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침엽수로부터 발생되는 방향성 테르펜의 배출속도 비교 연구
김조천,홍지형,강창희,선우영,김기준,임준호 한국대기환경학회 2004 한국대기환경학회지 Vol.20 No.2
In order to investigate the composition ratio and the emission rate of monoterpenes emitted from coniferous trees during summer, the enclosure chamber experiments were carried out for two tree species (Pinus densiflora and Pinus rigida). The major monoterpenes from the pine trees were α-pinene, β-pinene, myrcene and β-phellan-drene. There was no difference of the composition ratio between two sites for P. densiflora, but the difference was observed for P.rigida, Clearly, the ratio of β-pinene (26.1%) for P.rigida was higher than that of β-phellandrene (12%) at the Gumsung mountain site, but the ratio of β-phellandrene (22.2%) was higher than that of β-pinene (9.9%) at the Chiri mountain site. Particularly, the composition ratio of β-phellandrene was higher than that of β-pinene for P.densiflora, and the opposite trend was found for P.rigida at the Gumsung mountain site. The characteristics of the composition ratio between two species were similar at the Chiri mountain site. As a result of the emission rate measurements, it was observed that both sites did not show any significant β value (slope between emission rate and temperature) and ERs (Standard Emission rate at 30℃) difference. However, the β value and ERs at the Chiri mountain site were slightly greater than those of Gumsung mountain site for both pine species. P.densiflora(1.703 and 1.971㎍C/gdw/hr) showed the higher monoterpene ERs than those of P.rigida (0.572 and 0.698 ㎍C/gdw/hr) at both sites.
박지훈,이상혁,김희,이재호,박성재,지삼룡,양성연,박은택,이연재,설상영,정정명,강미선 白中央醫療院 2005 仁濟醫學 Vol.26 No.1
Fungus such as Candida albicans is a normal flora that is frequently found in the oral cavity, gastrointestinal tract, genitourinary tract, vaginal mucosa in a normal person. However, candida can cause opportunistic infection in an immune compromised host. Candidiasis has broad spectrum of disease from mucocutaneous infection to invasive or disseminated infection. But, it is rarely reported that candida is associaed with gastrointestinal tract disease in a healthy adult. The case of gastric ulcer associated with candida particularly in a health adult is reported with relevant literature.
박순길,강지우,고대용,김다희,임언미 大邱大學校 師範大學 附設 敎育硏究所 2009 學校敎育硏究 Vol.5 No.1
The purpose of this study was to investigate a study on awareness attitudes of mathematics education in elementary school. This study was conducted with 152 W elementary school of Gwang Ju, 105 H elementary school of Gyeong Ju making up 257 in total. Mean, standard deviation, t-test were done to draw out the conclusions according to different study purposes. The findings of this study were as follows; First, the awareness attitudes of mathematics education was non-significant compared to those in the male-female group. Second, it can be said that the awareness attitude of Gwang Ju toward the elementary students was more positive compared to the Gyeong Ju elementary students. Third, it can be said that the awareness attitude of mathematics attend a lecture group toward the elementary students was more positive compared to the non-mathematics attend a lecture group. 본 연구는 초등학교 3학년 학생들의 수학에 대한 인식태도를 알아보고자 하였다. 본 연구의 대상은 광주광역시 W초등학교 3학년 152명과 경주시 H초등학교 3학년 105명이며, 연구결과를 알아보기 위하여 기술통계와 t검정을 하였으며 연구결론은 다음과 같다. 첫째, 초등학교 3학년 학생들의 수학에 대한 인식태도에서 남녀 간의 차이가 나타나지 않았다. 그러므로 수학에 대한 자신감이나 흥미에서 남녀 간에 차이를 보이지 않았다. 둘째, 지역별로 대도시에 사는 초등학교 3학생들이 중소도시에 사는 초등학교 3학년 학생들보다 인지적 영역에서 차이가 있었으며, 더 긍정적인 인식을 가지고 있었다. 셋째, 수학학원에 다니고 있거나 다닌 경험이 있는 초등학교 3학년 학생들이 학원에 다니지 않은 초등학교 3학년 학생들보다 수학에 대한 인지적 영역, 정의적 영역, 전체인식태도에서 더 긍정적인 인식을 가지고 있었다.
이주엽,전지현,이태강,김선우 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1
Currently domestic criteria for the aircraft noise is being adapted WECPNL(weighted equivalent continuous perceived noise level), while internationally preferred method is L_(dn) which is originated from L_(eq) and can evaluate even environmental noise. WECPNL used in domestic as a evaluation method is only for the aircraft noise. It is, therefore, not adequate for the evaluation of residents' injury, moreover, it is very difficult to measure the aircraft noise with WECPNL due to the complicated calculating procedures as long as automatic measuring system is not used This study aims to propose alternative evaluation method for the aircraft noise. To achieve this purpose, the data measured by automatic measuring system in 5 places among domestic airports from 1998 to 2002 were gathered and calculated with three evaluation method ; WECPNL, L_(eq) and L_(dn) and the results calculated from different methods were compared and analyzed. At the same time, it was investigated problems generated from the actual operating of the automatic measuring system and that remedy was presented.