• 생약학회지
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• 제44권2호
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• pp.193-199
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• 2013

We investigated the antioxidative and antimicrobial activities of the methanol extracts from Korean folk plants (MKs) in Chungcheong Province. Among 30 MKs, 16 plants at $100{\mu}g/ml$ showed over 90% scavenging activity of 1,1-diphenyl-2-picrylhydrazy (DPPH) and 30 plants exerted the hydroxyl radical scavenging effect over 55%. Fourteen plants at the concentration $50{\mu}g/30{\mu}l$ showed strong microbial inhibition activity against Escherichia coli and Staphylococcus aureus, with clear zone greater than 11 mm in disc assays. Furthermore, the protective effect against anti-inflammatory system using RAW 264.7 macrophage cell was also studied. The treatment of LPS & INF-${\gamma}$ to RAW 264.7 cell induced nitric oxide (NO), however inhibit the formation of NO less than 50% of 5 plants. The present result indicates that the 30 species of MKs exerts protective effect of oxidative stress, antimicrobial activities and anti-inflammatory. In particular, Rhus javanica and Cornus controversa showed stronger effect on not only radical scavenging activity and inhibits growth of S. aureus but also highest protective effects from inflammation.

• 식물분류학회지
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• 제42권1호
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• pp.64-67
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• 2012

부산광역시 기장군 철마면에서 우리나라 끈끈이귀개과의 미기록 분류군인 좀끈끈이주걱(Drosera spathulata Labill.)이 발견되었다. 이 분류군은 동부 오스트레일리아에서부터 동남아시아, 일본, 중국, 대만에 주로 분포하는 것으로 알려져 왔다. 근연 분류군인 끈끈이주걱(D. rotundifolia)과 비교하여 잎의 크기가 작고(10-20 mm long, 2.5-4.5 mm wide), 화서에 조밀한 선모가 있으며, 분홍색 꽃이 피는 점에서 뚜렷이 구분된다. 국명은 전체가 근연 분류군보다 왜소한 특징을 고려하여 '좀끈끈이주걱'으로 신칭하였다. 주요 형질에 대한 도해와, 기재, 서식지 식물사진, 검색표를 제시하였다.

• 복식문화연구
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• 제22권2호
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• pp.225-239
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• 2014

This study examines how environmental consciousness and socially responsible clothing consumption attitude influence people's perceptions of the consequences of fast fashion. Data were collected through a questionnaire survey administered to females in their 20s to 40s, and a total of 430 surveys were used in the final analysis. The research results are as follows. First, environmental consciousness-which was conceptualized as interest in consumer effectiveness and the environment-had a positive influence on attitudes toward socially responsible clothing consumption attitude, i.e., clothing recycling and resource conservation. As the perception of consumer effectiveness was high, respondents had a tendency not to follow trends. Second, consumers with a high level of interest in the environment perceived the effect of fast fashion on the environment as serious, and they felt negatively toward personal use of fast fashion. Third, consumers with strong resource conservation behavior perceived the effect of fast fashion on the environment as serious, but those with positive attitudes toward secondhand clothing did not appear to have that perception. Finally, consumers who followed trends and those with weakly held attitudes about resource conservation felt positively toward personal use of fast fashion. The results of this research indicate that environmental consciousness is an important factor for socially responsible clothing consumption behavior. In addition, consumers with strong attitudes regarding resource conservation were more perceptive of the negative effect of fast fashion on the environment.

• Animal cells and systems
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• 제14권4호
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• pp.315-322
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• 2010

We studied and compared the age structure, body size, and growth rates of field populations of two Korean salamander species (Hynobius yangi and Hynobius quelpaertensis) to elucidate important aspects of basic population dynamics of these two endemic Hynobius species. In both populations, females were sexually mature at three years of age, while H. yangi and H. quelpaertensis males matured at two and three years of age, respectively. Both males and females of H. yangi and H. quelpaertensis attained a maximum age of 11 years and 10 years, respectively. In both species, the snout-vent length (SVL) and body weight (BW) of the females were greater than those of the males. The SVL, BW, and asymptotic SVL of both male and female H. yangi were smaller than those of H. quelpaertensis. The adult growth rates after sexual maturation of male and female H. yangi were lower than those of H. quelpaertensis, possibly resulting in the smaller body size of the former, although overall growth coefficients were not significantly different between the two species. We also compared the age structure and growth rates of three Korean and three Japanese species of Hynobius.

• Journal of Applied Biological Chemistry
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• 제55권3호
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• pp.169-172
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• 2012

The aim of this research was to investigate the antibacterial activity of Clerodendron trichotomum. Antibacterial activities of the n-hexane, methylene chloride (MC), ethyl acetate, and n-butanol fractions from C. trichotomum were tested against Staphylococcus aureus, Escherichia coli, and Helicobacter pylori. The n-hexane and MC fractions showed antibacterial activity against H. pylori at a concentration of 1.7 mg/mL and showed inhibition zones of 10 and 11 mm in disc assay, respectively. Further testing of 22-dehydroclerosterol and ${\beta}$-amyrin (each 3.4 mg/mL) from the MC fraction of C. trichotomum revealed moderate antibacterial effects against E. coli, S. aureus, and H. pylori. In particular, ${\beta}$-amyrin showed clear zones of 12 and 13 mm against E. coli and H. pylori, respectively, suggesting its potential as an antibacterial agent. The active compounds from C. trichotomum might provide a promising therapeutic agent against infections by E. coli, S. aureus, and H. pylori.

