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월동무의 생장, 무기성분 조성과 광합성에 미치는 온도 상승의 영향
오순자(Soonja Oh),문경환(Kyung Hwan Moon),송은영(Eun Young Song),손인창(In-Chang Son),위승환(Seung Hwan Wi),고석찬(Seok Chan Koh) 한국원예학회 2017 원예과학기술지 Vol.35 No.1
본 연구에서는 온도구배터널을 이용하여 기온상승이 우리나라 주요 노지 채소인 월동무의 광합성, 무기성분 조성, 생장에 미치는 영향을 조사하여 겨울철 기온상승이 월동무의 생육에 미치는 영향을 예측하였다. 월동무의 생육(지상부와 뿌리의 생체중과 건물중, 초장, 뿌리의 길이와 직경)은 겨울철 대기온도에서 보다 대기온도 +4℃와 대기온도 +7℃ 조건에서 재배하였을 때 증가하였다. 그리고, 겨울철 온도가 높아졌을 때 월동무 뿌리에서는 Cu 함량이 감소하지만 K, Ca, Mg, Fe 함량은 증가하였으며, 지상부에서는 N, P, Ca, Mg, Fe의 함량이 증가하였다. 최대광합성률은 겨울철 대기온도에서 9.7μ㏖·m<SUP>-2</SUP>·s<SUP>-1</SUP>로 낮은데 반하여 대기온도 +4℃와 대기온도 +7℃ 조건에서는 각각 22.1μ㏖·m<SUP>-2</SUP>·s<SUP>-1</SUP>과 22.9μ㏖·m<SUP>-2</SUP>·s<SUP>-1</SUP>로 대기온도에서보다 2배 이상 높았다. 반면에 수분이용효율은 대기온도 +4℃와 대기온도 +7℃ 조건에서 재배하였을 때 대기온도에서보다 감소하였다. 이러한 결과는 미래의 겨울철 온도 상승이 무기염류의 흡수와 광합성의 증가를 유도하여 월동무의 생육에 우호적으로 작용하여 생산성을 높이지만 수분 요구도가 높아질 수 있음을 나타내 주고 있다. We investigated the effects of rising temperatures on the photosynthesis, mineral composition, and growth of radish (Raphanus sativus var. hortensis ) in a winter cropping system using a temperature gradient tunnel to predict the impact of rising global temperatures. Vegetative growth, including shoot and root fresh and dry weights, shoot length, and root length and diameter, was high under elevated temperatures (ambient +4℃ and +7℃) compared with ambient temperature. At elevated temperatures, the N, P, Ca, Mg, and Fe contents were high in shoots, whereas in roots, the K, Ca, Mg, and Fe contents were high and the Cu content was low. The maximum photosynthetic rates (22.1 μ㏖·m<SUP>-2</SUP>·s<SUP>-1</SUP> at ambient temperature +4℃ and 22.9 μ㏖·m<SUP>-2</SUP>·s<SUP>-1</SUP> at ambient temperature +7℃) at elevated temperatures were more than twice that (9.7 μ㏖·m<SUP>-2</SUP>·s<SUP>-1</SUP>) at ambient temperature, whereas the water use efficiency was lower at elevated temperatures. These results suggest that rising global temperatures will lead to increased mineral absorption and photosynthesis in radish in winter cropping systems, subsequently favoring plant growth, although the water requirements will be high.
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애구(艾灸)의 연소(燃燒) 특성(特性)에 관한 실험적(實驗的) 연구(硏究)(II) - 애주(艾炷)의 밀도(密度)를 중심(中心)으로 -
Park, Young-Bae,Kang, Sung-Keel,Huh, Wung 제3의학회 1996 제3의학 Vol.1 No.1
It is thought that the quantity and quality of the heat stimulation and the mechanism of heating process are important to understand the moxa-combustion. In order to get the basic data on the effective moxa-combustion method, combustion temperature changes (average temperature, peak temperature, average gradient temperature and maximum gradient temperature) of the heating period were measured respectively by the density of moxa material. For the experiment, samples of $300mg/0.26cm^3$ , $400mg/0.26cm^3$ and $500mg/0.26cm^3$ of moxa material were molded in a conical mold with each 10mm in diameter and height. 1. The average temperature and peak temperature of heating period on the moxa-combustion showed higher in the $400mg/0.26cm^3$ and $300mg/0.26cm^3$ than in the $500mg/0.26cm^3$ sample respectively. 2. The average gradient temperature of heating period on the moxa-combustion rose quickly in the $300mg/0.26cm^3$, $400mg/0.26cm^3$ and $500mg/0.26cm^3$ in that order and the maximum gradient temperature rose more quickly in the $300mg/0.26cm^3$ and $400mg/0.26cm^3$ than in the $500mg/0.26cm^3$ sample respectively. According to the above results, it is concluded that the density of moxa material is (the) more important (factor) than <either> the weight or volume of moxa material on the combustion temperature changes of the heating period for the evaluation of the quality and quantity of moxa-combustion.
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艾灸의 燃燒 特性에 관한 實驗的 硏究(Ⅱ) : 艾炷의 密度를 中心으로 On the Density of Moxa Material
朴英培 현곡학회 1996 제3의학 Vol.1 No.1
It is thought that the quantity and quality of the heat stimulation and the .mechanism of heating process are important to understand the moxa-combustion. In order to get the basic data on the effective. moxa-combustion method, combustion temperature changes (average temperature, peak temperature, average gradient temperature and maximum gradient temperature) of the heating period were measured respectively by the density of moxa material. For the experiment; samples of 300mg/0.26cm3 , 400mg/0.26cm3 and 500mg/0.26cm3 of rioxz material were molded in a 'conical mold with each 10mm in diameter and height. 1. The average temperature and peak temperature of heating period on the moxa-combustion showed higher in the 400mg/0.26cm3 and 300mg/0.26cm3 than in the 500mg/0.26cm3 sample respectively. 2. The average gradient temperature of heating period on the moxa-combustion rose quickly in the 300mg/0.26cm3, 400mg/0.26cm3 and 500mg/0.26cm3 in that order and the maximum gradient temperature rose more quickly in the 300mg/0.26cm3 and 400mg/0.26cm3 than in the 500mg/0.26cm3 sample respectively. According to the above results, it is concluded that the density of moxa material is (the) more important (factor) than <either> the weight or volume of moxa material on the combustion temperature changes of the heating period for the evaluation of the quality and quantity of moxa-combustion.
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DPF 특성이 강제재생시 DPF 내부온도에 미치는 영향에 관한 연구
박찬엽(Chanyoub Park),최형수(Hyungsu Choi),심우찬(Woochan Sim),이홍철(Hongchul Lee),김경운(Kyungwoon Kim),천승호(Sungho Cheon),한대곤(Daegon Han) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
The effect of DPF characteristics, such as material and cell density, on the internal temperature of DPF during active regeneration was investigated by using DPF test rig. DPF was regenerated by direct fuel injection into the exhaust gas in the upstream of DOC and exhaust gas in front of DPF was heated up to 650℃ by controlling the quantity of injected fuel. Because thermal conductivity of SiC DPF is superior to that of cordierite DPF, radial thermal gradient and maximum DPF temperature of SiC DPF was much lower than those of cordierite DPF during active regeneration in case of the same soot loading and cell density condition. However, the difference of cell density in SiC DPF had little effect on thermal properties during active regeneration. That means that the material of DPF is a key factor to influence thermal properties of DPF during regeneration.
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