• Title/Summary/Keyword: GGE

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Vibration of sumberged functionally graded cylindrical shell based on first order shear deformation theory using wave propagation method

  • Farahani, Hossein;Barati, Farzan
    • Structural Engineering and Mechanics
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    • v.53 no.3
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    • pp.575-587
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    • 2015

  • This paper focuses on vibration analysis of functionally graded cylindrical shell submerged in an incompressible fluid. The equation is established considering axial and lateral hydrostatic pressure based on first order shear deformation theory of shell motion using the wave propagation approach and classic Fl$\ddot{u}$gge shell equations. To study accuracy of the present analysis, a comparison carried out with a known data and the finite element package ABAQUS. With this method the effects of shell parameters, m, n, h/R, L/R, different boundary conditions and different power-law exponent of material of functionally graded cylindrical shells, on the frequencies are investigated. The results obtained from the present approach show good agreement with published results.

  • https://doi.org/10.12989/sem.2015.53.3.575 인용 KSCI

Source and Sink Relationship in Diallell Grafting among Sweet potato Cultivars (고구마 품종 간 이면접목에 의한 생산능력과 저장능력)

  • 남상영;정승근;김인재;김민자;이철희;김태수
    • Korean Journal of Plant Resources
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    • v.14 no.2
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    • pp.89-93
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    • 2001

  • To obtain the basic information for varietal improvement and cultural practice, source and sink relationship in the diallel grafting was analyzed among five sweet potato cultivars, Yulmi, Shinyulmi, Gunmi, Hongmi and Seonmi, whose source and sink capacities are different one another. General grafting effect(GGE), specific grafting effect(SGE) and reciprocal grafting effect(RGE) of top weight, tuberous root weight and total weight showed considerable differences. Grafting decreased total dry weight but its effect was different among grafting combinations. Growth and dry matter production of top were affected more by scion, while those of underground were influenced more by stock. Shinyulmi which has great potential source and sink capacities resulted the highest total dry weight, while Hongmi and Yulmi which have low potential source capacity resulted the lowest total dry weight.

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Protective Effect of Garlic (Allium sativum L.) Extracts Prepared by Different Processing Methods on DNA Damage in Human Leukocytes (마늘의 조리방법에 따른 DNA 손상 보호 효과의 비교)

  • Kim, Jung-Mi;Jeon, Gyeong-Im;Park, Eun-Ju
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.39 no.6
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    • pp.805-812
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    • 2010

  • DNA damage including base modifications, loss of base and breaks in DNA strands can occur by exposure to irradiation, smoking and several components of food. Unrepaired DNA damage is known to lead to cellular dysfunction, cell death, cancer, and other diseases such as arteriosclerosis and diabetes. The protective effect of garlic on oxidative stress induced DNA damage has been reported recently. In this study, we investigated the protective effect of garlic extracts prepared by different processing methods (raw garlic extracts, RGE; grilled garlic extracts, GGE; pickled garlic extracts, PGE) on leukocytic DNA damage using comet assay. Human leukocytes were incubated with ethanol and methanol extract of garlic at various concentrations (1, 5, 10, 50 ${\mu}g$/mL), followed by oxidative stimuli (200 ${\mu}M$ $H_2O_2$ or 200 ${\mu}M$ 4-hydroxynonenal (HNE)). The methanol and ethanol extracts of RGE, GGE, and PGE showed inhibitory activities of DNA damage induced by $H_2O_2$ or HNE. Especially methanol extract of RGE ($ED_{50}$; 13.3 ${\mu}g$/mL) had a higher antigenotoxic effect on $H_2O_2$ induced DNA damage than those of GGE (23.5 ${\mu}g$/mL) or PGE (24.5 ${\mu}g$/mL). HNE induced DNA damage tended to be effectively inhibited by the lower concentration of all garlic extracts. Therefore, garlic might have protective effects against oxidative DNA damage regardless of processing methods (raw, grilled, pickled) which are the general consumed forms of garlic in Korea.

  • https://doi.org/10.3746/jkfn.2010.39.6.805 인용 PDF KSCI