덴드로비움의 화아형성과 환원당 및 지방산함량 변화

蔡洙天 公州大學校 資源科學硏究所 1998 資源科學硏究論文集 Vol.6 No.-

Dry weight and percentage of dry matter increased after the occurrence of flag leaf. In this case, free sugar contents were the greatest in September when flag leaf occurred and slowly decreased afterSeptember while nob-free sugar increased vice versa. According to the analyses of fatty acids in Dendrobium stem, linoleic acid was the highest whereas myristic acid wasthe least. Content of pentadecanoic acid increased continuously after occurrence of flag leaf but content of oleic acid was high on September when flag leaf occurred and then decreased gradually, speculating that it may have something to do with flower bud formation.

다목적 계획법을 활용한 김해와 부산지역 절화생산 농가의 영업계획 수립에 관한 연구

채수천,차재호,손기철 건국대학교 생명과학연구원 1994 생명과학지 Vol.1 No.-

본 연구는 절화 생산농가의 경영실태를 파악하고 경영진단을 위한 제 지표를 작성하고 주어진 가용 자원조건하에서 농가 gross margin의 극대화와 농번기 고용노동의 극소화를 동시에 얻을 수 있는 영농 계획수립 대안을 제시해 보고자 다목적 계획법(Multiobjective Programming)분석을 시도하였다. 본 연구의 기초가 되는 자료의 조사는 부산, 김해지역의 18개 절화 전업농가를 대상으로 하였으며, 그 결과를 요약하면 다음과 같다. 1) 조사농가의 호당 평균 경지면적은 1,550평이었으며 그중 75.7%는 임대경지로서 매우 영세하였고 호당 자가 노동력은 2.4인이였으며 고용 노동력은 1.7인이었다. 2) 재배현황은 Carmation, 장미, 안개초, Gerbera, 국화, Gladiolus, Iris, 금어초, Freesia 등의 9작목에 21개의 작부형태였다. 3) 작목별 노동 투하시간은 장미가 1,578시간으로 가장 많았으며, 글라디올러스 Ⅲ가 296시간으로 가장 적었다. 이익계수는 장미가 7,748천원으로 가장 높았고 다음은 Carnation, 안개초의 순이었다. 4) 다목적 계획 수립 기법을 이용한 이익의 극대화와 농번기 노동력의 최소화를 동시에 만족시켜주는 해결책으로는 위험을 선호하는 형(A, E 대안), 위험을 기피하는 형 (B대안), 중립적인 형(D대안)의 4가지 형태의 대안으로 나타났다. This case study is to investigate a real management condition of cut flower production farm houses and then to make indices for economic analysis, and on the basis of that, to generate a few possible alternatives for farmer's decision-making from problems involving conflicting goals which were related to maximize total gross margin and to minimize labour requirements in labour peak season such as April by multiobjective programming using NISE method. 18 farms located in Kimhae and Pusan area were selected as sample farms and surveyed for analysis. The results were as follows; Average farm area per farm house surveyed was 1,550 pyeong and 75.7% of area was leased, and self labour power and employment labour power per farm house was 2.4 and 1.7 persons, respectively. 9 crops such as carnation, rose, gypsophila, gerbera, chrysanthemum, gladiolus, iris, snapdragon and freesia were presently cultivated as 21 cropping patterns. Labour requirement was the largest for rose by 1,578 hours, and benefit coefficient was the largest for rose by 7,748 thousand won per 100 pyeong and followed by carnation and gypsophila. The alternatives of possible policies for cut flower production were found to be A and B as aggressive policies and C as a moderate policy, finally B as a conservative policy.

