• Korean Journal of Environmental Biology
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• v.34 no.3
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• pp.212-215
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• 2016

We developed a new ecotoxicological test method using native test species, eggs of Ephemera orientalis, and five kinds of industrial wastewater were tested to validate the test method. The water samples were collected in Jun 2006 from the following industries: pesticide, metal plating, PCB, leather1, and leather2. Wastewater and effluent were diluted by distilled water, respectively, to prepare various concentrations, 100, 50, 25, 12.5, 6.3, 3.1, and 0%. For the egg bioassay, 20 freshly laid eggs (<24 h old) were exposed to test solutions in a Petri dish ($52{\times}12mm$) at $20^{\circ}C$ with photoperiod of 16 h light and 8 h dark for 14 days. The median egg hatching concentrations (EHC50) were estimated using Probit analysis. All EHC50s of wastewater were less than 3.1%, which meant very high ecotoxicity except for the wastewater of PCB industry having 6.1% of EHC50. Among the effluents, the least toxic effluent was from pesticide industry having 58% of EHC50, while the effluent of leather2 was the most toxic having 7.3% of EHC50.

• Korean Architects
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• no.12 s.344
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• pp.50-50
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• 1997

이번 지역건축을 기획하면서, 여러 가지 상념에 잠기게 되었다. 건축에서 지역성이 어느 정도 내재되어 있는지 살펴보고자 하는 것이 혹시 더욱 부정적 결과를 확인하는 것이라면 이를 확인할 필요가 있을지, 또 어떤 긍정적 결과를 확인할 수 있을지, 게다가 여러 개발도상국의 상황과 아시아의 건축적 진행을 보면서, 어쩌면 우리는 더욱 난감한 상황을 보게 될지도 모른다. "건축을 발전시켜온 어떤 민족도 각기 독자적 언어, 복장, 민속이 있는 것처럼, 그들이 좋아하는 형태를 발전시켜왔다. 19세기에 문화의 국경이 붕괴될 때까지 온 세계의 건축에는 지역고유의 형태와 디테일이 있었다. 그리고 어떠한 지역특유의 건물도 사람들의 창조력과 그 지역의 필요성의 결합에 의하여 태어난 아름다운 산물이었다. 그러나 현대 이집트에는 이집트 고유의 토착양식을 찾아볼 수가 없다. 바로 이집트인의 서명이 없다. 그것이 부자들의 집이건 가난한 자의 집이건 무성격하기는 마찬가지이며 이집트인의 자취란 사라져 버렸다."(하산 화티,1973년) 선진국은 스스로 산업혁명을 일으켰고, 이런 사회적 문화적 변동에 적응하기 위하여 1세기 이상의 시간적 여유가 있었다는 것이다. 개발도상국의 급속한 변화에는 건물도 변화의 수단으로 이용되었다는 것이다. "민족적이며, 지역적인 전통이야말로, 새로운 지역주의의 기초로서 보존하고 사용되어야 된다는 '섬세한' 서양의 관찰자들의 탄원은 이같은 상황에서는 전연 고려되지 않았다."고 커티스는 보았다. 섬세한 서양인이 아니라 자국민 스스로 자신의 문명에 대하여 파괴적인 입장에 서 있다면 더욱 난감한 일이다. 지역주의의 의미는 무엇일까? 건축에서 '지역'의 범주는 어디인가? 인종적 분포 또는 민족적 무리를 이름지은 것인가? 아니면 인종과 민족의 공통점인가? 그것도 아니라면 정치적 경계선으로 둘러싸인 경계를 말하는 것인가? 모든 지역이 다 지역주의로 대별될 수 있는가? 어느 곳이 건축에서의 중심지역이며, 또 지역주의는 누가 판별하는가? 프램튼은 문화적인 중심지와 종속적 관계를 지니는 지역주의를 잘못된 구조로 보았다. 근래 10년간 세계적으로 다양한 지역주의가 대두했다. 지역의 개념적, 제도적, 법적인 상태가 어떠한가가 중요한 요인이 된다. 19세기 동안에 유럽사람들이 그들의 정치적 독립을 위한 목적에 활용하기 위하여 부분적으로 거짓된 역사관을 피력했을 때, 유럽지역에서의 지역주의 개념들은 아이리쉬, 까딸로니아, 핀랜드 등을 평가하는 역할이 있었다고 한다. 지역주의를 "감상적인 민족적 편견에서 비롯된 광신적 배타주의"라고 낮추어 바라보는 그로피우스의 시각에 대해, 당당히 맞설 수 있어야 할 것이다. 리꾀르의 말대로 미래에 어떠한 유형의 참된 문화를 유지하는 것은 궁극적으로는 문화나 문명의 단계에서 외래의 영향을 적절하게 하면서 지역문화의 활기찬 형태를 발생시키는 우리 능력에 달려있다. '지역적' 범위는 서구에서 합중국으로 존재하는 경우, 대부분 이질적 문화들의 혼합지역이기 때문이다. 한국과 같이 비교적 단일한 성분의 종족으로 한 국가가 유지된 경우와 미국과 같이 다양한 종족이 모인 경우 등과 비교하면 '지역'이란 이름에 어떤 판단기준이 있어야 할까? 근래 지역적 변동이 적었던 한국의 경우는 상대적으로 재론할 여지가 적다. 그러나 한국의 역사시대 내에서도 확인되지 않은 부분들이 존재하고, 역사시대의 범위를 넘어서 선사시대로 확대하면 '지역'의 개념의 외연적 대상은 더욱 모호해진다.

