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Morphological and Genetic Diversity of Korean Native and Introduced Safflower Germplasm

  • Shim Kang-Bo;Bae Seok-Bok;Lim Si-Kyu;Suh Duck-Yong
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.49 no.4
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    • pp.337-341
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    • 2004
  • Morphological and genetic diversity of thirty nine safflower germplasm were collected and evaluated by Principal Component Analysis (PCA) and Random Amplified Polymorphic DNA (RAPD) method. Stem length and seeding to flowering days of the safflower germplasm showed $26\~117cm\;and\;76\~179$ days of variation respectively. USA originated germplasm showed higher oil content as $39\%$, but that of Japanese showed lower as $26\%$. PCA made three different cluster groups according to some agronomic characteristics of safflower. Korea originated germplasm showed similar cluster group with that of collected from USA in the PCA of stem length. But in the seeding to flowering days, it showed similar cluster pattern with that of collected from Japan rather than USA. In the experiment of RAPD analysis, total five primers showed polymorphism at the several chromosomal loci. Korea, China Japan and South Central Asia originated germplasm were differently classified with USA and South West Asia originated germplasm with lower similarity coefficient value (0.47). Most of Korea originated germplasm were grouped with South Central Asia originated germplasm with higher similarity coefficient value (0.74) conferring similar genetic background between both of them. China and Japan originated germplasm were dendrogramed with Korea originated germplasm at the 0.65 and 0.50 similarity coefficient values respectively. Some common results were expected from both of PCA and RAPD analysis, but lower genetic heritability caused by relative higher portion of environmental variance and environment by genotype interaction at the expression of those of agronomic characteristics made constraint to find any reliable results.

Ultrastructure of the flagellar apparatus in Rhodomonas salina (Cryptophyceae, Cryptophyta)

  • Nam, Seung Won;Jo, Bok Yeon;Shin, Woongghi
    • Korean Journal of Environmental Biology
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    • v.38 no.2
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    • pp.278-288
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    • 2020
  • Rhodomonas salina is a phototrophic marine flagellate. We examined the ultrastructure of R. salina with particular attention to the flagellar apparatus by transmission electron microscopy and compared it with that of other cryptomonads reported previously. The major components of the flagellar apparatus in R. salina were a keeled rhizostyle (Rhs), a striated fibrous root(SR), a SR-associated microtubular root (SRm), a mitochondrion-associated lamella (ML), and three types of microtubular roots (9r, 4r, and 2r). The keeled Rhs originated near the proximal end of the dorsal basal body, passed near the nucleus and dissociated at the posterior end of the cell. The SR and SRm originated between two basal bodies and laterally extended to the right side of the cell. The ML originated between two basal bodies and extended to the left side of the cell. The 9r originated between the ventral basal body and the Rhs and extended toward the anterior dorsal lobe of the cell. The 4r originated near the 9r and extended toward the dorsal lobe with the 2r, which originated between two basal bodies. Here, the flagellar apparatus in R. salina is described, and the ultrastructure of the flagellar apparatus is compared among cryptomonad species.

Study on the Yellow Sandy Dust Phenomena in Korean Peninsula and Chemical Compositions in Fine Particles at Background Sites of Korea. (한반도의 황사 관측현황 및 배경지역 미세먼지의 화학적 조성에 관한 연구)

