• Hwankyungkyoyuk
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• v.13 no.2
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• pp.114-126
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• 2000

The purpose of this study is to identify the theory of inquiry and to suggest an example of teaching/learning strategy through inquiry for effective environmental education. This study was based on the review of literature in the area of background of inquiry, inquiry in school subjects-social science, science, and environment and activities for inquiry. The teaching/learning strategy which was developed in this study included several inquiry activities focusing on recent social issue. And it can be used in environmental class.

• Mycobiology
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• v.39 no.2
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• pp.125-128
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• 2011

Enzyme activities of Cenococcum geophilum isolates were examined on enzyme- specific solid media. Deoxyribonuclease, phosphatase, and urease were detected in all isolates, whereas cellulase was not detected in any of the isolates. Variations in enzyme activities of amylase, caseinolysis, gelatinase, lipase, and ribonuclease were observed among isolates.

• Management & Information Systems Review
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• v.39 no.1
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• pp.59-74
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• 2020

The purpose of this study was to examine how consumers think about the company's sustainability management activities and whether the company's perceived sustainability activities affect corporate trust and purchase intention. The results of the verification of the research hypothesis to be verified in this study are as follows. First, it was confirmed that corporate sustainability management is specifically classified into economic, social and environmental activities. Second, it was confirmed that corporate sustainability management activities have a positive effect on the corporate trust perceived by consumers. Specific influence relationships are as follows. Firm economic activity does not have a significant effect on corporate credibility, but social and environmental activities have a positive effect on corporate credibility. Third, it was confirmed that the company's sustainability management activities had a significant effect on consumer's purchase intention. Specific influence relationships are as follows. While economic and social activities of firms have a positive effect on consumers' purchase intentions, environmental activities have not been shown to have a significant impact. Fourth, it was confirmed that corporate trust perceived by consumers had a positive effect on purchase intention. It is judged that the results of this analysis are presented to corporate managers. In the process of establishing a company's management strategy, it is to confirm that the efforts of sustainable management activities are activities that substantially help the company's stable growth and development.

• Journal of Environmental Science International
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• v.31 no.11
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• pp.959-965
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• 2022

Through psychological evaluation, this study attempted to verify the effect of quality of life improvements from gardening activities in apartment landscaping spaces. The study was conducted on 32 mothers raising children. Psychological valuation was conducted using world Health Organization Quality of Life questionnaire(WHOQOL-Bref), the Satisfaction with Life Scale(SWLS), the Life Satisfaction Experience Scale(LSES), and the Symptom Checklist-90-Revised(SCL-90-R). The psychological analysis results showed that, engaging in gardening activities for two weeks had, a positive effect on mothers' environmental of quality of life evaluation. The LSES indicates that satisfaction with oneself significantly increased after starting the gardening activities. The activity resulted in a positive change in attitude toward life. The SCL-90-R results showed changes in the mother's psychological state. There was a significant amelioration of obesessive-compulsive behaviors, hostility, and phobic anxiety. In conclusion, this study was found that, for mothers in apartments, outdoor gardening activities can significantly affect their quality of life. Moreover, it can help prevent mental health deterioration, Further study should be conducted on the beneficial effects of gardening on the variety of age groups and activities.

• Environmental Mutagens and Carcinogens
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• v.21 no.2
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• pp.67-71
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• 2001

Effects of exposure to a neurotoxicant, fenitrothion on antioxidant enzyme activities in Chironomus riparius Mg. (Diptera, Chironomidae) larvae were evaluated under laboratory conditions. Exposure to this chemical led to an increase of cupper, zinc type superoxide dismutase and manganese type superoxide dismutase activities and to a decrease of glutathion peroxidase activity. An activation of catalase was observed in the larvae exposed to high fenitrothion concentration. The response of superoxide dismutase was rapid and sensitive to low chemical concentrations, but changes in catalase, total peroxidase and glutathion peroxidase were less sensitive. In this study, antioxidant enzyme activities in Chironomus riparius larvae were identified as pertinent biomarkers for environmental monitoring.

• Journal of Microbiology and Biotechnology
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• v.9 no.6
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• pp.877-880
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• 1999

Over 50 morphologically distinctive soil Streptomyces were isolated from various Jocations in the Yongin area in Korea and visually screened for dye-decoloring activities on an agar plate. Two Streptomyces species (AD001 and ND002) showed strong dye-decoloring activities on the plate containing congo-red and new-fuchin dyes, respectively. Also, the liquid culture supernatants of these species showed 2,4-dicholophenol (DCP) oxidation activities only in the presence of hydrogen peroxide, a characteristic of Actinomycetes lignin-peroxidase (ALiP)-P3 isoform found in dye-degrading S. viridosporus T7A and S. badius 252. Based on their dye-decoloring capabilities and the 2,4-DCP oxidation kinetic data, it is suggested that these Streptomyces secrete not-yet-characterized extracelluar enzyme(s), whose activities are very similar to the ALiP-P3 enzyme.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.12
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• pp.264-275
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• 2017

