• The Korean Journal of Archival Studies
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• no.45
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• pp.5-50
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• 2015

In 2012, the International Council on Archives(ICA) distributed AtoM public release, an archival description software based on web, for free to support small archival institutions. The purpose of AtoM project was to let a single or multiple repositories describe archival materials based on ICA descriptive standards and access via a web browser. The value of AtoM project is to promote actual business experience by sharing technical expertise and form active community between users and developers. Recently, there is a growing interest in open source software in the field of domestic record management. This interest is to not only reduce cost, but to escape technology dependencies and to address requirements on the field. The critical mind of this study lies in the fact that there is no practical methodology to establish AtoM system. Even when using AtoM itself, basic tasks such as the migration of the existing data or the improvement of user interface are required. That is why this study suggests the process and methodologies to establish and customize archival information system based on AtoM software.

• Applied Chemistry for Engineering
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• v.21 no.3
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• pp.311-316
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• 2010

This study aimed to prepare antimony-doped tin oxide (ATO) dispersion with high stability. The methods to achieve this goal were sought by investigating the changes of ATO particle size, size distribution, dispersion property as wet ball milling treatment time increased. And the changes of wet ball milled ATO dispersion property were also investigated, as pH increased. The changes of ATO particle size and size distribution, according to wet ball milling treatment time were evaluated with laser diffraction particle size analyzer and scanning electron microscope (SEM). The changes of ATO dispersion property, as wet ball milling treatment time and pH increased, were evaluated with zeta potential analysis and Turbiscan. By 60 min wet ball milling treatment time, ATO particle size decreased and size distribution became narrower, as the treatment time increased. After 60 min milling, the ATO particle size decreased to less than 30% of the initial size and the size distribution was narrowed to $0.1{\sim}5{\mu}m$ from $1{\sim}35{\mu}m$. However, more than 60 min milling, ATO particles aggregated and the particle size increased. ATO dispersion stability also increased as the treatment time and pH increased because the reduced particle size increased particle surface energy and repulsion between particles and the increased pH enhanced particle surface ionization. Hence, after proper length of wet ball milling treatment, highly stable ATO dispersion can be prepared, as increasing pH of the dispersion.

• The Korean Journal of Archival Studies
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• no.43
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• pp.5-42
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• 2015

Korean wave 3.0 is focused on 'K-Culture' which includes traditional culture, cultural art as well as existing culture contents as a keyword. It considers everything about Korean culture as materials of Korean wave culture contents. Since Korean wave culture contents reflect contemporary social aspect, it needs to preserve those contents as archives and records which have the important value of evidence. With this social environment, this study aims to implement RMS based on AtoM that manages various kinds of Korean wave culture contents through analysis of management situation of those materials. Recently, it is in progress individually to manage them through organizations dealing with korean cultures such as K-Pop, K-Food, K-Movie. However, it has problems in accumulating information and reproducing high quality contents because of lack of coordination among organizations. To solve the problems, this study proposed RMS based on open source software Access to Memory(AtoM) for managing and recording Korean wave culture contents. AtoM provides various functions for managing records and archives such as accumulation, classification, description and browsing. Furthermore AtoM is for free as open source software and easy to implement and use. Thus, this study implemented RMS based on AtoM to methodically manage korean wave culture contents by functional requirements of RMS. Also, this study considered contents relating K-Food as an object to collect, classify, and describe. To describe it, this study selected ISAD(G) standard.

