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광산 인근 밭토양에서 중금속 안정화제 처리 및 복토층 처리에 의한 토양 중 중금속 식물유효도 변화 및 고추의 중금속 흡수
김권래(Kwon-Rae Kim),박정식(Jeong-Sik Park),김민석(Min-Suk Kim),구남인(Nam-In Koo),이상환(Sang-Hwan Lee),이진수(Jin-Su Lee),김성철(Sung-Chul Kim),양재의(Jae-E Yang),김정규(Jeong-Gyu Kim) 한국토양비료학회 2010 한국토양비료학회지 Vol.43 No.6
At the current situation of continuous utilization of heavy metal contaminated upland for agricultural purpose in Korea, minimizing transport of heavy metals from soil to crops is important for securing safety of human health. The present study (in field scale) examined the efficiency of several soil amendments (dolomite, steel slag, lime, zeolite, and compost) on reduction of phytoavailable heavy metals (Cd, Cu, Pb, and Zn) in soil through comparison with no amendment treatment and clean soil cover treatment. For determination of the phytoavailability, 1 M NH4NO3 extraction and red pepper cultivation were introduced. Among the amendments, in general, dolomite and steel slag were the most effective in reduction of metal (Cd, Pb, and Zn) phytoavailability resulting in less accumulation of these metals in shoot and fruit of red pepper. However, dolomite and steel slag treatment was not as effective as clean soil cover treatment which showed the least metal accumulation in red pepper fruit. Nevertheless, with taking into account the cost, treatment of dolomite or steel slag can be competitive method because the current study showed that dolomite or steel slag treatment reduced accumulated heavy metal concentration effectively in both shoot and fruit of red pepper compared to those from control soil and the concentration in fruit was within the standard value (<0.2 mg kg<SUP>-1</SUP> for both Cd and Pb).
김남인 ( Kim Nam In ),조윤주 ( Jo Yun Ju ),권계형 ( Kwon Gye Hyeong ),김태헌 ( Kim Tae Heon ),주연호 ( Ju Yeon Ho ),박영숙 ( Park Yeong Sug ) 대한소화기학회 2003 대한소화기학회 추계학술대회 Vol.2003 No.-
<목적> 호산구성 위장관염은 호산구 침윤에 의한 다양한 위장관 증상을 나타내는 비교적 드문 질환으로, 임상의는 산발적으로 경험하고 있다. 아직 원인 및 병리학적 배경은 모르나, 점차 빈도가 증가하고 있어 관심이 모아지고 있다. 이에 저자들은 최근 호산구성 위장관염 3예를 경험하였기에 국내 보고 증례를 분석하여 임상 양상 및 특징을 살펴보았다. <방법> 1970-2003년까지 한국의학연구정보센타를 통해 검색된 호산구성 위장관염 국내보 26예와 2002-2
김남인 ( Nam In Kim ),조윤주 ( Yun Ju Jo ),송문희 ( Mun Hee Song ),김성환 ( Sung Hwan Kim ),김태헌 ( Tae Hun Kim ),박영숙 ( Young Sook Park ),엄우연 ( Woo Youn Eom ),김수웅 ( Soo Woong Kim ) 대한소화기학회 2004 대한소화기학회지 Vol.44 No.4
Background/Aims: Eosinophilic gastroenteritis (EG) is an uncommon disease with various gastrointestinal symptoms characterized by eosinophilic infiltration. Its incidence increases recently. We investigated the clinicopathologic features of the patients w
액체 전해질형 리튬 설퍼전지의 양극 바인더로 PTFE의 특성 조사
김남인 ( Kim Nam In ),서재만 ( Seo Jae Man ),이채봉 ( Lee Chae Bong ),이원재 ( Lee Won Jae ),홍태기 ( Hong Tae Gi ) 한국공업화학회 2003 공업화학 Vol.14 No.8
바인더로 carboxymethyl cellulose (CMC), polyvinyl alcohol (PVA), 그리고 polytetrafluoroethylene (PTFE)을 혼합한 형태와 polyethylene oxide (PEO) 만을 사용한 양극을 제조하였다. 제조된 양극에 대해 morphology와 전기화학적 특성 및 전지성능을 조사하여 바인더의 영향을 고찰하였다. 혼합된 바인더에 따라 양극내의 세공분포 양상은 변하고 이는 전지의 성능에 영향을 미쳤다. 양극에서 PTFE 함량이 높을수록 비표면적은 증가하였고 계면 저항은 감소하여 전지의 출력성능을 향상시키는 효과가 있었다. PTFE (15 wt%)를 혼합한 양극에서 가장 우수한 방전 특성을 보였고 이 때 비표면적과 설퍼 이용률은 각각 16 m²/g과 70% 이상이었다. The cathodes with various binders such as carboxymethyl cellulose (CMC), polyvinyl alcohol (PVA), polytetrafluoroethylene (PTFE), and polyethylene oxide (PEO), in different combinations including sole component in the case of PEO, were prepared. These cathodes were examined by morphology measurement, electrochemical characteristics, and discharge performance to inspect the effect of binder on Li-S battery. The morphology of cathode varies with various binder combination and the performance of battery is greatly affected by the morphology. The specific surface area (SSA) of cathode composite material increases and the interface resistance reduces with increasing content of PTFE introduced into the cathode. The battery with cathode including F`TFE (15 wt%) showed the distinguished power enhancement, compared with those composed of other binder combinations. The cathode with predominant results was able to increase SSA and sulfur utilization by 16m^(2)/g and more than 70%, respectively.