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표재성 방광암환자에서 방광내 BCG 주입 후 발생한 간질성 폐렴 1례
이수성 ( Lee Su Seong ),정일형 ( Jeong Il Hyeong ),김기욱 ( Kim Gi Ug ),홍현표 ( Hong Hyeon Pyo ),이성호 ( Lee Seong Ho ),양대열 ( Yang Dae Yeol ),김성용 ( Kim Seong Yong ),김하영 ( Kim Ha Yeong ),모은경 ( Mo Eun Gyeong ) 대한결핵 및 호흡기학회 2001 Tuberculosis and Respiratory Diseases Vol.50 No.3
Gyeong Il Moon,Seong Ho Yoo,Ho Yeon Yang,Dong Hoon Oh 한국방사성폐기물학회 2022 한국방사성폐기물학회 학술논문요약집 Vol.20 No.2
The number of nuclear power plants that are permanently shut down or decommissioned is increasing worldwide, and accordingly, research is being conducted on an appropriate method for disposing of radioactive waste generated during the decommissioning of nuclear power plants. In the case of waste liquid generated during the decommissioning of nuclear power plants, it is important not only to efficiently reduce waste but also to secure the suitability of disposal. One of the solidification treatment methods for radioactive waste is cement solidification, but since cement solidification has poor solidification properties and generates a large amount of waste, improvement activities have been pursued. This study aims to develop high-performance cement-based materials and solidification treatment technology for solidification of liquid radioactive waste generated during nuclear decommissioning in order to improve the problems of cement solidification treatment method. For the development of polymer cement, epoxy resin and polyamine/amide mixed type and general Portland cement were mixed in various ratios. The most appropriate mixing ratio was 4.5:2, which showed the highest compressive strength. A simulated waste liquid was prepared by referring to the preliminary decommissioning plan of Shin-Kori Units 5 and 6, and it was dried and made into granules. Polymer cement was injected into a drum filled with granules by vacuum pressure to prepare a waste form matrix. In the solidification process, granules made by drying the waste liquid were used, and the solidification agent was filled in between the granules, so the total volume of solid radwaste was reduced compared to the conventional cement solidification treatment method. As a result, the amount of waste decreased to about 1/3, and the volume reduction rate increased by about 2.2 times. The compressive strength of 3,243 psi was confirmed in the disposability performance test for the manufactured solid samples. The compressive strength after the thermal cycling test, irradiation test, microorganism test, and immersion test was 2,257 psi, 2,306 psi, 4,530 psi, and 2,263 psi, respectively, exceeding the acceptance criteria of 500 psi. The leaching index was 7~13, and no free standing water was generated.
鄭炅樂,金成種,張京桓,卞潤燮,梁榮錫,鄭寅洙 전북대학교 공업기술연구소 1990 工學硏究 Vol.21 No.-
The production of TiO_2 ultrafine particles from TiCl_4 and oxygen by the vapor phase reaction was investigated at 850~1000℃, whith an emphasis on the effects of its operation on the particle size distribution of the products. The results were as follows: 1) The average particle size of TiO_2 was 0.191~0.213μm and its particles were single crystals. 2) The average particle size did smaller with the increasing of reaction temperature. 3) The average particle size of TiO_2 did smaller with the increasing in the oxygen concentration and decreasing in the TiCl_4 concentration. 4) The weight fraction of rutile in the TiO_2 particles gradually increased to 900℃ and increased largely at 1000℃. The weight fraction of rutile in TiO_2 particles attached the reaction tube wall increased rapidly because of the effects of heat treatment. 5) The weight fraction of rutile in the TiO_2 particles decreased with the increasing of the oxygen and TiCL_4 concentration.
Mesalazine 치료 중인 궤양성 대장염 환자에서 동반된 미세변화 신증후군
양종오 ( Yang Jong O ),김성은 ( Kim Seong Eun ),이상주 ( Lee Sang Ju ),박기현 ( Park Gi Hyeon ),장윤경 ( Jang Yun Gyeong ),서광선 ( Seo Gwang Seon ),이강욱 ( Lee Gang Ug ),신영태 ( Sin Yeong Tae ) 대한신장학회 2001 Kidney Research and Clinical Practice Vol.20 No.6
Mesalazine has been widely prescribed for the treatment of inflammatory bowel disease. In renal disease associated with inflammatory bowel disease, nephrolithiasis and amyloidosis are most common, and obstructive uropathy, acute renal failure, glomerular abnormalities and interstitial nephritis due to drug may be occur. However, glomerulonephritis presenting as nephrotic syndrome in patients with ulcerative colitis is very rare. We present a case of minimal change nephrotic syndrome probably associated with mesalazine treatment in patient with ulcerative colitis. A 31-year-old man was admitted with generalized edema and proteinuria. He had been initially treated by sulphasalazine and then received mesalazine for 6 months, recently. Kidney biopsy revealed minimal change disease. Mesalazine was discontinued immediately and prednisolone(1 mg/kg, P.O.) was prescribed. Eight weeks after prednisolone treatment, proteinuria disappeared and patient recovered completely.
