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월성 원전발생 폐수지로부터 제거된 $^{14}C$ 핵종의 인산용액을 이용한 $^{14}CO_2$로의 기체화 특성
양효연,원장식,최영구,박근일,김인태,김광욱,송기찬,박환서,Yang, Ho-Yeon,Won, Jang-Sik,Choi, Young-Ku,Park, Geun-Il,Kim, In-Tae,Kim, Kwang-Wook,Song, Kee-Chan,Park, Hwan-Seo 한국방사성폐기물학회 2006 방사성폐기물학회지 Vol.4 No.4
Removal characteristics of $H^{14}CO_3$ ion from IRN-150 mixed resin contaminated with $^{14}C$ radionuclide and a gasification behavior of $^{14}C$ radionuclide to $^{14}CO_2$ were investigated. The stripping solutions used for the removal of $^{14}C$ from spent resin were $NaNO_3,\;Na_3PO_4,\;NH_4H_2PO_4,\;H_3PO_4$. The influence of stripping solution concentration on the desorption characteristics of inactive $HCO_3$ ion into stripping solution from IRN-150 mixed resin and the gasification of this ion to $CO_2$ was analyzed. The gasification behavior to $CO_2$ by using NaOH, $HNO_3$, HCl was also compared to that of phosphate solution. Real spent resin stored in Wolsung nuclear power plant was used to evaluate the gasification characteristics of $^{14}C$ radionuclide to $^{14}CO_2$. Gamma radionuclides such as $^{137}Cs,\;^{60}Co$ in residual striping solutions after desorption experiment were analyzed.
IRN-150 혼상수지의 이온 흡착특성 및 폐수지로부터 탈착용액을 이용한 $^{14}C$ 핵종의 제거 특성
양호연,원장식,최영구,박근일,김인태,김광욱,송기찬,박환서,Yang, Ho-Yeon,Won, Jang-Sik,Choi, Young-Ku,Park, Geun-Il,Kim, In-Tae,Kim, Kwang-Wook,Song, Kee-Chan,Park, Hwan-Seo 한국방사성폐기물학회 2006 방사성폐기물학회지 Vol.4 No.4
Spent ion-exchanged resin generated from various purification systems in CANDU reactor was contaminated with high activity of $^{14}C$ radionuclide. This paper describes the results of fundamental study to develop the applicable technology for the treatment of this spent resin. Based on the adsorption capacity of inactive $HCO_3$ ion and other anions on IRN-150 mixed resin, the removal characteristics of $HCO_3$ ion adsorbed on to IRN-150 by various stripping solutions were evaluated. Maximum adsorption amount of the $HCO_3$ ion onto IRN-150 raw resin was about 11 mg-C/g-resin which agrees with the theoretical adsorption amount of this resin. Adsorption affinity of various anions such as $CS,\;CO,\;Na\;NH_4$ was analyzed in single and multi-component systems. From the results of removal characteristics of the $HCO_3$ ion adsorbed on IRN-150 by various stripping solutions, $NH_4H_2PO_4$ stripping solution is more effective than $NaNO_3,\;Na_3PO_3$ solutions for the complete removal of $^{14}C$ radionuclide from the IRN-150 spent resin.
이상적인 자기 상관 특성을 갖는 이진 시퀀스의 Trace 함수 표현에 기초한 부울 함수 표현
원장식,정근열,박진수 청주대학교 산업과학연구소 1998 産業科學硏究 Vol.16 No.-
Pseudorandom sequences of period N(=2^(m)-1) with ideal autocorrelation apply to spread spectrum communication systems, radar systems and CDMA systems and some of well-known examples are m-sequences. These sequences(m-sequences, GMW sequences, Legendre sequences, Hall's sextic residue sequences, and so forth) are best described in terms of trace functions Generally, binary sequences of period N(=2^(m)-1) are expressed as Trace function on the GF(2^(m), but Trace function representation is so difficult that we can't find properties of sequences. By the way, binary sequences of period N(=2^(m)-1) can be expressed as the combination of m-variable Boolean function, f(x_(l) ,x_(2), ,x_(m)) In this case, properties of sequences can be found easily. So I implemented the Boolean function representation for above mentioned the family of sequences with relation that the property of Trace function. So far, the study to find binary pseudonoise sequences with ideal autocorrelation property is being done so we need the procedure to transform sequences into Boolean function.