• 제목/요약/키워드: National Growth

검색결과 23,486건 처리시간 0.048초

Influence of Originated Host and Water Temperature on the Infectivity and Growth of Microcotyle sebastis (Monogenea)

  • Kim Ki Hong;Cho Jae Bum;Park Soo-Il
    • Fisheries and Aquatic Sciences
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    • 제1권1호
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    • pp.79-81
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    • 1998
  • To investigate the influence of originated host and water temperature on the infectivity and growth of Microcotyle sebastis, juveniles of Schlegel's black rockfish (Sebastes schlegeli) were exposed to the eggs of M. sebastis originated from. Schlegel's black rockfish and black rockfish (Sebastes inermis) at $10^{\circ}C$ and $10^{\circ}C$. There were significant differences between the two isolates in the infectivity of eggs, and the growth of worms. The growth of M. sebastis was significantly affected by water temperature, and worms grew faster in $20^{\circ}C$ than in $10^{\circ}C$.

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Effect of 2-NBDG, a Fluorescent Derivative of Glucose, on Microbial Cell Growth

  • Shin, Dong-Sun;Oh, Ki-Bong
    • Journal of Microbiology and Biotechnology
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    • 제12권5호
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    • pp.834-837
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    • 2002
  • A fluorescent glucose analogue,2-[N-(7-nitrobenz-2-ox a-1,3-diazol-4-yl) amino] -2- deoxy-D-glucose (2-NBDG), which had previously been developed for the analysis of glucose uptake in living cells, was investigated to determine its biological activity on microorganisms.2-NBDG did not show any inhibitory effect on growth of yeast cells and bacteria. In contrast, 2-NBDG exhibited strong inhibitory effects on filamentous fungal growth. The growth of filamentous fungi was completely inhibited, when 2-NBDG was supplemented as sole carbon source. The inhibitory effect was decreased by the addition of glucose in the test medium. Furthermore, 2-NBDC inhibited chitinase activity of Trichoderma sp. These results suggested that the inhibitory effects of 2-NBDG on filamentous fungi might be partially due to the inhibition of chitinase.

Inclusive Innovation and Growth Based on a National Innovation System: Experience from China

  • Junfang, Zhang;Rong, Guo;Wei, Zhou
    • STI Policy Review
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    • 제3권2호
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    • pp.66-78
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    • 2012
  • China is becoming a global hot topic because of its rapid economic growth. However, the country show signs of not meeting the expectation of retaining its long-term industrial competitiveness and economic growth, especially with a widening rich-poor gap and natural resource exhaustion. Realizing inclusive growth requires study of an inclusive innovation solution. In this paper, we analyze the feasibility and development path of China's inclusive innovation based on the framework of a National Innovation System, identify examples of inclusive innovation in China, and seek to provide policy suggestions for China's future sustainable development.

Determining Canopy Growth Conditions of Paddy Rice via Ground-based Remote Sensing

  • Jo, Seunghyun;Yeom, Jongmin;Ko, Jonghan
    • 대한원격탐사학회지
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    • 제31권1호
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    • pp.11-20
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    • 2015
  • This study aimed to investigate the canopy growth conditions and the accuracy of phenological stages of paddy rice using ground-based remote sensing data. Plant growth variables including Leaf Area Index (LAI) and canopy reflectance of paddy rice were measured at the experimental fields of Chonnam National University, Gwangju, Republic of Korea during the crop seasons of 2011, 2012, and 2013. LAI values were also determined based on correlations with Vegetation Indices (VIs) obtained from the canopy reflectance. Three phenological stages (tillering, booting, and grain filling) of paddy rice could be identified using VIs and a spatial index (NIR versus red). We found that exponential relationships could be applied between LAI and the VIs of interest. This information, as well as the relationships between LAI and VIs obtained in the present study, could be used to estimate and monitor the relative growth and development of rice canopies during the growing season.

볏짚에서 추출한 짚초액의 식물성장에 대한 영향과 항균 효과 (Effect on Plant Growth and Antibiosis of Rice Straw Liquor Extracted from Rice Straw)

  • 강화영;김세훈;김영주;박상숙
    • 한국환경보건학회지
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    • 제35권3호
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    • pp.178-186
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    • 2009
  • Rice straw liquid was prepared from rice straw using simple pyrolysis furnace, and its effects on plant growth and antibiosis were investigated. Effects of straw liquid on plant growth of Oryza sativa L., Glycine max Merr. and Lactuca sativa L. and antibiosis of bacteria and mold of rice straw liquid were studied. Th rice straw liquid showed good results on plant growth and multiplication. Rice straw liquid showed a little antibiosis on bacteria but non antibiosis on mold. Rice straw liquid had minimal inhibitory concentration of 2.5-5% for bacteria.

Introduction of a Bacterial Hemoglobin Gene for Improving Bacterial Growth under Hypoxic Condition

  • Chung, Chung-Nam;Yoon, Suk-Ran;Jun, Woo-Jin;Shim, Sang-In;Park, In-Ho;Chung, Jin-Woong
    • 농업생명과학연구
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    • 제43권6호
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    • pp.77-84
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    • 2009
  • Using recombinant DNA technology, the vector system containing minimal fragment of a bacterial hemoglobin gene (vgb) was constructed. When this vector was inserted into Escherichia coli, the growth of the host was significantly improved in both viable cell counts and absorbance measurement, compared to that of the wild type strain. In addition, by minimizing the size of bacterial hemoglobin in the vector, the ability of vgb in growth improvement was augmented, due to the reduction of metabolic burden from the maintenance and replication of the plasmid. By using this system, it is expected that the growth of microorganisms can be improved even in the hypoxic condition.