• Journal of Life Science
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• v.26 no.11
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• pp.1330-1335
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• 2016

Sasa species leaves have been used in traditional medicine for their anti-inflammatory, antipyretic, and diuretic properties. Sasa quelpaertensis Nakai is a small bamboo grass that grows only on Mt. Halla on Jeju Island, Republic of Korea. This small bamboo grass has recently been the focus of much attention due to its potential biomass as well as its beneficial health effects. In this study, to promote the efficient utilization of the S. quelpaertensis leaf, we established a simple preparation method for phytochemical-rich extract (PRE) by comparing phytochemical contents and biological activities according to extraction methods. high performance liquid chromatography (HPLC) analysis revealed that the contents of two major phytochemicals such as, tricin (5.35 mg/g) and p-coumaric acid (44.10 mg/g) contained in PRE were higher than those in fresh hot water extract (SQH, p-coumaric 23.39 mg/g, tricin 0.18 mg/g) and ethanol extract (SQE, p-coumaric 10.8 mg/g, tricin 0.38 mg/g). The antioxidant activities [1,1-diphenyl-2-picrylhydrazy (DPPH) radical scavenging activity, 2,2'-azino-bis-3-ethylbenzothiazoline-6-sulphonic acid (ABTS) radical scavenging activity, nitric oxide (NO) scavenging activity, and xanthine oxidase inhibitory activity] of PRE were higher than those of SQH and SQE. PRE effectively inhibited NO production in LSP- stimulation RAW 264.7 cells, and the growth of human promyelocytic leukemia (HL-60) cells. These results suggest that PRE has a potential as a promising antioxidant and anti-inflammatory agent.

• Journal of Life Science
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• v.32 no.3
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• pp.202-209
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• 2022

