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꽃게, Portunus trituberculatus (Miers)의 탈피 과정 중 유전자 발현패턴
황채호 전남대학교 수산과학연구소 2015 수산과학연구소논문집 Vol.23 No.-
This study was carried out to investigated the gene expression pattern of blue crab during molting stages. Three types (soft, medium, hard shells) of blue crabs were divided by using digital durometer. Total RNAs were isolated using Trizol solution from the blue crabs. 14,370 EST clones in the NCBI gene database were screened using BLAST for molting, and then the selected probes (13,504 genes) were prepared for microarray plate consisting of 60mer oligonucleotide. After a series of processing on microarray, the resultant images were scanned and quantified. The data were calibrated by using LOWESS nomalization, and the three data were compared one another for gene expression pattern in blue crab during molting stages. The result showed that increased expressed genes were chitin binding peritrophin-a domain, antibicrobial peptide hyastatin, and arasin-like protein in the softened individuals, while decreased expressed genes were c-type lectin domain family 2 member a-like, prophenoloxidase activating factor, and hemocyte transglutaminase. Moreover, it was confirmed of gene expression changes on cuticle constructing protein depending on the hardness, and immune system activation during molting stages.
카올린으로부터 고분자 젤법에 의한 알루미나 나노입자의 마이크로파 합성
박성수,황채호,김지경,김동현,이상근,박희찬,Park, Seong-Soo,Hwang, Chae-Ho,Kim, Ji-Kyung,Kim, Dong-Hyun,Lee, Sang-Gun,Park, Hee-Chan 한국세라믹학회 2004 한국세라믹학회지 Vol.41 No.9
본 연구에서는 재래식 및 마이크로파 polyacrylamide(PAA) 겔법을 사용하여 카올린에서 추출된 황산 알루미늄 수용액으로부터 육각 판상형의 $\alpha$-Al$_2$O$_3$ 나노 입자들을 성공적으로 합성하였다. 재래식 PAA 겔법에 비하여 마이크로파 PAA 겔 법에서는 상대적으로 겔화 시간은 짧으며, 합성수율은 상대적으로 높았다. 재래식 및 마이크로파 시료들에서 황산 알루미늄의 농도 변화에 따라 나노 입자들의 크기는 거의 변하지 않지만, 가교제의 농도가 증가함에 따라 나노 입자들의 크기는 작아졌다. 가교제의 농도가 0.01M 이상인 조건에서는 재래식 시료들에 비하여 마이크로파 시료들에서 나노 입자들의 크기는 상대적으로 컸다. Hexagonal sheet typed $\alpha$-Al$_2$O$_3$ nano particles were synthesized successfully at various conditions with the aluminum sulfate solution extracted from kaolin through the conventional and microwave assisted polyacrylamide (PAA) gel methods. Shorter gel time and higher yield were obtained in the microwave assisted PAA gel method, compared to conventional method. the size of nano particles was not changed by increasing the concentration of aluminum sulfate, but decreased with increasing the concentration of cross-linking agent in both the conventional and microwave samples. Above 0.01M concentration of cross-linking agent, the sizes of nano particles in the microwave samples were relatively larger than those in the conventional samples.