• Korean Journal of Soil Science and Fertilizer
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• v.44 no.1
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• pp.78-83
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• 2011

Phosphorus (P) which is required by all living plants and animals is an important input for economic crop and livestock production systems. Phosphorus containing compounds are essential for photosynthesis in plants, for energy transformations and for the activity of some hormones in both plants and animals. Loss of soil P to water can occur in particulate forms of P with eroded surface soil and in soluble forms in runoff, soil interflow, and deep leaching. The excessive losses of P from agricultural systems can degrade water quality of surface waters, resulting in accelerating eutrophication. Thus, P is often the limiting element and its control is of prime importance in reducing the accelerated eutrophication of surface waters. However, reserves of phosphate begin to run out, the impacts are likely be immense in terms of rising food prices, growing food insecurity. This paper reviews underappreciated resource as a key component of fertilizers and one of controversial pollutant in terms agronomy and environment.

• Journal of the Korean Institute of Landscape Architecture
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• v.24 no.3
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• pp.14-28
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• 1996

Purposes of this study were to provide the basic information for the management policy for more preserve and refreshing Gusumok-big and old tree. Fundamental directions for the protection and application of Gusumok were suggested by comparing and analyzing present conditions and remnant forms of Gusumok as preserved tree in Kyung-ju and its function and the role of Gusumok according to the civilization and diference between past and present. The main results of the study are as follows ; There are 121 Gusumok which designated as a preserved tree in Kyung-ju. It is distributed all over the Kyung-ju city uniformly and located in the enterance or the center of a village having high interests of most of residents. in the course of a civilzation, the percintage of a loss of an urban Gusumok is higher than that of a rural Gusumok and its function is also changed so much. A modern function of Gusumok can be divided into a positive and negative one. A positive function is the offer of amenity and the place of receation, formation of culture and ragulation of micro climate. A negative function is of psycholosical and functional reversed function. having a close relation with our life, Gusumok offers an amenity place to our life to make us feel soft and comfortable as well as developes the quality of our life. Gusumok has an important meaning in mordern society in that it contibutes to our village being better to live by having a historical meaning and creating a symbolic culture and history.

• Journal of English Language & Literature
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• v.64 no.3
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• pp.383-401
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• 2018

Wordsworth is a poet who thought seriously about problems of human's relation to the world as perceiving subjects. What he calls "the life of things" illustrates the enabling power of things and their vitalities at play in excess of human elements. Drawing on this, he provides insights into vital materialities that act upon, and are acted upon by, the collaborative circulation between human and nonhuman agency. This paper aims to reinvigorate the debate about Wordsworth's ethics of things in terms of such critical notions as things, objects, agency, and nonhumans in an attempt to explain what he envisions as new environmental realities built upon nonhierarchical, collaborative relationships between all participants. From the vantage point of things, we see clearly what has been neglected in the New Historicist critical method. It holds fast to the conceit that humans are entitled to have sole agential legitimacy, disregarding the vibrancy of things. They opt for the objectified matter or the (re)presented state of things. But in terms of Wordsworth's life of things, all participants have equal amounts of agency regardless of their forms and for that reason humans are expected to respect other things' sovereignty. Through encounters with things, things in their thingness show up for us, only to reveal the ineradicable rupture between themselves and their objectified forms.

• Korean Journal of Environmental Agriculture
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• v.27 no.1
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• pp.18-26
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• 2008

Behavior and decomposition velocity of pollutants on various forms from domestic sewage in sewage treatment plant were investigated in order to obtain the basic data for improving the removal efficiency of pollutants and to reduce the area in constructed wetland by natural purification method. The removal amounts of BODs and CODs in aerobic bed were significantly higher than those of the other beds. In aerobic bed, the removal amounts of IBOD and ICOD were more than those for SBOD and SCOD, respectively, whereas the removal amounts of BODs and CODs in anoxic and anaerobic beds were little different. The removal amounts of SSs in aerobic bed were also higher than those for the other beds, and the removal amounts of VSS in all beds were more than those for FSS. The removal amounts of DTN and DTP in all beds were more than those for STN and STP, respectively. In addition, the decomposition velocities of TBOD, TCOD and TSS in aerobic bed were 30.79, 17.15 and 29.96 $day^{-1}$. Moreover, the decomposition velocities of BODs, CODs and SSs in aerobic bed were very rapid than those in the other beds. On the other hand, the decomposition velocities of BODs, CODs and SSs in anoxic and anaerobic beds were a little different regardless of the forms of pollutant. The decomposition velocities constants of T-N in aerobic, anoxic and anaerobic beds were 4.78, 0.12 and 0.10 $day^{-1}$, respectively. Moreover, the decomposition velocities constants of T-P in aerobic, anoxic and anaerobic beds were 13.09, 0.12 and 0.13 $day^{-1}$ respectively. The decomposition velocity of T-Ns and T-Ps in aerobic bed were slightly rapid than those in the other beds, whereas the decomposition velocities of T-Ns and T-Ps in anoxic and anaerobic beds were slightly different regardless of the forms of pollutant.