The green alga Chlamydomonas reinhardtii, a unicellular haploid eukaryote, has long been used by researchers and industries as a cell factory to produce high value-added microalgae substances using genetic modification. Microalga K01, presumed to be Chlamydomonas, was isolated from 12 freshwater samples from the Chungcheong and Jeolla regions to replace C. reinhardtii, an introduced species currently used in most basic and industrial research. The isolated K01 strain was identified as C. reinhardtii through morphological and phylogenetic studies of the 18S rDNA gene sequence (NCBI accession number KC166137). The growth and lipid content of the isolated C. reinhardtii K01 were compared with three wild and four mutant strains in TAP medium, and it was found that the K01 strain could produce 1.74×10⁷ cells/ml by the third day of culture. The growth rate of C. reinhardtii K01 was 1.5 times faster than UTEX2244, which showed the highest number of cells (1.20×10⁷ cells/ml) among the compared strains. The lipid content of the isolated C. reinhardtii K01 (20.67%) was similar to those of the wild strains, although the fatty acid oleate C18:1 was not detected in the isolated strain but was identified in the seven others. The cell density of the isolated strain increased to 0.87 g/l during a six-day culture in BG11 medium, where nitrate (NaNO₃) was introduced as a nitrogen source, while the seven acquired strains showed almost no cell proliferation.

• Korean Journal of Environment and Ecology
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• v.22 no.3
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• pp.207-220
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• 2008

Tourism in the natural environment grows significantly and in many tropical countries it becomesthe important earning of the nations. Nevertheless, tourism impact to environment and cultural values has become the threats to the sustainability and competitiveness of such industry. Therefore, the appropriate planning and management of tourism destination sites where environmentally and culturally fragile are needed in order to increase economic benefits, sustain local culture and conserve environment in balance. The aims of the paper are to examine tourism practices, to determine socio-cultural and natural resources, and to assess local people perception to cultural landscape and its future tourism development in order to formulate the appropriate strategies to achieve sustainable tourism. A case study was carried out at Tengger highland, Bromo Tengger Semeru National Park(BTSNP) East Java. Official documents were gathered and interviews with several key persons had conducted to determine recent status of tourism, resources capital and the existence of local people. Semi-structured interviews and questionnaires were carried out at Tenggerese villages to explore local people perspectives to tourism development, culture preservation, and cultural landscape conservation issues. It is followed by descriptive analysis of vegetation to assess the recent status of environments based on vegetation information. Our findings reveals that tourism grows significantly at BTSNP, and Tengger Caldera as spiritual and cultural sites for local people become the centre for tourism activities. The abundance cultural and natural resources are the significant capital for sustainable tourism. Tenggerese argues that tourism should be planned to provide benefits to local people, preserve tradition and able to conserve nature in order to ensure the living sustainability of Tenggerese. The overall result of the study provide general feature of recent status of the cultural and natural resources as well as positive society perception in order to establish a strategy for sustainable tourism in cultural landscape.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.3 no.1
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• pp.26-27
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• 1978

It can be expected that intelligence and knowledge will be the core of the post-industrial society in a near future. Accordingly, the age of intelligence shall be accelerated extensively to find ourselves in an age of 'Communication' service enterprise. The communication actions will increase its efficiency and multiply its utility, indebted to its scientic principles and legal idea. The two basic elements of communication action, that is, communication station and communication men are considered to perform their function when they are properly supported and managed by the government administration. Since the communication action itself is composed of various factors, the elements such as communication stations and officials must be cultivated and managed by specialist or experts with continuous and extensive study practices concerned. With the above mind, this study reviewed our public service officials law with a view to improve it by providing some suggestions for communication experts and researchers to find suitable positions in the framework of government administration. In this study, I would like to suggest 'Occupational Group of Communication' that is consisted of a series of comm, management positions and research positions in parallel to the existing series of comm, technical position. The communication specialist or expert is required to be qualified with necessary scientific knowledge and techniques of communication, as well as prerequisites as government service officials. Communication experts must succeed in the first hand to obtain government licence concerned in with the government law and regulation, and international custom before they can be appointed to the official positions. This system of licence-prior-to-appointment is principally applied in the communication management position. And communication research positions are for those who shall engage themselves to the work of study and research in the field of both management and technical nature. It is hopefully expected that efficient and extensive management of communication activities, as well as scientific and continuous study over than communication enterprise will be upgraded at national dimensions.