수종 교정용 접착제의 전단 접착강도 비교

유미희,황충주 대한치과교정학회 1994 대한치과교정학회지 Vol.24 No.2

Bonding of brackets is one of the essential factors for successful orthodontic treatment, so bond strength of orthodontic adhesives are very important. The purposes of this research were to compare shear bond strength of various orthodontic adhesives and to evaluate failure sites. One-hundred twenty extracted human first premolars were prepared for bonding and premolar brackets were bonded to prepared enamel surfaces with super C Ortho, Mono-Lok², Transbond, and Super C Ortho after applying Fluorobond. After bonding of brackets, teeth specimens were divided into 3 groups. In group I specimens were stored at humidor 37℃ in 1 hours, in group 2 specimens were stored at humidor 37℃ in 24 times, thermocycled 10 times and in group 3 specimens were stored at humidor 37℃ in 24 hours, thermocycled 1800 times. Then the universal testing machine Instron 6022, Instron Co., U.S.A. was used to test the shear bond strength of brackets to enamel. After debonding, brackets and enamel surfaces were examined under stereoscopic microscope to determine the failure sites. The results were as follows: 1. Shear bond strength was significantly highest of using Super C Ortho after applying Fluorobond and Super C Ortho In group 1, was highest of using super C Ortho in group 2, and was highest of using Mono-Lok²in group 3. 2. According to time and temperature change, in using Super C Ortho the group 2 had significantly highest strength and group 3 had lowest strength, than group 1 and in using Super C Ortho after applying Fluorobond shear bond strength decreased constantly. 3. The failure sites were tooth-resin interface in Super C Ortho after applying Fluorobond, Mono Lok²and Transbond and were at almost same ratio bracket base-resin interface and tooth-resin interface in Super C Orth.

소목(Caesalpinia sappan) 추출물의 Streptococcus mutans에 대한 성장, 산생성, 부착 및 비수용성 글루칸 합성 억제에 미치는 영향

유용욱,유현희,김윤정,유미선,서세정,이황,이흥수 대한구강보건학회 2003 大韓口腔保健學會誌 Vol.27 No.2

Streptococcus mutans is known as the causative bacterial playing the most important role in forming plaque and it is being noticed as major causative bacteria of dental caries. Therefore, development of more effective, substantial and safe preventive agent against dental caries and periodontal disease is honestly required. The present study was designed to investigate the effect of chloroform extract(CE), n-butanol extract(BE),methanol extract(ME) and water extract(WE) of Caesalpinia on the growth, acid production, adhesion, and insoluble glucan synthesis of Streptococcus mutans. The CE, BE, ME and WE decreased the growth and acid production of S.mutans than that of control, especially, the ME was more effective than other extracts. The effect of CE, BE, ME and WE on the adherences to saliva-coated hydroxyapatite bead(S-HA) were evaluated. At the concentration of 2,000 ㎍/㎖, the CE showed 32% rate of bacterial adherence to S-HA, whereas, other extracts of the same concentration producedgreater than 50% rate. The CE and BE were significantly decreased the reduction rates of water insoluble glucan formation from sucrose by crude glucosyltransferase of S.mutans. Thus, the application of C. sappan can be considered a useful and a practical method for the prevention of dental caries.

2002학년도 재학생 실태조사

조용하,김미희,황유정,조희숙 東亞大學校 學生生活硏究所 2003 學生硏究 Vol.31 No.-

Cardiac Implantable Electronic Device Safety during Magnetic Resonance Imaging

You Mi Hwang,Jun Kim,Ji Hyun Lee,Minsu Kim,Gi-Byoung Nam,Kee-Joon Choi,You-Ho Kim 대한심장학회 2016 Korean Circulation Journal Vol.46 No.6

