• Journal of the Korean Society of Costume
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• v.56 no.2 s.101
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• pp.147-154
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• 2006

In this study 1, the dyeability and sun protection characteristic of the fabrics dyed with pine needles extract was investigated. In the test of color difference, the surface color of all the dyed fabric of both cotton and silk came to light as greenish yellow. In the test of dyeing colorfastness, the colorfastness to sunlight of dyed cotton fabric was below 2nd grade and the one of dyed silk fabric was below 3rd grade. The colorfastness to laundry for the degree of discoloration showed a difference as to mordants, but the colorfastness to laundry for the degree of contamination was excellent as all the dyed fabrics were 4th-5th grade. The colorfastness to perspiration was excellent as the degree of discoloration was more than 3rd grade and the degree of contamination was more than 4th-5th grade. The colorfastness to rubbing showed the excellent result as all the dyed fabrics were 4th-5th grade. In the test of sun protection factor(SPF), the cotton and silk fabrics dyed with $FeSO_4{\cdot}7H_{2}O$ mordant showed very high sun protection characteristic as the SPF was each 36.1 and 42.5. In the test of sun protection rate for UV-A and UV-B, the cotton and silk fabrics dyed with $FeSO_4{\cdot}7H_{2}O$ mordant showed the very high sun protection rate of more than $90\%$.

• Nuclear Engineering and Technology
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• v.53 no.10
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• pp.3335-3343
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• 2021

The impact of gamma radiation on a commercial off the shelf microcontroller board has been investigated. Three different tests have been performed to ascertain the radiation tolerance of the device from a nuclear decommissioning deployment perspective. The first test analyses the effect of radiation on the output voltage of the on-board voltage regulator during irradiation. The second test evaluated the effect of gamma radiation on the voltage characteristics of analogue and digital inputs and outputs. The final test analyses the functionality of the microcontroller when using an external, shielded voltage regulator instead of the on-board voltage regulator. The results suggest that a series of latch-ups occurs in the microcontroller during irradiation, causing increased current drain which can damage the voltage regulator if it does not have short-circuit protection. The analogue to digital conversion functionality appears to be more sensitive to gamma radiation than digital and analogue output functionality. Using an external, shielded voltage regulator can prove beneficial when used for certain applications. The collected data suggests that detaching the voltage regulator can extend the lifespan of the platform up to approximately 350 Gy.

• Fashion & Textile Research Journal
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• v.21 no.2
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• pp.231-236
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• 2019

This study investigated the proper dyeing conditions, color fastness and functionality of wool fabrics dyed with Zizania latifolia Turcz. We also tried to improve light fastness through treatment with benzophenone ultraviolet absorber. The dyeing of wool fabrics using Zizania latifolia Turcz was good even without pretreatment or mordanting treatment. Optimal wool fabric dyeing conditions were colorant concentration of 200% (o.w.f.), dyeing temperature of $100^{\circ}C$, dyeing time of 80 minutes and a dye bath pH of 3. Color fastness of dyed wool fabrics to washing, rubbing, perspiration and light was 4-5, 5, 4-4-5 (acidic), 4-5 (alkaline) and 2 respectively. The results after treatment with ultraviolet absorber for improving the fastness of daylight were improved to 3-4 grade. The UV protection rate were increased after dyeing and the deodorization of ammonia gas improved to 98%. Bacterial reduction rate (Staphylococcus aureus) of wool fabrics was excellent at 99.9%. All dye fastness (except for light fastness) was excellent; in addition, the functionality of wool fabrics dyed with Zizania latifolia Turcz also improved. The results are expected to be applied to various fields because they indicate excellent results after treatment with ultraviolet absorber for improving the fastness of daylight.

• Journal of the Korean Society of Food Culture
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• v.23 no.3
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• pp.388-396
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• 2008

This study examined the effects of Web ad components on customer attitude and purchasing decisions in 300 individuals who visited family restaurant Websites. The results are summarized as follows: First, Web ad components such as content, design, and interactivity had effects on the cognitive attitudes of the customers. And design, accessibility, and Web functionality had significant effects on the customers' emotional attitudes. In addition, content, navigation, and Web functionality had significant effects on the customers' behavioral attitudes. Lastly, the cognitive, emotional, and behavioral attitudes of the customers had significant effects on their purchases. From these results, design elements such as content, color, and menus, along with user interactivity for information are considered helpful components of a food service Web ad for customer cognition of the restaurant's information. In addition, aspects of Web functionality such as the food service's Web ad set-up, or the protection of personal information, the color design and menu, as well as accessibility for easy use, are all helpful in terms of gaining a customer attitude that is friendly and preferential towards a restaurant's menu items.

• Textile Coloration and Finishing
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• v.23 no.3
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• pp.187-194
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• 2011

This study used Jeju scoria to dye cotton fabric and measured its dyeability, colorfastness, antibacterial activity, deodorization efficiency, ultraviolet protection, and far-infrared emission. The cotton fabric was colored to yellowish red and optimal dyeing can be achieved at a temperature of $80^{\circ}C$ for a dyeing time of 120 minutes with a colorant concentration of 25%(o.w.b). The colorfastness to light, rubbing, perspiration, and washing was 8, 5, 5, and 4~5 ratings respectively, where the wash colorfastness remained after 15 wash cycles. The cotton fabric dyed with Jeju scoria demonstrated excellent antimicrobial activity to Staphylococcus aureus and high deodorization efficiency. Ultraviolet protection factor was as high as 50+. The Jeju scoria can be used as a new colorant for the natural dyeing of silk.

