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Yun, Ju Hui,Kang, Yu Jin,Han, Si Hyun,Lee, Jun Yeob The Royal Society of Chemistry 2018 Journal of Materials Chemistry C Vol.6 No.2
<P>Two trisdibenzofuran-derived compounds, 4,2′:8′,4′′-terdibenzo[<I>b</I>,<I>d</I>]furan (TDBF) and [4,2′:8′,4′′-terdibenzo[<I>b</I>,<I>d</I>]furan]-6,6′′-dicarbonitrile (CNTDBF), were developed and investigated as electron transport type exciton blocking materials of blue phosphorescent organic light-emitting diodes (PhOLEDs). TDBF was a trisdibenzofuran-type material without any substituent, and CNTDBF was a CN-modified trisdibenzofuran type material. The introduction of the trisdibenzofuran core provided a high triplet energy of more than 2.78 eV for use as an exciton blocking material in blue PhOLEDs, and the additional CN modification of the trisdibenzofuran moiety was effective for improved electron injection, electron transport and thermal stability and extension of the driving lifetime of the blue PhOLEDs. Among the two materials, CNTDBF provided a low driving voltage, a high quantum efficiency, a low efficiency roll-off and an extended lifetime.</P>
Yun, Ju Hui,Han, Si Hyun,Lee, Jun Yeob Elsevier 2018 ORGANIC ELECTRONICS Vol.62 No.-
<P><B>Abstract</B></P> <P>Diphenylsilane-derived high triplet energy host materials were developed by coupling diphenylsilane with CN-modified carbazoles. Two host materials with two CN-modified carbazoles or one CN-modified carbazole were synthesized, and their photophysical and device behavior were investigated. The host materials delivered a high triplet energy over 3.00 eV, a high glass transition temperature over 130 °C, ambipolar charge transport, and high external quantum efficiency over 20% as hosts of deep blue-emitting Ir emitters.</P> <P><B>Highlights</B></P> <P> <UL> <LI> High triplet energy hosts for deep blue phosphorescent organic light-emitting diodes. </LI> <LI> Diphenylsilane and CN modified carbazole derived hosts for ambipolar charge transport. </LI> <LI> High external quantum efficiency over 20% in the deep blue phosphorescent organic light-emitting diodes. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
윤주희(Yun, Ju-Hui),부선주(Boo, Sunjoo) 학습자중심교과교육학회 2019 학습자중심교과교육연구 Vol.19 No.5
본 연구는 간호대학생의 감성지능, 대인관계능력 및 임상실습스트레스 정도를 확인하고 임상실습스트레스에 미치는 영향요인을 파악하기 위한 서술적 조사연구이다. 본 연구는 2015년 8월 27일부터 9월 17일까지 경기도 A대학과 충청도 B대학교 간호 학과 4학년 재학생 192명을 대상으로 진행하였다. 일반적 특성, 감성지능, 대인관계 능력, 임상실습스트레스척도를 사용하여 측정하였다. 수집된 자료는 SPSS 18.0을 이용하여 기술통계, t-test, ANOVA, Pearson’s Correlation 및, Multiple Regression analysis로 분석하였다. 대상자의 일반적 특성에 따른 임상실습스트레스의 차이를 확인한 결과 종교, 간호학전공만족도, 임상실습만족도, 임상실습시간의 만족도에 따라 임상실습스트레스 수준에 유의한 차이를 보였으며, 임상실습스트레스와 감성지능 및 대인관계능력은 음의 상관관계를 보였다. 간호대학생의 임상실습스트레스에 가장 영향을 미치는 요인은 감성지능이었으며 추후 감성지능을 높이고 활용할 수 있도록 감성지능향상프로그램을 개발하여 적용함으로써 그 효과성을 검증할 수 있는 연구를 시도할 필요가 있다. This descriptive survey was aimed to identify the effects of nursing students’ emotional intelligence and interpersonal relationship ability on their stress on clinical practice. Anonymous paper-based surveys were conducted for a convenience sample of 192 fourth-year nursing students from A University in Gyeonggi-do and B University in Chungcheong-do from September 17th to August 27th, 2015. Subjects completed a questionnaire including demographic characteristics, Emotional Intelligence Scale, Relationship Change Scale, and Clinical Practice Stress Scale. Data were analyzed with descriptive statistics, t-tests, ANOVA, Pearson’s Correlation, and Multiple Regression. The overall mean score of the stress on clinical practice was 3.41 out of 5. Levels of stress on clinical practice differed by religion, satisfaction in the nursing major, satisfaction in clinical practice, and length of clinical practice experience. Stress on clinical practice was negatively correlated with emotional intelligence and interrelationship ability. The strongest factor affecting the levels of stress on clinical practice was emotional intelligence. Approaches that focus on enhancing emotional intelligence may reduce the stress on clinical practice among nursing students.
