복식 전자궁적출술후 절단부에 발생한 난관탈출증 1예

송은석,이해혁,김태희,김정식,남계현,이권해,고은석 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2

Prolapse of the fallopian tube into the vaginal vault after hysterectomy is a rare complication. Since most of cases may resolve before detection or remain undiagnosed, the exact incidence is still unknown. Though most common sign of tubal prolapse is tender friable tissue in vaginal cuff, with the simptoms of lower abdominal pain, dysparenunia, vaginal discharge, or postcoital spotting. The definitive diagnosis should be confirmed histologically Recently, we experienced a case of fallopian tube prolapse after abdominal hysterectomy in a 41-year-old woman and report with a brief review of the literature.

산도가 장관의 운동성에 미치는 영향

장석종,박해근,김광진,임현재 충남대학교 의과대학 지역사회의학연구소 1982 충남의대잡지 Vol.9 No.2

The effects of hydrogen ion concentration changes on the motility as well as patterns of motility to autonomic drugs was investigated in the isolated duodenum and ileum of rabbits. Motility was recorded on a Physiograph with force transducer by means of Magnus method in sodium lactate Ringer's solution at 37℃ The pH of the Ringer's solution used were nornal (pH 7.4), acidic (7.4-5.5), and alkaline(7.4-9.5), titrated by 0.01 N BCI or 0.01 N NaOH solution respectively. Acetylcholine and norepinephrine as autonomic drugs was treated at normal, acidic, and alkaline Ringer's solution. Obtained results may be summarized as follows. 1. Increased hydrogen ion concentration (or decreased pH) inhibited tie motility of duodenum and ileum and that was proportional to increment of hydrogen ion concentration. 2. Decreased hydrogen ion concentration(or increased pH) enhanced the motility of duodenum and ileum and that at was proportional to decrement of h drocen ion concentration. 3. Effect of acetvlcholine on the patterns of motility in duodenum and ileum was not altered by hydrogen ion concentration changes. 4. Effect of norepinephrine on the patterns of motility in duodenum and ileum was not altered by hydrogen ion concentration changes.

WC-Co 초경 소지에 R.F sputtering법으로 제조한 TiB₂박막의 열처리 특성

이해석,임재복,김규호 嶺南大學校 工業技術硏究所 2004 工業技術硏究所論文集 Vol.32 No.1

TiB₂ thin films were deposited by R. F sputtering process on the WC-Co cutting tool. The growth rate of as-deposited films increased with R. F power. As-deposited films were amorphous by XRD measurement. The thermal annealing was performed to crystallize as-deposited films at temperature, which was varied from 900℃ to 1100℃. TiB₂ thin films annealed at 900℃ showed TiB₂, TiB peaks. As annealing temperature increased to 1100t, the intensity of the (101) and (110) peaks of TiB2 became sharp. The morphology of as-deposited films exhibited the granular structure by SEM observations. As the R. F power increased, the spherical particles of the films were coalesced and showed the large granular structure. The films annealed at 900℃ showed a fine crystallized grain and columnar structure. Whereas, the melt phase was formed on the surface of the films above 1000℃. The results of EDS analysis of melt phase show that the melt phase was composed of W, Co elements. The hardness of the films annealed increased with increasing thermal annealing temperature. Whereas, in the case of as-deposited films above R. F power 150W, the hardness of the films annealed above 1000℃ decreased because of melt phase.

