• Title/Summary/Keyword: Seed grain

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Microstructural investigation of the electroplating Cu thin films for ULSI application (ULSI용 Electroplating Cu 박막의 미세조직 연구)

  • 박윤창;송세안;윤중림;김영욱
    • Journal of the Korean Vacuum Society
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    • v.9 no.3
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    • pp.267-272
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    • 2000
  • Electroplating Cu was deposited on Si(100) wafer after seed Cu was deposited by sputtering first. TaN was deposited as a diffusion barrier before depositing the seed Cu. Electroplating Cu thin films show highly (111)-oriented microstructure for both before and after annealing at $450^{\circ}C$ for 30min and no copper silicide was detected in the same samples, which indicates that TaN barrier layer blocks well the Cu diffusion into silicon substrate. After annealing the electroplating Cu film up to $450^{\circ}C$, the Cu film became columnar from non-columnar, its grain size became larger about two times, and also defects density of stacking faults, twins and dislocations decreased greatly. Thus the heat treatment will improve significantly electromigration property caused by the grain boundary in the Cu thin films.

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Effect of Cultural Methods on Seed Production in Summer Type Soybeen (하대두 재배방법의 차이가 종자생산에 미치는 영향)

  • Kim, Doo-Youl;Kim, Kwang-Ho;Hong, Cheong-Ki;Lee, Seong-Yeul;Lee, Han-Bum;Huh, Beam-Lyang
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.35 no.4
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    • pp.342-351
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    • 1990
  • Experiments were conducted to find out the possibilities of producing good quality seed of summer type soybean at Chuncheon, 74m above sea level and Jinboo, 600m above sea level in 1987. Local variety, Cheonan Jaelae was used. Seeds were sown June 25 harvested five times from 35 days after flowering with five days interval to 55 days. Vegetative period was longer in the early planting and high cool area, Jinboo, which resulted longer stem length than the late planting and in the plain area, Chuncheon. Pod number and 100 grain weight were shown more and heavier in Jinboo. Earlier planting and later harvesting resulted more pod number and heaveier 100grain weight. Grain yield was heigher in Jinboo, and earlier plainting shown more grain yield and its difference was greater in Jinboo. Long grain filling duration resulted more grain yield. Unripened seeds were produced more by earlier planting with earlier harvesting and earlier planting with late harvesting showed the high rates of pod and stem blight (Diaporthe Phaseolorum). Seed With high moisture content by early harvesting showed more rotten seeds in all planting dates production was more advantageous in the high cool area, Jinboo. Optimum planting date was between May 15 and June 5. Harvesting was desirable about 45-50 days after flowering with heigher germination rate seed yield.

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Epitaxial Growth of Boron-doped Si Film using a Thin Large-grained Si Seed Layer for Thin-film Si Solar Cells

  • Kang, Seung Mo;Ahn, Kyung Min;Moon, Sun Hong;Ahn, Byung Tae
    • Current Photovoltaic Research
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    • v.2 no.1
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    • pp.1-7
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    • 2014
  • We developed a method of growing thin Si film at $600^{\circ}C$ by hot wire CVD using a very thin large-grained poly-Si seed layer for thin-film Si solar cells. The seed layer was prepared by crystallizing an amorphous Si film by vapor-induced crystallization using $AlCl_3$ vapor. The average grain size of the p-type epitaxial Si layer was about $20{\mu}m$ and crystallographic defects in the epitaxial layer were mainly low-angle grain boundaries and coincident-site lattice boundaries, which are special boundaries with less electrical activity. Moreover, with a decreasing in-situ boron doping time, the mis-orientation angle between grain boundaries and in-grain defects in epitaxial Si decreased. Due to fewer defects, the epitaxial Si film was high quality evidenced from Raman and TEM analysis. The highest mobility of $360cm^2/V{\cdot}s$ was achieved by decreasing the in-situ boron doping time. The performance of our preliminary thin-film solar cells with a single-side HIT structure and $CoSi_2$ back contact was poor. However, the result showed that the epitaxial Si film has considerable potential for improved performance with a reduced boron doping concentration.