• Journal of the Korean Society for Precision Engineering
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• v.16 no.6
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• pp.100-107
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• 1999

This paper describes a probabilistic remaining life assessment program for the creep crack growth. The probabilistic life assessment program is developed to increase the reliability of life assessment. The probabilistic life assessment involves some uncertainties, such as, initial crack size, material properties, and loading condition, and a triangle distribution function is used for random variable generation. The resulting information provides the engineer with an assessment of the probability of structural failure as a function of operating time given the uncertainties in the input data. This study forms basis of the probabilistic life assessment technique and will be extended to other damage mechanisms.

• Korean Journal of Human Ecology
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• v.19 no.3
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• pp.537-553
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• 2010

Culture represents forms of life appeared in various dimensions. Advertisements which represent these forms of life show the most important social and cultural phenomenon. The necessity of research on the cultural characteristics of society has been raised because the effectiveness of advertisement could have been varied depending on the cultural value. Moreover, within a society, values reflected by advertisements tend to vary in different eras. Thus, this study aims to clarify the differences between cultural values from different eras through an analysis of cultural characteristics and symptoms with consideration of the time flow. This study also examines the meanings of cultural characteristics highlighted by the study. For the investigation, two Korean women's magazines were selected, from 1955 to 2008. Data were analyzed using chi-squared test which was conducted with Crosstab using the PASW statistics 17.0 Program. The results were as follows: there were changing aspects from traditional values to modern values by years. Additionally, each period was described using several keywords. The keywords were divided by decade: in the '50s keywords were 'lifestyle change', 'material value increase' and the 'challenge to traditional values', in the '60s keywords were 'American culture acceptance', 'material success', in the '70s keywords were 'the rise of nonmaterial value', 'rationalism' and 'egalitarianism', in the '80s 'individualism', 'Life style and culture group differentiation', 'conspicuous consumption', in the '90s 'globalization', 'emphasis on personality sensitivity', 'health-oriented', 'improve the quality of life', while in the '00s keywords were 'spread of digital life', 'rational consumption patterns', 'the 3rd distribution'. Through the research, important changes in the cultural characteristics of Korea were observed. Furthermore, we may be able to think of the most effective way of advertising by identification of the cultural characteristics of the society.

• Journal of Microbiology and Biotechnology
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• v.14 no.1
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• pp.148-152
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• 2004

Bacillus polyfermenticus SCD and polyfermenticin SCD, named tentatively as the bacteriocin produced by B. polyfermenticus SCD, showed antimicrobial activity against Helicobacter pylori KCTC 2948 growth. When crude polyfermenticin SCD was added to the growing H. pylori cells, viable cell numbers were reduced, indicating antimicrobial action. The antimicrobial effect was increased remarkably at higher concentrations of polyfermenticin SCD and longer exposure. Morphological changes were observed in the bacteriocin-treated cells; in the exponential phase, they appeared as shrunken rods, while in the stationary phase, they showed coccoid forms.

• Proceedings of the Korea Concrete Institute Conference
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• 2002.05a
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• pp.773-778
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• 2002

The variance characteristics of the calcium carbonate contents along to the concrete cover depth takes the prediction method of remaining service life of concrete. Calcium carbonate contents were measured by the Thermo Gravimetric/Differential Thermal Analysis method at three point, depth of 0.25cm, 0.75cm, 1.25cm from the surface of concrete. This prediction method contain some assumption that the chemical protection conferred on steel is through a passive protective oxide film which forms on steel in an environment at or above a pH of 10.5$^{4)}$ .

• Journal of Microbiology
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• v.39 no.3
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• pp.232-235
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• 2001

Electrophoretic resolution of superoxide dismutase (SOD) from the highly UV-resistant bacteria, Deinococcus species revealed multiple forms of superoxide dismutases (SODs) in D. radiodurans, D. grandis, and D. proteolyticus, as judged from electrophoretic properties and metal cofactors. A single SOD occurred in both D. radiophilus and D. radiopugnans. Deinococcal SODs were either MnSOD, FeSOD or cambialistic Mn/FeSOD. The unique SOD profile of each mesophilic Deinococcus species, multiplicity and metal cofactors would be valuable in identifying Deinococcus species.

• The International Journal of Costume Culture
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• v.5 no.2
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• pp.42-52
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• 2002

The purpose of this research is to survey minpo(the nations pojagi), especially supo(the embroidered pojagi), of the Yi Chosun of Korea during the nineteenth century. This study explores the history and background of minpo, its characteristics, including forms, designs, materials, and how they related to women's daily life during the Yi Chosun in social and cultural aspects. There were minpos for use in everyday life as well as for special occasions such as weddings, funerals and religions rites, including Buddhist and other services. The research undertaken here is done by classifying minpos according to composition, design, pattern and motif.