단정 민활(敏活) 실력파과장 - 동서양의"멋"을 지니고 …

김기연 한국사법행정학회 1960 사법행정 Vol.1 No.3

시리즈 E : MIC 기하 교과서 분석: RME 이론의 관점에서

김기연,채희진,최인선 한국수학교육학회 2003 수학교육논문집 Vol.16 No.-

공기정화기 가동에 따른 사무실 재실자들의 행동성과 입자상 오염물질의 농도 분포 관계에 관한 연구

김기연,박재범,김치년,이경종,Kim, Ki-Youn,Park, Jae-Beom,Kim, Chi-Nyon,Lee, Kyung-Jong 한국환경보건학회 2007 한국환경보건학회지 Vol.33 No.4

The reduction efficiency of air cleaner on particulate contaminants such as dust, airborne bacteria and fungi distributed in the office was relatively higher in case of office with workers than office without workers. This result would be attributed to workers' activities and physical characteristics of particulate contaminants. The air cleaner decreased a concentration of airborne bacteria more than airborne fungi, which implicates that difference of dust adsorption between airborne bacteria and fungi would affect an operation efficiency of air cleaner.

서울시 일부 지역의 대기 중 부유 진균의 분포 특성

김기연,김대근,Kim, Ki-Youn,Kim, Dae-Keun 한국환경보건학회 2012 한국환경보건학회지 Vol.38 No.5

Objectives: This study was performed to assess based on field investigation the distribution characteristics of airborne fungi in an area of Seongdong-gu, Seoul. Methods: Three sites, a living area, forest and traffic site, were selected for evaluation of monthly level of outdoor airborne fungi. An on-site survey was executed between January 2009 and December 2009. During the experimental period, air sampling was performed every month in the afternoon (2:00 pm-5:00 pm) using a cascade impactor. Results: Outdoor airborne fungi measured in Seoul, Korea over one year showed a concentration range from 850CFU $m^{-3}$ to 15,200CFU $m^{-3}$. The mean respirable fraction of outdoor airborne fungi was 67% compared to total concentration. Regardless of measurement site, there was no significant concentration difference in outdoor airborne fungi between periods of yellow dust and non-yellow dust (p>0.05). There was no significant correlation relationship between outdoor airborne fungi and atmospheric factors such as temperature and relative humidity. The predominant genera of airborne fungi identified were Aspergillus, Cladosporium, Paecilomyces and Penicillium. Conclusion: Monthly levels of outdoor airborne fungi were highest in April and November and lowest in August. In seasonal concentration distribution, the autumn showed the highest level of outdoor airborne fungi, followed by spring, summer and winter. In regional concentration distribution, the highest level of outdoor airborne fungi was generally found in the forest, followed by the living area and traffic site.

축분 퇴비화 과정 중 퇴비 부숙도를 고려한 암모니아 발생량 산정

김기연,최홍림,고한종,김치년 한국동물자원과학회 2006 한국축산학회지 Vol.48 No.1

반복 하중이 Full veneer crown의 유지력에 미치는 영향에 관한 연구

김기연,이선형,정헌영,양재호,허성주,Kim, Ki-Youn,Lee, Sun-Hyung,Chung, Hun-Young,Yang, Jae-Ho,Heo, Seong-Joo 대한치과보철학회 2000 대한치과보철학회지 Vol.38 No.5

