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조철호(Chul-Ho Cho),고용준(Yong-Joon Ko),안유민(Yoomin Ahn),이성환(Sung-Hwan Lee),조남규(Nahmgyoo Cho),맹준호(Joon-Ho Maeng),이병철(Byung-Chul Lee),황승용(Seung-Yong Hwang) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.5
Immunoassay is a method for clinical diagnoses and biochemical studies with antibody-antigen reaction. However, immunoassay takes a lot of time and expensive reagents. In this research, we report a microbiochip which can detect the electric signal from biochemical reaction with high sensitivity and low sample volume using micro bead. Gold electrode was fabricated on glass substrate using conventional MEMS technology for detecting the electric signal.
독거노인의 도구적 일상생활수행능력이자기방임에 미치는 영향에 대한 사회적 지지의 조절효과
정희성(Jeong, Hee-Seong),맹준호(Maeng, Joon-Ho) 한국통합사례관리학회 2020 한국케어매니지먼트연구 Vol.0 No.34
본 연구의 목적은 독거노인의 도구적 일상생활수행능력이 자기방임에 미치는 영향을 실증적으로 분석하고 사회적 지지가 가지는 조절효과를 검증하여 노년기의 자기방임을 완화하기 위한 실천적 함의를 도출하는데 있다. 이를 위해 대전광역시 노인돌봄기본서비스를 이용하는 만 65세 이상 독거노인을 모집단으로 하여 설문조사를 실시하였고, 수집된 406명의 자료 중, 366명의 자료를 활용하여 분석하였다. 자료 분석은 인구학적 특성과 주요 변인에 대한 집단비교를 위해 t-test, ANOVA를 실시하였고, 위계적 회귀분석을 통해 도구적 일상생활수행능력과 자기방임 간의 관계에서 사회적 지지의 조절효과를 검증하였다. 연구 결과, 주관적 건강상태가 좋지 않을수록, 도구적 일상생활수행능력, 정서적 지지, 물질적 지지의 수준이 낮을수록 자기방임 정도가 높은 것으로 나타났다. 또한, 도구적 일상생활수행능력과 자기방임의 관계에서는 사회적 지지 중, 정서적 지지만이 조절효과가 있는 것으로 나타났다. 본 연구 결과를 바탕으로 독거노인의 신체적 건강상태 유지 및 증진과 일상생활 기능상의 어려움을 안고 있는 노인에 대한 정서적 지지의 강화 등 자기방임 완화를 위한 실천적 함의를 제시하였다. The purpose of this study is to analyze the effects of IADL on self-neglect in elders who live alone positively and verify the moderating effects of social support and then draw practical implications to reduce self-neglect in old age. To address the goal, this study selected elderly people living alone who were older than 65 and using Basic Care Service in Daejeon for the elderly as target to conduct a survey, and out of data collected from 406 subjects, those from 366 were utilized for analysis. For data analysis, demographic characteristics were analyzed, and for inter-group comparison about major variables, the t-test and ANOVA were done. Through hierarchical regression analysis, the regulating effects of social support were verified in correlation between IADL and self-neglect. According to the study results, as their subjective health condition is worse and the levels of their IADL, emotional support, and material support are lower, the degree of self-neglect becomes higher. Also, in correlation between IADL and self-neglect, among the variables of social support, only emotional support indicates moderating effects. Based on the results, this researcher suggests practical implications to reduce self-neglect, for instance, to maintain and improve physical health conditions in elderly people living alone or to increase emotional support for the elderly having difficulty in IADL.
