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A Conceptual Study for Creating "A Good Quality Startup" by Algorithm-Based Entrepreneurship Education ('질 좋은' 창업의 개념정립과 창업교육 중심의 '질 좋은' 창업육성시스템 구축방안 연구)

  • Yang, Young-Seok;Choi, Jong-In;HwangBo, Yun
    • Asia-Pacific Journal of Business Venturing and Entrepreneurship
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    • v.7 no.2
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    • pp.141-150
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    • 2012
  • This paper aims at proposing the establishment of concept for qualified startup business and the model of smart incubating business system for qualified startup business creation, which is being government's recent policy paradigm. The result of this paper shows the theoretical setting for the concept of qualified startup business through researching papers precedent and analyzing the startup business education affairs of American universities and proposing the model of requisition for qualified startup business. The core model of requisition for qualified startup business is to secure the essential factors for qualified startup business and the preparation process through compounding the requisites, the execution ecosystem for leading the mixing requisites and supporting. This model has been practiced enormously at business creation education field in American universities. This paper especially propose TEC program of NC State University in U.S.A. by case study.

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Optimal medium and cultural conditions for synnemata formation of Paecilomyces tenuipes (눈꽃동충하초(Paecilomyces tenuipes)의 분생자경속 형성)

  • Park, Gi-Beom;Park, Gi-Byung;Shrestha, Bhushan;Sung, Jae-Mo
    • Journal of Mushroom
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    • v.2 no.2
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    • pp.60-68
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    • 2004
  • Potato dextrose broth was the best inoculation medium to produce in vitro synnemata of Paecilomyces tenuipes. The optimum temperature for synnemata formation of P. tenuipes was $20^{\circ}C$ under 500 lx of light intensity. Highest synnemata production was observed at 18 hr of light period per day. The medium containing 50 g of each silkworm pupae and brown rice produced highest number of synnemata. The optimum ratio of brown rice to distilled water was found as 1:1. Mycelial growth and synnemata production of P. tenuipes was faster and higher in medium containing grinded pupae as compared to whole pupae. The optimum inoculum amount per bottle of medium was 15ml. The highest synnemata production of P. tenuipes was obtained by incubating rice pupae medium at $24^{\circ}C$ until mycelium grows sufficiently after inoculation and then transferring it to $20^{\circ}C$ chamber till harvest.

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A Study on the Formation of Trans Fatty Acids with Heating and Storage of Fats and Oils (I) - The Change of Physicochemical Characteristics and Total Trans Fatty Acids Content - (유지의 가열 및 저장에 따른 Trans 지방산 생성에 관한 연구(I) -일부 이화학적 특성 및 Trans 지방산 함량변화를 중심으로-)

  • Kim, Duck-Sook;Koo, Bon-Soon;Ahn, Myung-Soo
    • Korean journal of food and cookery science
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    • v.6 no.2
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    • pp.37-50
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    • 1990
  • The cause and the degree of the cis to trans isomerization were investigated about soybean oil (SBO), corngerm oil (CGO), cottonseed oil (CSO), margarine (MG) and shortening (ST). All samples treated with various conditions were analyzed to determine physicochemical characteristics (AV, POV, IV, RI), fatty acid composition, total trans fatty acid content and change of trans fatty acid composition by GLC, IR and HPLC. The results were obtained as follows; 1. Physicochemical constants were changed with a gentle slope according to incubating period at 40${\pm}$2$^{\circ}C$ and physicochemical constants of margarine and shortening were changed, significiantly. 2. The saturation degree in the unsaturated fatty acid composition determined by GLC gradually were increased during incubation and heating periodically. For palmitic-and stearic acid content at the samples stored in the incubator, the saturation degrees were gradually increased. But for the case of heat treatment, they were increased more rapidly than other fatty acids. 3. Total trans fatty acid contents in each samples were determined by GLC, IR and HPLC, the amount of trans fatty acids were measured with discrepancy. It was caused by deviation of analytical instruments, methods and the kinds of samples. Trans fatty acids were measured more definitly in IR more than GLC and HPLC. On the other hand, total trans fatty acid contents in average levels for SBO, CGO, CSO, MG and ST stored for 35 days and heated for 24 hours were 1.3%, 1.1%, 0.9%, 22.6% and 13.8%, and 3.6%, 3.0%, 2.8%, 41.2% and 20.8%, respectively.