Dislodgement of a crown or extension bridge and the loosening of a retainer of a bridge is a serious clinical problem in fixed restoration. Generally these problems are considered to be associated with deformation of the restoration. During biting, the restoration is subjected to complex forces and deforms considerably within the limit of its elasticity. Deformation of the restoration under the occlusal force induces excessive stress in the cement film, which then leads to the cement fracture. Such a fracture may eventually cause loss of the restoration. Because most of the past retention tests for full veneer crown were done without fatigue loading, they were not exactly simulating intraoral environment. And the purpose of this study was to evaluate the effect of cyclic cantilever loading on the retentive strength of full veneer crowns depending on different type of cements and taper of prepared abutment. Steel dies with $8^{\circ}\;or\;16^{\circ}$ convergence angle were fabricated through milling and crowns with the same method. These dies and crowns were divided into 8 groups. Group 1 : $16^{\circ}$ taper die, cementation with zinc phosphate cement, without loading Group 2 : $16^{\circ}$ taper die, cementation with zinc phosphate cement, with loading Group 3 : $8^{\circ}$ taper die, cementation with zinc phosphate cement, without loading Group 4 : $8^{\circ}$ taper die, cementation with zinc phosphate cement, with loading Group 5 : $16^{\circ}$ taper die, cementation with Panavia 21, without loading Group 6 : $16^{\circ}$ taper die, cementation with Panavia 21, with loading Group 7 : $8^{\circ}$ taper die, cementation with Panavia 21 without loading Group 8 : $8^{\circ}$ taper die, cementation with Panavia 21, with loading After checking the fit of die and crown, the luting surface of dies and inner surface of crowns were air-abraded for 10 seconds. The crowns were cemented to the dies, with cements mixed according to the manufacturer's recommendations. A static load of 5kg was then applied for 10 minutes with static loading device. Twenty-four hours later, group 1, 3, 5, 7 were only thermocycled, group 2, 4, 6, 8 were subjected to cyclic loading after thermocycling. Retentive tests were performed on the Instron machine. From the finding of this study, the following conclusions were obtained 1. Panavia 21 showed significantly higher retentive strength than zinc phosphate cement for all groups (p<0.05). 2. There was a significant difference in the retentive strength between $8^{\circ}\;and\;16^{\circ}$ taper for zinc phosphate cement(p<0.05), but no significant difference for Panavia 21 (p>0.05). 3. Cyclic loading significantly decreased the retentive strength for all groups(p<0.05). 4. For zinc phosphate cement, there was 35% reduction of the retentive strength after loading in the $16^{\circ}$ taper die, 25% in the $8^{\circ}$ taper die, and for Panavia 21, 21% in the $16^{\circ}$ taper die, 18% in the $8^{\circ}$ taper die.

축분 퇴비화시스템 운용방식에 따른 실내 대기오염 평가

김기연,최홍림,고한종,김치년 한국동물자원과학회 2004 한국축산학회지 Vol.46 No.2

Air quality in the livestock waste compost pilot plant at the Colligate Livestock Station was assessed to quantify the emissions of aerial contaminants and evaluate the degree of correlation between them for different operation strategies; with the ventilation types and agitation of compost pile, in this study. The parameters analyzed to reflect the level of air quality in the agitation of compost pile, in this study. The parameters analyzed to reflect the level of air quality in the livestock waste compost pilot plant were the gaseous contaminants; ammonia, hydrogen sulfide, and order concentration, the particulate contaminants; inhalable dust and respirable dust, and the biological contaminants; total airborne bacteria and fungi. The mean concentrations of ammonia, hydrogen sulfide, and odor concentration in the compost pilot plant without agitation were 2.45ppm, 19.96ppb. and 15.8 when it was naturally ventilated, and 7.61 ppm, 31.36ppb, and 30.2 when mechanically ventilated. Those with agitation were 5.50ppm 14.69ppb, and 46.4 when naturally ventilated, and 30.12ppm, 39.91ppb, and 205.5 when mechanically ventilated. The mean concentrations of inhalable and respirable dust in the compost pilot plant without agitation were 368.6㎍/㎥ and 96.0㎍/㎥ with natural ventilation, and 283.9㎍/㎥ and 119.5㎍/㎥ with mechanical ventilation. They were also observed with agitation to 208.7㎍/㎥ and 139.8㎍/㎥ with natural ventilation, and 209.2㎍/㎥ and 131.7㎍/㎥ with mechanical ventilation. Averaged concentrations of total airborne bacteria and fungi in the compost pilot plant without agitation were observed to 28,673cfu/㎥ and 22,507cfu/㎥ with natural ventilation, and 7,462cfu/㎥ and 3,228cfu/㎥ with mechanical ventilation. They were also observed with agitation to 19,592cfu/㎥ and 26,376cfu/㎥ with the natural ventilation, and 18,645cfu/㎥ and 24,581cfu/㎥ with the mechanical ventilation. It showed that the emission rates of gaseous pollutants, such as ammonia, hydrogen sulfide, and oder concentration, in the compost pilot plant operated with the mechanical ventilation and with the agitation of compost pile were higher than those with the natural ventilation and without the agitation. While the concentrations of inhalable dust and total airborne bacteria in the compost pilot plant with the natural ventilation and with the agitation, the concentrations of respirable dust and total airborne fungi in the compost pilot plant with the mechanical ventilation and agitation were higher than those with the natural ventilation and without the agitation of compost pile. It was statistically proved that indoor temperature and relative humidity affected the release of particulates and biological pollutants, and ammonia and hydrogen sulfide were believed primary malodorous compounds emitted from the compost pilot plant.

