• Journal of Korean Society of Environmental Engineers
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• v.39 no.6
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• pp.325-331
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• 2017

Adsorption experiments of carbon dioxide were performed on ZSM5 and Molecular Sieve 13X (MS13X) impregnated with Monoethanol Amine (MEA). Adsorption efficiency of $CO_2$ was investigated in a U type packed column with GC/TCD. The adsorption capacities of adsorbents are estimated in the temperature range of $30-80^{\circ}C$. The modified adsorbents was characterized by BET surface area, $N_2$ adsorption/desorption isotherms, X-ray diffraction and FT-IR. Surface analysis results showed that the impregnation method did not affect the crystallinity of any adsorbents. BET surface area of the MS13X impregnated amine decreased to $19.945m^2/g$ from $718.335m^2/g$. These reults showed that amine molecules were filled with the pore volume in MS13X, as a results restricting access of nitrogen into the pores. The MEA modified MS13X showed improvement in $CO_2$ adsorption capacity over the ZSM5 impregnated with MEA. The MS13X-MEA showed the highest adsorption capacity due to physical adsorption and chemical adsorption by amino-group content. This results also showed that adsorption capacity of MS13X-MEA increases with the temperature range of $60-80^{\circ}C$ compared with pristine MS13X.

• Korean Journal of Medicinal Crop Science
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• v.9 no.1
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• pp.62-67
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• 2001

This study was carried out to investigate the optimum composition and concentration of medium for the acclimation of the shoots derived from bioreactor culture of Scrophularia buergeriana. Rooting and growth of the shoots cultured in bioreactor for 4 weeks were better on liquid full strength MS medium while one-tenth of MS medium was good for rooting and growth of the shoots cultured in bioreactor for 6 weeks. Leaf expansion was more effective in the shoots cultured for 6 weeks on solid MS medium than in those cultured for 4 weeks. No leaf expanded in liquid medium. Vitrification rate was higher in full strength solid MS medium than in half strength MS medium. It is concluded that acclimation of the shoots is more effective on the half strength solid MS medium containing 1.2% agar.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.19 no.1
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• pp.143-158
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• 1994

X.435 is the EDI communication protocol published by CCITT and ISO/IEC in 1990. The message types and abstract services of EDI-MS are specified in X.435 recommendation. In this paper, the design methodology on implementation of MSIB in the case that MHS-MS is required to be extended into EDI-MS has been studied. The design methodology presented in this paper is the one using the mapping function of the object relation. This methodology considers the EDI message types and characterictics. The proposed design methodology han an advantage that is able to design the component tables of MSIB satisfying the third normal form and it does not require the normalization processing. The MSIB constructed by the proposed method can store and retrieve multi-values efficiently.

• Proceedings of the Materials Research Society of Korea Conference
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• 1998.08a
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• pp.51.1-51
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• 1998

• Food Science and Biotechnology
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• v.16 no.1
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• pp.104-109
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• 2007

A multiplex polymerase chain reaction (PCR) method was developed to simultaneously detect three varieties of genetically modified (GM) canola. The construct-specific primers were used to distinguish the following three varieties of GM canola; GT73, MS8xRF3, and T45, using multiplex PCR. The FatA (fatty acyl-ACP thioesterase) gene was used as an endogenous canola reference gene in the PCR detection. The primer pair Canendo-FIR containing a 105 bp amplicon was used to amplify the FatA gene and no amplified product was observed in any of the 15 different plants used as templates. The GT73-KHUF1/R1 primer recognized the 3'-flanking region of GT73, resulting in an amplicon of 125 bp. The Barstar-F1/MS8xRF3-R primer recognized the junction region of bars tar and the NOS terminator introduced into MS8xRF3, resulting in a 162 bp amplicon, and the T45-F2/R2 primer recognized the junction region of PAT and the 35S terminator introduced into T45, resulting in an amplicon of 186 bp. This multiplex PCR allowed for the detection of construct-specific targets in a genomic DNA mixture of up to 1% GM canola containing GT73, MS8xRF3, and T45.

