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Yu, Min,Howe, Jane,Jeong, Kyunghoon,Shim, Inbo,Kim, Woochul,Kim, Chulsung,Ahn, Jaepyoung,Lee, Jaegab,Urban, Marek W. Royal Society of Chemistry 2010 Journal of materials chemistry Vol.20 No.27
<P>Biologically active 1,2-bis(10,12-tricosadiynoyl)-<I>sn</I>-glycero-3-phosphocholine (DC<SUB>8,9</SUB>PC) nanotube-forming phospholipids (PLs) have been utilized as templates to prepare ferromagnetic nanotubes (FMNTs). Combining X-ray diffraction (XRD), selected area electron diffraction (SAD), high-resolution transmission electron microscopy (HRTEM), Raman, and Mössbauer spectroscopy measurements, FMNTs morphological features and chemical composition were determined. These studies showed that FMNTs consist of iron oxide/carbon/iron oxide concentric nanotubes with the amorphous carbon phase sandwiched between two iron oxide layers. The iron oxide phase consists of nanocrystalline magnetite (Fe<SUB>3</SUB>O<SUB>4</SUB>) which coexist as tetrahedral Fe<SUP>3+</SUP> and octahedral Fe<SUP>2.5+</SUP> sites containing minute quantities of hematite (α-Fe<SUB>2</SUB>O<SUB>3</SUB>) phase. The carbon phase consists of amorphous carbon forming an amorphous carbon nanotube (ACNT). Magnetic measurements showed that saturation magnetization (M<SUB>s</SUB>) of FMNTs is 79 emu/g, but upon removal of the iron oxide outer and inner layers, ACNTs become paramagnetic. The electrical resistivity (ρ) of single FMNT is 3.3 × 10<SUP>−2</SUP> Ω·m, which decreases to 5.06 × 10<SUP>−4</SUP> Ω·m for ACNT. These magneto-electric properties can be easily tailored, depending upon desired applications and needs.</P> <P>Graphic Abstract</P><P>Biologically active phospholipids were utilized in the synthesis of ferromagnetic nanotubes (FMNT) which consist of iron oxide/carbon/iron oxide concentric layers with the amorphous carbon nanotube phase (ACNT) sandwiched between two magnetite layers. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c0jm00753f'> </P>
Xiaolei Yu,Kyunghoon Kim,Tony C Garrett,Chunlin Yuan,Shuman Wang 글로벌지식마케팅경영학회 2018 Global Marketing Conference Vol.2018 No.07
With the rapid development of network economy and information technology, customers through the internet platform to participate in product development and innovation, dominant the spread of value proposition engagement spread, etc., has become an important part of the creation of customer assets, as well as a profound change in brand management. This paper constructs a model of how the brand experience affects customer assets in the virtual branding community under the perspective of value co-creation, analysis the impact of value co-creation of customer participation (sponsored value co-creation and autonomous value co-creation), the motivation of value co-creation on brand experience, and then on customer assets. This paper also explores the regulatory effect of value proposition engagement in brand experience and customer asset. This study will use the involvement theory and the theory of stimulus-response for empirical research, and through the questionnaire survey of consumers, using SPSS20.0 and AMOS20.0 statistical software on the relevance of relevant variables to grasp, and carries on the analysis using structural equation model. The research of this paper will enrich the exposition and explanation of building a brand experience better through value co-creation in virtual brand community, and provide theoretical support and practical advice for the implementation and management of customer assets.