SONATA FOR VIOLIN AND PIANO : 1st Mov.

김기연 이화여자대학교 음악대학 작곡과 1969 멜로디 Vol.- No.4

암 환자의 정보요구 분석

김기연,허혜경 성인간호학회 2002 성인간호학회지 Vol.14 No.1

Purpose: To explore what particular types of information were important to patients diagnosed with cancer. Methods: Seventy three patients with cancer at an outpatient clinic and hospitalized patients in W Christian Hospital Korea, responded. The structured questionnaire developed by the investigator based on previous studies. Results: There was a significant negative relationship between age and the score of informational need (r=-.307, p<.05). Level of education, and level of monthly income were related to level of informational need. The top three informational priorities according to the time since diagnosis were 'self care during treatment', 'Health food and diet', 'Likelihood of recurrence', 'Follow up care' and 'Side effects'. The top three informational priorities for patients with breast cancer were 'Likelihood of recurrence', 'Metastasis possibility', 'Treatment options', and 'Side effects. For patients with stomach cancer, they were 'Follow up care', 'Healthy food and diet', 'Likelihood of recurrence', and 'Metastasis possibility', and for patients with colon/rectal cancer, they were 'Side effects', 'Healthy food and diet', 'Likelihood of recurrence', and 'Self care during treatment'. Conclusion: The assessment of information needs based on demographic factors and disease-related factors is critical in helping patients with cancer to manage their illness.

청국장의 생리활성물질에 관한 연구 동향과 유전공학적 접근을 통한 기능성 강화

김기연,함영태 중앙대학교 유전공학연구소 2003 遺傳工學硏究論集 Vol.16 No.1

최근에 청국장에 포함된 생리활성물질이 각종 만성퇴행성질환에 효과가 있음이 과학적으로 밝혀짐에 따라, 청국장을 기능성 건강식품으로 개발하고자하는 연구가 활발히 진행되고 있다. 청국장의 생리활성물질들은 크게 대두에 포함되어 있는 성분에서부터 청국장이 발효과정 중 protease, lipase, amylase에 의해 대두로부터 분해 되는 산물, 그리고 청국장의 발효균주 자체가 생산하는 산물들로 나누어 볼 수 있다. 따라서 본 총론에서는 현재까지 과학적으로 밝혀진 청국장에 포함된 기능성 생리활성물질 및 그 특성과 이들 생리활성물질에 대한 최근의 연구동향에 대해 알아보고, 이미 건강기능식품으로서의 자격이 충분한 청국장에 대한 최근의 연구동향에 대해 알아보고, 이미 건강기능식품으로서의 자격이 충분한 청국장에 대두로부터 청국장 발효 과정 중 균주의 가수분해 효소의 발현 양을 조절해서 생리활성물질을 다량 생산하거나 균주자체가 가지고 있는 생리활성물질을 유전공학적 응용을 통하여 대량생산 등의 유전공학적으로 기능성을 강화할 수 있는 방법을 모색하고자 한다.