• Korean Journal of Microbiology
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• v.49 no.3
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• pp.253-261
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• 2013

The purpose of this study was to investigate the aflatoxin $B_1$ binding of lactic acid bacteria (LAB) isolated from Korean traditional soybean paste and to evaluate the effect of incubation conditions and physico-chemical factors on the binding ability of LAB to this mutagen. The amount of aflatoxin $B_1$ bound by Enterococcus faecium DJ22, Lactobacillus fermentum DJ35, Lactobacillus rhamnosus DJ42, and Lactobacillus pentosus DJ47 was strain specific with the percent bound ranging from 19.3% to 52.1%. However, Enterococcus faecalis DJ14, Lactobacillus panis DJ29, and Pediococcus halophilus DJ50 strains did not exhibit any of the binding ability to aflatoxin $B_1$. For most strains, the binding ability was significantly affected by the environmental conditions such as the aflatoxin $B_1$ level, incubation time and temperature, and the initial cell count of LAB. The stability of the aflatoxin $B_1$-bacteria complexes was significantly more unstable after washing. In addition, the binding stability between viable and nonviable cells was not statistically significant. Treatment with heating, acidic pH, ${\alpha}$-amylase, protease, lysozyme, or sodium metaperiodate caused a significant (P<0.05) decrease in aflatoxin $B_1$ binding for the tested strains, suggesting that carbohydrates or proteins in the cell walls may be involved in aflatoxin $B_1$ binding ability. Since the aflatoxin $B_1$ binding of LAB was significantly reduced (P<0.05) by the pretreatment of the urea, the binding force observed in this study may have resulted from hydrophobic interaction.

• Journal of Chest Surgery
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• v.35 no.10
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• pp.730-735
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• 2002

Diaphragm is innervated by phrenic nerve and lower intercostal nerves. For patients with avulsion injury of brachial plexus, an in situ graft of phrenic nerve is frequently used to neurotize a branch of the brachial plexus. We studied short-term and mid-term changes of diaphragmatic level and movement in patients with dissection of phrenic nerve for neurotization. Material and Method : Thirteen patients with division of either-side phrenic nerve for neurotization of musculocutaneous nerve were included in this study. With endoscopic surgical procedure, the intrathoracic phrenic nerve was entirely dissected and divided just above the diaphragm. The dissected phrenic nerve was taken out through thoracic inlet and neck wound and then anastomosed to the musculocutaneous nerve through a subcutaneous tunnel. With chest films and fluoroscopy, levels and movements of diaphragm were measured before and after operation. Result : There was no specific technical difficulty or even minor postoperative complications following endoscopic division of phrenic nerve. After division of phrenic nerve, diaphragm was soon elevated about 1.7 intercostal spaces compared with the preoperative level, but it did not show paradoxical motion in fluoroscopy. More than 1.5 months later, diaphragm returned downward close to the preoperative level (average level difference was 0.9 intercostal spaces; p＝NS). Movement of diaphragm was not significantly decreased compared with the preoperative one. Conclusion : After division of phrenic nerve, the affected diaphragm did not show a significant decrease in movement, and the elevated diaphragm returned downward with time. However, the decreased lung volumes in the last spirometry suggest the decreased inspiratory force following partial paralysis of diaphragm.

• Journal of Environmental Impact Assessment
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• v.16 no.4
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• pp.301-310
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• 2007

For the improvement of air quality in the metropolitan area, Korea has enforced the air pollutant emission cap regulation from the 1st of July, 2007, and the companies that intend to install a new or an enlarged facility in the metropolitan area will be restricted. However, the current regulation on permission does not describe a standard of judgement distinctly. In this study, therefore, a method of permission on the installation of a new or an enlarged facility was developed by supplementing the law in force based on the foreign cases. To develop a specific permit regulation and procedure, the developed nations' cases such as US, Canada, EU were reviewed thoroughly. Also, an appropriate method was suggested to apply domestically for a new or an enlarged facility permit within the regulations of the metropolitan special law. The method consists of first, calculating the possible permit quantity from the difference between an estimated annual emission cap and the annual emission provided by the implementation plan in each region. Second, permitting a new or an enlarged facility construction within the difference of the emission between the regional emission cap and the implementation plan in 2014. Third, distributing emissions allowable to each performance year based on the regional emission cap and the implementation plan in 2014. Fourth, making use of the emission difference between the implementation plan and the performance result in each year. Considering the general domestic conditions, the convenience of the permit authority and permitted companies, the most reasonable method was to use the fourth. To enforce the suggested permit method in a more flexible way, parts of the related regulations need to be revised and continuous research and analysis on the results from the implemented system and on foreign cases is necessary to develop this method a suitable system for domestic conditions and to settle the air pollutant emission cap system.

