• Title/Summary/Keyword: national production

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A Development of Hybrid Production System Modeling using Simulation (시뮬레이션을 활용한 Hybrid 생산 Model의 연구)

  • Noh, Gwon-Hak;Son, Seong-Gyu;Chang, Sung-Ho;Lee, Jong-Hwan;Jeong, Gwan-Young;Kim, Tae-Sung;Lee, Hee-Soo
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.34 no.2
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    • pp.76-84
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    • 2011
  • To meet the needs of customer, manufacturing companies are diversifying product making methods. In order to adapt to changes, companies are trying to find a new manufacturing system. In this research, MTS (Make to Stock) and MTO (Make to Order) production methods are simulated using ARENA and the results are compared and analyzed to find a better system. As a result, by combining the advantages of MTS and MTO system, a hybrid production system is developed. The hybrid model is analyzed to verify that it is better than the existing two models, which is MTS and MTO model. The statistic results of output analyzer show that a new system helped to increase production rate and decrease work in process inventory. The hybrid model proved that it contains the merits of MTO production method and MTS production method.

Hydrogen Production from Barley Straw and Miscanthus by the Hyperthermophilic Bacterium, Cadicellulosirupter bescii

  • Minseok Cha;Jun-Ha Kim;Hyo-Jin Choi;Soo Bin Nho;Soo-Yeon Kim;Young-Lok Cha;Hyoungwoon Song;Won-Heong Lee;Sun-Ki Kim;Soo-Jung Kim
    • Journal of Microbiology and Biotechnology
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    • v.33 no.10
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    • pp.1384-1389
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    • 2023
  • This work aimed to evaluate the feasibility of biohydrogen production from Barley Straw and Miscanthus. The primary obstacle in plant biomass decomposition is the recalcitrance of the biomass itself. Plant cell walls consist of cellulose, hemicellulose, and lignin, which make the plant robust to decomposition. However, the hyperthermophilic bacterium, Caldicellulosiruptor bescii, can efficiently utilize lignocellulosic feedstocks (Barley Straw and Miscanthus) for energy production, and C. bescii can now be metabolically engineered or isolated to produce more hydrogen and other biochemicals. In the present study, two strains, C. bescii JWCB001 (wild-type) and JWCB018 (ΔpyrFA Δldh ΔcbeI), were tested for their ability to increase hydrogen production from Barley Straw and Miscanthus. The JWCB018 resulted in a redirection of carbon and electron (carried by NADH) flow from lactate production to acetate and hydrogen production. JWCB018 produced ~54% and 63% more acetate and hydrogen from Barley Straw, respectively than its wild-type counterpart, JWCB001. Also, 25% more hydrogen from Miscanthus was obtained by the JWCB018 strain with 33% more acetate relative to JWCB001. It was supported that the engineered C. bescii, such as the JWCB018, can be a parental strain to get more hydrogen and other biochemicals from various biomass.

Trends in Hybrid Cultured Meat Manufacturing Technology to Improve Sensory Characteristics

  • AMM Nurul Alam;Chan-Jin Kim;So-Hee Kim;Swati Kumari;Seung-Yun Lee;Young-Hwa Hwang;Seon-Tea Joo
    • Food Science of Animal Resources
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    • v.44 no.1
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    • pp.39-50
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    • 2024
  • The projected growth of global meat production over the next decade is attributed to rising income levels and population expansion. One potentially more pragmatic approach to mitigating the adverse externalities associated with meat production involves implementing alterations to the production process, such as transitioning to cultured meat, hybrid cultured meat, and meat alternatives. Cultured meat (CM) is derived from animal stem cells and undergoes a growth and division process that closely resembles the natural in vivo cellular development. CM is emerging as a widely embraced substitute for traditional protein sources, with the potential to alleviate the future strain on animalderived meat production. To date, the primary emphasis of cultured meat research and production has predominantly been around the ecological advantages and ethical considerations pertaining to animal welfare. However, there exists substantial study potential in exploring consumer preferences with respect to the texture, color, cuts, and sustainable methodologies associated with cultured meat. The potential augmentation of cultured meat's acceptance could be facilitated through the advancement of a wider range of cuts to mimic real muscle fibers. This review examines the prospective commercial trends of hybrid cultured meat. Subsequently, the present state of research pertaining to the advancement of scaffolding, coloration, and muscle fiber development in hybrid cultured meat, encompassing plant-based alternatives designed to emulate authentic meat, has been deliberated. However, this discussion highlights the obstacles that have arisen in current procedures and proposes future research directions for the development of sustainable cultured meat and meat alternatives, such as plant-based meat production.

