• Title/Summary/Keyword: New occurrence

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Possibility of breeding super rice cultivars using gene linkage

  • Tran, Dang Xuan;Tran, Dang Khanh;Truong, Thi Tu Anh
    • Proceedings of the Korean Society of Crop Science Conference
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    • 2017.06a
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    • pp.27-27
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    • 2017
  • The rapid growth of world population, reduction of cultivated areas for crop production, and detrimental effects of pests, diseases, and climate changes have required to breed new rice cultivars with high yield, accepted quality, but strong resistance to abiotic and biotic stresses. However, traditional breeding needs much time to breed a new cultivar, whereas the successful use of molecular breeding is still questionable. We have developed a novel mutation which allow to cross many rice cultivars together with low segregation, that allow to breed a new cultivar in only several cropping. The mechanism has been unknown, but we suggest that gene linkage may play a crucial role, of which the semi dwarf gene might be the center gene for gene linkage occurrence. The phenomenon of this possible gene linkage is contrary to Mendel rules, but it is promising to breed new rice cultivars, of which, the most elite genes in rice might be able to gather in a targeted rice variety.

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A Study on the Re-occurred Reasons of the Bustle Style in the Turn of a Century -Centering: around France from the 17th to the 20th century- (세기말에 나타난 버슬 스타일의 재등장 원인에 관한 연구 -17~20세기 프랑스를 중심으로-)

  • 김은하;정흥숙
    • Journal of the Korean Society of Costume
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    • v.52 no.1
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    • pp.145-158
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    • 2002
  • The so-called 'Bustle'which was a support put on waist to heave the side the buttocks means the grandiloquent style to express to ideal body. Bustle style. one of the outstanding and remarkable fashion trends in the late 20th century, has significant meaning in fashion history. This is because not only the style has the longest history, but also it has been periodically repeated every end of a century from the 17th to the 20th century. To analyse to cause the Bustle style was shown, I studied first the sign of forthcoming activity of the Bustle style, the change of the Bustle style shown In the times at the end of century and feature of the Bustle style. Based on the previous reasons of appearance of the Bustle style In the history. there are two similarities. First. reaction led to an occurrence of the reactionary tendency, the Bustle style as they were eager for the past because of a feeling of uneasiness about a coming century. Second, the principle of retrogression led to an occurrence of the Bustle style craving for new style. This Bustle style welch was reaction from being tired of the former fashion appeared to expression a desire for new style. In short, Bustle style was an intermediation between different histories and the basis for continuous development of new eras. rather than lust a part of classicism.

Contamination of Fusarium Mycotoxins in Corn Samples Imported from China (중국으로부터 수입한 옥수수에서의 Fusarium 진균독소오염)

  • Kang, Hyo-Jung;Kim, Jin-Cheol;Seo, Jeong-Ah;Lee, Yin-Won;Son, Dong-Hwa
    • Applied Biological Chemistry
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    • v.37 no.5
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    • pp.385-391
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    • 1994
  • The occurrence of Fusarium mycotoxins was surveyed in 68 corn samples imported from China. Four 8-ketotrichothecenes including deoxynivalenol (DON), 15-acetyldeoxynivalenol (15-ADON), 3-acetyldeoxynivalenol (3-ADON), and nivalenol (NIV) were detected in corn. In addition, the corn samples were contaminated with zearalenone (ZEA), fumonisin $B_1$, $(FB_1)$, fumonisin $B_2$, and fumonisin $B_3$. DON, 15-ADON, 3-ADON, ZEA, and $FB_1$ were major contaminants in corn, with mean levels of 277, 34, 37, 39, and 123 ng/g, respectively.

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Occurrence of Powdery Mildew on Tomato Caused by Oidiopsis taurica (L v.) Arnaud (=Leveillula taurica) in Korea (Oidiopsis taurica (L v.) Arnaud (=Leveillula taurica)에 의한 토마토 흰가루병 발생)

  • 강수웅;권진혁;신원교;김희규
    • Korean Journal Plant Pathology
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    • v.11 no.4
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    • pp.380-382
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    • 1995
  • Yellow spot or blotch symptoms on the upper surface of leaf, without the production of velvet-like fungi on the lower surface of leaf as in the gray mold of tomato caused by Cladosporium fulvum, were observed in tomato (cv. Seokwang) plants in May, 1995, in a vinyl-house of the experimental plot of Gyeongnam Provincial Rural Development Administration, Chinju, Gyeongnam, Korea. We identified this disease as powdery mildew of tomato caused by Oidiopsis taurica (L v.) Arnaud (=Leveillula taurica), which was new to Korea. Conidia of the fungus were borne on uni- or bi-septated conidiophores which were developed through the stomata of the tomato leaf. The conidia were slender, clavate and variable in size (31~111.6$\times$13.1 ${\mu}{\textrm}{m}$). The fungal conidia isolated from tomato leaves were inoculated to tomato plants, and the occurrence of the same disease was confirmed based on the symptomatology and the morphology of the pathogen reisolated.

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New Materials of Leptostrobus myeongamensis Kim (Czekanowskiales) from the Upper Triassic Amisan Formation of Nampo Group in Korea

  • Kim, Jong-Heon
    • Journal of the Korean earth science society
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    • v.31 no.5
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    • pp.430-436
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    • 2010
  • Some materials belonging to the Leptostrobus myeongamensis Kim were found in the Upper Triassic Amisan Formation, Nampo Group, Korea. This species is closely associated with the foliage of Czekanowskia ex gr. rigida Heer. Although none of Leptostrobus myeongamensis Kim has been found in organic connection with Czekanowskia leaves, it is considered that they belong to the same taxa based on their common occurrence. The occurrence of Leptostrobus myeongamensis Kim from the Late Triassic floras of Korea is one of the oldest records in the Mesozoic floras found in the world.

