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예후 불량한 치아를 대체하는 제3대구치를 이용한 자가치아이식술
송일석,Song, Il-Seok 대한심미치과학회 2020 Journal of the Korean Academy of Esthetic Dentistr Vol.29 No.1
임플란트 술식은 그 동안 많은 발전을 하였고, 자연치를 대체할 훌륭한 치료법임에는 부인할 수 없지만 치주인대가 존재하지 않는 구조적 한계점, 발치 직후 시작되는 bundle bone의 흡수는 자연치와 같은 적절한 emergence profile을 만들어내기 어려울 수 있고 이는 심미적인 결과로 이어질 수 있다. 만약 해당 환자의 구강 내에 건전한 제3대구치가 있고, 결손부위의 염증상태가 심각하지 않으면 건전한 제3대구치를 결손된 부위로 이식하여 치아를 재건할 수 있다. 성공적인 자가치아이이식술은 저작기능을 회복하고, 자가치아를 이용하기에 생체 친화적이며, 치조골의 흡수를 예방하는 훌륭한 치료이기 때문에 가능하기만 하다면 첫번째 치료로 충분히 고려될 수 있을 것이다. Autotransplantation is the surgical repositioning of an autogenous erupted or unerupted tooth from one site to another in the same individual. This treatment is indicated in traumatic tooth loss, teeth with severe caries, congenitally missing teeth, teeth with bad prognosis and in case of developmental anomalies of teeth. The following 2 cases describe the potential to utilize autotransplantation to replace hopeless teeth with sound wisdom teeth.
산림대기중의 부유미생물 및 CO<sub>2</sub> 분포 조사연구
송일석 ( Il-seok Song ),배용수 ( Yong-su Bae ),이용기 ( Yong-ki Lee ),민윤기 ( Yoon-ki Min ),정병환 ( Byeong-hwan Jeong ),이승원 ( Seung-won Lee ) 한국환경기술학회 2015 한국환경기술학회지 Vol.16 No.1
건강에 대한 관심이 높아지면서 도시 인근의 산을 이용하는 주민들이 기하급수적으로 증가하는 상황에서 수원시에 소재한 광교산 20개 지점을 산림지역 4지점과 등산로 16지점으로 나누어 산림대기 중의 부유세균, 부유진균, 포도상구균, 온실가스인 이산화탄소의 분포 특성에 관해 2013년 2월부터 10월까지 조사하였다. 조사결과 부유세균은 산림지역 4~3,254 CFU/㎥, 등산로 4~2,506 CFU/㎥, 부유진균은 산림지역 0~2,420 CFU/㎥, 등산로 0~1,734 CFU/㎥로 조사되었고, 포도상구균은 조사 전지점에서 검출되지 않았다. 온실가스인 이산화탄소 농도는 산림지역에서 264~477 ppm, 등산로에서 272~491 ppm으로 측정되어 계절별 편차는 있으나 다른 연구결과와 비슷한 수준을 보였다. 또한 부유세균과 온도, 습도, 이산화탄소, 피톤치드, 미세먼지, 산의 고도, 등산객 수, 그리고 부유진균과 온도, 습도, 이산화탄소, 피톤치드, 미세먼지, 산의 고도, 등산객 수와 상관관계를 조사한 결과 유의성이 없었다. This study was performed to assess based on field investigation the distribution characteristics of airborne bacteria, airborne fungi, Staphylococcus and carbon dioxide in an area of the Mt. Gwanggyo, Suwon, 20 sites, 4 forest sites and 16 trails sites, were selected for evaluation of seasonal level of airborne bacteria, airborne fungi, Staphylococcus and carbon dioxide. An on-site survey was executed between February 2013 and October 2013. Airborne bacteria concentration of forest and trails ranged from 4 CFU/㎥ to 3,254 CFU/㎥ and from 4 CFU/㎥ to 2,506 CFU/㎥, respectively. Airborne fungi concentration ranged from 0 CFU/㎥ to 2,420 CFU/㎥ in forest area and from 0 CFU/㎥ to 1,734 CFU/㎥ in trails. Staphylococcus was not detected in the survey all sites. Carbon dioxide concentration ranged from 264 ppm to 477 ppm in forest area and from 272 ppm to 491 ppm in trails. There was no significant correlation relationship between airborne bacteria, airborne fungi and various factors such as temperature, relative humidity, height, number of hiker, carbon dioxide, phytoncide and PM<sub>10</sub>.
