• 한국의류학회지
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• 제28권5호
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• pp.668-677
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• 2004

This study examines the effects and influences of fumigation on the antimicrobial treatment of excavated dresses in two different museum settings using chemical composite of Methyl Bromide and Ethylene Oxide. The microbial test indicated that the prewashed samples contained Micrococcus, Bacillus, Staphylococcus, and some unidentified fungi and that the total number of microbes decreased after washing. While it was observed that most germs were removed immediately after fumigation, Bacillus was still found and its number even increased. After 5 months, the number of microbes found in Museum A was smaller than Museum B, which shows that Museum A equipped with better environment control facility was superior to Museum. B in terms of exhibition and preservation of dresses against organic damages. In addition, the result indicates that fumigation is an effective measure against the growth and reproduction of microorganisms, considering that the number of microorganisms decreased after fumigation. The color of test sample showed immediate change after fumigation but color difference became stabilized and decreased with the passage of time. The test samples from both museums showed similar patterns.

• 대한치과의사협회지
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• 제55권5호
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• pp.358-364
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• 2017

Nowadays, there has been an increasing interest in the preservation of natural dentition and the proper occlusion related to tooth wear for quality of life. Tooth wear means the loss of tooth enamel structure. This is happened by many causes which is the combined effects of many mechanisms. For keeping proper occlusion, dentists should check tooth wear status with acceptable methods and tools for the proper diagnosis. Until now, there have been many traditional qualitative ways to measure tooth wear which are intuitive, rapid, and simple. On the contrast, they are not objective nor reproducible. With the development of related technique, new quantitative methods using CAD and 3d scanners. This article aimed to introduce qualitative and quantitative methods for tooth wear measurements.

• 환경영향평가
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• 제4권1호
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• pp.37-46
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• 1995

This study was carried out to find the problems of assessment on terrestrial ecosystem part in environmental impact analysis(EIA) and to suggest the proper amelioration measures by analyzing 19 environmental impact statements(EIS) published during the period from 1991 to 1994. The results obtained from this study were as follows. Field survey for the investigation of fauna and flora in project areas should be conducted at least 3 times a year and name of investigator should be written on the EIS clearly. Increase or decrease in degree of green naturality and productivity cannot be an absolute criteria for expressing the amount of changes in ecosystem. Evaluation for the ecosystems and their composition in project area is more important than presenting merely the increase or decrease in degree of green naturality and productivity. Alleviation measures in 19 EISs analyzed in this study were summarized into 6 types: They are establishment of landscape plan, transplanting of useful trees preservation of big tree and protected species, restoration and preservation of existent vegetation, establishment of soil conservation measures and diminution of the impact on animal. However, they were somewhat insufficient because they wouldn't suggest the alleviation measures in detail. The more positive counter-proposals are needed to decrease the impact of the project on terrestrial ecosystem.

• 환경영향평가
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• 제21권3호
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• pp.431-443
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• 2012

Wind holes or air holes, from which cool air blows out during the summer, but mild air comes out during the winter, have provided the phytogeographically important refugia for cryophilous or cold-loving boreal flora during the Holocene period. At present, wind holes are serving as a faraway disjunctive habitat for Pleistocene relict glacial floristic elements, and present an invaluable information to reconstruct the natural history. Present work aims to collate the nationwide distribution and relevant DB on the potential wind holes of Korea based upon media and literature sources, along with geographical informations, such as place name, topographic map, environmental geographical information, flora, monitoring data of Korea National Arboretum, and field survey data. Geographical information on sixty nine wind hole sites have compiled and analyzed on the basis of flora and presence of fossilized periglacial landforms, such as talus, block field, and block stream, and sixteen sites have thereafter carefully selected and scrutinized through field surveys. To maintain a sustainability of wind hole ecosystem, including their original landform, micro-meteorological phenomena and plant community therein as a refugia or habitat for relict plant species of Pleistocene glacial period, appropriate restrictions and preservation measures are required.

