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산림휴양지 유형에 따른 피톤치드(모노테르펜) 농도 비교
이용기,우정식,최시림,신은상,Lee, Yong-Ki,Woo, Jung-Sik,Choi, Si-Rim,Shin, Eun-Sang 한국환경보건학회 2015 한국환경보건학회지 Vol.41 No.4
Objectives: This study was conducted to provide scientific and effective information on phytoncides, which are associated with forest healing, and to activate recreational forests. Methods: The target sites were natural recreation forests, a forest park and an arboretum, and the control sites were three urban parks. The samples were collected at a volume of 6.0 L and a flow rate of 0.1 L/min for one hour using a low volume pump and the solid adsorbent sampling method. The phytoncide compounds adsorbed in the Tenax TA tube were analyzed by a automatic heat desorption unit and GC-MS. Results: By type of recreational forest, the annual concentrations of phytoncide (monoterpene) for the forest park showed the highest concentration with $1.450{\mu}g/m^3$, while those for the arboretum showed the lowest concentration at $0.892{\mu}g/m^3$, and thus the concentration of the forest park was approximately 1.6 times higher than the arboretum. The season showing the highest concentration of phytoncides was summer (June) and the forest park was the highest among the recreational forests. The concentrations of major components for phytoncide showed in descending order: ${\alpha}-pinene$, ${\beta}-pinene$, camphene, 3-carene and limonene. The seasonal concentration of ${\alpha}-pinene$, camphene and ${\beta}-pinene$ by type of recreational forest increased in April, which is characterized by low temperature and humidity, and the seasonal concentration of camphene decreased with higher humidity. The meteorological factors which had the high correlation with the concentration of total terpene were temperature and humidity. $CO_2$ and $O_2$ showed an inverse correlation. Conclusion: The major components of phytoncide were ${\alpha}-pinene$, ${\beta}-pinene$, camphene, 3-carene and limonene in descending order of concentration. Further and systematic study on the chemical nature of individual phytoncides, and on the effect of phytoncides on humans needs to be performed.
Hallervorden-Spatz 병 환자의 전신마취 하 치과치료 -증례보고-
이용기,서광석,김현정,염광원,안병덕,Lee, Yong-Ki,Seo, Kwang-Suk,Kim, Hyun-Jeong,Yum, Kwang-Won,Ahn, Byung-Deok 대한치과마취과학회 2007 Journal of Dental Anesthesia and Pain Medicine Vol.7 No.2
Hallervorden-Spatz disease (HSD) is a rare autosomal recessive disorder associated with excessive iron deposition in the basal ganglia. In general, HSD is characterized by onset in first two decade of life and by the presence of extra-pyramidal dysfunction including dystonia, rigidity, choreoathetosis. Other associated features include gait and posture disturbance, intellectual decline, seizure, tremor, dysarthria. These signs and symptoms are progressive. MRI is often demonstrated hypodensity in the basal ganglia which is probably suggestive of accumulation of iron. There is no specific treatment for HSD and 45% of patients die before reaching the age of 20 years. The managements directed at specific symptoms are often helpful. Especially, some surgical procedures like pallidotomy and gastrostomy are performed under general anesthesia. There is special need for careful management because of numerous anesthetic challenges like difficulty in cooperation, life-threatening airway obstruction and possibility of aspiration. We report a successful anesthetic management in a patient with HSD for dental procedures.
The Effect of Festival Environment on Tourist Satisfaction and Loyalty
Lee Yong Ki(이용기),Choong Ki Lee(이충기),Seung Gon Lee(이승곤) 한국마케팅과학회 2005 한국마케팅과학회 학술대회 발표 논문집 Vol.- No.-
This study particularly attempted to shed light on the influence of dimensions of festival environment (convenience, staff, Information, program content, facilities, souvenirs, and food) on tourists’ emotion and satisfaction. This study also investigated the Influence of festival environment on loyalty through direct effects. The results of this study showed that the four dimensions of destination image have a differential Influence on tourists’ perceptions on service quality and affect, which in tum are found to influence tourist satisfaction, intention to revisit, and willingness to recommend Korea to others directly and indirectly.