Background and Objectives: Although magnetic resonance imaging (MRI) conditional cardiac implantable electronic devices (CIEDs) have become recently available, non-MRI conditional devices and the presence of epicardial and abandoned leads remain a contraindication for MRIs. Subjects and Methods: This was a single center retrospective study, evaluating the clinical outcomes and device parameter changes in patients with CIEDs who underwent an MRI from June 1992 to March 2015. Clinical and device related information was acquired by a thorough chart review. Results: A total of 40 patients, 38 with a pacemaker (including epicardially located pacemaker leads) and 2 with implantable cardioverter defibrillators, underwent 50 MRI examinations. Among the patients, 11 had MRI conditional CIEDs, while the remaining had non-MRI conditional devices. Among these patients, 23 patients had traditional contraindications for an MRI: (1) nonfunctional leads (n=1, 2.5%), (2) epicardially located leads (n=9, 22.5%), (3) scanning area in proximity to a device (n=9, 22.5%), (4) devices implanted within 6 weeks (n=2, 5%), and (5) MRI field strength at 3.0 Tesla (n=6, 15%). All patients underwent a satisfactory MRI examination with no adverse events during or after the procedure. There were no significant changes in parameters or malfunctioning devices in any patients with CIEDs. Conclusion: Under careful monitoring, MRI is safe to perform on patients with non-MRI conditional CIEDs, remnant leads, and epicardially located leads, as well as MRI-conditional devices.

Anomalous systemic arterial blood supply to the LungTreated with angiographic embolization

( You Mi Hwang ),( Yong Geun Park ),( Yun Mi Shin ),( Jun Ki Bae ) 대한내과학회 2011 대한내과학회 추계학술대회 Vol.2011 No.-

Anomalous systemic arterial blood supply to the lung Treated with angiographic embolization

( You Mi Hwang ),( Yong Geun Park ),( Yun Mi Shin ),( Jun Ki Bae ) 대한내과학회 2011 대한내과학회 추계학술대회 Vol.2011 No.1

Case A case of 20-year old male presented with hemoptysis, which amounted 20-30cc daily for a week. Contrast enhanced CT which revealed anomalous arterial supply to the right lower lobe. We thought of pulmonary sequestration and bronchoscopic evaluation was done. But unlike pulmonary sequestration, normally communicating tracheobronchial tree was confirmed. Management We decided to obliterate the anomalous artery by means of proximal occlusion with angiopraphic embolization. The patient was treated successfully with angiographic embolization. There was no immediate complication after radiologic intervention. Hemoptysis resolved completely and the patient was discharged. The patient has shown no additional symptom nor other complication during 1 year follow up period. Conclusion Anomalous systemic arterial blood supply to the lungs is a rare anomaly of lung development. Although not a sequestration, it does have many of the features of sequestration and also treated by surgical approach mainly. Lobectomy, segmentectomy and in case of normal bronchial connection, anastomosis between the anomalous artery and the pulmonary artery have been done formerly. But in this case we present relatively non-invasive angiographic embolization as treatment for anomalous arterial supply of the lung, which was treated successfully. And during short term (1year) follow up, there was no complication related to the procedure or symptom relapsed. But as there is lack of evidence of the procedure on such diseases entity, long term follow up is needed.

Decursin inhibits UVB-induced MMP expression in human dermal fibroblasts via regulation of nuclear factor-κB.

Hwang, Bo-Mi,Noh, Eun-Mi,Kim, Jong-Suk,Kim, Jeong-Mi,Hwang, Jin-Ki,Kim, Hye-Kyung,Kang, Jae-Seon,Kim, Do-Sung,Chae, Han-Jung,You, Yong-Ouk,Kwon, Kang-Beom,Lee, Young-Rae D.A. Spandidos 2013 INTERNATIONAL JOURNAL OF MOLECULAR MEDICINE Vol.31 No.2

