• Title/Summary/Keyword: $R_f$

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Effects of hydration pretreatment on small molecule amphiphiles(SMA) at two levels in reduced-calorie cake systems (수화 전처리에 따른 양쪽성 저분자 유화제(Small Molecule Amphiphile)의 첨가 수준이 저 열량 케익 체계에 미치는 영향)

  • 김혜영;셋서케롤
    • Korean journal of food and cookery science
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    • v.10 no.1
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    • pp.8-12
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    • 1994
  • The effects of small molecule amphiphiles(SMA) at 1.5 and 15% levels were compared with or without heating to 65$^{\circ}C$ and cooling pretreatment in modified reduced-calorie cake systems. The SMA used were monoglycerides(MG), sorbitan monosterate(SMS), VanallR polysorbate 60(PS60), surose ester(SE) F10, F70, and F160, Low batter specific gravities with high cake voumes were noted with the high levels of treated SMS, MG, and SE F10 and F70 or cakes with treated low levels of SEF160, F70 and PS 60. Cake volumes with the treated low levels of SEF160, F70, and PS 60 were comparable to cake volumes when using an untreated high level of Vanall$\^$R/.

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One-step Multiplex RT-PCR Method for Simultaneous Detection of Seed Transmissible Bacteria and Viruses in Pepper and Tomato Seeds (고추와 토마토 종자에서 종자전염 세균 및 바이러스의 동시 검출을 위한 One-step Multiplex RT-PCR 방법)

  • Jeong, Kyu-Sik;Soh, Eun-Hee
    • Research in Plant Disease
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    • v.17 no.1
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    • pp.44-51
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    • 2011
  • The aim of this study was to develop specific and sensitive PCR-based procedures for simultaneous detection of economically important plant seed infection pathogenic bacteria and virus, Xanthomonns campestris pv. vesicatoria (Xcv), Clavibacter michiganensis subsp. michiganensis (Cmm), Erwinia carotovora subsp. carotovora (Ecc), Pepper mild mottle virus (PMMoV) and Tobacco mild green mosaic virus (TMGMV) in pepper and tomato seeds. Most of pepper and tomato bacterial and virus diseases are responsible for germination and growth obstruction. PCR with arbitral primers: selection of specific primers, performance of PCR with specific primers and determination of the threshold level for pathogens detection. To detect simultaneously the Xcv, Cmm, Ecc, PMMoV and TMGMV in pepper and tomato seeds, five pairs (Cmm-F/R, Ecc-F/R, Xcv-F/R, PMMoV-F/R, TMGMV-F/R) of specific primer were synthesized by primer-blast program. The multiplex PCR for the five pathogens in pepper and tomato seeds could detect specially without interference among primers and/or cDNA of plant seeds and other plant pathogens. The PCR result for pathogen detection using 20 commercial pepper and 10 tomato seed samples, Ecc was detected from 4 pepper and 2 tomato seed samples, PMMoV was detected from 1 pepper seed sample, and PMMoV and TMGMV were simultaneously detected from 1 pepper seed sample.

Cloning and Characterization of the Putative Transferrin Receptor cDNA from the Olive Flounder (Paralichthys olivaceus)

  • Won Kyoung-Mi;Park Soo-Il
    • Fisheries and Aquatic Sciences
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    • v.6 no.2
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    • pp.101-104
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    • 2003
  • A cDNA clone for the olive flounder (Paralichthys olivaceus) transferrin receptor (fTfR) was isolated from a leukocytes cDNA library. The fTfR gene consisted of 2,319 bp encoding 773 amino acid residues. The amino acid sequence alignment of the fTfR showed that their size and hydrophobic profile are similar. In addition, the Tyr-Thr-Arg-Phe (YTRF) motif that is the recognition signal for high-efficiency endocytosis, is conserved very well. This motif is important for functional properties of TfR. The deduced amino acid sequence had $42.4-42.9\%$ identities with the previously reported TfRs of vertebrates. The fTfR was expressed in the blood, kidney, spleen, and liver of healthy olive flounder by the Northern blot hybridization.

THE GROUP OF GRAPH AUTOMORPHISMS OVER A MATRIX RING

  • Park, Sang-Won;Han, Jun-Cheol
    • Journal of the Korean Mathematical Society
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    • v.48 no.2
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    • pp.301-309
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    • 2011
  • Let R = $Mat_2(F)$ be the ring of all 2 by 2 matrices over a finite field F, X the set of all nonzero, nonunits of R and G the group of all units of R. After investigating some properties of orbits under the left (and right) regular action on X by G, we show that the graph automorphisms group of $\Gamma(R)$ (the zero-divisor graph of R) is isomorphic to the symmetric group $S_{|F|+1}$ of degree |F|+1.

