Streptococcus mutans에 대한 티트리의 항균 효과

최유리,강민경,Choi, Yu-Ri,Kang, Min-Kyung 한국치위생학회 2017 한국치위생학회지 Vol.17 No.4

Objectives: The purpose of this study is to investigate the antibacterial effect of Streptococcus mutans of tea tree ingredient. Methods: The experimental groups were each given with different concentrations (30 or 50 vol%) of tea tree prepared in saline solution. The control group applied only saline solution. The tea tree coating of the specimen were examined under a scanning electron microscope. For the antibacterial activity test of the tea tree, the contact angle of the tea tree- coated specimen's surface was analyzed. The antibacterial effect against Streptococcus mutans was determined by counting the colony forming units (CFU). The statical statics were evaluated by using one-way ANOVA and paired t-test. Results: The tea tree treated group of hydrophilic more than non treated group. Antibacterial experiments demonstrated that tee tree solution was effective against Streptococcus mutans. However there was no significant difference in depending solution concentration groups. Conclusions: The antimicrobial activity of the tea tree containing solution showed its potential for use as coating for denture and medical materials.

신안선 선박 연구 현황과 전망

최유리(Choi Yu Ri) 국립광주박물관 2020 아시아 도자문화 연구 Vol.- No.3

VLS 합성법을 이용한 ZnO 나노구조의 특성

최유리 ( Yu Ri Choi ),정일현 ( Il Hyun Jung ) 한국공업화학회 2009 공업화학 Vol.20 No.6

치과의료관광에 대한 인식과 활성화 방안

최유리 ( Yu Ri Choi ),장선옥 ( Sun Ok Jang ),조윤정 ( Yoon Jeong Cho ),심연수 ( Youn Soo Shim ) 한국치위생학회(구 한국치위생교육학회) 2015 한국치위생학회지 Vol.15 No.5

Objectives: The purpose of the study is to investigate the awareness and activation towards dental medical tourism. Methods: A self-reported questionnaire was completed by 195 dental hygienists in Seoul from January 30 to September 15, 2014. Data were analyzed by one way ANOVA, chi square and t test using SPSS 19.0 program. the questionnaire consisted of general characteristics of the subjects, awareness towards medical tourism, medical tourism related hospitals, activation of Korean medical tourism, fields of medical tourism, and improvement of medical tourism. The questionnaire was adapted and modified from Kim and Kim by Likert scale. Results: Dental hygienists gave the high perception and possibility towards medical tourism (94.1%). Those carrying out medical tourism accounted for 39.5 percent. The most difficult problem was communication with foreigners (80.5%). The performance of prosthesis and anesthesia was the most specialized area that supported the medical tourism (84.1%). In order to improve the medical tourism implementation, dental medical technology must be strengthened (39.8%). Conclusion: The desirable dental medical tourism must be carried out by proficient dental medical manpower, higher technology, active participation and financial support by the government. This dental medical tourism will provide job opening for the dental hygienists.

상업전기차량용 이동형 플렉시블 충전시스템

최유리(Yu-Ri Choi),김성영(Seong-Yeong Kim),지수연(Su-Yeon Ji),전주현(Ju-Hyun Jeon),김효열(Hyo-Yeol Kim),김문석(Moon-Suk Kim),박영훈(Young-Hoon Park) 한국조명·전기설비학회 2022 한국조명·전기설비학회 학술대회논문집 Vol.2022 No.5

