• Title/Summary/Keyword: Agricultural R and D

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Investigation of post-translational modification of the secreted protein expressed in insect cell lines using baculovirus expression vector system(BEVS)

  • Yun, Eun-Young;Goo, Tae-Won;Kim, Sung-Wan;Park, Kwang-Ho;Hwang, Jae-Sam;Kang, Seok-Woo;Kwon, O-Yu
    • Proceedings of the Korean Society of Sericultural Science Conference
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    • 2003.04a
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    • pp.82-83
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    • 2003

  • In previous experiment, we reported when the heterologous protein is expressed by using baculovirus expression vector system (BEVS), although the amount of intracellular protein is abundant, the amount of extracellular Protein is poor. As the link in the chain of the research, we investigated the secretory pathway, important in case of the secretory protein, of the protein expressed in insect cells using BEVS. (omitted)

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A Study on Survey for Technology Forecasting using Delphi in Biosystems Engineering (농업기계화분야의 델파이 기술예측조사에 관한 연구)

  • 이종인;조근태;장동일;이규천;조영우
    • Journal of Biosystems Engineering
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    • v.29 no.2
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    • pp.175-186
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    • 2004

  • The study was designed to forecast and derive future core technologies using Delphi method in Korea agriculture. The technologies will make agriculture for core and strategic industry that has high value-added in 21 century. Questions were given to specialists by each technology in order to survey importance, realization time, level of R＆D in Korea and foremost country, leading group of R＆D, effective policy, etc. for each technology. The target of the survey for Delphi is confined specialists in the area of Bioystems Engineering. 55 core technologies were derived and 31 specialists answered the survey.

  • https://doi.org/10.5307/JBE.2004.29.2.175 인용 PDF KSCI

Effect of Maternal Under-nutrition during Late Pregnancy on Lamb Birth Weight

  • Gao, F.;Hou, X.Z.;Liu, Y.C.;Wu, S.Q.;Ao, C.J.
    • Asian-Australasian Journal of Animal Sciences
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    • v.21 no.3
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    • pp.371-375
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    • 2008

  • This study investigated the effects of maternal undernutrition during late pregnancy on lamb birth weight. 45 Mongolian ewes, synchronized for oestrus and then mated, were divided into four groups and offered 0.86 MJME/kgw-0.75d-1 (control group; CG : ad libitum access to feed), $0.44MJME/kgw^{-0.75}d^{-1}$ (Restricted Group 3; R3), $0.33MJME/kgw^{-0.75}d^{-1}$ (Restricted Group 2; R2) and $0.20MJME/kgw^{-0.75}d^{-1}$ (Restricted Group 1; R1) respectively during late pregnancy (90-150 days). During restriction, maternal net body weight loss, insulin and NEFA concentrations and lamb birth weight were measured. The results indicated that loss of maternal body weight in R3, R2 and R1 was 4.42, 7.23, 11.13 kg respectively, which was significantly (p<0.01) higher than that in CG (0.93 kg). Insulin concentrations of the ewes in R1, R2 and R3 were lower and were significantly different (p<0.05) between restricted groups and CG at 124 d of pregnancy. NEFA concentrations in all groups tended to decrease from 90d of gestation to parturition and in R1 were significantly (p<0.05) lower than in CG at 124 d of gestation. Lamb birth weight in R1 was significantly lower than in R2, R3 and CG (p<0.05). In conclusion, with decreasing supply of maternal nutrition, the retardation of fetal growth became worse. When the plane of nutrition was below $0.33MJME/kgw^{-0.75}d^{-1}$, significant effects of maternal undernutrition on lamb birth weight were observed.

  • https://doi.org/10.5713/ajas.2008.70187 인용 PDF KSCI

The Heterogeneous Impacts of Agricultural R&D on Farm Efficiencies by Farm Income levels (농업 R&D투자의 형평성 분석: 농가단위 효율성에 미치는 영향의 소득계층별 차이를 중심으로)

  • Kim, Jae-Kyung
    • Journal of Technology Innovation
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    • v.21 no.1
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    • pp.27-57
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    • 2013

  • The projects of agricultural R&D investments have been evaluated largely on the basis of efficiency better than equity although both criteria are equally critical in that major fund source of agricultural R&D investments is public budget. In this study, I focus on equity aspects by identifying the heterogeneous impacts of public knowledge created by R&D on farm efficiencies by farm income levels using bias-corrected DEA and quantile regression with panel data. The findings indicate that entire farms haven't been likely to be benefited evenly from public knowledge stock created by agricultural R&D, in particular high income farms can have enjoyed relatively more benefits of its in terms of efficiency gain. Those can imply agricultural R&D have functioned in the way analogue to digressive subsidies. In addition, the heterogeneous technological needs different among income level farms turns out to be main underlying factors affecting such the skewed benefit distribution of agricultural R&D over different income level farms.

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