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Skin entrance dose for digital and film radiography in Korean dental schools
Cho, Eun-Sang,Choi, Kun-Ho,Kim, Min-Gyu,Lim, Hoi-Jeong,Yoon, Suk-Ja,,Kang, Byung-Cheol 대한구강악안면방사선학회 2005 Imaging Science in Dentistry Vol.35 No.4
Purpose : This study was aimed to compare skin entrance dose of digital radiography with that of film radiography and to show the dose reduction achievement with digital systems at 11 dental schools in Korea. Materials and Methods : Forty six intraoral radiographic systems in 11 dental schools were included in this study. Digital sensors were used in 33 systems and film was used in 13 systems. Researchers and the volunteer visited 11 dental schools in Korea. Researchers asked the radiologic technician (s) at each school to set the exposure parameters and aiming the x-ray tube for the periapical view of the mandibular molar of the volunteer. The skin entrance doses were measured at the same exposure parameters and distance by the technician for each system with a dosimeter (Multi-O-Meter : Unfors instruments, Billdal, Sweden). Results : The median dose was 491.2 μGy for digital radiography and 1,205.0 μGy for film radiography. The skin entrance dose digital radiography was significantly lower than that of film radiography (p<0.05). Conclusion : Fifty-nine percent skin entrance dose reduction with digital periapical radiography was achieved over the film radiography in Korean dental schools.
최태석,이동범,천영호,이근배 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.4
Open-ended questionnaire was asked 135 girls senior high school fencing athletics. According to these collected and analyzed open-ended questionnaires, they give the following conclusions. Mostly, open-ended questionnaires showed girls senior high school fencing players practiced many images such as self-confidence, patience, tenacity, competition and a practice, and in an image frequency aspect, epee players showed more images than foil players. However, in image content, while epee players had a tendency of defense, foil players, in contrast, showed attack-oriented images. As our worldwide predominant fencing athletics train formally the deficient imagery discipline, it is very important to make the applicable program of imagery discipline.
조명숙,송근배,윤희숙 대구보건대학 1992 대구보건대학 論文集 Vol.13 No.-
The purpose of the present study was to determine the mercury in human scalp hair and urine from amalgam fillings, sixty-five subjects were examined their oral status, alginate impression were taken to make dental arch stone models and calculated their surface area of amalgam fillings. The 28 control subjects had no amalgam filling and 37 compare subjects had an average of 12 surfaces of amalgam. The morning urine and scalp hair were collected from all subjects and samples were digested in acid digestion bomb(Parr Instrument Company, U.S.A.) The mercury contents were determined with atomic absorption spectrophotometer(Model 551, IL Co., U.S.A.) and atomic vapor accessory (Model 440, IL Co., U.S.A.) . The results obtained were as follows ; 1. The urinary mercury contents of control group(no amalgam in oral cavity) were 2±10.0㎍/g. creatinine/L and compare group(amalgam filling) were 16.7±16.0㎍/g. creatinine/L(p<0.05). 2. The scalp hair mercury contents of amalgam filling group(3.29±1.03㎎/L) were slightly higher than those of the amalgam free group(3.04±1.11㎎/L) but not significant difference(p>0.05). 3. The linear correlation coefficient was 0.3490 and significantly different between mercury content of scalp hair and amalgam surface area(p<0.05), but had no significant difference between urinary mercury contents and amalgam surface area(r=0.0934, p>0.05).
