• 한국해양학회지
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• 제20권3호
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• pp.62-69
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• 1985

忠武灣에서 分離한 108個의 菌株에 대하여 고전적 분류방법과 수리적 분류방법을 비교하고, 균주간의 相關關係數를 구하여 유사성을 確認하였다. 수리적 분류에서는 고전적 분류와는 달리 Gram(+)와 Gram(-) 菌株가 전체 cluster에 分散되어있고, coccus와 rod가 분리되었으며, genus간의 分類는 수리적 방법과 고전적 방법사이에 連關性이 크게 나타났다. 下層에서 採取된 균주는 다른 層에 비해 균주간의 분류학적 유사성이 떨어지는 것으로 나타났다. 또한 灣 內部 (Group I)의 菌株와 外部 (Group II)의 菌株間의 거리는 각 Group內의 菌株間의 연관성보다 적은 것으로 나타났으며, 干潮時 海水에서 분리된 균주와 滿潮時 분리된 균주간에는 연관성이 적음이 확인 되었다.

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제16권10호
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• pp.990-994
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• 2010

모바일 와이맥스(Mobile WiMAX)는 계층적인 인코딩 기법을 사용하는 비디오 부호화 기술의 본질적인 특성을 고려하지 못하여 미디어의 품질을 보장하지 못하는 문제점을 가지고 있다. 이러한 문제점을 해결하기 위해 본 논문에서는 미디어 우선순위 기반의 채널 적응적인 스트리밍 기법인 PC-MCA(Priority-based Combining adaptive Modulation and Coding with ARQ)를 제안하였다 PC-MCA는 미디어 프레임의 우선순위에 따라 스케줄링을 하며, 무선 채널 상태와 미디어 프레임의 우선순위를 고려하여 변조 방식 및 부호화율, 그리고 ARQ 재전송 시간을 차등적으로 조절한다. 이를 통해 안정된 프레임 복호화를 제공함으로써, 멀티미디어 서비스 품질을 보장하였다.

• Archives of Pharmacal Research
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• 제5권1호
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• pp.17-19
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• 1982

To develop potent anitumor polysac-charides from higher hungi of Korea the alcohol precipitated polysaccharides, which were obtained from hot water extracts of shake-cultured mycelia of eight species of basidiomycetes, were subjected to antitumor screening tests, using sarcoma 180 as a tumor cell. When administered i. p, at the dose level of 20mg/kg/day for ten days into the mice which were implanted with $1{times}10^{8}$ cells of sarcoma 180 twenty-four hour before the start of polysaccharide injection, the polysaccharides of Plutcus cervinus ISA-Pc-1004, Pleurotus pulmonarius, Hydnum repandum ISA-Hr-1006, and Laccaria laccata ISA-LI-1008 respectively showed inhibition ratios of 62.0%, 51.7%, 64.8%, and 57.8%. They were selected for further study, while those of Pancillus serotina ISA-Ps-1012, Laccaria amethystina ISA-La 1001, Pholiota adiposa ISA-Pa-1010, and Lepista spISA-Ls-1007 respectively showed inhibition ratios of -9.3%, 25.3%, 27.3% and 33.0%.

• 약학회지
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• 제38권6호
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• pp.763-769
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• 1994

Bifidobacterium bifidum, one strain of medical preparation being on the market for human intestinal disorders, was sensitive to rifampicin and fluoroquinolones. If this preparation is taken with rifampicin and fluoroquinolones, its therapeutic effect can't be expected. Serial passage of B. bifidum RFR61, which was obtained by MNNG mutation method, on agar with 2-fold minimal inhibitory concentration of ofloxacin produced B. bifidum OFR9 with minimal inhibitory contentrations of fluoroquinolones up to $4{\sim}256-fold$ higher than that for the original strain. B. bifidum OFR9 produced almost the same amount of organic acid as parental strain. This strain showed growth inhibitory activity against E. coli NM522, Shigella dysenteriae ATCC9752 and E. coli 078. No inactivations of rifampicin and ofloxacin by this resistant mutant strain were found.

• 복식문화연구
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• 제17권1호
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• pp.90-104
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• 2009

If people want to project a successful personal style, hair style might play a big role as well as clothing. The purpose of this study was to observe hair behavior according to demographic variables, and to analyze correlation between desired hair image and clothing image sought. Questionnaires were distributed to 600 females aged $20s{\sim}40s$, using a convenient sampling method. Only 556 reliable questionnaires were selected for statistical analysis. Correlation r, ANOVA and Chi-square were used to analyze the data, using the SPSS program. There was a significant association between hair style and occupation. Career woman preferred roll straight perm treated hair, students preferred general perm treated hair and full time house wives preferred general wave perm treated. The medium layer cut was the most preferred cut style. People want to give different accents in hair styling with occupation and age variable. Certain desired clothing image had a high correlation with desired hair style image. Those who people want to express sexy, and bohemian image through clothing, they also want to create those image in hair styling with a high correlation(r=0.683, r=0.704).

