• 한국작물학회지
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• 제38권4호
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• pp.330-335
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• 1993

참깨품종의 온도와 일장에 따른 항산화성분 함률차이를 조사하여 참깨 재배기술개선에 필요한 기초자료를 얻고자 무분지형 단백깨와 수원깨 및 분지형 안산깨와 한섬깨를 공시하여 작물시험장 인공기상실에서 온도와 일장을 달리 처리하여 시험하였던 바 얻어진 결과를 요약하면 다음과 같다. 1. 일장과 온도처리에 따른 참깨 항산화함량의 품종간 차이가 있었다. 2. 온도의 차이에 따라 20/15$^{\circ}C(주간온도/연간온도)에서 sesamin 0.22%, sesamolin 0.16% 인데 비하여 30/25$^{\circ}C에서는 sesamin 0.28%, sesamolin 0.19%를 보여 저온조건 보다는 고온조건에서 항산화 성분함량이 높았다. 3. 일장의 차이에 따라 11시간 일장에서 sesamin 0.24%, sesamin 0.26%, sesamolin 0.20%와 큰 차이가 없었다. 4. 따라서 참깨 항산화성분 함량은 일장의 길이보다는 온도의 차이에 의해 크게 영향 받는 것으로 생각된다.

• 한국작물학회지
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• 제31권4호
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• pp.420-425
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• 1986

Br, 21을 공시하여 급건엽이 발생하는 환경조건을 구명하기 위하여 온습도를 시험 I과 II로 구분하여 시험 I은 주간의 온습도를 달리하고 야간은 휴건하였으며, 시험 II는 황변 이후에 주야간 동일한 온습도를 건조상 내에서 각기 달리 조사하여 처리하였던 바 그 결과를 요약하면 다음과 같다. 1. 급건엽발생은 고온 저습에 의해 과도한 탈수로 발생되었다. 2. 야간은 휴건하고 주간은 습도 75~80%일 때35$^{\circ}C$ 이하에서는 급건엽이 거의 기생되지 않았다. 3. 주야간 온습도가 일정할 경우 3$0^{\circ}C$는 75~80%, 35$^{\circ}C$는 80~85%, 4$0^{\circ}C$는 85~90%로 온도가 상승할수록 습도를 더 높여야 급건엽이 발생되지 않았다. 4. 급건엽발생이 많을 수록 물리성이 불량하였고, 내용성분이 충분히 분해되지 않았다.

• 한국대기환경학회지
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• 제13권2호
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• pp.161-170
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• 1997

The concentrations of dimethylsulfide (DMS) were determined using samples collected from a station located at Kosan, Cheju Island during two field campaigns held in December 1996 and January 1997. The atmospheric DMS concentrations measured at 6-hr intervals during the entire campaign periods, after excluding a few extreme values, spanned in the range of 14 to 410 pptv with mean and 1 SD value of 127 $\pm$ 94 pptv (N=42). Between two month periods during which the field campaigns were conducted, a notable reduction in DMS levels was observed which was comparable to the dramatic shift in air temperature. A considerable difference was also noted in DMS levels, when data were grouped by day/night basis. The cause of unexpected, high day-to-night DMS ratios is best explained in terms of high efficiency of daytime source processes relative to low efficiency of nighttime sink processes due to the characteristics of the study location. The surface water DMS of the study site, although scarcely measured, also behaved similarly to its atmospheric counterpart with its range from 0.3 to 19 nM (N=11). When correlation analysis was conducted between the atmospheric DMS concentration and other concurrently determined parameters, significant correlations were observed from most basic meteorological parameters such as windspeed, relative humidy, and air temperature. However, the existence of "not-so-strong" correlations between air temperature and DMS concentrations relative to other ones indicated that the effect of temperature on DMS behavior must be reflected in more complicated manners at the study site. The sea-to-air flux of DMS was approximated through an application of the mass-balance flux calculation method of Wylie and de Mora (1996) under the assumption that sink mechanism within the marine boundary layer is in steady-state condition with its counterpart, source mechanism. Based on this estimation method, we reached a conclusion that oceanic DMS emitted from the southwest sea of the Korean Peninsula can amount to approximately 9 $\sim$ 36 Gg S $yr^{-1}$.$yr^{-1}$.