정경락,변윤섭,김성종,장경환,양영석,정인수 전북대학교 공업기술연구소 1991 工學硏究 Vol.22 No.-
Anatase TiO_2 particles prepared by experiment were used to study change of crystal structure by calcination temperature. The results were as follows. Crystallite size of anatase TiO_2 particles increased with calcination temperature. The rate of increasing the crystallite size of anatas TiO_2 particles was decreased below 700℃ and was markedly increased above 700℃. Unit cell volume of TiO_2 was expanded at low temperature and was contracted at high temperature. This result means that the growth of crystallite size was occurred in the C direction.
정경락,변윤섭,김성종,장경환,양영석,정인수 전북대학교 공업기술연구소 1991 工學硏究 Vol.22 No.-
본 연구는 염소법으로 TiCl_4와 O²를 기상반응시켜 TiO²초미립자를 제조하여 생성된 Anatase 형 TiO_2를 대상으로 Anatase-Rutile의 상전이, 첨가제 및 기체 주위조건의 영향을 연구하였다. 연구결과를 요약하면 다음과 같다. 1. Anatase-Rutile의 상전이 반응에서 주된 변수는 온도이며, 속도식은 Avrami식의 결정생성과 성장모델을 따른다고 할 수 있으며, 활성화 에너지는 70kcal/mole이었다. 2. 첨가제 및 기체 주위조건의 영향에 대해서 CuO의첨가는 전이를 촉진시키는 역학을 하였으며, 진공에서는 억제시키는 것으로 나타났다. 3. Anatase형에서 Rutile형으로의 상전이 메카니즘은 Rutile핵 생성 자리가 될 수 있는 외부이온의 확산 또는 기체 주위조건의 영향에 의해 음이온 공백을 형성하고, 음이온 공백은 티타네이트 화학물을 생성한다. 이런 단계를 거치면서 Anatase형 안에서 격자결함을 유발시켜 Rutile형으로의 전이에 영향을 미치는 것이라 할 수 있다.
低 濃度 化學 際染 工程에서 金屬 이온의 이온交換 特性
鄭炅樂,梁榮錫,黃成太 전북대학교 공업기술연구소 1989 工學硏究 Vol.20 No.-
Removal of metal ions in solution by use of ion exchange resin in a column is a very important step to attain high efficiency in the decontamination process. However, organic acids of the decontamination solution complex metal ions and this complexation decrease the apparent affinity of the resin toward metal ions. In light of this, some experiments were carried out on the Amberlite IRN-77 cation resin with cobalt and iron to gain a better understanding of the complexaion effects on the ion exchange process. Further, single and multi-component nonlinear equilibrium relationships of these metal ions were established and evaluation was made using experimental results.
Reversible Regulation of Enzyme Activity by pH-Responsive Encapsulation in DNA Nanocages
Kim, Seong Ho,Kim, Kyoung-Ran,Ahn, Dae-Ro,Lee, Ji Eun,Yang, Eun Gyeong,Kim, So Yeon American Chemical Society 2017 ACS NANO Vol.11 No.9
<P>Reversible regulation of enzyme activity by chemical and physical stimuli is often achieved by incorporating stimuli-responsive domains in the enzyme of interest. However, this method is suitable for a limited number of enzymes with well-defined structural and conformational changes. In this study, we present a method to encapsulate enzymes in a DNA cage that could transform its conformation depending on the pH, allowing reversible control of the accessibility of the enzyme to the surrounding environment. This enabled us to regulate various properties of the enzyme, such as its resistance to protease-dependent degradation, binding affinity to the corresponding antibody, and most importantly, enzyme activity. Considering that the size and pH responsiveness of the DNA cage can be easily adjusted by the DNA length and sequence, our method provides a broad impact platform for controlling enzyme functions without modifying the enzyme of interest.</P>