고로슬래그를 굵은골재로 사용한 콘크리트강도에 관한 연구

김영인,고창옥,이채규,양승현 조선대학교 국토개발연구소 1994 국토개발연구 Vol.14 No.2

Blast furnace, by-product of iron industry has widely used as reclamation materials for pavement or harbour construction. The studies which make blast furnace slag use as aggregates for concrete have being actived owing to natural aggregates insufficiency. In order to use air cooled blast furnace slag as a coarse aggregate for concrete which was fixed to 440kg, 400kg, 360kg, 320kg, 280kg, 240kg of cement content were performed. This study is aimed to ascertain the feasibility of utilizing the concreate with crushed slag aggregates and to find specific properties such as slump air content, compresive strength, tensile strength, bending strength. The results of this study are summarised as follows; 1. On the base of 320kg of unit cement weight the strength according to each dry day are similar in the condition of 45% of w/c whereas in the condition of 50% of w/c the strength of 7-days are similar, but the strength of 28-days are different. 2. In the relation of δ25 - c/w, the strength of slag concrete is greater than that of crushed storn concrete in condition of epual c/w except 400kg/㎥. 3. Slag of concrete as aggregate is destoryed with mortar. 4. The relation of δ28 and tensile strength is very good(γ = 0.8), the equation of regression analysis is δt= 0.63+0.00598 × 28. 5. The reation of bend strength and w/c is liner(γ = 0.72) the equation of regression analysis is δb=80-0.69w/c. 6. It must be care to abtain equal workability to natual aggregate concrete because the change of water absorption is greate. The water content of slag concrete is more than that of crushed storn concrete to obtain the same workability. It must be careful to use blast furnace slag as a coarse aggregate for concrete. And after investgating the quality of demended concrete carefully, real mixing work must be done.

Interpretation of Varietal Response to Rice Leaf Blast by G x E Analysis with Reduced Number of Nursery Test Sites

Chang Ihn Yang,E.L. Javier,Yong Jae Won,Sae Jun Yang,Hae Chune Choi,Young Boum Shin 韓國作物學會 2000 Korean journal of crop science Vol.45 No.5

Blast severity data of 39 rice varieties at 11 sites in Korea from 1997 to 1999 were analyzed using AMMI model and pattern analysis. Genotype x Environment (G~times E) interaction sum of squares (SS) accounted for 12 % of the total SS. Eight genotype groups and seven location groups were identified based on blast reaction pattern. The data obtained from over 21 sites with 44 test varieties from 1981 to 1996 were also considered. These were compared with the 1997-1999 data using the G~times E analysis results. Majority of the variability in the Korean Rice Blast Nursery (KRBN) were attributable to variations due to genotypes. Variations of G~times E interaction were maintained though test sites were reduced from 21 to 11 sites. Broadly compatible biological discriminative varieties identified were Nagdongbyeo and Akibare while broadly incompatible biological discriminative varieties identified were Hangangchalbyeo and Seogwangbyeo. Key sites for future evaluation work could be selected from location groups. Each location group should be represented by the site with the strongest interaction pattern. Blast responses in Cheolwon, Gyehwa, Suwon, Iksan, and Icheon showed different patterns from other locations.

Evaluation of Genotype * Environment Interaction in Rice by Statistical Model

Chang-Ihn Yang,Hong-Yeol Kim,Yeon-Kyu Kim,Ha-Cheol Hong,Hung-Goo Hwang,Hae-Chune Choi,Huhn-Pal Moon,Yeong-Boum Shin 한국육종학회 2003 한국육종학회지 Vol.35 No.2

Regional Adaptability Test (RAT) was conducted to select promising breeding lines of rice for cultivation in specific regions. Analysis of genotype (G) and genotype by environment (G ´ E) interaction observed in RAT was carried out to test their adaptability for the distribution of elite breeding lines / varieties to various locations. Paddy rice yield data of RAT for ordinary transplanting in central plain areas from 1997 - 1999 were studied. Data showed that genotype variability (49%) was the highest and environmental variability (30%) was slightly higher than that of G ´ E interaction (21%) in rice paddy yield. The major determinants of productivity, among geological and meteorological factors, were sunshine hours, precipitation in mid September, and mean cloud amount. IPCA (Interaction Principal Component Analysis) 1 was correlated positively and significantly with precipitation but correlated negatively but significantly with sunshine hours and mean cloud amount in early July. However, this study failed to establish significant correlation between IPCA2 and environmental variables measured at each of the sites. This low level of IPCA2 correlation further suggests that other dimensions of the environment should be explored and examined. Three elite lines, Suweon 437, Suweon 433 and Suweon 442 were adaptable to Suwon and Yeoju, but Suweon 438 was found to be suitable for Hwaseong, Yeoncheon and Chuncheon. Hwaseonbyeo, Ilpumbyeo and Suweon 434 were adaptable in Suwon and Cheongju. The analysis further implied that Suweon 434 was adaptable to central plain areas. The statistical parameters from the regression model were compared with IPCAs from the AMMI (Additive Main effects and Multiplicative Interaction) model and were useful for understanding varietal adaptability.

