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State Indicator of Water Quality for Surface Water and Groundwater in Agriculture
Kim, Min-Kyeong,Jung, Goo-Bok,Ro, An-Sung,Choi, Seung-Chul,Choi, Won-Il,Kim, Eun-Jeong,Lee, Jong-Eun,Yun, Yeo-Uk,Kim, Kab-Cheol,Ko, Do-Young,Kim, Byeong-Ho,Kim, Hyeon-Ji,Park, Sang-Jo,Lee, Seong-Tae,H 한국토양비료학회 2015 한국토양비료학회지 Vol.48 No.5
Indicators of environmental conditions qualitatively and quantitatively describe the state of the environment and natural resources, and the OECD (Organization for Economic Cooperation and Development) has initiated and suggested AEIs (Agri-Environmental Indicators) to assess trends over time of the effects of agriculture on the environment and the effectiveness and efficiency of agricultural and environmental policy measures since 1990's. This study aims to develop the state indicators of water quality for agricultural water, surface and groundwater, to evaluate the environmental impacts of agricultural activities and policies by qualifying the environmental levels of a nation. Status indicators were calculated according to the agricultural water quality standards of OECD and Korea, and their trends were analyzed over time. Particularly, nitrate ($NO_3{^-}$) status indicators of ground water in 2013 were significantly lower than the ones in 2000. Overall, the water quality indicators of surface water in 2013 were higher than the ones in 2012, except for pH and DO. The groundwater quality indicators in 2013 were lower than those of previous years. The optimal management indicators were calculated to assess agricultural surface water and groundwater quality. The findings of this study indicated that the state indicators could play a significant role to establish policies and procedures for managing and conserving water resources. This study also discussed water pollution caused by agricultural and industrial effluents.
피스톤 가공용 CNC 선반 HOT-1000 개발에 관한 연구
김경석,김종관,김상복,김성식,정현철,이도윤 한국공작기계학회 1996 한국생산제조학회지 Vol.5 No.2
The purpose of this study is the development of a lathe which can cut any pistons of oval shape with high speed, accuracy and precision by CNC (computer Numerical Control) method. Y axis which is the mechanism of position determination with high speed response has been aded to the CNC lathe and ovality and profile has been cut under the synchronous control of C-Y-Z axes. In the case of ovality of Φ0.5mm, the productivity can be improved up to 1500rpm by high speed cutting than modeling method.
저산소에 노출된 넙치(Paralichthys olivaceus)의 호흡대사와 혈액의 화학적 변화
한지도 ( Ji Do Han ),김흥윤 ( Heung Yun Kim ) 한국수산과학회 2016 한국수산과학회지 Vol.49 No.1
This experiment investigated changes in metabolic rate (MO2), critical oxygen saturation (Scrit), and blood chemistry of olive flounder Paralichthys olivaceus exposed to progressive hypoxia and returned to normoxic water at 20°C. The normoxic standard metabolic rate (SMR) and routine metabolic rate (RMR) were 69.5-83.9 and 70.2-156.4 mg O2 kg-1h-1, respectively based on fish weight. Scrit was 31.0% dissolved oxygen (DO) at 20°C. After returning the fish to 70% DO following exposure to hypoxia (20% DO), MO2 increased two-fold compared to the normoxic SMR and then decreased into the range of the RMR with time. Blood PO2 and plasma lactate decreased significantly after exposure to hypoxia (20% DO) and then increased as ambient oxygen saturation decreased. Cortisol levels increased as ambient oxygen saturation decreased, but the levels decreased rapidly in the range of the normoxic control when the fish were returned to ambient water with 70% DO. Plasma glucose levels increased when the fish were returned to normoxic water after exposure to a progressively more hypoxic condition.
