• International Journal of Fuzzy Logic and Intelligent Systems
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• 제12권2호
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• pp.149-153
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• 2012

In this paper, we introduce the concept of fuzzy almost strongly (r, s)-semicontinuous mappings on intuitionistic fuzzy topological spaces in $\check{S}$ostak's sense. The relationships among fuzzy strongly (r, s)-semicontinuous, fuzzy almost (r, s)-continuous, fuzzy almost (r, s)-semicontinuous, and fuzzy almost strongly (r, s)-semicontinuous mappings are discussed. The characterization for the fuzzy almost strongly (r, s)-semicontinuous mappings is obtained.

• Animal Systematics, Evolution and Diversity
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• 제11권2호
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• pp.207-221
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• 1995

남한해역에서 채집된 Raja속 어류를 Ishihara(1987)의 분류기준에 따라 동정한 결과 Raja(Okamejei) meerdervoortii Bleeker(오동가오리), R.(O.) acutispina Ishiyama(국명신칭:무늬홍어), R.(O.) kenojei Muller et Henle(홍어), R.(Dipturus) kwangtungensis Chu(국명신칭: 참홍어), R.(D.)pulchra Liu(눈가오리)등 5종이 확인되었다. 5종 10집단 165개체에 대한 전기영동법을 이용한 동위효소 분석 결과 13개의 효소 및 비효소성 단백질에서 24개의 유전자를 검출하고 대립인자 빈도를 산출하여 종간 비교를 실기하였다. 5종 중 R.(O.) kenojei 집단은 4집단 간 평균 S = 0.966으로 매우 가까운 유전적 근연치를 나타냈으며, R.(O.) meerdervoortii와 R.(O.) acutispina는 유전적 근연치가 S = 0.749였으며, R.(O.) kenojei와 R.(D.) kwangtungensis는 S = 0.829였으나, R.(D.) pulchra는 다른 4종과 S = 0.597의 값을 나타내어 유전적 근연관계가 제일 멀게 나타났다. R.(D.) kwangtungensis의 경우 동일 아속인 Dipturus 아속에 속하는 R.(D.) pulchra와는 유전적 근연치가 S = 0.648로 뚜렷한 차이가 있었으나, Okamejei 아속에 속하는 R.(O.) kenojei와는 S = 0.829의 가까운 유전적 근연치를 나타내어 주목된다. R.(O.) acutispina와 R.(D.) kwangtungensis는 한국 미기록종으로 동정되었다.

• Bulletin of the Korean Chemical Society
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• 제5권6호
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• pp.237-240
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• 1984

2,2'-Diaminobiphenyl platinum (II) complexes of optically active trans-1,2-diaminocyclohexane and 1,2-diaminopropane, [Pt(S,S-chxn)(dabp)]Cl2, [Pt(R,R-chxn)(dabp)]$C_{12}$, [Pt(S-pn)(dabp)]$C_{l2}$, and [Pt(R-pn)(dabp)]Cl2, where S,S-chxn and R,R-chxn are, respectively, S and R isomers of trans-1,2-diaminocyclohexane, and S-pn and R-pn are, respectively, S and R isomers of 1,2-diaminopropane, and dabp the 2,2'-diaminobipheny, have been prepared. The dabp ligand has been found to take the $=delta$ conformation in the S,S-chxn and S-pn platinum (II) complexes, while it takes the $\lambda$ conformation in the R,R-chxn and R-pn platinum (II) complexes.

• 한국동물학회지
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• 제19권3호
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• pp.113-122
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• 1976

非同時化시킨 HeLa $S_3$ 細胞에 있어 MMS에 의한 $^3 H$-Thymidine Uptake率은 MMS의 頻度증가에 따라 직선적으로 감소하며, BUdR 혹은 IUdR과 二重處理할 경우 그 감소율은 더욱 증가한다. MMS에 의한 $^3 H$-Thymidine Uptake은 thymidine 二重 處理후 얻은 同時化된 HeLa $S_3$ 細胞의 $G_2$ 時期에서 檢出된다. BUdR과 IUdR은 MMS에 의한 $^3 H$-Thymidine Uptake率을 더욱 증가시키며 IUdR은 BUdR에 비해 더효과적인 感受性 物質로 판명되었다.

• Bulletin of the Korean Chemical Society
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• 제20권11호
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• pp.1335-1339
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• 1999

The function of 5S rRNA, a constituent of a large subunit of ribosome, is not clearly known yet. To identify RNA motifs interacting with 5S rRNA, and thereby to get an insight into the function of 5S rRNA in the ribosome, a SELEX (Systematic Evolution of Ligands by Exponential Enrichment) experiment was performed. RNA molecules binding to Escherichia coli 5S rRNA were selected from a 48-mer random sequence library through 12 rounds of selection, cloned, and sequenced. Two groups of the selected RNA molecules had the consensus sequences GCGG and GUGAAA, respectively, which are present in the segment, G688 through A696, of E. coli 16S rRNA. The gel mobility shift assay showed that 5S rRNA interacted with the 16S rRNA fragment containing the GCGG and GUGAAA sequences. The enzymatic protection experiment shows that the A29CCUGA34 and G51AAGUG56 sequences of 5S rRNA and the C680AGG683 and G688CGG691 sequences of the 16S rRNA fragment are involved in the interaction between the two RNA molecules. On the basis of this observation, we suggest that 5S rRNA and 16S rRNA play a role for the association of two ribosomal subunits.

