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안검개방실행증의 임상양상을 보인 검판전부의 안검경련 1례
김준태,김병채,황인용,이성민,최성민,손의주,김명규,조기현,Kim, Joon-Tae,Kim, Byeong-Chae,Hwang, In-Yong,Lee, Sung-Min,Choi, Sung-Min,Son, Eui-Ju,Kim, Myeong-Kyu,Cho, Ki-Hyun 대한임상신경생리학회 2002 Annals of Clinical Neurophysiology Vol.4 No.1
Blepharospasm and apraxia of lid opening(ALO) are non-paralytic causes of involuntary eyelid closure. Clinically it is difficult to differentiate blepharospasm and ALO, and these two conditions are sometimes associated. We report a case of pretarsal blepharospasm presenting as apraxia of lid opening. 55-year-old woman was noted to have voluntary eye opening difficulty. We synchronously record the electromyographic(EMG) from the levator palpebrae superioris and the orbicularis oculi muscles in this patient. This results suggested that she has a variant of blepharospasm due to abnormal contraction in the pretarsal orbicularis oculi.
김준태,김선화,김해진,Kim, Joon-Tae,Kim, Sun-Hwa,Kim, Hae-Jin 대한환경위생공학회 2006 대한환경위생공학회지 Vol.21 No.4
The water purification was very important in Korea which has not sufficient water resource and while adsorption method among the various methods to eliminate the water pollutants has been widely used by activated carbon. This study was conducted the basic experiment for hall distribution, pH, conductivity, electronic microscope, cation exchange and inorganic materials the adsorption capacity of Korean traditional charcoal which has similar characteristics to activated carbon of organic pollutants. As a result of observing Korean traditional charcoal with electronic microscope, it was found that it has porous structure, oak charcoal has circular structure, pine charcoal has square structure and bamboo charcoal has hexagonal structure, which has high void fraction per unit area because of its thin cell wall structure. As a result of experimenting hall distribution, hall distribution of bamboo high temperature charcoal is high as 0.269cc/g and has the greatest inorganic contents and cation exchange capacity(CEC) which are the important factor of chemical adsorption.
Cryptand 이온교환 수지에 의한 U(Ⅵ), Pb(Ⅱ), Ce(Ⅲ) 금속 이온들의 흡착
김준태(Joon-Tae Kim),김해진(Hae-Jin Kim),김관천(Kwan-Chun Kim) 한국환경관리학회 2008 環境管理學會誌 Vol.14 No.2
1%, 2%, 10% 및 20%의 가교도를 가진 스타이렌(제4류 위험물) 디비닐벤젠 공중합체에 1-aza-18-crown-6 거대 고리 리간드를 치환반응으로 결합시켜 수지들을 합성하였으며, 이들 수지의 합성은 염소 함량과 원소 분석 그리고 IR-스펙트럼으로 확인하였다. 수지 흡착제에 대한 금속 이온의 흡착에 미치는 pH, 시간 그리고 수지의 가교도에 따른 영향들을 조사한 결과 금속 이온들은 pH 3 이상에서 큰 흡착율을 보였으며, 금속 이온들의 흡착 평형은 2시간 정도였다. 한편, 에탄올 용액에서 수지에 대한 흡착 선택성은 우라늄(UO₂²?) > 납(Pb²?) > 세륨(Ce³?) 이온이었고, 금속 이온의 흡착력은 1%, 2%, 10% 및 20%의 가교도 순이었다. Resins were synthesized with 1-aza-18-crown-6 macrocyclic ligand attached to styrene(dangerous matter) divinylbenzene(DVB) copolymer with crosslink of 1%, 2%, 10%, and 20% by substitution reaction. The synthesis of these resins was confirmed by content of chlorine, element analysis, and IR-spectrum. The effects of pH, time and crosslink on adsorption of metal ion by the synthetic resin adsorbent were investigated. The metal ion was showed fast adsorption on the resins above pH 3. The optimum equilibrium time for adsorption of metallic ions was about two hours. The adsorption selectivity determined in ethanol solution was in increasing order of uranium(UO22+) > lead(Pb2+) > cerium(Ce3+) ion. The adsorption was in the order of 1%, 2%, 10%, and 20% crosslink resin.
스타이렌 위험물을 함유한 Cryptand 합성수지에 의한 U(Ⅵ), Ca(Ⅱ), Ho(Ⅲ) 이온들의 흡착 및 분리
김준태(Joon-Tae Kim) 한국환경관리학회 2011 環境管理學會誌 Vol.17 No.2
1%, 2%, 및 10%의 가교도를 가진 cryptand 수지들은 클로로메틸화된 스틸렌(위험물)-1, 4-디비닐 벤젠에 1-aza-15-crown-5 거대고리 리간드를 치환반응으로 결합시켜 합성하였으며, 이들 수지로부터 흡착에 미치는 pH, 시간, 수지의 가교도 그리고 용매의 유전상수 크기에 따른 금속 이온들의 흡착 및 분리특성을 조사하였다. 금속 이온들은 pH 3 이상에서는 큰 흡착률을 보였으며, 금속 이온들의 흡착 평형시간은 약 2시간 이었다. 에탄올에서의 흡착 선택성은 UO₂²? > Ca²? > Ho³? 이었고, 흡착력은 1%, 2%, 10%의 가교도 순 이었으며, 용매의 유전상수 크기에 반비례하였다. 한편, 1% 가교도를 가진 수지에 우라늄, 칼슘, 홀뮴 혼합용액을 흡착시켜 관에 넣고 질산(pH 2.0) 용리액을 사용하여 개별분리 하였다. Cryptand resins of 1%, 2% and 10% crosslinkage with 1-aza-15-crown-5 macrocyclic ligand attached to chloromethylated styrene (a hazardous material)-1, 4- divinylbenzene (DVB) by substitution reaction were synthesized. The effect of pH, time, dielectric constant of solvent and crosslinkage density of the matrix on the adsorption and separation for metal ions was investigated. The metal ions were not adsorbed on the resins below pH 2 but above pH 3 fast adsorption behavior was showed. The optimum equilibrium time for adsorption of metallic ions was two hours. The adsorption selectivity determined in ethanol was in increasing order UO22+ > Ca2+ > Ho3+. The adsorption power was in the order of 1%, 2% and 10% -crosslinkage resin, but adsorption properties of resins decreased in proportion to the order of dielectric constant of solvents used. In addition, these metal ions could be separated in the column with 1% crosslinkage resin using nitric acid (pH 2.0) as an eluent.
