참깨의 비닐피복 기계화 일관작업 체계 연구

강철환,이병규,안병옥,박충범,노재환,이성우,이승택,홍종태,이선호,김석현,이상철,김완석,Kang, Chul-Whan,Lee, Byoung-Kyu,Ahn, Byoung-Ok,Park, Choong-Bum,Roh, Jae-Hwan,Lee, Seong-Woo,Lee, Seung-Tack,Hong, Jong-Tae,Lee, Sun-Ho,Kim, Seok-Hyeon 한국작물학회 1997 한국작물학회지 Vol.42 No.5

This study was carried out to develop and investigate integrated mechanization system on polyethylene(P.E.) film mulching culture in sesame. Field trials were carried out to develop optimum mechanics for each step of manual operation in sesame culture and demonstrated those developed mechanics of sesame dibbling vinyl mulcher, sesame binder, sesame thresher and sesame grader at the farmer, s field of Hwasong (Kyunggi-do) in 1994 and 1995. Newly developed sesame dibbling vinyl mulcher brought saving manpower 280 hrs /ha for sowing and P.E. film mulching with it's 98% of labour saving for the harvesting operation of sesame. Sesame Binder showed 93% labour saving for cutting and binding with only 22 hrs /ha compared to 330 hrs /ha that of conventional. Sesame thresher was appeared to have 85% effects of labour saving for threshing with completely dry sesame bundles at one time by 23 hrs /ha compared to 151 hrs /ha that of conventional. Sesame grader was appeared to have 72% effects for sesame grain grading with 12 hrs /ha compared to that of conventional 54 hrs /ha. Grain yield of integrated mechanization culture system showed 6% higher than that of coventional. Integrated mechanization culture system (sesame dibbling vinyl mulcher + sesame binder + sesame thresher + sasame grader) showed 62% of labour saving effects through whole steps of sesame culture by 472 hrs /ha compared to that of conventional 1, 230 hrs /ha.

참깨 開花ㆍ登熟에 關한 硏究 Ⅶ. 참깨 草型에 따른 着朔位置別 千粒重

Chul Whan Kang(姜哲煥),Jung Il Lee(李正日) 한국육종학회 1986 한국육종학회지 Vol.18 No.2

One thousand grain weight were investigated for eight plant types classified by branching habit, capsules per axil, and loculi of a capsule. Two typical cultivars were chosen for plant type among 527 gene pools. The order of 1,000-grain weights were arranged from high to low;lower part, main stem and center capsules appeared heavier than upper part, branch and side capsules. Mono capsule setting and unbranched plant type were heavier for grain weight than tricapsule setting and branched type due to inactive ripenness on branched capsules. NMB type showed the heaviest grain weight and thought that BTB type would be the best possibility in yield capacity due to it’s largest sink capacity despite it’s relatively lighter grain weight. NTQ type appeared poor ripenness because of immaturity of higher part side capsules;however, it was believed that there were still possibilities for improving ripeness by enlarge source in 3 capsule and 4 carpels 8 loculi type by the good ripenness of 1 capsule and 4 carpels 8 loculi type. Relationship between grain filling rate and 1,000-grain weight were positive and high(R=0.977**). The grain filling rate appeared to be the most effective component on grain yield among the growth and yield components by path coefficient analysis.

Mutation breeding for determinate, diseases, lodging resistance and high yield in sesame

Chul Whan Kang(姜哲煥),Jung Il Lee(李正日),Rae Kyeong Park(朴來敬),Byung Han Choi(崔炳漢) 한국육종학회 1993 한국육종학회지 Vol.25 No.3