기관내 삽관시 Slow induction과 Fentanyl 정주가 심혈역학적 변화에 미치는 영향

윤재천,채종한,조남수,정종달,김용일 朝鮮大學校 附設 醫學硏究所 1991 The Medical Journal of Chosun University Vol.16 No.2

Tracheal intubation is accompanied by varying degrees of sympathetic stimulation as reflected by increases in blood pressure and heart rate. Several clinical trials to reduce these effects by deepening anesthesia, using pharmacologic agents such as alpha and beta blockers,calcium channel blockers, fentanyl and lidocaine have been reported. To evaluate the effects of slow induction and fentanyl on responses of cardiovascular system induced by endotracheal intubation, we administered thiopental sodium 5㎎/㎏ (group Ⅰ), slow induction with O_(2)-N_(2)O-halothane( group Ⅱ), fentanyl 3uμ/㎏ with thiopental sodium 4㎎/㎏(group Ⅲ) for induction of anesthesia, and measured systolic and diastolic pressures, and heart rates before induction, and at 1,2,3,4, and 5 minutes after intubation. 1) In group Ⅰ, intubation caused a significant increase in systolic pressure (10%) diastolic pressure (15%) and heart rate (28%) at 1 min. after intubation but each parameter returned to the normal level within 5 min. 2) In group Ⅱ, increases in systolic pressure (12%), diastolic pressure (22%) and heart rate (23%) at 1 min. after intubation but there were no significant differences compared to group Ⅰ. 3) In group Ⅲ, the increase in systolic and diastolic pressure induced by intubation was abolished by fentanyl and showed significant decrease compared to group Ⅱ, increase in heart rate (4%) at 1 min. after intubation but were of no significance, and showed significant decrease compared to group Ⅱ but not at 3 min., 4 min. after intubation. These results suggested that a low dose of fentanyl significantly blunts postintubation hypertenion and tachycardia when used as an adjunct to thiopental sodium.

日本 오가사와라諸島 國立公園의 植生復元에 關한 硏究

蔡洙天,鄭龍文 公州大學校 資源科學硏究所 1998 資源科學硏究論文集 Vol.6 No.-

In order to restore the vegetation that was demolished by imported goats in Ogasawara Islands, the damaged States in Mukogima, Nakoudogima, Yomegima and Nishigima island that were badly damaged among Ogasawara Islands were investigated, and the removal method of goats, the counterplan for restoration of vegetation and restoration technique for vegetation were inquired. The results obtained are as follows; 1. The temperature and amount of pricipitation of the yearly mean in Ogasawara were 23℃ and 1229.1mm respectively, and this Islands were belonged to the oceanic subtropical zone. 2. The main vegetation in four island were Pisonia umbellifera,Callicarpa subpubescens, Ochrosia nakaiana, Livistonia chinensis, Drypetes integerrima, Pandanus boninensis, Terenna subsessilis, Sporobolus diander, Oplismenus compositus, Gramineae spp. etc. 3. The vegetation and top soil in four islands were extinct by eating and over-walks of goats and severely washed out by rainfall and wind. 4. The number of goats were increased yearly, and were 766 in Mukogima, 189 in Nakoudogoma, 92 in Yomegima and 41 in Nishigima in 1997, respectively. 5. To control goats and to restore the vegetation, the fence was set up in the place was badly damaged by goats. 6. Within the fence to control goats, sand bag method to soil erosion, small dam, vegetation mat method and seed spray method were treated with.

희박연소 상태에서 프로필렌 환원제에 의한 Pt-TiO_2 2단 촉매의 NOx 제거 특성

정태섭,채수천 全北大學校 附設 都市및環境硏究所 1999 都市 및 環境硏究 Vol.14 No.1

Investigation was carried out Lean burn de-NOx properties of Pt-TiO_2 dual-bed catalyst by propylene in order to get the high de NOx activity and the wide temperature window under coexistence of SO_2 and H_2O. Only metal oxide catalyst themselves had NOx conversion activity at high temperature over 400℃. Metal oxide catalysts had maximum conversion activity that CuO had 20% at low temperature of 300℃, and Al_2O_3 had 84% at high temperature of 550℃. In case of metal oxide catalysts impregnated with 0.55wt% platinum ion, Pt-ZrO_2 had max conversion activity 46% at low temperature of 300℃. Almost of catalysts impregnated with various metal ion based on titania and alumina had max coversion activity at high temperature over 500℃. Dual-bed catalysts set that Pt-TiO_2 catalyst put entrance and metal oxides put to exit, gave the results of high NOx conversion activity at wide temperature window. 0.55wt%Pt-TiO_2 +Al_2O_3 catalyst and 0.55wt%Pt-TiO_2+5wt%Cu-ZSM-5 catalyst had high NOx conversion activity of 56% and 46%, and kept up the activity over 50% at high temperature zone. Under the coexistence of SO_2 and H_2O, 0.55wt%Pt-TiO_2 +ZrO_2 catalyst had most little diminution of NOx conversion activity. 0.55wt%Pt-TiO_2 +Al_2O_3 catalyst showed the vest correlation between NOx conversion activities and propylene conversion rates as R^2=0.7097.

