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한국 중,고등학생의 비만지수, 체력, 심혈관계위험도와의 관련성
송홍선 ( Hong Sun Song ),고병구 ( Byung Gu Ko ),김광준 ( Kwang Jun Kim ),박세정 ( Se Jung Park ),정진욱 ( Jin Wook Jung ),최문정 ( Mun Cheong Choi ),이기혁 ( Kihyuk Lee ) 한국스포츠정책과학원(구 한국스포츠개발원) 2015 체육과학연구 Vol.26 No.3
The purpose of this study was to examine the relationship of obesity index, fitness and cardiovascular risk index in middle and high school students. Obesity index, fitness score and cardiovascular risk index were measured from 1,044 middle and high school students. The results of relation between obesity index and fitness showed that the higher obesity index had significantly lower fitness score for both boys and girls (boys: p<0.001, girl: p<0.05) The results of relation between obesity index and cardiovascular risk index indicated that the higher obesity index had significantly higher cardiovascular risk index for both boys and girls (boys: p<0.001, girl: p<0.001). Moreover, The lower fitness index showed significantly higher cardiovascular risk index regardless of gender in middle school students (boys: p<0.001, girl: p<0.01). Therefore, the results of this study indicated that obese adolescents had the lower fitness level and high possibility of cardiovascular risk. The purpose of this study was to examine the relationship of obesity index, fitness and cardiovascular risk index in middle and high school students. Obesity index, fitness score and cardiovascular risk index were measured from 1,044 middle and high school students. The results of relation between obesity index and fitness showed that the higher obesity index had significantly lower fitness score for both boys and girls (boys: p<0.001, girl: p<0.05) The results of relation between obesity index and cardiovascular risk index indicated that the higher obesity index had significantly higher cardiovascular risk index for both boys and girls (boys: p<0.001, girl: p<0.001). Moreover, The lower fitness index showed significantly higher cardiovascular risk index regardless of gender in middle school students (boys: p<0.001, girl: p<0.01). Therefore, the results of this study indicated that obese adolescents had the lower fitness level and high possibility of cardiovascular risk.
김건엽(Gun-Yeob Kim),서상욱(Sang-Uk Suh),고병구(Byung-Gu Ko),정현철(Hyun-Cheol Jeong),노기안(Kee-An Roh),심교문(Kyo-Moon Shim) 한국토양비료학회 2008 한국토양비료학회지 Vol.42 No.6
Importance of climate change and its impact on agriculture and environment has increased with the rise Green House Gases (GHGs) concentration in the atmosphere. To slow down the speed of climate change many efforts have been applied in industrial sectors to reduce GHGs emission and to enhance carbon storage. In agricultural sector, many researches have been performed on GHGs emission reduction, but few on the role of carbon sink. In this study, we investigated carbon balance and soil carbon storage in agricultural field in the barley-red pepper and barley-soybean cropping system. With the system for automatic measuring of carbon dioxide, net ecosystem production(NEP) was estimated to be 6.3 ton CO2 ha<SUP>-1</SUP> for N-P-K chemical fertilizer treatment plot and 10.6 ton CO2 ha<SUP>-1</SUP> for N-P-K chemical fertilizer with swine manure treatment plot in the barley-soybean rotation cropping. In the barley-red pepper rotation cropping, it was 12.0 ton CO2 ha<SUP>-1</SUP> for N-P-K chemical fertilizer treatment plot and 13.2 ton CO2 ha<SUP>-1</SUP> for NP-K chemical fertilizer with swine manure treatment plot. Soil carbon storage rate was estimated to be 0.7 ton C ha<SUP>-1</SUP> for the barley-soybean cropping system and 0.5 ton C ha<SUP>-1</SUP> for barley-pepper cropping system. In appeared that agricultural lands may contribute to the greenhouse effect as a potential carbon sink preserving carbon into soil.
고추재배에서 토성별 토양수분, 토양온도, 무기태 질소 변화에 따른 온실가스배출 평가
김건엽(Gun-Yeob Kim),송범헌(Beom-Heon Song),노기안(Kee-An Roh),홍석영(Suk-Young Hong),고병구(Byung-Gu Ko),심교문(Kyo-Moon Shim),소규호(Kyu-ho So) 한국토양비료학회 2008 한국토양비료학회지 Vol.42 No.6
Importance of climate change and its impact on agriculture and environment has increased with a rise of greenhouse gases (GHGs) concentration in Earth"s atmosphere, which had caused an increase of temperature in Earth. Greenhouse gas emissions such as methane(CH4) and nitrous oxide(N2O) in the field need to be assessed. GHGs fluxes using chamber systems in the fields(2004~2005) with pepper cultivation were monitored at the experimental plots of National Academy of Agricultural Science(NAAS), Rural Development Administration(RDA) located in Suwon city. N2O emission during pepper growing period was reduced to 74.0~82.1% in sandy loam soil compared with those in clay loam soil. Evaluating N2O emission at different levels of soil water conditions, N2O emission at -50 kPa were lowered to 13.2% in clay loam soil and 40.2% in sandy loam soil compared with those at -30 kPa. CH4 emission was reduced to 45.7~61.6% in sandy loam soil compared with those in clay loam soil. Evaluating CH4 at different levels of soil water conditions, CH4 emission at -50 kPa was lowered to 69.6% in clay loam soil and 55.8% in sandy loam soil compared with those at -30 kPa. It implied that -50 kPa of soil water potential was effective for saving water and reducing GHG emissions. From the path analysis as to contribution factors for N2O emission, it appeared that contribution rate was in the order of mineral N(51.2%), soil temperature (25.8%), and soil moisture content(23.0%) in clay loam soil and soil moisture content(39.3%), soil temperature (36.4%), and mineral N(24.3%) in sandy loam soil.