• Korean Journal of Food Science and Technology
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• v.43 no.5
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• pp.583-587
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• 2011

This study evaluated the quality characteristics of yukwa pellets and yukwa bases on the ratio of soju addition (0, 25, 50, 75, and 100% v/v). Yukwa base with 50% ratio of soju addition displayed the highest diameter, volume and specific volume. The yukwa base with 75% ratio of soju addition displayed the longest in length. The weight of yukwa base increased as the ratio of soju increased. Lightness increased in yukwa pellet and yukwa base as the ratio of soju increased. Lightness of yukwa base was higher than yukwa pellet, but yellowness and redness of yukwa base were lower than yukwa pellet. Air cell size of yukwa base decreased as the ratio of soju increased. The compression and cutting force of yukwa base with 50% ratio of soju addition were lowest, while yukwa base with 0% soju was highest. In the sensory evaluation, preference of color increased as the ratio of soju addition increased. Yukwa base with 50% ratio of soju addition was the highest in internal compactness, mouth-feel, and overall preference. The results show that a soju ratio of 50-75% addition for total liquid is useful in the production of high quality yukwa base.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.69
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• pp.589-616
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• 2016

The reviewing of an analysis of the Korea-China FTA due to guidance introduced for the new regulations or exceptional regulations compared to the KORUS, Korea-EU, Korea-ASEAN FTA. Commodity sectors in the Korea-China FTA and the KORUS, Korea-EU, Korea-ASEAN FTA(the majority in the country and trade criteria analysis result) compared and analyzed the results, rules of origin and the customs clearance procedures of origin, preferential tariff rate of origin and the origin preferential specific rules are somewhat difference, but customs and trade facilitation regulations are already quite consistent with the Korea customs system. Relatively important research results were as follows. First, the calculation of the regional value content in KORCHINA FTA is that I'm to use the deduction method can comprehensively reflect a regional value ratio, with respect to the materials acquired originating status as the FTA in the US and EU use the product non it's not to consider the value of the originating materials originating materials can be utilized for intermediate goods. Second, even if a non-treaty country in the middle with the exception of direct transport rules, and acknowledge the country of origin are under customs control, there are provisions for the period are temporarily stored in a non-treaty countries separately, that period goods imported into the non-treaty countries and up to three months from the day. If the situation of the occurrence of force majeure be greater than three months, but has so exceed six months. Third, the materials acquired originating status in the Korea-China FTA not to consider the value of non-originating materials used in its products as the KORUS FTA and Korea-EU FTA, that can be utilized originating materials for intermediate goods. It is expected that higher utilization of rules of origin. Meanwhile, Korea-China FTA has provisions to allow requests for preferential tariff applied on imports Customs declaration of intention to apply pre-condition for a preferential tariff applied to the importer. In other words, if the import customs tariff preference when applying post-intention not to advance is to be noted that any preferential treatment to prevent the later application.

• Asian-Australasian Journal of Animal Sciences
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• v.33 no.7
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• pp.1202-1208
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• 2020

Objective: The aim of this study was to identify a distribution pattern of meat quality grade (MQG) as a function of carcass yield index (CYI) and the gender of Hanwoo (bull, cow, and steer) to determine the optimum point between both yield and quality. We also attempted to identify how pre- and post-deboning variables affect the gender-specific beef quality of Hanwoo. Methods: A total of 31 deboning variables, consisting of 7 pre-deboning and 24 post-deboning variables from bulls (n = 139), cows (n = 69), and steers (n = 153), were obtained from the National Institute of Animal Science (NIAS) in South Korea. The database was reconstructed to be suitable for a statistical significance test between the CYI and the MQG as well as classification of meat quality. Discriminant function analysis was used for classifying MQG using the deboning parameters of Hanwoo by gender. Results: The means of CYI according to 1+, 1, 2, and 3 of MQG were 68.64±2.02, 68.85±1.94, 68.62±5.88, and 70.99±3.32, respectively. High carcass yield correlated with low-quality grade, while high-quality meat most frequently was obtained from steers. The classification ability of pre-deboning parameters was higher than that of post-deboning parameters. Moisture and the shear force were the common significant parameters in all discriminant functions having a classification accuracy of 80.6%, 71%, and 56.9% for the bull, cow, and steer, respectively. Conclusion: This study provides basic information for predicting the meat quality by gender using pre-deboning variables consistent with the actual grading index.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.7
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• pp.63-72
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• 2017