包裝 필름 種類와 LCA條件劑의 組合處理가 切花 카네이션(Dianthus caryopyllus L.cv. Castellaro)의 品質과 壽命延長에 미치는 影響

柳廷娥,蔡洙天,孫基哲 建國大學校 附設 農業資源開發硏究所 1993 農資源開發論集 Vol.18 No.-

포장 필름 種類와 LCA條件劑의 組合處理가 카네이션 'Castellaro' 품종의 包裝除去 후의 品質과 保存溶液 하에서의 品質에 미치는 효과를 조사한바, 다음과 같은 결과를 얻었다. 1) 카네이션은 필름 포장을 제거 후 수돗물 處理에서 6번 처리구((NO. 20 film+KMnO₂)는 대조구에 비해 花徑을 크게 하는 효과를 나타냈으며, 2∼3일 정도의 壽命延長 效果가 있었다. 2) 필름 포장을 제거 후 保存 溶液의 處理는 처리간에 별 차이가 없으며, 수도물 처리에 비해 공히 5∼6일간의 壽命延長 효과를 나타냈다. 3) 카네이션의 운송시 箱子內 LCA 조건제 처리는 切花의 상태 및 壽命延長에 큰 효과를 미치지 못하는 것으로 나타났다. 4) 카네이션의 포장내 적정 CO₂ 조성은 7∼20%, O₂ 조성은 0.5∼1% 이상인 것으로 나타났으며, LCA條件劑 없이도 적절한 拘才를 사용할 경우 鮮度維持에 상당한 효과를 얻을 수 있을 것으로 생각된다. This experiment was conducted to study the influence of various films and LCA(Low-ethylene controlled atmosphere) conditioner on the quality and vase life of cut carnation(Dianthus caryophllus L. cv. Castellaro). The results were summarized as follows. 1) When tap water was used as a basal solution after removal of film bag, the treatment of 6(NO. 20 film+KMnO₄) increased the flower diameter of carnation effectively and extended vase life over 2∼3 days when compared to the control. 2) There were no significant differences between preservative solutions containing carnations which had been pretreated with different film bags. However, all treatments with preservative solutions extended vase life 5∼6 days longer than those with tap water. 3) The addition of LCA conditioner in the film bag during transportation of cut carnation had no effect on extending longevity and quality. 4) The use of film bag with a porper permeability without LCA conditioner may keep cut carnation fresh during transportation and prolong the storage life effectively. 5) The effective gas condition in film bag for the short period storage was of cut carnation 7∼20% CO₂ and O₂〉0.5∼1% in film bag.

몇 種의 熱帶産蘭種子의 無菌培養에 관한 硏究 : (Effect of Activated Charcoal, Sucrose and Plant Growth Regulator Concentration on Germination and Growth) 1.活性炭, 糖濃度, 植物生長調節劑의 濃度가 發芽와 生育에 미치는 影響

李春容,蔡洙天 公州大學校 資源科學硏究所 1993 資源科學硏究論文集 Vol.1 No.-

This study was conducted to detemine the optimal basal media, activated charcoal, sucrose and plant growth regulator of concentration far germinagion and growth of Cattleya and Dendrobium. The results obtained were summarized as follow; 1. The germingtion and growth of Cattleya were the best in the MS medium supplemented with 0.3% activated charcoal but the Dendrobium were the best in the MS medium not supplemented with activated charcoal. 2. The germination and growth of Cattleya and Dendrobium were the best in the MS medium supplemented with 3 to 5 perecnt sucroce. 3. The germination and growth of Catteya and Dendrobium were the best in the MS medium supplemented with 1.0 ppm NAA, shoot formation was the best in the basal MS medium supplemented with 10 ppm BA and 1.0 ppm NAA and root formation was the best 1.0 ppm BA and 10 ppm NAA.

