• Journal of Korean Home Economics Education Association
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• v.10 no.2
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• pp.131-144
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• 1998

The lack of characteristical understanding of the Home Economics Education will have difficulty in achieving the goal of the Home Economics Education. To allow the Home Economics Education class in school contribute toward the enhancement of the quality of life, it is inevitable to reinforce the recognition of the importance and necessity of the Home Economics Education and to newly propose a directional guidance forward the coming 21st century. The purpose of this study was to provide basic data for planners of the future Home Economics Education by surveying research administrators in charge of programming the overall school curriculum. This study was conducted under the following procedure to have the outcome as follows ; 1. Answers from respondents of age over 50 or careers over 16 years tended to grasp the goal of Home Economics Education in relation to the enhancement of quality of life rather than to the accumulation of knowledge, skill or capacity. 2. Of all the surveyed, 9.64% regarded Home Economics Education as an essential part of school education and the positive ratio was higher with younger respondents. 3. To the question asking if the high school Home Economics Education could have influence on one's capacity, 97.2% of the answerers said yes. The respondents with career under 15 year showed 100% of positive agreement in this matter and of age under 40 marked much higher ratio of 98.84% than the elders. 4. The overall recognition of the necessity for separate sections in Home Economics Education programmed in accordance with the 6th Revision of High School Curriculum displayed a considerably high ratio, with a little differences among age and job groups. The purpose of this study is to analyze and understand adolescents'culture, thereby to provide fundamental information for Preventive Education for Adolescents'Problems in Home Economic Education. 745 articles collected in computer communication service were used for the analysis. The data were analyzed by frequency and percentage using the SPSS/PC+computer program. The most important results of this study were as follows ; 1) Concerning 'Adolescent's Problems's, problems such as violence, homicide and robbery were treated with the greatest frequency. It was also analyzed that the older generations are highly inclined to understand adolescents'culture as a negative one, for example, 'delinquency'or 'immaturity'. 2) Although the area of 'Adolescents'Education'was treated most frequently reflecting the high educational concern in our society, the significant part of those articles were on wrongful educational administration. As much as 70.6% of the articles analyzed were on 'Education'and 'Problems'. Thereby it may be concluded that the other areas such as health, activities, worries, values and harmful environments ere treated respectively as only a 'subculture'or'fragmentary culture'. The articles containing correlations and interactions among them and certain alternative proposals were very rare. 3) The areas such as 'Worries and Counselling'and 'Health'were occupying only a small portion of the articles. The articles which were treating the practical worries and their resolutions were even rarer. 4) 'Values'of the adolescents tended to be viewed by the older generations very negatively. It was also found that the older generations gave the tendency to see the 'consumption culture'of the adolescents as a kind of 'counter culture'or'subculture'.

• Journal of Animal Science and Technology
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• v.53 no.4
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• pp.341-348
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• 2011

The antagonistic activities against animal entero-pathogenic bacteria were investigated with 444 natural substances fermented by various probiotics. A white rice product fermented (FWR) by Clostridium butyricum IDCC 9207 with a high growth inhibition of Salmonella typhimurium KCTC 2054 and Escherichia coli O157:H7 was selected. Also, a FWR was shown to suppress 8 among 21 pathogenic bacteria. In a mouse model with salmonella (${\times}10^9$ CFU/mouse) infection, 5 samples (200 ${\mu}{\ell}$/mouse/day) were fed to mice (n = 25) for 18 days. A fermented white rice containing C. butyricum IDCC 9207 (FWRCb9207) among 5 samples significantly inhibited the growth of salmonella, while in the control group (PBS, tetracycline) the number of salmonella increased. And the treatment with FWRCb9207 was found to increase the secretory immunoglobulin A (sIgA) level in the feces of salmonella-infected mice. The results obtained in this study suggest that a FWRCb9207 might be utilized as a feed additive in pigs and poultry diets.

• Korean Journal of Environmental Agriculture
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• v.31 no.4
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• pp.368-374
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• 2012

