• Restorative Dentistry and Endodontics
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• 제14권1호
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• pp.7-24
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• 1989

The purpose of the study was to evaluate the cytotoxic effects of polycarboxylate cements and zinc phosphate cements in vitro. Human fibroblasts were cultured in ${\alpha}$-MEM, and each cement was manually mixed and filled in glass ring cylinder (8${\times}$8mm in diameter, in height.) Cement filled cylinders were placed in the center of the dish (35mm in diameter) containing 3ml of ${\alpha}$-MEM. Millipore filters to simulate dentinal barrier were also placed between the cylinder and the dish, then stored in 5% $CO_2$ containing chamber for 1 and 2 weeks at the temperature of $36.6^{\circ}C$. The results of the experiments were analyzed by counting the cells in the period of one week and two weeks respectively, and were assessed by calculating the cell multiplication rate and the relative growth rate. The experimental groups and the control group were compared. The results of the study were summarized as follows. 1. Durelone brand of the polycarboxylate cements showed marked cytotoxicity after one week, but after two weeks the toxicity decreased remarkably. Poly-F brand exhibited moderate cytotoxicity after one week, but after two weeks the toxicity slightly decreased. HY-BOND brand was weakly cytotoxic after one week, but after two weeks the toxicity became significant. 2. The cytotoxicity of the zinc phosphate cements was negligible after one week, but after two weeks Lee Smith brand revealed considerable cytotoxicity. 3. In general, the zinc phosphate cements were less cytotoxic than the polycarboxylate cements.

• 대한화장품학회지
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• 제46권2호
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• pp.167-177
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• 2020

본 연구에서는 한국이 세계 4위의 화장품 수출국으로 성장하는데 중요한 역할을 담당해 온 화장품 OEM·ODM 기업의 성장요인과 산업적 역할에 대하여 분석하였다. 1990년 한국콜마에 의해 OEM 산업이 처음 도입된 이래, 한국의 OEM·ODM 산업은 2016년 시장규모 12조 6,195억 원, 국내생산 제품 매출의 69.9%를 차지할 정도로 성장하며, 브랜드 기업들의 글로벌 시장 진출을 지원하는 것은 물론 직접 글로벌 기업들에 제품을 공급하면서 경제성장과 국격 상승에 일익을 담당하였다. 한국의 화장품 OEM·ODM 산업이 성장할 수 있었던 요인으로는 지속적인 기술개발, 산업환경의 변화에 대한 적극적 대응 그리고 기술력과 창의적 아이디어를 기반으로 ODM을 하나의 시스템으로 정착시키는 등 한국만의 차별화된 비즈니스 모델을 개발한데서 찾을 수 있다. 한국 화장품 산업의 지속적인 성장과 발전을 위해 OEM·ODM을 한국 고유의 산업으로 정착시키고 브랜드 기업과 상호 보완적 관계에서 공존을 도모할 필요가 있다.

• 한국지역지리학회지
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• 제21권2호
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• pp.273-285
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• 2015

이 연구는 2013년 4월부터 10월까지 전남 순천시에서 개최된 2013순천만국제정원박람회가 순천시 도시브랜드와 도시이미지 변화에 미친 영향을 분석한 것이다. 전국민을 대상으로 전화설문조사를 실시하여 순천시의 도시브랜드와 이미지 변화를 살펴본 결과, 전체 응답자의 65.3%가 순천시 도시브랜드에 긍정적인 평가를 하였고, 5개 브랜드 지표 중에서 발전가능성을 가장 높게 평가하였다. 순천시의 정주성에 대한 평가도 양호하였으며, 많은 국민들은 순천시를 생태정원도시로 인식하였다. 한편 순천을 대표하고, 순천을 연상시키는 관광명소는 정원박람회가 아닌 순천만생태공원으로 분석되었다. 따라서 순천정원박람회 개최는 순천의 새로운 도시이미지를 축적하는 계기를 제공한 것으로 밝혀졌다.

• 셀메드
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• 제13권2호
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• pp.2.1-2.9
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• 2023

CPS219, a new concept compound composed of coffee (CO), Pueraria Tomsonii flower (PF), and Sambou bamboo salt^TM (BS), was developed as a coffee beverage to alleviate menopausal symptoms. The purpose of this study is to evaluate the anti-oxidant and menopausal alleviating effects of CPS219 combined as the optimal ratio of each component selected through sensory evaluation and blind consumer test. For CPS219, the optimal ratio of CO, PF, and BS was determined to be 1:0.1:0.017 through various sensory evaluations and blind consumer tests. CPS219 significantly enhanced the superoxide dismutase-like activity compared to the CO or CO plus PF (CP). The proliferation of MCF-7 cells was considerably increased after 24 hours by treatment with CO, CP, or CPS219, but only CPS219 significantly boosted the proliferation of MCF-7 cells after 48 hours. Moreover, CPS219 had an estrogen-like effect by dramatically increasing the expression of estrogen receptor-β mRNA in MCF-7 cells but not CO and CP. Treatment of MCF-7 cells with CO, CP, or CPS219 did not cause any cytotoxicity. In conclusion, these findings imply that anti-oxidant and estrogen-like properties of CPS219 can be used to prevent and cure postmenopausal symptoms.

