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Chu, Ji-Hyeon,Joo, Sung-Jun,Kim, Hak-Sung Elsevier 2019 THIN SOLID FILMS - Vol.680 No.-
<P><B>Abstract</B></P> <P>In this work, the printing and sintering characteristics of pattern area and via-hole section were investigated. To analyze the printing characteristics depending on the rheology of ink, Cu micro/Ag nano-hybrid inks (Cu/Ag hybrid inks) were prepared by varying the amount of epoxy, and the fabricated inks were printed on via-hole formed substrates. The printed Cu/Ag hybrid ink films were subsequently sintered by an intense pulsed light (IPL) sintering method. Various IPL sintering parameters including irradiation energy and pulse number were employed to enhance the sintering characteristics of pattern area and via-hole section. The sintered Cu/Ag hybrid ink films were characterized using scanning electron microscopy and X-ray photoelectron spectroscopy. The detailed sintering mechanism of Cu/Ag hybrid ink inside the via-hole section was monitored in real-time by in situ resistance monitoring. As a result, the Cu/Ag hybrid ink with the optimal ratio of epoxy content (0.56 wt%) showed good printability of pattern area and via-hole section. In addition, the proposed multi-pulse IPL sintering conditions (irradiation energy: 7 J/cm<SUP>2</SUP>, pulse duration: 1 ms, off-time: 9 ms, pulse number: 20) exhibited low resistivity (pattern area: 5.12 μΩ cm, via-hole section: 7.79 μΩ cm) and a 5B adhesion strength level.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Cu micro/Ag nano-hybrid inks were printed and intense pulsed light (IPL) sintered. </LI> <LI> Ink contents were optimized for printing of pattern area and via-hole section. </LI> <LI> Multi-pulse IPL sintering was introduced to improve sintering characteristics. </LI> <LI> Optimally IPL sintered case exhibited superior sintering characteristics. </LI> </UL> </P>
Chu, Sang Hui,Baek, Ji Won,Kim, Eun Sook,Stefani, Katherine M.,Lee, Won Joon,Park, Yeong-Ran,Youm, Yoosik,Kim, Hyeon Chang The Korean Society for Preventive Medicine 2015 Journal of Preventive Medicine and Public Health Vol.48 No.1
Objectives: Controlling blood pressure is a key step in reducing cardiovascular mortality in older adults. Gender differences in patients' attitudes after disease diagnosis and their management of the disease have been identified. However, it is unclear whether gender differences exist in hypertension management among older adults. We hypothesized that gender differences would exist among factors associated with hypertension diagnosis and control among community-dwelling, older adults. Methods: This cross-sectional study analyzed data from 653 Koreans aged ${\geq}60years$ who participated in the Korean Social Life, Health, and Aging Project. Multiple logistic regression was used to compare several variables between undiagnosed and diagnosed hypertension, and between uncontrolled and controlled hypertension. Results: Diabetes was more prevalent in men and women who had uncontrolled hypertension than those with controlled hypertension or undiagnosed hypertension. High body mass index was significantly associated with uncontrolled hypertension only in men. Multiple logistic regression analysis indicated that in women, awareness of one's blood pressure level (odds ratio [OR], 2.86; p=0.003) and the number of blood pressure checkups over the previous year (OR, 1.06; p=0.011) might influence the likelihood of being diagnosed with hypertension. More highly educated women were more likely to have controlled hypertension than non-educated women (OR, 5.23; p=0.013). Conclusions: This study suggests that gender differences exist among factors associated with hypertension diagnosis and control in the study population of community-dwelling, older adults. Education-based health promotion strategies for hypertension control might be more effective in elderly women than in elderly men. Gender-specific approaches may be required to effectively control hypertension among older adults.
Hyeon-gi Hong(홍현기),Hee-song Kim(김희송),Jung-eun Lee(이정은),Sue-hyun Jung(정수현),Hyung-ki Ji(지형기),Ki-pyoung Kim(김기평),Chu-yun Pyo(표주연),Jong-han Kim(김종한),Myoung-Ho Hyun(현명호) 대한스트레스학회 2017 스트레스硏究 Vol.25 No.2
본 연구는 대학생의 자기 주장성과 폭음 수준이 성폭력 피해를 예측하는지 알아보았고, 폭음 수준이 자기 주장성과 성폭력 피해 여부 간에 조절 역할을 하는지 탐색해 보았다. 대학생 405명이 연구에 참여하였고 익명성 보장을 위해 모바일 기반 설문 응답을 사용하였다. 설문지에 응답하지 않은 12명의 참여자를 제외한 393명(남: 161명, 여: 232명)의 자료를 분석하였다. 로지스틱 회귀분석을 통하여 자기주장성, 폭음 수준, 자기 주장성과 폭음의 상호작용을 예측 변인으로, 성폭력 피해여부를 기준 변인으로 설정하여 분석하였다. 분석 결과 자기 주장성과 폭음 수준이 성폭력 피해 확률을 유의하게 예측하는 것으로 나타났다. 즉, 자기 주장성 수준이 낮을수록, 폭음 수준이 높을수록 성폭력 피해 확률이 유의함을 나타냈다. 또한 자기 주장성과 폭음의 상호작용이 성폭력 피해 확률을 유의하게 예측하였다. 상호작용에 대한 단순 주 효과 분석을 실시한 결과 폭음 수준이 낮은 집단의 경우 자기 주장성이 성폭력 피해 확률을 유의하게 예측한 반면, 폭음 수준이 높은 집단의 경우 자기 주장성이 성폭력 피해 확률을 유의하게 예측하지 않는 것으로 나타났다. 이러한 결과를 통하여 대학생의 성폭력 피해 예방을 위한 프로그램 적용 시 자기 주장성 훈련만이 아니라 건전한 음주 교육이 병행되어야 할 것을 제안하였다. Backgound: The present study was designed to investigate the moderating role of binge drinking on the relationship between self-assertiveness and sexual victimization among college students (N=393, male: 161, female: 232). We hypothesized that the relationship between self-assertiveness and sexual victimization is meaningful only when binge drinking is low, not high. Methods: Using an online site, participants filled out a packet of questionnaires for demographic information, their amount of unwanted sexual contact experience, and their rate of alcohol consumption. Results: In the result, binge drinking moderated the relationship between self-assertiveness and sexual victimization. For the high binge drinker group, high self-assertiveness was not a statistically significant predictor of sexual victimization. Conclusions: Although self-assertiveness is known to be a protective factor against sexual victimization, our results imply that self-assertiveness alone is not enough to lower sexual victimization. Binge drinking and self-assertiveness are considered together in sexual violence prevention programs.
Rupture of hepatocellular carcinoma after transcatheter arterial chemoembolization: A case report
Hye Hyeon Moon,Hee Ho Chu,Ji Hoon Shin 소화기인터벤션의학회 2021 Gastrointestinal Intervention Vol.10 No.1
Transcatheter arterial chemoembolization (TACE) is one of the most common treatment options for patients with unresectable hepatocellular carcinoma (HCC). HCC rupture following TACE is a rare but potentially life-threatening complication. This report described a patient who experienced HCC rupture after TACE. The patient was successfully managed by transarterial embolization and staged liver resection. Large tumor size, superficial tumor location, exophytic growth of the tumor, and vascular lakes during TACE may be predisposing risk factors for HCC rupture after TACE.