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자궁경부염, 선암 및 선편평세포암에서의 Secretory Component의 출현도
이남규,배도환 중앙대학교 의과대학 의과학연구소 1984 中央醫大誌 Vol.9 No.3
To observe correlation between morphological differentiation and secretory component in the carcinoma cells, immunohistochemical study was carried out with 10 cases of chronic cervicitis, 27 cases of adenocarcinoma and 10 cases of adenosquamous cell carcinoma of the uterine cervix. The results were as follows: 1. The columnar cells of uterine endocervix showed mild to moderate reaction of secretory component especially at the squamocolummar juntion and mild reactions in the stromal glandular epithelium. Mucin was negative. 2. The adenocarcinoma showed mild to moderate reaction of secretory component in the cell surface and cytoplasm of tubular type by 4 cases and 15 cases out of 19 cases. Intensity stain reaction in the adenocarcinoma increased more than chronic cervicitis. Tumor cells of papillary type and poorly differentiated cells were negative or weakly reactive. Mucin was negative. 3. In the adenosquamous cell carcinoma were seen similar reaction in respect to the pure type of adenocarcinoma. Squamous cell component was negative. 4. Therefore, secretory component was moderate to markedly stained in the well differentiated tubular adenocarcinoma cells more than in papillary of poorly differentiated cells. Close correlation between amount of secretory component and morphological differentiation of carcinoma cells was suggested.
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이근숙,배도규 경북대학교 농업과학기술연구소 2008 慶北大農學誌 Vol.26 No.-
Pad-dry-cure 방식으로 ethylene cyanohydrin을 이용하여 견직물을 acrylonitrile화 시킬때 건조 시간, curing 온도 및 시간, ethylene cyanohydrin처리 농도, ZnCl₂처리 농도 등 조건 변화에 따른 변화와 반응양식을 규명하고자 하였다. 가공된 견직물의 FT-IR과 DSC 분석을 통하여 다음과 같은 결과를 얻었다. Curing을 150 ℃에서 2분, ethylene cyano hydrin 처리농도 5%, ZnCl₂처리농도 0.1%, 건조 온도를 80 ℃로 하여 건조 시간 경과에 따른 견직물의 FT-IR 분석 결과, 건조 시간 경과에 따라 -0H(3,450cm^(-1)) 특성 peak가 전부 장파장 쪽으로 shift 되어 나타 났고, random coil에 의 한 amide peak(1,663cm^(-1))는 단파장 쪽으로 shift되어 β-sheet peak(1,635cm^(-1))와 중복되어 나타났다. 건조를 8℃에서 3분, curing을 110℃에서 2.5분, ZnCl₂농도를 0.1%로 하여 eylene cyanohydhn처리 농도에 따른 가공 견직물의 FT-IR 분석에서 -OH(3,450cm^(-1))특성 peak에서 변화가 나타나 견직물의 -OH기가 반응에 관여하고 있는 것을 알 수 있었다. 위와 같은 조건으로 가공된 견직물의 DSC 분석에서 eylene cyanohydnn처리에 의해 견직물의 열분해 온도는 무처리의 311'C에서 대략 320 "C로 상승하는 것으로 나타났다. 건조를 80'C에서 3분, curing을 110'C에서 2.5분, ethylene cyanohydrin 처리농도 5%로 하여 ZnCl₂처리 농도에 따른 가공 견직물의 FT-IR 분석에서는 촉매 처리농도 0.8%일 경 우를 제외하고는 -OH(3,450cm^(-1))특성 peak에서 대부분 무처리와 비슷한 결과를 보여주고 있으나, 0.8%의 경우에는peak에 큰 변화를 나타냈다. 같은 조건에서 가공된 견직물의 DSC 분석에서, ethylene cyanohydhn 처리에 의해 견직물의 열분해 온도는 촉매농도와는 관계없이 무처리(311'C)에 비해 가공 견직물(대략 320'C)의 열분해 온도가 상승점을 알 수 있었다. 건조를 80 "C에서 70초, eylene cyanohydrm처 리 농도 5%, ZnCl₂처리농도 0.8%, Curing시간을 2.5분으로 하고 curing 온도를 각각 110, 120, 130, 140, 150, 160 ℃로 변화시켜 가공한 견직물의 FT-IR의 분석 결과, curing 온도 110, 150, 160℃에서 -OH특성 peak의 변화가 크게 나타났다. 같은 조건으로 가공한 견직물의 DSC분석에서는 ethylene cyanohydrin 처리에 의한 견직물의 열분해 온도는 curing 온도에 상관없이 미처리구(311℃)에 비해 전부 열분해 온도(대략 320℃)가 상승함을 알 수 있었다. In this paper, when the silk fabric was modified by ethylene cyanohydrine, the reaction mechanism between both was studied at various treatment conditions such as curing temperatures and times, ethylene cyanohydrin concentrations and ZnCl₂concentrations. Through the FT-IR and DSC analyses of the treated silk fabrics, we found the results as follows : It was observed in FT-IR analysis of the treated silk fabrics that the -OH characteristic peak(3,450 cm^(-1))position and shape were all changed when drying and curing treatment conditions were at 80℃ for 3 minute and 110℃ for 2.5 minute, and the concentration of the ZnCl₂ was 0.1%. It indicated that the -OH group of the silk participated in the reaction between the silk fabric and ethylene cyanohydrin . From the DSC analysis, it was found that the pyrolysis temperatures of the treated silk fabrics by ethylene cyanohydrin which was processed in the same condition, were all increased from 311℃ to ab. 320 ℃. From the FT-IR analyses of the silk fabrics treated by ethylene cyanohydrin at the various concentrations of ZnCl₂, it was found that the -OH characteristic peaks(3,450 cm^(-1)) were similar to the nontreated one except that of the fabric treated at the ZnCl₂conconcentration of 0.8% when drying and curing treatment conditions were at 80℃ for 3minute and 110℃ for 2.5 minute, and the concentration of the ethylene cyanohydrin was 5%. In the case of the ZnCl₂ concentration of 0.8% soultion, a lot of change were observed in peak. From the DSC analysis of the treated silk fabrics which was processed in the same condition, it was showed that the pyrolysis temperatures of treated silk fabric were all increased from 311℃ to ab. 320℃, which was no relation with the concentration of ZnCl₂.