• Plant Breeding and Biotechnology
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• 제1권1호
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• pp.1-8
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• 2013

Low-temperature stress is an important factor controlling the growth and development of rice (Oryza sativa L.) in temperate region. In this study, a molecular linkage map consisting of 136 SSR markers was employed to identify QTL associated with cold tolerance at the seedling stage. 80 recombinant inbred lines (RILs) from an intersubspecific cross between Milyang23 (O. sativa ssp. Indica) and Hapcheonaengmi3, a japonica weedy rice and the parents were evaluated for leaf discoloration and SAPD value of seedlings. Rice plants were grown for 15 days in the low-temperature condition (13/20℃ day/night) and the control condition (25/20℃ day/night) in the growth chamber. The degree of leaf discoloration showed a highly significant correlation with the SPAD value in the low-temperature plot (r = -0.708, P < 0.0001). A total of four QTLs for SPAD were identified and the phenotypic variance explained by each QTL ranged from 5.4 to 16.0%. Two QTLs detected in the control condition were located on chromosomes 2 and 5, respectively. Two QTL on chromosomes 1 and 4 were detected at the low-temperature condition and Hapcheonaengmi3 alleles increased the SPAD values at these loci. Substitution mapping was conducted to delimit the position of qSPA-4 using introgression lines derived from the same cross. Results indicated that qSPA-4 was located in a 810-Kb region flanked by RM16333 and RM16368. The results indicated that Hapcheonaengmi3 contains QTL alleles that are likely to improve cold tolerance of Indica rice.

• 생물환경조절학회지
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• 제28권4호
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• pp.396-403
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• 2019

본 논문에서는 생분해성 종이포트를 이용한 오이 접목묘 육묘시 추비용 양액의 농도와 육묘일수, 정식 후 야간 온도에 따른 오이의 생육을 검토하였다. 오이 종이포트묘 접목활착 종료 후 육묘 중 시비 농도를 0.5S(EC $0.8dS{\cdot}m^{-1}$), 1.0S(EC $1.6dS{\cdot}m^{-1}$), 2.0S(EC $3.2dS{\cdot}m^{-1}$)의 3수준으로 처리한 뒤, 육묘일수를 파종 후 26, 33, 40, 47일로 달리하여 정식하였다. 정식 직후 야간 온도를 10, 15, $25^{\circ}C$ 3수준으로 조합, 처리하여 10일 동안 재배하였다. 육묘기간 중 오이 종이포트묘의 초장, 엽수, 엽면적, 건물중, 및 상대생장률은 추비용 양액의 농도가 높아질수록 증가하였으며, 육묘일수가 경과할수록 처리에 따른 차이는 더 커졌다. 건물률은 육묘일수가 경과함에 따라 증가하는 경향을 보였으나, 양액의 농도가 높을수록 낮았다. 반면 비엽면적은 육묘일수가 길어질수록 감소하였고, 양액 농도가 높을수록 높은 값을 나타냈다. 정식 10일 후 오이의 생육은 육묘일수가 증가할수록 초장, 엽면적, 건물중에 있어서 높은 값을 나타냈으나, 상대생장률은 감소하였다. 육묘일수 26일, 30일의 경우 정식 후 오이의 생육은 야간 온도의 영향이 크지 않았으나, 육묘일수가 길어져 40일이상 육묘한 묘는 정식 후 $10^{\circ}C$ 정도의 저온에서 활착이 지연되어 생육이 저조하였다. 따라서 오이 종이포트 접목묘 생산시 추비용 양액농도 1S, 육묘일수는 30일 내외가 추천되며, 정식 후 활착 및 생육 촉진을 위해 $15-25^{\circ}C$ 범위의 야간온도 관리가 요구된다.

• 한국환경과학회지
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• 제12권7호
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• pp.697-704
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• 2003

Through data analysis using the meteorological data during 40 years(1961∼2000) for 2 stations(Daegu and Chupungnyong), we studied the present condition and long-term trends in urban climatic environments of Daegu. It was found that there was about 1.5$^{\circ}C$ rise in annual mean temperature of Daegu from 1961 to 2000. On the other hand, that of Chupungnyung was not more than 0.4$^{\circ}C$ for the same period. The regional disparity in temperature changes has been caused by the difference of urban effects on climate between two regions. In particular, the urban warming appears more significant in winter season. There was about 3$^{\circ}C$ rise in annual mean daily minimum temperature of winter season(Dec.∼Feb.) in Daegu. As the result, the number of winter days continuously decreased from 115 days(1961) to 75 days(2000). The long-term trends of relative humidity were also studied to exame the effects of urbanization on climate in Daegu. It was found that there was about 7% decrease in relative humidity of Daegu during past 40 years(1961∼2000). On the other side, the decrease of Chupungnyung was not more than 2% for the same period. The long-term trends of the other climatic factors(fog days, tropical night days, etc) were also studied in this study.