State Indicator of Water Quality for Surface Water and Groundwater in Agriculture
Min-Kyeong Kim,Goo-Bok Jung,An-Sung Ro,Seung-Chul Choi,Won-Il Choi,Eun-Jeong Kim,Jong-Eun Lee,Yeo-Uk Yun,Kab-Cheol Kim,Do-Young Ko,Byeong-Ho Kim,Hyeon-Ji Kim,Sang-Jo Park,Seong-Tae Lee,Jae-Young Heo,S 한국토양비료학회 2015 한국토양비료학회지 Vol.48 No.5
Indicators of environmental conditions qualitatively and quantitatively describe the state of the environment and natural resources, and the OECD (Organization for Economic Cooperation and Development) has initiated and suggested AEIs (Agri-Environmental Indicators) to assess trends over time of the effects of agriculture on the environment and the effectiveness and efficiency of agricultural and environmental policy measures since 1990’s. This study aims to develop the state indicators of water quality for agricultural water, surface and groundwater, to evaluate the environmental impacts of agricultural activities and policies by qualifying the environmental levels of a nation. Status indicators were calculated according to the agricultural water quality standards of OECD and Korea, and their trends were analyzed over time. Particularly, nitrate(NO₃<SUP>-</SUP>) status indicators of ground water in 2013 were significantly lower than the ones in 2000. Overall, the water quality indicators of surface water in 2013 were higher than the ones in 2012, except for pH and DO. The groundwater quality indicators in 2013 were lower than those of previous years. The optimal management indicators were calculated to assess agricultural surface water and groundwater quality. The findings of this study indicated that the state indicators could play a significant role to establish policies and procedures for managing and conserving water resources. This study also discussed water pollution caused by agricultural and industrial effluents.
만성 견비통에 대한 동씨침 치료의 무작위 대조군의 임상 연구
김찬영,권나현,신예지,남동우,김건형,김종인,최도영,이윤호,이재동 WHO COLLABORATING CENTRE FOR TRADITIONAL MEDICINE 2007 東西醫學硏究所 論文集 Vol.2007 No.-
Objectives : To observe the effect of acupuncture treatment in chronic shoulder pain patients. Methods : 36 voluntary patients were randomly assigned to an acupuncture treatment group(E GrouP, n=18) and a control group(C GrouP, n=18). The E Group patients received acupuncture treatment on LI_(15), TE_(14), GB_(21) and Master Dong's acupuncture points, Shin-gwan and Gyun-joong, twice a week for four weeks. The C Group patients received no treatment. All patients in both groups were instructed to practise self exercise in their daily lives. Evaluations were made at baseline and after four weeks of study. The Constant Shoulder Assessment(CSA), Shoulder Pain and Disability Index(SPADI) and the patient's subjective pain was measured by Visual Analogue Scale(VAS). The obtained data was analyzed. Results '. The E Group showed significant(p<0.05) improvement in CSA, SPADI and VAS after four weeks of treatment. The C Group showed significant(p<0.05) improvement in CSA, but the change of SPADI and VAS was insignificant(P>0.05). CSA and SPADI of E Group significantly(p<0.05) improved compared to the C GrouP, but the difference of VAS change in the two groups was insignificant(p>0.05). Conclusions : Four weeks of acupuncture treatment significantly improved CSA, SPADI and VAS. The improvement of CSA and SPADI was significant(p<0.05) compared to untreated patients.
백서 두개골에 형성된 골 결손부 크기에 따른 골 치유과정에 대한 조직학적 연구
윤도철,김경욱,임창준,김종여 단국대학교 치의학연구소 1994 논문집 Vol.6 No.1
The author made calvarial defects of different sizes in rat to study the effect of defect size on healing process. Experimental animals were sacrified at 3 days, 1 week, 2, 4, 6 weeks. The specimens were examed under light microscope with Hematoxlin-Eosin and modified Gomori's trichrome stain, and under fluorescent microscope after glinding the specimens. The results were as follows. 1. 4㎜-diameter calvarial defects healed about 70% after 6 weeks. 2. Lamellated bone trabecules were seen in 6㎜-diameter calvarial defects after 4 weeks, and the small specules of bone and marrows were observed after 6 weeks. 3. 10㎜-diameters calvarial defects healed about 50% and incomplete interconnection of the lamellated bone trabecules were observed after 6 weeks. 4. Under fluorescent microscope, about 4㎜-long bone regeneration could be seen in most of the defects.