BACKGROUND: The urgency of feeding the world's growing population while combating soil pollution, salinization and desertification requires suitable biotechnology not only to improve crop productivity but also to improve soil health through interactions of soil nutrient and soil microorganism. Interest in the utilization of microbial fertilizer has increased. A principle of nature farming is to produce abundant and healthy crops without using chemical fertilizer and pesticides, and without interrupting the natural ecosystem. Beneficial microorganisms may provide supplemental nutrients in the soil, promote crop growth, and enhance plant resistance against pathogenic microorganisms. We mixed beneficial microorganisms such as Bacillus sp. Han-5 with anti-fungal activities, Trichoderma harziaum, Trichoderma longibrachiatum with organic material degrading activity, Actinomycetes bovis with antibiotic production and Pseudomonas sp. with nitrogen fixation. This study was carried out to investigate the mixtures on the soil microflora and soil chemical properties and the effect on the growth of lettuce and cucumber under greenhouse conditions. METHODS AND RESULTS: The microbial mixtures were used with each of organic fertilizer, swine manure and organic+swine manure and compared in regard to changes in soil chemical properties, soil microflora properties and crop growth. At 50 days after the treatment of microorganism mixtures, the pH improved from 5.8 to 6.3, and the EC, $NO_3$-Na and K decreased by 52.4%, 60.5% and 29.3%, respectively. The available $P_2O_5$ and $SiO_2$ increased by 25.9% and 21.2%, respectively. Otherwise, the population density of fluorescent Pseudomonas sp. was accelerated and the growth of vegetables increased. Moreover, the population density of E. coli and Fusarium sp., decreased remarkably. The ratio of bacteria to fungi (B/F) and the ratio of Actinomycetes bovis to fungi (A/F) increased 2.3 (from 272.2 to 624.4) and 1.7 times (from 38.3 to 64), respectively. Furthermore, the growth and yield of cucumber and lettuce significantly increased by the treatment of microorganism mixtures. CONCLUSION(S): These results suggest that the treatment of microorganism mixtures improved the chemical properties and the microflora of soil and the crop growth. Therefore, it is concluded that the microorganism mixtures could be good alternative soil amendments to restore soil nutrients and soil microflora.

• Journal of Life Science
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• v.27 no.7
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• pp.834-839
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• 2017

Propolis is a natural product collected from plants by honey bees product used extensively in traditional medicine for its antioxidant, anti-inflammatory, immunomodulatory and anti-cancer effects. Propolis exhibits a broad spectrum of biological activities because it is a complex mixture of natural substances. Ovarian cancer is the second most common newly diagnosed cancer from all cancers among women in Korea and the leading cause of death from gynecological malignancies. While most ovarian cancer patients initially respond to surgical debulking and chemotherapy, patients later succumb to the disease. Thus, there is an urgent need to test novel therapeutic agents to counteract the high mortality rate associated with ovarian cancer. In this study, we investigated the anti-cancer properties and the active mechanism of Australian propolis in human epithelial ovarian cancer A2780 cells. Our data revealed that propolis showed a cytotoxic activity in a dose-dependent manner. Flow cytometric analysis for cell cycle arrest and apoptosis using propidium iodide staning and annexin V-FITC indicated that propolis could induce cycle arrest in the G0/G1 phase and apoptosis in a dose-dependent manner on human epithelial ovarian cancer cells. These results suggest that the Australian propolis is potential alternative agent on ovarian cancer prevention and treatment.

• The Journal of the Korea Contents Association
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• v.20 no.3
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• pp.1-9
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• 2020

The purpose of this study is to verify the effects of ventilation corridor and derive adequate policy alternatives to its application for the city of Sejong, which is located in an inland of Korean Peninsula. In order to introduce the ventilation corridor in the city, it is necessary both to understand change on fresh air flow affected by the construction of new cities and to show its effects which are able to circulate air flow of the city. The study identified ventilation effects using computational fluid dynamics models. In particular, it analyzed change on wind speed and direction after constructing of a new town and cool air flow along the lowlands generated after sunset. In addition, it identified those of reducing particulate matter when arranging buildings conforming to the ventilation corridor at block level. The policy implications derived from simulation can be summarized as follows. First, it is desirable to plan ventilation corridors so that fresh air from mountains, forests, and valleys can flow into cities and mitigate the concentration of particulate matter. Furthermore, public facilities covering parks, plazas, and playgrounds should be installed preferentially to attract safe outdoor activities near to areas with low levels of particulate matter. Finally, it is adequate to prepare for a number of alternative plans by analyzing ventilation corridors when setting out district unit plan.

• Journal of the Economic Geographical Society of Korea
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• v.20 no.4
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• pp.453-485
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• 2017

One of the oldest chestnuts in economic geography is this: Cultural and creative industries strongly gather in large cities and this geographic concentration of economic activities leads to regional development. Of course, depending on the circumstances, such a proposition still holds good. But, under the current paradigm shift to knowledge-based economy, it may be open to question. This study aims to investigate financing and knowledge accumulation in the film industry through an alternative framework for explaining their spatial distributions, "formation mechanism of economic space." From the fact that their production organizations are formed on a project basis, project-based financing structure in the investment stage and knowledge accumulation process in the production stage form both axes of it. Film industry as the most mature industry among the cultural and creative industries does not always concentrate in a certain place (industrial agglomeration) or show metropolis-oriented preference. This allows us to reconsider our long brooding theory.

• Journal of the Korean Society of Marine Environment & Safety
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• v.24 no.2
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• pp.171-178
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• 2018

The ocean is a harsh environment and Korea Coast Guard officers often face the threat of death or going missing in the line of duty. In order to promptly identify unknown bodies during mishaps, Korea Coast Guard Research Center has established an identification system using the DNA of its officers. This collected DNA can also be entombed in National Cemeteries when the remains are not recovered. The storage, disposal and quality control of the materials are overseen by the Governing Committee according to the Enforcement Rules for the Human Biological Materials Storage Project for the Identification of Officers Killed or Gone Missing in Action. Approximately 700 bodies are found per year along the Korean coast. An alternative method should be put in place for when identification through fingerprints and teeth are not applicable due to severe decomposition or partial recovery. We believe it would greatly contribute to helping identify the unknown bodies if the storage project could expand its data to include marine industry workers, relevant researchers and those involved in marine leisure activities.