기도 내 이물질 소아에서 단순 흉부방사선사진과 가슴 전산화단층촬영
박유미 ( Yu Mi Park ),김경훈 ( Kyunghoon Kim ),이혜진 ( Hye Jin Lee ),이의경 ( Eu Kyoung Lee ),양은애 ( Eun Ae Yang ),김환수 ( Hwan Soo Kim ),전윤홍 ( Yoon Hong Chun ),윤종서 ( Jong-seo Yoon ),임수아 ( Soo Ah Im ),김현희 ( Hyun He 대한천식알레르기학회 2018 Allergy Asthma & Respiratory Disease Vol.6 No.5
Purpose: This study aimed to evaluate the diagnostic value of radiologic findings in children with suspected foreign body aspiration. Methods: A retrospective medical chart review was done on 32 children with suspected foreign bodies in terms of age, sex, symptoms, signs, bronchographic findings, and type and location of foreign bodies. The diagnostic value of radiography was analyzed: 29 with chest anteroposterior (AP) or posteroanterior (PA) view, 23 with chest lateral decubitus view, 27 with chest computed tomography (CT), 29 with chest AP, PA or chest lateral decubitus view, and 25 with bronchoscopy. Results: As a measure for detecting foreign body aspiration, the sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of radiologic findings were: chest AP or PA view, 50%, 100%, 100%, 29.4%, and 58.6%, respectively; chest lateral decubitus view, 57.9%, 50.0%, 84.6%, 20.0%, and 56.5%, respectively; chest AP, PA or chest lateral decubitus view, 69.6%, 66.7%, 88.8%, 36.4%, and 69.0%, respectively; and chest CT, 100.0%, 85.7%, 95.2%, 100.0%, and 96.2%, respectively. Conclusion: There is clinical benefit to take chest radiographs to diagnose foreign body aspiration. However, based on the results of this study, it may be not necessary to take chest lateral decubitus to diagnose foreign body aspiration. If chest radiographs show unilateral hyperinflation, foreign body aspiration can be diagnosed. In cases of normal chest radiography and history of a witnessed choking episode combined with positive signs, the diagnosis of airway foreign body aspiration should be made by using chest CT. (Allergy Asthma Respir Dis 2018;6:241-247)
K-pop 걸그룹 뉴진스의 음악에 나타난 모드 선율기법 특징 연구
유현정(Hyunjeong Yu),한경훈(kyunghoon Han) 한국문화융합학회 2024 문화와 융합 Vol.46 No.1
본 연구의 목적은 K-pop 걸그룹 뉴진스 음악에서 나타나는 모드 선율기법의 양상이 어떠한지 분석하고그 특징을 도출하여 현시대 K-pop의 음악적 동향을 파악하는 데 유의미한 참고 자료로 활용함에 있다. 국내 K-pop 시장을 넘어 빌보드 차트에서도 흥행을 이어가고 있는 뉴진스의 여덟 곡을 선정하여 음악적 분석을 수행하였다. 연구 대상의 선정 기준은 뉴진스의 음악 중 빌보드 글로벌 차트 200위권 이내에 100일 이상 머무른 곡만 선정함으로써 최대한 영향력 있는 곡만 분석하는 것으로 하였다. 연구의방법으로는 먼저, 선행연구 자료를 통해 조성음악의 사용과 선법음악의 활용에 장음계와 단음계의 규칙성이 있는 공통되는 음을 구별함으로써 모달 인터체인지의 사용 유형을 분석하는 접근 방식을 채택하였고, 분석 결과, 뉴진스 음악에 사용된 선법 유형은 전체적으로 노래의 기능에 따라 형식이 달라졌으며, 연구 대상 네 곡에서 총 세 종류의 선법이 다양하게 사용된 점, 나머지 한 곡에서는 펜타토닉 스케일이 사용된 점 등 뉴진스의 케이팝이 선율의 사용에 있어 다양성을 제시하고 있다는 시사점이 도출되었다. K-pop이 단지 보여지는 퍼포먼스 중심의 음악으로 그치는 것이 아닌 음악적 깊이와 다양성을 겸비하는 발전 양상을 띠고 있음이 확인되었다. The purpose of this study is to analyze the aspects of mode melody techniques that appear in the music of K-pop girl group NewJeans, derive their characteristics, and use them as meaningful reference material in understanding the musical trends of contemporary K-pop. A musical analysis was performed by selecting eight songs from NewJenes, which are continuing to be a hit not only in the domestic K-pop market but also on the Billboard charts. The criteria for selecting the research subject was to analyze only songs that were as influential as possible by selecting only songs from NewJenes' music that stayed in the top 200 of the Billboard Global Chart for more than 100 days. As a research method, we first adopted an approach to analyze the use pattern of modal interchange by distinguishing common notes with regularity of major and minor scales in the use of tonal music and mode music through previous research data. As a result, the type of mode used in NewJeans' music differed in form depending on the function of the song as a whole, with a total of three types of mode used in various ways in the four songs studied, and the pentatonic scale used in the remaining song. The implication was drawn that NewJeans' K-pop presents diversity in the use of melody. It has been confirmed that K-pop is not just a performance-oriented music, but is developing to include musical depth and diversity.