• Bulletin of the Korean Chemical Society
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• 제29권5호
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• pp.915-920
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• 2008

In this paper the electrochemical behaviors of hydroquinone ($H_2Q$) were investigated on a carbon paste electrode using room temperature ionic liquid N-butylpyridinium hexafluorophosphate ($BPPF_6$) as binder (ILCPE) and further applied to $H_2Q$ determination. In pH 2.5 phosphate buffer solution (PBS), the electrochemical response of H2Q was greatly improved on the IL-CPE with a pair of well-defined quasi-reversible redox peaks appeared, which was attributed to the electrocatalytic activity of IL-CPE to the $H_2Q$. The redox peak potentials were located at 0.340 V (Epa) and 0.240 V (Epc) (vs. the saturated calomel electrode, SCE), respectively. The formal potential ($E^0$') was calculated as 0.290 V and the peak-to-peak separation (${\Delta}E_p$) was 0.100 V. The electrochemical parameters of $H_2Q$ on the IL-CPE were further calculated by cyclic voltammetry. Under the selected conditions the anodic peak current was linear with $H_2Q$ concentration over the range from $5.0\;{{\times}}\;10^{-6}$ to $5.0\;{\times}\;10^{-3}\;mol\;L^{-1}$ with the detection limit as $2.5\;{\times}\;10^{-6}\;mol\;L^{-1}$ (3$\sigma$ ) by cyclic voltammetry. The proposed method was successful applied to determination of $H_2Q$ content in a synthetic wastewater sample without the interferences of commonly coexisting substances.

• Bulletin of the Korean Chemical Society
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• 제30권3호
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• pp.582-588
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• 2009

Direct electron transfer of hemoglobin (Hb) in the chitosan (CTS) and $TiO_2$ nanoparticles (nano-$TiO_2$) composite films was achieved by using a room temperature ionic liquid of 1-butyl-3-methylimidazolium hexafluorophosphate ($BMIMPF_6$) modified carbon paste electrode (CILE) as the basal electrode. UV-Vis and FT-IR spectroscopy indicated that Hb in the film retained the native structure. Electrochemical investigation indicated that a pair of well-defined quasi-reversible redox peaks of Hb heme Fe(III)/Fe(II) was obtained with the formal potential located at -0.340 V (νs. SCE) in pH 7.0 phosphate buffer solution (PBS). The electrochemical parameters such as the electron transfer coefficient (α), the electron transfer number (n) and the standard electron transfer rate constant ($k_s$) were got as 0.422, 0.93 and 0.117 $s^{-1}$, respectively. The fabricated CTS/nano-$TiO_2$/Hb/CILE showed good electrocatalytic ability to the reduction of trichloroacetic acid (TCA) and hydrogen peroxide ($H_2O_2$), which exhibited a potential application in fabricating a new kind of third generation biosensor.

• 한국식품영양학회지
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• 제36권4호
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• pp.222-235
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• 2023

In this research, we examined the shifts in determinants influencing the frequency of eco-friendly food purchases pre- and post-COVID-19. Our analysis utilized filtered 2019-2021 Consumption Behavior Survey data from the Korea Rural Economic Institute Food, excluding any irrational responses. Given the nature of the dependent variable, a multinomial logistic regression model was employed with demographic factors, variables pertaining to food consumption behavior, and variables concerning food consumption awareness as predictors. Following the onset of the COVID-19 pandemic, an individual's level of education was observed to positively influence the frequency of eco-friendly food purchases. In contrast, income level and fluctuations in food consumption expenditure did not appear to have a discernible impact on the purchasing frequency of such eco-friendly products. Irrespective of the advent of COVID-19, variables such as the frequency of online food purchases, the utilization of early morning delivery services, dining out frequency, and the intake of health-functional foods consistently demonstrated a positive correlation with the propensity to purchase eco-friendly foods. Overall, consumers prioritizing safety, quality, and nutrition over price, taste, and convenience in their procurement decisions for rice, vegetables, meat, and processed foods exhibit an increased inclination toward the acquisition of eco-friendly food products.