송일석 ( Il-seok Song ),정병환 ( Byeong-hwan Jeong ),김정권 ( Jeong-kwon Kim ) 한국환경기술학회 2013 한국환경기술학회지 Vol.14 No.4
삶의 질에 대한 관심이 높아지면서 단순한 휴양공간에서 벗어나 건강의 유지, 증진 및 보건 의학적 치료차원에서 산림의 활용을 모색하기 시작하였다. 독일과 일본을 비롯한 선진국에서는 국민건강 유지 및 질병 치유를 목적으로 산림환경을 적극 활용하고 있으며, 이에 따라 숲이 지닌 보건기능에 대한 연구가 활발히 진행되고 있다. 광교산을 대상으로 피톤치드 발생량을 조사·분석한 결과, 연중 5월, 8월, 9월과 하루 중 오후 2시와 밤 10시에 발생량이 많은 것으로 나타났다. 성분 구성비는 α-pinene > β-pinene > camphene > limonene 순이었으며, 침엽수가 식재되어 있는 지점이 활엽수가 식재되어 있는 지역보다 피톤치드 농도가 높게 나타났다. As the public`s interest of quality of life increases, the research on the practical usage of forest shift from recreation purpose to therapeutic one that can maintain and promote health. Among advanced nations such as Germany and Japan, forest is actively used as a way to promote public`s health and cure diseases. As a result, the research on health promoting effects of forest is conducted frequently. By researching and analyzing the emission amount of phytoncide in the Mt. Gwanggyosan, phytoncide were most emitted 2 p.m. and 10 p.m. during the day, and in months of May, August and September. Major components ratio is α-pinene > β-pinene > camphene > limonene and the phytoncide concentration of coniferous forest is higher than broad leaved forest.
반월ㆍ시화산업단지의 화학공장을 대상으로 한 악취물질 배출특성에 관한 연구
조덕희,송일석,김인구,김웅수,김종보,김태현,황선민,남우경 한국냄새환경학회 2006 실내환경 및 냄새 학회지 Vol.5 No.4
We investigated dilution ratio values of the threshold limit (DRVTL) and 12 odorous compounds from a number of emission points (stack and process) and boundary areas of 10 chemical industries in the Ban-Woll and Shi-Wha Industrial Complex in Gyeonggi Province. The results of our study suggest that differences in odor emission concentrations are caused by such as factors as : suitability and operational conditions of prevention equipment, suitability hood of process and exhaust ventilation system, differences of raw materials of chemical industry. It was found that trimethylamine and hydrogen sulfide recorded the highest contribution from two types of emission points (stack and process), respectively. Show some actual concentration values here, hydrogen sulfide recorded its maximum values from leather industry, while trimethylamine for hexamine production industry. On the other hand, the results of dimethyl sulfide, dimethyl disulfide and methyl mercaptan were not useful, as their concentrations were not significantly high enough to judge from such respect. In the view-point of dilution ratio values of the threshold limit, the average emission ratio of stack and process from 10 chemical industries was 57, 43%, respectively. Therefore, it is important that the odor emission value from process and stack have to minimize and regulate for management of industrial odor.
황철원,송일석,김세광,오천환,김태현,정병환,박은혜,김종수,최금찬 한국환경보건학회 2019 한국환경보건학회지 Vol.45 No.5
Objectives: This study was performed to investigate the emission characteristics of aldehydes emitted by the printing industry and to evaluate their impact on adjacent residential areas. Methods: Aldehydes and THC were measured from the front of the control device in the printing and coating process. Aldehydes and ketones were measured by workplace area, residential area, and background area to evaluate their impact. Results: The concentrations of formaldehyde (<0.047 ppm) and acetaldehyde (<0.068 ppm) in the printing and coating process were relatively low, and the methyl ethyl ketone used as the primary solvent was the main carbonyl compound in the printing process. The daily mean concentrations of formaldehyde and acetaldehyde were not significantly different by workplace area, residential area, or background area. However, the concentration of methyl ethyl ketone was high in the order of workplace area, residential area, and background area. Conclusions: The concentrations of formaldehyde and acetaldehyde in the adjacent residential areas are considered to be more influenced by secondary sources of photochemical reactions than by primary sources. Methyl ethyl ketone is considered to be highly influenced by the primary source, which is printing facilities.