• Proceedings of the Korea Multimedia Society Conference
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• 2000.11a
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• pp.279-282
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• 2000

무선인터넷을 지원하는 WAP 게이트웨이는 프로토콜 변환과 함께 WML 파일을 바이너리 포맷으로 변환하여 무선 환경에 적합하게 한다. 인코딩에서의 공백제거와 태그변환에 따른 효과는 WML 파일의 크기와 특성에 따라 달라진다. 본 논문에서는 게이트웨이에서의 인코딩에 따른 파일크기 감소 효과를 분석하고 압축의 효용성에 대해 기술한다.

• Venture DIGEST
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• s.77
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• pp.26-26
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• 2005

1+1은 2가 될 수도 있지만 시너지 효과를 낸다면 3이 될 수도 있다. 실력 있는 벤처기업을 조련하는 벤처인큐베이터는 이 시너지 효과를 극대화시키는 역할을 하고 있다. 서울벤처인큐베이터에 입주해 있는‘에 이포웰(대표 전용수)’또한 최고의 기업이 되기 위한 발걸음을 떼고 있다.

• Proceedings of the KSCN Conference
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• 1998.05a
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• pp.78-78
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• 1998

• Journal of Dairy Science and Biotechnology
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• v.26 no.1
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• pp.5-10
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• 2008

This study was conducted to isolate protein components from culture supernatant of Lactobacillus casei. and measure anti-cancer activity. The protein components were isolated A and B on Ultrafiltration membrane(3, 10, 30, 100 KDa). And the protein components A and B were isolated fractions(number $3{\sim}9$) on FPLC. Experimental studies were progressed through the cell cytotoxicity and anti-cancer activities. Cell cytotoxicity test using human kidney normal cell(293) showed cytotoxicity of below 20% by the protein components A and B($100{\mu}g/mL$). The anti-cancer activity was increased up to 70% by the protein components A and B($100{\mu}g/mL$) in AGS(stomach cancer), A549(lung cancer), MCF-7 (breast cancer), SK-OV-3(ovary cancer) and LoVo(colon cancer). Cell cytotoxicity test was showed cytotoxicity of about 50% by the fractions(number 3, 8, 9) isolated FPLC. The others have not the cytotoxicity about the human normal cell. The anti-cancer activity was increased up to 70% by the fraction number 7 in cancer cell line. Therefore the components isolated from culture supernatant of Lactobacillus casei were showed anti-cancer activity.

• Journal of the Korean Society of Food Science and Nutrition
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• v.44 no.4
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• pp.516-523
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• 2015

This study investigated the antimutagenic and anticancer effects of Platycodon grandiflorum extract (PGE) and its fractions against carcinogenic N-nitrosodimethylamine (NDMA) and genotoxicity. The Ames Salmonella mutagenicity test employing histidine mutants of Salmonella Typhimurium TA98 and TA100 was used to examine the mutagenicity of PGE and its fractions. Bacterial reversion assay with S. Typhimurium TA98 and TA100 did not show a significantly increased number of revertant colonies. The same test was used to examine the ability of PGE and its fractions to prevent acquisition of N-methyl-N'-nitro-N-nitrosoguanidine- and 4-introquino-line-1-oxide-induced mutations. PGE and its fractions inhibited mutagenesis in a dose-dependent manner. Among the fractions, ethyl acetate fraction from PGE (PGEA) exhibited a higher antimutagenic effect than other fractions. PGE and its fractions suppressed the growth of cancer cell lines, including human cervical adenocarcinoma, human hepatocellular carcinoma, human breast adenocarcinoma, human lung carcinoma, and transformed primary human embryonic kidney cells. In addition, we evaluated the antitumor activity of PGEA and its fractions in sacorma-180 solid tumor-bearing mice. In vivo anticancer activity results showed that PGE and its fractions could more effectively suppress tumor growth than the control. PGEA showed higher in vitro and in vivo anticancer effects than PGE and other fractions, and PGEA inhibited NDMA formation. Thus, we showed that PGEA has antimutagenic and anticancer activities, making it a candidate anticancer material under these experimental conditions.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.42 no.4
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• pp.413-420
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• 2016

Hydroxy acid has been used to enhance anti-aging and skin moisturization by peeling effect on the skin stratum corneum, and thus it has been widely used in topical products and cosmetic products. Among them, the effect that appears most effectively in a short period of time has been reported to be effected by the pH of the cosmetic formulations. However, there are many difficulties in use due to irritation caused by pH and concerns about side effects. The purpose of this study was to evaluate the effect of applying cosmetics with (1) varying concentrations, (2) types and (3) pH of hydroxy acid on human skin. 22 healthy adults were stained with DHA (dihydroxyacetone) and DC (dansyl chloride) on the forearm, and the skin exfoliation effect was measured after application of the test products. (1) The application of GA (glycolic acid) increased the desquamation by concentration dependent. (2) the test product prepared with neutral pH showed no exfoliation effect. In contrast, SA (salicylic acid) showed a statistically significant exfoliation effect at both acidic pH and neutral pH. (3) The neutral pH SA showed excellent exfoliation effect on bot DHA and DC stained stratum corneum. These results suggest that it is possible to manufacture safe cosmetics without damaging the skin barrier, providing an opportunity to use cosmetics that are expected to exfoliate to people, whose skin is sensitive to pH.