• 수산해양교육연구
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• 제27권2호
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• pp.566-575
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• 2015

The study aims to identify the generation and treatment of fishery by-products in Korea and suggests future directions and strategies for their eco-friendly utilization and industrialization. First, the study focuses on the identification of the generation and their treatment in Korea since merely few study were conducted and they did not provide enough information regarding the overall generation and treatment at the national level. According to the estimation, Korea generates 800 thousand to 1,200 thousand tones of fishery by-product every year. The fishery by-products generated at large seafood markets and processing facilities are used or processed as fish meal and feed, but those generated from households and small seafood restaurants are currently treated as food waste. In addition, inadequately treated fishery by-products cause various problems such as spoiling urban landscape, creating odor and incubating pest. After identifying the generation and treatment of fishery by-products, the study suggests directions for the formulation of infrastructure for transition into resource circulation society, minimization of dumped waste and their eco-friendly recycling as resources, diversification of recycled goods and development into a high-value added industry. Finally, the study suggests detailed strategies for the directions such as establishment of legal and institutional foundation, separation of fishery by-products from wastes, development of technology tailored for commercialization, introduction of pilot projects for industrialization and cultivation of social enterprises.

• 한국의상디자인학회지
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• 제18권4호
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• pp.1-15
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• 2016

The object of this study is to find out the influence of college students' consumption value on consumer attitudes towards environmental awareness and clothing environmental behavior. Questionnaires were administered to 236 college students living in DaeguCity and Kyoungbuk province. Frequency, factor analysis, reliability analysis, regression analysis, and t-test were used for data analysis. Our findings are as follows. Consumption value of college students had factors as differentiated, consumption needs, utility, economies ostentation, others awareness, and belonging. Consumer attitudes towards environmental awareness were found as environmental importance, environmental product purchase, environmental product interest, and environmental action. Clothing environmental behavior were found as up cycle, buying eco-friendly clothing, active participation, saver purchase, and eco-friendly clothing management. The result of this study showed differentiated, others awareness, and belonging had significant effect of environmental product purchase and consumption needs, utility, and belonging had significant effect of environmental action. Differentiated, and others awareness had significant effect of up cycle, buying eco-friendly clothing, active participation, and eco-friendly clothing management. Gender of college students showed significant differences consumption value, consumer attitudes towards environmental awareness, and clothing environmental behavior.

• 한국환경교육학회지:환경교육
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• 제25권2호
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• pp.242-253
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• 2012

This research aims to identify the effect of message design on university students' attitude toward the BIPV (Building Integrated Photovoltaic) and find out its educational availability and implications in environment education. For this purpose, we conducted a survey on questionnaires answered by 244 students of S university at lunch time in the school restaurant with the imaginary scenario that it is required to increase the food price due to photovoltaic-equipment. The students were divided into 9 groups and according to whether the eco-friendly message components are offered and the different rate of a rise in the foods' price. In order to look over various aspects of attitudes, the questionnaires are subdivided into 2 parts according to the classification of attitudes; the preference as an cognitive-affective attitude and the intention of visit as an behavioral attitudes. The results of this study are summarized as follows; (1) The eco-friendly message design has a significant effect on students' attitude. (2) If given explanation including information regarding eco-friendly facility and marking eco-friendly' adject, it has an positive influence on students' preference and intention of visit. (3) It is more effective to offer the information about the reason why the cost increase than just explain the eco-friendly characteristics of object as the message design strategy to attract student's positive attitude. (4) Although it is required to burden a certain scale of cost, students show higher preference and intention of visit if given the eco-friendly message design.

