• 원예과학기술지
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• 제30권5호
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• pp.568-572
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• 2012

효율적인 교배를 위해서는 모본 또는 부본으로 사용하게 될 개체의 배수성 검정이 선행되어야 한다. 이에 본 연구에서는 국내 장미 신품종 육성 프로그램에 이용되고 있는 장미 7품종의 FISH 핵형분석을 통하여 배수성을 확인하고 이를 육종에 있어서 기초 자료로 이용하고자 수행되었다. 배수성 검경 결과, 7품종 모두 4배체(2n = 4x = 28)인 것으로 관찰되었다. FISH 핵형분석 결과, 45S rDNA는 4개의 signal이 7번 염색체 단완의 말단부위에서 관찰되었다. 염색체의 길이 관찰 결과, '알렉산드라'는 $1.67-2.67{\mu}m$, '프로이트'는 $1.40-2.04{\mu}m$, '리틀실버'는 $1.64-2.24{\mu}m$, '테레사'는 $1.69-2.26{\mu}m$, '티네케'는 $1.70-2.65{\mu}m$, '비탈'은 $1.35-2.08{\mu}m$, '옐로우미미'는 $1.39-2.04{\mu}m$로 관찰되었다. 염색체 전체 길이의 합은 프로이트 품종이 $11.23{\mu}m$ 로 가장 작았으며 알렉산드라 품종이 $15.05{\mu}m$로 가장 크게 관찰되었다. 염색체의 조성은 중부동원체형, 차중부동원체형, 차단부동원체형으로 구성되었으나 차단부염색체는 관찰되지 않았다.

• 한국식품영양학회지
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• 제35권4호
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• pp.259-267
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• 2022

The purpose of this study was to evaluate the antioxidative activities of jeolpyun containing Cnidium officinale M extract (2%, 4%, 6%, 8%) by total polyphenol contents, electron donating ability on 2,2-diphenyl-1-picrylhydrazyl (DPPH), scavenging ability of superoxide anion radical and decomposing ability of hydrogen peroxide. In chromaticity analysis, the brightness significantly decreased with increasing Cnidium officinale M extract content. Jeolpyun containing 8% Cnidium officinale M extract revealing the highest value for the redness and the yellowness, 1.07, 12.70, respectively. The total polyphenol contents of jeolpyun containing 8% Cnidium officinale M extract were the highest content of 4,213 ㎍ gallic acid equivalent (GAE)/mL. The total polyphenol contents revealed significant difference (p<0.05). Jeolpyun containing 8% Cnidium officinale M extract revealing the highest electron donating ability (83.55%). The electron donating abilities were significantly related at p<0.05. The scavenging abilities of superoxide anion radical for jeolpyun containing 4% Cnidium officinale M extract revealed the highest ability (0.01676). There was no significant difference. The hydrogen peroxide decomposing ability for jeolpyun containing 8% Cnidium officinale M extract revealed the most hydrogen peroxide decomposing ability (-0.193) and the hydrogen peroxide decomposing ability revealed a significant difference (p<0.05).

• Structural Engineering and Mechanics
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• 제53권1호
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• pp.73-87
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• 2015

In case of aircraft impact on nuclear containment structures, the initial kinetic energy of the aircraft is transferred and absorbed by the outer containment, may causing either complete or partial failure of containment structure. In the present study safety analysis of BWR Mark III type containment has been performed. The total height of containment is 67 m. It has a circular wall with monolithic dome of 21m diameter. Crash analysis has been performed for fighter jet Phantom F4. A normal hit at the crown of containment dome has been considered. Numerical simulations have been carried out using finite element code ABAQUS/Explicit. Concrete Damage Plasticity model have been incorporated to simulate the behaviour of concrete at high strain rate, while Johnson-Cook elasto-visco model of ductile metals have been used for steel reinforcement. Maximum deformation in the containment building has reported as 33.35 mm against crash of Phantom F4. Deformations in concrete and reinforcements have been localised to the impact region. Moreover, no significant global damage has been observed in structure. It may be concluded from the present study that at higher velocity of aircraft perforation of the structure may happen.

