• Journal of Mushroom
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• v.14 no.3
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• pp.81-89
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• 2016

White button mushroom (Agaricus bisporus) is the most widely consumed mushroom in the world, and domestic consumption is increasing owing to expansion of the westernized diet in recent years. Before 2000, most Korean mushroom farmers cultivated foreign varieties, but recently, Korean breeders are developing hybrid strains using molecular breeding tools. To produce a better mushroom cultivar, we evaluated some traits of button mushroom Agaricus bisporus strains. Mycelial growth rate at different culture temperatures was investigated by 25>20>15>30>$10^{\circ}C$. Recently developed domestic varieties had superior mycelial growth rate compared to the traditionally grown species. In particular, the ASI1338 strain showed excellent mycelial growth rate at different temperatures. Further, we confirmed that ASI1007, ASI1085, ASI1310, ASI1339 were strongly resistant to bacterial brown blotch, whereas ASI1053, ASI1103, ASI1140, ASI1146, ASI1177, ASI1183, ASI1195, ASI1321, ASI1331, ASI1336 were relatively weakly resistant. The average number of days for 16.5, and that for harvest was 5.7; the average yield was 142.7 g/2-kg bag. Mycelial growth rates at 10, 15, 20, $25^{\circ}C$ were similar, but that at $30^{\circ}C$ was lower. The mushroom yield was highly correlated with the number of days for pinheading and harvest.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.6
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• pp.166-172
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• 2016

This paper deals with the seismic qualification of the reflective metal insulation for thermal shielding that is installed on the outer surfaces of the main equipment of the primary coolant system of a nuclear power plant. A small-scale model of the reactor pressure vessel, which has equivalent dynamic characteristics, was designed to be tested in domestic seismic testing facilities in the future. In this study, seismic analysis of the small-scale model installed with metal insulation was performed using equivalent static analysis and response spectrum analysis. The required Response Spectrum for main equipment of the primary coolant system of APR-1400 plant were considered to establish the enveloping response spectrum, which was applied to the seismic analysis model. The results from two seismic analysis methods were compared to show the structural adequacy of the metal insulator design against a safe shutdown earthquake. This study will form the basis for the seismic testing to support the seismic qualification of the reflective metal insulator.

• Journal of the Korean Society of Food Science and Nutrition
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• v.39 no.9
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• pp.1399-1404
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• 2010

Physicochemical characteristics and antioxidant activities of twelve varieties of legumes and cereals in Korea were analyzed and compared. Crude protein content was higher in legumes (20.60~34.47%) than in cereals (8.96~15.45%). Crude fat contents of soybean (17.73%) and black soybean (18.79%) were higher than other legumes (0.68~1.38%) and cereals (1.01~5.39%). The major minerals were potassium, calcium and sodium, and especially calcium and potassium were high in legumes. Unsaturated fatty acids composition ranged from 66.79% in cowpea to 85.14% in soybean, and $\Omega$-3 fatty acids (linolenic acid) content was higher of 7.47~48.25% in legumes than 0.36~3.71% in cereals. Total polyphenol content was higher 1.32~4.15 mg/g in 80% EtOH extracts from legumes than 0.53~2.83 mg/g in cereals. DPPH and ABTS radical scavenging activities were high values of 62.60% and 264.20 mg AA eq/g, respectively, in EtOH extract from sorghum.

• Journal of the Korean Society of Food Science and Nutrition
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• v.43 no.4
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• pp.584-591
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• 2014

Salted semi-dried brown croaker, Miichthys miiuy, has been proposed as a palatable seafood in Korea due to its specific texture, taste, and nutritional content. This study was conducted to characterize the sanitary quality of commercial salted semi-dried brown croaker for the development of high quality salted semi-dried products. The chemical properties ranged from 64.2 to 77.1% (mean $74.7{\pm}3.5%$) for moisture content, from 2.1 to 9.5% for salinity, from 14.1 to 58.1 mg/100 g for volatile basic nitrogen, and from 19.1 to 107.2 meq/kg for peroxide values. The viable cell counts and Escherichia coli were 4.2~8.3 log(CFU/g) [mean: 6.2 log(CFU/g)] and 18>~4.6 log(MPN/100 g), respectively. The chemical and microbial results of commercial salted semi-dried brown croaker suggest that provisions should be established for development of high quality salted semi-dried products.

• Korean Journal of Food Science and Technology
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• v.6 no.2
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• pp.65-69
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• 1974

Noodles were made from composite flours based on barley or sweet potato/wheat flour and their quality was assessed to obtain the following results. 1) In noodle sheet and dried noodle formation, barley flour could substitute 100% and sweet potato flour, 70% of wheat flour and their textural characteristics were improved by addition of glyceryl monostearate and sodium polycrylate. 2) Textural parameters such as hardness, cohesiveness and gumminess of noodle sheet and dried noodle were decreased by admixture of barley of sweet potato flour whereas they were increased by use of the additives. Noodle sheet required hardness over 6.2 and gumminess over 430 while dried noodle needed hardness over 6.8. 3) In cooked noodle, replacement of wheat flour and use of additives tended to lower the textural parameters. With respect to the cooking quality, barley flour could substitute 60% and sweet potato flour, 40% of wheat flour. 4) In organoleptic evaluation of cooked noodle with respect to its color, taste and texture, 20% replaced composite flour was not different significantly at 5% level from wheat flour and the quality defect was mainly due to discoloration of the product.