Detection of Soybean mosaic virus by Reverse Transcription Loop-mediated Isothermal Amplification (Reverse transcription Loop-mediated isothermal amplification을 이용한 Soybean mosaic virus의 진단)

  • Lee, Yeong-Hoon;Bae, Dae-Hyeon;Kim, Bong-Sub;Yoon, Young-Nam;Bae, Soon-Do;Kim, Hyun-Joo;Mainali, Bishwo P.;Park, In-Hee;Lee, Su-Heon;Kang, Hang-Won
    • Research in Plant Disease
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    • v.21 no.4
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    • pp.315-320
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    • 2015
  • Soybean mosaic virus (SMV) is a prevalent pathogen that causes significant yield reduction in soybean production worldwide. SMV belongs to potyvirus and causes typical symptoms such as mild mosaic, mosaic and necrosis. SMV is seed-borne and also transmitted by aphid. Eleven SMV strains, G1 to G7, G5H, G6H, G7H, and G7a were reported in soybean varieties in Korea. A reverse transcription loop-mediated isothermal amplification (RT-LAMP) method allowed one-step detection of gene amplification by simple procedure and needed only a simple incubator for isothermal template. This RT-LAMP method allowed direct detection of RNA from virus-infected plants without thermal cycling and gel electrophoresis. In this study, we designed RT-LAMP primers named SML-F3/B3/FIP/BIP from coat protein gene sequence of SMV. After the reaction of RT-LAMP, products were identified by electrophoresis and with the detective fluorescent dye, SYBR Green I under daylight and UV light. Optimal reaction condition was at $58^{\circ}C$ for 60 min and the primers of RT-LAMP showed the specificity for nine SMV strains tested in this study.

Long-term Monitoring Data for Growth and Yield of Local Rice Varieties in South Korea (국내 벼 지역별 주요 품종에 대한 장기 모니터링 자료의 구성형태)

  • Kim, Junhwan;Sang, Wangyu;Shin, Pyeong;Baek, Jaekyeong;Kwon, Dongwon;Lee, Yunho;Cho, Jung-Il;Seo, Myungchul
    • Korean Journal of Agricultural and Forest Meteorology
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    • v.22 no.3
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    • pp.176-182
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    • 2020
  • National Institute of crop Science of the Rural Development Administration (RDA) has conducted long-term monitoring studies to find out the relationship between crop yield and climatic factors for major food crops including rice. Rice growth and y ield have been monitored in 17 regions where the branches of the National Institute of Crop science and the Provincial Agricultural Research and Extension Service locate. The data obtained from monitoring studies for rice growth and yield include the observation of vegetative growth status and yield components, which include leaf number, biomass and the weight of 1000 grains. These data have been collected from rice fields where standard management procedures have been applied. The observation data for crop growth and yield monitoring studies from 1999 to 2019 are open to public through agricultural science library operated by RDA.

Luteinizing hormone beta gene polymorphism and its effect on semen quality traits and luteinizing hormone concentrations in Murrah buffalo bulls

  • Reen, Jagish Kour;Kerekoppa, Ramesha;Deginal, Revanasiddu;Ahirwar, Maneesh Kumar;Kannegundla, Uday;Chandra, Satish;Palat, Divya;Das, Dayal Nitai;Kataktalware, Mukund Amritrao;Jeyakumar, Sakthivel;Isloor, Shri krishna
    • Asian-Australasian Journal of Animal Sciences
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    • v.31 no.8
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    • pp.1119-1126
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    • 2018
  • Objective: Present investigation was aimed to study the Single Nucleotide Variants of the luteinizing hormone beta ($LH{\beta}$) gene and to analyze their association with the semen quality (fresh and post-thawed frozen semen) and luteinizing hormone (LH) concentrations in Murrah buffalo bulls. Methods: Polymerase chain reaction-single stranded conformational polymorphism (PCR-SSCP) and Sanger sequencing method is used to study genetic variability in $LH{\beta}$ gene. LH assay was carried out using enzyme-linked immunosorbent assay method. A fixed general linear model was used to analyze association of single nucleotide polymorphism (SNP) of $LH{\beta}$ gene with semen quality in 109 and LH concentrations in 80 Murrah bulls. Results: $LH{\beta}$ gene was found to be polymorphic. Total six SNPs were identified in $LH{\beta}$ gene g C356090A, g C356113T, g A356701G, g G355869A, g G356330C, and g G356606T. Single Stranded Conformational Polymorphism variants of pattern 2 of exon 1+pattern 2 of exon 2+pattern 1 of exon 3 had highly significant (p<0.01) effect on sperm concentration (million/mL), percent mass motility, acrosome integrity and membrane integrity in fresh and frozen semen whereas significant (p<0.05) effect was observed on percent live spermatozoa. SSCP variants of pattern 2 of exon 1+pattern 2 of exon 2+pattern 1 of exon 3 had highly significant (p<0.01) effect on luteinizing hormone concentrations too. Conclusion: The observed association between SSCP variants of $LH{\beta}$ gene with semen quality parameters and LH concentrations indicated the possibilities of using $LH{\beta}$ as a candidate gene for identification of markers for semen quality traits and LH concentrations in Murrah buffaloes.