• Journal of Information Processing Systems
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• 제1권1호
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• pp.62-69
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• 2005

This paper presents a queuing analysis model of a PC-based software router supporting IPv6-IPv4 translation for residential gateway. The proposed models are M/G/1/K or MMPP-2/G/1/K by arrival process of the software PC router. M/G/1/K is a model of normal traffic and MMPP-2/G/1/K is a model of burst traffic. In M/G/1/K, the arriving process is assumed to be a Poisson process, which is independent and identically distributed. In MMPP-2/G/1/K, the arriving process is assumed to be two-state Markov Modulated Poisson Process (MMPP) which is changed from one state to another state with intensity. The service time distribution is general distribution and the service discipline of the server is processor sharing. Also, the total number of packets that can be processed at one time is limited to K. We obtain performance metrics of PC-based software router for residential gateway such as system sojourn time blocking probability and throughput based on the proposed model. Compared to other models, our model is simpler and it is easier to estimate model parameters. Validation results show that the model estimates the performance of the target system.

• Natural Product Sciences
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• 제4권4호
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• pp.245-252
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• 1998

The unique sulphated phenolics, gallic acid 3-methyl ether 5-potassium sulphate, isoferulic acid 3-potassium sulphate, and ellagic acid 4,4'-dimethyl ether 3-potassium sulphate have been isolated from the flowers of Tamarix amplexicaulis Ehrenb. (Tamaricaceae). The hitherto unknown natural phenolic acid, gallic acid 3-methyl ether, together with the known phenolic, gallic acid, gallic acid 4-methyl ether, isoferulic acid, ferulic acid, ellagic acid, and ellagic acid 4,4'-dimethyl ether have been also separated and characterized. The structures were established by conventional methods, including electrophoretic analysis and confirmed by ESI-MS, $^1H-\;and\;^{13}C-NMR$.

• 패션비즈니스
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• 제8권6호
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• pp.90-102
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• 2004

The purpose of this research is to identify the phases of the fashion merchandising process and the range of the fashion designer's work as well as performing degree at each stage according to the brand types of domestic women's apparel. The preliminary research was conducted with the chief designers of five woman's apparel manufactures located in Seoul and the questionnaires were collected from 192 fashion designers. They were measured by the five point Likert-type scales. For a data analysis, the Pearson's Correlation, ANOVA, Sheffe Test, MANOVA were used with SPSS V. 11.0. The results are as follows; 1. The steps which fashion designers of domestic apparel brand take in fashion merchandising process have been identified in 7 stages- Environment Information, Target Market Planning, Design Planning, Design Development, Price Settlement, Presentation & Line Release, Production. 2. The task achievement level of fashion designers in fashion merchandising process differs in brand types as well as in fashion merchandising stages. In NB, the designer's work was conducted in order of Design Planning(M=4.58)$\to$Presentation & Line release(M=4.31)$\to$ Environment Information(M=3.83)$\to$Target Market Planning(M=3.13). In DB, in order of Price Settlement (M=4.80)$\to$Production(M=4.33)$\to$Design Development(M=4.27)$\to$Design Planning(M=3.77)$\to$Presentation & Line release(M=3.20)$\to$Environment Information (M2.70). In GB, in order of Production(M=4.38)$\to$Design Planning(M=4.22)$\to$Price Settlement(M4.16)$\to$Environment Information(M=3.83)$\to$Merchandising Target Market (M=3.72)$\to$Design Development(M=3.65). 3. Considering the other factors such as sales, the amount of owning shops, item amounts that are related to the company size, this study shows that only the brand type affects designer's task achievement.