네트워크 속성이 중소기업의 국제화 속도에 미치는 영향에 관한 연구

최유리(Yu-Ri Choi),방호열(Ho-Yeol Bang) 한국무역연구원 2015 무역연구 Vol.11 No.6

This research divided social capital into three dimensions: structural capital, relational capital and cognitive capital. Besides examining how each type of dimensions affects the internationalization speed of SMEs, this study likewise investigated the moderating role of CEO innovativeness relative to the relationship between network dimensions and internationalization speed. The hypotheses were empirically tested by using the data collected through quedtionnaire survey with the CEOs of SMEs in Pusan and South Kyeongsang area in Korea. Research results based on the hypothesis verification analysis - led me to partially choose the hypothesis stating that network dimensions would influence the internationalization speed of SMEs. However, I dismissed the hypothesis that CEO innovativeness plays a moderating role in the relationship between network dimensions and internationalization speed. Research results have the following theoretical and practical contributions. This research applied network approach to certain regions to analyze them, and it has a theoretical significance as there was a noticeable result when the network approach was applied to SMEs in Busan and South Kyeongsang region. Also, from the practical perspective, the research suggested that SMEs can complement or use the knowledge and resource disadvantages, which they face while pushing toward internationalization, through the social capital within the network. Finally, the research can give a strategically useful implication to SMEs, which cannot put the potential benefits of internationalization into practice due to the lack of internal resources and their own abilities.

치간공극폐쇄를 위한 교정용 고무밴드로 인한 치주조직의 의원성 손상 증례보고

최유리 ( Yu Ri Choi ),문성용 ( Seong Yong Moon ) 조선대학교 치의학연구원 2013 Oral Biology Research (Oral Biol Res) Vol.37 No.1

The orthodontic rubber band has been widely used for several orthodontic purpose especially for diastema closure of maxillary central incisors. However, improper use of orthodontic rubber band results in periodontal disease and sometimes makes tooth loss. Cases on iatrogenic periodontal destruction have been reported from 1870s. As treatment for this, several treatments have been introduced. But above all, to prevention this disease, it is most important to remove the orthodontic rubber band at proper time. The aim of this study was to report a case of a male patient who had iatrogenic periodontal disease for 9 years due to improper use of orthodontic rubber band for upper maxillary anterior diastema closure.

식물 유래 다당류/단백질 기반 마이크로캡슐/에멀젼 제조 및 평가

최유리 ( Yu Ri Choi ),임형준 ( Hyung Jun Lim ),이존환 ( John Hwan Lee ),오성근 ( Seong Geun Oh ) 대한화장품학회 2015 대한화장품학회지 Vol.41 No.4

본 연구에서는 다당류와 단백질의 이온 결합으로 구성된 마이크로캡슐 및 에멀젼을 제조하여 다당류, 단백질의 비율에 따른 마이크로캡슐과 에멀젼의 안정도를 평가하였으며, 마이크로캡슐의 내부 오일도 종류별로 실험하였다. 에멀젼 입도를 줄여 안정도를 높여주기 위해 고압유화기를 이용하여 에멀젼을 제조하였으며 내부 담지 물질로 코엔자임 Q10 안정화를 관찰한 결과 대조군 대비 역가 하락이 없었다. 석유 유래 계면활성제가 아닌 천연 유래 원료만으로 안정한 마이크로캡슐 제조에 성공한 것이다. 광학현미경, 투과전자현미경을 이용하여 마이크로캡슐 및 에멀젼의 물리적 안정도를 관찰하고 에멀젼의 구조분석을 하였으며, 입자의 표면전위 측정을 통하여 pH 조절에 의해 제조되는 다당류/단백질 마이크로캡슐의 제조 메커니즘을 설명한다. A novel microcapsule/emulsions for cosmetics was studied. Our present studies demonstrate that the biopolymer- stabilized microemulsion composed of polysaccharide and protein can encapsulate and stabilize remarkably coenzyme-Q10 (Q10). Polysaccharide and protein complex were incorporated in the microcapsule in order to reinforce the physical strength of the microspheres. We compared the long-term stability of the activity of Q10 in biopolymer- stabilized microemulsion. There was no noticeable negative effect on the activity of Q10. Optical microscope (OM) and transmission electron microscope (TEM) showed that microcapsules were spherical and had a smooth surface. Consequently, the polysaccharide/protein emulsion produced in this study may be beneficial in improving the emulsion stability and the protection capability of labile substances.