일제시기 을종 농업학교의 특성과 학생 구성 : 상주공립 농잠학교의 사례
이용기 ( Lee Yong-ki ) 국민대학교 한국학연구소 2021 한국학논총 Vol.55 No.-
이 논문은 일제시기 농업학교에 관한 연구를 사회사적 맥락으로 확장하려는 문제의식에서 출발한다. 이를 위해 3년제 을종 농업학교였던 상주공립농잠학교의 특성과 학생들의 인적 구성을 살펴보았다. 상주농잠학교는 1921년 경상북도에 두 번째로 세워진 농업학교인데, 지역사회의 적극적 참여보다는 관 주도로 설립되었다. 잠업을 특화한 학교로서 전문성을 가졌지만, 을종 학교로서의 한계가 컸기 때문에 갑종 학교로 승격되려는 시도를 계속 전개하였다. 상주농잠학교는 5년제 갑종 학교에 비하면 입학 경쟁률이 낮았으며, 반면에 졸업률은 높은 편이었다. 이는 을종 농업학교가 상대적으로 경쟁력을 갖지 못하면서도 기존 질서에 안주하는 분위기가 있었음을 의미한다. 상주농잠학교는 고연령 구조가 크게 완화되지 못한 채 지속되었고, 1920년대 중반까지도 정규 교육을 받지 못한 자들이 입학생 중에 적잖은 비중을 차지하였다. 또한 학생들의 사회경제적 배경은 극단적일 정도로 농업 편중이 심했고, 출신지 또한 경북 출신에 한정되다시피 하였다. 상주농잠학교는 대체로 학교 소재지 인근 지역의 농가에 그 영향력이 제한되었다고 볼 수 있겠다. 이처럼 3년제 을종 농업학교가 5년제 갑종 농업학교에 비해 위상과 영향력이 낮았던 사실은 일제시기 조선사회에서 학력의 위계 구조가 강하게 작동하고 있었음을 말해준다. This study starts with the purpose of expanding research on agricultural schools during the Japanese colonial period into the context of social history. To this end, the characteristics of Sangju Public Agricultural & Sericultural School(SPASS), which was a three-year term second-grade(Euljong, 乙種) agricultural school, and the personal composition of students were examined. SPASS was established in Gyeongsangbuk-do in 1921, and was founded by the government rather than active participation of the local community. As a school specializing in sericulture, it had a professionalism, but because of its limitations as an Euljong school, it continued to try to be promoted to a first-grade(Gabjong, 甲種) school. SPASS had a lower entrance competition rate compared to the five-year term Gabjong school, while the graduation rate was higher. This means that Euljong agricultural school was relatively incompetent, but had an atmosphere of conformity to the existing order. SPASS continued without much easing of the old age structure, and even in the mid-1920s, those who did not receive formal education accounted for a significant proportion of the enrolled students. In addition, the socioeconomic background of the students was extremely concentrated in agriculture, and the place of origin was limited to those from Gyeongsangbuk-do. It can be seen that SPASS has limited influence on farmhouses in the area near the school location. The fact that the three-year Euljong Agricultural School had a lower status and influence than the five-year Gabjong Agricultural School showed that the hierarchical structure of education was working strongly in Koean society during the Japanese colonial period.
이용기(Yong-Kee Lee),이동명(Dong-Myung Lee) 한국농업경제학회 2011 農業經濟硏究 Vol.52 No.1
This study examines the economic effects of production control for the rice industry where direct payments program is currently in place. Acreage control and production diversification are considered as alternative programs to cut rice production. The results show that production control in the rice market cannot increase producer price significantly under the direct payment program although market price is substantially increased, implying that its effect on producer income is not so large. Particularly, there exists high possibility that production diversification will cause significant income loss to the existing producers of the commodities diversified from rice production. An interesting result is that net welfare can be improved upon by introducing production control program such as acreage control under the existing direct payments program. The result also shows that acreage control is better than production diversification in terms of efficiency and producer income as well.