• Cross-Cultural Studies
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• v.41
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• pp.321-349
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• 2015

This paper is to make a comparative study between George Sand and Na Hye-sok through their lives and works. The research found that George Sand and Na Hye-sok had similar views about the institution and social system of their age. Both women were aware of importance and necessity of education and the arts but showed a clear distinction between their beliefs in education and the arts. George Sand found that education was an indispensable part of women's lives but found that educationforwomentotheageofSandwasuseless. For this reason she continued to assert a substantial reform concerning women's education. In addition, she argued that everyone should have been given the same opportunities regardless of gender or class. Na Hye-sok, meanwhile, looked at women's education in a more realistic perspective, that is to say to make money. The two women showed remarkable differences in the view of art. This is evident from the presence of a responsibility and a sense of purpose as an artist. George Sand was imbued with a sense of purpose and clarified her own belief at the beginning of her activities as a writer. She wanted to inform the suffering of the weak through her writing and to contribute to build a Utopia where everyone could be happy to live beyond the boundaries of gender. However, Na Hye-sok did not reveal her own clear sense of purpose to her art activities. Art is not just a job - it's a vocation. Na Hye-sok was enthusiastic but didn't have a sense of purpose. She should have had a vocation and a sense of purpose. Na Hye-sok was lacking of responsibilities and obligations as a pioneer of Western painting. If there were a distinct vocation and a sense of purpose to Na Hye-sok as an artist, she would have left a trail as valuable as that of George Sand.

• Korean Journal of Soil Science and Fertilizer
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• v.1 no.1
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• pp.27-41
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• 1968

In order to clarify the effect of various forms or phosphate on the production of paddy in Korea and to find out the superiority of any form, a number of field and pot experiments involving various phosphate fertilizers were carried out in addition to conducting one each of sand culture and soil culture pot experiments in 1963 and 1964. The results of these studies are summarized as follows: 1. In sand culture experiment, the best effect of a phosphate fertilizer was obtained with the mono-calcium phosphate which is soluble in water, followed by citric acid soluble phosphate such as fused phosphate and di-calicum phosphate. However, in the pot culture and field experiments, fused phosphate had shown it's superiority than triple superphosphate which contains water soluble form of phosphate followed by hypo phosphate, roasted phosphate, compound fertilizer, and slag phosphate. The effect of rock phosphate was the least in most cases. 2. The superiority of fused phosphate to triple super phosphate in soil culture was supposed to be: a) The fused phosphate can neutralize the soil acidity. b) The fused phosphate can supply magnesium and magnesium lead to the balanced conditions of exchangeable bases in soils. c) The magnesium in the fused phosphate helps the transportation of phosphate, and regulate the absorption of the element.

• Journal of Practical Agriculture & Fisheries Research
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• v.6 no.1
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• pp.63-72
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• 2004

This study was conducted to determine the growth and properties of green soybean sprouts(Vigna umbellata Thunb.) in soil culture. Patkong which is a small grain variety was sawn on electric heated hot bed in the greenhouse. Temperature of the culture bed were respectively 17, 20, 25, and 30℃ and water temperature were respectively 14, 17, 20 and 25℃. The kinds of soil used for this study were upland soil, sand, peatmoss and Pearlite, loess, loess and activated carbon. BA was treated in the concentrations of 240 times, 80 times, 40 times besides control. High temperature of 25 and 30℃ increased sprout yield compared to lower temperature but caused to decay from 7 days after sawing. Thus, the most optimum temperature for soil culture was 20℃. The best soil was sand of which increased fresh weight of 850g during same period. Addition of BA was most effective to promote sprout growth in the concentration of 80 times. Compared to general soybean sprouts, green soybean sprouts were 50% higher in fiber but 72% lower in glucide. Vitamin B was 200% higher in green soybean sprouts but vitamin C was higher in general soybean sprouts.

• Journal of the Korean Society of Costume
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• v.28
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• pp.213-223
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• 1996

Woolen fabrics were manufactured in Korea since the early prehistoric period and were manufactured and used from the period of the three Kingoms and Koryo through the Chosonera. These materials were developed in to woolen fabrics through a tradition of thou-sand years. In Korea the Orient Culture of no-madic tribes and Mesopotamia Culture of stock-farming come together and developed these original woolen fabrics cultures. During the Chosen period woolen goods were frequently manufactured and used. Those re-mains consist of various hats and shoes made up of felt. And the remains which of a kind of woolen fabrics were made from the wool materials. There were various stock farms and supplies a woolen craftsman needed the wool materials. There were various stock farms and supplies a woolen craftsman needed the wool materials. And there were especial woolen goods shops as Choung Po Joun.

• Journal of Plant Biology
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• v.9 no.3_4
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• pp.14-18
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• 1966

1. The effects of saline and alkaline salts on the content of phosphorus in the leaves of selected vegetable plants under soil and sand culture was investigated. 2. The reduction of growth was associated with increasing intensity of salts, although no significant differences was evident. 3. Phosphorus content in the leaves of two plants was depressed with increasing concentration of two typs of salts. 4. It was noticed that the phosphorus content increased with treated salts. That is, phosphorus content was higher in the leaves of treated salt plots than that of control plots and the difference was significant in the soil culture. 5. The values of the phosphorus content were higher in the leaves of two crops of NaCl plots than that of $Na_2CO_3$ plots and the difference was significant in Radish.

