• The Korean Journal of Malacology
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• v.11 no.1
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• pp.35-50
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• 1995

저자들은 1994년 7월부터 1995년 2월까지 남해안 마산만의 덕동 지역과 대주군인 자란도 및 이수도에서 오염원의 영향을 민감하게 받는 종을 선별하기 위하여 조간대 및 아조대의 저서동물 군집을 채집하고 정성, 정량적 분석을 실시하였다. 조사결과 덕동 지역 군집은 대조군인 자란도나 이수도에 비하여 구성 종 수가 현저히 적었고 다양도지수 및 균등도가 낮았으며 그 다음은 자란도와 이수도순이었다. 우점도는 덕동이 가장 높았고 자란도, 이수도순이었다. 또한 조사지역 내에서 연체류중 패각만 채집된 종수가 덕동에서 19종, 자란도 3종, 이수도 4종으로 중복된 것을 제외하면 총 25종이 되며 이들 또한 오염과 관계 있을 것으로 예견된다.

• Journal of Korean Library and Information Science Society
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• v.52 no.3
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• pp.197-215
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• 2021

This study analyzed experimental studies of intervention programs provided to improve reading comprehension of elementary school students using a systematic review research method. Cochrane's handbook was applied, and key questions were formulated according to the PICOTS-SD. The inclusion and exclusion criteria were applied to 1,610 papers searched in KCI, and the final 18 cases were selected for analysis. The risk of bias was evaluated using the 'RevMan5' tool provided by Cochrane. As a result of the evaluation, the risk of bias was low in most areas. And for the qualitative analysis of these papers, a data summary table was prepared. As a result, the types of intervention programs were diverse, and in many cases, upper grade students were applied. The size of the experimental group ranged from 6 to 29, and there were more QED-based studies than RCT-based studies. The most mediation time was 40 minutes, and the number of mediation sessions was 8 to 24. And in all studies, the intervention programs were found to be effective in improving reading comprehension.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.29 no.6
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• pp.601-611
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• 2011

The paper deals with the selection of 3D display devices in accordance with the user's conveniences and accuracy of spatial information by applying 3D display devices to Spatial Information Update System (SIUS) which generate edit and update digital thematic maps. After applying different manufacturer's 3D display devices to SIUS, aerial images acquired from the stereo images were displayed through the devices and spatial information was extracted from the displayed 3D images. Assessment of 3D display devices were based on quantitative and qualitative analysis on accuracy of spatial information and user's conveniences. Planar's PL2020 and Redrover's Tru3Di 3D monitor has expressed outstanding display environment in 3D related tasks for the generation of spatial information compared to other 3D display devices. System improvement is expected regarding accuracy of spatial information, work efficiency and user's conveniences.

• Applied Biological Chemistry
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• v.13 no.3
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• pp.237-242
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• 1970

Fifty strains of mold which isolated from the various sources were screened for the production of Naringinase which hydrolyse naringin, the 7-rhamnoe-glucoside of 4'.5.7. - trihydroxyflavanonin, the main bitter principle of citrus fruits and grape fruits. Of the 4 strains yielded naringinase with significant activity, S-1 strain was selected on the criterion of industrial application, and some properties of crude naringinase of this S-1 was investigated. The results obtained were as follows. 1. Naringenase obtained from S-1 strain has optimum pH range from 3.0 to 5.0 for its activity. 2. Production of naringinase was increased on the addition of naringin to the medium. 3. Hydrolysis of naringin with approporiate concentration of naringinase was carried out linerly up to 80% on the 0.1% substrate solution. 4. The optimum temperature for its activity was $50^{\circ}C$, and this enzyme was inactivated 80% of its total activity at $70^{\circ}C$ for 10 minutes, 40% at $60^{\circ}C$ for 30 minutes. But signifiant decrease of activity were not occurred by heat treatment at $50^{\circ}C$ for 2 hours. 5. Crude enzyme of the naringinase obtained from S-1 strain was competitively inhibited by addition of glucose on the substrate, and inhibitor constant of the glucose on the this enzyme was 1.5 Mol, and inhibition rate were linearly increased according to the increase of sucrose concentration and 56% of its total activity was inhibited at 1 Mol sucrose solution.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2012.04a
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• pp.488-491
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• 2012

우리나라는 1960년대부터 실시된 조림 정책을 통해 산림이 점차 울창해지고 있어 산림 내 연소물질이 증가되어 산불 피해 강도가 점차 높아지고 있다. 산불방지에 대한 예방차원으로 피해를 저감시키거나 위험을 완화시키는 대표적인 임업적 기술을 적용하는 방법으로 방화림 조성과 방화선 구축을 들 수 있다. 방화림 조성은 산림내 연소물질 관리 또는 수종을 갱신하여 산불확산으로부터 화재강도를 낮추어 산림의 산불위험성을 낮추는 방법이다. 대표적인 기술로는 간벌과 가지치기, 하예작업, 활엽수림 조성 등의 방법이 있다. 방화선 구축작업을 임내 연료물질을 완전히 제거하여 산불이 확산되지 않도록 구축하는 작업이다. 이에 본 연구에서는 일본과 중국의 산불 방화림 조성과 방화선 구축 사례를 조사 분석하여 국내 적용 가능한 기술을 선별하고자 하였다. 그 결과, 산불에 강한 수종을 선발하였고 산불에 강한 숲 조성 방법 및 방화선 구축 방법 등을 도출하였다. 이에 본 연구 결과를 토대로 산림내 주요사찰, 기간시설 및 군사시설 등과 같은 주요시설물이 산불로부터 안전하게 보호되고 피해를 최소화하는데 도움이 될 것으로 사료된다.