<P>Decursin, a coumarin compound, was originally isolated from the roots of Angelica gigas almost four decades ago, and it was found to exhibit cytotoxicity against various types of human cancer cells and anti-amnesic activity in vivo through the inhibition of AChE activity. However, the anti-skin photoaging effects of decursin have not been reported to date. In the present study, we investigated the inhibitory effects of decursin on the expression of matrix metalloproteinase (MMP)-1 and MMP-3 in human dermal fibroblast (HDF) cells. Western blot analysis and real-time PCR revealed that decursin inhibited the ultraviolet (UV)B-induced expression of MMP-1 and MMP-3 in a dose-dependent manner. Decursin significantly blocked the UVB-induced activation of nuclear factor-κB (NF-κB). However, decursin showed no effect on MAPK or AP-1 activity. In this study, decursin prevented the UVB-induced expression of MMPs via the inhibition of NF-κB activation. In conclusion, decursin may be a potential agent for the prevention and treatment of skin photoaging.</P>

2019 대한부정맥학회 경피적심혈관중재술을 받는 심방세동 환자에서 항응고 치료 지침

황유미 ( You Mi Hwang ),이지현 ( Ji Hyun Lee ),이기홍 ( Ki Hong Lee ),임우현 ( Woo-hyun Lim ),심재민 ( Jaemin Shim ),이영수 ( Young Soo Lee ),박진규 ( Jin-kyu Park ),김태훈 ( Tae-hoon Kim ),김준 ( Jun Kim ),정보영 ( Boyoung Joung 대한내과학회 2019 대한내과학회지 Vol.94 No.4

The choice of an adequate antithrombotic regimen for atrial fibrillation patients undergoing emergent or elective percutaneous coronary intervention (PCI) should be based on the ischemic event and on the risk of bleeding. Recent randomized controlled trials have consistently demonstrated that dual antithrombotic therapeutic regimens, using non-vitamin K anticoagulants and clopidogrel, are superior to triple or dual therapy with warfarin and aspirin. This report incorporates findings of recent notable studies to provide concrete, clinically useful details and recommendations for bleeding risk assessment and optimal antithrombotic therapeutic strategies after PCI. In addition, we introduce guidelines for antithrombotic management after structural heart disease intervention. (Korean J Med 2019;94:330-342)

키즈카페의 서비스 품질과 고객만족, 충성도 간의 관계

황유미 ( Hwang You-mi ),김윤서 ( Kim Yoon-seo ),신형철 ( Shin Hyoung-chul ) 한국관광산업학회 2020 Tourism Research Vol.45 No.4

키즈카페의 시장이 커지게 되면서 업체 간의 경쟁이 심화됨에 따라 서비스품질이 중요하게 부각되고 있다. 따라서 본 연구의 목적은 키즈카페의 서비스품질과 고객만족, 충성도 간의 관계를 검증하는데 있다. 선행연구를 바탕으로 이론적 고찰 및 설문지를 작성하여, 판단표본추출 방법으로 영유아 자녀가 있으면서 키즈카페를 방문 하였던 부모들을 대상으로 설문조사를 실시하였다. 설문지는 2019년 8월 15일부터 8월 23일까지 배포 및 수거하였다. 설문조사에서는 총 405부를 배포하고, 전량 회수하였으며, 이 중에서 데이터로 사용할 수 없다고 판단한 설문지 29부를 제외하고 총 376부를 통계분석에 사용하였다. 가설 1, “서비스품질은 고객만족에 정(+)의 영향을 미칠 것이다.”라는 가설은 부분 채택되었다. 다만, 서비스품질 요인 중 결과품질은 고객만족에 정(+)의 영향을 미치지 않는 것으로 나타났다. 가설 2, “고객만족은 충성도에 정(+)의 영향을 미칠 것이다.”라는 가설은 채택되었다. 가설 3, “서비스 품질은 고객만족을 매개로 충성도에 정(+)의 영향을 미칠 것이다.”라는 가설은 부분 채택되었다. 다만, 서비스품질 요인 중 결과품질은 고객만족을 매개로 하여 충성도에 정(+)의 영향을 미치지 않는 것으로 나타났다. 본 연구는 키즈카페의 경영자에게 차별적 경영과 경쟁력 제고를 위한 방향을 제시함으로써, 서비스의 질을 향상시키기 위한 마케팅 전략을 구축하는데 유용한 자료를 제공하였다. As the market for kids cafes grows, the quality of service has become important in competition between companies. Therefore, the purpose of this study is to verify the relationship between the service quality and customer satisfaction and loyalty of the Kids Cafe. Theoretical consideration and questionnaire were prepared based on prior research. As a method of sampling judgment, a survey was conducted on parents who had infants and children and visited kids cafes. The questionnaire was distributed and collected from August 15, 2019 to August 23, 2019. In the survey, a total of 405 copies were distributed, and 376 of them were used for statistical analysis, except for 29 of them that were determined not to be available as data. For Hypothesis 1, the hypothesis that "service quality will have a positive effect on customer satisfaction" was partially adopted. Out of the service quality factors, the result quality was rejected. For Hypothesis 2, the hypothesis that "customer satisfaction will have a positive effect on loyalty" was adopted. For Hypothesis 3, the hypothesis that "service quality will have a positive effect on loyalty by means of customer satisfaction" was partially adopted. Out of the service quality factors, the result quality was rejected. This study provided useful data for building marketing strategies to improve the quality of service by presenting a direction for discriminative management and enhancing competitiveness to the managers of kids Cafe.