  • Baek Kwang-Wook;Chung Jin-Do
    • Journal of environmental and Sanitary engineering
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    • v.19 no.4 s.54
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    • pp.9-18
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    • 2004
  • In this study, the observation data for the yellow sandy dust phenomena from the year 1999 to 2003 at background sites in Korea were collected at Global Atmospheric Observatory at An-Myeon island and its temporal variation were analyzed. The chemical characteristics of the fine particles were also analyzed in order to evaluate sources of the yellow sandy dust particles. The results showed that the monthly average mass concentration of the fine particles was the highest in springtime and the lowest in summertime in general. The magnitude of its variation was also the highest in March in which the occurrence of yellow sandy dust was the most frequent and thus the number of samples was the largest, while the lowest in June through September. The yearly variation of ion components contributions to the total mass concentration of the fine particles was slowly decreasing, showing that $63\%$ in 1999, $59\%$ in 2000 and $56\%$ in 2003. The most prevalent ion components in the fine particles were found to be $NO_3$ and $SO_4^{2-}$, which are known to be source materials of acidic precipitation, and $NH_4^+$, a neutralizing material of the acid precipitation. Relative proportion of metal components in the fine particles was calculated as $14\%$ in average, and their concentrations are in an order of Fe > Al > Na > Ca > Zn > Pb > Cu > Mn > Ni > Cd > Cr > Co > U. The results indicated that main sources of the metals was soil-originated Fe, Al, Ca, and Mg, and the contribution of anthropogenic air Pollution-originated Zn, Pb, Cu, Mn were also high and keep slightly increasing. Statistical analysis showed that the chemical components could be divided into soil-originated group of Mg, Al, Ca, Fe, and Mn and air pollution-originated group of $NO_3$, Zn, Pb, and they are occupying more than $60\%$of all the components in the dusty sand. The results explain that An-Myeon island is more influenced by soil-originated source than ocean-originated one and also the influencing strength of anthropogenic poilution-originated source is less than $50\%$ of that of soil-originated sources. Compared to non-yellow sandy period, the yellow sandy dust period showed that the amounts of soil-originated $Mg^{2+}$ and $Ca^{2+}$ and ocean-originated $Na^+$ and $Cl^-$ were increased to more than double and the metals of Mg, Al, Ca, Fe were also highly increased, while micro metal components such as Pb, Cd, Zn, which have a tendency of concentrating in air, were either decreased or maintained at nearly constant level. In the period of yellow sandy dust, a strong positive correlation was observed between water soluble ions and between metals in terms of its concentration, respectively. Factor analysis showed that the first group being comprised of about $43\%$ of the total inorganic components was affected by soil and they are ions of $Na^+,\;Mg^{2+}\;and\;Ca^{2+}$ and metals of Na, Fe, Mn and Ni. The result also showed that the metals of Mg and Cr were classified as second group and they were also highly affected by soil sources.

The Study on the Origin of Soybean Cultivation (대두재배(大豆栽培)의 기원(起源)에 관한 고찰(考察))

  • Lee, Sung-Woo
    • Journal of the Korean Society of Food Culture
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    • v.3 no.1
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    • pp.1-5
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    • 1988
  • According to the literature, soybean cultivation originated from Wang-Gong (B.C. 685-643) of China who brought it from northeast Asia, for the first time. FUKUDA, of Japan divided soybean into three species-the wild, the cultivated and the intermediate. From the result of that study, he concluded that the soybean originated in northeast Asia. But Wang Kum Rung of China insisted that soybean originated in Hwa-Nam, because the soybean is a shortday plant and the agricultural history of Hwa-Nam, south of China, is older than that of northeast Asia. However, agriculture in northeast Asia had been already begun about B.C. 4000-6000 and the origin of culture cannot be decided only by photosensitivity. It has been proved that soybeans found in Korea were same as the ones of B.C. 2000. The soybeans of northeast Asia meet the conditions of the probable place of origin of cultivated crops established by Vabilov. Accordingly it is concluded that soybean has been originated from northeast Asia.

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A Study on the Quantitative Analysis of SO$_2$ Dry Deposition in the Northeastern Asia (동북아 지역에서의 SO$_2$ 건성 침적에 관한 정량분석)

  • 홍민선;김순태;이동섭
    • Journal of Korean Society for Atmospheric Environment
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    • v.13 no.3
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    • pp.231-241
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    • 1997
  • A tracer model was applied in the Far East Asia to investigate the dry deposition rates of air pollutants on Korean Peninsula originated from different countries including China and Japan. Wind direction was chosen to predict the maximum deposition rates and SO$_2$ was chosen as a tracer to estimate the source strength. Model simulation shows that inflow, deposition and airborne ratios of China-originated SO$_2$ were 50%, 8% and 30%, respectively, at most. Also it was found that deposition, outbounded and airborne ratios of Korea-originated SO$_2$ were 15~77%, 8~75%, and 3~30%, respectively Model simulation also shows that inflow, deposition and airborne ratios of Kyushu-originated SO$_2$ were, 30~45%, 8~14% and 20~25%, respectively. This study shows that tracer model can be applied on the estimation of air pollutants partitioning in regional scale and that more sophisticated modules and schemes can be developed and applied to better predict the transboundary amounts of air pollutants in this region.

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Clay Activity and Physico-chemical Properties of Korean Soils with Different Clay Minerals (점토광물 조성이 상이한 토양의 점토활성도와 이화학적 특성)

