만경강 하류유역 수질의 월별 변화

손재권,최진규,구자웅,송재도,김영주,Son Jae Kwon,Choi Jin Kyu,Koo Ja Woong,Song Jae Do,Kim Young Ju 한국관개배수위원회 2004 한국관개배수논문집 Vol.11 No.2

This study was carried out to investigate the change of stream water quality in the downstream of the Mangyeong river. Water samples were taken at 6 sampling sites for 11 months from November,2003 to September,2004. Water quality was analyzed with respect

만경강 하류유역 수질의 월별변화

손재권 ( Son Jae Kwon ),최진규 ( Choi Jin Kyu ),조재영 ( Cho Jae Young ),송재도 ( Song Jae-do ) 한국농공학회 2004 한국농공학회 학술대회초록집 Vol.2004 No.-

만경강 하류유역의 월별 수질조사를 위해 2003년 11월부터 2004년 9월까지 5개의 소유역 6개 지점에서 매월 1회씩 총 11회에 걸쳐 수질자료 분석결과를 요약하면 다음과 같다. 1. 전체 조사기간중 하천수의 수은은 1.5~31.0℃의 범위였으며, 평균은 18.0℃를 나타내었고, 수소이온농도(pH)는 6.36-8.71의 범위로 평균 7.15로 나타났다. 2. 화학적산소요구량(COD)은 2.61~41.44mg/L의 범위로 평균 11.86mg/L로, 총질소(T-N)의 함량은 1.07~25.72mg/L의 범위로 평균 7.41mg/L, 총인(T-P)의 함량은 0.01~1.86mg/L의 범위로 평균 0.52mg/L를 나타났다. 3. 부유물질(SS)의 함량은 7.8~1496.0 mg/L의 범위로 평균 197.9 mg/L를 나타냈고, 용존산소량(DO)은 2.20~8.42mg/L로 평균 5.21mg/L 생물화학적산소요구량(BOD)은 0.3~7.5mg/L의 범위를 보였으며 평균 3.19mg/L로 나타났다. 양이온함량은 칼슘의 경우 6.20~22.67mg/L, 마그네슘은 1.89~26.50mg/L, 나트륨은 4.09~295.00mg/L, 칼륨의 경우에는 2.35~32.20mg/L의 범위로 나타났다. 4. 만경강 하류유역의 경우에는 일부지역을 제외하고는 농경지가 차지하는 비율이 높은 전형적인 농촌유역의 형태를 지니고 있었으며 유역에 대한 수질조사결과 농업활동에 의한 영향은 일시적으로 수질에 영향을 미치고 있었으며 축산폐수 및 생활하수의 영향은 농업활동 에 의한 영향보다 큰 수준으로 하천수질에 영향을 미치고 있는 것으로 조사되었다. The purpose of this study was to investigate the change of stream water quality in down stream of Mangyeong river stream, water samples were taken at 6 sampling site during 12 months from November in 2003 to September in 2004. Therefore, we were to provide elementary data for the water quality management of Mangyeong river. Water quality was analyzed with pH, DO, BOD, COD, SS, Total-P, Total-P, Cation. COD, SS values of stream water was ranged 2.61~41.44mg/L, 7.8~1496.0mg/L. Total-N, Total-P of stream water was ranged 1.07~25.72mg/L, 0.01 ~1.86mg/L. Also, DO, BOD of stream water was ranged 2.20~8.42mg/L, 0.3~7.5mg/L respectively.

새만금 간척지 토양의 초기제염 후 재염화 방지를 위한 물관리 방법

손재권 ( Jae Kwon Son ),송재도 ( Jae Do Song ),이수환 ( Su Hwan Lee ),유진희 ( Jin Hee Ryu ),조재영 ( Jae Young Cho ) 전북대학교 농업과학기술연구소 2015 농업생명과학연구 Vol.46 No.2

The main purpose of this study is to survey optimum water management for preventing resalinization after early desalinization in Saemangeum reclaimed tidal lands. Water management experiments were carried out as three methods, namely, the non-irrigation, the intermediate-irrigation and the continuous-irrigation. Regression equations were obtained in order to investigate the changes of electrical conductivity after the early desalinization of the reclaimed tidal lands and to estimate preventing effects of resalinization. With the increase of the water requirement for desalinization(Dwl/Ds), the electrical conductivity decreased with high degree of correlationships and the effects of preventing resalinization were remarkable in continuous-irrigation. The results showed that the soil moisture contents could have a significant influence on resalinization of reclaimed tidal lands. Therefore, for preventing resalinization of reclaimed tidal lands, it is suggested that soil management by applying blocking of capillary and soil moisture would be required.

동진강상류 도원천유역의 수질변화

손재권 ( Son Jae-kwon ),구자웅 ( Koo Ja-woong ),최진규 ( Choi Jin-kyu ),조재영 ( Cho Jae-young ),송재도 ( Song Jae-do ),김영주 ( Kim Young-ju ) 한국농공학회 2005 한국농공학회 학술대회초록집 Vol.2005 No.-

This study was performed to investigate the stream water quality characteristics according to the seasonal variation at Dowon-chon of the Dongjin river. Water samples were taken during 15 months from May in 2004 to July in 2005. The measured pH, EC of the stream water was ranged 6.49~7.22, 21.0~173.4μS/cm. The concentration of T-N, T-P, COD, SS, DO, BOD were 2.14~8.93mg/L, 0.01~0.39mg/L, 1.22~12.08mg/L, 12.0~2,124.0mg/L, 5.01~11.50mg/L, 0.5~6.0mg/L respectively.

