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윤광식 ( Yoon Kwang-sik ),한국헌 ( Han Kuk-heon ),최수명 ( Choi Soo-myung ),남상식 ( Nam Sang-sik ),이용직 ( Lee Yong-jik ),김진택 ( Kim Jin-taek ) 한국농공학회 2002 한국농공학회 학술대회초록집 Vol.2002 No.-
In order to investigate effect of irrigation on soil moisture and soybean growth, a experimental plot, which was shielded from precipitation was established. Four different irrigation rates were applied and soil moisture variations were monitored with TDR. Soybean yield and product quality are under scrutiny.
윤광식(Kwang Sik Yoon),한국헌(Kuk Heon Han),최진규(Jin Kyu Choi),구자웅(Ja Woong Koo),손재권(Jae Gwon Son),조재영(Jae Young Cho),조진구(Jin Goo Cho) 한국농촌계획학회 2002 농촌계획 Vol.8 No.1
A study was carried out to investigate the losses of sediment at a paddy plot located at the southern Korea. The observed amount of precipitation, irrigation, runoff for the experimental paddy plot during the cropping period were 1,030, 566, and 701 mm in 1999 and 1,214, 413, and 710 mm in 2000, respectively. The observed sediment losses from the plot during cropping period were 1,221.3 kg ha^-1 in 1999 and 1,274 kg/ha kg ha^-1 in 2000, respectively.
양수장 지구 광역논으로부터 영농기간 영양물질의 유출 및 물질수지
윤광식(Kwang Sik Yoon),한국헌(Kuk Heon Han),조재영(Jae Young Cho),최창현(Chang Hyun Choi),손재권(Jae Gwon Son),최진규(Jin Kyu Choi) 한국농촌계획학회 2002 농촌계획 Vol.8 No.1
The study was carried out to investigate the water balance and losses of nutrients from paddy fields during cropping period. The size of paddy fields was 95 ha and the fields were irrigated from a pumping station. The runoff loading was the highest in June because of the high concentrations of nutrients due to applied fertilizer. When the runoff losses of nutrients were compared to applied chemical fertilizer, it was found that 39.1 % to 42.5 % of nitrogen lost via runoff while runoff losses of phosphorus account for 14.5 % to 17 % of the total applied amount during cropping period. When the ratio was calculated between nutrients losses by infiltration and the applied of chemical fertilizer, two year results showed 9.1 % to 10.8 % for nitrogen and 0.5% for phosphorus, respectively.
논에서의 일주기 수질 조사로부터 유도된 오염물질의 강우 -유출 사상별 유량가중평균농도와 유출량- 유하부하량 관계
윤광식 ( Yoon Kwang Sik ),최진용 ( Choi Jin-yong ),한국헌 ( Han Kuk Heon ),조재영 ( Cho Jae Young ) 한국농공학회 2002 韓國農工學會誌 : 전원과 자원 Vol.44 No.5
Water quality samples were taken for every two hours whenever runoff occurred by rainfall to investigate concentration variations of T-N, T-P and SS during runoff process from a paddy field. The difference between the highest concentration in a runoff event and flow weighted mean concentration for T-N, T-P, SS placed between 3.07∼40.16%, 11.44∼60.80%, and 15.11∼64.5%, respectively. The difference between the lowest concentration in event and event mean concentration for T-N, T-P, SS ranged between -7.24∼-31.84%, -11.59∼-47.86%, and -5.21∼-36.20%, respectively. The relationship between runoff and mass load was derived for each storm event using observed data. The relationship between runoff and mass load showed linear relationship regardless of water quality constituents and rainfall amount. The results suggested that relationship between T-N and T-P loads and runoff should be prepared separately in considering of fertilization effect and seasonal conditions. The relationship between SS and runoff should be made to reflect seasonal conditions and tillage effect.