• Journal of the Korea Convergence Society
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• v.12 no.2
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• pp.259-269
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• 2021

Many researchers have discussed on a policy establishment to revitalize a regional industry of a domestic ecosystem. However, it is rare to consider activation measures and priorities that are appropriate for local characteristics. Therefore, this study conducted a qualitative study to gather and analyze the views of expert groups in order to derive measures to revitalize the automobile industry in Gwangju. We examined the current status of the automobile industry in Gwangju based on a literature survey and in-depth interviews and what kind of crisis there is. We then derive strategic candidates for activation measures to address this. In addition, the relative importance and priorities of the methods derived using AHP techniques were identified. This leads to five strategies on which methods should be applied first. This will be used as the basis for future strategy development.

• Journal of Life Science
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• v.28 no.1
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• pp.68-77
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• 2018

The purpose of this study was to isolate the probiotic lactic acid bacteria, and verify the possibility of the final selection strain as probiotic material. For screening of biogenic amines non-producing microorganisms, 42 lactic acid bacteria were isolated from various berries, extract and vinegar grown in Sunchang. Isolates were investigated for various physiological activities such as extracellular enzyme, antimicrobial and antioxidant activities, and 5 isolates were firstly screened. SBB07 was finally selected by analyzing the biogenic amine, and named Lactobacillus brevis SBB07 by 16S rRNA sequencing analysis. Next, SBB07 was assayed for their survival ability when exposed to acidic and bile conditions as well as heat and antibiotic resistance. As a result, SBB07 showed more than 86% and 54% higher survival rate in acidic condition at pH 2.0 and bile resistance with 0.5% oxgall. In addition, SBB07 showed a survival rate of more than 113% in $60^{\circ}C$, and also confirmed that it has resistant to various antibiotics. As a result of confirming the possibility of prebiotics, SBB07 showed the best utilization of GOS as a prebiotic substrate, and utilization of FOS and inulin were also high. These results suggest that SBB07 have good potential for application as probiotic lactic acid bacteria.

• Korean Journal of Microbiology
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• v.51 no.1
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• pp.48-60
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• 2015

612 strains isolated from Korean traditional fermented food in Sunchang and their investigated biochemical characterization and ability of biogenic amines non-producing. We selected the SCJ4 having various activity by measurement of extracellular enzyme, antioxidant and antimicrobial activities. Selected strain SCJ4 by 16S rRNA sequencing and biochemical characterization was named Bacillus subtilis SCJ4. And then, we investigated cell growth of SCJ4, and optimized of culture medium constituents using response surface methodology as statistically method. Response surface methodology used Plackett-Burman experimental design for screening of medium constituent. Tryptone, peptone and $MgSO_4$ as medium constituent improving cell growth selected. In order to find out optimal concentration on each constituent, we carried out central composite design. Consequently, optimized concentrations of tryptone, peptone and $MgSO_4$ were predicted to be 15.35 g/L, 12.235 g/L, and 3.5 g/L respectively. Through the model verification, we confirmed about 1.28-fold improvement of the dried cell weight from 0.8767 g/L to 1.1222 g/L when compared to basal medium.

• Science of Emotion and Sensibility
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• v.16 no.4
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• pp.493-502
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• 2013

The purpose of this study was to find out the adjective scales, which will be used in the qualitative sensory evaluation of taste, by collecting and analyzing adjectives of expressing taste of Korean language. For the purpose, we rated the mutual similarities among selected 92 adjectives which include the sense of taste, texture, smell and temperature from foods, and then carried out factor analysis and clustering analysis by using correlation based on the similarities. According to the factor analysis there are more than 10 important factors involved in the linguistic representation of taste including food temperature, texture and smell as well as taste. Also, from the cluster analysis, we found that the adjectives can be clustered with groups of the adjectives representing general taste, negative taste, texture and temperature of food. In addition we analyzed the correlation between the adjectives to represent the generic preference of taste and the adjectives to express individual factors of the preferences that are resulted from cluster analysis. The analysis results could show that we need to restrict the type of foods to find out the meaningful limited number of sensory adjective scales for taste in the future.

• KSBB Journal
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• v.22 no.5
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• pp.356-361
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• 2007

Cyanobacteria are a very old group of prokaryotic organisms that produce very diverse secondary metabolites, especially non-ribosomal peptide and polyketide structures. Although some cyanobacteria produce lethal toxins such as microcystins and anatoxins, some may be useful either for development into commercial drugs or as biochemical tools. Detection of unknown secondary metabolites was carried in the present study by a screening of 98 cyanobacterial strains from Cyanobiotech GmbH in order to establish a screening process, isolate pure substances and determine their bioactivities. A degenerated polymerase chain reaction technique as molecular approaches has been used for general screening of NRPS gene and PKS gene in cyanobacteria. A putative PKS gene was detected by DKF/DKR primer in 38 strains (38.8%) and PCR amplicons resulted from a presence of NRPS gene were showed by MTF2/MTR2 primer in 30 strains (30.6%), respectively. A screening of interesting strains was performed by comparing PCR screening results with HPLC analyses of extracts. HPLC analysis for a detection of natural products was performed in extracts from biomass. 5 strains were screened for further scale-up processing. 7 pure substances were isolated from the scale-up cultures and tested for bioactivities under consideration to purity, amount and molecular weight of substances. One substance isolated from CBT 635 showed cytotoxic activity. This substance may be regarded as Microcystin LR.