• 대한공업교육학회지
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• v.38 no.1
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• pp.145-161
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• 2013

The purpose of this study is to provide the basic data necessary to improve the planning and operations for an effective on-the-job training (OJT) by analyzing educational effects and deciding on a career for employment (DCE) effects of OJT based on the perceptions of employees from the specialized high school (SHS). The survey was performed with 301 employees who are working in the industrial institutions including the OJT, among the nation's specialized technical high school graduates. 240 questionnaires were analyzed. The major results of this study are as following. First, the effects of OJT are as following. The OJT have educational effects such as the improvement of job ability and adaptability to workplace, refinement of working life, and career guidance. However, the OJT almost don't have educational effects for contents in relation to the majors in SHS. The OJT had basic DCE effects on graduates, and consistently have had them since they graduated from SHS. Second, the difference of OJT effects by employees' background variables is as following. By the gender, the OJT have more educational effects and DCE effects on male than female. By the types of career decision before taking part in the OJT, the OJT has more educational effects and DCE effects on employees with a high degree of career decision. By the working life satisfaction, the higher working life satisfaction, the higher OJT effects. Therefore, the OJT should be operated to make students feel satisfied with the OJT in order to correspond with the purpose of specialized high school - cultivating talent in specific areas.

• Journal of Applied Biological Chemistry
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• v.61 no.2
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• pp.173-180
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• 2018

In this study, the functional cosmetic activity of water and ethanol extracts from Saururus chinensis by elicitor treatment are examined. Anti-oxidative activity 1,1-diphenyl-2-picrylhydrazyl and antioxidant protection factor of elicitor treated S. chinensis extract increased in concentration dependent manner as concentration increased from 1.5 mg elicitor/leaf 1 g (group A) to 3.0 mg elicitor/leaf 1 g (group B). Also, 70% ethanol extract showed higher anti-oxidative activity than water extract. Elicitor treated S. chinensis extract showed similar inhibitory effect on elastase activity and whitening effect indicating low effect of elicitor on elastase inhibition and whitening effect. However, it showed high anti-inflammatory and anti-microbial activity compared to control group. Both group A and B showed high anti-inflammatory and anti-microbial activity then control group indicating that elicitor treatment is suitable for biomass method used for industrializing useful compounds. Therefore, elicitor treatment during S. chinensis cultivation will increase bioactivity in the plant source which will yield high quality for industrialization.

• The Journal of the Korea Contents Association
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• v.17 no.2
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• pp.595-611
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• 2017

This study aims to verify the effect that familism recognized by college students has on anxiety over aging and elderly group's attitude as well as mediation effect of a sense of filial duty. For study analysis, 200 college students studying at colleges in Sungnam, Anyang and Incheon in Gyeonggido as well as in Seoul were surveyed using structured questionnaires from May 2, 2016 to June 28, 2016. All of 166 responses except for 34 incomplete ones were used for analysis. Firstly, analysis result confirmed correlation among familism, anxiety over aging, elderly group's attitude and variables in sense of filial duty. Multicollinearity between variables were confirmed using VIF values. Secondly, the effect that familism recognized by college students has on anxiety over aging and elderly group's attitude was confirmed. Thirdly, partial mediation effect of a sense of filial duty was confirmed in the effect that familism recognized by college students has on anxiety over aging. In addition, Sobel Test suggested by Sobel was conducted to verify significance of the mediation effect. This study suggests intervention in and practice of social welfare to promote familism and a sense of filial duty between college students and elderly generation in this era of nuclear family and aging society as well as reduction of anxiety over aging on the part of college students, based on the verified mediation effect of a sense of filial duty in the effect that familism recognized by college students in aging society has on anxiety over aging.

• Korean Journal of Plant Resources
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• v.23 no.5
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• pp.399-405
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• 2010

Rosa rugosa has been used as a folk medicine with various pharmacological properties for a long time in Asia. Recently, it has been reported that the extract of fractions from different parts of Rosa rugosa have various pharmacological effects on diverse diseases including diabetes, inflammatory diseases and tumor. We investigated effects of fructus extracts of Rosa rugosa(RRF) and semen extracts of this herb(RRS) on macrophage to evaluate the possibilities as a biological response modifier. We showed increased effects on tumoricidal activity, phagocytic activity, TNF-$\alpha$ and NO production in RRF-treated groups without direct tumor cell cytotoxicity. RRS-treated groups increased direct tumor cell cytotoxicity at high dose without tumoricial activity except increasing of TNF-$\alpha$ release. These results provide further possibilities for the beneficial immunomodulating effects of RRF on immune system with relatively larger safety margin rather than RRS.