• Title/Summary/Keyword: 하순

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이삭도열병, 흰잎마름병 발생증가 - 잦은 강우가 발생호조건으로 작용

  • 이영희
    • The Bimonthly Magazine for Agrochemicals and Plant Protection
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    • v.7 no.6
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    • pp.33-38
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    • 1986
  • 한 해의 농사를 마무리짓는 이 시점에서 ''86년도 병해발생상황을 살펴본다는 것은 내년도의 방제계획을 보완한다는 점에서 매우 뜻깊은 계기가 될 것이다. 금년은 매우 특이한 기상으로 초봄에는 충분한 강우로 이앙을 순조롭게 마칠 수 있었으며 이앙초기에는 평년에 비하여 약간 기온이 높았지만 병해초발은 예년과 같이 시작되었다. 그러나 6월 하순과 7월의 저온으로 본논의 초기 및 중기 병해발생은 아주 적은 편이었지만 생육후기에는 잦은 강우로 이삭도열병, 흰잎마름병 등의 발생량이 증가한 반면에 잎집무늬마름병 발생은 아주 적은 해였다. 중$\cdot$만생종 출수기에 특히 남부지방에서 문제시되었던 것은 태풍 Vera호의 건풍동반으로 백수현상이 지역적으로 심한 발생을 보여 수고성 및 흰잎마름병 발생에도 영향을 주었을 것으로 생각된다. 여기서는 금년도 주요병해의 발생특징을 분석해 보고 문제점을 잘 파악하여 내년도의 방제자료로 삼고자 한다.

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해양 유래 Pseudomonas aeruginosa BYK-2(KCTC 18012P)가 생산하는 Biosurfactant의 구조분석

  • Lee, Gyeong-Mi;Kim, Hak-Ju;Ha, Sun-Deuk;Gang, Yang-Sun;Gong, Jae-Yeol
    • 한국생물공학회:학술대회논문집
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    • 2000.11a
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    • pp.626-629
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    • 2000
  • The Pseudomonas aeruginosa BYK-2(KCTC 18012p) produced three kinds of glycolipids on olive oil as a substrate and purified two types of major glycolipids(Rf=0.48, BS-1; Rf=0.65, BS-2) using silica gel chromatography, TLC, HPLC, etc. From the analysis of the chemical structure, the glycolipid of BS-1 was estimated as rhamnolipid($2-O-{\alpha}-L-rhamnopyranosyl- {\alpha}-L-rhamnopyranosyl-{\beta}-hydroxyldecanoyl-{\beta}-hydroxydecanoic$ acid; M.W. 650) and BS-2 was detected as rhamnolipid methyl ester($2-O-{\alpha}-L-rhamnopyranosyl-{\alpha}-L-rhamnopyranosyl-{\beta}-hydroxyldecanoyl-{\beta}-hydroxydecanoic$ acid methyl ester; M.W. 664) by FT-IR, FAB Mass spectrometry, $^1H-NMR$, $^{13}C$ FT-NMR, DEPT, 2D-NMR (TOCSY, RELAY, NOESY, HSQC, HMBC). In particular, It was found that a marine bacterium Pseudomonas aeruginosa BYK-2(KCTC 18012P) remarkably produced rhamnolipid and rhamnolipid methyl ester simultaneously.

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고온 흙붙이 초전도체, $Y_1$$B_A2$$Cu_u3$$O_x$ 그 구조와 물성

  • 유한일
    • 전기의세계
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    • v.37 no.2
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    • pp.28-42
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    • 1988
  • 본고에서는 실험변수(T,$o_{2}$/; over dot T)가 초전도 전이에 어떻게 영향을 끼치는가에 대하여 구조와 물성을 관련지우는 재료과학적 측면에서 살펴보고자 한다. 이를 위하여 우선 Y, Ba-Cu-O계에서 초전도체가 되기 위한 화학 조성 및 결정 구조상의 필요조건을 살펴보고, 주어진 양이온 조성 $Y_{1}$B $a_{2}$C $u_{3}$ $O_{x}$에 있어서 초전도 전이에 결정적인 역할을 하는 산소 음이온의 함량(x)조절에 대하여 열역학 및 동력학(kinetics)적 측면에서 논의한다. 본고의 내용은 1987년 11월말 현재까지 글쓴이가 얻을 수 있었던 지극히 제한된 수의 preprint, 또는 잡지에 발표된 논문과 10월 하순 하와이에서 개최된 제 172차 미국전기화학회에서 보고된 고온 초전도체에 관한 연구결과를 바탕으로 하였음을 밝혀둔다.

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Hypersensitivity to Local Anesthetics: A Case Report (국소마취제로 인한 과민반응 : 증례 보고)

  • Rah, Yujin;Lee, Jewoo;Ra, Jiyoung
    • Journal of the korean academy of Pediatric Dentistry
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    • v.44 no.3
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    • pp.365-369
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    • 2017
  • Local anesthetics are widely used in clinical dentistry. However, while rare, there have been some reports of true hypersensitivity to local anesthetics. A case of hypersensitivity in a 26-month-old boy is reported. After administering local anesthesia with lidocaine, treatment was performed while the patient was under oral sedation. After treatment, the patient presented with lower lip edema. Treatment with anti-histamines and a steroid successfully reversed his symptoms.

