• Title/Summary/Keyword: pen

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Seasonal Variation in Fatty Acid Composition in Female Pen Shell (Atrina Pectinata)

  • Baik Sung-Hyun;Kim Kang-Jeon;Choo Jong-Jae;Choe Sun-Nam;Chung Ee-Yung;Park Kwan Ha
    • Fisheries and Aquatic Sciences
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    • v.4 no.4
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    • pp.261-264
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    • 2001
  • Seasonal variation in fatty acid profiles was examined in the visceral mass and the posterior adductor muscle of the female pen shell, Atrina pectinata. Total percentages of saturated fatty acids were similar between the two organs, and there was not a prominent seasonal change in both tissues. While the percentages of highly unsaturated fatty acids (HUFAs) in the visceral mass were higher than those in the posterior adductor muscle, monounsaturated fatty acids (MUFAs) were high in the posterior adductor muscle. HUFA contents, especially in $20: 5\omega3$, $22: 5\omega3$ and $22: 6\omega3$, markedly decreased in September in the visceral mass, and this decrease was associated with a corresponding total MUFAs in the same organ. A similar pattern of change in September was noted in the posterior adductor muscle MUFAs and HUFAs. These results indicate that $20:\omega3$ and $22:\omega3$ HUFA changes in the visceral mass and posterior adductor muscle reflect the reproductive stages in pen shell.

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Factors Affecting the Incidence of Angel Wing in White Roman Geese: Stocking Density and Genetic Selection

  • Lin, M.J.;Chang, S.C.;Lin, T.Y.;Cheng, Y.S.;Lee, Y.P.;Fan, Y.K.
    • Asian-Australasian Journal of Animal Sciences
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    • v.29 no.6
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    • pp.901-907
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    • 2016
  • The present study investigated stocking density and genetic lines, factors that may alter the severity and incidence of angel wing (AW), in White Roman geese. Geese (n = 384) from two genetically selected lines (normal- winged line, NL, and angel-winged line, AL, respectively) and one commercial line (CL) were raised in four pens. Following common commercial practice, low-stocking-density (LD), medium-stocking-density, and high-stocking-density treatments were respectively administered to 24, 32, and 40 geese per pen at 0 to 3 weeks ($1.92m^2/pen$) and 4 to 6 weeks ($13.2m^2/pen$) of age and to 24, 30, and 36 geese at 7 to 14 weeks ($20.0m^2/pen$) of age. The results revealed that stocking density mainly affected body weight gain in geese younger than 4 weeks, and that geese subjected to LD had a high body weight at 2 weeks of age. However, the effect of stocking density on the severity score of AW (SSAW) and incidence of AW (IAW) did not differ significantly among the treatments. Differences were observed among the genetic stocks; that is, SSAW and IAW were significantly higher in AL than in NL and CL. Genetic selection generally aggravates AW, complicating its elimination. To effectively reduce IAW, stocking density, a suspected causal factor, should be lower than that presently applied commercially.

(Context-based Annotation for Pen Input Device Environment) (펜 입력 장치 환경을 고려한 컨텍스트 기반 Annotation)

  • 김재경;손원성;임순범;최윤철
    • Journal of KIISE:Software and Applications
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    • v.30 no.5_6
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    • pp.559-569
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    • 2003
  • Annotation is used for inscribing personal opinion, explanation, and summary. Various methods for processing annotation efficiently in digital document environments are being studied. However, previous studies placed much emphasis on function of annotation, so either they did not support Intuitive paper-based input interface or the systems that support it still have low reusability problems, because relation between annotation and original document are not explicit. Thus, in our study, we define context-based annotation modeling for digital document environments, and suggest annotation interface based on the modeling. To design annotation model, we define annotation types, context information of document, and relationship between annotation and original document. Also, a system based on the modeling is implemented to support pen-based annotation and annotation DTD. As a result, unlike previous studies, it is possible to explicitly define context-based annotation in pen-based input environments. We present various functions using the modeling and various possibilities of application.

Removal of Dyes by the Biosorption Using Biomass of Penicillium janthinellum (Penicillium janthinellum 균체를 이용한 생물흡착에 의한 염료의 제거)

  • 이제혁;전억한
    • KSBB Journal
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    • v.14 no.1
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    • pp.31-35
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    • 1999
  • A biosorption of azo and reactive dyes into the intact and modified biomass of Penicillium janthinellum were investigated. Initial pH of medium affected the initial adsorption rate and decolorization. The initial optimum pH was found to be 2.0, and the maximum adsorption rates of dyes were $40^{\circ}C$. The reactive dyes called Apollocion Red 7EB, Apollofix Red SF-3B and Apollocion Red H-E3B showed the high initial adsorption rates as 0.06, 0.086 and 0.079 mg/g.min, respectively. A mixture of dyes containing azo and reactive dyes was adsorbed to the biomass of Pen. janthinellum and revealed that the initial adsorption rate was 0.084 mg/g.min. Both percent decolorization and the influence on the dye adsorption rate. Modified biomass of Pen. janthinellum was also investigated for the dye adsorption and the superior dye loading performance was observed compared with the ion-exchange/chelating resins used for removal of Apollocion Red 7EB.

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