• 한국보육지원학회지
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• 제8권4호
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• pp.77-96
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• 2012

본 연구는 어린이집의 급 간식 관련 친환경 실천에 대해 어린이집의 원장, 보육교사, 취사부의 실천정도가 어떠하며, 어린이집과 보육교직원 변인에 따른 차이가 있는지 조사하는 것을 목적으로 하였다. 이를 위하여 연구자는 Boise(2010)의 친환경개념을 적용하여 급 간식의 친환경의 개념을 재 정의하여 보육교직원의 실천정도를 알아볼 수 있는 질문지를 개발하였으며, 서울과 경기지역 소재 어린이집 200개소에 근무하는 원장118명, 보육교사 363명, 취사부 102명 총 583명의 질문지 응답을 분석하였다. 연구결과 첫째, 어린이집의 급 간식 관련 친환경 실천정도는 안전성, 기능성, 지속가능성 세 영역의 모든 영역에서 취사부의 실천정도가 가장 높게 나타났고, 다음으로 원장, 보육교사 순으로 나타났다. 둘째, 보육교직원들의 급 간식 관련 친환경 실천정도는 어린이집의 유형, 규모, 직급에 따라 차이가 있었으나 보육교직원의 경력에 따른 차이는 없는 것으로 나타났다.

• 한국콘텐츠학회논문지
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• 제13권2호
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• pp.127-136
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• 2013

본 연구의 목적은 캔 아트 문화 사업화를 위해 필요한 성공요인을 계층분석 연구방법론을 활용하여 도출하고, 캔 아트 문화사업화의 블루오션 전략을 제시 하였다. 연구결과는 다음과 같다. 첫째, 가장 중요하다고 판단된 캔 아트의 문화사업화 성공요인은 Eco 상품화(0.227), 문화적 가치(0.223), 유통(0.217), 체험학습(0.202) 순으로 나타났다. 둘째, 캔 아트 산업이 성공하기 위해 중요한 세부 중요 요인은 Eco디자인(0.118), 재활용 인식개선(0.118), 교육적 가치 증대(0.117), Viral 마케팅(0.113), 정기적인 체험학습(0.105) 순으로 고려되었다. 그리고 본 연구시사점은 캔 아트를 블루오션으로서 창조해야 할 전략은 환경 공예교육으로 심화 시키고, Eco 상품화에 주력하는 것으로 제시하고 있다.

• 한국산림과학회지
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• 제109권3호
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• pp.341-349
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• 2020

본 연구는 2017년 8월 국립횡성숲체원에서 진행된 교원 산림교육 직무연수에 참가한 유치원 및 초·중·고등학교 교사 46명을 대상으로, 사전·사후 설문조사를 통해 프로그램의 효과성을 분석한 것이다. 연구결과, 직무연수 참여 전과 후에 교사들의 환경감수성과 자연친화적 교수태도, 교사효능감이 통계적으로 유의하게 상승하여, 프로그램의 긍정적인 효과를 확인할 수 있었다. 그러나 교사효능감과 관련해 교사의 자신감은 다소 줄어든 것으로 나타나, 교사들이 자신감을 가질 수 있는 실질적인 교수역량 개발을 위한 연수의 필요성이 확인되었다. 본 연구는 학교 현장에서 학생들의 환경감수성과 자연친화적 태도 발달에 중요한 영향을 미치는 교사들을 대상으로 산림교육의 효과성을 확인하고, 보다 효과적인 직무연수 프로그램을 개발하기 위한 시사점을 도출하였다는 데 의의가 있다.

• 한국재료학회지
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• 제18권6호
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• pp.313-317
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• 2008

[ $LaFeO_3$ ] powders were synthesized using a method involving solution combustion, and the surface properties of these powders were examined by x-ray photoelectron spectroscopy. As the amount of fuel increased during the synthesis, the $LaFeO_3$ powders became amorphous with a large plate-like shape. It was found that the O 1s spectra were composed of two types of photoelectrons by deconvolutioning the spectra. Photoelectrons with higher binding energy come from adsorbed oxygen ($O^-$) whereas those with lower energy come from lattice oxygen ($O^{2-}$). The ratio of adsorbed and lattice oxygen increased as the ratio of the fuel and nitrate (${\Phi}$) increased. The binding energy of both types of oxygen increased as ${\Phi}$ increased due to the formation of carbonates.