Fourteen sesame varieties have been released to farmer’s field since 1955 in Korea. Two varieties were bred by mutation breeding method out of the varieties, and X-ray 20 Krad-irradiated “Ahnsankkae” was developed in 1984 and has been being major sesame variety in Korea. It is occupied 31% of total sesame area due to higher yield uniformity in different regions and diseases resistance. Suwonkkae” was newly developed in 1991 from a X-ray irradiated mutant crossed to Korean local variety and had superior quality with higher essential amino acids and linoleic(Vitamin F) fatty acid content. Mutant 2,625 pedigree lines and 89,200 mutants of all generations were planted to the experimental field of Crop Experiment Station to screen and investigate diseases resistance, yielding ability and the other usable characteristics from 1989 to 1992 for sesame mutation breeding programme in Korea. 1, 540-mutant lines and 2,137g of M1 seeds were selected among all the released mutant lines and plants of all the generations from 1989 to 1992. Sodium azide(NaN3)-treated dwarf mutant “Suwon 128” had been promising due to it’s unique shape of dwarf with strong lodging resistance and higher yield possibility when planted densely. However, it was deleted from presenting recommending varieties in 1992 by the reason of weakness to phytophthora blight specially at the full maturing stage of harvesting time during the 3 years regional yield trials(RYT) in spite of similar yield performance compared to the recommended varieties. The only one determinate gene in the world “dt 45” irradiated 50 Krad γ-ray by Dr. A. Ashri has been promising gene in Korea for higher maturity rate and synchronization of flowering period to improve longer flowering period(40-50 days) of the indeterminate varieties. “dt 45” was beginning to be introduced to cross breeding programme from 1985, and “Suwon 129” was bred from the cross between “dt 45” and “Danbaeckkae”, and was released to regional yield trial from 1990 for the first time as a determinate type line in Korea. Determinate lines Suwon 131, 133, 134, and 135 were continuously released to regional yield trial following after Suwon 129, but almost all the lines of determinate showed lesser yield performance due to their few capsule setting nodes(3-5) on the stem than recommended indeterminate varieties in spite of their strong resistance to diseases and lodging and higher maturity rate. 5,015 lines(57%) and 1,229(58%) cross combinations of mutants and mutant crosses among 8,751 lines and 2,122 cross combinations of whole cross breeding pedigree nurseries have been planted and evaluated since 1989. 1,266 lines(60%) and 276(54%) cross combinations of mutants and mutant crosses among 2,096 lines and 509 cross combinations of whole yield performance trials(OYT, PYT, AYT and RYT) have been relaeased since 1989 in Korea. Consequently dwarf mutant “Suwon 128” and determinate varieties have been composed of one hundred percent in the crossing block in 1992. Determinate, semi-dwarf, diseases and lodging resistant, larger seed size, few and non branches along with higher maturity rate and yield have been illustrated as Ideal Plant Type of sesame breeding target in Korea. “SI 90033-2B” (Suwon 129//Suwon 9/IS 103) mutant which was found in F₂ pedigree nursery in 1992 showed strong resistance to diseases and lodging, plenty of capsule-setting nodes with longer capsule bearing position, lots of capsules and higher maturity rate compared to those of indeterminate and of other determinate mutants in Korea. It has been evaluated to overcome yield problem of determinates due to idealistic growth and yield components. “SI 90033-2B” has been believed to be the mutant line for creating Ideal Plant Type in sesame.

참깨 開花 登熟에 關한 硏究 Ⅹ. 참깨 有限 新草型의 開花 및 착삭習性

Chul Whan Kang(姜哲煥),Jung Il Lee(李定日),Bong Ho Lee(李奉鎬),Nak Sul Seong(成洛戌),Rae Kyeong Park(朴來敬) 한국육종학회 1991 한국육종학회지 Vol.23 No.4