Objective: This study examines the effects of children's art activities through forest experience in relation with Nuri curriculum on environmental sensitivity. Method: A survey was administered to an experimental group of 20 children as well as a control group of 20 children for statistical analysis. after 16-class art activities through forest experience were performed to children aged 4 at a daycare center for 50 days. Result: Children's art activities through forest experience in relation with Nuri curriculum had a positive effect on their environmental sensitivity. In particular, their art activities had a positive effect on their self-awareness, self-regulation, empathy and motivation in the experimental group, supporting the educational effects and benefits of developmental children's art activities through forest experience in relation with Nuri curriculum. In other words, art activities through forest experience are useful in terms of providing children with creative expression activities in art by leading to observation and exploration, as well as educational experiences that have positive attitudes toward the environment. Conclusion: As children's art activities through forest experience have a positive effect on their environmental sensitivity, more useful information on teaching-learning methods will be able to be provided to early childhood teachers in the field. Consequently, children's art activities through forest experience need to be actively introduced in the field of early childhood education as an alternative for learning nature and improving environment-friendly emotional intelligence.

• Korean Journal of Environmental Agriculture
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• v.29 no.1
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• pp.39-46
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• 2010

Environmental-friendly agriculture (EFA) is defined as the cultivation of crops with reduced amounts or without chemical-synthetic pesticides. Recently, the use of chemical pesticides has decreased significantly; therefore, we cultivated peppers following EFA- and conventional methods and compared their antioxidant activities. To accomplish this, the environmental-friendly cultivated peppers (EFPE) and conventionally cultivated peppers (CCPE) were extracted with 70% methanol and the effects of the extracts on the cell viability, intracellular ROS generation, lipid peroxidation and catalase activity of HepG2 cells were evaluated. EFPE showed a stronger protective effect against oxidative stress induced-cell death than that of CCPE. EFPE also reduced intracellular ROS generation (42.7% to 26.4%) following treatment with hydrogen peroxide more effectively than that of CCPE (24.2% to 6.3%). Furthermore, EFPE and CCPE showed protective effects against lipid peroxidation and induced catalase activity, although these effects were not statistically significant. Taken together, these results suggest that EFPE showed stronger antioxidant activities than CCPE, and thus represent evidence that EFA with biocontrol materials may improve the functional properties of crops and/or secondary metabolites with antioxidant activities when compared with conventional agricultural practices.

• Hwankyungkyoyuk
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• v.13 no.1
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• pp.96-110
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• 2000

There are some considerations that must take into account in environmental education in the aspect of the difference of value clarification between ecological and economic viewpoint on environment. Although we have a tendency to think that the differences are unavoidable because we are on the economy-oriented life, we should realize that such emphasis to economics comes from the differences between ecological and economic view point on environment. We have lived and thought on the basis of Economic view point, especially, environmental policies are established on the basis of economic efficiency. But this tendency has become great obstacles to environmental ethics education because it dilutes the reason of natural preservation and removes the fundamental reasons why the nature should be preserved. Therefore it is very difficult to balance the value clarification between economic and ecological viewpoint in actual life. Furthermore, environmental problems can not be solved only through economic approach, because of their limits to belief solving from providing incentives. It is very important to make people have a way of thinking which economic activities and debates can be made on the ecological resources. Therefore we can compare this relation to CHAE-YONG founded on Buddism and Chinese philosophy. CHAE means essence of every reaction in the cosmos, and YONG means the reaction itself. CHAE is regarded to ecological resources, and YONG is thought to every-day economic activities. YONG is not able to existwithout CHAE. If economic activities can be done on the basic limit of ecological resources, we can build suitable environment to living condition. We call this appropriate environment as SANG. In other words, the connection of CHAE-YONG-SANG means ecological resources - economic activities - sustainable environment. It is realized that the relations between economics and ecology should be equalized for the balanced environmental ethics education. This study tries to get out of unbalanced relations between economics and ecology from the persepectives of CHAE-YONG-SANG and it was done to suggest an alternative environmental ethics education program

• Journal of Environmental Science International
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• v.31 no.8
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• pp.715-725
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• 2022

Lactic Acid Bacteria (LAB) are among the representative probiotics that have been used for a long time in fermented food. Although there are many studies on detecting the radical scavenging activity of LAB, few studies have been conducted on the environmental factors that improve scavenging activity. This study investigated the environmental factors affecting the DPPH radical scavenging and various antioxidant activities of Kimchi-derived Lactobacillus plantarum K-21 with antihypertensive and radical scavenging activities. The optimal conditions for scavenging DPPH radicals were glucose 2%, bactopeptone 0.5%, Tween 80 0.05%, L-cysteine 0.05%, and an initial pH 6.5 at 35℃. Under optimal conditions, the DPPH radical scavenging activity was 94.8±2.2%, which was 1.5 times higher than that of the basic medium. In addition, L. plantarum K-21 had other antioxidant activities; ABTS radical scavenging (93.6±1.5%), hydroxyl radical scavenging (8.5±0.9%), metal chelating (65.9±0.5%), NO scavenging (53.1±19%), SOD-like (25.1±1.5%), and reducing power (11.7±1.4%) activities were detected. Therefore, L. plantarum K-21 may act not only as a starter for lactic acid-fermented foods with improved functionality but also as a drug for various diseases caused by oxidative stress.