Poly(vinylbenzyl chloride-glycidyl methacrylate)/Polyethylene Composite Anion Exchange Membranes for Vanadium Redox Battery Application

Park, Min-A,Shim, Joonmok,Park, Se-Kook,Jeon, Jae-Deok,Jin, Chang-Soo,Lee, Ki Bong,Shin, Kyoung-Hee Korean Chemical Society 2013 Bulletin of the Korean Chemical Society Vol.34 No.6

Anion exchange membranes for a vanadium redox flow battery (VRB) were prepared by pore-filling on a PE substrate with the copolymerization of vinylbenzyl chloride (VBC) and glycidyl methacrylate (GMA). The ion exchange capacity, water uptake and weight gain ratio were increased with a similar tendency up to 65% of GMA content, indicating that the monomer improved the pore-filling degree and membrane properties. The vanadium ion permeability and open-circuit voltage were also investigated. The permeability of the VG65 membrane was only $1.23{\times}10^{-7}\;cm^2\;min^{-1}$ compared to $17.9{\times}10^{-7}\;cm^2\;min^{-1}$ for Nafion 117 and $1.8{\times}10^{-7}\;cm^2\;min^{-1}$ for AMV. Consequently, a VRB single cell using the prepared membrane showed higher energy efficiency (over 80%) of up to 100 cycles compared to the commercial membranes, Nafion 117 (ca. 58%) and AMV (ca. 70%).

The Korean Association of lnternal Medicine : Poster Session ; PS 1357 : Nephrology ; Age is the Strongest Effector for the Relationship between Estimated Glomerular filtration Rate and Coronary Artery Calcifi cation in Apparently Healthy Korean Adults

( Hyun Beom Chae ),( Eun Jung Rhee ),( Hae Jung Park ),( Min Kyung Lee ),( Won Seon Jeon ),( Se Eun Park ),( Cheol Young Park ),( Won Young Lee ),( Ki Won Oh ),( Sung Woo Park ) 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1

Background: Cardiovascular disease (CVD) is a major clinical problem and the most common cause of morbidity and mortality in patients with chronic kidney disease (CKD). Coronary artery calcifi cation (CAC) is a potential mechanism that explains the association between renal function and cardiovascular mortality. We aimed to evaluate the association between renal function and CAC in apparently healthy Korean subjects. Methods: In 23,617 participants in the health screening program in Kangbuk Samsung Hospital health screening program from January 2010 to December 2011, estimated glomerular fi ltration rate (eGFR) was assessed by Cockcroft-Gault equation. Coronary artery calcium score (CACS) was measured by multi-detector computed tomography (MDCT). Subjects were divided into 3 groups according to the CKD Staging system with eGFR grade; stage 1: eGFR = 90 mL/min/1.73 m2, stage 2: eGFR 60-89 mL/ min/1.73 m2, stage 3: eGFR 30-59 mL/min/1.73 m2. Results: Mean age of the participants was 41.4 years, and mean eGFR was 103.6±21.7 mL/min/1.73 m2. Hypertension and diabetes were noted in 43.7% and 5.5% of the participants, respectively. eGFR showed weakly negative but signifi cant association with CACS in bivariate correlation analysis (r=-0.076, p<0.01). Mean CACS signifi cantly increased from CKD stage 1 to 3. The proportion of subjects who had CAC signifi cantly increased from CKD stage 1 to 3. Although odds ratio for CAC signifi cantly increased from stage 1 to 3 after adjustment for confounding factors, this signifi cance was inversed when age was included in the model. Age was the strongest factor that affects CAC. Conclusions: This study performed in young Korean subjects with relatively normal renal function, age was the mostly strongest effector on the association between eGFR and the degree of CAC.

개에서 말기 외이염의 내과적 치료 증례

전민경,윤기영,최호정,정성목,송근호,이영원,박성준 忠南大學校 獸醫科大學 附設 動物醫科學硏究所 2008 動物醫科學硏究誌 Vol.15 No.1

A 8-year-o1d castrated male Shit-tzu dog was presented with chronic, severe and recurrent bilateral otitis externa. Clinical signs were stenosis, swelling, severe discharges from external auditory canal and pruritus of the ear. A diagnosis of the patient was made based on history, Physical examination, otoscopic examination, cytological examination and radiography. The dog was diagnosed to end-stage otitis externa and followed by treatment with systemic cyclosporine administration and topical solution. Clinical symptoms were resolved after 4 weeks cyclosporine therapy.

