• Title/Summary/Keyword: Interaction Area

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Genotype-by-Environment Interaction in Yield of Sesame

  • Shim, Kang-Bo;Kang, Churl-Whan;Kim, Dong-Hee;Park, Jang-Whan
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.48 no.2
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    • pp.65-67
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    • 2003
  • This study was conducted to analyze the effects of genotypes, environments and interaction of G$\times$E on yields of sesame grown in seven different environments by AMMI analysis. Environments accounted for the largest (91 %) proportion of the sums of squares, followed by G$\times$E (8%) and genotypes (1%) Therefore, G$\times$E effects are theoretically eight times as important as G effects. G2 (Yanghukkae) has the largest IPCAI scores indicating higher G$\times$E interaction. G3 (Suwon 171) was near zero score of IPCAI suggesting higher stability than others in yield component. Most of environments except for Iksan area shows different G$\times$E effects by years, which means Iksan is optimal area for multi-environmental adaptation evaluation in sesame breeding programs. According to this experiment, it is concluded that maximization of grain yield through environments can be achieved by specific genotypes in specific environments.

Drug Interaction of Probenecid and Lithium Carbonate (프로베네시드와 탄산리튬의 약물상호작용)

  • Lee, Jin-Hwan;Lee, Chong-Ki
    • Journal of Pharmaceutical Investigation
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    • v.17 no.2
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    • pp.95-98
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    • 1987
  • The drug interaction between probenecid and lithium carbonate was studied pharmacokinetically in rabbits. The blood level and the area under the concentration curve (AUC) of lithium carbonate administered orally were elevated by coadministration of probenecid. Probenecid inhibited the urinary excretion of lithium carbonate in rabbits. Biological half-life and $t_{max}$ of lithium carbonate were prolonged by coadministration of probenecid. From these results, dosage regimen of lithium carbonate is considered to be adjusted for effective and safe therapy in the coadministration of probenecid.

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Drug Interaction of Nalidixic Acid and Probenecid in Rabbits (Nalidixic Acid와 Probenecid의 약물 상호 작용)

  • 최준식
    • YAKHAK HOEJI
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    • v.27 no.2
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    • pp.133-138
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    • 1983
  • The interaction between nalidixic acid and probenecid was studied pharmacokinetically in rabbits. The blood level and the area under the concentration curve(AUC) of nalidixic acid administered orally in dose of 100mg/kg was elevated by the coadministration of probenecid. Probenecid inhibited both the urinary excretion and the biliary excretion of nalidixic acid. Therefore, biological half-life of nalidixic acid was prolonged by the coadministrarion of probenecid. It was considered that the coadmini-stration of probenecid is more desirable than the single administration of nalidixic acid for the therapeutic effect.

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A Study on Prediction of Rolling Noise for Railway -Noise Contribution of Wheels and Rail- (철도차량의 전동음 예측에 관한 연구 -차륜과 레일의 소음 기여도 분석-)

  • 김재철;구동회
    • Journal of KSNVE
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    • v.10 no.3
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    • pp.486-492
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    • 2000
  • The major source of railway noises is rolling noise caused by the interaction of the wheels and rails. This rolling noise is generated by the roughness of the wheel /rail surface on tangent track in the absence of discontinuities such as wheel flats or rail joints. These roughness cause relative vibrations of the wheel and rail at their contact area. The vibrations generated at the contact area are treansmitted through the wheel and rail structures exciting resonances of the wheel and travelling waves in the rail. Then these vibrations radiate noise to the wayside. In this paper we predict the rollingnoise radiated from radial/axial motion of the wheel and vertical/lateral motion of the rail using Remington's analytical model and then compare of the predicted sound pressure and measured one. Although there are some inaccuracy in our prediction. these results show in good agreement between 500 Hz and 3150 Hz.

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The Interaction of Vortex and Premixed Flame with Consideration of Volume Expansion Effect (체적팽창효과를 고려한 예혼합화염과 와동의 상호작용에 관한 연구)

  • Jeong Ui-Heon;Gwon Se-Jin
    • 한국전산유체공학회:학술대회논문집
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    • 1998.11a
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    • pp.204-210
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    • 1998
  • A method is developed to include the effect of volume expansion in the description of the flame dynamics using G-equation. Line volume-source is used to represent the effect of the exothermic process of combustion with source strength determined by the density difference between the burned and the unburned region. Volume expansion adjusts the flow field to accommodate the increased volume flow rate crossing the flame front. Test result predicted the measured velocity field qualitatively. The method was applied to study the interaction of vortex and premixed flame. Increased volume expansion did not change the initial growth rate of flame area. However, the residence time and flame surface area increased with higher expansion ratios.