Studies on the Seasonal Occurrences and Several Insecticides for Control of the Mulberry Thrips, Pseudodendrothrips mori NIWA(Thysanoptera: Phloeothripidae) (뽕나무 총채벌레의 발생소장과 수종살충제 처리효과)

  • 백현준
    • Journal of Sericultural and Entomological Science
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    • v.18 no.2
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    • pp.61-64
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    • 1976
  • Experiments had been carried out in Suweon area from 1972 to 1973 to determine the seasonal fluctuation of Pseudodendrothrips mori NIWA using direct counts and to know the effects of chemicals for its control. 1. The fluctuation of mulberry thrips was especially influenced by precipitation and number of hours with sunshine in the meteological conditions. The peaks of fluctuation occurred several times but the highest peak occurred in late August. 2. The mulberry thrips was distributed in the range of the 4th to 16th leaves from the apex in a branch. The highest density leaves were 6th to 12th. 3. Orthene, Metasystox were the most effects on the mulberry thrips.

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Isolation and Its Optimal Culture Condition for High Agarase-Producing Mutant (한천분해효소의 고생산성 변이주의 분리 및 최적배양조건)

  • 황선희;하순득;김봉조;김학주;공재열
    • KSBB Journal
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    • v.14 no.3
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    • pp.351-357
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    • 1999
  • A marine bacterium Bacillus cereus ASK202, agarase producing strain, was treated with some mutagenic agents, ultraviolte(UV), 1-methyl-3-nitro-1-nitrosoguanidine(NTG), and ethyl methane sulfonate(EMS), several times for the increasing of the agarase production After mutagen treatment, we isolated one mutant strain treated with NTG showed the highest stability and agarase productivity and named as Bacillus cereus ASK202-N3. This Bacillus cereus ASK202-N3 strain was well grown in the modified marine medium containing 0.5%(w/v) agar, 0.3%(w/v) yeast extract, and 5.0%(w/v) NaCl, and the optimal initial pH, temperature and culture time were 7.8, $25^{\circ}C$ and 32h, respectively. In the optimal culture conditions, the agarase production was increased to 5.3 fold(850units/L) compared to that of the wild type.

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Effects of Rhizome Size and Mulching Materials on Agronomic Characteristics and Yield in Zingiber mioga ROSC. (양하(Zingiber mioga ROSC.) 지하경 크기와 피복재료가 주요형질과 수량에 미치는 영향)

  • 최성규;이종일
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.38 no.2
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    • pp.112-116
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    • 1993
  • The experiment was carried out to investigate the influence of rhizome size and mulching materials on some agronomic characters and flower-head yield of Gingiber mioga ROSCOE. The larger the size of rhizome was, the more the number of leaves developed, and the higher the yield was. The most suitable rhizome size for planting was found to be from I2cm to 15cm. Rice straw and polyethylene film mulching materials increased the soil porosity and reduced change of the soil moisture content. The yield of flower-head was highest in the straw-mulching plot, indicating that straw would be the best mulching material for growth and yield of flower-head in Gingiber mioga ROSCE.

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Studies on a Korean Unrecorded Pamphilid -sawfly (hymenoptera, Symphyta ) Feeding on Korean Pine(II) -The life history (잣나무를 식해하는 한국미기록종 넓적잎벌(막혈목, 광요아목) 에 관한 연구(II)-생활사)

  • 이덕상
    • The Korean Journal of Zoology
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    • v.5 no.1
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    • pp.21-29
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    • 1962
  • 본논문은 경기도광릉시험장에서 잣나물을 식해하는 잣나무넓적잎벌의 생활사를 1958-1961년에 조사연구한 것을 보고하는 것이다. 본충의 생활사에 대한 연구는 동양에서 아직 보고된 바 없다. 1) 광릉에서는 6월중순부터 7월 하순에 걸쳐서 성충이 출현한다. 생활기간은 성충이 5(웅)-6(자)일, 란이 약 6일, 유충이 약 23일, 전용이 약 10.5개월, 용이 약 8일이다. 2) 산란은 신생침엽의 내측에 행하고, 1자충의 산란수는 38립가량되고, 일란을 산촌하는데 소요되는 시간은 약 3분간이다. 3) 유충은 5령을 경과한다. 유충은 토사에 의하여 침엽을 얽어서 집을 만든다. 이 소내에 보통 1마리의 유충이 서식한다. 4) 유충의 식초는 한국에 있어서는 잣나무뿐이다.

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Occurrence of Japanese Gall-forming Thrips, Ponticulothrips diospyrosi Haga et Okajima(Thysanoptera:Phlaelthripidae) in Korea (감관총채벌레(신칭:Ponticulothrips diospyrosi Haga et Okajima)(Thysanoptera:Phlaelthripidae)의 발생)

  • Lee, Kyu-Chul;Park, Chung-Gyoo;Choo, Ho-Yul;Choo, Ho-Yul;Woo, Kun-Suk;Kang, Chang-Heon
    • Korean journal of applied entomology
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    • v.41 no.1
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    • pp.1-4
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    • 2002
  • A thysanopteran pest pest was collected from the damaged leaves of Fuyu persimmon (Diospyrosi kaki) at Changwon, Gyeongnam province in June, 2000. The thrips was identified as Japanese gall-forming thrips, Ponticulothrips diospyrosi(Phlaeothripidae). which is newly recorded in Korea. Brief morphological and ecological characters, damage symptoms, and distribution in Gyeongnam province were provided.

BILI-Hardware/Software Partition Heuristic (BILI-하드웨어/소프트웨어 분할 휴리스틱)

  • Oh Hyun-Ok;Ha, Soon-Hoi
    • Journal of the Institute of Electronics Engineers of Korea SD
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    • v.37 no.9
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    • pp.66-77
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    • 2000
  • This paper presents a fast partitioning heuristic for hardware/software codesign called Best Imaginary Level-Iterative(BILI) partitioning which iteratively applies BIL heterogeneous multiprocessor scheduling heuristic to minimize the cost within the given time constraint. The proposed algorithm solves the partitioning problem with the implementation bin selection problem as well as architectures with multiple software modules. It costs about 15% less than the GCLP and at most about 5% more than the optimal solution obtained by the Integer Linear Programming(ILP) algorithm.

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