부정교합자의 전치부 치아크기 부조화에 관한 연구

남동석,김혁수,심혜영 대한치과교정학회 발행 2005 대한치과교정학회지 Vol.35 No.6

Bolton 분석이 치아크기 부조화를 예측하기 위해 널리 사용되고 있지만 그 정확도에 대해서는 의문이 제기되어 왔다. 이에 본 연구는 부정교합자를 대상으로 하여 실제 전치부 부조화가 나타나는 양상을 조사하고, 그것에 영향을 주는 요인에 대해서 평가하고자 하였다. 연구대상은 다양한 부정교합 (ClassⅠ, ClassⅡ, Class Ⅲ surgery)을 가졌으며, 교정치료를 마친 80명의 환자들로 구성되었다. 치료 전 모형, 치료 후 모형으로부터 얻어진 셋업 모형, 그리고 치료 전후 측모 두부 X-선 계측사진을 분석하였으며 다음과 같은 결과를 얻었다. 한국인 부정교합자의 전치부 Bolton ratio는 Bolton의 표본 및 한국인 정상교합자 표본과 비교해 보았을 때 평균, 표준편차, 범위가 다소 크게 나타났다. 실제 전치부 부조화는 상악의 부족(deficiency)을 보이는 경우가 상악 과잉 (execess)을 보이는 경우보다 많았다. 전치부 Bolton ratio로부터 예측한 전치부 부조화는 셋업 모형을 통해서 얻은 실제 전치부 부조화와 비교해 보았을 때 차이를 보였다 (p<0.05). 성별 및 부정교합군은 실제 전치부 부조화에 유의한 차이를 보이지 않았다 (p>0.05). 수직피개와 상악 치아 절단연 두께는 실제 전치부 부조화와 상관관계가 거의 없는 것으로 나타났다. 다중회귀분석 결과 실제 전치부 부조화에는 치료 전 모형의 전치부 Bolton ratio, 치료 후 상악 전치가 교합평면과 이루는 각, 치료 후 절치간각, 치료 전 상악 우측 측절치 폭경 등의 요인이 기여하는 것으로 나타났다. Bolton analysis is widely used to predict tooth size discrepancy, but its accuracy has been challenged. The purpose of this study was to describe true anterior tooth size discrepancies among orthodontic patients and to evaluate the factors that affect true anterior tooth size discrepancies. The subjects consisted of 80 patients with varying malocclusions (ClassⅠ, ClassⅡ, ClassⅢ and ClassⅢ surgery) who were treated orthodontically. Pre-treatment models. set-up models from post-treatment models, and lateral cephalometric radiographs were analyzed. The results were as follows. The means, the standard deviations, and ranges of anterior Bolton ratio in the present study were somewhat higher than those of Bolton's samples and Korean normal samples. The number of patients showing maxillary deficiency was larger than that of patients showing maxillary excess in view of true anterior discrepancies. There was a significant diffrence between anterior Bolton discrepancy from pre-treatment medels and true anterior discrepancy from set-up models (p<0.05). There was no significant difference in true anterior discrepancies among malocclusion groups (p>0.05). And there was also no significant difference between the male and female groups (p>0.05). Overbite and the incisal edge thickness of maxillary anterior theeth have little relationship with true anterior discrepancies. Multiple regression analysis showed that true anterior discrepancy was mainly determined by anterior Bolton ratio. upper incisor to occlusal plane angle after treatment. interincisal angle after treatment, and upper right lateral incisor width.

성균관대학교 멀티미디어 원격교육 시스템(배움 한마당) 개발에 관한 연구

김석수,권해문,이상권,김상진,전진호,황대준 成均館大學校 科學技術硏究所 1997 論文集 Vol.48 No.1

We propose SKKU Multimedia Distance Education System for distance education between nature science campus(Suwon) and social science campus(Seoul) in Sung Kyun Kwan University on DooRae (Distributed Object Oriented Multimedia Application Crafting Environment for Collaboration) framework (or platform). We support ONE : N study mode for a group lecture and discussion between two campus, and also we support mediation for floor mode of a group lecture and brain storming for floor mode of discussion. The communication portocol of this system is composed of TCP/IP and UDP, and the network type is composed of WAN(El line)for between the Suwon campus and Seoul campus, ATM LAN for each campus(local site). And, this system supports the application development of the collaborative multimedia environment connected with the various network in the CBM (Computer based Multimedia) based. Also, it does not restrict on space between a teacher(s) and a student(s) into cyberspace which made by network. This system has an interaction, late comer, a question and an answer, multi-session, application sharing and whiteboard which resembles chalkboard. Also, various supplementary functions such as video conference and voice conference for this system are what makes face-to-face education effective. Also it supports real or non-real type. The operation system developed on windows 95.