독거노인의 위기적 생활사건 스트레스가 자기방임에 미치는 영향: 자아통제감의 매개효과 검증
정희성(Jeong, Hee-Seong),맹준호(Maeng, Joon-Ho) 한국노인복지학회 2020 노인복지연구 Vol.75 No.3
본 연구는 독거노인의 자기방임을 예방하기 위한 기초연구로, 위기적 생활사건 스트레스가 자기방임에 미치는 영향과 자아통제감의 매개효과를 실증적으로 검증하였다. 대전광역시에서 노인돌봄기본서비스를 이용하는 65세 이상 독거노인을 대상으로 면접조사를 실시하였고, 370명에 대한 자료를 분석에 활용하였다. 구조방정식모델을 통한 분석 결과, 본 연구에서 제시한 모형의 적합도가 CFI=.965, RMSEA=.051로 양호한 적합성을 나타냈다. 이를 통해 자아통제감이 낮을수록(β=-.372, p<.001), 위기적 생활사건 스트레스가 높을수록(β=.188, p<.05), 자기방임 정도가 높게 나타났다. 또한 매개효과 검증에서 노인의 자아통제감이 위기적 생활사건 스트레스와 자기방임을 매개하는 것으로 확인되었다. 연구 결과를 바탕으로 독거노인의 자기방임 현상을 해소하기 위해 자기방임에 대한 인식개선, 실천 전문가를 대상으로 한 교육, 예방적 시스템의 구축 및 보완에 대한 실천적 방안을 제시하였다. The study is to prevent self-neglect of the elderly living alone. For this reason, it verified empirically the influence of stress of critical life events on self-neglect and the mediating effects of a sense of mastery. For this, survey were conducted on the elderly living alone who are over 65 years old and using basic elderly care services in Daejon City and data from 370 people used for analysis. analysis conducted through structural equations model showed that the goodness of fit of the model presented in this study was favorable with CFI=.965 and RMSEA=.051. So, one hwo has a low sense of mastery (β=-.372, p<.001) or a higher stress of critical life events (β=.188, p<.05) caused much higher levels of self-neglect. In addition, the sense of mastery of the elderly mediated between stress of critical life events and self-neglect. Based on the results of this study, practical alternatives were presented for awareness improvements on self-neglect, education for practical experts, and the establishment and supplementation of preventive systems to relieve the self-neglect phenomena of the elderly living alone.
뱀장어 배양 간세포에서의 Cytochrome P4501A (CYP1A) 유전자 발현에 대한 중금속들의 억제효과
권혁추 ( Hyuk Chu Kwon ),맹준호 ( Joon Ho Maeng ),최성희 ( Seong Hee Choi ) 한국어병학회 2010 한국어병학회지 Vol.23 No.2
Effects of heavy metal ions on the gene expression of cytochrome P4501A (CYP1A) were examined in cultured eel hepatocytes. When the expression of CYP1A mRNA was measured by RT-PCR after incubation of eel hepatocytes with benzo[α]pyrene (B[α]P) at concentrations of 10-8∼10-5 M, the CYP1A expression increased with B[α]P treatment in a dose dependent manner, showing significant increase at concentrations more than 10-7 M. When the eel hepatocyte was treated with cadmium (10-6 and 10-5 M), the expression of CYP1A was inhibited and especially at higher concentration (10-5 M). The inhibition of CYP1A expression by cadmium was also observed in cells treated with B[α]P. In another study, effects of heavy metal ions on the expression of CYP1A were examined in cultured hepatocytes isolated from eel which was treated previously with B[α]P in vivo. Hepatocytes isolated from the liver of eel taken at 48 hours after injection of B[α]P (10 mg/kg) were cultured for 2 days with cadmium, copper, lead or zinc (10-6 and 10-5 M). The expression of CYP1A was found to be suppressed by the metal ions compared with the control in which CYP1A was induced with previous treatment of B[α]P in vivo. The present results may provide an important basic information for studying the effects of heavy metal ions on CYP1A expression in other species of fish and studying toxicological mechanisms of heavy metal ions in aquatic livings.
핫엠보싱 및 폴리에틸렌 글라이콜 매개 본딩을 이용한 나노채널의 저비용 신속 제작 공정
한상희(Sang-Hee Han),맹준호(Joon-Ho Maeng),박준홍(Jun-Hong Park),신현준(Hyun-Joon Shin),이상엽(Sang-Youp Lee) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.12
We demonstrated an extremely easy and cost-effective nanochnnel fabrication method based on hot embossing process and polyethylene glycol (PEG) mediated bonding method. Master mold for hot embossing process was fabricated on silicon wafer using negative electron beam lithography and reactive ion etching process. Nanogroove array were patterned in a small piece of poly(methyl methacrylate) (PMMA) plate using hot embossing process and were covered by bonding with 170um thick microscope coverslip. Before nanogrooves were sealed with coverslip, nanopatterned PMMA plate was coated with monolayer of polyethylene glycol and exposed to oxygen plasma. Hot embossing conditions such as force, temperature, and pressing time were optimized at 0.92N, 125±2°C and 30 min. Using our method, nanochannels of four different dimensions (200(h) × 400(w), 200(h) × 200(w), 100(h) × 100(w), 100(h) × 70(w)) were fabricated and the dimension of each nanochannel was examined using atomic force microscopy. Also PEG mediated bonding showed excellent water tight performance.