• 한국식품저장유통학회지
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• 제7권2호
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• pp.133-138
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• 2000

The research was conducted to measure the effect of temperature on respiratory and quality characteristics of 'Tsugaru' apple(Malus domestica Borkh) during storage at 4$^{\circ}$C, 10$^{\circ}$C and 20$^{\circ}$C. Respiration rate of the apple just after harvest was 7.57 mL CO$_2$/kg/h at 20$^{\circ}$C. It was decreased rapidly and was 2.86 mL CO$_2$/kg/h after storage for 45 days at 20$^{\circ}$C. The apples showed the highest ethylene production rate at 10$^{\circ}$C and 20$^{\circ}$C after 14 days, and at 4$^{\circ}$C after 28 days during storage. Weight of the apple was reduced by 2.9% after 120 days at 4$^{\circ}$C and by 6.1% after 45 days at 20$^{\circ}$C. Color difference of peel and pH increased with the temperatures but titratable acidity and flesh firmness showed the reverse trends during storage. According to the subjective quality test, it could be suggested that the shelf-life of the apple is 86 days at 4$^{\circ}$C, 65 days at 10$^{\circ}$C and 37 days at 20$^{\circ}$C, respectively.

• 한국식품저장유통학회지
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• 제13권4호
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• pp.427-431
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• 2006

사과 저장시 전처리로써의 차압예냉이 품질 변화에 미치는 영향을 알아보기 위하여 중량, 경도, 산도, 당도, 부패율과 비타민 C의 함량을 무처리구와 비교 분석하였다. 중량은 저장기간에 따라 모두 감소하였으며 두 시험구간의 차이는 크게 나타나지 않았으나 최종 24주에 무처리 구가 낮게 나타났다. 경도는 전처리 직후 예냉군이 $1.04kg_f$, 대조군이 $1.17kg_f$였으나, 최종 24주 예냉구가 $0.89kg_f$로 대조구 $0.82kg_f$보다 더 단단하게 나타났다. 산도는 예냉처리구가 대조구에 비해 산도가 높아 변화가 적었으며, 당도 역시 대조구에 비해 예냉처리구가 당도를 유지하는 것으로 나타났다. 부패율은 24주에 대조구에서 46.4%의 부패율을 보인 반면, 예냉처리구는 34.5%로 상대적으로 낮은 부패율을 보였다 비타민 C는 전처리 초기의 함량이 9.52였으며, 24주엔 대조구가 3.67 mg%, 예냉처리구에서는 4.21 mg%로 나타나 예냉처리구의 감소율이 낮았다. 연구 결과사과의 차압예냉처리는 대조구와 비교하여 산도, 당두 경도를 유지하고 있었으며, 부패율을 낮추었으나 비타민 C 함량 변화에는 효과가 없는 것으로 나타났다.

• 한국식품저장유통학회지
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• 제8권3호
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• pp.258-263
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• 2001

마늘을 $0^{\circ}C$에서 일반 대기 및 CA 조건 하에서 4개월 저장하면서 기간 및 조건에 따른 저장 중 마늘의 생리적 품질을 폭정하고 pungency와 fructan 등의 화학적 성분 변화를 분석하였다. 저장 중 마늘의 생리적 품질은 저장 조건에 대해서 큰 차이는 없었으나, CA 저장한 마늘이 일반 대기에서 저장한 마늘에 비해서 수분 감량이 더 많이 일어나 dry weight와 경도가 낮게 나타났다. 표면색은 저장 4개월에서 어둡고 진하게 변했다. CA 저장이 마늘의 발근은 억제하지 못하지만 발아율은 일반 대기저장에 비해서 약 50% 억제하는 것으로 나타났다. 일반 대기에서 저장한 마늘이 CA 저장한 마늘보다 더 높은 pungency를 나타내었으며 특히 pyruvate는 산소 농도가 닻은 (1% $O_2$) CA 저장 조건에서 가장 낮은 값을 나타내었다. Fructan은 저장기간에 따라서 점차 감소하는 경향을 나타내었고 fine sugar는 점차 증가하였다. 발아율이 높은 일반 대기 저장의 fructan 함량이 CA 저장의 경우보다 낮은 값을 나타내었다 그러나 20%의 이산화탄소 농도에서 저장한 마늘의 fructan이 가상 많이 감소하는 경향을 보였다