This paper proposes a procedure to improve the operational efficiency of the automotive parts manufacturing process by applying classical IE techniques composed of process analysis, work method analysis, and motion analysis, and a specific application case is outlined. The proposed procedure was developed originally by the Task Force organized in L company's automotive parts manufacturing business unit. The balance efficiency and production capacity were used as measures of operational efficiency. The developed procedure follows the general procedure of analyzing the phenomenon at the manufacturing shop, deriving an improvement solution to solve the problem, evaluating each derived alternative, and implementing it to the field to achieve productivity improvement. Among the methods used in each phase of the procedure, function analysis used in the waste discovery phase and R&R evaluation method used in the alternative assessment phase are unique techniques developed by L company's TF. The R&R Evaluation method techniques are described in detail because this method is highly applicable and extensible. A case of applying developed procedures to improve the EPS motor manufacturing process is discussed. As a result, the line balance efficiency and production capacity were increased to a satisfactory level.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.6
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• pp.2652-2659
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• 2011

The principal objective of this study was to provide the basic information on the sourdough bread made with probiotics and yeast(Saccharomyces cerevisiae) and to establish an optimum formula for the development of sourdough bread with high physiological, textural and sensory quality characteristics. The following mixing ratios of probiotics and yeast were used: Test 1, probiotics: yeast = 1.5 : 0.1; Test 2, 0.30 : 0.02; Test 3, 0.15 : 0.01(g/g). Fermentatioin using sourdough resulted in increase in number of probiotics in sourdough by 244~642 times but reduced pH in sourdough. Contributions by yeast in pH in sourdough were not as high as probiotics after the first fermentation of 15 hrs period of the dough. Among the three groups, bread volume, crumb firmness, crumb thickness, crumb elongation, compression force value, and specific volume of bread of bread were not significantly different. However, in sensory evaluation, flavor, taste, overall acceptance in sourdough produced by Test 2 markedly improved(p<0.05). These results show that Test 2 bread had improved sourdough properties, compared to Test 1 bread and Test 3 bread.

• Journal of Korean Tunnelling and Underground Space Association
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• v.18 no.2
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• pp.221-233
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• 2016

In order to estimate the performance of a conical cutter depending on the insert size, this study measured forces acting on conical cutters with different cutter spacings, penetration depths and skew angles using slim and heavy conical cutters. When cutter spacings ranged from 12 to 27 mm, the deviations of mean cutter forces with cutter depths appeared smaller compared to other cutter spacings. When skew angle is $0^{\circ}$, the optimal S/d ratio was obtained in the range of 4 to 4.5 for which specific energy of cutting was minimized. It were usually found in the range of 1 to 5. However, when skew angle is $6^{\circ}$, the optimal S/d ratio was obtained in the range of 1 to 3. The simple comparison results shows that the performance of slim cutter was superior to that of heavy cutter, but the use of heavy cutter can be effective, considering the cutter consumption and cutter damage when the strength of the ground is high enough.

• The Journal of the Korea Contents Association
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• v.16 no.11
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• pp.510-524
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• 2016

The 4-part series of , the 6-part series of , the 7 part-series of , and the 6-part series of differ in terms of their themes, although each one of them focuses on Asia. By winning prominent prizes around the world, these documentaries produced by the 'Insight Asia' Project Team of the Korea Broadcasting System (KBS) were affirmed of their competence in producing quality material. The purpose of Insight Asia Project was to improve the quality of KBS documentaries, and to make them competitive in the world market, Europe in particular. The specific goal 'Insight Asia' Team set for itself was to produce, in 5 years' time, documentaries of equal caliber to the (pre-Murdoch) National Geographic and the BBC. Unfortunately, the "Korean Wave," which was once active in the drama genre, was in stagnation at the time the team was being launched. As a result, KBS shifted refocused on documentaries as its driving force and provided detailed minute plans of action. However, the 'Insight Asia' Project was suspended abruptly in its fourth year, after a change in management in the network, and a discussion or evaluation on 'Insight Asia' Project never occurred. This study's objective is to retrace how the project 'Insight Asia' had been developed, and to clarify its meaning with respect to the KBS's globalization project. For this study, producers who participated in the project were interviewed.