• Elastomers and Composites
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• v.50 no.3
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• pp.205-209
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• 2015

Magnesium oxide (MgO) reinforced polyamide-66 (PA66) composites were prepared through melt-compounding method in order to determine the possibility of using MgO particle as conductive filler in the polymer-based composite. The effects of MgO filler content on the thermal conductivity and mechanical properties for the PA66/MgO composites were investigated. The results showed that the addition of MgO filler to the PA66 matrix led to a large increase in thermal conductivity of the PA66/MgO composites. Tensile strengths of the PA66/MgO composites were slightly decreased as MgO filler loading increased. However, flexural strength and flexural modulus were improved with increasing filler loading. Notched Izod impact strengths were dramatically lowered by the addition of MgO filler.

• Elastomers and Composites
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• v.55 no.1
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• pp.6-12
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• 2020

Poly(ethylene-co-vinyl acetate) compounds and vulcanizates containing dicumyl peroxide (DCP) (HD) were prepared, and the curing agent and reaction products were analyzed using gas chromatography/mass spectrometry (GC/MS). Samples containing trially cyanurate (TAC) and DCP (HDT) were also prepared and analyzed. Some raw DCP were decomposed in the injector region of GC to produce acetophenone. DCP was detected in the HD compound but was not observed in the HD vulcanizate, and instead acetophenone and 2-phenyl-2-propanol were detected. Both DCP and TAC were observed in the HDT compound but not in the HDT vulcanizate, where acetophenone and 2-phenyl-2-propanol were detected. Thus, some of the DCP decomposed during the compounding process. The formation mechanism for acetophenone and 2-phenyl-2-propanol during the crosslinking reaction was identified, and differences in the crosslinking reactions of HD and HDT compounds were discussed.

• Journal of the Semiconductor & Display Technology
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• v.18 no.3
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• pp.47-51
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• 2019

The three different polymer compounds were manufactured with the three different fire retardant (silane coated magnesium dihydroxide) contents, 180, 200, 220 phr, for making cable sheath for ship industry. In the research, ethylene-vinylacetate, polyethylene as matrix polymers and ethylene-vinylacetate grafted maleic anhydride as coupling agent were selected for compounding with fire retardant, closslinking agent, plasticizer, and other additives. In the evaluation. ΔT, Mooney viscosity, and tensile strength increased with the content of fire retardant. But it was found that too much fire retardant damaged aging resistance and cold resistance of the polymer compound.

• Journal of Agricultural Extension & Community Development
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• v.27 no.1
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• pp.33-50
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• 2020

This study aims at shedding light on two questions: 1) how livelihood strategies hired by heterogeneous farm households differ and in what aspect, and 2) would the strategy change over time or remain identical across farm types? Using 2013-2017 Farm Economy Survey panel data, we divide the sample farms into 4 sub-groups based on income level and sources. Key findings are as follows. First, regardless of farm types, strong path dependency has been observed. That is, lots of farms are likely (enforced) to maintain the livelihood strategies, accounting for why many farms fail to response to market and/or policy signals. Second, along with compounding risks, farms are more vulnerable to specific sorts risks. Third, based on the findings, we made policy suggestions.

• Journal of Fashion Business
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• v.11 no.3
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• pp.133-151
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• 2007

The role of fabric now directly related with the expression of the beauty of clothing and it provides new and creative ideas. This study was aimed at reviewing basic data that can be used in systematic design development through fabric expression for today's fashion designers who must study unique, original fashion design development. For systematic development of design technique through fabric expression, fabric expression methods and characteristics, aesthetic characteristics and fabric design of 'art to wear' were reviewed and the results are as follows. First, the highly wrought fabric expression of art to wear was confirmed to be comprehending a message within itself. Second, aesthetic characteristics of fabric expression used in art to wear can be classified as decorativeness, extensity, 2-D pictorialness, handicraft, compounding and rearrangement, and 3-D characteristics. Third, the 6 aesthetic characteristics have unique design features and aesthetic categories. The understanding the fabric expression techniques through study on the classification of the fabric expression in 'art to wear' is expected to be extended to proposition of creative direction and inspiration of modern fashion.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2017.11a
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• pp.189-190
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• 2017

As buildings take on more advanced features, mechanical facilities of buildings are accounting for increasingly greater significance in building construction projects. However, mechanical facility designers are forced to be content with design service fees that do not properly compensate their excessive workload, with lowest-bid-first tendering practices compounding their economic woes. In relation to this, this Study aims to offer suggestions for better standards for compensation of design service for mechanical facilities of buildings, highlighting five key suggestions in consideration of relatively small size of work and unmatched long duration of work.

• Journal of the Korean Ceramic Society
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• v.56 no.3
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• pp.233-255
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• 2019

Thermal batteries are reserve batteries with molten salts as an electrolyte, which activates at high temperature. Due to their excellent reliability, long shelf life, and mechanical robustness, thermal batteries are used in military applications. A high-performance cathode for thermal batteries should be considered in terms of its high capacity, high voltage, and high thermal stability. Research progress on cathode materials from the recent decade is reviewed in this article. The major directions of research were surface modification, compounding of existing materials, fabrication of thin film cathode, and development of new materials. In order to develop a high-performance cathode, a proper combination of these research directions is required while considering mass production and cost.

• Nuclear Medicine and Molecular Imaging
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• v.41 no.6
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• pp.525-529
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• 2007

Regulation for the radiopharmaceuticals should be reasonably different from that of other drugs. Radiopharmaceuticals are always used by compounding based on the doctor's order, have short half life and very low administration dose. Its pharmacological effect is not from its chemical effect but from radiation. The background for exploratory IND (Investigational New Drug) explained by the FDA was to reduce the time and resources expended on candidate products that are unlikely to suceed, new tools are needed to distinguish earlier in the process those candidates that hold promise from those that do not. In this review, basic concept for exploratory IND and RDRC guideline is summarized and various suggestions for improving and expediting procedure for new radiopharmaceutical development would be described.

• Korean Institute of Interior Design Journal
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• no.29
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• pp.3-10
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• 2001

In recent years when the importance of public communication is more emphasized, it has to be noticed that we are now living in the public-initiated age of rhetoric resulted from rapid development of broadcast media. Therefore, the purpose of this treatise is to examine the structural characteristics in the fusion design in order to anaylize the rhetorical expressions as symbols of communication. One of those is intertextuality that expresses metaphorically by bleding and borrowing codes and another is hypertextual space where various texts twines around each other making brand-new and diverse organizations, as the combined allegory with a number of hidden expression. The fusion design may be understood as the Intention to attract gaze to visual messages and as the rhetorical expressions based on compounding aesthetic codes by producing new cultural meanings. If fusion, a phenomenon which represents the 21st century, not a passing fad of cultural mixture, is ready to take the initiative, the design has to be groped for that creates a synergy effect.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2008.05a
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• pp.236-241
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• 2008

As the population of olds increases, the number of old people with capability increases, and they actively participate to social works with interests in healthy life and leisures. Therefore the demand rises to expand social facilities to support their spare time, while there are limitation, such as land, financial state, to build such facilities. In case of Japan, a solution of such problem occurs by compounding Social facilities for Old people and local facilities in practical and finacial aspect of the selection of site and managing the facilities and social aspect of supporting oppotunities to use various facilities. Such community based complex facilities supports services depending on the health state of Old people locally residing and increases the communication between different generation. The purpose of this research is aimed to analyze programs and space organization of advanced facilities in Japan and provide basical data for planning complex facilities for old people in Korea.