심실근의 수축현상에 미치는 O₂, CO₂ 및 pH의 영향

장석종,박해근 충남대학교 의과대학 지역사회의학연구소 1983 충남의대잡지 Vol.10 No.2

It has been well known that increased hydrogen ion concentration causes the negative inotropic effect on the heart. But in the status of acid base imbalance, metabolic or respiratory, the question of which status has more profound effect on the cardiac muscle contractility remains unsolved. Furthermore, whether such effect is attributable to the change of the intracellular pH or the extracellular change is a matter of controversy. In many studies concerning to the effect of carbon dioxide tension on the cardiac contractility, the effect of excess oxygen has been ignored despite of its significant influence upon the cellular function. The author intended to investigate the effects of the change of carbon dioxide tension, which causes the pH change simultaneously, as well as the effect of excess oxygen on the cardiac ventricular contractility. Also, to prove which change, metabolic or respiratory, has more profound effect and which change, intracellulcr or extracellular, has more crucial effect, the author examined the contractility of the ventricle under two different conditions. They were as follows: a) PCO_2 was varying despite of same magnitude of the change in pH. b) pH was varying despite of the same magnitude of the change in PCO_2 Turtle hearts were used and the Langendorf preparations were made. The perfusate was Tris-buffer solution for turtle, saturated with various gases, such as air, pure oxygen, nitrogen, or different concentrations of CO_2 balanced with oxygen or nitrogen. The tension and maximal dT/dt were recorded with the Physiograph and its accessories. The results were summarized as follows. 1. The excess oxygen enhanced the ventricular contractility. 2. Increased carbon dioxide tension, which decreases the pH simultaneously, reduced the ventricular contractility and that was more pronounced when CO_2 was balanced with nitrogen gas rather than with oxygen gas. 3. The relationships among several physiological parameters were estimated as follows: a) Y=1.01X-0.56 X: percent change of the tension Y: percent change of maximal contration dT/dt b) Z=1.06X-4.56 Z: percent change of maximal relation dT/dt The corelation coefficient in a) is 0.939 and in b) is 0.926, being significant statistically (P<0.005). 4. When the change of pH were same but the changes of PCO_2 were different, the change of ventricular contractility was more profound in the respiratory decrease of pH, that was higher PCO_2, more depressing effect (P<0.005) was manifested, than in the case of metabolic origin (p<0.005). 5. When the changes of PCO_2 were same but the changes of pH were different, the influence of the latter parameter on the contractility was not significant (P<0.1). From the above results it was suggested that the increased PCO_2, which also causes the decrease of pH, has negative inotropic effect and excess oxygen has positive inotropic effect on the ventricular muscle of the turtle. The negative inotropic effect of the lowered pH on the ventricular muscle was revealed to be more profound when it was induced by respiratory distress rather than motabolic and may be affected by change of intracellular pH rather than extracellular pH.

MPLS 네트워크 상에서 IP VPN을 위한 이동성 지원 매커니즘

이영석,고성현,양해권 국립7개대학공동논문집간행위원회 2005 공업기술연구 Vol.5 No.-

본 논문에서는 MPLS(Multiprotocol Label Switching) 네트워크 상에서 VPN(Virtual Private Network) 사용자를 위한 이동 서비스를 지원하는 메커니즘을 기술한다. 이 매커니즘은 VPN 사용자가 같은 VPN 내의 다른 사이트로 이동하거나 다른 VPN 내의 어떤 사이트로 이동하는 경우에도 동일한 VPN 서비스를 제공해 준다. 이러한 VPN 환경에서, 라우터는 이동 VPN 사용자를 위해 추가적인 기능(홈 에이전트, 이동 에이전트, 대응 에이전트)을 제공해야 한다. 본 연구에서 고려된 MPLS VPN은 IETE RFC2547에서 제안된 PE(Provider Edge) 라우터 기반 VPN 방식이 아니라 CE(Customer Edge) 라우터 기반 VPN 방식이다. 이동성 지원을 제공하는 CE 기반 MPLS VPN을 PE 기반 MPLS VPN과 성능을 비교하기 위해 시뮬레이션을 수행하고 결과를 분석한다.

