• Title/Summary/Keyword: growing stages

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Changes of Nitrogen Compouds and Free Amino Acid of Mung-bean Sprout (녹두나물 성장과정중의 실소화합물과 유리아미노산의 변화에 관한 연구)

  • 김경자
    • Journal of the Korean Home Economics Association
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    • v.19 no.1
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    • pp.25-31
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    • 1981
  • The changes of various nitrogenfractions and free amino acid composition were investigated at various growing stages. The results are summarized as follows 1) Total nitrogen, water soluble protein nitrogen, and true protein nitrogen were decreased with growth. 2) Free amino acid increased with sprout-growth. the content of free amino acid were about 74.4%(combined Ser, Asp, Arg, Val) after 4 day sprout. It is belived that serine, aspartic acid, arginine and valine play an important role as taste compounds in mungbean sprout. 3) 16kinds of amino acid, including essential amino acids in human nutrition except tryptophan and cystin were quantified.

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Effects of Nutrient Solution Concentrations for Each Growing Stages on Beet(Beta vulgaris L. var. detroit) Growth (생육단계별 배양액농도가 비트(Beta vulgaris L. var. detroit)의 생육에 미치는 영향)

  • 박권우;강호민;박용건
    • Proceedings of the Korean Society for Bio-Environment Control Conference
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    • 1996.10a
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    • pp.58-59
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    • 1996
  • 생활수준이 높아지면서 수경재배된 신선채소의 수요가 늘어나고 있으며, 비트와 같은 서양근채류의 이용도 증가하는 추세여서 근채류의 양액재배도 증가하리라 기대된다. 특히 비트의 경우 색소의 원료로도 이용이 많으므로 재배가 늘 것으로 보인다. 비트는 중성 내지 약알칼리성 토양에서 생육이 가장 좋은 것으로 알려져 있는데. 현재 국내 대부분의 밭토양은 산성이므로 비트 재배에 적함하지 않다고 본다. (중략)

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A Review of the Last Century Construction Failures and the Observational Method in Geotechnical Engineering (지반과 관련된 지난 세기의 건설사고와 정보화 시공)

  • 김학문
    • Proceedings of the Korean Geotechical Society Conference
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    • 2000.03c
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    • pp.1-36
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    • 2000
  • Construction incidents, mechanisms and causes in Geotechnical Engineering have been closely reviewed for the safety assurance during design and construction stages. The safety assurance is clearly related to the observational method in which design is reviewed during construction and contingency actions are undertaken successfully to minimise any potential failures. The observational method has been extensively applied for the construction of subways underground structures, dams and many important Civil Engineering projects in the past 20 years. But the number of serious construction incidents are growing for the past several decades. Therefore present development of observational method and improvement techniques are introduced with some case histories.

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Occurrence of Potato Witches' Broom Caused by a Phytoplasma in Korea (파이토플라스마에 의한 감자빗자루병 발생)

  • 함영일;류경열;조일찬
    • Research in Plant Disease
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    • v.7 no.2
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    • pp.116-119
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    • 2001
  • Witches' broom symptoms were firstly found on tubers of Solanum tuberosum cv, Deijima, showing dense growth of spindly sprouts in Cheju province, Korea. Plantlets from the diseased plants also produced the typical witches' broom symptoms, having densely-growing small leaves when they became adult plants. At the later stages the diseased leaves were blightened. Presence of phytoplasma in plant tissues was confirmed by DAPI-staining fluorescence microscopy and electron microscopy, exhibiting its localization in sieve tubes of stem, petiole, and midrib. This is the first report of potato witches' broom in Korea.

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How to Finance Fashion Venture Business at Start-up and Growing Stages

  • Kim, Moon-Sook
    • The International Journal of Costume Culture
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    • v.3 no.2
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    • pp.88-99
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    • 2000
  • Venture industry is becoming a driving force of Korean economy in the digital age of the 21 st century. The success of venture business depends on innovative technology, capital investment, and optimal environment providing industrial flexibility. Although venture business is starting to settle down in Korea, many barriers and challenges still remain. The current study analyzes the present status of venture business including fashion business and issues concerning the venture fund raising and provides prospective views to promote and improve venture industry in Korea.