황색 포도상구균의 vancomycin 내성 원인 유전자의 동정

전준연,양영기,송민동 조선대학교 부설 유전생물공학연구소 1991 유전생물공학연구지 Vol.1 No.1

임상 분리되는 Gram 양성균인 황색 포도상구균(Staphyhcoccus aureus)에 대한 각종 학생물질의 최소 발육저지농도 측정(Minimal Inhibitory Concentration: MIC test)과 내성 pattern을 조사하였으며, 이들 균주 중 특히 vancomycin에 대하여 높은 내성을 나타내는 균주(Vancomycin resistant Staphylococcus aureus: VRSA)에 대한 vancomycin 내성원인 유전자의 탐색 및 cloning을 실시하여 vancomycm 내성기구의 연구에 필요한 조사를 수행하였다. Vancomycm에 내성인 균주(VRSA)를 고온(43.5℃) 처리하여 계대 배양을 한 다음, replica plating method에 의 해 vancomycin 감수성 균주(Vancomycin-sensitive Staphylococcus aureus: VSSA)를 얻었으며, VRSA 균수와 VSSA 균주로부터 membrane protein을 준비한 다음 SDS-poly-acrylamide gel electrophoresis(SDS-PAGE)로 전기 영동하여 그 단백질 pattern을 비교한 결과, VRSA 균주에서는 분자량(Mr: relative molecular weight)이 약 127Kadl 그리고 30Kdal 정도 되는 부위에서 vancomycin 내성에 관계되는 듯한 특이적인 단백질을 관찰할 수 있었다. 그러나 VSSA 균주에서는 이러한 단백질을 관찰할 수 없었다. 한편 이들 균주로부터 plasmid DNA를 분리한 다음 agarose gel electrophoresis하여 그 pattern을 분석한 결과, VRSA 균주에서는 약50Kb부위에서 plasmid DNA밴드가 관찰되었으나 VSSA 균주에서는 아무런 밴드도 관찰되지 않았다. 이상의 결과로 볼때 vancomycin 내성유전자는 plasmid DNA상에 존재한다고 생각되어진다. This study was carried out to study the characterization of the gene that is responsible for the vancomycin-resistant Staphylococcus aureus (VRSA) In order to obtain vancomycin-sensitive S. aureus(VSSA)from VRSA stain, vancomycin-resistant S. aureus(VRSA) was subcultured twice at the high temp.(43.5℃)and then VSSA was obtained by replicaplating method after MIC test with vancomycin in high temp. treted VRSA strain. Membrane proteins were prepared from VRSA and VSSA strain and protein patterns of those were compared bny 7.5% SDS-polyacrylamide gel electrophoresis. Only in VRSA strain appeared novel protein bands at a position about 120 Kdal, 80 Kdal and 30Kda1, but it did not appear in VSSA strain. The patterns of plasmid DNA in VRSA and VSSA strain were clearly classified. Plasmid DNA band in VSSA strain appeared at a position about 50Kb, but it did not appear any band in VSSA strain. These results suggested that plasmid DNA may be encode the gene that is responsible for vancomycin-resistance.

씨름선수의 정체성 형성에 관한 생애사적 연구

전민주,박기동 江原大學校附設體育科學硏究所 2003 江原大學校附設體育科學硏究所論文集 Vol.- No.26

The purpose of this research is to investigate the identity development process of an athlete in his life history and to understand its constituent elements as well as the interaction of them. In the study on the socialization of mountaineers and Rugby players, Donnely and Young(2001) divided the process into four stages; Pre-socialization stage, Selection and recruitment stage, Socialization stage, Acceptance and ostracism stage. One Ssireum player from H Univ. is selected as a subject of study through Ideal Case Selection which is one of Criterion-based Selection methods. The relevant materials are collected by various means such as in-depth interview, participatory observation, documentary study. According to the general procedure of quality analysis, the data can be arranged through transcription and categorical coding process. The methods of inter-members' checking and peer debriefing are put to use in order to verify the reliability and validity of the data and to validate their trustworthiness and refinement. The results of the study are classified by the question of study as below. What is the conditions of identity as a Ssireum player? Through what process does a man build up the identity? The identity formation of a Ssireum player is formed not by an individual and one-way process but by the mutual relationship between the informer and his surrounding culture, and the relationship between him and fellow members. Furthermore, the mode of change is not simple but consistent and active. The identity of a player become established by going through Pre-socialization stage, Selection and recruitment stage, Socialization stage, Acceptance and ostracism stage, respectively. Pre-socialization stage is one within which a man does not yet become a player. Therefor, this stage is less systematic and less organized than the later stages and can be said to be a germinal stage. Selection and recruitment stage is an introductory one in which a player is initiated into a certain culture by way of the encouragement of his teacher. To become a member of an athlete club is to experience the Ssireum practice other than before. Socialization stage is a phase of new role performance and new identifications. A player associates with the other members and experiences consistent athlete practices through all this phase. He adapts himself to the school life in which he determines his aim. He inherits the others experiences and skills from which he forms a new cultural history on his own. The informer of this study underwent the early three stages and their entire features is almost typical. As a senior student, he came to the fourth stage, namely, Acceptance and ostracism stage, in which he tries to escape from the uniform society of the insistent challenges. As the school, he thinks, emphasized the public relations and the actual results, he also considered the school as a means to personal success. Then, only in this last phase, he feels sorry for his stipulation in which he regards himself only as an athlete. He tries ardently to restore the spirit of the student.

