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아연 결핍이 구강 점막상피조직에 미치는 영향에 관한 연구
장철성 대한구강해부학회 1977 대한구강해부학회지 Vol.1 No.1
The author observed the effect of the zinc-deficient diet (Alvares and Meuer's prescription) on the oral mucosal epithelium of the Weanling rats. The zinc deficient diets were supplied to the rats for 4 weeks. The histochemical techniques employed were alkaline phosphatase reaction, PAS reaction, Feulgen reaction, toluidine blue stain for RNA and Pearse's method for -SH and -SS groups. The results were as follows: DNA were predominantly stained in the basal cell layer. RNA were diffuseU stained in the . all layers of epithelium. Basal cell and prickle cell layer shoves intense metachromasia. Those figures were distinct in the buccal mucosa ani gingiva. PAS positive substances were increased in the each ,layer. Diffuse acid phosphatase reaction was shown in the all layers of epithelium. The reaction for -SH radicals was similar with in the control group. but the reaction for -SS radical was more intense than in the control group.
장철성,황선구,김진혁 한국유전학회 2016 Genes & Genomics Vol.38 No.8
Flowering time is an important trait associated with crop yield and quality. In a previous report, genome variation of significant DNA polymorphism was observed in the early maturing type rice mutant (EMT1) compared to that of wild type (WT). To identify quantitative trait loci (QTL) for flowering time, we constructed a linkage map of 36 InDel- and 6 SNP-markers with F2 plants derived from the cross ‘‘WT 9 EMT1’’. One potential major QTL region was detected on chromosome 6. One gene of the QTL region, Heading date 1 (Hd1), exhibited relatively high nonsynonymous substitutions in the QTL region. To evaluate reliable allele segregation related to expected Mendelian ratio, M6-3 marker developed in the Hd1 gene exhibited clear monogenic segregation (1:2:1) in heterozygous F3 plants. Both GI and Hd1 were highly induced at 56 days after sowing (DAS) in EMT1 and at 70 DAS in WT. The expression of Hd3a was significantly induced at 63 DAS, when Hd1 transcripts were slightly decreased compared with those at 56 DAS, while Hd1 was induced up to 84 DAS. These findings suggested that in EMT1, Hd1 could not suppress Hd3a under LD conditions, while OsMADS50 and LFY, which are involved in temperature responsive pathways, were significantly induced at 56 DAS, 14 days earlier than in WT.
정상택,장철성,이향미 韓國食品流通學會 2015 한국식품유통학회 학술대회 Vol.- No.하계
본 연구에서는 2001년부터 2013년까지 가을배추 재배농가의 경영효율성을 측정하고, 경영효율성에서 측정된 순수기술적 효율성과 규모 효율성의 양극화 크기를 비교하였다. 또한, 경영효율성을 결정하는 요인으로 종자/종묘비, 무기질비료비, 유기질비료비, 농약비, 대농기구상각비, 제재료비, 고용노력비 등이 어떠한 영향을 미치는지 분석하였다. 가을배추 재배농가의 비효율의 주된 원인은 규모의 문제보다는 순수기술적인 요인으로 발생하고 있는 것으로 나타났고, 순수기술적 효율성의 양극화가 지속적으로 증가하는 것으로 나타났다. 또한, 경영효율성에 무기질비료비, 유기질비료비, 농약비, 대농기구상각비, 고용노력비 등은 많이 투입될수록 경영효율성이 감소하며, 제재료비는 많이 투입될수록 경영효율성이 증가하는 것으로 나타났다. 이는 가을배추 재배농가는 규모보다는 순수기술적 요인에 따른 경영효율성 제고가 가능하며, 경영효율성이 낮은 가을배추 재배농가 그룹에 대한 비효율적 요인들에 대한 적절한 컨트롤이 필요함을 시사하였다.