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Susceptibility of Different Life-stages of Freshwater Prawn, Macrobrachium rosenbergii to White Spot Syndrome Virus: An Experimental Study

  • Kiran, R.B.P.;Rajendran, K.V.;Jung, S.J.;Oh, M.J.
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2001.05a
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    • pp.524-525
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    • 2001
  • White spot syndrome virus (WSSV) causes the most serious epizootic in cultured penaeid shrimp. The epizootic started in 1992, and spread through east and south east Asia and into other shrrimp growing countries of the region. In order to circumvent the epizootic, in many Asian countries, freshwater prawn, Macrobrachium rosenbergii is being widely considered as an alternative species to marine shrimp. (omitted)

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Physiological studies on cell division by the technique of synchronous culture of chlorella (I) (클로렐라의 동조배양법에 의한 세포분열의 생리학적 연구 1)

  • 이영녹;이종삼
    • Korean Journal of Microbiology
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    • v.7 no.1
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    • pp.1-9
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    • 1969
  • Changes in the phosphorylation of Chlorella cells during the life cycle the aulotrophic and micotrophic synchronous culture were followed under the light and dark. 1. In the autotrophic culture of Chlorella the amounts of esterified phosphate compounds of the algal cell under the light increased during the growing period and decreased strikingly in the ripening period showing a peak at the $L_1$ i/-cell stage. 2. TRhe amount of total esterified phosphate compounds of the cell under the dark, however, decreased during the growing period and then kept fairly constnat during the ripening nad division periods showing the greates activity of the oxidative phosphorylation in the early growing stage. 3. It is presumed that the energy requirement of the dividing algal cell in the autotrophic culture is fulfilled prior to the nuclear division mostly by the photosynthetic phosphorylation. 4. In the mixotrophic culture, the amount of esterified phosphate compounds of the algal cells under the light increased during the growing period and decreased during the late ripening and early division periods showing a peak in the $L_2$-cell stage as in the case of the phosphorylation under the dark. 5. The phosphorylation of the fell grown in the glucose medium is more active under the dark than under the light in the stages of the growing and early ripening periods. 6. It is considered that the excess glucose in the algal cell not only promotes the oxidative phosphorylation but also inhibits the photosynthetic phosphorylation of the cell. 7. It is presumed that the energy requirement of the dividing algal cell in the glucose medium is fulfilled prior to the nuclear division by the combined action of oxidative and photosynthetic phosphorylation, mostly by the oxidative phosphorylation.

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Expression of Growth Differentiation Factor-9 in the Mouse Ovaries at Different Developmental Stages (생쥐 난소의 발생단계에 따른 Growth Differentiation Factor-9의 유전자 발현)

  • 윤세진;이경아;고정재;차광열
    • Development and Reproduction
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    • v.3 no.1
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    • pp.95-100
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    • 1999
  • Growth differentiation factor-9 (GDF-9) is a member of the transforming growth factor $\beta$ (TGF-$\beta$) superfamily. It has been known that GDF-9 is a growth factor having a crucial role in normal folliculogenesis and its expression is oocyte-specific. The present study was aimed to elucidate the expression of GDF-9 mRNA in the mouse primordial follicles as well as in the other developmental stages. The semiquantitative analysis of GDF-9 mRNA expression was conducted. Total RNA was extracted from the ICR mice ovaries at gestational day 19, postnatal day 1, day 10, day 21, and day 28, and RT-PCR was performed to measure GDF-9 and $\beta$-actin mRNA levels. Level of GDF-9 mRNA were normalized against the level of $\beta$-actin mRNA, and compared among different stages. GDF-9 mRNA was detected in all samples including the fetal ovaries that mainly consists of primordial follicles. The highest level of mRNA was observed in ovaries obtained at day 10 that mainly consists of growing follicles. The present result suggests that GDF-9 may play an important role in the early stage of folliculogenesis.

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