한 군에서 7주령에 최고의 역가를 보였으며 대조군이 64±35, 실험군이 44.8±15.7이였다. F-낭의 관강내로 항원을 감작한 군에서는 8주령에 대조군이 11.2±3.9, 실험군이 2.8±1.0로 실험군의 역가가 모두 낮았다. 이상의 결과로 볼 때 닭와포자충의 감염에 의한 F-낭염(bursitis)은 SRBC에 대한 항체형성능을 저해The 함을 알 수 있다.