• 한국조경학회지
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• 제35권6호
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• pp.14-20
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• 2008

The agricultural reservoir watershed plan suggests three specific indices or ways to measure the potential for maintaining reservoir quality in balance with existing or proposed uses: an index of the reservoir's vulnerability to accelerated eutrophication, an index of the degree of land use intensity in reservoir watersheds, and an index of present water quality. Three items that contribute to reservoir eutrophication are included in the vulnerability index: the ratio of reservoir volume to drainage-basin area, shoreline configuration, and mean depth. The watershed land-use intensity index is based on road proximity and upland watershed land-use intensity. Water quality can be given a COD level. All six indicators are considered separately and then rated as follow: low (1), medium (2), or high (3). Five out of 30survey sites were less than 8points, 17sites were less than 11points and 8sites were less than 14points. This study suggests that the sites in the first ranking were potential areas for preservation, sites in the second ranking were potential areas for environmental friendly planning and sites in the third ranking were potential areas for residential need oriented planning. The advantage of this study is the low cost of gathering data for the development of local policy for the planning, management and protection of reservoir basin.

• 한국식품저장유통학회지
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• 제23권1호
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• pp.7-11
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• 2016

상온에서 기체로 존재하는 기존의 에틸렌 작용억제제인 1-MCP와 달리 상온에서 액상으로 존재하여 분무살포가 가능한 에틸렌 작용억제제를 개발할 목적으로 cyclopropene 유도체의 하나로서 2-decylcyclopropene-1-carboxylic acid ethyl ester(DCPE)를 합성하여 부유 단감을 대상으로 그 처리효과를 분석하였다. $4{\cdot}10^{-4}$ M의 DCPE를 수확 전에 분무살포 처리한 단감을 수확하여 45일간 저온저장한 후 상온($20^{\circ}C$)에 1주간 방치하면서 성숙 관련 지표의 변화를 조사한 결과, 에틸렌의 작용에 의해 유발되는 과육 연화의 진행이 효과적으로 지연되었으며, 그 억제 효과는 1 ppm의 1-MCP 처리와 대등한 수준이었다. 또한 DCPE는 적어도 한달간 성분 손실 없이 냉장 보관이 가능하였다. 따라서 DCPE는 단감 과실의 수확 후 과육의 연화를 지연시키는 약제로의 활용이 가능할 것으로 기대된다.

• 한국식품저장유통학회지
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• 제15권1호
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• pp.84-87
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• 2008

유전자 변형 작물은 생산성 측면에서 많은 장점이 있지만 이를 섭취할 경우 잠재적인 위험 요소들에 의해 많은 문제가 대두대고 있다. 본 연구는 저항성유전자를 이입한 배추에서 Profillin, Tubulin-${\alpha}$ (Tub-${\alpha}1$), Heat-shock protein (Bchsp 17.6) and Ubiquitin conjugating enzyme (UBE)의 발현과 이를 30일간 섭취한 마우스에서 ${\beta}$-actin(${\beta}$-act), ${\beta}$-2-microglobulin (B2m), Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and ${\beta}$-glucuronidase (Gus)의 발현 정도를 RT-PCR을 통해 알아보았다. 실험 결과 저항성유전자를 이입한 배추와 그렇지 않은 배추의 유전자 발현 패턴은 큰 차이를 보이지 앓았으며, 이를 섭취한 마우스 장기에서도 발현에 따른 큰 차이는 나타나지 않았다.