• Journal of Plant Biotechnology
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• v.47 no.2
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• pp.157-163
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• 2020

Calmodulin (CaM) mediates cellular Ca²⁺ signals in the defense responses of plants. We previously reported that GmCaM-4 and 5 are involved in salicylic acid-independent activation of disease resistance responses in soybean (Glycine max). Here, we generated a GmCaM-4 cDNA construct under the control of the cauliflower mosaic virus (CaMV) 35S promoter and transformed this construct into potato (Solanum tuberosum L.). The constitutive over-expression of GmCaM-4 in potato induced high-level expression of pathogenesis-related (PR) genes, such as PR-2, PR-3, PR-5, phenylalanine ammonia-lyase (PAL), and proteinase inhibitorII (pinII). In addition, the transgenic potato plants exhibited enhanced resistance against a bacterial pathogen, Erwinia carotovora ssp. Carotovora (ECC), that causes soft rot disease and showed spontaneous lesion phenotypes on their leaves. These results strongly suggest that a CaM protein in soybean, GmCaM-4, plays an important role in the response of potato plants to pathogen defense signaling.

• Journal of Dairy Science and Biotechnology
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• v.32 no.1
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• pp.55-62
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• 2014

This study aims to suggest a management system consisting of functional ingredients by establishing guidelines for the analysis of functional animal products in Korea. Further, the guidelines can be used for validity tests of functional animal products. In addition, we can standardize the management system for details, and frame new laws for functional animal products. We researched the current studies on the analysis and assessment of functional foods, and established standard methods of analysis. We devised new analysis and assessment techniques to determine the efficacy and safety of functional ingredients for the legislation and management of functional animal products. This study may contribute to not only the safety and quality of functional animal products but also to enhancing the nation's health and the national image as being health-oriented, through improvements in the productivity and quality of functional animal products.

• Environmental and Resource Economics Review
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• v.20 no.3
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• pp.489-529
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• 2011

When greenhouse gas mitigation policies are implemented, energy intensive manufacturing industries are influenced much due to an increase in cost. However, industries that have price setting power are damaged less by the policies. Therefore, this paper analyzes vulnerability of energy intensive manufacturing industries to the policies by measuring price setting power of the industries. We analyzed price setting power model through ECM, employing the import prices and wages as independent variables. The industries that their prices react to import prices are price takers, which their prices are determined by rival's ones. On the other hand, the industry that their prices react to wages that mean domestic cost are price setters, and they will be less vulnerable to the policies. In addition, fluctuation of energy prices would be reflected in import prices because it influences other countries than my one. Thus, we employed energy prices as control variable to measure the net effects of import prices. As empirical results, petroleum products, chemical products, non-metallic mineral products, textiles, and motor vehicles sector have price setting power, so the industries have competitiveness on greenhouse gas mitigation policies.

• Journal of Food Hygiene and Safety
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• v.13 no.4
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• pp.388-393
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• 1998

Recently there has been an increasing amount of foreign livestock products distributed in the domestic market due to the market opening. Some vicious dealers sell the foreign beef in the trade name of the native beef during the final distribution step to arouse the social criticism frequently. In this report, we investigated a method to distinguish the native beef from the foreign one scientifically using the PCR-RAPD, a recent gene technique. Hygienical safety was also examined using a microbiological test for toxicity of Escherichia coli 0157:H7 and the food poisoning bacteria. The conditions of DNA amplification for the PCR analysis were $1{\times}Taq$ polymerase buffer, 1.5 mM $MgCl_2,\;50\;\mu\textrm{M}$ dNTP, 100 ng primers, 2.5 unit Taq polymerase and 5~20 ng template DNA, with the fmal volume of $50\;\mu\textrm{\ell}$. The size of the amplified product was detected mostly in the range of 0.5~2.0 kbp. The size of DNA, gene marking factor, which could be a criterion distinguishing the native beef from the foreign one, appeared approximately 1.2 kbp. The native beef was distinguished from the foreign beef with more than 90% of confidence by the gene marking factor. This method was expected to be useful in the breed discrimination between the native beef and the foreign one. The hygienical test results showed that, fortunately, neither Salmonella spp. and Listeria monocytogenes which form a principal cause of the food poisoning nor Enterohemorrhagic Escherichia coli : EHEC which have provoked a recent social disturbance, were detected at all.

• Journal of Food Hygiene and Safety
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• v.22 no.1
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• pp.15-22
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• 2007

Health functional foods refer to food which manufactured in the form of a tablet, capsule, granule or pill, using materials and ingredients with useful function for a human body in Korea. It needs to be confirmed as safe. Microbiological analyses on 37 samples of botanical raw materials used in the health functional food were performed. Microbiological analyses and probability of irradiation using PSL on 4 samples of aloe powder products were studied. In health functional food ingredients APC was $10^{3}-10^{6}\;CFU/g$ and coliform counts were $10^{2}-10^{5}\;CFU/g$. Among 37 samples B. cereus were found in 12 samples. Four samples of aloe powder products were tested for possible irradiation using preliminary PSL, Two samples of aloe powder products showed positive on preliminary PSL test for irradiation.