• Molecules and Cells
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• v.26 no.2
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• pp.158-164
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• 2008

Arsenic trioxide (ATO) affects many biological processes such as cell proliferation, apoptosis, differentiation and angiogenesis. L-buthionine sulfoximine (BSO) is an inhibitor of GSH synthesis. We tested whether ATO reduced the viability of lung cancer A549 cells in vitro, and investigated the in vitro effect of the combination of ATO and BSO on cell viability in relation to apoptosis and the cell cycle. ATO caused a dose-dependant decrease of viability of A549 cells with an $IC_{50}$ of more than $50{\mu}m$. Low doses of ATO or BSO ($1{\sim}10{\mu}m$) alone did not induce cell death. However, combined treatment depleted GSH content and induced apoptosis, loss of mitochondrial transmembrane potential (${\Delta}{\Psi}_m$) and cell cycle arrest in G2. Reactive oxygen species (ROS) increased or decreased depending on the concentration of ATO. In addition, BSO generally increased ROS in ATO-treated A549 cells. ROS levels were at least in part related to apoptosis in cells treated with ATO and/or BSO. In conclusion, we have demonstrated that A549 lung cells are very resistant to ATO, and that BSO synergizes with clinically achievable concentration of ATO. Our results suggest that combination treatment with ATO and BSO may be useful for treating lung cancer.

• Journal of the Korean Electrochemical Society
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• v.11 no.3
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• pp.141-146
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• 2008

Electrocatalytic activities and stabilities of Pt supported on Sb-doped $SnO_2$ (ATO) were examined for ethanol oxidation reactions. Pt colloidal particles were deposited on ATO nanoparticles (Pt/ATO) and the prepared electrocatalysts were characterized by X-ray diffraction, transmission electron microscopy (TEM), and cyclic voltammetry. Electrochemical activity of the Pt/ATO for ethanol electro-oxidation was compared to those of Pt supported on carbon (Pt/C) and commercial PtRu/C. The activitiy of the Pt/ATO was much higher than those of the Pt/C and commercial PtRu/C. The Pt/ATO exhibited much higher electrochemical stabilities than the Pt/C in 0.5M ${H_2}{SO_4}$ and in 0.5M ${H_2}{SO_4}$/1M ${C_2}{H_5}OH$. According to TEM, the growth rate of Pt particles was lower in the Pt/ATO than it was in the Pt/C. The ATO nanoparticle appears to be a promising support material that promotes electrochemical reactions and stabilizes catalyst particles in direct ethanol fuel cell.

• Journal of the Korean Ceramic Society
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• v.33 no.7
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• pp.735-742
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• 1996

Antimony-doped Tin oxide (ATO) thin films were deposited on soda-lime glass substrates by DC magnetron sputtering technique. Effects of DC power film thickness and post heat-treatment on electrical conductivity of ATO film were investigated. Other properties of ATO film such as optical anti-chemical and wear properties were also reported in this work. The obtained ATO films showed electrical resistivities ranging from 5$\times$10-3 $\Omega$cm to 3$\times$10-3 $\Omega$cm with the average optical transparency above 80% in visible wavelength range and excel-lent anti-chemical properties where the electrical resistivity was not changed even after soaking the films in 1M HCl or 1M NaOH solution for 10 days. These properties were found to be related to the crystallinity of ATO film and the films having higher crystallinity showed better properties.

• Journal of the Korean Ceramic Society
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• v.39 no.4
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• pp.386-393
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• 2002

Fabricatio of the potassium-titanate fiber with K2O${\cdot}nTiO_2$ composition and coating of electrically conductive Sb-doped $SnO_2$ (ATO: Antimony Tin Oxide) layer on the fiber on the fiber were the fiber were the aims of this work. The fiber fabricated by slow-cooling technique showed the mean length of $15{\mu}m$ and mean diameter of $0.5{\mu}m$. Three different coating methods i.e, sol-gel, co-precipitation and urea technique, were attempted to coat the conductive ATO layer on the potassium-titanate fiber. The influences of coating method, concentrations of ATO(5∼70wt%) and Sb (0∼20wt%), temperature in the range of $450\;to\;800^{\circ}C$, number of washing (3∼4 times) on the resistivity of the ATO coated fiber were examined in details. The fiber coated ATO by coprecipitation exhibited lower resistivity of 103${\Omega}{\cdot}$cm at the 30 wt% of ATO, and showed nearly constant low value of $60{\Omega}{\cdot}cm\;to\;90{\Omega}{\cdot}$cm at the higher concentration of ATO.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.21 no.4
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• pp.388-394
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• 2008

