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Optimal Protocol for Mass Propagation of Aloe vera
이윤선,양태진,Hye Mi Park,박상언,백진홍 한국작물학회 2013 Journal of crop science and biotechnology Vol.16 No.4
We established an advanced protocol for in vitro propagation of Aloe vera via comparison of basal media, sucrose contents,growth hormone combinations, and additional supplementation with various polyamines. The maximal number and growth of shootsafter 5 weeks was obtained using MS media including 30 g L-1 sucrose supplemented with 1.0 mg L-1 BA and 0.1 mg L-1 NAA. Toimprove shoot production, various concentrations of putrescine, spermidine, and spermine were added under optimal growth hormoneconditions (MS media supplemented with 30 g L-1 sucrose, 1.0 mg L-1 BA, and 0.1 mg L-1 NAA). Maximal shoot number andgrowth after 5 weeks were achieved with supplementation of 50 mg L-1 spermidine. Regenerated plants were successfully acclimatizedin soil with 100% efficiency. Cytogenetic inspection revealed that the regenerated plants maintained intact chromosomes identicalto those of plants grown in field conditions. This protocol provides a valuable alternative for mass production of elite Aloe vera.
구체축열시스템과 외기전담공조시스템이 통합 적용된 오피스건물에서 냉방에너지 소비량 특성
이윤선,이겨레,임재한 한국건축친환경설비학회 2019 한국건축친환경설비학회 논문집 Vol.13 No.2
Thermally activated building system (TABS) has been regarded as one promising technology for energy saving and green-house gas reduction due to the efficiency improvement of a cooling/heating equipment, and feasibility of combining other promising technologies such as ground source heat pumps or cooling towers. TABS can be achieved by running hot/cold water through pipes embedded in a building’s construction. Compared to conventional HVAC systems, TABS delivers higher water temperatures for cooling, and lower water temperatures for heating due to large heat exchange areas. Furthermore, water systems have less transport energy and ductwork spaces compared to existing air systems, due to high thermal capacitance of water. Because of the surface condensation problems in hot and humid weather conditions, TABS needs to be integrated with dehumidification system such as variable air volume (VAV) system or dedicated outdoor air system (DOAS). This study aims to evaluate the cooling energy consumption characteristics of thermally activated building system (TABS) integrated with DOAS in office building compared to the TABS with VAV system. In this study, the design cooling load in office building was firstly evaluated and indoor thermal environment was discussed by considering the surface condensation risk. Finally the cooling energy consumption of TABS with DOAS was compared with TABS and VAV system operation. When the total cooling energy consumption during the cooling period is compared, it is found that the integrated operation of TABS with DOAS is 24% more energy-efficient than integrated operation of TABS with VAV. Night-time electric energy consumption accounts for 34% of the total cooling energy consumption.