• Journal of the Korea Organic Resources Recycling Association
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• v.3 no.2
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• pp.103-114
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• 1995

Since autoheated thermophilic aerobic digestion (ATAD) process has various advantages for the treatment of high-strength organic wastewater, active research and field application has been applied in U.S.A. and Canada, recently and the interest in ATAD process has been elevated for treating high-strength organic wastewater efficiently in Korea. Therefore, various experiments were carried out to evaluate the feasibility of ATAD process for the treatment of pig manure wastewater. The results of this study showed possibility to reuse pig manure wastewater as wet fodder or liquid compost, since ATAD process led excellent stabilization on the basis of odor and putrefaction. However. digested sludge can not be provided as wet fodder to most of hog farms without changing dry feeder system into wet system and as liquid compost to hog farms not having their own grass land. Since the results showed that the increase of temperature in reactor was resulted not from energy by biological activity. but from mechanical mixing energy. the reactor investigated in this study was against the principle of ATAD process. Therefore. if pig manure wastewater treated by ATAD can not be utilized as wet fodder. it is not economical to adopt ATAD process only for the treatment of wastewater.

• Journal of Korean Society of Steel Construction
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• v.24 no.3
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• pp.325-336
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• 2012

Smart base isolation systems developed for structures in high seismic regions cannot be directly applied to structures in regions of low-to-moderate seismicity, such as Korea. Therefore, the problems that occur by applying the smart base isolation system for high seismic regions to the structures in regions of low-to-moderate seismicity have been investigated in this study. To this end, a five-story building is used as an example, and an MR damper and low damping elastomeric bearings were used to compose a smart base isolation system. Artificial earthquakes are simulated for ground motions in regions of high and low-to-moderate seismicity. Based on numerical simulation results, the MR damper capacity that can provide good control is quite different among regions of high and low-to-moderate seismicity. Moreover, it is noted that the properties of a smart base isolation system for the regions of low-to-moderate seismicity should be carefully designed because the base isolation effects of the smart base isolation system for high seismic regions deteriorate when it is applied to the structures in regions of low-to-moderate seismicity.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.5 no.2
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• pp.63-67
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• 1972

Preliminary creel-holding test of live anchovies which are to be used as bait for the skipjact fishery, was conducted on the fish caught by set net and lift net. They were held in the creels constructed with bamboo frame and minnow netting, during the period of Oct. 24-Nov. 28 in 1972. If was found that the survival rate of the creel-held anchovies varied by the size of fish, the towed distance and speed of fish-carrying creel in which the fish were accomodated after catchi. 1. The survival rate of the medium size anchovies, 7.8-9.6cm in length and 4.6-4.8 g in weight, was $70-92\%$ during the holding period of 20-35 days. Whereas, only $16\%$ of juvenile anchovies, 5.3cm in length and 1.0 g in weight, were survived for 19 hours after catch. 2. During the time of transport, the farther and faster the creel containing fish were towed, the less fish were survived in the subsequent holding period. 3. Though both the set net and lift net could be fairly used to catch live anchovy, no decision between these two gears could be made in this experiment to determine the superiorness for the subsequent survival rate.

• The Korean Journal of Food And Nutrition
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• v.16 no.3
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• pp.187-191
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• 2003

It was performed to find out difference of the nutritional contents between chungjung chicken meats grown chemicals free and general chicken meats. The chungjung chicken was eat and given feeds of good quality mixed living microbial agent, power of ginseng leaves and by-product of extract liquefied sea foods from fishes producted clean area of the Western Sea, including plentiful calciums, amino acids, docosahexanoic acid(DHA) etc. Addition of they improved chungjung chicken yields and meat quality compared to general chicken given feeds mixed antibiotic etc. Also, chungjung chickens eaten miced type develop resistance to in disease. There were significant trend in crude proteins, calciums, crude lipids contents, and unsaturated fatty acids between the chungjung chicken meats and the general chicken meats. The crude proteins and calciums contents were higher in the chungjung chicken meats than the general chicken meats, but the crude lipids contents were higher in the general chicken meats than that. Also, contents of the n6 fatty acids and n3 fatty acids in chungjung meats were higher than that. Especially, contents of DHA in the chungjung chicken meats were detected higher than the general chicken meats. Therefore, the results from this experiments will provide a information for the nutritional knowledge of the 'white meats', especially the clean chicken meats.

• Journal of Korean Society of Steel Construction
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• v.27 no.2
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• pp.143-153
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• 2015

In this paper, the standard fire resistance test under load and associated numerical study were carried out to evaluate the fire resistance of unprotected partially encased beams and slimfloor beams. The temperature evolution and the deflection increase of the composite beam specimens were investigated and the effects of the key behavioral parameters including the load ratio, the reinforcement, and the fire exposure were analyzed. The test results showed that the temperature rise of the partially encased beams and slimfloor beams is considerably slow compared to the conventional H-shape composite beams. Up to at least 90 minutes, the reinforcements in the partially encased composite beams maintained below the temperature at which the cold steel strength is sustained. Unprotected partially encased beams and slimfloor beams in the experimental program achieved the fire resistance more than 2 hours according to the limiting deflection criteria. This implies that unprotected partially encased beams and slimfloor beams can be very promising alternatives to enhancing the fire resistance of steel beams. This study also conducted the fully coupled thermal-stress analysis by using the commercial code ABAQUS to the thermal and structural behaviour of composite beams in fire. The numerical predictions provide acceptable correlations with the experimental results.