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Effect of Dietary Structural to Nonstructural Carbohydrate Ratio on Rumen Degradability and Digestibility of Fiber Fractions of Wheat Straw in Sheep

  • Tan, Z.-L.;Lu, D.-X.;Hu, M.;Niu, W.-Y.;Han, C.-Y.;Ren, X.-P.;Na, R.;Lin, S.-L.
    • Asian-Australasian Journal of Animal Sciences
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    • v.15 no.11
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    • pp.1591-1598
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    • 2002
  • The effect of different dietary structural carbohydrate (SC) to nonstructural carbohydrate (NSC) ratios on fiber degradation, digestion, flow, apparent digestibility and rumen fluid characteristics was studied with a design using 18 wethers fitted with permanent rumen and duodenum cannulae. All sheep were divided into six groups randomly, receiving six diets with varying SC to NSC ratios. All diets contained the same proportion of wheat straw and concentrate. The dietary SC to NSC ratios were adjusted by adding cornstarch to the concentrate supplements. The duodenal and fecal flows of dry matter (DM), neutral detergent fiber (NDF), acid detergent fiber (ADF), hemicellulose (HC) and cellulose (CEL) were estimated using chromium-mordanted wheat straw as a flow marker. The degradation parameters of wheat straw DM, NDF, ADF, HC and CEL were determined by incubating the ground wheat straw in nylon bags in the rumen for different periods of time. There was no effect (p>0.05) of the different dietary SC to NSC ratios on rumen pH or $NH_3$-N, but acetate, propionate and butyrate concentrations were significantly affected (p<0.05 or p<0.01) by dietary SC to NSC ratios in the rumen fluid. When the dietary SC to NSC ratio was 2.86, the highest rumen degradability of wheat straw DM, NDF, ADF and CEL was found, but the highest apparent rumen digestibilities of DM, NDF, ADF, HC and CEL occurred at a 2.64 SC to NSC ratio. However, because of compensatory digestion in the hindgut, the apparent digestibilities of DM, NDF, ADF, HC and CEL were highest when the dietary SC to NSC ratio was 2.40. In conclusion, there is a optimal range of dietary SC to NSC ratios (between 2.86 and 2.40) that is beneficial to maximize wheat straw fiber degradation and apparent digestibility.

Optimal Culture Conditions for the Shoot Growth of Freesia 'Shiny Gold' during Bioreactor Culture

  • Kang, Ji Su;Jeong, Kyeong Jin;Choi, Youn Jung;Yun, Jae Gill
    • Korean Journal of Plant Resources
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    • v.30 no.6
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    • pp.699-706
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    • 2017
  • For rapid production of freesia 'Shiny Gold' shoots by using a bioreactor, several culture conditions were investigated. Young shoots (< 1 cm) obtained from freesia corm section in vitro were used as plant materials for this experiment. As a basic experimental environment, 20 young shoots were inoculated into a 5 L balloon type bubble reactor which contained 1 L 1/2 strength MS medium supplemented with 30 g sucrose (3%), and the aeration was 0.1 vvm (vessel volumes per minute). The bioreactors were placed in a growth room with $23^{\circ}C$ temperature, 60% relative humidity and $60{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ light condition (16 h/8 h, day/night). The concentrations of MS media were set with 1/4, 1/2, 1 strength, medium volume 10, 20, 40%, sucrose concentration 3, 6, 9%, and aeration 0.1, 0.2, 0.4 vvm. After 4 weeks of cultivation, the growth indexes including the fresh and dry weight, and plant height were evaluated. At the same time, the consumption, pH, and EC of medium were estimated 4 weeks after incubating. The best results were achieved when 40 young shoots were incubated in a bioreactor in which 1 L of 1/2 strength MS medium supplemented with 6% sucrose was used for the rapid production of freesia shoots. The shoots were 17 cm in plant height and 1.0 g in fresh weight only 4 weeks after incubation which could be a good plant material suitable for corm enlargement in vitro. No correlation was observed between the growth of freesia shoots and the consumption, pH or EC of medium.