3-D Dynamic groundwater-river interaction modeling incorporating climate variability and future water demand

  • Hong, Yoon-Seok Timothy;Thomas, Joseph
    • Proceedings of the Korea Water Resources Association Conference
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    • 2008.05a
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    • pp.67-74
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    • 2008
  • The regional-scale transient groundwater-river interaction model is developed to gain a better understanding of the regional-scale relationships and interactions between groundwater and river system and quantify the residual river flow after groundwater abstraction from the aquifers with climate variability in the Waimea Plains, New Zealand. The effect of groundwater abstraction and climate variability on river flows is evaluated by calculating river flows at the downstream area for three different drought years (a 1 in 10 drought year, 1 in 20 drought year, and 1 in 24 drought year) and an average year with metered water abstraction data. The effect of future water demand (50 year projection) on river flows is also evaluated. A significant increase in the occurrence of zero flow, or very low flow of 100 L/sec at the downstream area is predicted due to large groundwater abstraction increase with climate variability. Modeling results shows the necessity of establishing dynamic cutback scenarios of water usage to users over the period of drought conditions considering different climate variability from current allocation limit to reduce the occurrence of low flow conditions at the downstream area.

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A Study on the Time-Frequency Analysis of Transient Signal using Wavelet Transformation (Wavelet 변환을 이용한 과도신호의 시간-주파수 해석에 관한 연구)

  • 이기영;박두환;정종원;김기현;이준탁
    • Proceedings of the Korean Society of Marine Engineers Conference
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    • 2002.05a
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    • pp.219-223
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    • 2002
  • Voltage and current signals during impulse tests on transformer are treated as non-stationary signals. A new method incorporating signal-processing method such as Wavelets and courier transform is proposed for failure identification. It is now possible to distinguish failure during impulse tests. The method is experimentally validated on a transformer winding. The wavelet transforms enables the detection of the time of occurrence of switching or failure events. After establishing the time of occurrence, the original waveform is split into two or more sections. The wavelet transform has ability to analysis the failure signal on time domain as well as frequency domain. Therefore, the wavelet transform is superior than courier transform to analysis the failure signal. In this paper, the fact was proved by real data which was achieved.

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First Occurrence of Chromis albicauda (Pomacentridae, Perciformes) from Jeju Island, and Re-assignment of Yellow Chromis Specimens from Korea

  • Song, Young Sun;Kim, Jin-Koo;Kim, Byung-Jik
    • Animal Systematics, Evolution and Diversity
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    • v.29 no.3
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    • pp.253-258
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    • 2013
  • Two specimens of Chromis albicauda were collected from Jeju Island, Korea. The species is most similar to C. analis, but is distinguishable by the presence of a white caudal fin when alive, 4-5 scale rows on the anterior portion of the preorbital, and a blackish blotch around anal opening. The results of a molecular analysis based on mitochondrial DNA 16S rRNA sequences confirm that the two individuals are not C. analis but C. albicauda as the genetic distance between the two species is 0.044. A comparison of the two individuals of C. albicauda with yellow chromis shows that none of the previously reported yellow chromis is C. analis, but rather they are C. albicauda. Herein, we suggest the new Korean name "Huin-ggo-ri-no-rang-ja-ri-dom" for C. albicauda.

An Experimental Study on the Mortar Using Waste Foundry Sand as Fine Aggregate (잔골재로 폐주물사를 이용한 모르타르의 특성에 관한 실험적 연구)

  • Park Bo-Yeol;Jung Jae-Ho;Ryu Hyun-Ki
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2006.05a
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    • pp.71-75
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    • 2006
  • Problem of the environmental pollution and pollution by vast quantity occurrence of industrial waste by progress of industry is risen recently. Is real condition that waste foundry sand to be industrial waste that happen in casting industry of them has much the occurrence amount and the processing method is depending on most simplicity reclamation and so on. Therefore, by using waste foundry sand in the world by fine aggregate for mortar in recycling side of industrial waste necessity of development for new principal parts aggregate is risen along with rise of aggregate price by exhaustion phenomenon of natrual resources, wish to analyze physical and mechanical properties special quality and foretell practical use possibility availability.

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Protective Relaying Algorithm for Transformer Using Neuro-Fuzzy based on Wavelet Transform (웨이브렛 변환 기반 뉴로-펴지를 이용한 변압기 보호계전 알고리즘)

  • Lee Jong-Beom;Lee Myoung-Rhun
    • The Transactions of the Korean Institute of Electrical Engineers A
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    • v.54 no.5
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    • pp.242-250
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    • 2005
  • This paper proposes a new protective relaying algorithm using Neuro-Fuzzy and wavelet transform. To organize advanced nuero-fuzzy algorithm, it is important to select target data reflecting various transformer transient states. These data are made of changing-rates of Dl coefficient and RSM value within half cycle after fault occurrence. Subsequently, advanced neuro-fuzzy algorithm is obtained by converging the target data. As a result of applying the advanced neuro-fuzzy algorithm, discrimination between internal fault and inrush is correctly distinguished within 1/2 after fault occurrence. Accordingly, it is evaluated that the proposed algorithm can effectively protect a transformer by correcting discrimination between winding fault and inrushing state.