• Journal of Korean Society of Steel Construction
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• v.9 no.4 s.33
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• pp.579-588
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• 1997

During the construction of cable stayed bridge, errors are always caused by various reasons, accumulated and amplified through the complex construction steps. It is likely that the undesirable stress distribution of members and the large deflection of the bridge different from design values come out The adjustment of cables during construction is absolutely indispensable to correct the stress distribution of the members and the geometrical configuration of the bridge. In the conventional method, weight coefficients are used to consider the difference of units between cable forces and girder deflections during the optimization process of cable adjustment. However, it is not easy to determine weight coefficients and the adjustment must be repeated several times with the time consuming process of the determination of new weight coefficients in case that errors are out of design allowable limits. In this paper, fuzzy linear regression analysis is applied to the cable adjustment to overcome those problems. In the application of fuzzy linear regression analysis method the designer's intention and the design allowable limits can be formulated in the form of the constraints of the linear optimization problem. Therefore, the cable adjustment in construction site can be carried out with the fuzzy linear regression analysis more rapidly than with the convetional method.

• Korean Journal of Food Science and Technology
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• v.13 no.2
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• pp.146-152
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• 1981

The proximate compositions, fatty acids, and amino acids of mung bean(Phaseouls aureus) were determind: 1. The proximate compositions of mung bean were 24.80% crude protein, 4.75% crude fiber, 4.75% crude ash, 46.03% carbohydrate and 0.82% fat. 2. Saponification number, iodine number and non-saponifiable content of the lipids extracted from mung bean were 154.99, 117.05 and 14.83% respectively 3. The protein of mung bean was composed of glutamic acid (15.92%) and aspartic acid (12.09%) as major amino acids and considerable amounts of leucine (8.19%), arginine(7.31%) and pheylalanine (6.41%). The essential amino acid content including lysine(8.3%), threonine (3.5%) and tyrosine (2.83%) was higher than those of rice and barley which are deficient in those amino acids. 4. The lipids were composed of 35.5% linoleic acid, 15.5% linolenic acid and palmitic acid, 37% stearic acid, 5% oleic acid as major components, and 0.4% myristic acid, 1.0% arachidonic acid and 1.2% behenic acid as minor components. The saturated and unsaturated fatty acid ratio of oil extracted with di-ethyl ether from mung bean was $42{\sim}43/57{\sim}58%$.

• Korean journal of food and cookery science
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• v.7 no.4
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• pp.63-69
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• 1991

This study was undertaken for the purpose of studying the physicochemical propery of mungbean and texture of mungbean starch gels. Mungbean starch gel made with different levels of oil were tested to investigate the textural characteristics by mechanical test. The results are summerized as fallows: The content of moisture fat, protein, and ash in Seonwha mungbean were shown to be about 13.19%, 1.02%, 23.57% 3.13% respectively. Those of Seonwha mungbean crude starch were 12.48%, 0.63%, 0.94%, 0.13% respectively. The gain of dry crude starch from peeled mungbean was 22.48%. Water binding capacity of Seonwha mungbean crude starch was 183.1%. The pattern of change in swelling power of Seonwha mungbean crude starch for increasing temperature increased slowly to $70^{\circ}C$, and then increased rapidly. The pattern of change in solubility was similar to that of swelling power. The amylose and amylopectin content were 22.5%, 77.5%. Brabender hot-paste viscosities of mungbean crude starch at 8% and 10% showed the similar amylogram patterns with peak vicosity. By the Rheometer measurement result of 8% 10% mungbean starch gel, Hardness and Fractuability tended to be decreased as the addition level of oil increased. Elasticity, Adhesiveness, Chewiness, L, a, and b value tended to be increased as the addition level of oil increased.

• Food Science and Preservation
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• v.14 no.6
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• pp.611-616
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• 2007

This study analyzed the major chemical components of raw and dried persimmons (Diospyros kaki Thunb.). Raw and dried persimmons contained (respectively) 85.52% and 47.36% moisture, 0.10% and 0.13% crude fat, 0.30% and 1.89% crude protein, and 0.56% and 2.0% crude fiber. The main free sugar components in both raw and dried persimmons were glucose and fructose. Seventeen amino acids were identified in the dried persimmons, amongst which the dominant ones were aspartic acid, glutamic acid, histidine and arginine. The total amino acid content of raw and dried persimmons was 3,130.76 ppm and 12,849.33 ppm, respectively. The major fatty acids in total lipids were palmitic acid, palmitoleic acid and linolenic acid in both raw and dried persimmons. The raw persimmons had 23.22% palmitoleic acid and 32.70% linolenic acid, suggesting that they have a high ratio of unsaturated fatty acids. The mineral content of both raw and dried persimmons was Na < Fe < Ca < P < K.

• Journal of the Korean Society of Marine Environment & Safety
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• v.17 no.3
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• pp.219-226
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• 2011

Now Korea Hydrographic and Oceanographic Administration(KHOA) publishes 309 charts of 38 kinds of scale. Korea chart index number system is established with east, south and west sea areas. The chart number has been given irregularly in accordance with publication order so there is no consistence. The present chart index number system can classify sea areas but does not have information of scale, object and location. Therefore this chart's unsystematic management gives rise to inconvenience to the chart user. So, the standards of chart index number system is urgently needed for the efficient management & use of chart. In this paper, we intend to propose new chart index number system through adjusting area of chart and rearranging scale of charts. As a result, it is necessary to change from 3 digits to 4 digits index number to gain competitiveness & systematic management of Korea nautical charts.