농촌 어메니티자원 활용방안에 관한 연구

손재권 ( Son Jae-kwon ),최진규 ( Choi Jin-kyu ),송재도 ( Song Jae-do ),김영주 ( Kim Young-joo ) 한국농공학회 2006 한국농공학회 학술대회초록집 Vol.2006 No.-

Recently, rural areas are faced with many difficulties due to free trade agreement(FTA), WTO and DDA negotiations. Therefore, Government is planning to establish a way for resolving of these problems. The purpose of this study is to present the effective developing direction of rural amenity resources through the amenity investigation in Napo-Myeon, Gunsansi. The developing direction of rural village is divided into two types considering distribution of rural amenity resources.

Caffeine 투여시 Rat의 혈액내 혈액화학성분의 변화

도재철 ( Jae Cheul Do ),박노찬 ( No Chan Park ),장성준 ( Sung Jun Jang ),조광현 ( Kwang Hyun Cho ),박인화 ( In Hwa Park ),손재권 ( Jae Kwon Son ),김수웅 ( Soo Woong Kim ) 한국가축위생학회 1997 韓國家畜衛生學會誌 Vol.20 No.3

This study was conducted to identify the effects of caffeine on the change of blood chemistry components in the serum of the rat(Sprague-Dawley, female). The experimental groups were divided into 7 groups according to the time lapsed after a single oral administration of 100mg/kg caffeine(that is control, 2, 4, 8, 24, 48 and 72 hrs lapsed group) to the rats. The concentrations of glucose, urea nitrogen, uric acid, creatinine, total protein, albumin, A/G ratio, triglyceride, total cholesterol, HDL-cholesterol, free fatty acid and phospholipid as well as the activities of alanine aminotransferase(ALT), aspartate aminotransferase(AST) and alkaline phosphatase(ALP) were measured in the serum of each experimental groups. The results obtained from this study were summarized as follows; 1. The concentrations of serum glucose were significantly higher(p<0.01) between 4 (143.0 mg/dl) and 8 hrs(138.0mg/dl) in comparison to the control(101.lmg/dl) after a single oral administration of caffeine(l00mg/kg). Whereas there were no significant differences in the concentrations of urea nitrogen, uric acid, creatinine, total protein, albumin and albumin/globulin(A/G) ratio in comparison to the control. 2. The concentrations of total cholesterol and HDL-cholesterol in serum were significantly higher (p<0.01) between 4(77.4mg/dl, total cholesterol) and 8 hrs(64.7mg/dl, HDL-cholesterol) in comparison to the control(62.8, 46.7mg/dl) after a single oral administration of caffeine (100mg/kg). On the other hand, the concentrations of triglyceride in serum were significantly lower(p<0.01) after 8 hrs(38.8mg/dl) in comparison to the control(66.5mg/dl). 3. The activities of AST in serum was significantly higher(p<0.05) from 2 hrs(149 U/L) to 8 hrs(178 U/L) in comparison to the control(112 U/L) after a single oral administration of caffeine (100mg/kg). The activities of ALT in serum were significantly higher(p<0.01) at 4(45.5 U/L), 24(49.3 U/L), 48(46.8 U/L) and 72 hrs(42.3 U/L) in comparison to the control (39.7 U/L) after a single oral administration of caffeine(l00mg/kg). On the other hand, there were no significant differences in the activities of ALP in comparison to the control.

새만금 간척예정지 수도작 지대에서 수질시료중 화학성분의 함량변화

조재영 ( Jae-young Cho ),최진규 ( Jin-kyu Choi ),손재권 ( Jae-kwon Son ),구자웅 ( Ja-woong Goo ),한강완 ( Kang-wan Han ),송재도 ( Jae-do Song ) 한국농공학회 2003 한국농공학회 학술대회초록집 Vol.2003 No.-

The concentrations of nutrients in precipitation increased slightly from May to June and did not change afterwards. Regarding irrigation water, the nutrient concentrations were high in the early stage of rice growth but decreased during the period of mid-June to mid-July. The concentration of Tot-N in runoff water increased significantly during the period of fertilizer application (basal, tillering, and panicle fertilization) and then decreased. The concentrations of Tot-N in runoff water ranged from 0.4 to 39.8mg/L (average of 5.9mg/L). The concentration of Tot-P in runoff water ranged from 0.0004 to 0.2084mg/L (average of 0.055mg/L). The Tot-P concentrations were high only at the early stage of rice growth after fertilizer application and did not change afterwards.