씨름선수의 정체성 형성과정 가운데 격리화 양상에 관한 생애사적 연구

전민주,박기동 한국체육사학회 2004 체육사학회지 Vol.13 No.-

The purpose of this research is to investigate the identity development process of an athlete in his life history and to understand its constituent elements as well as the interaction of them. One Ssireum player from H Univ. is selected as a subject of study through Ideal Case Selection which is one of Criterion-based Selection methods. The relevant materials are collected by various means such as in-depth interview, participatory observation, documentary study. According to the general procedure of quality analysis, the data can be arranged through transcription and categorical coding process. The methods of inter-members' checking and peer debriefing are put to use in order to verify the reliability and validity of the data and to validate their trustworthiness and refinement. The results of the study are classified by the question of study as below. There are influential elements on the identity formation such as human relationship, group consciousness, role-playing, seniors' attitudes, conventional manners. The relationship between these elements and his own consciousness makes shape his identity, forming his self image directly and indirectly. As one member of an athlete club, the Ssireum player becomes separated from common students in respect of time, space, and group associates, which are determining elements of athlete's identity formation The athlete not only receives his images from without but also substitutes them with his own images and undergoes the process of refinement and accommodation. The kind of trainers, the nature of an athlete group he turns to, and the feature of the role-playing performance are all affecting the identity formation The surrounding circumstances, which include practice establishment, living environment and management of personal behavior, are integral, too. Athlete's self-realization is closely related with the surrounding cultural frame and the discrimination mechanism within it.

창원교육 구성원들의 가정교육 문제인식과 요구에 관한 실태조사

김기민,박종흡,양병한,박희창,전영길 창원대학교 학생생활연구소 1997 학생생활연구 Vol.10 No.-

AO법에 있어서 혐기조 구성의 변화에 따른 인제거 양상

김전희,백순기,송민종 東新大學校 工業技術硏究所 1998 工業技術硏究 Vol.4 No.-

The Anaerobic-Oxic process is a modified activated sludge process that combines Anaerobic and Oxic section in sequence. This process has a merit which is the simultaneous removal of rrganic matter, nitrogen and phosphorus. The conclusions are as follows. ; The COD_(Cr) removal efficiency by the Anaerobic-Oxic process was 95.8%. Almost all of the COD_(Cr) was removed in an anaerobic tank. The COD_(Cr) removal rate by the Anaerobic-Oxic process was little better than that of standard activated sludge process(89.1%). The PO₄-P removal rate by the Anaerobic-Oxic process was 49.48% showing slightly higher dfficiency than that of standard activated sludge process(33.1%). It is considered that the Anaerobic-Oxic process is effective in 'the removal of phosphorus. It can be seen that phosphorus removal microbes in MLSS released phosphorus in anaerobic tank and phosphorus was up taken into sludge in aerobic phase.

오존노출이 실험적으로 유발된 알레르기성 비염에 미치는 영향

전우진,변상내,김용민,김병국,나기상,박찬일 대한이비인후과학회 2000 대한이비인후과학회지 두경부외과학 Vol.43 No.11

고급산화기법을 이용한 수중의 BTXs 처리 특성

김전희,송민종,백순기 동신대학교 환경연구소 1999 환경연구 Vol.4 No.1

본 연구에서는 광산화공정의 실험으로 자외선과 산화제에 의한 BTXs의 제거특성을 파악하기 위하여 실험장치를 실험실규모로 제작하여, 광원의 세기, 산화제의 종류 및 주입량(오존 및 과산화수소) 둥을 변화시키면서 접촉시간에 따른 BTXs의 처리효율을 분석한 결과는 다음과 같다. UV 강도변화에 따른 BTXs의 제거특성은 UV, 강도가 증가함에 따라 광분해가 향상되었고,특히 UV 강도가 30W가 15W일 때 보다 7.9%의 상승효과를 보인 xylene이 제거가 잘되었다. UV/H202 공정에서 H2O2의 주입량이 200 mg/L일 때 제거효율이 약간 높은 효율을 보였으며, UV와 H2O2를 이용한 처리에서 xylene > toluene >benzene의 순으로 제거효율이 나타났고, UV/H202/03 공정에서 H202/03의 비가 2일 때 처리대상물질의 제거효율이 높은 것으로 나타났다, 특히 toluene의 제거효율은 H202/03의 비가 3일 경우에 91.5%로 처리가 잘되는 것으로 나타났다. Laboratory experiments were performed to investigate removal efficiency of BTXs in water for advanced oxidation processes. Parameters using experiment is change of UV intensity, oxidant(H₂0₂, 0₃). The conclusions are as follows. ; Effect of light intensity on the rate of BTXs removal was investigated by three type lamps within the reactor. When light intensity to inscrease, the BTXs removal efficiency to increase. And treatment of BTXs with light had an effect on xylenes. Consequently, simultaneous treatment of UV/H₂0₂/0₃ was more effective than individual treatment of 0₃, H₂0₂.