OenNtn-스틸렌-DVB 수지를 이용한 우라늄(VI) 이온의 흡착
김준태(Joon-Tae Kim),노기환(Gi-Hwan Rho),강영식(Young-Sik Kang) 대한환경위생공학회 2003 대한환경위생공학회지 Vol.18 No.2
Resins have been synthesized from chlormethyl styrene 1,4- divinylbenzene(DVB with 1%, 4%. and 20%-crosslinked and macrocyclic ligand of cryptand type by copolymerization method and the adsorption of uranium(VI). nickel( n) and lutetium(Ⅲ) ions have been investigated in various experimental conditions. The correlation between the adsorption characteristics of rare earths and transition metal on the resins and stability constants of complexes with macrocyclic ligand have been examined. The uranium ion was not adsorbed on the resins below pH 2.0. but the power of adsorption of urdnium ion increased rapidly above pH 3.0. The adsorption power was in the order of 1%, 4% and 20%-crosslinked resin. but adsorptive characteristics of resins decreased in proportion to the order of dielectric constants of solvents.
1 - Aza - 12 - Crown - 4를 이용한 금속 이온 흡착제 수지 합성
김준태(Joon-Tae Kim),노기환(Gi-Hwan Roh) 대한환경위생공학회 2004 대한환경위생공학회지 Vol.19 No.3
Content of chlorine in styrene-DVB copolymer was decreased as crosslink increased and it is because as crosslink increased 1%, 2%, 5% and 10% DVB content increased and crosslink density increased and cavity was reduced. Functional group of resin almost disappeared as C-C1 peak around 700㎝-¹ was substituted with 1-aza-12-C-4 macrocyclic ligand and new peak of C-N around 1020㎝-¹ appeared, so it was confirmed that styrene-DVB copolymer and ligand were compounded. As crosslink increased in the analysis of element contents, it resulted in the reduction of nitrogen content and it is because as crosslink increased, it led to the reduction of chlorine content in the process of substitution reaction and it affected macrocyclic ligand substituted. Form of functional synthetic resin showed distortion of its particles as macrocyclic ligand was introduced to styrene-DVB copolymer and hydrogen of ligand caused substitution with chlorine element of styrene molecule.
물 소화약제로부터 OenNdien 합성수지를 이용한 Ca(Ⅱ), Zn(Ⅱ), Cu(Ⅱ) 금속 이온들의 흡착
김준태(Joon-Tae Kim),노기환(Gi-Hwan Rho) 한국환경관리학회 2007 環境管理學會誌 Vol.13 No.2
1%, 4%, 및 10%의 가교도를 가진 클로메틸스틸렌-1,4-디비닐벤젠에 OenNdien-H₄ 거대고리리간드를 공중합반응으로 결합시켜 이온교환 수지를 합성하였으며, 이들 합성수지의 확인은 염소 함량과 원소 분석 그리고 IR-스펙트럼으로 하였으며, 수지에 대한 금속 이온들의 흡착에 미치는 pH, 시간 그리고 수지의 가교도에 따른 영향들을 조사한 결과 칼슘과 아연 이온들은 pH 3 이상에서 큰 흡착율을 보였으며, 금속 이온들의 흡착 평형은 2시간 정도였다. 한편, 수용액에서 수지에 대한 흡착 선택성은 Ca²? > Zn²? > Cu²? 이온 이었고, 금속 이온의 흡착력은 1%, 4% 및 10%의 가교도 순이었다. The ion exchange resins have been synthesized from chlormethyl styrene - 1, 4-divinylbenzene(DVB) with 1%, 4%, and 10%-crosslinking and macrocyclic ligand of OenNdien-H₄ by copolymerization method and the adsorption characteristics of calcium(Ⅱ), zinic(Ⅱ) and copper(Ⅱ) metallic ions have been investigated in various experimental conditions. The synthesis of these resins was confirmed by content of chlorine, element analysis, and IR-spectrum. The effects of pH, time, and crosslink on adsorption of metallic ions were investigated. The calcium ion and zinic ion were showed fast adsorption on the resins above pH 3. The optimum equilibrium time for adsorption of metallic ions was about two hours. The adsorption selectivity determined in water was in increasing order calcium(Ca²?) zinic(Zn²?) copper(Cu²?) ion. The adsorption was in order of 1%, 4%, and 10% crosslink resin.