• 핵의학기술
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• 제16권1호
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• pp.76-79
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• 2012

Purpose: This study was to evaluate usefulness of $^{99m}Tc$-MIBI scintimammography for dense breast by comparing concordance in test results between Tc-99m MIBI scintimammography and mammography whose effect was proved the most as an imaging tool depending on breast density and at the same time by examining limitation on evaluation depending on density of breast tissue. [Materials and Methods] In the period from December 2010 to July 2011, this study targeted 150 patients who took both of $^{99m}Tc$-MIBI scintimammography and mammography conducted by using breast gamma camera in this hospital. Breast density was classified to the four levels of pattern 1~4 based on the results of mammography. $^{99m}Tc$-MIBI scintimammography was conducted with the LCC, the RCC, the LMLO, and the RML one minute after intravenous injection of 99mTc-MIBI 7400 MBq (20 mCi) while analysis was made for concordance in test results of $^{99m}Tc$-MIBI scintimammography and mammography. [Results] Among the 150 patients, pattern 1 was found in 3 patients, pattern 2 in 44 patients, pattern 3 in 61 patients, and pattern 4 in 37 patients. There were 5 patients who showed the case where it was impossible to determine density of breast tissue due to foreign body inserted to breast. The concordance ratio of the results between $^{99m}Tc$-MIBI scintimammography and mammography was 95.5% for pattern 2, 95.1% for pattern 3 and 94.6% for pattern 4. This demonstrated that the concordance rate decreased according to the increase in breast density. [Conclusion] When there was limitation on evaluation of breast specific gamma imaging test results due to increased intake in breast tissue or surgical site, the concordance rate was 6.8% for pattern 2, 16.3% for pattern 3 and 18.9% for pattern 4. This demonstrated that the degree of limitation on evaluation of breast specific gamma imaging test results increased according to the increase in breast density.

• 한국재료학회:학술대회논문집
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• 한국재료학회 1998년도 IUMRS-ICEM ABSTRACT BOOK
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• pp.113.4-113
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• 1998

• Animal cells and systems
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• 제4권2호
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• pp.141-144
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• 2000

Effects of deamido-$\textrm{NAD}^{+}$on self-splicing of primary transcripts of the phage T4 thymidylate synthase gene (td) was investigated. The self-splicing was not affected by deamido-$\textrm{NAD}^{+}$- at concentrations up to 2 mM. However, it began to decrease at 5 mM and the formation of splicing products such as the linear intron, intron-exon 2 and exon 1-exon 2, was slightly reduced. At 20 mM the self-splicing activity was almost completely abolished. This analog of the coenzyme $\textrm{NAD}^{+}$- inhibits the self-splicing of td intron RNA although it does not possess a guanidine group in its structure. The analysis of inhibitory concentrations and structural examination suggests that the key structural features of deamido-$\textrm{NAD}^{+}$ responsible for the inhibition of splicing may be the ADP-ribose moiety.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2001년도 추계종합학술대회
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• pp.684-687
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• 2001

본 논문에서는 이동통신 시스템에서 성능 열화의 주요 원인인 주파수 선택성 페이딩과 전자기기에서 발생하는 임펄간 간섭 환경에서 DS/CDMA 시스템의 성능 개선을 정량적으로 분석하였다 시스템으로 고려한 변식은 비동기식 MFSK와 MDPSK를 이용한 MFSK-MBPSK 결합변조 방식이다. 분석 결과, 선택성 페이딩에서 합성변조 시스템에 대하여 E$_{b}$/Nn$_{o}$ =20일 때를 기준으로 한 경우, M$_{f}$ =4, M$_{p}$=2인 경우가 가장 성능이 좋았으며, 그 다음으로 M$_{f}$ =2, M$_{p}$=4인 경우, 그리고 M$_{f}$ =4, M$_{p}$=4인 순서대로 오율 성능이 좋았다. 그리고 MRC 다이버시티 기법 및 부호화 기법을 채용한 경우 효과적으로 시스템 성능의 열화를 보상할 수 있었다. 또한, 합성변조기법을 사용함으로써 강한 임펄스 환경에서도 만족할 만한 시스템 성능을 얻을 수 있었다.