관상동맥중재술의 표준진료권고안

이철환 대한내과학회 2012 대한내과학회 추계학술대회 Vol.2012 No.2

연초 수확엽의 숙도가 색채 및 색소물질 함량에 미치는 영향

이철환,진정의,한철수,Lee, Chul-Hwan,Jin, Jeong-Eui,Han, Chul-Soo 한국연초학회 1996 한국연초학회지 Vol.18 No.1

Field experiment was conducted to get the basic information about the difference in color and plastid pigments at the different stage of harvest of flue-cured tobacco cultivated in paddy field, and compared to upland ones. All tested crops were primed in lots of 3 to 4 at each priming, beginning at the bottom of the plant. Leaf pigments and chromatic values of tobacco leaves were determined in samples collected at weekly intervals, and according to analyses obtained from 4 stalk positions. By the degree of maturity, leaves harvested were separated with visual characters into four classes of immature, mature, ripe and mellow. regardless of stalk position, chlorophyll contents was higher in the order of immature > mature > ripe > mellow, respectively. In fresh leaves, chlorophyll levels was higher with ascending stalk position. chlorophyll a and b in cured leaves were less than 10% of the amount present at harvest, and it was estimated that maturity condition also influenced the rates of degradation of plastid pigments. Fully mature leaves of upland diverted from paddy field showed slightly higher in chlorophyll contents than in those of upland tobacco ones but somewhat lowered in $L^*$ and $b^*$ values, and there was no difference in $a^*$ value.

겨울 햇살

이철환 샘터사 2000 월간 샘터 Vol.31 No.12

香草의 收量品質에 미치는 移植時期의 影響

李哲煥,卞珠燮 충북대학교 엽연초연구소 1988 煙草硏究 Vol.13 No.-

Hyangcho was transplanted from April 5th to June 5th with 15days interval, and on July 5th. As the transplanting date became later days to flower shortened, yield and quality by price deceased. As the transplanting date delayed the content of total nitrogen, protein nitrogen, nicotine and pH increased, but reducing sugar and pet. ether extracts decreased. Reducing sugar and pet. ether extracts content higher in the leaves of polyethylene firm mulching system than in non-mulched ones.

體格과 體力의 發達 및 相關에 관한 統計學的 硏究 : 女子中高等學生을 中心으로 with girls' Junior & Senior High School Students as the Central Figures

李鐵煥 진주여자전문대학 1983 論文集 Vol.5 No.-

1. the Method of research The objective of this research is to consult and coach the selection of sports items according to ages and individual difference, and to make an offer the reference materials to prospect this individual physique and the physical fitness with the knowledge of the growth and developmental process of the physique and physical fitness of junior high school girls in expansion period and senior high school girls in adolescence by evaluating and analyzing the physique and the physical fitness of twelve-seventeen years old girls randomly sampled from "S" girls junior & "S" girls senior high school in MASAN 1) the developmental condition of physique. 2) the developmental condition of physical fitness 3) the relation of physique reciprocity. 4) the relation of physical fitness reciprocity. 5) the relation of physique & physical fitness. 6) the regression equahon between physique reciprocity. 7) the regression equation of physical fitness items to physique. 2. the result of research. 1) in the physique development. Generally it seems to be a noticeable development from 12 to 15, but thereafter the development become to be dull. 2) in the physical fitness development. Strength and agility are developing continously but the rest seem to develop to some extent and regress continously 3) in the relation of physique reciprocity. It seems to be nearly a high positive correlation. 4) in the relation of physical fitness reciprocity. The most of items have a positive or negative correlation. 5) in the relation of physique and physical fitness A particular aspect is that both of the grip strength and physique are to have a little positive correlation. 6) in the physique and the reciprocity of physical fitness items to physique. A certain physique condition offers some references to evaluate another physique condition or basic physical fitness

국토추적 / 지도가 바뀌고 있다 : 대호방조제

이철환 대한지방행정공제회 1985 地方行政 Vol.34 No.381

연초 III형 Grey엽의 발생양상과 화학성분 특성

이철환,진정의,한철수,Lee, Chul-Hwan,Jin, Jeong-Eui,Han, Chul-Soo 한국연초학회 1996 한국연초학회지 Vol.18 No.2

