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경기도 북부지역 아파트의 지하주차장 실내공기질 변동 특성
박현구(Hyun-Ku Park),정연훈(Yeon-Hoon Jung),김병록( Byeong-Lok Kim),김진길(Jin-gil Kim),신형순(Hyung-Soon Shin),이상수(Sang-Soo Lee),오조교(Jo-Kyo Oh) 한국환경보건학회 2018 한국환경보건학회지 Vol.44 No.3
Objectives: The study examined indoor air quality during daytime and commute times in underground parking lots in five apartments located in northern Gyeonggi province. Methods: This study examined the temporal characteristics of PM 10 , CO 2 , CO, HCHO and VOCs in the indoor air quality of the underground parking lots in five apartments. concentration in daytime were ranged from 37.4 to 69.9 µg/m 3 which complied with the indoor air quality maintenance standard (200 µg/m 3 ) and Gyeonggi province ordinance standard (180 µg/m 3 ). However PM 10 concentrations in commuting time were in range of 447.3~944.0 µg/m 3 that exceeded for both criteria. The CO 2 , CO and HCHO concentrations complied with the standard. The VOCs indicated high tendency in the order of toluene, xylene, ethylbenzene and benzene. This tendency was more apparent in commuting time than daytime. Conclusion: All indoor parking lots of five apartments were equipped with ventilators. However the most apartment residents did not operate blowers to save electricity and the lack of interest for indoor air quality. In order to improve the indoor air quality of underground parking lots in apartment, operating ventilation system during commuting time is recommended.
뽕나무 接木苗에 關한 硏究 : Ⅲ.추기 굴취적기에 관하여 Ⅲ.Optimum Season for Mulberry Graftage Harvesting in Autumn
李梡周,崔營哲,金光泳,金洛相,金振吉,金漢俊,柳甲道,李種漢,林炳和,金基錫 한국잠사학회 1989 한국잠사곤충학회지 Vol.31 No.1
Experiments were conducted to investigate the optimum season for mulberry graftages harvesting before the period of natural leaf fall in autumn. Harvesting season was examined at 10 days intervals from September 30 to November 20, 1985 and 1986, at nine sites in eight provinces. The results were: 1. Diameter of graftages increased until October 30. 2. Early harvest of graftages decreased survived rate, number of shoots, and total shoot length the next spring. The October 30 harvest yielded the best growth the following spring. 3. Harvests after October 20 allowed for good survial of mulberry shoots and sprouting the following spring. 4. Total N and P in plants increased with late harvests, K decreased, and Ca content was not affected by harvest date. 5. Total N, P, and Ca were higher in stem cortex than root bark, while K appeared to be equally distributed between root and shoot bark.
李梡周,崔營哲,金振吉,李種漢,金光泳,林炳和,金漢俊 한국잠사학회 1991 한국잠사곤충학회지 Vol.33 No.1
The study was carried out to investigate the effect of ethrel (2-chloroethylphosophonic acid, 39%) on the graftages quality. Ethrel was sprayed 5 days interval from October 10 to October 30 at 6 places (Suwon (I), (II), Chungju, Kongju, Wanju, Jangsong). Spraying conentration was 1,000 ppm (400 times dilution). 1. Spray took 3.3 hrs and 500 m of ethrel on 10a eara. 2. The passed rate of graftages decreased 5~8% on the treatments earlier spray than on Octorber 20. 3. New shoot length and number of shoot of the ethrel treatments were the same as the natural leaf falling.