This experiment was performed to investigate the flowering and capsule setting habit of newly developed determinate mutant in sesame (Sesamum indicum L.). Varieties tested could be classified into new plant type by it’s morphological trait of determinance with capsule shape, capsule setting and branching habit compared to reported 9 different plant types in this series. Flowers were appeared progressively toward the tip of the main stem and also toward the tips of branches except the terminal flower flowering at the 2nd day on each main stem and branchs of DBTB terminal (Determinate, Branches, Tricapsules, Bicarpels Quadriloculi) type. Flowers and capsules were beared on secondary branches in DBTB type which is contrasted with unbearing secondary branches in indeterminate type. Flowering order of DBTB type was the earliest on main stem, intermediate on primary branches and the latest on secondary branches, and flowers were appeared progressively from upper part toward lower part in primary branches. DBTB type showed higher inflorescence due to 12 days shorter flowering period compared to that of indeterminate type therefore this will be idealistic character for the purpose of breeding combining harvester adapting varieties in sesame. Capsule bearing ratio was the highest on main stem, intermediate on primary branches and the lowest on secondary branches in DBTB type. Capsule bearing ratio of DBTB type showed decreasing tendancy day by day after first flowering. DBTB type was considered as ideal plant type for labour saving combining harvesting with higher yield ability due to it’s higher inflorescence, flowering and capsule bearing on even secondary branches which do not develop in indeterminate plant types.

참깨 品質 改良에 關한 硏究 第4報. 참깨의 登熱에 따른 草型別 油分含量과 脂肪酸 組成의 變化

Chul Whan Kang(姜哲煥),Jung Il Lee(李正日),Eung Ryong Son(孫膺龍) 한국육종학회 1985 한국육종학회지 Vol.17 No.4

The study was conducted to provide basic information to breeders and agronomists working with sesame. The oil content and quality of fatty acid composition were investigated for eight plant types identified and classified by branching habit, capsules per axil, and carpels and loculi of a capsule. Each plant type had two typical cultivars chosen from 527 gene pools. Oil content incresed quickly up from 10th to 25th day after flowering of 25 to 30% and then showed almost maximum to 35th day after flowering. Significant differences between the plant types were not detected in oil content and fatty acid composition, but grains of upper capsules were much lower in oil content than those of middle or lower capsules. Unsaturated, Linoleic fatty acid tended to increase up to physiological maturity with peak on 45th day after flowering and quickly up from 10th to 25th day after flowering of 30% to 35%. Unsaturated, Oleic fatty acid content was about 60% on 10th day after flowering and then reduced slowly. Saturated, Palmitic fatty acid content was about 20% on 10th day after flowering and then reduced quickly upto 25th day after flowering of about 10%, and stearic fatty acid did not show much change in content from beginning of maturity till harvesting. Arachidic, Linolenic and Erucic fatty acids contents were about 5% on 10th day after flowering and then disappeared on 25th day after flowering. Thus this period was considered to be a critical for determining excellent sesame oil quality.

1990년부터 1996년까지 국내 일부 의학연구 학술지에 발표된 암 관련 논문 초록의 분석

김창엽,이영성,강철환,유근영,강길원,하범만,강영호,Kim, Chang-Yup,Lee, Young-Sung,Kang, Chul-Whan,Yoo, Keun-Young,Kang, Gil-Won,Ha, Beom-Man,Khang, Young-Ho 대한예방의학회 2001 Journal of Preventive Medicine and Public Health Vol.34 No.3

Objective : To explore the status of cancer research in the Republic of Korea. Methods : Thirty-eight medical journals, published in Korea between 1990 and 1996, were reviewed for abstracts relating to cancer research. Of the 5,899 eligible abstracts related to cancer, 4,732 were collected and evaluated. Results : Including first author and first two co-authors, a total of 7,427 authors were identified. Those who published an average of one or more article per one year were defined as cancer researchers for this study. This group, however, accounted for a small proportion of the total (3.1%). Analysis of the selected abstracts showed that the study goals in more than half focused on pathophysiologic mechanisms. Studies that were designed to use causal relationships such as cohort studies and randomized controlled trials were rare. A greater number of analytic and experimental studies were found in abstracts published by the cancer researcher group. More advanced study designs that explored causal relationships and analytic procedures were found in abstracts published later than those abstracts published from 1990 to 1992. Conclusion : Our findings show that researchers who published more articles adopted more advanced study designs. This study provides primary data that can be used to compare the status of cancer research in future studies.