HMR 패키지디자인 속 푸드 스타일링이 소비자태도와 재구매의도에 미치는 영향

황유미(Hwang, You-Mi),나정기(Na, Jung-Ki) 한국식공간학회 2017 식공간연구 Vol.12 No.2

본 연구에서는 소비자들이 HMR을 접했을 때 패키지디자인 속 푸드 스타일링 연출이 소비자태도와 재구매의도에 미치는 영향과 푸드 스타일링 연출 적용의 여부가 HMR 패키지사진의 소구력과 설득력에 어떠한 영향을 미치는지 알아보고, 보다 효과적인 표현의 장치로써 푸드 스타일링의 역할과 마케팅적 시사점을 제시하는데 그 목적을 두었으며 이상의 연구결과를 요약하면 소비자들이 HMR을 접했을 때 패키지디자인 속 푸드 스타일링 연출이 소비자태도와 재구매의도에 상호 유의미한 관계를 가지고 있는 것으로 나타났다. 즉, 푸드 스타일링은 식품산업의 다양한 분야에서 시각적인 설득력이 있는 커뮤니케이션 도구이며, 효과적인 마케팅 도구로써도 활용되어 질 수 있다고 사료된다. 또한 본 연구의 결과로, 푸드 스타일링이 HMR 제품뿐만 아니라 식품산업 전반에 있어 시각적 효과를 배가시키는 판매 촉진적 역할과 마케팅적 가치를 지님을 인식하고 HMR 제품 뿐 아니라 식생활, 외식산업과 관련된 다양한 제품의 시각적 커뮤니케이션 도구로써도 적절하게 활용되어 시너지 효과를 발휘할 수 있기를 기대해 본다. This study aims to investigate how the dramatic composition of food styling found in the package images affects perceived value, consumer attitude and repurchase intention when the consumer first encounters HMR and whether the presence of dramatic composition of food styling affects the appealing and persuasive power of the HMR package image. This study also aims to suggest roles for food styling as a mechanism for expression with greater effectiveness and propose its marketing implications. Furthermore, another objective of study is to suggest a direction in which food styling can be utilized as a visual transmission mechanism that is faster and more appealing than language in food package marketing. From these research results, it was revealed that food styling in package images has mutually significant relationships with perceived value, consumer attitude and repurchase intention when the consumer encounters HMR. Therefore, the study believes that food styling may be utilized as a visually persuasive communication tool as well as an effective marketing tool in numerous areas of the food industry. In addition, it is anticipated that the sales promoting strategic mechanism and marketing value of food styling, which multiplies the visual effects for HMR products and the entire food industry, will be acknowledged and that food styling will create a synergic effect when used adequately as a visual communication tool for various products related to diet, through the results of the study.