Effects of Arbuscular Mycorrhizal Fungal Inoculation on the Growth of Red Pepper and Soil Glomalin Content

  • Lee, Ji-Eun;Lee, Eun-Hwa;Eom, Ahn-Heum
    • 한국균학회지
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    • 제49권4호
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    • pp.517-524
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    • 2021
  • Red pepper seedlings were inoculated either alone or with a mixture of all five species of arbuscular mycorrhizal fungi (AMF). After 10 weeks of growth in the greenhouse, the seedlings were transplanted into fields and cultivated without chemical fertilizers and pesticides for 10 weeks. The results showed that plant growth was significantly increased under both greenhouse and field conditions, suggesting that AMF inoculation has a positive effect on the growth of Capsicum annuum and improves the physical properties of the soil by increasing the concentration of glomalin. The application of AMF can positively contribute to sustainable agriculture by reducing the use of chemical fertilizers while increasing crop growth.

이상저온 조건이 고추의 생육 및 수량에 미치는 영향 (The Influence of Abnormally Low Temperatures on Growth and Yield of Hot Pepper(Capsicum Annum L.))

  • 박은지;허유;손병구;최영환;이용재;박영훈;서정민;조재환;홍창오;이상규;강점순
    • 한국환경과학회지
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    • 제23권5호
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    • pp.781-786
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    • 2014
  • Growth and physiological disorders caused by abnormally low temperatures were evaluated in pepper, an important field crop in Korea. In addition, the effects of chemical treatment using glutamine was verified on minimizing the damages by low temperature. The growth of pepper plants in stem length and diameter was suppressed as the temperature decreased from $25^{\circ}C$, and the suppression level was the highest for plants grown for 90 days at $20^{\circ}C$. However, root growth was not affected by the different temperatures. The number of leaf and leaf area decreased at the temperatures below $25^{\circ}C$, an optimum temperature for growth. Fresh weight and dry weight decreased for plants grown at $20^{\circ}C$. Pepper fruit yield also decreased by 11% at $20^{\circ}C$ in comparison to $25^{\circ}C$. Falling blossom rate was different depending on the growth temperature, and the rate was 27.2% at $25^{\circ}C$, 35.2% at $22.5^{\circ}C$, and 41.0% at $20^{\circ}C$, indicating that falling blossom rate increased as temperature decreased. Different growth temperatures did not affected on the level of symptom of calcium deficiency and Phytopathora blight. Falling blossom was severe at abnormally low temperature of $20^{\circ}C$, but the treatment of glutamine reduced falling blossom rate and increased the yield by 7.0% as compared to control. The optimum concentration of glutamine treatment was 10 mg/L for yields.

만성질환아 어머니의 희망, 핵심신념, 사회적 지지가 외상 후 성장에 미치는 영향 (Influence of Hope, Core beliefs and Social support on Posttraumatic growth in Mothers of Chronically Ill Children)

  • 김미영;김금순
    • 기본간호학회지
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    • 제19권4호
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    • pp.493-502
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    • 2012
  • Purpose: The purpose of this study was to identify the influence of hope, core beliefs, and social support on the posttraumatic growth of mothers with chronically ill children. Methods: In this study, 94 mothers who gave written consent completed the questionnaires between July 21 and July 31, 2012 when they visited a university hospital in Seoul, Korea. Data were analyzed using t-test, ANOVA, Pearson correlation coefficient and stepwise multiple regression. Results: Hope, core belief and social support had positive correlations with posttraumatic growth. Models including these variables explained 64.8% (F=55.276, p<.001) of the variance for posttraumatic growth. Hope (${\beta}$=.441, p<.001) was the most influential factor. Conclusion: The findings demonstrate that it is essential for nurses to mediate and facilitate posttraumatic growth of mothers caring for chronically ill children. Furthermore, there is an need to develop and implement new strategies in clinical practice that will result in improvements in posttraumatic growth.

하악골 후방 견인력이 가토의 악골 성장에 미치는 영향에 관한 실험적 연구 (THE EFFECT OF RETRACTIVE FORCE ON JAW GROWTH IN GROWING RABBITS)

  • 김종철;양규호;이광섭
    • 대한치과교정학회지
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    • 제23권3호
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    • pp.295-309
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    • 1993
  • The purpose of this study was to investigate the effect of jaw growth in a growing rabbits, when they are subjected to refractive force and after removal of refractive force. The experimental animals were Oryctolagus couniculus, male rabbits of 4 weeks of age. The mandible is retracted with 200gm in force of each side to the posterior and superior direction for 14 hours a day. Then rabbits were used as control group. First experimental group received refractive force for 4 weeks. Second experimental group received for 8 weeks. Third experimental group received for 12 weeks. True lateral films and dorso-ventral films were taken before wearing appliances, 4 weeks, 8 weeks, 12 weeks and 16 weeks after wearing appliance. The changes of rabbits jaw growth were observed radiographically. The findings were as follows : 1. Mandibular refractive force decreased total mandibular length, mandibular condylar length and angular length. 2. Mandibular refractive force increased nasal height, condylar width and angular width. 3. Mandibular refractive force decreased mandibular lenght growth but increased mandibular width growth. 4. There is no phenomena of catch-up growth after refractive force removal.

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