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Shim, Sang Chil,U., Zang Kual,Kim, Chung Kie,Park, Woo Chul 한국토양비료학회 1972 한국토양비료학회지 Vol.5 No.2
본실험은 유수형성기에 2일간 배수할 때 질소질 비료의 비종(유안과 요소) 및 시용시기(이앙기와 유수형성기)가 수도의 질소이용율에 미치는 영향을 보기 위해서 기후와 토양이 상이한 부산(동아대학교 농과대학 포장)과 서울(방사선 농학연구소 농장, 금곡)에서 농광 및 봉광 두품종을 사용해서 1970년에 실시 되었다. 유수 형성기에 2일간 배수하고 질소질 비료를 시용한 처리는 상시 담수구에 비해서 A-Value에 있어서 유의차가 없었으나 비료의 시용시기나 비종간에는 뚜렸한 차이가 있었다. 유수형성기에 추비하는것이 이앙기에 기비로서 시용하는 것 보다 자실에서 본 비료의 이용율이 4~5배 높았다. 자실의 질소함량은 봉광의 것이 실험지역에 관계없이 농광의 것보다 높았으며, 비료 이용율도 높은 경향을 나타내었다. 부산토양에서의 질소의 A-Value가 품종이나 비종에 관계없이 서울의것 보다 항상 높았던 것은 부산 토양의 질소함량이 높은데 기인하는 것으로 생각된다.
Kim, Min Jeong,Jung, U Suk,Jeon, Seung Woo,Lee, Jae Sung,Kim, Won Seob,Lee, Sang Bum,Kim, Youn Chil,Kim, Bae Young,Wang, Tao,Lee, Hong Gu Asian Australasian Association of Animal Productio 2016 Animal Bioscience Vol.29 No.12
This study was conducted to examine the effects of adding phytoncide oil extracted from Korean pine nut cone by-product to the diet of dairy cows on milk yield and compositions, fatty acid characteristics, complete blood count and stress response. A total of 74 Holstein cows were used for 30 days and divided into two groups. Each group was given a basal diet (C) or an experimental diet containing phytoncide additives at 0.016% (T) in feed. The results showed that phytoncide feeding had no effect on milk yield. In addition, there were no observed effects on milk composition, but the ratio of fatty acid in milk was significantly affected by the phytoncide diet, and it showed a positive effect. Not only were the major functional fatty acids, conjugated linoleic acid and eicosapentaenoic acid increased, but also ${\omega}6:{\omega}3$ fatty acid ratio was reduced in milk of T group (p<0.05). In blood analysis, the complete blood count showed no significant difference between C and T group on all parameters. However, the cortisol concentration was significantly decreased in T group compared to control (p<0.05). Taken together, we suggest that phytoncide oil does not have a great influence on the physiological changes, but can be a potential feed additive that improves the milk fatty acid and stress resilience in dairy cows. In addition, it will contribute to the development of feed resource, a reduction in feed cost and a lessening of environmental pollution.
서울지역 고등학교 건물의 에너지소비특성에 관한 사례분석
김성범(Kim Sung-Bum),오병칠(Oh Byung-Chil),신우철(Shin U-Cheul) 한국태양에너지학회 2016 한국태양에너지학회 논문집 Vol.36 No.6
In this study, we analyzed five-year(2011~2015) data for D high school in Seoul area to analyze energy consumption characteristics in high school. The results are summarized as follows. (1) In the result of comparison analysis about 2015 energy consumption by usage, based on primary energy, 18% of energy was consumed in cafeteria, and 82% was consumed in main building. In the case of main building, base and constant load excepting hot water supply in restroom took 40%, heating including freeze protection took 20%, hot water supply in restroom took 14%, and cooling took 8% in order. (2) In the 2015 total energy consumption in D high school based on primary energy, heating energy takes 28%. The range and limit of energy savings coming from the reinforcement of insulation and window performance could be estimated. (3) To introduce new & renewable energy system in high school, electricity-based system is suitable than heat-based system because usage of electric energy is larger than that of heat energy in high school. (4) Five-year energy consumption unit according to heating degree-day showed a linearly increasing trend, and the coefficient of determination(R2) was 0.9763, which means high correlation.
김종현(Kim Jong-Hyun),오병칠(Oh Byung-Chil),신우철(Shin U-Cheul),백남춘(Baek Nam-Choon) 한국태양에너지학회 2006 한국태양에너지학회 학술대회논문집 Vol.- No.-
The purpose of this paper is to investigate the application of solar thermal systems to the apartment. The calculation was performed for two systems: solar hot water system and solar space heating system. And the simulation was carried out using the thermal simulation code TRNSYS, of which results were verified the its reliability by the experimental ones. As a result, it was anticipated that the solar space heating can apply to two households with 105 square meters and the solar hot water system can supply about 55% of hot water load for nine household applications.
Chemiluminescent Properties of Fluorene- and Carbazole-Containing Polymeric Fluorophores
이칠원,이희우,김철희,강명선,Lee, Chil Won,Lee, Hui U,Kim, Cheol Hui,Gang, Myeong Seon Korean Chemical Society 2000 Bulletin of the Korean Chemical Society Vol.21 No.7
Fluorene and carbazole-containing distyrylarylene model and polymeric fluorophores were prepared by reacting 2,7-dibromo-9-butylfluorene and 3,6-dibromo-9-butylcarbazole with styrene and divinylbenzene using the Heck reaction for the chemiluminesc ence. The UV-vis absorbance, photoluminescence (PL) as well as the chemiluminescence (CL) characteristics of the model and polymeric fluorophores were measured. Sodium salicylate-catalyzed reaction of bis(2,4,6-trichlorophenyl)oxalate (TCPO) with hydrogen peroxide produced a strong chemiluminescent blue light emission with 439-489 nm in the presence of the fluorophore. The wave-length of CL light was similar to that of photoluminescence. The chemiluminescent intensity was decayed according to the exponential equation.The glow of CL maintained more than 12 hr and was visible with naked eye.