정신지체 학생에게 적용된 사회인지 재활프로그램의 성과와 한계
조근숙,박중규 대구대학교 특수교육재활과학연구소 2009 再活科學硏究 Vol.27 No.2
많은 정신지체 학생들이 일정기간의 교육을 받은 후에도 사회의 구성원으로 통합되어 지역주민들과 상호작용 하며 그 역할을 다하며 살아가는 것에 어려움을 겪고 있다. 이는 사회인지 기능에 따른 문제점이라 생각되어졌다. 이에 권정혜(2003)가 개발하고 Choi와 Kwon(2006)이 그 효과를 검증한 사회인지 재활 프로그램을 특수학교에 재학중인 정신지체 학생들에게 적용하여 사회인지 능력의 향상정도․사회기술의 향상 정도를 알아보고자 하였다. 본 연구는 상주시에 있는 S정신지체 특수학교 고등학생·전공과 학생을 대상으로 대상자들의 생활연령과 사회적 요구에 맞게 일부 수정된 사회인지 재활프로그램을 16회기에 걸쳐 실시하였고, 연구 결과를 요약하면 다음과 같다. 첫째, 사회인지 재활프로그램은 정신지체 학생들의 사회인지 능력 향상에 있어서 유의미한 결과를 가져오지 못했다. 둘째, 사회인지 재활프로그램은 정신지체 학생들의 사회기술 능력 향상에 있어서 대인관계기능평가에서는 유의미한 결과가 나타났으나, 사회생활기술척도에서는 유의미한 결과가 나타나지 않았다. 이는 사회인지 능력이나 사회기술이 단기간에 향상되는 것이 아니라는 것을 보여주며, 학교와 가정이 연계된 교육적인 접근이 필요함을 시사한다. A number of mentally retarded students have a great difficulty interacting with members of the community and performing their roles as an adult. It is estimated that this is not because of the mental retardation but because of the problem with social cognition function they have. Accordingly, the degree of improvement in social cognition ability and social skill was investigated, by applying Social Cognition Enhancing Rehabilitation Program- developed by Kwon Jeong-Hye(2003) and approved by Choi and Kwon(2006) - to the mentally retarded students in a special school. The purpose of this study is to prove the effect of Social Cognition Enhancing Rehabilitation Program on the improvement of social cognition ability and social skill for the mentally retarded students. The specific purposes are as follows. First, does Social Cognition Enhancing Rehabilitation Program improve the mentally retarded students' social cognition ability? Second, does Social Cognition Enhancing Rehabilitation Program improve the mentally retarded students' social skill? In this study, Social Cognition Enhancing Rehabilitation Program reorganized by chronological age and social needs was conducted 16 times among the students in mental retardation special school in Sang-ju. The results were as follows. First, Social Cognition Enhancing Rehabilitation Program has no meaningful effects on the improvement of the mentally retarded students' social cognition ability. Second, Social Cognition Enhancing Rehabilitation Program has interactive effects by groups on the improvement of the mentally retarded students' social skill in terms of personal relationship skill evaluation. However, there are no significant interactive effects by groups in terms of social life skill scale. This indicates that social cognition ability and social skill cannot improve in a short period and that there is a need for educational approach connected with home and school.
조건우,김희원,권석근,곽은호,문석형 대한방사선 방어학회 1985 방사선방어학회지 Vol.10 No.2
KSC-1 핵연료 수송용기에 대한 방사선차폐해석을 QAD-CG, ANISN-KA, DOT 3.5등의 전산코드와 DLC-23/CASK의 핵단면적 자료를 사용하여 수행하였다. 운반물인 사용후 핵연료집합체로부터 방출되는 중성자 및 감마선의 방사선원항은 ORIGEN-79전산코드를 이용하여 평가하였다. 방사선차폐해석 결과, 1개의 가압경수로 사용후 핵연료집합체를 운반할 수 있는 KSC-1핵연료 수송용기는 정상적인 수송조건에서 뿐만 아니라 가상적인 사고수송조건하에서도 관련 법령에서 정하는 기준을 만족하고 있어 방사선차폐해석의 관점에서 볼 때, 그 안전성이 입증된다. Radiation shield design for a shipping cask, KSC-1, was evaluated to verify that the cask can be used in the transportation of a spent fuel assembly discharged from KNU 5 & 6. Radiation source term of the spent fuel assembly was calculated with the computer program ORIGEN-79, QAD-CG, ANISN-KA and DOT 3.5 codes were used in the shielding calculations and the nuclear cross section data needed was extracted from the DLC-23/CASK library. It is concluded that KSC-1 shipping cask satisfies the requirements specified in the relevant regulations under normal conditions of transport and under accident conditions in transport.