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明東星 최신의학사 1972 最新醫學 Vol.15 No.5
Replacement of streptococci by staphylococci as the prime pathogens in many types of infection has been a well-established fact for almost 15 years. It is interesting to observe that this is true only of dental infections which have spread beyond the tooth apex. Reported studies of root canal cultures continue to demonstrate 50% to 65% streptococcal growth, with a much smaller incidence of staphylococcal growth MATERIALS & METHODS Cultures were obtained from 74 patients who had acute dentoalveolar infections. These infections were periapical or periodontal ir origin and all bad spread beyond the alveolus to cause obvious erythematous fluctuant swelling in the buccal, sublingual, or submandibular areas. Pus swabs were inoculated on blood agar for growth and further identification. In order to secure the 0-streptolysin of streptococcus and the alpha-hemolysin of staphylococcus, Antistreptolysin "0" Titer (AST) and .Antistaphylolysin Titer (ASTA) were performed on 52 sera, taken from the patients. The results are summarized as follows: 1. Positive growth of pathogenic organisms was observed in 37 of 74 specimens. The other was reported as having no growth. Thirtyfive specimens revealed growth of only one pathogen, and 2 revealed mixed growth of two types of organisms. 2. The most common organism isolated was staphylococcus aureus and epidermidis (73%) 3. Nine percent of the cultures in this study of clinically significant oral infections revealed pure growth of gram negative rods. 4. Fourty-Six percent of the dentoalveolar infections showed marked elevation of AST. 5. In most of the dentoalveolar infections no elevation of ASTA was found.
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明東星 최신의학사 1968 最新醫學 Vol.11 No.11
The author obtained the following. results through the studies on 1,228 roentgenographs of lower bilateral third molar regions of Korean youth; 1. The rate of :presence, of lower third molars was 75.3 per cent. 2. The period that crowns of mandibular third molars become completed was 17.0 years. 3. The period that roots of mandibular third molars become full length, was .22..1 years. 4. The period that apical closure of mandibular third molars become completed was over 26 years.
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코로나19 지역사회 감염과 정동정치– 전라남도 H지역 사례를 중심으로
정종민,명동호 부산대학교 한국민족문화연구소 2022 로컬리티 인문학 Vol.- No.27
This paper examines how rural people understand, tolerate and respond to the COVID-19 socio-medical disaster as an affective event. Through an analysis of affect theory and the concept of affective-discursive practice, it explores how locals express affect tht cannot be observed or defined in the language in daily encounters with the local infection of COVID-19 without being easily grasped by the state, media, or capital. By focusing on the case of H local region, it demonstrates how the locals cross over rumors, memories, and emotions entangled with hatred and social atmosphere towards a person or group that has been suspected of spreading the virus and therefore breaking the ethical codes of the community. Through embodied practices of caring for the moral community as a shared common, it highlights how these local people become affective commoners. Moreover, it provides insights on the situational and relational dimensions of everyday politics as affective social, historical, material entanglements in local communities, suggesting a new study of affective politics in regional politics.
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田載植,明東範 대한방사선 방어학회 1986 방사선방어학회지 Vol.11 No.2
CA 80-15 및 LR 115-1 cellulose nitrate비적검출기를 사용하여 지표공기층의 α방사능을 측정해석하였는바 이 검출기의 검출효율은 0.1mCi의 ²⁴¹Am α선을 사용하여 결정하였다. 지표에서 방출되는 라돈과 그 자핵종들에 의한 α방사능을 검출하기 위하여 두가지의 라돈컵을 사용하였으며 이들을 각각 지름이 15㎝, 깊이가 45㎝인 이웃한 두개의 땅구덩이를 만들어 그 안에 설치하여 일정기간 α방사능에 노출하였다. 두 라돈컵중 하나는 구덩이 지표면에 거꾸로 밀착시켜 밀폐공간이 되게 하고 다른 하나는 바닥에서 일정한 거리를 띄우고 컵 윗면에 구멍을 뚫어 공기의 소통이 가능하도록 하여 그 검출결과를 비교 검토하였다. α입자에 피폭된 비적검출기는 부식처리한 후 현미경으로 판독하고 통계분석 하였으며 그 결과를 지표공기 단위부피당 α방사능농도로 환산 평가하였다. A study on the measurement of alpha activity in ground air has been carried out using CA 80-15 and LR 115-1 cellulose nitrate nuclear track detectors. The detection efficiency of the detectors were determined by making use of an ²⁴¹Am alpha source of 0.1mCi in activity under a known geometrical arrangement. For the field measurement of alpha activity of emanated radon and its progeny in ground air two different radon cups were installed for a certain period of time in two neighbouring ground holes of about 15㎝ in diameter and 45㎝ in depth. Of the two radon cups one kept closed space during the detecting period, while the other kept open space with a hole enabling the air to ventilate. The etched tracks were read out by a microscope and the results obtained through statistical analysis were evaluated in terms of alpha activity per unit volume of air.
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Cellulose Nitrate 固體飛跡檢出器의 腐蝕條件
田載植,明東範 대한방사선 방어학회 1987 방사선방어학회지 Vol.12 No.1
알파입자 검출을 위한 고체 비적 검출기인 CA 8-15와 LR 115-1은 그 부식조건이 검출기 제조회사에서 이미 주어지고는 있으나 이들 검출기에 대한 최적부식에 관한 실험적 검토를 다시 행하였는바 최적부식시간에 현저한 차이가 있음을 발견하였다. 검출기의 방사선 조사는 이미 설정된 기하학적 배치조건하에서 0.1μCi수준의 ?? 알파선원으로 수행하였다. 부식시간과 용액 농도의 함수로서의 비적크기에 대한 분석과 검출기에 검출된 단위면적당 비적의 이론적 기대치에 대한 비교 조사를 행하였으며, 입사 알파입자의 유효 에너지에 대한 검출효율의 변화에 대해서도 연구하였다. An experimental study for an optimum etching of commercialized cellulose nitrate SSNTD, CA 80-15 and LR 115-1 for detecting alpha particles, was carried out. Although ordinary etching condition of the detectors has been recommended by the producer, a remarkable discrepancy in etching time was found. The detectors were irradiated with a 0.1μCi ?? alpha source under a known geometrical arrangement. Analysis on the track size as functions of etching time and etchant concentration and comparative examination of theoretically predicted number of tracks per unit area with that recorded on the detectors were made, including a study on the variation of detection efficiency with the effective energy of the incident alpha particles.
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