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동전기 정화기술을 이용한 Zn, Ni, F 복합오염 토양의 정화
조정민,류병곤,박성우,김경조,백기태,Cho, Jung-Min,Ryu, Byung-Gon,Park, Sung-Woo,Kim, Kyeong-Jo,Baek, Ki-Tae 한국지하수토양환경학회 2009 지하수토양환경 Vol.14 No.1
Zn, Ni 및 불소로 복합 오염된 토양의 정화를 위해서 동전기 정화(Electrokinetic remediation)기술을 적용하였다. 토양에서 탈착된 불소는 음이온 형태이고, Zn, Ni은 양이온으로 존재하기 때문에 간극수가 이동하는 전기삼투(electro-osmosis)와 이온이 이동하는 전기이동(electro-migration)의 두 가지 기작에 의해 제거되는 경향이 달랐다. 불소는 알칼리 조건에서 토양으로부터의 탈착이 증가하고, Zn과 Ni은 산성조건에서 탈착이 증가된다. 두 가지 탈착 특성이 다른 오염물질을 순차적 pH조절을 통해 효과적으로 제어할 수 있었다. 정전압 하에서의 영향을 평가하기 위하여 2V/cm를 적용하여으며, 2주간의 실험을 통해 Zn은 20.5%, Ni은 2.5%, 불소는 57.4% 제거되었다. Zn과 Ni의 제거율은 낮았으나 토양 ph조절을 통해 이동 가능함을 확인하였다. 토양 pH조절을 통하여 특성이 다른 복합오염물질을 동전기 정화 기술로 제거할 수 있을 것으로 사료된다. The feasibility of electrokinetic remediation was investigated in the laboratory to treat contaminated soil with Zn, Ni and F. Electro-migration and electro-osmosis are the major removal mechanisms because fluorines desorbed from soil exist as an anionic form in soil pores, and Zn and Ni exist as a cationic form. Desorption of fluorine was enhanced under the alkaline condition, but that of Zn and Ni increased under the acidic condition. Sequential pH control was effective to control the mixed wastes from contaminated soil. 2 V/cm was applied to reactor to evaluate the effect of constant voltage gradient, after two weeks, the removal efficiency of Zn, Ni and F was 20.5%, 2.5% and 57.4%, respectively. Even though the removal of Zn and Ni was very low, the pH control enhanced transport of Zn and Ni significantly. As a result, sequential pH control is a effective method to remediate mixed waste-contaminated soil.
분광학(分光學)적 방법(方法)에 의한 중유회(重油灰) 용출액(溶出液) 중(中)의 Ni 정량(定量)에 관(關)한 기초(基礎) 연구(硏究)
조정민,한혜철,Jo, Jung-Min,Han, Hyea-Chul 한국자원리싸이클링학회 2012 資源 리싸이클링 Vol.21 No.5
중유회로부터 증류수로 용출시킨 중유회 용출액에서 금속 중 $Ni^{2+}$이온의 정량을 분광광도법으로 측정하고자 하였다. 또 중유회용출액 중 다량 존재하는 $V^{3+}$이온이 $Ni^{2+}$이온의 분광광도법적 정량에 미치는 영향을 알아보기 위하여 $Ni^{2+}$이온 ppm 대비 $V^{3+}$이온의 함량을 달리한 시료의 흡광도를 조사한 결과 $V^{3+}$이온의 함량이 $Ni^{2+}$ 함량의 50% 이하인 조건에서는 시료 중 $Ni^{2+}$이온의 정량이 분광광도법으로 가능함을 확인하였다. We tried to measure the fixed quantity of $Ni^{2+}$ion among the metals which were eluted by distilled water from the Fly Ash Leach Liquor(FALL) with a spectrophotometric method. In addition, we researched absorbance values which had different contained quantity of $V^{3+}$ion in contrast with $Ni^{2+}$ion ppm to find out the influence of the $V^{3+}$ion existed in the FALL on the spectrophotometric fixed quantity of $Ni^{2+}$ion. As a result, when $V^{3+}$ ion has below 50% of amount of $Ni^{2+}$ion, the fixed quantity of $Ni^{2+}$ion among the FALL was able to be confirmed by spectrophotometry.
조정민,조성웅,김도형,양중석,백기태,Cho, Jung-Min,Jo, Sung-Ung,Kim, Do-Hyung,Yang, Jung-Seok,Baek, Ki-Tae 한국지하수토양환경학회 2011 지하수토양환경 Vol.16 No.5
The electrokinetic transport characteristics of salts were investigated using nitrate and sulfate accumulated saline greenhouse soil. Within 8 days, 95% of nitrate was removed from the soil, while sulfate removal was 19% for 8 days. The low removal of sulfate came from adsorption reaction on the soil particles or organic matter and precipitation with calcium. Divalent cations such as calcium and magnesium were transported toward cathode via electromigration, and most monovalent cation such as potassium was removed. The pattern of residual electrical conductivity was similar with that of sulfate. Based on the results, electrokinetic technique is effective to restore nitrate-accumulated saline soil, but is not effective to restore sulfate-accumulated soil.
Some Notes on Predicative Copular Constructions in Predicate Contrastive Topic
조정민 ( Jung Min Jo ) 21세기영어영문학회 2013 영어영문학21 Vol.26 No.4
This paper re-examines Jo (2013)`s phrasal movement approach to predicate contrastive topic constructions in Korean and applies his analysis to predicative copular constructions with regard to forming predicate contrastive topic. Jo (2013) proposed a unified analysis of two kinds of predicate contrastive topic constructions, so-called Ha- and R-constructions, and claimed that the two constructions arise as a result of morphophonological variation at the PF/Morphological component via selective PF-deletion process in the lower copy of the moved constituent. By extending his analysis to predicative copular constructions, this paper strongly confirms the validity of his analysis and claim. The analysis of the affix ‘-ki` as a rescue affix along with the dummy verb ‘-ha` is further supported by its morphological distribution in predicative copular constructions. Also the phrasal movement approach to predicative copular constructions makes it viable to assume that the copula is a syntactic head selecting a Small Clause.
