• Journal of Wetlands Research
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• v.17 no.2
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• pp.130-138
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• 2015

According to the "Safety Evaluation Detailed Instructions (Dam)", a precise safety inspection is carried out for dams that exceed a certain scale. However, as the Hydrological Safety Evaluation from various evaluation standards is designed to evaluate the safety of existing dams considering PMF(Probable Maximum Flood), the evaluation is much less applicable for most agricultural reservoirs. Therefore, the Hydrological Safety Guidelines for agricultural reservoirs are expected to be re-evaluated considering the diverse risk factors with the coefficient model and AHP(Analytic Hierarchy Process) in this study. The coefficient model has been developed by selecting the hydrological safety superordinate subordinate evaluation factors to reflect diverse risk factors of agricultural reservoirs. This study indicated that in the short term, improving the safety check condition evaluation grade will be useful to improve the hydrological safety of the agricultural reservoir because it can be performed immediately.

• Korean Journal of Food Science and Technology
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• v.46 no.3
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• pp.276-282
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• 2014

An accurate and sensitive analytical method was established for the simultaneous determination of synephrine and n-methyltyramine contents by ultra-performance liquid chromatography (UPLC) with a fluorescence detector (FLD). A 70:30 (v/v) mixture of 10 mM sodium dodecyl sulfate (SDS) and acetonitrile was used as the mobile phase. The coefficient of correlation ($r^2$) was 0.9999 for both synephrine and n-methyltyramine, and their limits of detection (LOD) were 0.02 and 0.01 mg/kg, respectively. The percentage recoveries for synephrine and n-methyltyramine were 96.4% and 100.9%, respectively, from bitter orange (Citrus aurantium) samples. The synephrine and n-methyltyramine contents were 38.07-118.21 mg/kg and 0.27-0.56 mg/kg, respectively, in the orange fruit samples, while they were 14.61-120.39 mg/kg and up to 3.34 mg/kg, respectively, in the tested commercial orange juice samples. The differences in synephrine and n-methyltyramine content between orange fruit and commercial orange juice were not significant (p<0.05). These results suggest that UPLC-FLD can be applied to develop an analytical method of quality control for commercial orange juice.

• Journal of Food Hygiene and Safety
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• v.21 no.4
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• pp.204-212
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• 2006

This study was conducted to investigate the possibility of rapid and non-des tructive evalution of AV (Acid Value), IV (Iodine Value) and fatty acids in sesame oils. The samples were scanned over the range $400\sim2500nm$ using transmittance spectrum of NIRS(Near-infrared spectroscopy). A calibration equation calculated by MPLS regression technique was developed and correlation coefficient of determination for AV, IV, palmitic acid, stearic acid, linoleic acid and linolenic acid content were 0.9907, 0.9677, 0.9527, 0.9210, 0.9829, 0.9736 and 0.9709 respectively. The validation model for measuring the AV content had R of 0.989, SEP of 0.058 and IV content had R of 0.944, SEP of 0.562 and palmitic acid content had R of 0.924, SEP of 0.194 and stearic acid content had R of 0.717, SEP of 0.168 and oleic acid content had R of 0.989, SEP of 0.221 and linoleic acid content had R of 0.967, SEP of 0.297 and linolenic acid content had R of 0.853, SEP of 0.480 by MPLS. The obtained results indicate that the NIRS procedure can potentially be used as a non-destructive analysis method for the purpose of rapid and simple measurement of AV, IV and fatty acids in sesame oils.

• Fire Science and Engineering
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• v.29 no.1
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• pp.80-86
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• 2015

This study analyzed recent cases of ship fires explosions and investigated their problems and coping plans. Through analysis on the statistical figures, it was found that our nation's situations of maritime accidents by kind during the period of 2009~2013 showed the ratios of ship accidents caused by fires explosions was the highest in 2012 with 7.58% (55 cases) followed by year 2009 with 3.39% (34 cases), year 2010 with 3.39% (25 cases), year 2011 with 6.03% (57 cases) and year 2013 with 6.74% (43 cases), which indicates a steady increase in the number of ship accidents. Majority of reasons for ship fires explosions were lack of safety awareness. Since those accidents happen on the sea, fires, once they happen, tend to get serious due to absence of on board & nearby fire extinguishing facilities, public fire service's uneasy access to them and great influences of natural factors such as wind and etc. Ship fires explosions are special cases unlike what happens to general edifices. So, their coping plans should focus on preventive measures since the damages those cases bring about can be detrimental. For this reason, it's necessary to research precise evacuation plans, develop ship structure & materials reinforcing fire resistance to secure more time for evacuation and enhance people's safety awareness by implementing thorough safety training.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.4
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• pp.216-223
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• 2017

Chemicals are an indispensable element of modern society to the extent that more than 15 million species are commercially available worldwide. However, among them are chemicals whose toxicityposes a threat to public health and the environment, as illustrated by past cases of chemical accidents, which revealed their danger to human life. Chemical accidents can spread and cause huge damage in a short time because of their characteristics. Therefore, it is important to do as much as possible to prevent them in advance and to respond promptly after an accident. The legal system pertaining to domestic chemical substances is the "Toxic Chemical Control Act", which is made up of the "Act on the Registration and Evaluation of Chemicals" and the "Chemical Control Act" since 2015. Under this law, the Comprehensive Chemical Information System and Chemical Substance Data Processing system were established and are still operating;however, chemical accidents are still occurring. These systems are comprehensive information systems aimed at providing chemical information rather than acting as chemical response systems, which has limited the effectiveness of accident response. This study is intended to analyze the information management systems, response management systems and the basis of chemical substance management support for hazardous chemicals and suggest ways to improve the legal system for developing and operating chemical response systemswithin a municipality.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.4
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• pp.599-607
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• 2017