Proteomics Approach on Puroindoline Gene of Pre-harvest Sprouting Wheat

  • Kamal, Abu Hena Mostafa;Park, Cheol-Soo;Heo, Hwa-Young;Chung, Keun-Yook;Cho, Yong-Gu;Kim, Hong-Sig;Song, Beom-Heon;Lee, Chul-Won;Woo, Sun-Hee
    • Korean Journal of Breeding Science
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    • v.41 no.3
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    • pp.205-212
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    • 2009
  • Wheat (Triticum aestivum L.) grain texture is an important determinant of milling properties and end product use. Two linked genes, puroindoline a (PINA) and puroindoline b (PINB), control most of the genetic variation in wheat grain texture. Wheat seed proteins were examined to identify PINA and PINB gene using two pre-harvest sprouting wheat cultivars; Jinpum (resistant) and Keumgang (susceptible).Wheat seed proteins were separated by two-dimensional electrophoresis with IEF gels over pH ranges: pH 3-10. A total of 73 spots were digested with trypsin resulting peptide fragmentation were analyzed by matrix assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF/MS). Mass spectra were automatically processed and searched through NCBInr, SWISS-PORT and MSDB database with mono isotopic masses and complete gene sequence were found by UniProt database. Puroindoline a and puroindoline b that is responsible for grain texture related with baking performance and roughness. Two spots were found Pin b (16.7 kDa) and Pin a (16.3 kDa) in Jinpum compare to seven spots were identified Pin a (16.1 kDa, 16.3 kDa) and Pin b (16.7 kDa, 9.5 kDa and 14.4 kDa) in Keumgang. Some selected spots were identified puroindoline like grain softness protein (16.9 kDa, 17 kDa and 18.1 kDa) in Keumgang. Moreover, to gain a better inferring the identification of puroindoline related proteins using proteomics, we accomplished a complete gene sequence of PINA and PINB gene in pre-harvesting sprouting wheat seeds between resistant (Jinpum) and susceptible (Keumgang).

Characterization of Poly-Si TFT's using Amorphous-$Si_xGe_y$ for Seed Layer (Amorphous-$Si_xGe_y$을 seed layer로 이용한 Poly-Si TFT의 특성)

  • Jung, Myung-Ho;Jung, Jong-Wan;Cho, Won-Ju
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2007.06a
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    • pp.125-126
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    • 2007
  • Polycrystalline silicon thin-film-transistors (Poly-Si TFT's) with a amorphous-$Si_xGe_y$ seed layer have been fabricated to improve the performance of TFT. The dependence of crystal structure and electrical characteristics on the the Ge fractions in $Si_xGe_y$ seed layer were investigated. As a result, the increase of grain size and enhancement of electrical characteristics were obtained from the poly-Si TFT's with amorphous-SixGey seed layer.

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Growth Characteristics and Productivity of Single Cross Maize Hybrid for Grain, 'Andaok' (다수성 종실 옥수수 신품종 '안다옥'의 생육특성과 수량성)

  • Son, Beom Young;Baek, Seong Bum;Kim, Jung Tae;Lee, Jin Seok;Ku, Ja Hwan;Kwon, Young Up;Huh, Chang Suk;Park, Jong Yeol
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.33 no.1
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    • pp.1-5
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    • 2013
  • Andaok, a new single cross variety, is a yellow dent maize hybrid (Zea mays L.) developed by the maize breeding team at the National Institute of Crop Science (NICS), RDA in 2011. This hybrid, which has a high yield of grain, was produced by crossing two inbred lines, KS161 and KS162. KS161 is the seed parent and KS162 is the pollen parent of Andaok. Silking date of Andaok is 3 days later than that of the check hybrid, Jangdaok. Plant height of Andaok is longer than that of Jangdaok. Ear numbers per 100 plants of Andaok is more than that of Jangdaok. Ear length of Andaok is shorter than that of Jangdaok. The weight of 100 seeds of Andaok is heavier than that of Jangdaok. It has moderate resistance to southern corn leaf blight (Bipolaris maydis), black streaked dwarf virus (BSDV) and corn borer. It has strong resistance to northern corn leaf blight (Exserohilum turcicum). It has resistance to lodging. Andaok was evaluated for its yield of grain at three locations from 2009 to 2011. The grain yield of Andaok was 7.80 ton/ha. Seed production of Andaok has gone well due to a good match during crossing between the seed parent, KS161, and the pollen parent, KS162, in Yeongwol.