Evaluation of Genotype x Environment Interaction in Rice by Statistical Model

Chang Ihn Yang,Hong Yeol Kim,Yeon Kyu Kim,Ha Cheol Hong,Hung Goo Hwang,Hae Chune Choi,Huhn Pal Moon,Yeong Boum Shin 한국육종학회 2003 한국육종학회지 Vol.35 No.2

Regional Adaptability Test (RAT) was conducted to select promising breeding lines of rice for cultivation in specif ic regions. Analysis of genotype (G) and genotype by environment (GxE) interaction observed in RAT was carried out to test their adaptabili

Variation of dietary fiber content and grain characteristics of Goami2

Chang Ihn Yang,In Dug Choi,Won Ha Yang,Don Hyang Choi,Young Hwan Yun,Weon Tae Jeon,Hee Suk Han,Jong Wook Park 한국육종학회 2005 한국육종학회 학술발표회 발표요지 Vol.37 No.1

Reaction of High Quality Japonica Varieties to Leaf Blast Reaction through G X E Interaction Analysis in Rice

Chang Ihn Yang,E. L. Javier,Young Chan Cho,Kyu Seong Lee,Hong Yeol Kim,K. K. Jena,Young Tae Lee 한국육종학회 2007 한국육종학회지 Vol.39 No.2

This study was done to understand the G x E interaction of rice blast reaction for Japonica high quality rice varieties and to observe blast pattern for high quality varieties. Twenty one percent of the total sum of squares (SST) in blast reaction data of high quality Japonica varieties is attributed to genotype (G) by environment (E) interaction variation. This portion of blast response is higher than 8~12% of G x E effect in blast severity data obtained from various ecotypes of rice varieties. Blast response scores obtained from high quality Japonica varieties group were more severely affected by environment condition than mixed groups with Japonica and Indica varieties. Interaction Principal Component Analysis (IPCA) scores obtained from AMMI analysis for the leaf blast response implied variation of G x E interaction. Correlation analysis suggested that IPCA1 was associated with latitude, maximum mean temperature, precipitation and mean cloud amount. IPCA2 was associated with mean relative humidity, and IPCA3 was associated with precipitation and minimum relative humidity. Pattern analysis generated nine genotype clusters according to blast reaction over 11 regions. Collectively, the A, B, C, and D groups were susceptible to rice blast, where as the E, F, G, H, and I groups were relatively resistant to rice blast through multi-location blast nursery test. Relationship between the identified genes of high quality varieties and blast scores at each test site in the level of group could be analyzed based on the results from G x E Interaction analysis.

연구보문 : 벼 DUS-Test를 위한 표준품종 선정에 관한 국제연락시험

양창인 ( Chang Ihn Yang ),정오영 ( O Yeong Jeong ),이점호 ( Jeom Ho Lee ),서정필 ( Jung Pil Suh ),조영찬 ( Young Chan Cho ),김연규 ( Yeon Gyu Kim ) 한국국제농업개발학회 2011 韓國國際農業開發學會誌 Vol.23 No.1

This study was carried out to evaluate field performance of example rice varieties in multi-location for DUS-test. We are participating in the International Nursery Test for Selecting Example Varieties for Distinctness, Uniformity, and Stability Test(INEVDUST) as one of items in International Network for Genetic Evaluation of Rice(INGER) organized by IRRI. During 2007-2008, 56 example varieties were investigated based on UPOV Guidelines for 16 agronomic characters such as leaf anthocyanin coloration of auricles, time of heading, attitude of blade in flag leaf, density of pubescence of lemma, antocyanin coloration of apex in lemma, color of stigma, stem length, antocyanin coloration of nodes, distribution of awns in panicle, length of main axis in panicle, panicle attitude in relation to stem, attitude of branches in panicle, decorticated grain length, grain width, grain shape, grain color and grain aroma. Auricles of WC 1240 and IR 69682-132-1-1-2 were purple coloration and eight varieties like DV35, K 39-96-1-1-1-2 had smooth hull. Purple nodes in stem were observed in K39-96-1-1-1-2, DV 85 and WC 1240. The peak of heading days was between 111-120 days. Semi-uplight type in panicle attitude in relation to stem occupied 48% and semi-errect type in panicle attitude of branches was 61%. 56 example varieties were divided into six groups with parameters of 16 traits.