Since 2015, small and medium domestic enterprises that treat more than a certain quantity of chemical substances in accordance with the Chemical Substance Control Act are obliged to submit an off-site impact assessment and risk management plan. In order to reduce the administrative and economic burden of the risk assessment, its impact was determined. Toxic leaks of nitric acid, methanol, and acetic acid were estimated and the correlations (between them?) were calculated. In addition, the correlations of this study were used to compare the KORA results according to the accident scenarios of the actual workplace and the extent of the damage as a function of distance in the case of toxic leaks. In this study, the correlation formula of the materials can be used to quickly determine the damage distance in the event of the accidental leakage of materials in the road or workplace, and to prepare emergency plans and respond to emergencies more quickly.

• The KIPS Transactions:PartD
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• v.15D no.2
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• pp.271-284
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• 2008

Self-healing is an approach to evaluating constraints defined in target system and to applying an appropriate strategy when violating he constrains. Today, the computing environment is very complex, so researches that endow a system with the self-healing's ability that recognizes problem arising in a target system are being an important issues. However, most of the existing researches are that self-healing developers need much effort and time to analyze and model constraints. Thus, this paper proposes an automated approach to determine problem arising in external and internal system environment. The approach proposes: 1) Specifying the target system through the models created in design phase of target system. 2) Automatically creating constraints for external and internal system environment, by using the specified contents. 3) Deriving a dependency model of a component based on the created internal state rule. 4) Translating the constraints and dependency model into code evaluating behaviors of the target system, and determinating problem level. 5) Monitoring an internal and external status of system based on the level of problem determination, and applying self-healing strategy when detecting abnormal state caused in the target system. Through these, we can reduce the efforts of self-healing developers to analyze target system, and heal rapidly not only abnormal behavior of target system regarding external and internal problem, but also failure such as system break down into normal state. To evaluate the proposed approach, through video conference system, we verify an effectiveness of our approach by comparing proposed approach's self-healing activities with those of the existing approach.

• Journal of the Korean Association of Geographic Information Studies
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• v.18 no.1
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• pp.105-119
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• 2015

A case study to test the open API service functions of Geographic Information Open Platform(Vworld) for Environmental Impact Assessment was carried out for improving the function of Environmental Impact Assessment Geographic Information System(EIAGIS) which is one of Environmental Impact Assessment Supporting System(EIASS) used for current Environmental Impact Assessment. Followings are the summary of the study. First, utilization of EIAGIS was low since DB renewal was limited and the quality of 2D based topographic information was low. A new service which could respond to practitioners' needs could be developed to use a open API service of Vworld provided by the Ministry of Land, Infrastructure and Transport to make up those disadvantages. EIASS with Vworld could provide a consulting service from the beginning stage of business plan and make improvements of confidence as well as fast agreements since both consultation agencies and assessment agencies are using a same program during Environmental Impact Assessment process with customized information.

• Korean Journal of Breeding Science
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• v.40 no.3
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• pp.286-290
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• 2008

Many important traits have been tagged allowing plant breeders to apply marker assisted selection (MAS) in rice. PCR itself is simple to set up, and requires little hands-on time. However, a crucial limiting step of MAS programs is the reliable and efficient extraction of DNA which can be performed on thousands of individuals. In this study, We describe a modification of the DNA extraction method, in which cetyltrimethylammonium bromide (CTAB) is used to extract DNA from leaf tissues for suitable MAS in rice. We followed the standard 2% CTAB extraction method in all the procedure. In addition we used the 1.2 ml 8-strip tube instead of 1.5 ml E-tubes to fit the 8-multichannel pipette and employ the 96 well plate to use the swing bucket centrifuge. Our modified CTAB DNA extraction method offers several advantages with respect to traditional and simple methods. 1) adult leaf samples collected in paddy field are applicable. 2) 96 leaf samples can be homogenized only one-time by using tungsten carbonate bead and 96well block. 3) semiautomatic loading method using 8-multichannel pipette from DNA extraction to electrophoresis of PCR products. 4) our system can extract about 400 leaf samples per day by only one technicion. Therefore, this method could be useful for marker assisted breeding in rice.

• Korean Journal of Breeding Science
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• v.41 no.4
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• pp.568-573
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• 2009

A new soybean variety, "Singang", was released by NICS, RDA in 2008. It is resistant to soybean mosic virus (SMV), which is one of the most serious diseases in soybean production. "Singang" had been developed for seven years by molecular marker-assisted selection (MAS) breeding method using recurrent parent, "Sowon", and donor parent, "L29" which has the SMV-resistance gene, Rsv3. Selected promising breeding line, Suwon 242, was evaluated in yield trials for 2 years from 2005 to 2006 at NICS. Regional yield trials were performed for 3 years from 2006 to 2008 in five locations including Jeju. Agronomic characteristics of "Singang" is a determinate growth habit, purple flower color, grey pubescence, yellow testa, light brown hilum and lanceolate leaflet shape. "Singang" showed the similar performance to "Sowon" cultivar. This variety showed 3 days shorter in days to maturity than the check variety (Pungsannamul). The average yield under regional yield trials in five location was 2.78t/ha. It is adaptable to the whole country except for Gangwon province.