봉독약침 시술 후 발생한 봉독 과민반응에 대한 임상고찰
윤광식 ( Kwang Sik Yoon ),조은 ( Eun Cho ),강재희 ( Jae Hui Kang ),이현 ( Hyun Lee ) 대전대학교 한의학연구소 2012 한의학연구소 논문집 Vol.21 No.1
Objective : The purpose of this report is to introduce hypersensitivity reaction of bee venom pharmacopuncture, and remind caution when use bee venom pharmacopuncture. Methods : After skin test, we were treated with bee venom pharmacopuncture to severe lower back pain and facial palsy patients depending on the state of the individual. After the treatment, bee venom hypersensitivity reaction was appeared, and we retreated hypersensitivity reaction depending on progress. Result & Conclusion : Hypersensitivity reaction of bee venom appears as various symptoms depending on the patient`s condition, procedure amount and procedure point. We might reinforce skin test, and remind caution when use bee venom pharmacopuncture.
윤광식 ( Yoon Kwang Sik ),최진규 ( Choi Jin Kyu ),구자웅 ( Goo Ja Woong ),손재권 ( Son Jae Gwon ),조재영 ( Cho Jae Young ) 한국농공학회 2001 한국농공학회 학술대회초록집 Vol.2001 No.-
Runoff, sediments and nutrient losses were studied under different patterns of paddy field management: (1) fall and spring plowing (PL); (2) fall plowing for half of plot and spring plowing (SPL); (3) no-till for fall and spring plowing (NPL) during the non-cropping period in the southern Korea. Sediment losses from PL plot were 25% more than those from NPL plot. There was significant difference in nutrient losses via runoff water and sediment according to plowing practice (P < 0.01) Losses of total-N, ammonia-N, nitrate-N, total-P from NPL plot were larger than PL and SPL plots during study period. Sediment and total-P losses from SPL plot were close to those of PL plot.
윤광식 ( Yoon Kwang-sik ),최수명 ( Choi Soo-myung ),한국헌 ( Han Kuk-heon ),조재영 ( Cho Jae-young ) 한국농공학회 2002 한국농공학회 학술대회초록집 Vol.2002 No.-
A subwatershed within Juam Lake was monitored to identify hydrologic and water quality characteristics. Rainfall record was collected and flow rate measurement and water quality sampling were conducted periodically at the watershed outlet. Hydrologic response and pollutant load characteristics were analyzed based on observed data.
윤광식 ( Yoon Kwang-sik ),한국헌 ( Han Kuk-heon ),윤석군 ( Yoon Suk-gun ),정재운 ( Jung Jae-woon ) 한국농공학회 2003 한국농공학회 학술대회초록집 Vol.2003 No.-
The Water resources utilization pattern of Jangsung reservoir was studied. The observed precipitation and existing reservoir operation data such as irrigation amount, reservoir storage, river maintenance requirement, flood control discharge were collected for ten years period and analyzed. Major findings of this study are as follows: The observed average, minimum, maximum annual precipitation were 905.1mm, 1,977.3mm, 1,554.3mm during study period, respectively. The average annual irrigation amount was 554.5mm, irrigation amount of drought years of '92 and '94 was 604.6mm, 679.2mm, respectively. However, irrigation amount of extended drought year '95 was 384.9mm. It showed that supplying capacity of Jangsung reservoir was limited when consecutive 2 year drought occurred. The main water resources usage of Jangsung reservoir was irrigation, but flood control discharge exceed irrigation amount exceptionally when high precipitation occurred. The reservoir operation record revealed that discharge for river maintenance was delivered even drought years.
계분살포시 수질자료를 이용한 GLEAMS 영양물질 부모형 평가
윤광식 ( Yoon Kwang Sik ) 한국농공학회 1998 한국농공학회 학술대회초록집 Vol.1998 No.-
The GLEAMS nutrient submodel was evaluated to predict nutrient losses in surface runoff following application of two rates (9 and 18 t/ha) of poultry litter and a recommended rate of commercial fertilizer on corn plots. Nutrient submodel was evaluated with calibrated runoff and sediment losses to the observed field data. Simulation of nitrogen transformation effects on nitrogen losses in surface runoff did not agree with field data. The model simulated higher NH<sub>4</sub>-N than NO<sub>3</sub>-N losses in surface runoff, while field data showed the opposite.