• Bulletin of the Korean Chemical Society
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• v.32 no.6
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• pp.1975-1979
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• 2011

The modification of a gas diffusion layer (GDL), a vital component in polymer electrolyte fuel cells, is described here for use in the electrochemical detection of antibody-antigen biosensors. Compared to other substrates (gold foil and graphite), mouse anti-rHBsAg monoclonal antibody immobilized on gold-coated GDL (G-GDL) detected analytes of goat anti-mouse IgG antibody-ALP using a relatively low potential (-0.0021 V vs. Ag/AgCl 3 M NaCl), indicating that undesired by-reactions during electrochemical sensing should be avoided with G-GDL. The dependency of the signal against the concentration of analytes was observed, demonstrating the possibility of quantitative electrochemical biosensors based on G-GDL substrates. When a sandwich method was employed, target antigens of rHBsAg with a concentration as low as 500 ng/mL were clearly measured. The detection limit of rHBsAg was significantly improved to 10 ng/mL when higher concentrations of the 4-aminophenylphosphate monosodium salt (APP) acting on substrates were used for generating a redox-active product. Additionally, it was shown that a BSA blocking layer was essential in improving the detection limit in the G-GDL biosensor.

• Nuclear Engineering and Technology
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• v.48 no.1
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• pp.200-210
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• 2016

The neutron radiography reactor (NRAD) is a 250 kW Mark-II Training, Research, Isotopes, General Atomics (TRIGA) reactor at Idaho National Laboratory, Idaho Falls, ID, USA. The East Radiography Station (ERS) is one of two neutron beams at the NRAD used for neutron radiography, which sits beneath a large hot cell and is primarily used for neutron radiography of highly radioactive objects. Additional fuel elements were added to the NRAD core in 2013 to increase the excess reactivity of the reactor, and may have changed some characteristics of the neutron beamline. This report discusses characterization of the neutron beamline following the addition of fuel to the NRAD. This work includes determination of the facility category according to the American Society for Testing and Materials (ASTM) standards, and also uses an array of gold foils to determine the neutron beam flux and evaluate the neutron beam profile. The NRAD ERS neutron beam is a Category I neutron radiography facility, the highest possible quality level according to the ASTM. Gold foil activation experiments show that the average neutron flux with length-to-diameter ratio (L/D) = 125 is $5.96{\times}10^6n/cm^2/s$ with a $2{\sigma}$ standard error of $2.90{\times}10^5n/cm^2/s$. The neutron beam profile can be considered flat for qualitative neutron radiographic evaluation purposes. However, the neutron beam profile should be taken into account for quantitative evaluation.

• Journal of the Korea Fashion and Costume Design Association
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• v.5 no.3
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• pp.49-61
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• 2003

This study is a process of developing experimental Korean image fashion items that can appeal to the younger generation. The sample models are focused on jeans and T-shirts. This project had two goals. First, giving chance to the students of Konkuk-University of producing fashion items adopting Korean image in university venture company. Second, contributing to Korean image fashion market if the items have been proved to have competitive power through the market of Konkuk-University and it's cooperated company. The research is restricted within ornament techniques of Korean traditional dress and its ornament's element, they are patchwork wrapping-cloth(Chokakbo), embroidery, gold and silver foil on cloths, and transcription. Such Korean image elements are graphic patterned as 30 jeans and 50 T-shirts and eventually evaluated by 100 university students majoring in garments. The evaluation scale contains repletion of Korean image, possibility of market, and preference. Through this process, 6 jeans and 7 T-shirts were produced.