  • Zhang, Yong-Seon;Sonn, Yeon-Kyu;Park, Chan-Won;Hyun, Byung-Keun;Moon, Yong-Hee;Song, Kwan-Cheol
    • Korean Journal of Soil Science and Fertilizer
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    • v.43 no.6
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    • pp.837-843
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    • 2010
  • This research investigated classification of clay activity degree by different clay mineral components. Based on compositions of different clay and oxide minerals within 390 soil series in Korea, 7 soils were selected to analyze for CEC and specific surface area of clay minerals. As a result, soils were mainly composed with Chlorite originated from sandstone, Smectite originated from Andesite porphyry and combination of Allophane and Ferrihydrite originated from volcanic ash, if the ratio of CEC value to clay content (degree of clay activity) was greater than 0.7. If the degree of clay activity was ranged between 0.3 and 0.7, soils were composed mainly with Kaolin originated from anorthite. Soils with this ratio also was composted with combinations of Kaolin, Illite and Vermiculite originated with river deposits. When the degree of the activity was less than 0.3, soils were commonly red-yellowish color and composed with two different minerals. One type of composition was Kaolin originated from granite and granite gneiss and the soils contained Geothite and Hematite. The other type was composited mainly with Illite and Vermiculite minerals originated from granite. These soils contained Gibbsite, Geothite and Hematite. The degree of clay activity was highly related with CEC and specific surface area. The greater degree of the activity displayed greater values of clay CEC and specific surface area. It is not easy to measure actual quantity and compositions of clay minerals, while the degree of clay activity can be measured from routine soil analyses. As a conclusion, the degree of clay activity may be not just a simple but also powerful tool to estimate physical-chemical properties of soils and to evaluate the soil classification in Korean soils.

A Case of Taeumin Chorea originated after Cerebral infarction (뇌경색(腦硬塞) 후 발생한 태음인(太陰人) 무도병(舞蹈病)에 대한 증례)

  • Jung, Woon-Ki;Kim, Eun-Yi;Lee, Sang-Min;Shin, Mee-Ran;Choi, Jae-Wan;Yoon, Ji-Yung;Kim, Dal-Rae;Han, Dong-Youn
    • Journal of Sasang Constitutional Medicine
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    • v.17 no.3
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    • pp.128-134
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    • 2005
  • 1. Objectives The primary purpose of this case is to report that a Taeurnin patients with Chorea originated after Cerebral infarction was treated with 'Yeoldahanso-tang(熱多寒少湯)' and then her symptoms improved 2. Methods We diagnosed her as Chorea originated after Cerebral infarction. So we treated her with 'Yeoldahanso-tang(熱多寒少湯)'. 3. Results After we treated her with 'Yeoldahanso-tang(熱多寒少湯)', her symptoms improved. 4. Conclusions 'Yeoldahanso-tang(熱多寒少湯)' may have an effect on Treatment Chorea originated after Cerebral infarction of Taeurnin.

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A Study on the Control Method of Hand & Automatic Operation of On-Off Wiring of an Easy Elevator (간이 엘리베이터 수.자동 개폐배선 제어방식에 관한연구)

  • Wee, Sung-Dong;Gu, Hal-Bon;Kim, Tae-Sung
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2002.07b
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    • pp.1107-1112
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    • 2002
  • An easy elevator originated is an opened system to compare an existing equipment, and learning efficient is high as a wiring that the sequence control circuit is on and off. The structure of an equipment to be controled from the first floor to the fifth floor is constructed by a lamp to express the function of the open-close of the door according to the cage moving, to express the mechanical actuation of the forward-reverse break and motor of load and of hand-worked control component of Push-Button S/W, L/S and Relay. In order to act of the elevator function that these components connected, designed the auto program and the sequence control circuit. Consequently the process that these(1~5steps) operated the cage with an auto program of the elevator and the sequence control circuit is controled by the step of forward and reverse that the L/S1~L/S5 of sensor adjust function let posit, by the adjustable S/W1~S/W5 of PLC testing panel and the S/W1~S/W5 which installed on the transparent acryl plate of a frame. In here, improved apparatus is the learning equipment of combined use to study the principle and the technique of the originated sequence control circuit and the auto program of PLC.

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A Case of Pseudocyst Originated from Ectopic Pancreas in the Transverse Mesocolon Associated with Colonic Duplication (대장중복증과 동반된 횡행결장간막의 이소성 췌장에서 유래된 가성낭종 1예)

  • Kim, In-Gyu;Han, Seok-Joo;Yang, Kyung-Mu;Kim, Ho-Geun;Kim, Myung-Joon;Oh, Jung-Tak;Hwang, Eui-Ho
    • Advances in pediatric surgery
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    • v.4 no.1
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    • pp.79-84
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    • 1998
  • We have treated a case of pseudocyst of transverse mesocolon in 3-year-old male child. Operative findings demonstrated that the pseudocyst originated in the transverse mesocolon, and was not connected to the pancreas. A colonic duplication was found incidentally near the pseudocyst. On microscopic examination, ectopic pancreatic tissue was noted in the transverse mesocolon. This pseudocyst was thought to have originated from the ectopic pancreas of the transverse mesocolon. This is the first reported case of pseudocyst originated from ectopic pancreas of the transverse mesocolon, combined with a colonic duplication. The pathogenesis is discussed.

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