• Korean Journal of Optics and Photonics
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• v.7 no.1
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• pp.72-76
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• 1996

The magnetostrictive characteristics of three different forms of magnetostrictive transducers made of 2605SC and 2826MB metallic glasses were measured. In both cases, the two-end-point bonding configuration exhibited the best characteristics. With the two-end-point bonding we measured the effective magnetostrictive coefficient $C_{eff}$ of $1.2{\times}^{-5}Oe^{-2}$, the saturation magnetostriction ${\lambda}_s$ of $7.4{\times}10^{-4}$ and the minimum detectable magnetic field $H_{min}$ of $1.6{\times}10^{-7}Oe$/ √Hz for the 2605SC metallic glass ribbon. Also for the 2826MB metallic glass ribbon, Ceff and ${\lambda}_s$ were $7.6{\times}10^{-6}Oe^{-2}$ and $3.4{\times}10^{-4}$ respectively.

• Journal of the Korean Society of Food Science and Nutrition
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• v.43 no.9
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• pp.1334-1341
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• 2014

To examine the biological activity of polysaccharide extracted from cultured mycelia of Schizophyllum commune, we determined anti-complementary activity and nitric oxide production as a measure of immunological activity, anti-lipidperoxidation and hydroxy radical scavenging activity as a measure of antioxidative activity, tyrosinase inhibitory activity, anti-microbial activity, and transdermal flux of polysaccharide extracted from cultured mycelia of S. commune. Polysaccharide extracted from S. commune activated the complementary system and produced nitric oxide in RAW 264.7 macrophages. Antioxidant activities as malondialdehyde values were $49.5{\pm}0.7$, $39.7{\pm}1.7$, $39.2{\pm}1.2$, and $2.6{\pm}0.5nM/mL$ for control, extracellular polysaccharide extracted from S. commune (SC-EP), ultrafiltrated polysaccharide extracted from S. commune (SC-UP), and butylated hydroxytoluene, respectively. Hydroxy radical scavenging activity ($IC_{50}$) of SC-UP and mannitol were 3.32 and 1.66 mg/mL, respectively. Tyrosinase inhibitory activities of SC-UP, arbutin, and kojic acid were 19.9%, 31.8%, and 99.0%, respectively. Anti-microbial activities of SC-UP appeared to be low, and transdermal fluxes of SC-UP were 0.47%, 0.73%, and 1.20% after 3, 6, and 9 hr, respectively. These findings suggest that polysaccharide extracted from S. commune has potential immunological and antioxidant activities.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2014.04a
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• pp.540-542
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• 2014

This paper introduces main activities of ISO/TC 108/SC 3 and published standards. Two working groups (WG 1 and WG 6) have been orgnized to review and revise ISO standards, specifically related to measurement and calibration subjects of vibration and shocks. A new joint working group (JWG1) with IEC/SC 47E (Semiconductor acceleration calibration) has started to deal with calibration methods for analog and digital output MEMS accelerometers. Finally, Published ISO standards, technically super-visored by ISO/TC 108/SC 3, are listed in this paper to help readers understand their main contents.

• Women's Health Nursing
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• v.27 no.4
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• pp.318-325
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• 2021

Purpose: Although insulin is usually injected into the abdominal subcutaneous fat, in pregnancy women tend to avoid abdominal injections due to concern about fetal damage. Prior studies have been limited to only measuring skin-subcutaneous fat thickness (S-ScFT) at one site at specific pregnancy points. This study aimed to measure S-ScFT across several abdominal sites and over the gestational period in Korean pregnant women. This can identify which site would be relatively safe for subcutaneous injection during pregnancy. Methods: Healthy women over 24 weeks of pregnancy in Korea were invited to voluntarily participate in this descriptive study. For the 142 women, S-ScFT of 12 sites in the abdomen were measured by ultrasound, several times over the pregnancy. Each incidence was treated as a case and a total of 262 cases were analyzed. Results: The mean S-ScFT during pregnancy was 1.14±0.47 cm (1.25±0.54 cm at 24⁺⁰-27⁺⁶ weeks; 1.17±0.48 cm at 28⁺⁰-31⁺⁶ weeks; 1.09+0.40 cm at 32⁺⁰-35⁺⁶ weeks; and 1.06±0.47 cm at 36⁺⁰-40 weeks of pregnancy). Most S-ScFT were thicker than 10 mm. But S-ScFTs in the lateral abdomen and some sites were suboptimal (<6 mm), especially in the pre-pregnancy underweight body mass index group, who had a high rate of suboptimal thickness (27.1% overall and 33.9% in the lateral side). Conclusion: The whole abdomen seems to be appropriate for subcutaneous injection in most Korean women during pregnancy, with a 4 to 5-mm short needle. However, for the lateral abdomen, making the skin fold might be needed for fetal safety.

