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Chromatographic Behavior of Cryptand[2,2] Modified Resin on Metal Cations
Suh, Moo-Yul,Eom, Tae-Yoon,Suh, In-Suk,Kim, Si-Joong Korean Chemical Society 1987 Bulletin of the Korean Chemical Society Vol.8 No.5
Cryptand[2,2] was grafted to low crosslinked styrene-divinylbenzene copolymer by substitution reaction with chloromethylated styrene-divinylbenzene copolymer. This resin was stable in concentrated acid and base, and showed a good resistance to heat. The pH, time, and concentration dependence of the adsorption of metal ions by this resin were studied. Studies on the chromatographic separation of lanthanides, $Cu^{2+}$ and $UO_2^{2+_2}$ were also carried out with various eluents. These studies demonstrate that this resin has the applicability to the preconcentration and separation of metal ions.
Suh, Moo-Yul,Eom, Tae-Yoon,Kim, Si-Joong Korean Chemical Society 1983 Bulletin of the Korean Chemical Society Vol.4 No.5
The stability constant for the complex of $UO_2^{2+}$ with a macrocyclic aminoether ligand, 1,7,10,16-tetraoxa-4,13-diazacyclooctadecane, has determined in aqueous solution. The conductivity and pH metric measurements suggest that the ligand forms a stable 1:1 complex with $UO_2^{2+}$ ion, and the complex is an ionic form, $UO_2L^{2+}$, in aqueous solution. The fact that the ligand does not form a complex with lanthanides, such as $Ce^{3+}$, <TX>$Sm^{3+}$, and $Nd^{3+}$ ions, in aqueous solution suggests a possibility of separation of the lanthanide elements from uranium matrix using the macrocyclic aminoether ligand.
비디오흉강경을 이용하여 폐절제술로 치료한 편측 미만성 폐동정맥루 1례
정종열 ( Jong Yul Jung ),임종근 ( Jong Keun Lim ),전성완 ( Sung Wan Chun ),서원나 ( Won Na Suh ),김대준 ( Dae Jun Kim ),이광훈 ( Kwang Hun Lee ),박무석 ( Moo Suk Park ),김세규 ( Se Kyu Kim ),장준 ( Joon Chang ),김성규 ( Sung Kyu 대한결핵 및 호흡기학회 2006 Tuberculosis and Respiratory Diseases Vol.61 No.6
Pulmonary arteriovenous malformations (PAVMs) are abnormal direct communications between the pulmonary arteries and veins. PAVMs may occur as either an isolated abnormality or in association with hereditary hemorrhagic telangiectasia, also called Osler-Weber-Rendu disease. The topic of PAVM has recently been extensively reviewed, but little is known about the clinical characteristics and course of patients having a diffuse pattern of the disease. Herein, is reported a case of unilateral diffuse PAVM in an 18 year old female patient, who underwent a right pneumonectomy, under a video-assisted thoracic surgery (VATS) approach, as the diffuse small pulmonary arteriovenous malformation involved the whole right lung. (Tuberc Respir Dis 2006; 61: 585-590)
Burnup Measurement of Irradiated Uranium Dioxide Fuel by Chemical Methods
Kim, Jung-Suk,Han, Sun-Ho,Suh, Moo-Yul,Joe, Kih-Soo,Eom, Tae-Yoon Korean Nuclear Society 1989 Nuclear Engineering and Technology Vol.21 No.4
Destructive methods are used for the turnup determination of an irradiated PWR fuel. One of the methods includes U, Pu, Nd-148 and Nd-(145+146) determination by an isotope dilution mass spectrometry using triple spikes (U-233, Pu-242 and Nd-150). The method involves two sequential ion exchange resin separation procedures. Pu is eluted from the first anion exchange resin column (Dowex AG 1$\times$8) with 12 M HCl-0.1 M HI mixed solution, followed by U elution with 0.1 M HCl. Nd is isolated from other fission products on the second anion exchange resin column (Dowex AG 1$\times$4) with a nitric acid-methanol eluent. Each fraction is analysed by thermal ionization mass spectrometry. The difference between Nd-148 and Nd-(145+146) method is found with an average 2.07%. The results are compared with those by the heavy element method using U and Pu isotopes and by the destructive y-spectrometric measurement of Cs-137. The dependences of isotope composition of U and Pu on burn-up, and correlation between those isotopes are illustrated graphically.