Association of the Human IL-28RA Gene Polymorphisms in a Korean Population with Asthma

Chae Soo-Cheon,Park Young-Ran,Lee Yong-Chul,Yang Yun-Sik,Chung Hun-Taeg Korea Genome Organization 2006 Genomics & informatics Vol.4 No.3

IL-28RA is one of the important candidate genes for complex trait of genetic diseases, but there are only a few published results for this gene. Previously, we identified eighteen SNPs and two variation sites in the entire coding regions of IL-28RA including promoter regions, and suggested that the g.32349G>A polymorphism of IL-28RA might be associated with susceptibility to allergic rhinitis. In this study, we chose seven SNPs (g.-1193A>C, g.-30C>T, g.17654C>T, g.27798A>G, g.31265C>T, g.31911C>T and g.32349G>A) of IL-28RA, and attempted to find out whether these polymorphisms were furtherassociated with genetic predisposition of asthma. We analyzed the genotype and allele frequencies of IL-28RA polymorph isms between the asthma patients and healthy controls. We also investigated the frequencies of haplotype constructed by these SNPs between asthma patients and controls. Our results suggest that the polymorphisms of IL-28RA gene were not associated with susceptibility to asthma, and not with IgE production and eosinophil recruitment. The haplotype frequencies by these SNPs also not significantly associated between the healthy controls and asthma patients. This result indicates that the IL -2BRA polymorphisms might be not associated withasthma susceptibility.

Identification of Single Nucleotide Polymorphisms in the TNFRSF17 Gene and Their Association with Gastrointestinal Disorders

Chae, Soo-Cheon,Yu, Ji-In,Oh, Gyung-Jae,Choi, Chang-Soo,Choi, Suck-Chei,Yang, Yun-Sik,Yun, Ki-Jung Korean Society for Molecular and Cellular Biology 2010 Molecules and cells Vol.29 No.1

TNFRSF17 is preferentially expressed in mature B lymphocytes, and may be important for the development of B cells. TNFRSF17 is selected as a candidate susceptibility gene to IBD pathogenesis by our cDNA microarray analysis, and we showed the specific expression of TNFRSF17 in resting and activated $CD19^+$ cells obtained from human blood. We identified four SNPs (g-1729G>A, g.2295T>C, g.2445G>A and g.2493G>A) and one variation site (g.-894delT) in the TNFRSF17 gene using direct sequencing analysis. In addition, the association of the genotype and allelic frequencies of these SNPs was studied in healthy controls and in patients with ulcerative colitis (UC) or irritable bowel syndrome (IBS). Although, the genotype and allelic frequencies of these SNPs, in the UC and IBS patients, were not significantly different from those in the healthy controls, the distribution of the AAG, GGA, AGG and AAA haplotypes, of the SNPs (g.-1729G>A, g.2445G>A and g.2493G>A) associated with the TNFRSF17 gene, in the UC patients, were notably different from those of the healthy controls (P = 0.002, 0.002, 4.7E-4 and 3.3E-6, respectively). Moreover, the frequencies of the AAG, AGG, GAG and GAA haplotypes were significantly different in the IBS patients compared to the healthy controls (P = 4.2E-5, 4.4E-17, 1.8E-22 and 1.6E-10, respectively). These results suggest that the haplotypes of the TNFRSF17 polymorphisms might be associated with UC and IBS susceptibility.

多目的 計劃法을 活用한 切花生産農家의 營農計劃樹立에 關한 硏究

蔡洙天(Chae Soo-Cheon),車在鎬(Cha Jae-Ho),孫基哲(Son Ki-Cheol) 한국원예학회 1991 한국원예학회 학술발표요지 Vol.9 No.1