항균 활성을 가진 천연약재의 검색

송형석,이지연,오성준,백남인,김해영 경희대학교 생명자원과학연구원 2000 硏究論文集 Vol.21 No.-

We investigated the antimicrobial activity of the hot-water extracts and methanol extracts from medicinal plants. Sixty-two samples were tested by disk diffusion method at concentrations of 5,000ppm and 10,000ppm. Seven species of medicinal plants showed a significant antimicrobial activity against various food-borne microorganisms.

대학생 학습과정 조사도구의 비교·분석 연구

신현석,변수연,박해경 한국교육방법학회 2012 교육방법연구 Vol.24 No.1

Higher education institutions in the 21st century are feeling more and more pressure to show and prove their due accountability toward the society. The fulfillment of their social responsibilities can be accomplished by teaching and research. The quality of teaching in higher education institutions have been approached from various perspectives and tried to be measured by different methods. Among others, students' evaluation and ratings have been viewed as useful tools to evaluate the quality of education and supporting services of the institutions. This study analyzed 5 aspects of the three major student's evaluation and engagement questionnaires: National Survey of Student Engagement, Course Experience Questionnaire, Australian Survey of Student Engagement. In comparative analysis, researchers concluded CEQ has several shortcomings to be an efficient and effective student engagement scale while it still has some merits such as offering a opportunity to every college graduate to evaluate their college teaching experience. NSSE and AUSSE, taking the sample study framework, are reviewed to be easier to be administrated and contain more plentiful information about various facets of college students' experience and its relationship with achievements in college. This findings are expected to offer useful implications to those who develop the Korean scale of student experience and engagement. 본 연구는 세계적으로 사용되고 있는 대학생 학습과정 조사도구들 중 NSSE, CEQ, AUSSE의 개발 배경과 변천 과정, 개발 목적, 주요 내용, 결과의 활용 다섯 가지 측면을 조사한 후 이를 비교․분석함으로써 우리나라 고등교육기관의 대학생 학습과정 조사도구 개발을 위한 정책적 시사점을 제안하는 것을 목적으로 한다. 이들을 비교한 결과 다섯 가지 준거를 통한 비교․분석 결과 대학 강의 경험을 주요 내용으로 하는 전수조사 방식의 CEQ보다는 강의와 강의실 밖의 다양한 학습 기회에 대한 학생 참여도를 기준으로 대학생의 학습과정과 대학 교육의 질을 평가하는 표본조사 방식의 NSSE와 AUSSE가 우리의 고등교육 시스템에 더 적합할 뿐만 아니라 국제적 비교․분석도 가능한 조사도구로 평가되었다.

社會體育施設 實態調査 硏究 : 行政地域을 中心으로 Focus on Administrative Districts

宋錫英,鄭東求,李相哲,全海變,李正秀 한국체육대학교 부속 체육연구소 1986 체육연구소논문집 Vol.4 No.-

In modern societies, there are trends for people to engage in more positive and creative physical activities in their leisure time, which Leads to rather participant sports than spectator sports. This study was undertaken to explore the actual state of " Sports for all" facilities in Korea. The implications of the study are as follows: 1. The total numbers of "Sport for all" facilities in Korea is 20,080 ; there are 328 public facilities, 14,696 school facilities, 1,386 job-site facilities and 3,596 civil vacilitles, which indicates that Korea has got smaller number of those facilitles than the other developed countries. 2. The actual state of the facilities by each citles and counties shows the fact that Seoul has got 2,869 facilities, Incheon 434, facilities and Jeja 290 facilities. 3. The square measure for each Korean People is 0.795㎡. 4. The facilities have been set up in servral particalar events and districts. In conclusion, it is requested that all the facilities should be opened to the publics in order to anltivate the healthy mental and physical condition of peoples and to host various types of competitions, thereby promoting the sports, sport-for-all sports in particular, by means of civil-directed activities.