• Journal of the Korean Applied Science and Technology
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• v.38 no.5
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• pp.1302-1313
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• 2021

In this study, Gami-Sumiwon (GS; Cynanchi wilfordii R., Angelica gigantis R., Lycium chinense M., Betula platyphylla S., Cryptotympana atrata F. and Carthamus tinctorius L.) and/or Sinomenium acutum R. (SC) was extracted with 70% ethanol or water. And We investigated the antioxidant activity effect of GS±SC. The following experimental techniques were used to evaluate the antioxidant efficacy of GS±SC. HPLC chromatogram, heavy metal content, ABTS/DPPH radical scavenging analysis, SOD-like activity assay, FACS, and NO assay. As a result of the experiment, the sinomenine content was found to be higher in DW extracts, and decursin was found to be higher in 80% ethanol extracts. And, the amount of heavy metals in all extracts was below the standard value. ABTS, and DPPH radical scavenging activity was identified that GS±SC(EtOH) was found to have a higher scavenging activity than GS±SC(DW). But, SOD showed the opposite result. No cytotoxicity of GS was observed on Raw 264.7 cells at concentration of 1~100 ㎍/㎖. The ROS production was significantly decreased that GS±SC(DW) was found to have a higher scavenging activity than GS±SC(EtOH). However, NO production showed the opposite result. Looking at the results of SOD and ROS analysis, SC does not seem to have a function of prevention. SC is thought to have an effect on the removal of free radicals generated after oxidative stress. This result objectively confirmed the antioxidant effect of GS±SCs. We will continue to conduct in-depth research. Therefore, it is believed that the possibility of using GS±SCs as a functional material can be established. The more diverse the objectives, the higher the value of GS utilization is thought to be.

• Journal of Korea Multimedia Society
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• v.3 no.6
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• pp.661-673
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• 2000

In this paper, we propose a Web-based HW/SW Codesign Environment with Distributed Architecture (WebCEDA), then design and implement SpecCharts Specification Environment(ScSE) for specifying systems in WebCEDA. WebCEDA has 3-tier client/server architecture than can remedy disadvantages of existing codesign tools, such as platform dependency, difficulty of extension, absence of collaboraton environment. ScSE includes web interface, SpecCharts editor, HW/SW codesin application sever and SpecCharts translator. To verify the operation of ScSE, we specify several example system using SpecCharts editor, then translate it to VHDL using SpecCharts translator and simulate the translated VHDL codes on synopsys. As the results, we know that ScSE has correct operations, also obtain the following advantages, the reduction in system complexity and the natural abstract design.

• Applied Chemistry for Engineering
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• v.20 no.6
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• pp.696-699
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• 2009

In present work, the antimicrobial effect of silver-nanoparticles/celite (SN/C) and silver carbonate/celite (SC/C) composites on Escherichia coli (E. coli) by use of silver nanoparticles and silver carbonate has been studied. Characteristics of the SN/C and SC/C composites were identified by scanning electron microscopy (SEM), X-ray diffraction (XRD) and atomic absorption spectroscopy (AAS). SN/C and SC/C composites showed antimicrobial activity and the minimum inhibitory concentration of E. coli were 0.541, 0.344 ppm and the complete sterilizing concentration for the test organism were 1.427, 1.623 ppm. From the results we identified that SN/C and SC/C composites have antimicrobial activity to E. coli.

• Journal of the Earthquake Engineering Society of Korea
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• v.17 no.2
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• pp.79-88
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• 2013

Steel plate concrete (SC) composite structure is now being recognized as a promising technology applicable to nuclear power plants as it is faster and suitable for modular construction. It is required to identify its dynamic characteristics prior to perform the seismic design of the SC structure. Particularly, the damping ratio of the structure is one of the critical design factors to control the dynamic response of structure. This paper compares the criteria for the damping ratios of each type of structures which are prescribed in the regulatory guide for the nuclear power plant. In order to identify the damping ratio of SC shear wall, this study made SC wall specimens and conducted experiments by cyclic lateral load tests and vibration tests with impact hammer. During the lateral loading test, SC wall specimens exhibited large ductile capacities with increasing amplitude of loading due to the confinement effects by the steel plate and the damping ratios increased until failure. The experimental results show that the damping ratios increased from about 6% to about 20% by increasing the load from the safe shutdown earthquake level to the ultimate strength level.

• Journal of the Korean Society for Heat Treatment
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• v.17 no.2
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• pp.101-105
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• 2004

After extrusion, cold rolling and T-6 treatment, texture development of 7x1x Al-alloy with 0.1% Sc is studied. During extrusion the very strong <111>+weak <100> fiber texture is developed, which is Influenced on the formation of rolling texture. The texture after 80% cold rolling can be described by strong{112}<111>(Cu)+{123}<634>(S) component in the cross section of the extruded rod, the strong -fiber+weak{110}<001>(Goss) components in the longitudinal section, and the strong {110}<112>(Bs)+weak{001}<100>(Cube) components in the transverse section. The components of rolling texture are remained after T-6 treatment, but the maximum density of ODF is higher. The calculated mean r-values and the planar anisotropy are relatively high, which are dependent on the texture. After T-6 treatment, recrystallized equiaxed grains with average grain size of $1{\sim}2{\mu}m$ are obtained.

• Proceedings of the Korean Ceranic Society Conference
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• 2002.10a
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• pp.112.1-112
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• 2002