• Bulletin of the Korean Chemical Society
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• 제27권9호
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• pp.1287-1288
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• 2006

• 한국미생물학회:학술대회논문집
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• 한국미생물학회 2005년도 International Meeting of the Microbiological Society of Korea
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• pp.213.1-213
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• 2005

• 한국식물생명공학회:학술대회논문집
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• 한국식물생명공학회 2005년도 추계학술대회 및 한일 식물생명공학 심포지엄
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• pp.257-257
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• 2005

• Bulletin of the Korean Chemical Society
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• 제31권11호
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• pp.3445-3447
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• 2010

• Bulletin of the Korean Chemical Society
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• 제27권1호
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• pp.123-126
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• 2006

• Fibers and Polymers
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• 제7권4호
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• pp.352-357
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• 2006

The cotton fabrics were pretreated by sodium 2-(2,3-dibromopropionylamino)-5-(4,6-dichloro-1,3,5-triazinylamino) benzenesulfonate (DBDCBS) at alkaline condition ofroom temperature and then dyed with four disperse dyes having amino groups (C.I. Disperse Yellow 9, C.I. Disperse Red 11, C.I. Disperse Blue 56 and C.I. Disperse Violet 1) at acidic condition of high temperature. A novel hetero-bifunctional bridge compound, DBDCBS, has two reactive groups such as dichloro-striazinyl group and ${\alpha},\;{\beta}$-dibromopropionylamido group. The first has reactivity towards hydroxy group of cellulosic fiber and the second shows reactivity towards amino groups of disperse dye containing amino groups. The results indicate that it is possible to dye polyester/cotton blend at one-bath dyeing using one kind of disperse dye containing amino groups. Therefore, two kinds of dyeing methods such as two-bath process one-bath dyeing and one-bath process one-bath dyeing were investigated and their dyeabilities were compared. The differences between these two methods were negligibly small so that perfect one-bath one-step dyeing of polyester/cotton blend by one kind of disperse dye was achieved.

• 한국재료학회지
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• 제4권1호
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• pp.75-80
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• 1994

2-관능성 DGEBA-4-관능성 TGDDM 블렌드를 DDM으로 경화시킨 경호물의 굴곡 특성과 열 안정성을 혼합비에 대하여 조사하였다. 굴곡 탄성율과 유리 전이 온도는 TGDDM이 증가 될수록 증대되었고, 20-40 중량%의 TGDDM조성에서 불연속적으로 변화하는데, 이것은 이 저성 부근에서 ductile/brittle의 구조적 상변화가 일어나고 있기 때문인 것으로 추정된다. TGDDM성분이 증가될수록 최대 열분해 온도는 고온쪽으로 shift되는 경향을 보이지만, 분해에 대한 활성화 에너지는 오히려 감소했다.

• 한국염색가공학회지
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• 제19권1호
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• pp.1-11
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• 2007

Dyeing of polyester/cotton blends is usually carried out through the two-bath or one-bath two-step dyeing method using proper disperse dyes and reactive dyes for each fiber. However, the dyeing requires relatively long and complicated procedure as well as there are some problems such as lower dyeability. In the present study, new one-bath one-step dyeing process was investigated using disperse dyes having amino groups and hetero-bifunctional bridge compound(DBDCBS) including dichloro-s-triazinyl groups and ${\alpha},{\beta}$-dibromopropionylamido groups to improve the dyeability of cotton component in polyester/cotton blends. And the one-bath dyeing properties of polyester/cotton blends was evaluated by various dyeing conditions such as pH, temperature and dye concentration, The optimum dyeing condition was pH 4 and $110-120^{\circ}C$. Color fastness were relatively good because of the colvalent bond formation between DBDCBS-reacted cotton fiber and disperse dye.

• 한국미생물·생명공학회지
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• 제13권3호
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• pp.297-302
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• 1985

미생물중 urease생성능이 아주 강한 B. pasteurii의 Hind III partial digest 된 chromosomal DNA를 E. coli-B. subtilis bifunctional plasmid vector pGR 71으로 E. coli RR1 균주에 cloning 하므로써 그 urease gene을 expression시킬 수 있었다. 그러나 B. subtilis에서는 insertion DNA fragment의 deletion으로 expression되지 않았다. Cloning된 E.coli RR1 균주로부터 분리 정제한 urease gene함유 Plasmid(pGU66)의 restriction map을 작성하여 본 결과 7.1 Mdal의 insertion fragment가 삽입된 12.6Mdal의 plasmid에 Hind III, Bgl II, Xba I, Sal I등 몇 개의 cleavage site 위치를 찾을 수 있었다. Cloning된 E. coli의 urease는 periplasmic space에 많은 비율로 축적되며, 그 효소학적 성질은 donor인 B.pasteurii의 그것과 매우 유사하였다.

• Toxicological Research
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• 제23권3호
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• pp.197-205
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• 2007

Cancer metastasis is a major determinant of cancer patient mortality. Mounting evidence favors a strong positive role for $TGF-{\beta}$ in human cancer progression. The complex pattern on cross-talk of $TGF-{\beta}$ and the related other signaling pathways is an important area of investigation that will ultimately contribute to understanding of the bifunctional role of $TGF-{\beta}$ in cancer progression. This review summarizes some of the current understanding of $TGF-{\beta}$ signaling with a major focus in its contribution to the tumor cell invasion and metastasis. Five issues are addressed in this review: (1) $TGF-{\beta}$ signaling, (2) $TGF-{\beta}$ and EMT, (3) $TGF-{\beta}$ and MMP, (4) $TGF-{\beta}$ and Ras, and (5) Role of $TGF-{\beta}$ in invasion and metastasis. Due to the bifunctional cellular effects of $TGF-{\beta}$, as a tumor promoter and a tumor suppressor, more precisely defined $TGF-{\beta}$ signaling pathways need to be elucidated. According to the current literature, $TGF-{\beta}$ is clearly a major factor stimulating tumor progression through a complex spectrum of the interplay and cross-talk between various signaling molecules. Understanding the role of $TGF-{\beta}$ in invasion and metastasis will provide valuable information on establishing strategies to manipulate $TGF-{\beta}$ signaling which should be a high priority for the development of anti-metastatic therapeutics.