Signal Transduction of the Protective Effect of Insulin Like Growth Factor-1 on Adriamycin-Induced Apoptosis in Cardiac Muscle Cells

  • Chae, Han-Jung;Kim, Hyung-Ryong;Bae, Jee-hyeon;Chae, Soo-Uk;Ha, Ki-Chan;Chae, Soo-Wan
    • Archives of Pharmacal Research
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    • v.27 no.3
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    • pp.324-333
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    • 2004
  • To determine whether Insulin-like growth factor (IGF-I) treatment represents a potential means of enhancing the survival of cardiac muscle cells from adriamycin (ADR)-induced cell death, the present study examined the ability of IGF-I to prevent cell death. The study was performed utilising the embryonic, rat, cardiac muscle cell line, H9C2. Incubating cardiac muscle cells in the presence of adriamycin increased cell death, as determined by MTT assay and annexin V-positive cell number. The addition of 100 ng/mL IGF-I, in the presence of adriamycin, decreased apoptosis. The effect of IGF-I on phosphorylation of PI, a substrate of phosphatidylinositol 3-kinase (PI 3-kinase) or protein kinase B (AKT), was also examined in H9C2 cardiac muscle cells. IGF-I increased the phosphorylation of ERK 1 and 2 and $PKC{\;}{\zeta}{\;}kinase$. The use of inhibitors of PI 3-kinase (LY 294002), in the cell death assay, demonstrated partial abrogation of the protective effect of IGF-I. The MEK1 inhibitor-PD098059 and the PKC inhibitor-chelerythrine exhibited no effect on IGF-1-induced cell protection. In the regulatory subunit of PI3K-p85- dominant, negative plasmid-transfected cells, the IGF-1-induced protective effect was reversed. This data demonstrates that IGF-I protects cardiac muscle cells from ADR-induced cell death. Although IGF-I activates several signaling pathways that contribute to its protective effect in other cell types, only activation of PI 3-kinase contributes to this effect in H9C2 cardiac muscle cells.

Effect of NaCl on Biofilm Formation of the Isolate from Staphylococcus aureus Outbreak Linked to Ham

  • Lee, Soomin;Choi, Kyoung-Hee;Yoon, Yohan
    • Food Science of Animal Resources
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    • v.34 no.2
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    • pp.257-261
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    • 2014
  • The objective of this study was to evaluate the effects of NaCl on the biofilm formations of the isolate from Staphylococcus aureus outbreaks linked to ham. The S. aureus ATCC13565 isolated from ham was exposed to NaCl concentrations of 0%, 2%, 4%, and 6% supplemented in tryptic soy broth (TSB) for 24 h at $35^{\circ}C$, followed by plating 0.1 mL of the culture on tryptic soy agar containing 0%, 2%, 4%, and 6% NaCl, respectively. After incubating at $35^{\circ}C$ for 24 h, the colonies on the plates were collected and diluted to $OD_{600}$ = 0.1. The diluents of S. aureus were incubated on a 96-well flat bottom plate containing TSB plus the appropriate NaCl concentrations, and the biofilm formation was quantified by crystal violet staining after being incubated at $35^{\circ}C$ for 9 h. Confocal laser scanning microscope (CLSM) was also used for visualizing the biofilm formation of S. aureus at NaCl concentrations of 0%, 2%, 4%, and 6%. The transcriptional analysis of biofilm-related genes, such as icaA, atl, clfA, fnbA, sarA, and rbf, was conducted by quantitative real-time PCR. Crystal violet staining and CLSM showed that the biofilm formations of S. aureus increased (p<0.05) along with the NaCl concentrations. Moreover, the expression of the icaA genes was higher at the NaCl concentrations of 4% and 6% as compared with 0% of NaCl by approximately 9-folds and 20-folds, respectively. These results indicated that the NaCl formulated in processed food may increase the biofilm formations of S. aureus by increasing the icaA gene expressions.

The Effects of Salt Stress on Photosynthetic Electron Transport and Thylakoid Membrane Proteins in the Cyanobacterium Spirulina platensis