• 한국환경과학회지
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• 제31권12호
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• pp.1027-1038
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• 2022

The intertidal zone has both land and marine characteristics and shows complex weather environments. These characteristics are suited for studying climate change, energy balance and ecosystems, and may play an important role in coastal and marine weather prediction and analysis. This study was conducted at Odo Island, approximately 300m from the mainland in Yeosu. We built a weather observation system capable of real-time monitoring on the mud flat in the intertidal zone and measured actual weather and marine data. Weather observation was conducted from April to June 2022. The results showed changes in air temperature and water temperature with changes in the tide level during spring. Correlation analysis revealed characteristic changes in air temperature and water temperature during the day and night, and with inundation and exposure.

• Journal of Korean Neurosurgical Society
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• 제65권1호
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• pp.151-160
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• 2022

Continuous monitoring of intracranial pressure is a well established medical procedure. Still, little is known about long-term behavior of intracranial pressure in normal pressure hydrocephalus. The present study is designed to evaluate periodicity of intracranial pressure over long-time scales using intraventricular pressure monitoring in patients with normal pressure hydrocephalus. In addition, the circadian and diurnal patterns of blood pressure and body temperature in those patients are studied. Four patients, selected with "probable" normal pressure hydrocephalus, were monitored for several dozen hours. Intracranial pressure, blood pressure, and body temperature were recorded hourly. Autocorrelation functions were calculated and cross-correlation analysis were carried out to study all the time-series data. Autocorrelation results show that intracranial pressure, blood pressure, and body temperature values follow bimodal (positive and negative) curves over a day. The cross-correlation functions demonstrate causal relationships between intracranial pressure, blood pressure, and body temperature. The results show that long-term fluctuations in intracranial pressure exhibit cyclical patterns with periods of about 24 hours. Continuous intracranial pressure recording in "probable" normal pressure hydrocephalus patients reveals circadian fluctuations not related to the day and night cycle. These fluctuations are causally related to changes in blood pressure and body temperature. The present study reveals the complete loss of the diurnal blood pressure and body temperature rhythmicities in patients with "probable" normal pressure hydrocephalus.

• 생물환경조절학회지
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• 제7권4호
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• pp.311-323
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• 1998

현재 경북지방의 수박 및 참외재배에 가장 많이 이용되고 있는 대형터널 하우스의 온도 변화를 분석한 결과, 터널하우스 내 기온은 일몰과 함께 강하하여 외기온과 비슷한 온도를 유지하는 시간은 일몰 후 약 2시간 30분 전후로 나타났으며, 자연환기장치인 환기공 및 수동식 측창이 설치되어 재배기간중 하우스내 최고기온은 4$0^{\circ}C$ 이상 유지되지는 않았다. 하우스야간온도는 높이별 위치에 관계없이 거의 같은 온도로 유지되었으며, 재배기간중 야간온도는 외기온보다 2~3$^{\circ}C$정도 높게 유지할 수 있었지만, 외기온이 적온 이하일 때는 보온의 필요성이 있었다. 또 재배기간중 20cm 깊이의 지온은 2$0^{\circ}C$ 이상을 유지할 수 있어서 적정지온 확보에는 문제가 없었으며, 일변동폭은 3~5$^{\circ}C$ 정도이고 관수로 인한 지온저하는 5~6$^{\circ}C$ 정도였다

• 한국지리정보학회지
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• 제17권3호
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• pp.132-146
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• 2014

본 연구에서는 부산(Busan)에 설치된 자동기상관측망(AWS)과 국립수산과학원에서 관측하는 부산(Busan)과 기장(Gijang)지점의 해수면온도(SST)자료를 활용하여 부산(Busan)지역의 연안에서 발생하는 대규모 냉수대에 의해 형성된 차가워진 냉기가 도시기온에 미치는 영향을 살펴보았다. 첫째, 냉수대가 발생한 날(cold water)은 연안지역과 도심지역의 기온차가 약 $1^{\circ}C$이상 나타났으며, 냉수대가 발생하지 않은 날(non cold water)은 연안지역과 도심지역의 기온차가 약 $0.5^{\circ}C$로 냉수대가 발생한 날(cold water)보다 낮은 기온차를 보였다. 둘째, 주간의 경우 냉수대가 발생한 날(cold water)은 연안지역이 도심에 비해 약 $1^{\circ}C$ 정도 낮았다. 반면 냉수대가 발생하지 않은 날(non cold water)은 연안지역과 도심의 기온차가 약 $0.4^{\circ}C$로 냉수대가 발생한 날(cold water)에 비해 낮은 분포 차를 보였다. 반면 야간의 경우는 냉수대가 발생한 날(cold water)의 연안지역이 도심에 비해 약 $1.2^{\circ}C$, 냉수대가 발생하지 않은 날(non cold water)은 연안지역이 도심에 비해 약 $0.9^{\circ}C$ 낮았다. 야간의 기온은 주간의 기온에 비해 냉수대 발생 유 무에 상관없이 높은 기온차를 보였다.