• Textile Coloration and Finishing
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• v.26 no.1
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• pp.53-62
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• 2014

This study examined the dyeability, color fastness and functionality of cotton fabrics dyed with residual parts of cultivated Pteridium aquilinum. UV-Vis absorption spectrum, TLC and FT-IR spectra analysis showed that colorants of Pteridium aquilinum are a mixture of pyrogallol tannin and catechol tannin. Optimum dyeing conditions was confirmed colorant concentration of 500% at $100^{\circ}C$ for 60 minutes. Color fastness followed to washing, rubbing, perspiration and light as 4-5, 5, 4-5(acidic), 3-4(alkaline) and 2, respectively. Deodorization rates of ammonia($NH_3$) and acetic acid ($CH_3COOH$) were analyzed 88.8% and 78.0%. UV protection rate was 94.2% of UV-A and 96.8% of UV-B. UV protection factor(UPF) was 27. Therefore residual parts of cultivated Pteridium aquilinum could be used for a new functional colorant.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2004.05a
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• pp.463-468
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• 2004

The digital motor protection, measuring and control equipment, as called "The digital motor control equipment", for applying to single/three phase motors designed an integrated one unit and manufactured a compact size which will be installed on the motor control center. It performs serveral protection functions and motor starting function, and measures and indicates a serveral measurement. This paper proposes the design concept and functionality of new digital motor control equipment to improve control performance and integrate several equipments for the control and protection of the motor.

• Fashion & Textile Research Journal
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• v.10 no.2
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• pp.242-248
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• 2008

This study was aimed to find whether the Chelidonium majus which grows naturally in Korean soil and has a various medical ingredient is valuable as a natural dyeing material and to examine the functionality of Chelidonium majus extract. As the test result of dyeing colorfastness, colorfastness to sunlight was 1st grade for all the dyed fabrics. The colorfastness to laundry for discoloration showed from 1st to 4th grade and that for discoloration showed from 4th to 5th grade through all the dyed fabrics. Colorfastness to perspiration, rubbing, and drycleaning showed from 4th to 5th grade through all the dyed fabrics. In the result of antibiosis test, the dyed cotton fabric showed the bacteria reduction rate of 99.0% for Staphylococcus aureus and Escherichia coli evenly when washed one, three, and five times, The dyed silk fabric, when washed one, three, and five times, showed the bacteria reduction rate of 99.0% for Staphylococcus aureus, but didn't showed the significant bacteria reduction. As the test result of sun protection test, in the case of the cotton fabric which was dyed but don't use mordant, after one-time washing, S.P.F.(Sun Protection Factor) showed 20.4, the interception rate of UV-A showed 94.3%, and that of UV-B showed 95.2%. After five-time washing, S.P.F. showed 14.3, the interception rate of UV-A showed 90.0%, and that of UV-B showed 93.2%. In the case of the silk fabric which was dyed but don't use mordant, after one time washing, S.P.F. showed 30.5, the interception rate of UV-A showed 95.9%, and that of UV-B showed 96.9%, after five-time washing, S.P.F. showed 31.0, the interception rate of UV-A showed 95.6%, and that of UV-B showed 96.7%.

• Fashion & Textile Research Journal
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• v.18 no.6
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• pp.869-877
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• 2016

This study looks into the dyeing properties and functionality of cotton fabrics dyed in both the Spirodela polyrhiza extract and the extract resulting from the mixture of Salvia plebeia R. Br. and Spirodela polyrhiza. Since the UV-Vis Spectrum of the methanol extract of Spirodela polyrhiza shows absorption peaks at 256, 268nm, and 345nm, it can be inferred that the compound that Spirodela polyrhiza contains is a flavonoid. In addition, it can also be presumed that, by analyzing the infrared absorption spectrum of Spirodela polyrhiza, the plant contains flavonoid compounds, just like Salvia plebeia R. Br.. The UV protection factors of the cotton fabrics dyed in both the Spirodela polyrhiza extract and the extract from the mixture of Salvia plebeia R. Br. and Spirodela polyrhiza were 50+, presenting outstanding UV protection factors. The deodorization rate of the cotton dyed in the Spirodela polyrhiza extract was between 30 and 120 minutes, and the rate rose from 92% to 97% as time passed. The deodorization rate of the cotton dyed in the extract from the mixture of Salvia plebeia R. Br. and Spirodela polyrhiza increased from 88% to more than 91%. The result also revealed that overall the fastness of color, including color fastness to washing related to change in color, as well as the color fastness to light of the fabric dyed in the extract from the mixture of the two plants improved, compared to the cloth dyed only in Spirodela polyrhiza extract. Furthermore, the antibacterial activity was also strengthened.

• Journal of Korea Multimedia Society
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• v.10 no.3
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• pp.325-334
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• 2007

In order to increase the promotion of multimedia processing techniques in MPEG standard, MPEG Multimedia Middleware (M3W) which supports middleware interface for multimedia processing is set up. In this paper, multimedia protection and management service interfaces based on MPEG Multimedia Middleware (M3W) are introduced. The service interfaces are based on component models of M3W and support normative IPMP messages. The proposed interfaces are composed of Tool interfaces and Trust management interfaces: Tool interfaces provide the functionality supporting terminal and tool based on the governed decoder model and Trust management interfaces provide the supporting functionality such as license managing and authentication required in DRM devices. As an application of the proposed interfaces, a JAVA based player simulator is shown. The proposed interfaces can be easily implemented under various device and application environments as an ISO/IEC 23004-2 standard middleware platform.