• Cartoon and Animation Studies
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• s.13
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• pp.45-65
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• 2008

The animation industries of Korea and China shares the effort for transition from work-for-hire Industry Into creative industry. In spite of similar industry background and characteristics, and the aggressive government policy to support this industry transition at the same point of time, the current status of animation industries in Korea and China are showing very different statistics as of the end of 2007. The production amount of Chinese original animation has grown rapidly since 2004, which has made China the top class country in the world in original animation production amount, and more than 600 million audience of Chinese TV animation has firmly established the Chinese domestic animation market basis. On the other hand, despite the Korean government support, original animation production of Korea has been showing a slow and sluggish growth, and Korean animations are losing the domestic market basis with only 1% TV ratings due to unfavourable Korean TV stations' programming practices against Korean animations. This different status of animation Industries of two countries are the result of different government policies and the fallacy of Korean government. While the Chinese government has focused its industry policy on the facilitating the domestic market by establishing the stable broadcasting TV distribution and encouraging the animation production through organic cooperation between related government agencies, Korean government spent lots of effort into facilitating the development of original animation projects, without cooperative structure In the government, and without sincere consideration on the importance of establishment of domestic market consumer basis.

• Korean Journal of Animal Reproduction
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• v.23 no.3
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• pp.257-262
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• 1999

This study was carried out to evaluate the effect of pH and storage temperature on the viability of boar sperm diluted with extender KpA for swine artificial insemination. The results obtained in this experiment were summarized as follows : 1. The viability of boar sperm diluted with KpA was higher than that with BTS during storage and especially more than 60% of sperm viability in KpA was maintained through 6 days. The pH values of all extenders were kept during storage of semens following dilution. 2. The sperm diluted with acidic (pH 6.3~6.8) or alkalic (pH 7.8~8.0) KpA and stored at 4$^{\circ}C$ or 37$^{\circ}C$ were more sensitive in viability than that with neutral pH (6.8~7.3) and at 17$^{\circ}C$ storage. But pH values of all conditions were not increased rapidly. Especially acidic and alkalic diluents were more stable in pH after dilution. Conclusively, extender pH and storage temperature was the important factors for sperm viability. The KpA setting up around neutral pH was the optimal boar semen extender for maintaining liquid semen at 17$^{\circ}C$.

• The Journal of the Korea Contents Association
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• v.10 no.8
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• pp.274-282
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• 2010

The purpose of this study was to examine the types of implant, the type of bone graft, periodontal status and the distribution of implant among patients in a region. The subjects in this study were 299 patients who received implant treatment Busan area. The number of their implants was 871 in total. The findings of the study were as follows: As for the type of implant, home-made implants accounted for 83.6 percent, and imported ones represented 16.4 percent. Regarding bone graft, The presence or absence of disease made a significant difference to that($x^2$=14.66, p<.01). As to periodontal status by gender, age and disease, the periodontal state was better among those who were female(y=-2.73, p<.01), who were younger(F=14.20, p<.001) and who had no disease(t=-4.67, p<.001). The intergroup gaps were statistically significant. Concerning the distribution of implant, The distribution of implant was statistically significantly different($x^2$=33.14, p<.01). Age made a statistically significant difference to that($x^2$=74.09, p<.001). As to links between periodontal status and the number of implant, The intergroup gaps were statistically significant($x^2$=38.28, p<.01).

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.12
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• pp.6427-6433
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• 2013

For trains to run safely and quickly, the train should always follow the preceding train at a proper spacing. For this purpose, a certain distance between the stations is set for each block section. For the safe operation of trains in one block section, only one train service for an automatic block system is needed. The existing block system is composed an ABS, which is a linked track circuit and line sideway system through the interlocking system. The interlocking system is being replaced with a domestic electronic interlocking system. On the other hand, the block system still uses the relay format of an analog system, and is independently installed of the line sideway systems. Therefore, the existing block system has many problems in terms of construction and maintenance. In addition, the existing domestic line is used for ABS and LEU , which is installed separately, despite the train being controlled by the information of the same signal at the same location. This is not efficient in terms of each product price and the maintenance costs. This paper introduces an integrated electronic block system and the field test results. The field test was carried out through a periodic inspection performed eight times from January to late August.

• Microbiology and Biotechnology Letters
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• v.39 no.2
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• pp.126-132
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• 2011

The goal of this study was to develop a high value Korean red wine possessing antihypertension activity. The effects of some medicinal plants and grapes on the alcohol fermentation process and the angiotensin I-converting enzyme (ACE) inhibitory activity of Vitis hybrid red wine were investigated. Various Vitis hybrid red wines were vinified by the fermentation of a mixture of Vitis hybrid must and some medicinal plants and grapes at $25^{\circ}C$ for 10 days. Of these red wines, the Vitis hybrid-Vitis coignetiae red wine exhibited a high ethanol content of 12.0% and had a good level of acceptability. It also showed a high antihypertensive ACE inhibitory activity of 68.5%. After post-fermentation of 60 days, the ACE inhibitory activities of the Vitis hybrid-Vitis coignetiae red wine exhibited the highest ACE inhibitory activity of 80.7% ($IC_{50}$: 28 mg/mL) and also had the best acceptability. The $C_{18}$ solid phase extracts of the Vitis hybrid-Vitis coignetiae red wine, after 60 days post-fermentation, showed clear antihypertensive effects on spontaneously hypertensive rats. Our results reveal that the Vitis hybrid-Vitis coignetiae red wine has the potential to become a new functional red wine due to its good acceptability and high antihypertensive activity.