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Oxime Generation of Silk Fibers by Hydroxylammonium choride Treatment
Bae, Do Gyu 한국잠사학회 1999 한국잠사곤충학회지 Vol.41 No.2
This study was aimed to explain the essence of Hydroxylammonium hydrochloride(H.A.) effect on degummed silk fiber for increasing the colour acceptor sites due to oxime generating reaction. H.A. in agueous solution causes to increase the amount of [H+] and reduce pH values as the concentration of H.A. increases. The rate of [H+] adsorption of silk fiber in acidic solution differs on the basis of solution pH and shows a specific uptake in each pH, the lower the pH of solution, the higher the amount of [H+] adsorption. The pH of solution after treating of silk fiber in H.A. and HCI, showed more remaining [H+] in H.A. solution due to [H+] releasing under the procedure of oxime production. Also it was revealed that in higher concentration of H.A. the reaction for oxime fixation on silk fiber carried out stronger and as a result the bigger gap with acid uptake curve appeared. FT-IR analysis of silk fiber treated with H.A. revealed the crating of intermolecular H-bond at the 2,981-2,930 cm-1 , which was not appreaed for nontreated silk fibers and shows H-bond between N-OH group in one chain and C=0 group in another chain of silk protein. Colourimetry of dyed silk fiber after H.A. treatment showed that the silk fiber treated with the high concentration of R.A. compare to low concentration, absorbed more dyeing molecules and so showed less percentage of whiteness.
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Yoon Nam Jo,Do Gyu Bae,In Chul Um 한국응용곤충학회 2013 한국응용곤충학회 학술대회논문집 Vol.2013 No.10
In this study, silk sericin solutions and films were prepared with different solvents: formic acid and water. Also, silk sericin film from aqueous solution was prepared at different casting temperature. Regardless of solvent type, silk sericin solutions showed a shear thinning implying highly molecular entangled state of silk sericin. Silk sericin aqueous solution showed a higher turbidity than that of formic acid solution. Silk sericin aqueous solution showed shorter gelation time than formic acid. FTIR results showed β-sheet crystallization of silk sericin was affected by casting solvent and temperature. Silk sericin film from aqueous solution showed more β-sheet conformation as the casting temperature was decreased. Silk sericin film from formic acid showed higher crystallinity index than silk sericin films cast from aqueous solution. XRD diffraction measurement showed similar results to those of FTIR. In case of mechanical properties, tensile strength of sericin film from formic acid was higher than sericin films from aqueous solution.
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Enzymatic hydrolysis of insoluble silk sericin by Alcalase
Jung, Hye Young,Bae, Do Gyu 한국잠사학회 2000 한국잠사곤충학회지 Vol.42 No.1
This study was undertaken to figure out the effects of hydrolysis conditions on the solubility of insoluble sericin, molecular weight distribution and thermal characteristics of hydrolysates in enzymatic hydrolysis by Alcalase 2.5 L. It was indicated that the optimum treatment temperature and pH for the insolucle sericin were 50°C and 1). respectively. When the insoluble sericin was hydrolyzed with a vatious treatment conditions. the solubility of all hydrolysates were represented above 85% at given conditions. As the enzyme concentration increased. As the treatment time increased, the solubility increased roughly, but the solubility was also increased. It was showed in the molecular weihg distribution of hydrolysates treated various enzyme concentrations and treatment times that when enzyme concentration were 0.5, 2, 3%, the peaks of the distribution curve were shifted to left side which meant low molecular weight and was distributed much quantity with treatment times. When enzyme concentration was 1% and treatment time was below 4hr., the peak was shifted to left side, but treatment time was 6hr. the peak were shifted to right side. When enzyme concentration was 5% and treatment time was below 2hr.. the peaks were shifted to right side. but treatment time was above 4hr. the peak was shifted to left side. The number-average molecular weight were distributed from 300 to 800 and thise were decreased when treatment time was up to 4hr., but increased a little when treatment time was 6hr. It was showed in the DSC curves of hydorolysates depending on treatment times had a tendency to shift to higher temperature. But, when the treatment time was 6hr.. the peak was shifted to lower temperature comparing another hydrolysates.
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