A Study on Determinants of Life Satisfaction of the Urban Elderly People (도시지역 노인의 생활만족 결정요인에 관한 연구)

  • Jung Young Ju
    • Journal of Korean Public Health Nursing
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    • v.13 no.2
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    • pp.143-160
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    • 1999
  • The purpose of this descriptive survey study was to examine the following items. 1) Score distribution of life satisfaction. powerlessness. perceived health status and self-esteem 2) Demographic characteristics and the affection of socioeconomic characterictics to life satisfaction. powerlessness. perceived health status and self-esteem 3) Correlationship between life satisfaction. powerlessness. perceived health status and self-esteem 4) Determining the factors affecting life satisfaction The subjects were 167 urban elderly people. Data were collected from May to July in 1998 using the questionaires. The data were analyzed by mean. ANOVA. Pearson correlation coefficient and stepwise multiple regression with SPSS win 7.5 program. The results were as follows : 1) The degree of life satisfaction and powerlessness were relatively low with the mean score of 42.4 and 39.79 respectively. and perceived health status and self-esteem were relatively high with the mean score of 3.15 out of 5 and 27.3 respectively. 2) There were no significant differences between demographic characteristics and life satisfaction. Education(F=2.91. p=0.02), previous employment(F=2.23. p=0.03) and marital status(F=3.85. p=0.04) showed significant differences in the relationship between demographic characteristics and powerlessness. Sex(F=6.40. p=0.0l). education(F=3.30. p=0.0l). marital status(F=7.13. p=0.008) and kinds of living togather(F=3.69. p=0.003) showed significant differences in the relationship between demographic characteristics and perceived health status. There were no significant differences between demographic characeristics and self-esteem. 3) Monthly allowance(F=3.68. p=0.007). participation in social activity(F=5.90. p=0.000) and number of social activities(F=5.27. p=0.000) showed significant differences in the relationship between socioeconomic characteristics and life satisfaction. Monthly allowance(F=3.13. p=0.01) and number of social activities(F=2.7. p=0.02) showed significant differences in the relationship between socioeconomic characteristics and powerlessness. There were no significant differences between socioeconomic characteristics and perceived health status. Montly allowance(F=4.82. p=0.001). particpation in social activity(F=2.90. p=0.02) and number of social activities(F=3.79. p=0.003) showed significant differences m the relationship between socioeconomic characteristics and self-esteem. 4) Powerlessness showed negative correltionship with perceived health staus(r=-0.295. p<0.001). self-esteem(r=-0.463. p<0.001) and life satisfaction(r=-0.514. p<0.001). Perceived health status showed positive correltionship with self-esteem(r=0.312. p<0.001) and life satisfaction (r=0.377. p<0.001). Self-esteem showed positive correlationship with life satisfaction(r=0.652. p(<0.001). 5) The predicting variances for life satisfaction m elderly people were self-esteem. powerlessness. participation in social activity and perceived health status. The most influencing factor among the variances was the self-esteem$(42.5\%)$ and powerlessness was the second. Both of self-esteem and powerlessness accounted for $48.2\%$ in life satisfaction. The addition of participation of social activity and perceived health status accounted for $52.9\%$ in life satisfaction.

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Genetic Diversify and Population Structure of Two Korean Pond Frog Species, Rana nigromaculata and R. plancyi (Anura, Ranidae), with a Survey of Temporal Genetic Variation in R. nigromaculata

  • Suh-Yung Yang;Jong-Bum Kim;Mi-Sook Min;Jae-Hwa Suh
    • Animal cells and systems
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    • v.3 no.3
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    • pp.275-283
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    • 1999
  • Korean R. plancyi occupies a restricted area in western South Korea and shows a relatively low level of genic variability (%P=15.2, Ho=0.052, He=0.048). In contrast, R. nigromaculata is broadly distributed in South Korea. The observed low level of variability of R. nigromaculata (%P=14.3, Ho=0.042, He=0.043) is probably due to its recent colonization. Populations of R. nigromaculata exhibited considerable genetic differentiation (F$_{sT}$=0.149) and low level of gene flow (Nm=1.427) among populations, compared to those of R. Plancyi (F$_{sTF$_{sT}$}$=0.096, Nm=2.354), which occupies a restricted area. The observed levels of gene flow among populations of R. nigromaculata (Nm=1.427) over a broad geographic range is relatively higher than other amphibian species. The high level of gene flow is probably the result of the high dispersal abilities of R. nigromaculata. A survey of temporal genic variation of R. nigromaculata showed that there was no significant change on the overall average genetic diversity from 1978 (average He=0.044) to 1997 (average He=0.040). Wright's F-statistics also indicated no significant genetic differentiation from 1978 (F$_{sT}$=0.118) to 1997 (F$_{sT}$=0.108). This suggests that the environmental change appears to have had little influence on the genetic composition of R. nigromaculata in the study areas during the past 20 years. The low level of temporal variation might be due to the result of high dispersal abilities and wide migration range of this species.

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Core Technology for Prominent COT (Color Filter On TFT Array) Structure

  • Kim, D.G.;Park, S.R.;Kim, S.J.;Park, J.J.;Seo, C.R.;Chung, I.J.
    • 한국정보디스플레이학회:학술대회논문집
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    • 2004.08a
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    • pp.393-394
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    • 2004
  • To get rid of cell assembly margin and have more process room of upper substrate, we developed truly COT (Color Filter On TFF Array) LCDs in that B/M (Black Matrix) as well as C/F (Color Filter) layer is located on TFT substrate. Novel B/M material is also developed for this COT structure. Difficulty in making contact hole through C/F layer was solved by making each C/F pattern isolated from others. We think this configuration will be core technology for prominent COT LCDs.

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