• Asia pacific journal of information systems
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• 제32권1호
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• pp.1-31
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• 2022

Personalization and customization of product and service designs involving firms and customers using online design interfaces across the Internet is increasingly being facilitated by brands. Research on the role of information technology and value co-creation across various research disciplines in management has provided learnings on ways to creatively improve products and services by integrating customers and firms in web portals. This paper provides a comprehensive analysis of the specific attributes of value co-creation between customers and firms relevant to business logic, learnings, projects, personalized products and services, social network innovations, brand management and markets across the Internet for the purpose of enhancing information management of value co-creation for industries and research. The paper draws on published research and industry surveys on how value co-creation is growing in the digital economy. An industry survey of managers who use web portals for their business responded to a questionnaire on how various social, economic and intellectual motivation factors of firm-customer interactions result in value co-creation for customers and firms. These motivation factors can lead to improved learning systems for business process improvements and service management for industries, customers and firms and may also be classified.

• 한국콘텐츠학회논문지
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• 제22권1호
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• pp.197-213
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• 2022

본 연구에서는 서울시 도시 브랜드 I SEOUL U에 대한 인식과 평가를 분석하기 위하여 온라인 빅데이터를 대상으로 한 텍스트마이닝 분석을 수행하였다. 이를 위하여 데이터 수집 및 분석을 위한 처리 프로그램인 텍스톰(Textom)을 사용하였고 'I SEOUL U' 키워드를 분석키워드로 선정하였다. 키워드 분석 결과 I SEOUL U와 관련된 키워드는 첫째, 비즈니스와 마케팅 관련 용어로서 팝업 스토어, 갤러리, 공동 브랜드, (축제 등) 개최, 상품, 민간기업, 온라인 등이다. 둘째, 이벤트 관련 용어로서 한강, 식목일, 나무 심기, 홍대, 크리스마스, 마포구, 중구, 세종대, 축제거리 등이다. 셋째는 홍보 관련 용어로서 로봇공학박사 데니스 홍, Government, 조형물, Korea 등이었다. N gram 분석 결과에서는 서울시 브랜드로서 공익적 성격의 도시 브랜드인 I SEOUL U의 경우에도 민간 기업의 상업 활동에 많은 기여를 하는 것으로 밝혀졌다. 연결 중심성 분석에서는 비즈니스 및 마케팅, 이벤트, 홍보 등의 범주가 도출되었다. 매트릭스 분석에서는 제품 판매와 관련하여 주로 팝업 스토어의 아이템들이 많고 공동 브랜드 형태의 제품들이 개발되는 것으로 나타났다. 토픽 모델링에서는 총 10개의 토픽이 추출되었고 상업적 활용과 이벤트 축제에 관한 정보 니즈가 많은 것으로 나타났다.

• 한국환경성돌연변이발암원학회:학술대회논문집
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• 한국환경성돌연변이발암원학회 2003년도 추계학술대회
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• pp.109-110
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• 2003

• 한국독성학회:학술대회논문집
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• 한국독성학회 2003년도 추계학술대회
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• pp.109-110
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• 2003

To validate a novel mouse model, gpt delta, for in vivo mutagenesis, the Mammalian Mutagenesis Society (MMS), a subgroup of the Environmental Mutagen Society of Japan (JEMS) (JEMS/MMS), performed a collaborative study as the third trial for transgenic animal assay. In this mouse model, point mutations and deletions re separately identified by gpt (6-thioguanine-resistant) and Spi- (sensitive to P2 interference) selections, respectively.(omitted)

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2008년도 춘계 학술발표회 초청강연 및 논문집
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• pp.905-913
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• 2008

The water resource depending on mostly surface water has many problems, such as contaminated and unpredicted contamination event. For this reason, it has been employed highly technical treatment method for them, such as ground water dam and river bank filtration. it has been developed the radial collector wells in kind of bank filtration to increase efficiency for in-taking the water resource insead of the vertical well needed many wells to take more resource. But it has many problems with the incumbent method to bore the horizontal hole for radial collector wells, such as filling with the filter material outside of a strainer by watering, jamming as retrieving the casing tube with the filter material, eccentric boring etc. To reduce the problems of incumbent equipment, it has been developed the horizontal boring equipment and performed the field trial tests several times, which have bits and water jetting system with rotating the cone-shaped front to be excavated easily. In this paper, it was compared the brand-new with the incumbent non-rotating pressing insertion method. Also it was shown the problems of the incumbent method was reduced effectively.

• 가정과삶의질연구
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• 제26권2호
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• pp.143-154
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• 2008

This study intended to provide information which gives a way for students and their parents to be satisfied with student costume purchase by showing differences between their satisfactions and repurchasing intention according to school uniform purchase type. Total 280 questionnaires were distributed to the first year students at a private middle school in Seoul and 133 of copurchase cases and 120 individual purchase cases were collected and analyzed. The comparing results between parent satisfaction and repurchasing intention were summarized as follows. First, parent satisfaction of individual purchase and of co-purchase had been evaluated. As a result of the analysis of satisfaction by the five factors, individual parent buyers had higher satisfaction in brand, quality, design, and service except price. The largest different factor between both customers was quality satisfaction. Secondly, the individual buyers showed higher repurchasing intention than co-purchasing buyers. This result meant that individual purchasing group showed higher satisfaction. Lastly, when the relationship between satisfaction and repurchasing intention of each buyer group was examined, the level of satisfaction was positively associated with the repurchase intention of co-purchase.