• The Research Journal of the Costume Culture
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• v.19 no.4
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• pp.712-722
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• 2011

The purpose of this study is to examine the types and characteristics of decorative techniques applied to the Korean traditional skirt of contemporary style. For the purpose, this researcher selected 167 pieces of Korean traditional skirts which were shown in relevant monthly magazines published between 2001 and 2010. Then, the researcher classified the types of decorative techniques found in those selected pieces and analyzed the characteristics of decoration technique for each area of the pieces and the characteristics of patterns used in relation to those techniques. The Korean traditional skirt, otherwise called 'Hanbok chima', was classified into two types, single and composite, in accordance with which technique of decoration was used to it. The single type was characterized by so many embroideries, while the composite type, a combination of two decorative techniques, seonchigi and jatmulim. In the Korean traditional skirt, decorative techniques were applied to the knotting and entire of the skirt. Patterns used to decorate the Korean traditional skirt were usually in form of embroidery, gold or silver foil or painting. Out of the patterns, those which were embroidered or painted were shaped flowers, while those which were plated with gold or silver are shaped bosangdangchomun and flowers. There were other decorative techniques than mentioned above, for example, applying two or more different colors to the hem of the skirt, attaching pads to the knotting of the skirt and padding a decorative cloth on the front center of the skirt.

• Proceedings of the Korean Vacuum Society Conference
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• 2014.02a
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• pp.386.1-386.1
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• 2014

The ionic polymer-metal composite (IPMC), a type of electro-active polymer material, has received enormous interest in various fields such as robotics, medical sensors, artificial muscles because it has many advantages of flexibility, light weight, high displacement, and low voltage activation, compare to traditional mechanical actuators. Mostly noble metal materials such as gold or platinum were used to form the electrode of an IPMC by using electroless plating process. Furthermore, carbon-based materials, which are carbon nanotube (CNT) and reduced graphene-CNT composite, were used to alter the electrode of IPMC. To form the electrode of IPMC, we employ the synthesized graphene on copper foil by chemical vapor deposition method and use the transfer process by using a support of PET/silicone film. The properties of graphene were evaluated by Raman spectroscopy, UV/Vis spectroscopy, and 4-point probe. The structure and surface of IPMC were analyzed via field emission scanning electron microscope. The fabricated IPMC performance such as displacement and operating frequency was measured in underwater.

• Journal of the Korean Society of Clothing and Textiles
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• v.25 no.5
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• pp.868-879
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• 2001

The purpose of this study is to scan the textiles having been used for Hanbok since the 1945 Liberation. This paper states the situation of textile industry related to Hanbok. On the basis of this, the popularized textiles of each term and their characteristics are arranged. From 1945 to 1950, in the middle of disorder of this Liberation term, the clothing situation was very bad, so the majority of people wore clothing of Moomyung or Kwangmok. In the 50s, Moomyung, Kwangmok, Okyangmok, and Poplin were popularized. People could use more different kinds of textile then such as Chokyundan, Hobakdan, Newttong, Mobondan, Popdan, and Nylon. In the 60s, Chemical fibers, beginning to come in from the 50s, were their favorites, with which they made Hanbok and Western style dresses as well. Their characteristics were to have an cubic and ornamental effect on the surface. In the 70s, Yangdan, Newttong and other typical fabrics for Hanbok were manufactured with chemical fibers. they intended to give the ornamental effect by putting gold foil, embroidery, printing, and pictures on the surface of the fabrics. In the 80s, there were no seasonable fabrics for Hanbok during this term, as all-year-round fabric like Nobangzu was in common use. In the 90s, seasonable fabrics reappeared. Owing to the increasing interest in our typical fabrics like Mosi, Mobondan, and Hangra began to be in use again.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2002.05a
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• pp.495-498
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• 2002

Recently, the advent of electro-active papers (EAPap) actuators has been reported. In this paper, the possibility of the actuators is demonstrated. EAPap is a paper that produces large displacement with small force under an electrical excitation. EAPap is made with a chemically treated paper by constructing thin electrodes on both sides of the paper. When electrical voltage is applied on the electrodes the EAPap produces bending displacement. To improve the bending performance of EAPap, different paper fibers-softwood, hardwood, bacteria cellulose, cellophane, carbon mixture paper, electrolyte containing paper and Korean traditional paper, in conjunction with additive chemicals were tested. Two attempts were made to construct the electrodes: the direct use of aluminum foil and the gold sputtering technique. It was found that a cellophane paper exhibits a remarkable bending performance. When 2MV/m of excitation voltage was applied on the paper actuator, more than 3mm of tip displacement was observed out of the 30 mm long paper beam. This is quite low excitation voltage compared to that of other EAPs. The actuation principle of electro-active paper (EAPap) and possible applications are addressed.