The occurrence and chemical properties of grey tobacco leaves (Type III) found in 1995 crop of flue-cured tobacco cultivated in paddy field were investigated to compare with those of normal leaves. Cured leaves of NC82 were separated by visual characters into 3 classes of slight, fair and severe symptoms of grey leaf by the percentage of grey parts to whole leaf area. Number of samples classified with discoloring portion was the order of greyish brown > reddish brown > greyish yellow, respectively. Grey leaves of this type were mostly found among the leaves harvested from upper stalk position, and it was estimated that growth rate of upper leaves also influenced on the occurrence of grey leaves. Grey leaves showed remarkably lower b* and L* values than those of normal leaves, while a* value was mostly higher in grey leaves. These tendencies in chromatic aberration showed more remarkable difference in the degree of grey symptoms. Chemical analyses of grey leaf samples indicated that they contained less total nitrogen and nicotine, and more total sugar and starch than those of normal leaves. In chemical traits, these tendencies were accordance with the degree of grey symptoms, and within the same leaf, grey parts were decreased in total nitrogen and ether extract content compared with those of normal parts, but there was no difference in nicotine and Cl contents. Key words : grey leaf tobacco (type III), grey symptom, color, chemical properties.

토양산도 및 시비량 조절에 의한 연초의 Grey엽 발생방지 효과

이철환,진정의,이동훈,Lee, Chul-Hwan,Jin, Jeong-Eui,Lee, Dong-Hoon 한국연초학회 1994 한국연초학회지 Vol.16 No.2

This study was carried out to get agronomic information about the tobacco culture in paddy soil where incidence of grey tobacco leaves used to appearly uptake of iron, manganese and chlorine due to soil acidity and high water level. Application of lime to paddy soil(pH5.4-5.6) reduced content of iron, manganese known as proceeding materials giving rise to variegated grey tobacco after curing, compared with non-treatment. Grey leaves were found mainly at lower and middle stalk positions, and incidence of grey tobacco was lowered by application of lime in the well drained field but was not affected by level of fertilizer application. Amendment of soil acidity by lime tended to decrease chlorine and manganese content in leaves. Nicotine and mangenese content of leaves were lowered by reduction of one-quarter fertilizer level. In case of lime treatment, increase of yield reached to 4-6% comparing with those of non-treatment but price per kg was not affected. Reduction of N fertilizer level to three-quarters had the equal yield but high quality of leaf comparing with standard fertilization in paddy field.

연초grey엽 발생의 품종간 차이

이철환,진정의 한국연초학회 1995 한국연초학회지 Vol.17 No.2

Varietal difference in the occurrence of grey leaves in upland diverted from paddy field were investigated with several flue-cured tobacco varieties in Korea. Grey leaves caused by Fe, Mn and Cl toxicity were occurred in all varieties used in this experiment. The variety, NC82 and KF113, however, were more sensitive than other varieties to the toxicity. It's revealed that grey leaves had little effects on the contents of total sugar, nicotine and total nitrogen. NC82 and KF113 were increased in the ratio of occurrences in the paddy soils which had a tendency to concrete with the passage of days after transplanting. NC82 showed high occurrences of grey leaves in each of variety used and it was estimated that this variety had a traits of easy occurrences of grey leaves, and it might be presumed that there would be a close connection between the ratio of occurrence and amounts of absorbed causal materials accumulated in plants and tobacco varieties on the occurrence of grey leaf tobacco.

Bulk 건조엽의 편평엽 발생양상과 이화학적 특성

이철환,진점의,한철수 한국연초학회 1998 한국연초학회지 Vol.20 No.2

The occurrence and physico-chemical properties of flat leaves found in 1997 curing trial related to the prevention of occurrence of flat leaves at bulk curing of flue-cured tobacco were investigated and compared with those of normal leaves. Cured leaves of NC82 were separated into 4 classes of none, slight, fair and severe symptoms of flat leaf by the percentage of flattened parts to whole leaf area. The flat leaves were mostly found among the leaves of lower stalk position, and it was estimated that growth rate of lower leaves also influenced on the occurrence of flat leaves. In chromatic aberration of cured leaf, flat leaves showed remarkably lower b and L values than in those of normals but there was no difference in a value. On the other hand, in chemical analyses of flat leaf samples, nicotine, total sugar, ether extract and total nitrogen contents were decreased with the degree of flat symptoms. In physical properties, filling capacity of cured leaves was decreased with the degree of flat symptoms comparing with those of normal leaves, while shatter index was showed a reverse tendency, and then within the same leaf, flat parts were decreased in total sugar, ether extract and filling capacity compared with those of normal ones, but remarkably increased in shatter index, and there was no difference in nicotine and total nitrogen contents.