Seed Production Studies in Italian Ryegrass ( Lolium multifiorum Lam. Italicum ) III. Effects of Autumn and Spring Defoliation on Seed Yield of Italian Ryegrass (이탈리안 라이그라스의 종자생육에 관한 연구 III. 추.춘 청예이용이 종실수량에 미치는 영향)

  • 박병훈;박희길;배상태;강정훈;이남종
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.7 no.1
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    • pp.49-54
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    • 1987
  • Information is needed on the plant characteristics affects by forage removal and their relationships to grain yield of italian ryegrass in order to combine herbage seed crop management and livestock farming. This study with tetraploid cv. Tetrone was carried out on the experimental field of Haenam Branch Station. treatments included two different seeding time, cutting time and frequency. Seeds were sown in row 50 cm width within the rows. The results are summarized as follows: 1. Fresh and dry matter were increased significantly in plots defoliated lately and many times but seed yield components were decreased significantly in plots defoliated in spring. 2. Autumn defoliation had no significant effect on the seed yield but seed yield were decreased significantly in plots defoliated later than 8 April. 3. Excess vegetative growth can be removed in autumn and early spring without harm to the seed crop and the most important aspect of its removal is the timing of the operation. 4. Seed yield reductions were accompanied by the decrease of inflorescences,seeds/spike, and thousand seeds weight, due to an increase in apex removal of vigorous tillers by late cutting.

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Rapid identification of Burkholderia glumae from diseased seeds

  • Noh, Tae-Hwan;Song, Wan-Yeob;Kang, Mi-Hyung;Hyung Moo kim;Lee, Du-Ku;Park, Jong-Cheol;Shim, Hyeong-Kwon
    • Proceedings of the Korean Society of Plant Pathology Conference
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    • 2003.10a
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    • pp.136.1-136
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    • 2003
  • Bacterial grain rot by Burkholderia gluae cause severe damage in seedling and grain of rice after heading season. This seed-borne pathogen play a role as first infection agent that could be cause disease following cropping season. Until now the direct isolation of the bacteria has some trouble by interference of other bacteria existed inside seed. This study established convenient identification method as simple isolation with KB medium from seed showing symptom and using PCR identification. By this isolation method, B. glumae was isolated from 40 to 50% in brown rice and inner hull, however, there were saprophytic bacteria and fungi outer hull. In PCR identification with Ogf4 and Ogr3 primer to these 25 isolates, the amplified products were presented in all of the collections but not in 10 saprophytic germs. The isolation rate was constant to 3 months stored seeds. This result provide a rapid and convenient isolation and identification of B. glumae.

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Influence of Infrared Radiationon Sowing Quality and Growth Indicators of Winter Wheat Plants

  • Chervinsky, L.;Storozhuk, L.;Pashkovska, N.
    • The Korean Journal of Food & Health Convergence
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    • v.6 no.1
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    • pp.17-20
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    • 2020
  • Wheat is the most abundant crop in the world, accounting for one third of the world's population diet. In Ukraine, wheat is in fact, in addition to its nutritional value, a national symbol of the state. Therefore, the main thesis on the development of modern plant growing in Ukraine is the reduction of costs and the introduction of innovative technologies. The quality of grain and seed depends on many factors, namely: agro-climatic conditions, sowing condition of the seed material, quality characteristics of the soil, yielding properties of seeds, pre-sowing seed treatment. etc. For this purpose, the photosynthesis and intensity of photosynthesis need to be limited to the width of the leaf and the height of the leaves by a smaller cut of the stem. It is extremely important to ensure that the head and side pagons of wheat are in good condition. All parameters are often secured by the technology of grain preparation before delivery. Prior to this technology, it is possible to introduce processing of the material in the form for the development of the material. This article presents the effectiveness of the use of infrared irradiation for the pre-sowing treatment of winter wheat seeds in Sekobra Research, Germany.

Dielectrical Properties of ZnO Varistor Fabricated by the Method of 3-Composition Seed Grain (3-성분 종입자법으로 제조된 ZnO 바리스터의 유전특성)

  • Kim, D.Y.;Jeong, I.H.;Cho, A.H.;Jang, K.W.;Lee, J.W.
    • Proceedings of the KIEE Conference
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    • 1991.11a
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    • pp.316-320
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    • 1991
  • The dielectric properties of the ZnO varistor fabricated by the method of 3-composition seed grain was studied. In this paper, we present the C-V charateristic for the specimen. The dielectric constant and disppation which changed with additives may be explained on the basis of the deplation layer; the presence of deplation layer has been inferred by donor and state density obtained from the $1/C^2$ vs. V.

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