• Journal of environmental and Sanitary engineering
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• v.22 no.1 s.63
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• pp.75-83
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• 2007

Clove extract by methanol increased expression of the tyrosinase gene on B16 mouse melanoma cells containing tyrosinase promoter. $10{\mu}g/mL$ and $100{\mu}g/mL$ of the extract showed expression rate of the tyrosinase gene about 138% and 245%, respectively, compared with control. At $500{\mu}g/mL$, expression rate of the extract was impossible to measurement by high cytotoxicity. The solvent fraction of methylene chloride also exhibited highly expression rate as methanol extract. However, the solvent fractions of butyl alcohol and water showed repressive effect on expression of tyrosinase gene at $500{\mu}g/mL$. In MTT assay, cell survival rate of the extract exhibited similar to expression rate of tyrosinase gene. That is, $10{\mu}g/mL$ and $100{\mu}g/mL$ of the extract showed the cell survival rate about 128% and 187%, respectively.

• Journal of Korean Academy of Nursing Administration
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• v.22 no.1
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• pp.33-45
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• 2016

Purpose: This study was conducted to generate a grounded substantive theory of the adaptation process of nurses who return to work after taking parental leave. Methods: Individual in-depth interviews with 13 participants were conducted between June and September 2014. Participants were interviewed 1~3 times; interviews were continued until the data became saturated. Data were analyzed using Strauss and Corbin's grounded theory method. Results: The core category of experience of the process of adaptation as a nurse who returned to work after parental leave was 'trying to regain one's previous position'. Participants used five interactional strategies: 'preparing in advance', 'initiating relationships with colleagues', 'keeping a positive attitude', 'understanding parenting helpers', 'Taking burden off one's mind'. Conclusion: The results of this study provide a theoretical basis for the adaptation process of nurses returning to work after taking parental leave. The importance of improving nurses' attitudes to their co-workers who take parental leave is highlighted along with the necessity of providing a family-friendly work environment. These results can be used to develop supportive policies and programs for nurses who return to their work after parental leave.

• Journal of Korean Academy of Nursing
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• v.45 no.5
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• pp.684-693
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• 2015

Purpose: This methodological study was conducted to develop and test a cultural competence scale for nursing students. Methods: Based on the five constructs of cultural competency identified in the conceptual analysis of Suh, 76 items for the tool were derived initially. These items were reduced to 58 items after content validity tests (two times) by 6 multicultural experts. Data collected from 526 nursing students were utilized to test the validity and reliability of the preliminary tool. Item analysis, factor analysis, Pearson correlation coefficients, and Cronbach's alpha were used for the analysis. Results: Twenty-seven items were selected for the final scale, and categorized into 5 factors explaining 62.1% of the total variance. Cronbach's alpha was .91 and the reliability of the subscales ranged from .76 to .91. Criterion validity between the developed tool and empathy (r=.26, p <.001) was significant. Conclusion: The results show that this scale can provide scientific and empirical data when evaluating the effectiveness of school curriculums or multicultural empowerment programs regarding cultural competence of nursing students.

• 한국생물공학회:학술대회논문집
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• 2000.11a
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• pp.729-732
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• 2000

Antifungal activities of domestic plants were examined to develop natural anti-microbial agents, able to protect onion from spoiling microorganisms during their storage. A fungus was isolated from spoiling onion and identified to Penicillium sp. ON-211, based on the morphological characteristics of conidiophore and conidia. Chloroform extracts of Juniperus chinesis Linnaeus, Juniperus. chi. var. horizontalis, water extract of Thujs orientalis Linnaeus' seed and the n-hexane extract of Juniperus. chi. var. horizontalis N. showed remarkable antifungal activties against this fungus.

• Journal of Korean Academy of Nursing Administration
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• v.21 no.4
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• pp.393-404
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• 2015

Purpose: This study was done to identify the effects of the Korean Enneagram program on college nursing students' ego-identity, interpersonal relationships and self-leadership. Methods: A nonequivalent control group pre-posttest design was used. Twenty-nine students were in the experimental group receiving the Korean Enneagram program, and 28 were in the control group with no treatment. Results: 'The experimental group will show higher scores for ego-identity (t=3.97, p<.001), interpersonal relationship (t=3.26, p=.002) and self-leadership (t=2.91, p=.007) compared to the control group 8 weeks after the program finished' was supported by significant differences in the scores between the two groups. Conclusion: The findings indicate that the Korean Enneagram Program has a significant effect on improving ego-identity, interpersonal skills and self-leadership in nursing college students and the program can be used as a tool to promote the ego-identity, interpersonal skills and self-leadership of nursing students.

• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.38 no.3 s.116
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• pp.66-71
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• 2006

The objective of this study was to find in what color Hanji(Korean hand-made paper) is dyed when it is dyed with a pigment extracted from clove tree using different kinds of mordant, and how the paper is discolored and variety of strength under the condition of accelerated aging test. The results of this experiment are as follows. The Hanji dyed with aluminum acetate mordant was colored yellowish brown at pH 4.82, discoloration after aging was as much as a slight difference of color was recognized, and the decrease of strength after aging test was small. Thus, the method using aluminum acetate mordant was usable in coloring Hanji. The second most useful Hanji dyeing moth of was using distilled water and ferrous sulfate mordant, which dyed Hanji light brown at pH 6.03. However, when pigment was extracted using distilled water and copper sulfate mordant was used, discoloration was satisfactory but strength decreased too much and pale brown was obtained. Thus, this method was not usable.

• Fashion & Textile Research Journal
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• v.10 no.2
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• pp.260-266
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• 2008

Recently there has been a growing interest in the use of natural dyes in textile applications. Natural dyes can exhibit better biodegradability and generally have a higher compatibility with the environment. In this study, the colorants of clove were extracted with boiling water. Chitosan crosslinked cotton fabrics have been dyed with aqueous extract of clove and their dyeabilities on the fabrics were studied. Additionally the fastness to washing and light, and the effects on antimicrobial properties were also investigated. Cotton fabrics were treated with a crosslinking agent epichlorohydrin in the presence of chitosan to provide the cotton fabrics the dyeing properties of natural dye(clove) by the chemical linking of chitosan to the cellulose structure. This process was applied by means of the conventional mercerizing process. The chitosan finishing and durable press finishing of the cotton fabrics occurred simultaneously in the mercerization bath. The dyeability(K/S), which was obtained by CCM observation, remarkablely became increased when the crosslinked chitosan concentration was higher. The hue value indicated reddish yellow with increasing the crosslinked chitosan concentration. And the color fastness to washing and light was the almost the same. The chitosan treated cotton fabrics showed very high activities with almost 100% reduction.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2003.10a
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• pp.133-136
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• 2003

UWB(Ultra-Wide Band) system is transmitted using Gaussian monocycle pulse of very short pulse duration less than 1 nsec. Therefore, transmission signal has ultra-wide band spectrum to GHz band of very low power and not interfere with the existing communication system. A collision of multipath waves in UWB system with tarrier frequency very different with general wireless communication system. In this paper, the BER(Bit Error Rate) performance of UWB system applying Binary Phase Shift Keying, Quadrature Phase Shift Keying, 16-Quadrature Amplitude Modulation method under multipath channel using computer simulation is compared and analyzed.

• Journal of the Korean Society of Food Culture
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• v.31 no.5
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• pp.481-488
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• 2016

The objective of this study was to investigate the antioxidant and anti-inflammatory activities of Eugenia caryophyllata Thunb. water and 70% ethanol extracts. The content of total polyphenol was significantly higher in water extract than in 70% ethanol extract. The DPPH radical scavenging activity of water extract was similar to that of Vit. C at a concentration of $1,000{\mu}g/mL$. The ABTS radical scavenging activities of water and 70% ethanol extract were similar to that of Vit. C at a concentration of $1,000{\mu}g/mL$. SOD-like activity of water extract was higher than that of 70% ethanol extract at a concentration of $1,000{\mu}g/mL$ but lower than that of Vit. C. The DPPH radical scavenging activity, ABTS radical scavenging activity, and SOD-like activity increased as concentrations of water and 70% ethanol extracts increased. Cell cytotoxicity was not observed at all concentrations except at $100{\mu}g/mL$ concentration of water extract. Inhibitory activity on NO production effect of water extract was significantly higher than that of 70% ethanol extract. These results show that E. caryophyllata Thunb. has potent biological activities, and their activities were different depending on extraction solvent.

• The Journal of Natural Sciences
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• v.8 no.2
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• pp.199-224
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• 1996

The value orientations and life styles which are characterized by the postmodern societies have been expanding in korean society. This paper concerns with the postmodernism for in fashion design : at first the complex relationships between the logic of post-industrial society and the culture dynamics of postmodernism will be explained. Then the characteristics of postmodernism in the comparision with the Bauhaus, also "modernism" in design areas will be critically identified, and significant examples which I select in order to criticize the basic elements or orientations of postmodern design will be analized in details.I will make a new perspective which is beyond Bauhaus and postmodernism ; namly 'open dialogism design.'. But in the boundary of its introduction.