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The Interaction of Vortex and Premixed Flame with Consideration of Volume Expansion Effect (체적팽창효과를 고려한 예혼합화염과 와동의 상호작용에 관한 연구)

  • Chung, Eui-Heon;Kwon, Se-jin
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.22 no.12
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    • pp.1669-1680
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    • 1998
  • A method is developed to include the effect of volume expansion in the description of the flame dynamics using G-equation. Line volume-source is used to represent the effect of the exothermic process of combustion with source strength assigned by the density difference between the burned and the unburned region. The present model provides good agreement with the experimental results. Including volume expansion, the flow field is adjusted to accommodate the increased volume flow rate which crossing the flame front and the result predicts the same behavior of measured velocity field qualitatively. The effect of increasing volume expansion does not change the initial growth rate of flame area but increase the residence time. Consequently this effect increases the maximum area of flame front. The flame propagation in varying flow field due to volume expansion provides a promising way to represent the wrinkled turbulent premixed flames in a numerically efficient manner.

Interaction and Transient Analysis to FACTS Devices in Seoul Area (수도권 FACTS 상호영향 및 과도특성 분석)

  • Yoon, Jong-Su;Kim, Jae-Han;Lee, Seong-Doo;Choi, Jang-Hum;Seo, Bo-Hyeok
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.59 no.11
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    • pp.1929-1935
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    • 2010
  • This paper describes the operation effect of FACTS devices in the Korean power system. At the year of 2010, three FACTS devices is under commercial operation in the Seoul area. Among them, 345kV ${\pm}100MVA$ STATCOM at Mi-Geum substation and 345kV ${\pm}200MVA$ SVC at Dong-Seoul substation are very close at their electrical and geographical distance. Therefore, the additional analysis including interaction and mutual transient is necessary. Therefore, a detailed EMTDC/PSCAD simulation model was developed and steady-state/transient analysis was implemented.

All-optical Polarization Phase Modulation in Coupled Quantum Dots

  • Je, Ku Chul;Kyhm, Kwangseuk
    • Current Optics and Photonics
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    • v.1 no.1
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    • pp.60-64
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    • 2017
  • We have considered optical nonlinearities of coupled quantum dots theoretically, where an exciton dipole-dipole interaction is mediated between the adjacent large and small quantum dots. For increasing a pump pulse area in resonance with the large quantum dot exciton the induced nonlinear refractive index of the small quantum dot exciton has been obtained. As the exciton dipole-dipole interaction depends on the relative orientation of two exciton dipoles, the optical nonlinearities for the directions parallel and perpendicular to the coupling axis of the two quantum dots are compared. The directional imbalance of optical nonlinearities in coupled quantum dots can be utilized for a polarization phase modulator by controlling a pump pulse area and propagation length.

An Analysis of Nursing Research related to the Mother-Child Interaction in Korea (모아상호작용 관련 간호연구 분석)

  • Oh Jina;Lee Ja-Hyung
    • Child Health Nursing Research
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    • v.9 no.2
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    • pp.149-161
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    • 2003
  • Purpose: The purpose of this study is to identified patterns and trend of studies and to analyzed the nursing research related to the mother-child interaction in Korea and to improve direction of nursing research in mother-child interaction in Korea. Method: The research studies related to the mother-child interaction were selected from the Korean Nurses Academic Society Journal, and from dissertation, which were conducted between 1961 and 2002 with the consideration of the condition and the cultural specialty of Korea. The total numbers of the studies were 34. These studies were classified according to 1)time of publication or presentation, 2)research design, 3)type of interaction objects, 4)measurement tool, and 5)chief content of studies. Ressult: 1) Until 1984, there was no research studies related to mother-child interaction. The number of studies on the mother-child interaction on the mother-child interaction has been increased rapidly after 1985. The mother-child interaction studies were 13(38.2%) from the doctoral dissertation, 4(11.8%) from the Master's theses and 17(50%) other papers were published in academic journals. 2) Experimental studies of research design was used in these research studies was 13(38.2%). Descriptive studies was 8(23.6%), correlational studies was 4(11.8%) and comparative studies was 4(11.8%). Qualitative study was just one(2.9%) and literature review was 4(11.8%). Especially experimental studies has been increased. 3) Participants of these studies were mother and infant 29(85.5%), father and infant 2(5.9%), mother and fetus 2(5.9%) and nurse and infant 1(2.9%) 4) Utilization of instruments as follows: 13 studies used Walker et al(1986)'s MIPIS (Mother-Infant Play Interaction Scale), 6 studies used Barnard(1978)'s NCAFS (Nursing Child Assessment Feeding Scale), 4 studies used NCATS(Nursing child Assessment Teaching Scale) for assessing mother-infant interaction. 3 studies used Stainton(1981)'s Parent-Infant Interaction Scale. Choi(1987), Kim(1999) and Kim and Son(1997) used measurement tool researcher made which was modified from NCATS (Nursing child Assessment Teaching Scale) and AMIS(Assessment of Mother-Infant Sensitivity Scale). Other tools used to survey influencing factors of interaction. 5) Content of the research studies were classified 3 different types, such as ① studies about the mother-child interactions' pattern, ② studies about influencing factors of the mother-child interaction, ③ studies about effect of nursing intervention program to improve the mother-child interaction. Conclusion: Therefore we make following suggestions which are made based on the above research analysis : 1) In the future research studies need to compare with other area of discipline in mother-child interaction. 2) More attention and in depth research is needed to validate in terms of research design and statistical data analysis. 3) It is important to develop the instruments which is culturally acceptable in Korea society. 4) The results of correlational studies and experimental studies needs to the integrated by meta analysis.

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