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정철수,김영일,황덕기,이용진,박동원 동아대학교 공과대학부설 생산기술연구소 1998 生産技術硏究所硏究論文集 Vol.3 No.1
By use of hydrophobic hollow fiber membrane module, this study examines the value of Kw(overall mass transfer coefficient) on Na^+, and used Di-2-ethylhexylphosphonic acid mono-2-ethylhexyl ester(EHPNA), Dodecyl-1,1,3,3,5,5-hexa-methyl hexylamine(LA-2), as extractant. We also shown the effect of additive(Cl^-, C_8H_17OH) and mixed extractant(Tri-n-octylphosphineoxide(TOPO)). LA-2 separated well by increased concentration of HCl and EHPNA decreased. LA-2 shown better separation ratio at compare EHPNA with LA-2. The effect of Kw vs. count ion(Cl^-) was shown that Kw increased by increased concentration of Cl^-, in effect of C_8H_17OH was weak.
미세조류 배양을 이용한 부영양호 내 수질 개선 기술 개발
김기현(Ki-Hyun Kim),강성모(Sung-Mo Kang),조용희(Yonghee Cho),전상현(Sanghyun Jeon),김준호(Jun-Ho Kim),박한울(Hanwool Park),이윤우(Yunwoo Lee),정정호(Jeongho Jeong),임상민(Sang-Min Lim),이철균(Choul-Gyun Lee) 한국해양바이오학회 2018 한국해양바이오학회지 Vol.10 No.2
There are many eutrophic lakes by point and non-point pollution sources such as industrial waste water, domestic raw sewage, and mucks. The eutrophic lakes not only cause algal blooms but also destroy the ecosystem in the lakes due to high nutrient concentrations. The purpose of this study was to improve water quality in eutrophic lakes by cultivating microalgae using photobioreactors (PBRs) with selectively permeable mesh (SPM), supplying nutrients in the lake and inhibiting cell leakage by diffusion and water permeability. Chlorella vulgaris, was cultivated using PBRs with SPM installed in Inkyung Lake located in Inha university, Incheon, Korea. When cultivating C. vulgaris, 8.3 g/㎡/day of average biomass productivity was obtained at 3 days. Furthermore, concentrations of total nitrogen and phosphorus were reduced by 35.7% and 84.2%, respectively, compared to initial condition and water quality in eutrophic lake was improved to oligotrophic environment. These results suggest that microalgal cultivation using PBRs with SPM in the lake could produce microalgal biomass as well as improve water quality by decreasing nutrient concentrations.
Kwon, Yu-Mi,Jung, Ki-Hwan,Choi, Go-Eun,Shin, A-Rum,Lee, Byung-Su,Won, Choul-Jae,Kim, Woo-Sik,Shin, Sung-Jae,Park, Jeong-Kyu,Chang, Chul-Hun L.,Kim, Hwa-Jung 대한미생물학회 2009 Journal of Bacteriology and Virology Vol.39 No.4
It is important to identify and to test serologically active antigens, so as to devise a cocktail of the best antigens or peptides. We searched for antigens that have serodiagnostic utility using two-dimensional fractionation of sonic extracts from Mycobacterium tuberculosis and probing with pools of sera from healthy subjects and patients with tuberculosis (TB). Reactive protein spots with patient sera were identified by tandem mass spectrometry. Three proteins, Rv0652, Rv2626c, and Rv3418c, which have not previously been described as serologic targets, were identified. Rv0652 protein among them was expressed in Escherichia coli and serum IgG antibodies against this antigen were measured in 150 patients with pulmonary TB and in 115 healthy subjects. The sensitivity and specificity were 39% and 92%, respectively. These results suggest that a newly identified protein, Rv0652 may be a valuable candidate to be included in a cocktail test kit for TB diagnosis.
Kim, Goun,Kim, Ji Man,Lee, Choul-Ho,Han, Jeongsik,Jeong, Byung-Hun,Jeon, Jong-Ki American Scientific Publishers 2016 Journal of Nanoscience and Nanotechnology Vol.16 No.9
<P>Highly nanoporous manganese oxides, such as meso-MnO2 and meso-Mn2O3, are synthesized using nanoporous silica KIT-6 as a hard template via nano-replication method. Manufactured ordered nanoporous materials exhibit significant properties, such as large and uniform pore sizes, high surface area and pore volume, and well-defined pore topologies. The catalytic performance of the synthesized materials during the repetitive decomposition of hydrogen peroxide is also examined in a specially-designed pulse-injection reactor. In comparison of catalytic decomposition of high-purity hydrogen peroxide, the decomposition activity of nanoporous MnO2 was better than that of bulk MnO2, which can be attributed to larger surface area of nanoporous MnO2 than that of bulk MnO2. It was confirmed that nanoporous MnO2 is a better catalyst in terms of its catalyst life in comparison with nanoporous Mn2O3.</P>