융·복합 공연예술 창작과정의 특징 연구 – 파다프(PADAF)를 중심으로
조정민(Jeong-Min Jo) 한국엔터테인먼트산업학회 2020 한국엔터테인먼트산업학회논문지 Vol.14 No.8
본 연구는 융·복합 공연예술의 창작과정의 특징이 무엇인지 도출해 내는 것을 목적으로 한다. 이에 연구대상으로는 2011년 제1회를 시작으로 2020년 현재까지 매년 꾸준히 개최되고 있는 국내 대표적 융·복합 공연예술축제인 파다프(PADAF-Play And Dance Art Festiva)를 연구대상으로 선정하였다. 국내 대표적 융·복합 공연예술축제인 파다프를 통해 21세기 공연예술의 핵심적 특징인 융·복합 공연예술의 창작과정의 특징을 연구하기 위하여 과정 중심의 발견을 통한 질적 사례연구 방법을 선택하였다. 또한 사실적이고 실증적인 연구를 위하여 제8회와 제9회 파다프의 초기 준비 단계부터 폐막식까지 전 과정을 참여관찰 하였으며, 여러 차례에 걸쳐서 파다프 관계자 및 참여 아티스트들을 대상으로 심층 인터뷰를 진행하였다. 파다프를 통한 융·복합 공연예술 창작과정의 특징을 살펴봤을 때 창작자들은 서로 다른 이질적인 장르가 만나 변증법적으로 변하는 과정에서 작업에 대한 서로 다른 방식으로 생각지도 못한 난관에 부딪혔지만 타 장르에 대한 이해, 융·복합을 통한 경험적 가치, 공동작업자로서의 공유 그리고 다양한 방식의 소통을 통해 난관들을 극복했다. 파다프를 중심으로 살펴본 융·복합 공연예술 창작과정의 특징은 프랑스 철학자 질 들뢰즈(1925-1995)의 ‘리좀(Rhizom)적 사고’ 와 ‘집단지성의 원칙’ 그리고 창작자들의 ‘실험적 창조를 위한 융·복합의 경험적 가치’ 이다. 도출된 창작과정의 특징은 융·복합 공연예술을 조금 더 이해하고 융·복합이라는 확장된 표현을 통해 소통하고자 하는 인간의 기본 욕구와 예술적 본질에 대한 이해를 바탕으로 변화되고 있는 공연예술과 문화의 새로운 패러다임에 대한 미학적 방향성과 발전에 이바지하기를 바란다. The purpose of this study is to derive the characteristics of the creative process of convergence performing arts. Therefore, the PADAF-Play and Dance Art Festival, a representative convergence performing arts festival in Korea that has been held steadily every year since the first event in 2011, was selected as the subject of the study. Through PADAF, a representative convergence performing arts festival in Korea, qualitative case studies were selected through process-oriented discovery to study the characteristics of the creative process of convergence performing arts, which is a key feature of performing arts in the 21st century. For realistic and empirical research, the 8th and 9th PADAF participated in the entire process from the initial stage of preparation to the closing ceremony and conducted several in-depth interviews with PADAF officials and participating artists. Looking at the characteristics of the convergence performance art creation process through PADAF, creators overcame difficulties that they had not thought of in different ways in the process of meeting different heterogeneous genres, but through understanding other genres, experiential values through convergence, sharing as collaborators, and various ways of communication. The characteristics of the convergence performing arts creation process, which is focused on PADAF, are “Rhizom thinking” by French philosopher Gilles Deleuze(1925-1995), “Collective intelligence,” and “Experimental Value for Experimental Creation” by creators. Through this derivation, we will help the changing performing arts scene based on the basic human desire to understand convergence performance art a little more and communicate through the extended expression of convergence.
하이퍼튜브 추진용 케스케이디드 H-브리지 멀티레벨 인버터 설계
조정민(Jeong-Min Jo),이광주(Kwang-Joo Lee),이석영(Seok-Young Lee),최수용(Su-Yong Choi),이창영(Chang-Young Lee),이관섭(Kwan-Sup Lee) 대한전기학회 2020 전기학회논문지 Vol.69 No.2
This paper presents the propulsion system based on the cascaded H-bridge multi-level inverter for the HyperTube propulsion. Simulation results show that the proposed system has high efficiency under various modulation index condition of the inverter when compared to a two-level inverter and a three-level inverter. In order to confirm the feasibility of the proposed system as a HyperTube propulsion system, a miniature 5-level cascaded H-Bridge inverter is designed and test results show that such an inverter is expected to be useful for HyperTube based on long-stator linear motors.
자기부상열차의 부상제어 요구 성능을 고려한 시스템의 설계
조정민(Jo Jeong-Min),이종민(Lee Jong-Min),강병관(Kang Byung-Gwan),박성호(Par,Sung-Ho),김철호(Kim Cheol-Ho),최종묵(Choi Jong-Mook),김국진(Kim Kuk-Jin) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
The performance of magnetic levitation controller is affected from not only levitation control algorithm but also the interaction between compositing system, so it is important to design maglev system considering the character of magnetic levitation controller in order to get the required performance of Maglev. The factors affecting the levitation controller of maglev are the dynamics of levitation magnet, the carrying weight of the overall system, the normal force and lateral force of traction motor and rail condition. In this paper the interaction between magnet and vehicle weight is analysed on side of stability of levitation controller in order to get the required performance of levitation controller.