For purpose of anti-static film remaining unchanged in the condition of $160^{\circ}C$, organic solvent, acid and base solution $0.01\sim0.03{\mu}m$ particles of Sb doped tin oxide(ATO) were grafted by 3-Glycidyloxypropyltrimethoxysilane(GPTS) for improving interfere bonding force between ATO and epoxy resin. The particles were dispersed in 2-methoxyethanol with YD-I28(Bisphenol A type epoxy resin, Kukdo chemical) and 1-imidazole as hardener. The anti-static solutions were coated on PI film as thickness of $0.1{\mu}m$. Surface resistivity of anti-static film containing conductive polymer became $10^{12}\Omega/\Box$ after 32 hours in $160^{\circ}C$. The surface resistivity of ATO grafted by GPTS / Epoxy coating layer remained as $10^{7.6}\Omega/\Box$ in $160^{\circ}C$ for 7 days. ATO grafted by GPTS / Epoxy coating layer coated on PI film was dipped in acetone for 7 days. The surface resistivity remained unchanged as $10^{7.6}\Omega/\Box$. The anti-static layer dipped in water solutions containing each KOH 10 wt % and $H_2SO_4$ 2 wt% was ultra-sonicated for 10 minutes per once until 30th. The surface resistance of anti-static layer containing ATO grafted by GPTS remained unchanged.

• Journal of Powder Materials
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• v.25 no.1
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• pp.54-59
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• 2018

Sb-doped $SnO_2$ (ATO) transparent conducting films are fabricated using horizontal ultrasonic spray pyrolysis deposition (HUSPD) to form uniform and compact film structures with homogeneously supplied precursor solution. To optimize the molar concentration and transparent conducting performance of the ATO films using HUSPD, we use precursor solutions of 0.15, 0.20, 0.25, and 0.30 M. As the molar concentration increases, the resultant ATO films exhibit more compact surface structures because of the larger crystallite sizes and higher ATO crystallinity because of the greater thickness from the accelerated growth of ATO. Thus, the ATO films prepared at 0.25 M have the best transparent conducting performance ($12.60{\pm}0.21{\Omega}/{\square}$ sheet resistance and 80.83% optical transmittance) and the highest figure-of-merit value ($9.44{\pm}0.17{\times}10^{-3}{\Omega}^{-1}$). The improvement in transparent conducting performance is attributed to the enhanced carrier concentration by the improved ATO crystallinity and Hall mobility with the compact surface structure and preferred (211) orientation, ascribed to the accelerated growth of ATO at the optimized molar concentration. Therefore, ATO films fabricated using HUSPD are transparent conducting film candidates for optoelectronic devices.

• Korean Journal of Materials Research
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• v.9 no.5
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• pp.533-537
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• 1999

ATO(Sb doped $SnO_2$) thin films whose thicknesses were 600, 1100 and $2100\AA$ were prepared by DC magnetron sputtering method. They showed the lowest resistivity at DC sputtering power 0.24kW and had lower resistivity with increasing thickness. The power dependence of resistivity among ATO thin films was also different with thickness. The increase of carrier concentration in ATO thin films was responsible for the decrease of resistivity with thickness increase. ATO thin films which were prepared at 30sccm oxygen flow rate showed a great change of sheet resistance under 1M HCl solution. The investigation of SAM(Scanning Auger Microprobe) revealed that oxygen atomic percentage on the surface of ATO thin films was changed. The decrease of sheet resistance also occurred when ATO thin films, prepared at 30sccm oxygen flow rate, were exposed to air for a long period of time. For this reason, it was considered that the desorption of oxygen on ATO surface was accelerated by HCl.