• 청정기술
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• 제3권1호
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• pp.88-95
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• 1997

Energy required, air emission, and solid waste generation are calculated with available foreign data ad domestic status using Life Cycle Analysis in order to compare the environmental impact of beverage containers such as PET bottle, aluminum can, glass bottle, and paper pack. Glass bottles are found to be the worst acceptability when considering only recycling rate of glass cullet, however it becomme the best when the refill(reuse) rate of glass bottles is accounted into. To assess tile current and future environmental impact of beverage containers, energy required, air emission, solid waste generation of current data and recycling goals are compared. As a result of the study, recycling of each containers and the reuse of glass bottles must be increased by governmental enforcement to reduce the environmental impacts by beverage containers. Further study on this subject using detailed LCA(life cycle assessment) data should be implemented for the exact environmental and economic assessment.

• Journal of Ecology and Environment
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• 제30권1호
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• pp.69-73
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• 2007

The sources and the frequency of disturbances and the responses of shorebirds to disturbances were studied at four roosting sites on Ganghwa Island and Yeongjong Island. The mean frequency of disturbance to roosting shorebirds was 2.7 per hour. Human activities contributed to the disturbance in 65% of all cases. Disturbance frequencies in saltpans were higher than those in the upper tidal zone, fishponds and salt marshes. Response patterns of shorebirds to disturbances were associated with the source of the disturbance. Disturbance caused shorebirds to change their behavior and to reduce roosting time at their roosting sites. Four patterns of responses by roosting shorebirds to disturbance were found, including: (1) leaving the roosts, (2) changing their location within the site, (3) leaving and returning, and (4) remaining in place. In the latter three response patterns, the birds tended to remain in their initial roosting sites, in contrast with the leaving pattern, which involved departing from the roosting area. Factors affecting these response patterns were time from high tide and time of day. When the time from high tide was greater, and the time of day was later, more birds stayed at the roost. The absence of sufficient alternative roosts in the study areas forced the birds to choose between tolerating the current disturbance, or moving to distant roosts.

• The Korean Journal of Ecology
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• 제27권2호
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• pp.73-77
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• 2004

Movement of shorebirds for roosting was studied to find their response to insufficient roosting area on Ganghwa Island. It was taken from two kinds of aspects of population fluctuation and direct observation of movement from March to October in 2002. Based on the data from their weekly fluctuation and flight observation, shorebirds on Ganghwa Island moved to roosts located far away. Shorebirds feeding at southern Ganghwa Island moved to Yeongjong Island for roosting during the spring tide period. High tide count showed that the number of shorebirds on Yeongjong Island increased strikingly, while the number of birds on Ganghwa Island decreased. As the tide level increased, the number of shorebirds on Ganghwa Island decreased in the fall migrating season (r$_{s}$= -0.81, p＜0.001), whereas that on Yeongjong Island was not correlated significantly. Direct observation showed that some of the birds on the upper tidal zone of Ganghwa Island moved directly to the northern mudflat of Yeongjong Island during the flowing tide or dropped by flat zone on Seondu-ri. Insufficient coastal wetlands on Ganghwa Island induced them to move away from the island for roosting place and to endure costly flight energy expenditure. The development of wetlands on the southern Yeongjong Island would make them have no place available to roosts. Therefore this study proposes that shorebird roosts on Ganghwa Island should be created to conserve their habitat.t.

• 한국전기전자재료학회논문지
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• 제20권5호
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• pp.421-424
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• 2007

Thermal behavior of $Li_{1-x}CoO_2$ has been investigated employing DSC (Differential Scanning calorimetry) and TGA (Thermogravimetry Analyzer), and the crystal parameters were calculated from XRD (X-ray diffraction).for the commercial rectangular pouch cell(1000 mAh).The cathode materials coated over aluminium foil current collector is made up of a blend consisting of active material $LiCoO_2$(size $20\;{\mu}m$, 94 wt%), conducting material super p black (SPB, 3 wt%) and binder polyvinylidene fluoride (PVDF, 3 wt%). The anode is a mix consisting of carbon (92 wt%) and PVDF(8 wt%) coated over copper foil. The cells for the experiments were first preconditioned by cycling three times and stabilized at OCV=3.0, 3.5, 4.2, 4.35 and 4.5 V. The stabilized cathode material was used for thermal and crystal parameter investigations.

• Archives of Pharmacal Research
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• 제6권2호
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• pp.141-142
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• 1983

To find anititumor metabolites in Korean basidiomycetes, the shake-cultured mycelia of eight of the higher fungi were extracted with hot water and the extracts, after being partially purified, were subjected to in vivo antitumor test. When administered i. p. at the dose of 30mg/kg/day for ten consecutive days into the female ICR mice, which had been implanted with $1{\times}10^{6}$ / cells of sarcoma 180 twenty four hours before the first injection, the extracts of Agaricus campestris, Lyophyllum decastes, Lyophyllum ulmarium, Armillaria Tabescence and Calvatia exipuliformis respectively showed inhibition ratios of 64.1%, 65.45, 60.-%, 53.0 and 49.3%. These five species were selected for further study, whereas the extracts of Phallus impudicus, Coprinus comatus and Pholiota squarrosa whih showed the inhibition ratios of 31.2%, 33.5% and 19.0% were discontinued.