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김형준,이우미,안선호,송주흥,김재민,김성완,이상열,Kim, Hyoung-Jun,Lee, Woo-Mi,Ahn, Seon-Ho,Song, Ju-Heung,Kim, Jae-Min,Kim, Sung-Wan,Lee, Sang-Yeol 대한불안의학회 2006 대한불안의학회지 Vol.2 No.2
Objective : In this study, we investigated the prevalence of depression and its impact on the healthrelated Quality of life (HRQoL) of the patients with End-Stage Renal Disease (ESRD) on Hemodialysis. Method : The Quality of life (QOL) of patients was evaluated by HRQoL Questionnaire, "Medical Outcome Survey 36-Item Short Form Health Survey Korean Version (SF-36-K)". The patients on Hemodialysis in ESRD, were chosen from the hemodialytic room at Wonkwang University and Jeongeup-Asan Hospital. The number of patients was 95 (64 from Wonkwang University Hospital and 31 from Jeongeup-Asan Hospital) and all of them were above 19 years old. We performed various investigations to find a statistical correlations between HRQoL and physical & psychosocial factors such as the demographic characteristics, clinical characteristics (hemoglobin level and albumin level etc), and the score of Beck's depressive inventory (BDI). Results : The HRQoL value of patients on hemodialysis in ESRD is far poorer than the HRQoL reference value of Koreans and Americans, who are in normal healthly. The prevalence of depressive symptoms by BDI of the ESRD patients on hemodialysis is 68.6%, and age and depression have negative correlations with HRQoL of the patients. However, education level, serum albumin level, and social support have positive correlations with HRQoL. The patient group with depression has significantly poorer HRQoL than the group without depression. Conclusion : The HRQoL of ESRD patients on hemodialysis is not good in both physical and mental aspects. The prevalence of depression is very high and depression has negative impact of HRQoL of patients. Based on our study, it is essential to accompany with therapeutic Strategy to improve the HRQoL of ESRD patients on hemodialysis.
이민기와 플루오렌기를 주쇄에 함유하는 고분자의 광기전 성질
김형준,이정효,곽찬규,진성호,이택승,Kim, Hyung-Jun,Lee, Jung-Hyo,Kwak, Chan-Kyu,Jin, Sung-Ho,Lee, Taek-Seung 한국섬유공학회 2008 한국섬유공학회지 Vol.45 No.1
New polyimine derivative containing fluorene group in the main chain was synthesized via Suzuki cross-coupling polymerization, reduction, and imine formation reaction, consecutively. The synthesized polymer was characterized and explored as organic photovoltaic cell device. The imine polymer P3 in diluted chloroform solution emitted red light (582 nm), whereas its precursor polymers P1 and P2 showed green (about 530 nm) and blue fluorescence (477 nm), respectively. Bulk heterojunction photovoltaic cells fabricated by blending P3 with the fullerene derivative PCBM was found to have a power conversion efficiency of upto 0.0005%, while cells from blending P3 with MEH-PPV yielded 0.0008% of power conversion efficiency.
지역정체성 확립요인과 지역이미지 제고와의 관련성 연구 -'2016 가야체험축제'를 중심으로-
김형준,Kim, Hyung-Jun 대한안전경영과학회 2017 대한안전경영과학회지 Vol.19 No.2
The purpose of this study is to consider the relation between the deciding factors of local identity and local image improvement. To achieve this purpose, the deciding factors of local identity have been set as the following four: historical identity, cultural identity, (nature) scenery identity, and industrial identity. The writer has established a model to represent the relation between these factors and the local image improvement, namely 'Visitor Satisfaction' and 'Revisit Intentions', and framed a hypothesis for empirical verification. The study results are as follows: First, the deciding factors of local identity which this study addressed are empirically proven to have a significant effect on the visitor satisfaction and the intention to revisit in which is it likely that the greater the impact of the deciding factors, the higher the visitor satisfaction and revisit intentions would be. Second, the deciding factors of local identity, it appears that the 'historical identity' factor had the largest impact on the visitor satisfaction, and the 'cultural identity' factor had the largest impact on the revisit intentions. Therefore, of the four deciding factors, the 'historical identity' should be considered the highest priority to increase the visitor satisfaction, and the 'cultural identity' should be considered the highest priority to increase the revisit intentions. Third, based on the verification of the relation between the visitor satisfaction and revisit intentions, it can be presumed that the greater the visitor satisfaction, the higher the revisit intentions would be.
김형준,이근택,Kim, Hyeong Jun,Lee, Keun Taik The Korean Society of Food Hygiene and Safety 2018 한국식품위생안전성학회지 Vol.33 No.4
현재 국내 용기포장재 안전성 평가를 위한 용출시험에서 액체 시뮬란트를 사용하는 경우 실제와 다른 이행량 결과를 나타내는 상황과 고온가열 및 건조식품용 포장재, 그리고 종이 판지의 경우 액체 시뮬란트를 사용할 수 없는 문제점들을 감안한다면 유럽연합과 같이 고체건조 시뮬란트의 도입이 필수불가결해 보인다. $Tenax^{(R)}$를 건조식품용 시뮬란트로 사용하여 얻어진 실험 결과치가 실제 식품에서보다 높을 경우 $Tenax^{(R)}$에 대한 기준치를 설정하여 안전성 평가 여부를 판단할 수 있을 것이라는 전제가 성립한다. 지금까지 많은 연구결과들이 이러한 전제를 입증하고 있다. 그러나, 아직까지도 $Tenax^{(R)}$를 이용한 실험 방법이 완전하게 틀을 잡고 있지 못하다고 판단된다. 이는 $Tenax^{(R)}$로 포집되어 측정되는 물질의 물리화학적 특성들이 매우 다양할 수 있는데, 이를 포장재로부터 또는 이행된 식품으로부터 추출분석하기 위한 용매, 추출방법, 추출시간, 오염표준물질들의 종류에 따른 추출 및 분석 방법, $Tenax^{(R)}$의 상태에 따른 분석 재현성 등에 대한 자료들이 부족한 것이 사실이다. 국내에서 유통되는 다양한 식품종류를 감안한다면 $Tenax^{(R)}$를 국내 식품포장재의 안전성 평가를 위한 고체건조 시뮬란트로 공식적으로 도입하기 위해서는 추가 연구들이 필요할 것으로 판단된다. Currently, in Korea, a dry food simulant has not been designated for the migration testing of paper and board, food contact materials (FCMs) being used in dry foods, and foods heated at ultra-high temperature. Considering the diverse usage of FCMs, in order to secure reliable and confident safety evaluation and to overcome the non-trade barrier tariff in worldwide trade, migration testing methods of what should be more clearly defined for securing and overcoming. This article delves into the available literature on the use of $Tenax^{(R)}$ as a simulant for dry foods as well as its suitability and limitations, and examines the feasibility of its introduction into Korean FCMs regulation. Most experimental studies using $Tenax^{(R)}$ showed overestimated migration values when used in real foods, which reflects the potential of $Tenax^{(R)}$ as a dry food simulant in a worst-case scenario. However, more studies are required to optimize migration testing using $Tenax^{(R)}$ by standardizing the solvent type and the extraction method for surrogates of various FCMs and foods, and to resolve the potential drawbacks in the use of $Tenax^{(R)}$.