• Journal of Life Science
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• v.23 no.3
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• pp.443-447
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• 2013

This study was conducted to investigate the antimicrobial and anti-oral malodor effect of Schizandra chinensis extracts against oral pathogens. S. chinensis methanol (MeOH) extract showed better antimicrobial activities against oral pathogens than the S. chinensis hot water extract did. In particular, ethylacetate (EA) fraction of S. chinensis MeOH extract had the greatest effects against Streptococcus mutans, S. sanguinis, S. salivaris subsp. thermophols and Porphyromons gingivalis. The anti-malodor effect of S. chinensis against the generation of volatile sulfur compounds (VSC), such as hydrogen sulfide, methyl mercaptan, and dimethyl sulfide, was estimated using oral chroma in a practical study. The results showed that 2% MeOH extract of S. chinensis against the production of hydrogen sulfide, methyl mercaptan, and dimethyl sulfide had inhibitions of 91.15, 78.72 and 71.58%, respectively. These results showed that Schizandra chinensis extract had antimicrobial activity against several oral pathogens and exhibited significant effects on the inhibition of VSCs. Thus, Schizandra chinensis extract could be an alternative to available synthetic chemicals and oral hygiene products.

• Hwankyungkyoyuk
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• v.12 no.1
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• pp.205-224
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• 1999

This is a study of strengthening the practice of environmental education in the primary and secondary school music program. Since the world war II, the environmental situation has been getting worse and worse. So it is now a global issue to conserve energy and solving the ecological problems we are confronting. Solving the environmental problem is not just a scientist's task nor a specific school education subject's either, but a responsibility of all human beings. In this sense, it is necessary for every school subject, including music, should include elements of environmental education in its education contents. in this paper the researcher has tried to point out some reasonable aspects of environmental education guidelines which would be pursued through school music programs. In the music subject the following eight environmental education strategies could be suggested: 1. An affective aspect of music should be used in educating students to aware of the importance of environmental problems. 2. The effectiveness of employing music for various educational purposes should be implemented to make students environmentally enlightened individual. 3. The main issue of environmental problem must be used in various musical activities such as singing, implementing, composing and appreciating music. 4. By employing an alternative materials for making musical instruments, students and musicians can participate in environmental education program actively. 5. Music is analogues to life and nature. Thus it is highly suggested for teachers to teach students music more sincerely In a way of studying music more seriously, students could achieve environmental education goals by discovering the similarities of the nature of the environment and music as a human environment. 6. By appreciating many musical works of dealing with environmental problems and ecological problems, one could achieve the necessary goals of environmental education. 7. By enlarging the boundary of music including the sounds of nature such as birds' singing, sounds of winds and various streams and tree's trembling, music could achieve the major goals of environmental education. 8. By recognizing sounds as an important human environment, school music program could attain the goals of environmental education. The researcher also has mentioned about the characteristics of music as a schooling subject. and has provided with some detailed curriculum guidelines for strengthening environmental education programs in music classes. Some model lesson plans implementing the environmental education for elementary, junior high school and 10th grade music classes are also suggested followed by six specific teaching ＆ learning methods for environmental education.

• Journal of Microbiology
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• v.44 no.3
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• pp.301-310
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• 2006

Two pathways of ammonium assimilation and glutamate biosynthesis have been identified in microorganisms. One pathway involves the NADP-linked glutamate dehydrogenase, which catalyzes the amination of 2-oxoglutarate to form glutamate. An alternative pathway involves the combined activities of glutamine synthetase, which aminates glutamate to form glutamine, and glutamate synthase, which transfers the amide group of glutamine to 2-oxoglutarate to yield two molecules of glutamate. We have cloned the large subunit of the glutamate synthase (GOGAT) from Salmonella typhimurium by screening the expression of GOGAT and complementing the gene in E. coli GOGAT large subunit-deficient mutants. Three positive clones (named pUC19C12, pUC19C13 and pUC19C15) contained identical Sau3AI fragments, as determined by restriction mapping and Southern hybridization, and expressed GOGAT efficiently and constitutively using its own promoter in the heterologous host. The coding region expressed in Escherichia coli was about 170 kDa on SDS-PAGE. This gene spans 4,732 bases, contains an open reading frame of 4,458 nucleotides, and encodes a mature protein of 1,486 amino acid residues (Mr =166,208). The EMN-binding domain of GOGAT contains 12 glycine residues, and the 3Fe-4S cluster has 3 cysteine residues. The comparison of the translated amino acid sequence of the Salmonella GOGAT with sequences from other bacteria such as Escherichia coli, Salmonella enterica, Shigella flexneri, Yersinia pestis, Vibrio vulnificus and Pseudomonas aeruginosa shows sequence identity between 87 and 95%.