• Title/Summary/Keyword: 93

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Nylon 66 Viscosity Effect on Mechanical Properties of Nylon 66/Cloisite 93A Nanocomposite (Nylon 66/Cloisite 93A 나노복합체의 기계적 성질에 대한 Nylon 66 점도 효과)

  • Park, Sang-Cheol;Kim, Ho-Gyum;Min, Kyung-Eun
    • Polymer(Korea)
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    • v.37 no.1
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    • pp.100-112
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    • 2013
  • It is found that the commercialization of nylon 66/Cloisite 93A nanocomposite by applying melt intercalation is possible in the composite production facilities of the pilot scale which has been generalized today. The strength and modulus under tensile and flexural stress have been improved with the introduction of Cloisite 93A in nylon 66. Furthermore, it is found through the analysis of morphologic and crystallization behavior that the elements such as content of Cloisite 93A, viscosity of nylon 66 and the crystallization behavior have significantly influences on the characteristics of nanocomposite.

Classification and Characterization of Bacteriophages of Lactobacillus casei -Analysis of Restriction Patterns of Phage DNA- (Lactobacillus casei bacteriophage의 분류 및 특성에 관한 연구 - Phage DNA의 제한효소 절편 비교 분석-)

  • 김영창;강현삼
    • Korean Journal of Microbiology
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    • v.23 no.2
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    • pp.115-121
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    • 1985
  • Five representative virulent phages (J1, TK93, K1, PD5, and CP1) and one temperate phage (.phi.1043) of Lactobacillus casei were compared to each other by analyzing the agarose gel electrophoretic patterns of restriction enzyme-digested phage DNAs. Nucleic acids of all the tested phages were double stranded DNA. DNAs of J1, TK93, K1, and ${\phi}$ 1043 phages had a size of about 42kb, but the size of PD5 and CP1 DNAs was avout 140kb. J1, TK93, K1, PD5, CP1, and ${\phi}$ 1043 DNAs were digested to 13, 13, 11, 14, 14, and 12 fragments by EcoR1, respectively, and showed its characteristec restriction patterns. Cohesive ends were present in J1, TK93, and ${\phi}$ 1043, but were absent in K1, PD5, and CP1. Restriction maps of J1 and TK93 DNAs showed nearly complete homology and their evolutionary relationship based upon the restriction analysis was discussed.

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Comparison of Productivity and Temperature type of fruiting body of Lentinula edodes strains on the Sawdust Cultivation (표고 톱밥재배용 교배균주의 자실체 온도형 및 생산성 비교)

  • Noh, Jong-Hyun;Koo, Chang-Duk;Park, Heung-Soo;Ko, Han-Gyu
    • Journal of Mushroom
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    • v.13 no.4
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    • pp.294-300
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    • 2015
  • We cultivated 117 hybrid strains of Lentinula edodes in greenhouse. 5 hybrid strains(07-55, 07-66, 07-84, 07-93 and 07-117) were selected from comparison of their characteristics of fruiting body and productivity. Biological efficiency of 5 hybrid strains was investigated 36.1(07-66), 35.6(07-117), 27.1(07-93), 25.7(07-84) and 6.5%(07-55), respectively. Selected strains 07-66, 07-117 and 07-93 showed high biological efficiency but observed commercially low quality fruiting body. Temperature type of fruiting body of 5 hybrid strains observed as follows high temperature type(07-117), mid temperature type(07-66 and 07-84) and low temperature type(07-55 and 07-93). Temperature type of fruiting body of 07-93 strain has wide range relatively. In the results, 07-84 strain was selected finally with consideration for quality of fruiting body, productivity and temperature type($8-21^{\circ}C$) in farm test.

NO OPEN CLUSTER IN THE RUPRECHT 93 REGION

  • Cheon, So-Ra;Sung, Hwan-Kyung;Bessell, M.S.
    • Journal of The Korean Astronomical Society
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    • v.43 no.4
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    • pp.115-121
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    • 2010
  • UBVI CCD photometry is obtained for the Ruprecht 93 (Ru 93)region. We are unable to confirm the existence of an intermediate-age open cluster in Ru 93 from the spatial distribution of blue stars. On the other hand, we find two young star groups in the observed field: the nearer one (Ru 93 group) comprises the field young stars in the Sgr-Car arm at $d{\approx}2.1$ kpc, while the farther one (WR 37 group) is the young stars around WR 37 at $d{\approx}4.8$ kpc. We derive an abnormal extinction law ($R_V$ = 3.5) in the Ruprecht 93 region.

Improved GRS80 Gravimetric Geoid in the South Korea Region (KGM93) (개선된 남한지역의 GRS80 중력지오이드 모델 (KGM93))

  • 조규전;이영진;조봉환
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.12 no.1
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    • pp.61-68
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    • 1994
  • Neglecting distant zones in the computation of geoidal heights using Stokes'formula give rise to some truncation errors. The GRS80 Korean Gravimetric geoid Model 1993(KGM93) of the South Korea region was implemented, in this paper, using a combination of satellite-derived GEM-T2 gravity and terrestrial gravity data. A spherical cap size of 30 degree is used on the integration and the truncation error is compensated to the free-air geoid. The results of this study show that the accuracy of the KGM93-C has one meter level.

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신경제기간('93년~'97년)의 택지 총점검

  • 한국주택협회
    • 주택과사람들
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    • s.76
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    • pp.93-99
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    • 1996
  • 신경제계획기간(''93년$\~$''97 : 5년)의 확보된 택지를 총점검하고 ''98년 이후에도 수도권 지역의 안정적인 택지확보 및 공급을 위하여 충분한 택지개발가능지를 조사하였음.

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