  • Sudhir, Putty-Reddy;Pogoryelov, Denys;Kovacs, Laszlo;Garab, Gyozo;Murthy, Sistla D.S.
    • BMB Reports
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    • v.38 no.4
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    • pp.481-485
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    • 2005
  • The response of Spirulina (Arthrospira) platensis to high salt stress was investigated by incubating the cells in light of moderate intensity in the presence of 0.8 M NaCl. NaCl caused a decrease in photosystem II (PSII) mediated oxygen evolution activity and increase in photosystem I (PSI) activity and the amount of P700. Similarly maximal efficiency of PSII (Fv/Fm) and variable fluorescence (Fv/Fo) were also declined in salt-stressed cells. Western blot analysis reveal that the inhibition in PSII activity is due to a 40% loss of a thylakoid membrane protein, known as D1, which is located in PSII reaction center. NaCl treatment of cells also resulted in the alterations of other thylakoid membrane proteins: most prominently, a dramatic diminishment of the 47-kDa chlorophyll protein (CP) and 94-kDa protein, and accumulation of a 17-kDa protein band were observed in SDS-PAGE. The changes in 47-kDa and 94-kDa proteins lead to the decreased energy transfer from light harvesting antenna to PSII, which was accompanied by alterations in the chlorophyll fluorescence emission spectra of whole cells and isolated thylakoids. Therefore we conclude that salt stress has various effects on photosynthetic electron transport activities due to the marked alterations in the composition of thylakoid membrane proteins.

Multiple Ovulations and In vitro Fertilization in the Domestic Fowl (Gallus domesticus)

  • Han, Haitang;Zhao, Chen;Li, Zandong
    • Asian-Australasian Journal of Animal Sciences
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    • v.17 no.12
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    • pp.1652-1656
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    • 2004
  • The aim of this study was to obtain mature ova or embryos at a single cell stage, which can be used in avian transgenesis and nuclear transfer through multiple ovulations, in vitro fertilization and culture. Chicken anterior pituitary extract (CAPE) or acetone-dried chicken anterior pituitary extract (ACAPE) was used to induce multiple ovulations in hens pretreated with pregnant mare' serum gonadotrophin (PMSG). In vitro fertilization of the multiple ovulated ova was performed by inseminating sperm onto the germinal disks in m-Ringer' solution and incubating the ova at 41$^{\circ}C$, 5% $CO_2$ for 10 h in DME-F12 medium containing 20% liquid albumen. The in vitro fertilization process was observed using an environmental scanning electron microscope. When normal laying hens (white Leghorn) were administered daily with PMSG (100 IU), egg laying ceased in most hens within 3 to 8 days. Ovulation began to occur about 7.5 h after injection of CAPE and ACAPE. The number of ovulated ova was 1.00${\pm}$0.00, 2.33${\pm}$0.52 and 2.20${\pm}$0.45, respectively, after receiving 100, 200 and 300 mg CAPE. The number of ovulated ova was 2.00${\pm}$0.00, 2.86${\pm}$0.69 and 3.00${\pm}$1.22, respectively, after receiving 10, 15 and 20 mg ACAPE. The fertilized and cultured ova were able to develop into embryos up to the 32 cell stage. The present experiments demonstrated that multiple ovulations can be induced by CAPE and ACAPE successfully, and the ova resulted from the treatment retained the capability for further fertilization and embryonic development. These data provide new information to support the establishment of an in vitro culture system for future avian transgenesis studies.

Nutritional Characteristics of Forage Grown in South of Benin

  • Musco, Nadia;Koura, Ivan B.;Tudisco, Raffaella;Awadjihe, Ghislain;Adjolohoun, Sebastien;Cutrignelli, Monica I.;Mollica, Maria Pina;Houinato, Marcel;Infascelli, Federico;Calabro, Serena
    • Asian-Australasian Journal of Animal Sciences
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    • v.29 no.1
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    • pp.51-61
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    • 2016
  • In order to provide recommendations on the most useful forage species to smallholder farmers, eleven grass and eleven legume forages grown in Abomey-Calavi in Republic of Benin were investigated for nutritive value (i.e. chemical composition and energy content) and fermentation characteristics (i.e. gas and volatile fatty acid production, organic matter degradability). The in vitro gas production technique was used, incubating the forages for 120 h under anaerobic condition with buffalo rumen fluid. Compared to legume, tropical grass forages showed lower energy (8.07 vs 10.57 MJ/kg dry matter [DM]) and crude protein level (16.10% vs 19.91% DM) and higher cell wall content (neutral detergent fiber: 63.8% vs 40.45% DM), respectively. In grass forages, the chemical composition showed a quite high crude protein content; the in vitro degradability was slightly lower than the range of tropical pasture. The woody legumes were richer in protein and energy and lower in structural carbohydrates than herbaceous plants, however, their in vitro results are influenced by the presence of complex compounds (i.e. tannins). Significant correlations were found between chemical composition and in vitro fermentation characteristics. The in vitro gas production method appears to be a suitable technique for the evaluation of the nutritive value of forages in developing countries.