• Journal of Microbiology and Biotechnology
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• v.28 no.1
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• pp.95-104
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• 2018

Biosurfactants or microbial surfactants are surface-active biomolecules that are produced by a variety of microorganisms. Biodegradability and low toxicity have led to the intensification of scientific studies on a wide range of industrial applications for biosurfactants in the field of environmental bioremediation as well as the petroleum industry and enhanced oil recovery. However, the major issues in biosurfactant production are high production cost and low yield. Improving the bioindustrial production processes relies on many strategies, such as the use of cheap raw materials, the optimization of medium-culture conditions, and selecting hyperproducing strains. The present work aims to obtain a mutant with higher biosurfactant production through applying mutagenesis on Bacillus subtilis SPB1 using a combination of UV irradiation and nitrous acid treatment. Following mutagenesis and screening on blood agar and subsequent formation of halos, the mutated strains were examined for emulsifying activity of their culture broth. A mutant designated B. subtilis M2 was selected as it produced biosurfactant at twice higher concentration than the parent strain. The potential of this biosurfactant for industrial uses was shown by studying its stability to environmental stresses such as pH and temperature and its applicability in the oil recovery process. It was practically stable at high temperature and at a wide range of pH, and it recovered above 90% of motor oil adsorbed to a sand sample.

• International Journal of Advanced Culture Technology
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• v.3 no.2
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• pp.15-24
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• 2015

Currently, abundant wastes from the palm oil refining process have been generated which are hard to handle. Spent Bleaching Earth (SBE) is the solid waste from this process and leads the cost of elimination to the company. This study aims to utilize the SBE as the alternative material in the non-fired wall tiles. The main raw materials used in non-fired wall tiles consist of laterite soil, fluvial sand, and Portland cement. The experimental formulas have been conducted and divided into 3 groups by varying the percentage of the SBE in main raw materials. The specimens of material mixture have been produced by uniaxial pressing at 100 bars, dimensions in $50{\times}100{\times}8mm$. These specimens are sprayed with water and cured in the air for 7 days. After that, bending strength and water absorption test of these specimens has been performed. It can be concluded that the best formula with the percentage of laterite soil, fluvial sand, Portland cement, and SBE are 60.94%, 13.125%, 22.5%, and 3.435%, respectively. Its bending strength and %water absorption are 0.68 MPa and 5.64%. Material costs of specimen are approximately $0.00276 USD/100g. Furthermore, the comparison of curing period between 7 days and 30 days has been performed. The 30 days of curing period can improve the bending strength of the specimen, but there is no effect on water absorption.

• Korean Journal of Environmental Agriculture
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• v.19 no.5
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• pp.433-441
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• 2000

A feasibility study was performed to examine the agronomic application of treated sewage on paddy rice culture by field experiment for two consecutive years. The domestic sewage was treated by the constructed wetland system which was in subsurface flow type and consisted of sand and macrophyte. The effluent of the wetland system was used for irrigation water. The effluent was diluted to maintain the total nitrogen concentration below $26mg{\cdot}L^{-1}$ in the first year and used without dilution in the second year experiment. Growth components and yields were compared against the CONTROL plot where conventional method was applied. And also, soil characteristics of the plots before and after reclaimed sewage irrigation were analyzed. Generally, addition of the treated sewage to the irrigation water showed no adverse effects on paddy rice culture, and even enhancement was noticed in both growth and yield. Irrigation of treated sewage after concentration adjusted with conventional fertilization showed the better result, and the yield exceeded that of CONTROL case where clean water was irrigated. Soil characteristics changed after irrigation, and significant EC increasing was observed for the reclaimed sewage irrigation plots. From this study, it appears that reuse of treated sewage, as supplemental irrigation water could be a feasible and practical alternative. For full-scale application, further study is recommended on the specific guideline of major water quality components in treated sewage for irrigation and public health.

• Journal of the Korean Society of Costume
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• v.24
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• pp.103-120
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• 1995

The Xinjiang Uighur Autonomous Region to from the most of Eastern turkistan is located at North-wetern part of China, and it is the center to form the famous silk-road historically. In th exinjiang Uighur Autonomous Region there are 47 nationalities. In this study, the researcher studied the historical background, and the traditional culture about dress sand ornaments of 4 nationalities (that is Uighur, Kazakh, Kirgiz and Tajik). The results of the present study are as follows : In the basic structure of traditional costume by races, there is not big difference. Then , in men , the trousers and the shirts of funic type become the basis with the style which is convenient to act. And , to wear vest , or jacket , or chanban, over it makes a little difference . In women also, same structure shows with the form to wear vest or outerwear, on the basis of one piece. But , in a small hat, heat wear, color contrast, and decoration element etc. , strict difference is showing. After all, they show very similar clothing life culture basically in natural environment, religion , and life habit etc. But, the discrimination is made in the detailed side. So , it can be said that they show the conservative nature of nationalities, and have preserved the unigue identity of their own culture.

• Journal of Bio-Environment Control
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• v.11 no.4
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• pp.199-204
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• 2002

To overcome a decrease of Korean ginseng production caused by successive cropping, we have tried to develop a nutrient culture system for Korean ginseng production. For determining the optimal substrate, mixture of sand and TKS-2 (S＋T), peatmoss (P), reused rockwool (RR), and granular rockwool (GR) were investigated. The overall physico-chemical properties of RR fell into the reported optimal range for the ginseng cultivation. However, bulk density of S＋T was a little higher than that of soil in Korean ginseng fields. The top fresh weight of the ginseng was high in RR and S＋T substrates. The root fresh and dry weights in the RR were remarkably greater than that in the conventional soil (CS) of Korean ginseng fields. In terms of ginseng quality, the vitamin C content of ginseng root in nutrient culture was higher than that in CS. However, the contents of crude saponin and total ginsenosides in ginseng between in the nutrient culture and in the soil culture did not show any significant differences.