• East Asian mathematical journal
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• 제16권1호
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• pp.111-123
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• 2000

Northcott and McKerrow proved that if R is a left noetherian ring and E is an injective left R-module, then $E[x^{-1}]$ is an injective left R[xl-module. Park generalize Northcott and McKerrow's result so that if R is a left noetherian ring and E is an injective left R-module, then $E[x^{-S}]$ is an injective left $R[x^s]$-module, where S is a submonoid of N(N is the set of all natural numbers). In this paper we show $$Hom_{R[x^S]}(M[x^{-S}],\;N[x^{-S}]){\cong}Hom_R(M,\;N)[[x^S]]$$ and using the above result and this isomorphism, finally we show that $$Ext^i_{R[x^S]}(M[x^{-S}],\;N[x^{-S}]){\cong}Ext^i_R(M,\;N)[[x^S]]$$.

• The Plant Pathology Journal
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• 제30권3호
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• pp.304-309
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• 2014

The rpf genes and $colS_{XOO1207}/colR_{XOO1208}$ were known to require for virulence of Xanthomonas oryzae pv. oryzae (Xoo). In Xoo KACC10331 genome, two more colS/colR genes, $colS_{XOO3534}$ (raxH)/$colR_{XOO3535}$ (raxR) and $colS_{XOO3762}/colR_{XOO3763}$ were annotated. The $colS_{XOO3534}/colR_{XOO3535}$ were known to control AvrXa21 activity and functions of $colS_{XOO3762}/colR_{XOO3763}$ were unknown in Xoo. To characterize the relationship between rpf and colS/colR genes, expression of colS/colR genes in Rpf mutants of Xoo were analyzed with quantitative reverse transcription PCR (qRT-PCR). Expressions of all three colS/colR genes increased in the rpfF mutant in which DSF synthesis is defective. Expression of $colS_{XOO1207}/col-R_{XOO1208}$, $colS_{XOO3534}/colR_{XOO3535}$ and $colS_{XOO3762}/colR_{XOO3763}$ increased 2, 2-7, 3-13 folds respectively. Expression of $colS_{XOO3534}$ and $colS_{XOO3762}$ also increased 2-4 folds in the rpfG mutant in which the signal from DSF is no longer transferred to down-stream. Expression of the other colS/colR genes was not significantly changed in the rpfG mutant compared to the wild type. Since RpfF and RpfG are responsible for DSF synthesis and signal transfer from DSF to down-stream to regulate virulence gene expression, these results suggest that the DSF and DSF-mediated signal regulate negatively three colS/colR genes in Xoo.

• 한국약용작물학회지
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• 제12권6호
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• pp.515-518
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• 2004

약용식물로 재배되고 있는 지모를 대상으로 McFISH 기법을 이용하여 45S와 5S rDNA 유전자의 염색체상의 위치를 확인하여 물리지도를 확립하였다. 2쌍의 45S rDNA는 1번 염색체의 단완 말단과 3번 염색체의 동원체 부위에서 관찰되었고, 1번 염색체의 signal이 3번 염색체에서의 signal보다 더 강하게 나타났다. 한 쌍의 5S rDNA signal은 45S rDNA signal과 함께 3번 염색체의 동원체 부위에서 관찰되었다.

• Molecules and Cells
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• 제27권2호
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• pp.205-209
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• 2009

The loci of the 5S and 45S rRNA genes were localized on chromosomes in five species of Capsicum, namely, annuum, chacoense, frutescens, baccatum, and chinense by FISH. The 5S rDNA was localized to the distal region of one chromosome in all species observed. The number of 45S rDNA loci varied among species; one in annuum, two in chacoense and frutescens, and chinense, and four in baccatum, with the exceptions that 'CM334' of annuum had three loci and 'tabasco' of frutescens gad one locus. 'CM334'-derived BAC clones, 384B09 and 365P05, were screened with 5S rDNA as a probe, and BACs 278M03 and 262A23 were screened with 25S rDNA as a probe. Both ends of these BAC clones were sequenced. FISH with these BAC probes on pachytenes from 'CM334' plant showed one 5S rDNA locus and three 45S rDNA loci, consistent with the patterns on the somatic chromosomes. The 5S rDNA probe was also applied on extended DNA fibers to reveal that its coverage measured as long as 0.439 Mb in the pepper genome. FISH techniques applied on somatic and meiotic chromosomes and fibers have been established for chili to provide valuable information about the copy number variation of 45S rDNA and the actual physical size of the 5S rDNA in chili.

• 한국지능시스템학회논문지
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• 제18권3호
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• pp.406-411
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• 2008

In this paper, we introduce the concept of fuzzy (r, s)-pre-semicontinuous mappings on intuitionistic fuzzy topological spaces in Sostak's sense. The concepts of fuzzy (r, s)-pre-semineighborhood and fuzzy (r, s)-quasi-pre-semineighborhood are given. The characterizations for the fuzzy (r, s)-pre-semicontinuous mappings are obtained. Also, we introduce the notions of fuzzy (r, s)-pre-semiopen and fuzzy (r, s)-pre-semiclosed mappings, and then we investigate some of their characteristic properties.