• Journal of Conservation Science
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• v.18 s.18
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• pp.5-18
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• 2006

Dujeong-dong site of Cheonan is known as the site of Baekje period in the first half of the fourth century. This study investigated the visible properties and the chemical composition of the 18 pieces of the glass found in the site, and considered scientific properties and periodic interrelationship of the glass on the basis of the analysis result. The observation of the visible properties and microstructure of ancient glass was performed with both an electron microscope and an optical microscope, and the chemical composition was conducted by way of both quantitative and qualitative analysis using Scanning Electron Microscope(SEM) with Energy Dispersive Spectrometer(EDS). In the analysis result, various chemical composition systems are identified in the glass beads of Dujeong-dong site, such as lead-barium, soda and potash glass, and also different shapes were found such as gold foil glass beads, tubular beads, and round beads. It is estimated that the classification of glass by means of its chemical composition was also closely related to the color of glass.

• Journal of the Korean Society of Costume
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• v.53 no.4
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• pp.1-16
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• 2003

The purpose of this study is to investigate the sensibility images of Korean Traditional Chumoni. The detailed methodology of this study is as follows. Selections of stimuli to analyse the sensibility images of Korean Traditional Chumoni were made up of 15 stimuli. The survey has been done for the 15 slide stimuli with semantic differential hi-polar scales which are consist of 23 couples of sensibility words. The subjects were 150 female students majoring in clothing and textile. 150 male students majoring in other department and 150 female students majoring in other department in the twenties between 2001. 3. 30 and 2001. 4. 4. The obtained data were analyzed by factor analysis, cluster analysis. ANOVA. The major finds were as follows. 1. To explain the hierarchy of the sensibility of Korean Traditional Chumoni, two image groups were classified, one is noble and characteristic image the other is splendid and intensive image. Finally it represented noble and splendid image. 2. As result of the factor analysis. 3 factors which are Attraction, Decorativeness, Gravity were found to be constructing factors for the sensibility images of Korean Traditional Chumoni. 3. By cluster analysis, 4 clusters were determined according to Korean Traditional Chumoni. Cluster 1 is splendid. multi-colored and realistic in patteren. Cluster 2 is consist of 'true chumonis' and one-colored. Cluster 3 is modal in pattern. Cluster 4 is simple without any decorations. As to the difference of image of Korean Traditional Chumoni, there were significant differences amang 3 factors by cluster Cluster 1 was found most attractive and grave. Cluster 2 was found most decorative. 4. As to the difference of image of Korean Traditional Chumoni, there were significant differences amang 3 factors by decoration. Gold foil was found most attractive and grave. Embroidery was found most decorative. 5. As to the difference of image of Korean traditional chumoni, there were differences in Decorativeness and Gravity by sex and there were differences in Attraction by major.

• Journal of the Korean Society of Costume
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• v.53 no.3
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• pp.51-61
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• 2003

1. This study is to veri(y the characteristics of gauze fabrics focused on the them found at Sukga Pagoda. The remains researched are those of the Unified Shilla Dynasty around 8∼10 century. The found textile remains seem to be used as rugs or to be used for filling in spaces, wrapping silver reliquaries, equipments preserving relics of the Buddha, a gold-plated outermost reliquary, and so on. Since other remains found inside the Sukga Pagoda are national treasures, the textile remains can be considered as the fabrics of the highest quality. 2. Seven gauze fabrics, four non-designed gauzes and three designed gauzes, are found. They are all four-end complex gauze, weaved with the complex gauze technique. Two designed gauzes out of three designed gauzes are weaved in pattern by the clamp-resist dyeing technique and one is weaved in pattern by giving some changes in weaving. 3. In addition to the characteristics peculiar to gauze fabrics, such as thinness, fineness, and sparseness, another characteristic is found. That is, the difference in thickness between wefts and warps is over two times on the average in all of the seven gauze fabrics. Some of the gauze fabrics look like laces because of the huge difference in their thickness. 4. This research verified that with their transparency, are such materials that their beauty can easily be realized without adding various colors or patterns on the fabric by painting, embroidery, stitching old foil, or compound weaving technique.