QTL Analysis for the Paste Viscosity Characteristics in Japonica Rice (Oryza sativa L.)

Young-Chan Cho,Chang-Ihn Yang,Mi-Ra Yoon,Jung-Pil Suh,Jeung-Heui Lee,Jeong-Ju Kim,Yong-Jae Won,Im-Soo Choi,Jeom-Ho Lee,Yeon-Gyu Kim 한국육종학회 2012 한국육종학회 심포지엄 Vol.2012 No.07

Rice is the most important crop as the staple food and two priorities in rice production are high yield and good quality in Korea. Far more improvements in grain quality, especially eating quality are required to meet the demand of consumers in rice producing areas. In the study presented here, a recombinant inbred lines (RILs) population derived from a cross between a temperate japonica and a tropical japonica and its genetic linkage map were employed to locate the QTL locus underlying six parameters of RVA profiles. Out of six RVA profile parameters, two characteristics, breakdown viscosity (BDV) and setback viscosity (SBV) are more correlated to eating quality of cooled rice. A total of four QTLs for two RVA profile parameters were identified. Two QTLs, qBDV-6 and qBDV-9 for BDV were detected on chromosomes 6 and 9. These QTLs increased the BDV by 26.2 and 16.4 from Ilpumbyeo allele, respectively. A QTL, qBDV-6 in the interval RM540-RM587 of the wx gene on chromosome 6 was reacted as a major QTL which could explain 26.2% of the total phenotypic variation. A QTL, qBDV-9 in the interval RM5688-RM444 explained 7% of the total variation as a minor QTL. Two QTLs, qSBV-6 and qSBV-9 for SBV also identified at the same region with QTLs of BDV on chromosomes 6 and 9. A QTL, qSBV-6 in the interval of the wx gene on chromosome 6 could explain 24.4% of the total phenotypic variation. A QTL, qSBV-9 in the interval RM5688-RM444 explained 8.2% of the total variation. These QTL region on chromosomes 6 and 9 would be use as useful marker to select elite lines of good eating quality in early generations in japonica rice breeding.

Extrapulmonary Tuberculosis : Detection with Ga - 67 Scan and CT Correlation

Yang, Seoung Oh,Lee, Yung Il,Lee, Myung Chul,Koh, Chang Soon,Han, Man Chung,Choi, Byung Ihn,Kim, Chu Wan 대한핵의학회 1991 핵의학 분자영상 Vol.25 No.1

자기방사능법에 의한 DNA in situ Hybridization방법

장성익,양창헌,김대광,정용욱,최인장,이인환 계명대학교 의과대학 1991 계명의대학술지 Vol.10 No.2

To find out the optimal condition for DNA in situ hybridzation using isotopically labeled DNA probe with the general goal of understanding how localization and organization of N-myc oncogene sequences within the SK-N-BE cell line, present investigation was carried out by ³H-labeled pMF3-SEBI-Nmyc probe in situ hybridization. The results were as follows: Specific activities of 2~5×10??? dpm/㎍ of DNA were gained after separation of the ³H labeled DNA by spindialysis using sepharose CL-6B. The chromosomes and interphase nuclei were hybridization with the labeled probe for 14hr at 41℃ in a hybridization mixture solution: 50% formamide, 2×SSCP(2×SSC, 0.04M NaPO4, pH7.0), 10% dextran sulfate, 100㎍/ml of sonicated salmon sperm DNA and 0.2mg/ml each of bovine serum albumin, Ficoll, and polyvinylphyrrolidone. Autoradiography was performed by using half-strength Sakura NR-M2 emulsion for 7-14 days at 4℃. Silver grains were simultaneously detected on Q-banded chromosomes in the same metaphase. Amplifications of N-myc oncogene were conformed on homogeneous staining regions of chromosome 11 and marker chromosome by statistical analysis. It was impossible with this technique to localize N-myc oncogene within the interphase nucleus of SK-N-BE cell line.