Vitamin E 경구투여가 한우 거세비육우의 혈액 및 근육내 지질과산화 작용에 미치는 영향

도재철 ( Jae Cheul Do ),조민희 ( Min Hee Cho ),이영미 ( Young Mi Lee ),장지택 ( Jee Taek Jang ),이양수 ( Yang Soo Lee ),손재권 ( Jae Kwon Son ),송희종 ( Hee Jong Song ),정종식 ( Jong Sik Jyeong ) 한국가축위생학회 1999 韓國家畜衛生學會誌 Vol.22 No.3

This study was evaluated to know the effects of vitamin E(VE) on the lipid peroxidation in blood and sirloin of castrated korean indigenous beef cattle. Experimental groups were divided into VE 500 IU(A), 1,500 IU additative feeding group(B) and non-VE-treated control group(C). After oral administration to the cattle for 120 and 150 days, body weight gains, VE contents in plasma and sirloin, and thiobarbituric acid(TBA) value were examined according to the exhibition period(1-7 days) in refrigerated showcase between aging and non- aging group. The results obtained from this study were summarized as follows; 1. Body weight gain per day of control compared with VE additative feeding A and B groups were showed no significantly differences. 2. The concentrations of VE in plasma after oral administration with VE for 120 days were significantly increased(p<0.05) in A and B groups. There were higher(p<0.05) 4.22μg/mℓ in A and 6.22μg/mℓ in B group than the control(3.0μg/mℓ). And the concentrations of VE in plasma for 150 days were significantly increased(p<0.05) in VE additative feeding groups. There were higher 4.89μg/mℓ in A and 7.05μg/mℓ in B group than the control(3.15μg/mℓ). 3. The concentrations of VE in sirloin for 120 days were significantly increased(p<0.05) in A and B groups. There were higher 1.84μg/g in A group and 2.40μg/g in B group than the control(0.78μg/g). And the concentrations of VE in sirloin for 150 days were significantly increased(p<0.05) in A and B groups. There were higher l.94μg/g in A group and 2.63μg/g in B group than the control(1.00μg/g). 4. TBA values, the indicator of lipid peroxidation, in non-aging sirloin according to the exhibition period(1-7 days) in refrigerated showcase after oral administration with VE additative feed for 120 days were lower 0.73 in A and B groups than 0.82 in control at the third day after exhibition. In the same group, TBA values were significantly(p<0.05) lower 0.77 and 0.75 in A and B groups than 1.22 in control at the seventh day after exhibition. Equally, in the aging group, there were significantly(p<0.05) showed lower TBA values 1.05 and 0.99 in A and B groups than 1.87 in control at the seventh day after exhibition. 5. After oral administration with VE additative feed to the cattle for 150 days, TBA values in non-aging sirloin according to the exhibition period(1-7 days) in refrigerated showcase were significantly(p<0.05) decreased to 0.84 and 0.88 in A and B groups than 1.26 in control at the seventh day after exhibition. In the aging group, there were significantly(p<0.05) showed lower TBA values 0.95 and 0.99 in A and B groups than 1.79 in control at the seventh day after exhibition.

제수문 영향 및 액비시용 증가에 따른 농업소유역에서의 비점오염원 특성 평가

송재도,장태일,손재권,Song, Jae-Do,Jang, Taeil,Son, Jae-Kwon 한국농공학회 2016 한국농공학회논문집 Vol.58 No.6

The purpose of this study was to assess nonpoint sources (NPS) pollution affected by liquid manure and regulating gate in a small agricultural watershed. The study area, which is a wide plain farmland, was operating by the Buyong regulating gate in order to maintain irrigation water level during irrigation period. Consequentially, runoff only occurs through the gate at each event in rainy season for avoiding farmland inundation. In addition, the usage ratio of liquid manure in the study area has been increased greatly since 2014. Discharge loads at the Hwaingsan bridge subwatershed were 1.2 times for T-N, 4-10 times for T-P, and 3-8 times for TOC compared with the Soyang watershed (control) during study period. The reason was that NPS pollutants from upper Gpeun and Sangri bridge subwatersheds, which are widely spraying with livestock liquid manure, were stack at this subwaterehd because of regulating gate in non-rainy seasons. A number of agricultural watersheds in Saemangeum watershed are affected by regulating gate and vigorous livestock activities so that substantial management schemes under controling regulating gate are needed for minimizing livestock related NPS.

AWS자료를 이용한 새만금간척지의 기상분석

송재도 ( Song Jae-do ),손재권 ( Son Jae-kwon ),구자웅 ( Koo Ja-woong ),최진규 ( Choi Jin-kyu ),조재영 ( Cho Jae-yong ),김영주 ( Kim Young-ju ) 한국농공학회 2007 한국농공학회 학술대회초록집 Vol.2007 No.-

It is important to be analyze the relationship between agricultural land planning and weather in the Saemangeum reclaimed tideland. So, this study was analyzed weather characteristics of Saemangeum reclaimed tideland until December, 2006 since January, 2001 using the AWS observation weather data. Analysis items of weather data were air temperature, wind speed, precipitation. In case of air temperature was ascending gradually, and was ranged 12.7~14.0℃ during the recently 6 year. Island and inland region was showed high, but showed comparatively low in region that was adjoined in west coast. Also, wind speed, annual precipitation were ranged 1.4~3.5m/s, 1,064.5~1,367.1mm by regional.