• Journal of the Korean Magnetics Society
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• v.10 no.3
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• pp.133-138
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• 2000

We have investigated some crystallographic, magnetic, and transport properties of the first colossal magnetoresistive compounds $La_{1-x}Ba_{x}MnO_3(0\leq\chi\leq$1)$(5\;K\leqT\leq360K,-5T\leqH\leq5T$ and resistivity $(100K\leqT\leq350K$measurements. $La_{1-x}Ba_{x}MnO_3$ were found to be ferromagnetic for all x.The $La_{1-x}Ba_{x}MnO_3$were found to be insulating for x< 0.2, metallic for 0.20.5. The magnitude of saturation magnetization (Ms) increased until x=1/8 and had theoretical maximum Ms for 0.13$\sfrac{3}{8}$ and had a constant value of 335~340 K for x>$\sfrac{3}{8}$. For $x\geq0.5$ the $La_{1-x}Ba_{x}MnO_3$ samples showed a percolation-type conduction behavior and enhanced low field magnetoresistance caused by simultaneous occurrence of the chemical/magnetic phase separation.

• Korean Journal of Crystallography
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• v.9 no.1
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• pp.53-63
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• 1998

The Cd1-xZnxS thin films were grown on the Si(100) wafers by a hot wall epitaxy method (HWE). the source and substrate temperature are 600℃ and 440℃, respectively. The crystalline structure of epilayers was investigated by double crystal X-ray diffraction (DCXD). Hall effect on the sample was measured by the van der Pauw method and the carrier density and mobility dependence of Hall characteristics on temperature was also studied. In order to explore the applicability as a photoconductive cell, we measured the sensitivity (γ), the ratio of photocurrent to darkcurrent (pc/dc), maximum allowable power dissipation (MAPD), spectral response and response time. The results indicated that the best photoconductive characteristic were observed in the Cd0.53Zn0.47S samples annealed in Cu vapor comparing with in Cd, Se, air and vacuum vapour. Then we obtained the sensitivity of 0.99, the value of pc/dc of 1.65 × 107, the MAPD of 338mW, and the rise and decay time of 9.7 ms and 9.3 ms, respectively.

• Journal of Korean Society for Geospatial Information Science
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• v.16 no.1
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• pp.3-12
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• 2008

This research is to construct wireless internet DGPS using MS Visual Basic Active X control for LBS. The coordinate correction method was used in this system because of convenience of both direction communication on Web. The PictureBox control and bitblt function were used in coordinate display module. The MS Comm control, MS Winsock control (TCP/IP), MS CommonDialog control, MS Sysinfo control were used in internet DGPS communication module and published on Web. Realtime internet DGPS were tested using the system which developed in this study and near realtime monitoring through this system could be performed.

• Journal of Magnetics
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• v.2 no.2
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• pp.38-41
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• 1997

Spinel ferrite thin films Fe3-x MnxO4 (x=0.000, 0.006, 0.0010, 0.015, 0.023) were prepared on the coverglass by ferrite plating technique. To investigate the uniaxial anisotrpy of the samples, the saturation and effective magnetization of the thin films were measured by VSM(vibrating sample magnetometer) and FMR(ferromagnetic resonance) measurements respectively. The spectroscopic splitting g factor were estimated from the ferromagnetic resonance curves. For x=0.000, 0.006, the effective magnetization was measured of temperatures form T=77 K to T=300 K. The results were analyzed in terms of Bloch's law Ms(T) = Ms(0) (1-BT3/2-CT5/2). The Bloch coefficient B, C were determined by fitting. Ms(0) was obtained by extrapolating Meff to 0 K. From this result, the spin wave stiffness constants D was also determined.

• Journal of Plant Biotechnology
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• v.34 no.3
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• pp.263-269
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• 2007

To establish a optimum culture condition in vitro for production of seedlings in Wasabia japonica, the effects of salt strength, sucrose concentration, and $NH_4/NO_3$ ratio on the shoot growth in MS medium were investigated. The full strength of MS medium was the best condition for shoot growth, and in $1/4{\sim}1/2x$ or 2x MS medium the growth was significantly suppressed. Growth of shoots was enhanced when sucrose was added in MS medium after 2 weeks of culture, and the best result was found at 3% sucrose addition. ${NH_4}^+/{NO_3}^-$ ratio of 10:50 gave the highest biomass of shoot in the liquid culture with MS medium, and increasing the ${NH_4}^+$ ratio in the medium significantly reduced the growth of shoot.