The Moderate Effect of SPC on the Relations Between Practicing JIT and Production Performance

  • Park, Jeong-Soo
    • International Journal of Quality Innovation
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    • v.10 no.1
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    • pp.107-113
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    • 2009
  • Our goal of this study is to confirm whether manufacturing companies' practicing JIT production system have positive effect on production performances and to confirm that manufacturing companies' practicing SPC shows positive moderate effect on the relation between practicing JIT and their production performances. Based on empirical study to manufacturing companies nationwide, we can conclude that taking JIT practices of sample companies has positive effect on production performances and, moreover, practicing SPC has positive moderate effect on the relation between JIT practices and production performances. These conclusion represents managerial implication that concurrent practicing JIT and SPC could generate more improved production performances.

Development of Serum Free Medium and Optimization of Porcine Rotavirus Vaccine Production

  • Ko, Yun-Mi;Kim, Myoung-Hwa;Kim, Min-Young;Jeong, Yeon-Ho
    • 한국생물공학회:학술대회논문집
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    • 2005.04a
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    • pp.207-209
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    • 2005
  • Serum is a potential source of bacterial, mycoplasmal and viral contamination, and it has a possibility of the introduction of serum proteins, prion and pyrogens into the final vaccine product. For porcine Rotavirus vaccine production, it is necessary to develop serum free medium which do not cause those problems. A new serum free medium was developed for porcine Rotavirus vaccine based on DMEM, and the performance of developed serum free medium was evaluated in terms of Vero cell growth and Rotavirus vaccine production. The cell density, gown in serum free medium developed, was similar with that in serum supplemented medium. Also, it was higher than that in other commercially available serum free medium. The productivity of Rotavirus vaccine using serum free medium developed and optimum production strategies will be also discussed.

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Terpenoids from Citrus unshiu Peels and Their Effects on NO Production

  • Vu, Thi Oanh;Seo, Wonyoung;Lee, Jeong Hyung;Min, Byung Sun;Kim, Jeong Ah
    • Natural Product Sciences
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    • v.26 no.2
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    • pp.176-181
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    • 2020
  • Two new compounds, 3-methyl-but-2-en-1-yl-1-O-β-xylopyranosyl-(1"→2')-O-β-glucopyranoside (1) and 1-O-β-glucopyranosyl-6-hydroxy-2-methyl-hep-2-enoic acid (2), along with sixteen known terpenoids were isolated from the peels of Citrus unshiu Markov. Their structures were elucidated based on extensive NMR analyses (1H NMR, 13C NMR, DEPT, COSY, HMQC, and HMBC) and high-resolution mass spectrometry. In addition, all isolates (1 - 18) were tested their effects on nitric oxide (NO) production in RAW264.7 cells. Limonin (15) showed to inhibit LPS-induced NO production in a concentration-dependent manner without cytotoxicity.

Isolation and Characterization of a Chitinolytic Enzyme Producing Marine Bacterium, Aeromonas sp. J-5003

  • Choi Yong Un;Kang Ji Hee;Lee Myung Suk;Lee Won Jae
    • Fisheries and Aquatic Sciences
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    • v.6 no.1
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    • pp.1-6
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    • 2003
  • A chitinolytic enzyme-producing bacterium was isolated from sea water on the coast of Busan. The bacterium was identified as Aeromonas sp. based on its morphological, cultural and biochemical characteristics and designated Aeromonas sp. J-5003. The strain produced two chitinoloytic enzymes: chitinase and chitobiase. The optimum culture conditions of the strain for production of chitinoloytic enzymes were investigated. For the production of chitinase, the major components of medium were colloidal chitin $0.5\%$, glucose $0.2\%$, yeast extract $0.25\%$ and peptone $0.25\%$ while for the production of chitobiase, they were colloidal chitin $0.5\%$, galactose and tryptone $0.2\%$. The optimum cultural temperature and initial pH for the production of chitinase and chitobiase were $30^{\circ}C$ and pH 7.0, respectively.