• 한국습지학회지
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• 제22권3호
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• pp.200-216
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• 2020

Many studies conducted in Kenya regarding water resource governance have focused on the mandate of Water Resource Users Associations (WRUAs) with less attention being accorded to their effectiveness in conservation of wetlands. This study assessed the effectiveness of WRUA committees, and challenges faced in conservation of Rwamuthambi Sub-catchment. The study employed exploratory descriptive research design. Data was collected through questionnaires, semi-structured interviews, observations and review of secondary data. Chi square and descriptive statistics was used to analyze the data. The survey results revealed that only 15% of WRUA committee understood water resources management while 35% were aware of relevant legislations. Factors of wetland degradation showed significant association with existence of WRUA (χ2 (4, N=180) = 20.46, p< .01) where (χ2- chi square (degrees of freedom, N = sample size) = chi-square statistic value, p = p value), although WRUA contributions were perceived differently per agro-ecological zone (χ2 (8, N=147) = 15.51, p>.05). Challenges unearthed were inadequate financial and human resources, lack of understanding, ineffective collaborative governance, poor support from county government and private ownership of riparian land reserve. There is need for WRUAs to embrace collaborative governance for effective conservation of wetlands. Integration of sub catchment management plan with county land use plans and policy review is also required.

• 농업과학연구
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• 제39권2호
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• pp.169-175
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• 2012

To search for the aldose reductase (AR) inhibitors from Korean folk plants, the inhibition of rat lens AR in vitro using the methanol (MeOH) extracts from Korean folk plants was investigated. Among fifty four Korean folk plants tested, the MeOH extract of Cedrela sinensis showed highest inhibition of AR ($IC_{50}$ value, 2.52 ${\mu}g/ml$). The plant C. sinensis has a possibility of new natural resources for the development of AR inhibitor for the prevention of diabetic complications.

• 한국환경복원기술학회지
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• 제9권5호
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• pp.41-49
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• 2006

Private land within national parks has raised acute questions for impact assessment practitioners as to whether it is ecologically resourceful enough to be conserved or whether it should be removed from national parks and compensated accordingly. The purpose of this study is to provide a framework for spatial decision support through assessing ecological resource of private land within national parks. In order to assess the ecological resource, private land within national parks was analyzed and quantified based upon topography, flora and fauna. National parks, according to the ecological resource assessment, have been divided into three groups : the parks in need of careful attention for conservation; the parks needed to be retained as buffers, and; the parks that can be released to private land. According to the analysis, part of Mountain Joowang is the third-tier land that does not require conservation efforts. This case study intends to help policy-makers decide whether some private land within national parks can be released and, after the release, what should be done to prevent reckless development of the released land.

• 자원ㆍ환경경제연구
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• 제9권3호
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• pp.563-587
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• 2000

A program of ecosystem conservation fund was proposed by the Ministry of Environment in Korea and has been supposed to come into force in early 2001. However, currently the program is withheld because there are strong objections to it for several reasons. The prime purpose of this paper is to analyze the reasons and problems involved in the program, to suggest some guidances to revise the program, and to design a new program by using a multiattribute index based on environmental significance. We found that there are two major problems of the program: first, inequity in choosing those whom the fund are levied on; second, irrationality of the way the fund are imposed. The paper also provides a simulation study to analyze the effects of four scenarios concerning feasible alternatives. We argue that natural resource damages caused by development works cannot be fairly prevented by the existing environmental impact assessment system only and should be used in harmony with the new system.

• The Journal of Asian Finance, Economics and Business
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• 제8권8호
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• pp.465-473
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• 2021

This study is the application of a choice experiment to assess Mekong Delta urban households' preferences and motivations for ecosystem conservation in the U Minh forest. The study applied a choice modeling approach to estimate the economic values of the proposed ecosystem conservation program in the U Minh forest by accessing urban consumer preferences and their willingness to pay for the project. Discrete choice experimental data was collected from 450 residents in the cities of the Vietnamese Mekong Delta. The multinomial logit model was employed to identify consumer's stated preferences for the environmental and sustainability attributes of the conservation project. The results showed that Mekong Delta urban residents paid much attention to the proposed project to protect and develop the U Minh forest. In addition, the results showed that higher education, income, and knowledge of the U Minh forest revealed a higher likelihood of selecting the project, while the older residents would select the status quo more than the younger ones. The study also proved that the effect of participation had a strong impact on the willingness to pay for the project. The findings could be useful for policymakers to take action to raise resident's awareness and willingness to pay for the U Minh forest project.