티트리 성분 함유 의치세정제의 항균 효과

최유리 ( Yu-ri Choi ),배성숙 ( Sung-suk Bae ),강민경 ( Min-kyung Kang ) 한국치위생과학회 2016 치위생과학회지 Vol.16 No.6

본 연구의 목적은 천연 식물 중 허브의 일종인 티트리 성분이 함유된 의치세정제를 제조하고 레진의 표면을 분석하고 항균 효과를 평가하고자 하였으며, 다음과 같은 결과를 얻었다. 티트리 오일이 각각 30 vol%, 50 vol% 첨가된 실험군 의치세정제를 제조하였으며 실험군 티트리 오일에서 24시간, 48시간 보관한 후 표면 경도를 확인한 결과 대조군 생리식염수와 유의한 차이가 없었으며, 시간에 따른 변화 역시 유의한 차이가 없었다. 의치상의 색상변화를 확인하기 위해 색차색도계를 이용하여 24시간, 48시간에 따른 전체변화량△E*값을 확인한 결과 대조군 생리식염수와 유의한 차이가 없어 티트리 의치세정제가 의치표면의 색변화를 나타내지 않았다. 마지막으로 항균력을 평가한 결과 실험군인 티트리50%군에서는 3.18±2.59 CFU/ml로 원액과 유의차를 확인할 수 없었지만 30%군보다는 높은 항균력을 보였다. 30%군에서는 36.81±28.42 CFU/ml로 대조군보다는 높은 항균력을 보였지만 50%군과 티트리 원액 실험군보다는 낮은 항균력을 나타냈다. 따라서 티트리 오일이 함유된 의치세정제는 의치상용레진에 물리적 기계적 변화 없이 우수한 항진균력을 보여 향후 천연성분인 티트리 오일이 함유된 의치세정제 개발을 위한 기초 자료로 활용될 수 있을 것이라 생각된다. The purpose of this study was to evaluate the antibacterial effect of tea tree oil in denture cleaners. A self-curing denture resin was used to make the experimental specimen (12 mm×2 mm). A saline solution was used as the control. To observe surface changes after cleaning, the mic-rohardness and color of the experimental specimen`s surface were analyzed. For the antibacterial activity test, Candida albicans was used. The microhardness and color of the surface remained unchanged after cleaning. The result of the antibacterial activity test revealed that the tea tree oil-containing solutions had a more enhanced antibacterial effect than did the saline solution. Therefore, these results suggest that the tea tree oil-containing solution is a promising denture cleaners.

전통 패션 기반 현대 패션브랜드에 나타난 문화적 지속가능성에 관한 연구 - 한국, 일본, 벨기에 브랜드 사례를 중심으로 -

최유리 ( Yu Ri Choi ),마진주 ( Jin Joo Ma ) 복식문화학회 2021 服飾文化硏究 Vol.29 No.6

The purpose of this study is to analyze how modern fashion brands practice cultural sustainability by investigating the ways they use and reinterpret traditional culture and clothing. The transmission and reinterpretation of traditional cultural elements connect the past, present, and future. These forces also lead to the development of new creativity in the fashion industry. Three brands have been selected for case studies: Danha (Korea), Mittan (Japan), and Jan Jan Van Essche (Belgium). These brands possess in-depth understanding of traditional cultural elements, including clothing, dyeing techniques, and patterns unique to various regions and minority groups. The brands all make use of traditional cultural identities whose clothing contains the historical and sentimental values of various regions and ethnic groups. The use and mixing of various cultures can be seen as the respectful preservation of global culture. Also, in contemporary fashion, the use of traditional culture plays an important role in the presentation and development of creative designs. The use of traditional handicraft techniques and the use of traditional clothing in the past convey cultural diversity to future generations; they will have a lasting influence on future fashion trends. The results of the study show that cultural sustainability in contemporary fashion has been implemented through safeguarding and respecting indigenous cultures and developing cultural elements into creative design.