이산화탄소 하이드레이트 형성을 이용한 얕은 바다 해저지반 보강을 위한 수치 해석적 기초 연구

이도연(Lee, Doyeon),강철환(Kang, Chul-Whan),박동엽(Park, Dong-Yeup),조계춘(Cho, Gye-Chun) 한국지반신소재학회 2023 한국지반신소재학회 학술발표회 Vol.2023 No.3

투수블럭포장의 받침 안정층 세굴 특성에 관한 연구

홍창호(Hong Chang Ho),강철환(Kang Chul Whan),강석준(Kang Seok Jun),조계춘(Cho Gye Chun),조선아(Jo Seon Ah),한신인(Han Shin In) 한국방재학회 2017 한국방재학회논문집 Vol.17 No.5

도시화에 다른 불투수 면적 증가와 도심지내 불충분한 우수배수 시설은 집중호우 시 도심지 내수침수 위험도를 증가시킨다. 이에 대한 대책으로 투수성 포장이 사용되고 있다. 투수성 포장은 LID(Low Impace Development) 기법 중 하나로 포장면의 투수성능을 자연상태와 유사한 수준으로 회복시켜 내수 침수 위험을 줄이는 성능을 가지고 있다. 투수블럭 포장은 LID 기반의 포장방법으로 투수블록의 움직임을 제한할 수 있는 받침안정층 위에 설치된다. 강우가 지속되면 이 받침 안정층이 세굴되어 상부 투수성 포장의 안정성에 영향을 미치게 된다. 본 연구에서는 강우 횟수에 따른 투수포장 하부의 받침 안정층의 세굴량을 실험을 통해 관찰하고 받침 안정층 세굴방지를 위한 그리드를 설치하여 세굴방지 효과를 확인하였다. The risk of urban flooding increases because impervious pavements are continuously constructed due to urbanization but drainage systems are insufficient. LID (Low Impact Development) based permeable pavement is developed which is a substitutional method for increasing permeability to natural status. The permeable block pavement is one of the LID based pavement which is installed on sand stable layer which prevents permeable block from migrating. Scouring of sand stable layer due to repeated rainfalls can cause irregular settlement of permeable block which causes the breakage of permeable block. In this study, experimental tests were performed to evaluate the degree of scour of sand stable layer reinforced with the grid which mitigates scouring under repeated rainfall conditions.

高冷地 여름 시금치 品種選拔 및 栽培法 究明

박영학(Park Young Hak),강철환(Kang Chul Whan),노준현(Noh Jun Hyun),허범량(Huh Beom Lyang),이경국(Lee Kyoung Kook) 한국원예학회 1989 한국원예학회 학술발표요지 Vol.7 No.1

참깨 品質 改良에 關한 硏究 Ⅴ. 참깨 種實 蛋白質 아미노酸 組成의 品種間 差異

Jung Il Lee(李正日),Chul Whan Kang(姜哲煥),Bong Ho Lee(李奉鎬),Jin Ki Bang(方鎭淇) 한국육종학회 1989 한국육종학회지 Vol.21 No.4

Amino-acid composition of sesame seed protein was analyzed for 46 varieties of the domestic and introduced germplasms. Total essential amino-acid content including arginine, histidine, lysine, phenylalanine, leucine, isoleucine, valine, threonine was the highest in korean local varieties while the korean improved varieties showed the lowest content of total essential amino-acid. Among the seed-coat colors, black seed-coat varieties were better than white seed-coat varieties in total amino-acid content of the 15 analyzed components. Among the varieties analyzed, Baekpokojong, Samcheog, Early russian, Japanese black, and PI 258372 showed relatively high total essential amino-acid content. Therefore those varieties were expected as an available gene source for the improvement of essential amino-acid composition in protein of sesame seed. From the results obtained, it was prospected to improve amino-acid composition in protein of sesame seed through appropriate recurrent selection using higher total amino-acid germplasm of sesame.