고윤희 ( Go Yun Hui ),김미라 ( Kim Mi La ),홍재식 ( Hong Jae Sig ),김주명 ( Kim Ju Myeong ),홍준식 ( Hong Jun Sig ),조준형 ( Jo Jun Hyeong ),윤재범 ( Yun Jae Beom ),주관영 ( Ju Gwan Yeong ) 대한산부인과학회 2003 Obstetrics & Gynecology Science Vol.46 No.8
The increasing use of the laparoscopic surgery in the management of gynecologic disease resulted in an increasing incidence of complication and the development of new complications. Incisional hernia through laparoscopic trocar site is an unusual complica
Ju Hui Choe,Hack Youn Kim,Yun Sang Choi,Doo Jeong Han,Ji Hun Choi,Yong Jae Kim,Cheon Jei Kim 한국축산식품학회 2011 한국축산식품학회지 Vol.31 No.6
This study was conducted to evaluate the antioxidant effects of pumpkin leaf extracted using a 50% ethanol on ground pork during storage. The pumpkin leaf extracts were added at concentrations of 0.05 (PE-0.05), 0.1 (PE-0.1), and 0.2% (PE- 0.2) to ground pork, and 0.05% of ascorbic acid (As-0.05) was added as a control. Each sample was collected after 1, 4, 7, and 10 d of storage and the pH, total viable counts (TVC), conjugated dienes (CD), free fatty acids (FFA), and thiobarbituric reaction substance (TBARS) values were measured. The pH of the pork samples decreased until day 7, and then increased thereafter, except for the control and PE-0.05 sample. Lower CIE a* values were observed for pork samples containing PE relative to As-0.05 at increasing storage time (p
A case of osteochondroma masquerading as viral wart
( Ju Yeon Choi ),( Jae Yun ),( Lim ),( Han Saem Kim ),( Jung In Kim ),( Jung Min ),( Hyun Min Seo ),( Sang Hyeon Hwang ),( Ho Joo Jung ),( Jae Hui Nam ),( Ga Young Lee ),( Won Serk Kim ) 대한피부과학회 2015 대한피부과학회 학술발표대회집 Vol.67 No.1
Osteochondroma is one of the most common benign bone tumors. It is easy for dermatologists to misdiagnose osteochondroma on the fingers or toes as other cutaneous tumors including pilomatricoma, epidermal cyst, and glomus tumor. We report a case of a 42-year-old woman presenting with a palpable mass on the left thumb. Skin biopsy was performed in the other hospital a year ago and she heard the result as a viral wart. In our hospital, the tumor was checked by X-ray, which showed a calcified nodule on the distal phalanx. Bizarre parosteal osteochondromatosis proliferation was suspected on MRI but bony connection between a bony spur and the distal phalanx was obscure. We additionally performed a computed tomography, which revealed a 5mm-sized bony spur connected with cortical bone. Specimen after orthopedic surgery showed fibrous tissue and cartilage cap composed of hyaline cartilage. Based on these findings, we concluded her tumor is an osteochondroma masquerading as viral wart.
A case of granular cell tumor on the tongue
( Ju Yeon Choi ),( Jae Yun Lim ),( Han Saem Kim ),( Jung In Kim ),( Jung Min ),( Hyun Min Seo ),( Sang Hyeon Hwang ),( Ho Joo Jung ),( Jae Hui Nam ),( Ga Young Lee ),( Won Serk Kim ) 대한피부과학회 2015 대한피부과학회 학술발표대회집 Vol.67 No.1
Granular cell tumors (GCTs) are rare and mostly benign neoplasms. They are commonly seen in the skin, tongue, breasts, and larynx. Histogenesis of GCT is uncertain, but they are reported to be neural crest origin. A 65-year-old woman presented with an asymptomatic and well-demarcated skin-colored mass on tongue. About 10 years ago, the mass developed and has gradually grown. Physical examination showed the presence of a non-tender, firm, 1 X 1cm sized dome shaped nodule. Histopathologic examination revealed an ill-defined dermal nodule composed of large cells with abundant eosinophilic granular cytoplasm. The overlying squamous epithelium showedpseudoepitheliomatous hyperplasia. Immunohistochemical stain revealed positivity for S-100 protein. Based on these findings, we diagnosed this neoplasm as GCT on the tongue.
A case of oral manifestation of cutaneous lupus erythematosus treated by alitretinoin
( Ju Yeon Choi ),( Jung Yup Kim ),( Sun Min Lim ),( Jae Yun Lim ),( Han Saem Kim ),( Jung In Kim ),( Jung Min ),( Joon Hong Min ),( Young Jun Choi ),( Jae Hui Nam ),( Won Serk Kim ),( Ga Young Lee ) 대한피부과학회 2016 대한피부과학회 학술발표대회집 Vol.68 No.1
Lupus erythematosus is an autoimmune disease with a broad spectrum of skin and multisystemic manifestations. Cutaneous lupus erythematosus (CLE) is referred to the lesions restricted to skin and/or mucous membranes. The prevalence of oral involvement ranges from 9 to 45% in patients with systemic lupus erythematosus and from 3 to 25% in patients with chronic cutaneous involvement. Thus far, antimalarial drugs, dapsone, and retinoids are considered as the first- and second-line treatment medicine in the treatment of CLE. In case of treatment failure or intolerance by the above drugs, vitamin A derivative, alitretinoin was reported as an effective alternative treatment option. We report a case of a 63-year-old woman presenting erythematous eroded plaques on the right buccal mucosa. She was diagnosed as CLE after punch biopsy and received alitretinoin (30 mg daily for 2 days and 10 mg daily for 4 weeks). For 1 month, the patient showed continuous improvement of buccal lesions and finally, the lesions were nearly cleared. She experienced headache and vomiting when she took alitretinoin 30 mg at the first time and those symptoms were disappeared after the dose reduction of alitretinoin. There was no other adverse effect. Herein, we report a case of oral manifestation of CLE treated by alitretinoin and suggest that alitretinoin could be an effective treatment option for CLE.