• The Korean Journal of Mycology
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• v.35 no.2
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• pp.115-120
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• 2007

Powdery mildew caused by Podosphaera fusca is one of the most important diseases in leafy lettuce (Lactuca sativa L.). Since the disease has been a threat to safe cultivation of leafy lettuce, its control methods have to develop to produce good quality of lettuce for farmer and consumer. Occurrence of lettuce powdery mildew is increasing more and more due to continuous cultivation of lettuce all through the year, non-removal of diseased plant parts of lettuce, spray of inadequate fungicides by mistaken acknowledge of lettuce powdery mildew for lettuce downy mildew, etc. The control effect of five fungicides against lettuce powdery mildew was examined in a plastic greenhouse located in Suwon. When fungicides were sprayed three times at 10 days-intervals in the early stage of occurrence of powdery mildew, the incidence of powdery mildew in the plants treated with kresoxim-methy SC, azoxystrobin SC, Ampelomyces quisqualis AQ94013 WP, Paenibacillus polymyxa AC-1 SC and Bacillus subtilis Y 1336 WP was 0.7%, 0.7%, 26.0%, 36.7% and 42.0%, respectively, whereas the incidence of non-treated control was 55.3% on eight days after final application. Phytotoxicity of five fungicides tested was not observed in lettuce seedling plants.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.16 no.2
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• pp.71-85
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• 2016

The purpose of this research is to study technical and policy improvements of carrier billing services, which are a developing and growing industry, by adopting a meta-analysis method. Implications were derived from studying 15 years-worth of academic research papers (from 2001 to 2015), by analyzing the trends over a total of 109 such research papers on carrier billing services. First, looking at the characteristics of the main studies of the papers from 2008 to 2009, it papers appeared that dealt with preventing fraudulent transactions and preserving consumer protection. Privacy, policy proposals and studies for new systems were researched from 2010-2012. Service, success factors, damage prevention systems research, law, and institutions were discussed in 2013-2015 mainly. Second, the research showed that the number of carrier billing service studies increased due to social issues(telecommunications billing services deregulation, the emergence smartphones, fraud). Third, in sectorial research results, technology was the focus area of 47 papers (43.1%), the service sector was the focus of 39 pieces (35.8%) and law and policy improvement accounted for 23 pieces (21.1%). The study of technology and service areas was the most active and according to changes in the environment, law and policy improvement were second to most active. This study will contribute to improving relevant institutions and research directions about study trends in carrier billing services.

• Korean Journal of Social Welfare
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• v.56 no.3
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• pp.113-133
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• 2004

Although National Health Insurance(NHI) in the South Korea has guaranteed access to health insurance coverage to virtually all the people, a significant portion of out-of-pocket spending can create substantial financial burdens for some beneficiaries, particularly those with low incomes. Previous studies have estimated the magnitude of out-of-pocket spending by types of chronic illness or in- and out-patients. Prior estimates, however, have not given a complete picture of the impact of health care costs on lower-income populations. The result from this study shows that 20 percent of beneficiaries in the lowest-income quintile spent more than twelve percent of their household equivalent income out-of-pocket health services, whether they were enrolled in a Health care services or not. In comparison, the beneficiaries in the highest-income quintile level spent only 2 percent of their income out-of-pocket on health care. Also, the regression analysis suggests that age, household income, number of chronic illness, type of hospital in addition to the number of usage may affect the size of out-of-pocket spending.

• Review of Culture and Economy
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• v.21 no.2
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• pp.175-196
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• 2018

When social disaster which is a phenomenon that causes a big wave to the social members occurs, the members of the society are anxious and show feelings of shame or guilt over behaviors that are against social norms. This sense of guilt is expected to reduce consumption of arts having its luxury and hedonic characteristics. The purpose of this study is to identify the causes of the decline in art consumption at the time of social disasters and we focus on guilt. We hypothesize that guilt for art consumption at the time of social disasters will increase as the tendency toward guilt is higher and the empathy tendency is higher. A result of the questionnaire survey of 286 people shows that the higher the guilt for art consumption in the social disaster situation, the more the art consumption decreased and the guilt changed depending on the degree of personal guilt and sympathy. This study contributes to explaining the decrease of art consumption in a big social phenomenon in recent years.

• Clean Technology
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• v.25 no.3
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• pp.263-272
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• 2019

Air pollutants have a high impact on everyday life as well as on human health; therefore, new technologies such as low-emission vehicles and add-on systems for air pollutant reduction are needed for our society. However, the environmental benefits and costs of those technologies are not taken into account in existing economic feasibility assessments, which is a barrier that needs to be overcome for green technology to achieve wide dissemination and fast penetration in the market. Thus, this study develops a methodology to assess the economic feasibility of an air pollutant reduction technology by taking into account the social costs from air pollutants and carries out a case study to validate the methodology. Because the social unit costs for air pollutants have not been evaluated yet in South Korea, the methodology uses the social unit costs evaluated for the European Union that are then converted to those for South Korea based on the measuring criteria for vehicle emission gases, parity purchasing price, foreign currency exchange rate, and customer price index. The social unit costs for South Korea are used to assess economic feasibility. A case study was performed to assess the economic feasibility of a dual fuel system using diesel and compressed natural gas by taking into account social costs from air pollutants as well as economic costs. This study could contribute to assessing the true economic feasibility of green technology, projects, and policy related with air pollutant reduction.