• Journal of Energy Engineering
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• v.8 no.2
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• pp.224-232
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• 1999

Latent heat storage system using micro-encapsuled phase change material is effective method for floor heating of house and building. The temperature profile in capsule block and flow rate of hot water are important parameters for the development of heat storage system. In the present study, a mathematical model based on 3-D, non-steady state, Navier-Stokes equations, scalar conservation equations and turbulence model ($\kappa$-$\varepsilon$), is used to predict the temperature profiles in capsule and the velocity vectors in hot water pipe. The multi-block grids and fine grids embedding are used to join the circle in hot water pipe and square in capsule block. The phase change process of the capsule is quite complex not only because the size of phase change material is very small, but also because phase change material is mixed with the cement to form thermal storage block. In calculation, it's assumed that the phenomena of phase change is limited only the thermal properties of phase change material and the change of boundary is not happened in capsule. The purpose of this study is to calculate the temperature profiles in capsule block and velocity vectors in hot water pipe using the numerical calculation. Two kinds of thermal boundary condition were considered, the first (case 1) is the adiabatic condition for the both outside surfaces of the wall, the second (case 2) is the case in which one surface is natural convection with atmosphere and another surface is adaibatic. Calculation results are shown that the temperature profile in capsule block for case 1 is higher than that for case 2 due to less heat loss in adaibatic surface. Specially, in the domain of near Y=0, the difference of temperature is greater in case 1 than in case 2. The detailed experimental data of capsule block on the temperature profile and the thermal properties such as specific heat and coefficient of heat transfer with the various temperature are required to predict more exact phenomena of heat transfer.

• Journal of Internet Computing and Services
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• v.21 no.3
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• pp.71-81
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• 2020

The digital bio-healthcare industry is one of the three major fostering industries of the Korean Moon Jae-In government. The purpose of this study is to compare and analyze the ripple effect and investment effect in digital bio-healthcare industry. Analyzing the ripple effects of the digital bio-healthcare industry is very important to induce policies on industry and technology development. First, the research methods were reclassified into 33 industries in the standard industry classification and rewritten into 35 industry classification tables. Second, various trigger coefficients and ripple effects coefficients were rewritten by the analysis framework of the industrial association table. Third, we compared the ripple effects of related industries in the production, investment, value-added and jobs sectors of the digital bio-healthcare industry. Finally, in terms of investment effects, the effects of in-house and related industries were compared. The result of this study would be helpful in the establishment of industrial policy and technology development policy.

• Journal of Bio-Environment Control
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• v.4 no.2
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• pp.211-222
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• 1995

This experiments were carried out to investigate the growth responses of spinach to temperature controlling by shading treatments at different times during the summer, and the effects of environmental parameters on the growth and yield were evaluated. The fourth cultivation was showed maximum temperature at air temperature of 33.1$^{\circ}C$ and soil temperature of 28.6$^{\circ}C$, followed by third, second, fifth and first cultivation. Among the tested temperature decreasing by shading, shading with silver - coated PE film strips was the most effective in lowering greenhouse air temperatures by showing 1.1$^{\circ}C$ decrease as compared to the outside air temperature and 3.1$^{\circ}C$ decrease as compared to the air temperatures inside the non-shaded PE house and 2.3$^{\circ}C$ decrease as compared to the air temperaturese shading with black- coated PE film strips, the soil temperature was showing 2$^{\circ}C$ decrease in both shading treatments than non-shaded PE and outdoor. In first cultivation, difficult cultivated as compared to others period owing to bolting of spinach. This first period was cultivated used two domestic cultivars and six imported cultivars, significantly better growth and higher yield of spinach were recorded in glory, manchuparuk and sunlighr cultivars. The effectiveness of shading on spinach, as expressed by the crop yield increase, was the highest in the planting from July 1 to August 24.

• Journal of Fashion Business
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• v.2 no.2
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• pp.85-96
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• 1998

This is a study on the revitalization of the fashion design studios (planning and production companies of clothing) in compliance with the request from the Small and Medium Business Administration. It's purpose is to strengthen the competence of the petty company and eventually frourish the Korean Fashion Business. The research method to conduct this study consists of two parts. First part is the research on the domestic industry mainly by questionaire, interviews and literature reviews. After making out the directory of the design studios (total of 700), 85 studios were selected for the questionaire. And by interviewing them, data with more depth was obtained. The second part is the research of the foreign cases. In the case of Japan, survey was done on the spot. However, in the case of Italy, literature review and interview with specialists were made. Also in order to higher the efficiency of the study an advisory committee and final explanatory meeting was carried into effect. This study has started first by looking into the significance and function of the fashion design studios. Then, a full scale examination was made centering around the questionarie of the present conditions of the companies. General conditions were first observed. Then the survey was done by grouping the industry by the industrial classifications such as woven, knit, leather mustang fur and fashion accesaries. The problems these companies face are that they are petty in scale and in lack of speciality, professional training, government support. Also, they are without an association or an organization that speaks for them and they face problems while doing business with others. Cases of Japan and Italy were surveyed as the example of the advanced nations. In the case of Japan, development of planning and management company, Fashion Soft House, was analyzed. Italy for instance, the function of the studios was looked into centering around the silk complex, Como, knit product complex, Capri. Also, precedent cases of brands and developing factor of the fashion industry was examined. Finally, on the basis of the result of the study, a plan to revitalize the fashion design studios was presented centering around the strategic planning, management, production, developing of talent, improvement of relationship between business acqaintance, and the support policy of the government.

• Journal of Plant Biotechnology
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• v.35 no.2
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• pp.147-153
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• 2008

Cry1Ac gene was introduced into chrysanthemum (Dendranthema grandiflorum Kitamura) 'Linneker Salmon' through Agrobacterium-mediated gene transformation to develop new lines showing resistance to tobacco cutworm (Spodoptera litura). Cry1Ac gene was transferred into chrysanthemum by Agrobacterium C58C1 containing pCAMBIA2301. After infection of Agrobacterium C58C1 with leaf segments, the segments were cultured on regeneration medium (MS + 1.0 mg/L BA + 0.5 mg/L IAA) containing 10 mg/L kanamycin for the first selection, on the same medium containing 20 mg/L kanamycin for the second selection, and on rooting medium (MS basal medium) containing 20 mg/L kanamycin for the third selection. Until the third selection, sixty nine plantlets (1.6%) were survived and rooted. Thirty six ones (0.8%) among them were confirmed as putative transformants with nptll gene by nptll primer PCR, and 35 (0.8%) of 36 ones as transformants with nptll gene and cry1Ac gene by Southern analysis. The gene transformation efficiency of cry1Ac gene was favorable with 0.8%. The resistance of tobacco cutworm (Spodoptera litura) in chrysan-themum transformant introduced cry1Ac gene was tested in green house. Three transformants were confirmed to have resistance to tobacco cutworm.

• Proceedings of the KSAR Conference
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• 2003.06a
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• pp.67-67
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• 2003

Early development of porcine oocytes fertilized in vitro was examined in different culture conditions. Porcine ovaries were collected from local slaughter-house. Cumulus-oocytes complexes were aspirated from 2 to 6 mm follicles. The collected oocytes were cultured for in vitro maturation in NCSU-23 medium with 5 mM hypotaurine, 0.57 mM cystein, 10% porcine follicle fluid, 10 IU/ml PMSG and 10 IU/ml hCG for 42~44 hrs. The frozen-thawed spermatozoa were washed by centrifigation 2 times at 1, 500 rpm in D-PBS with 5.56 mM glucose, 0.33 mM Na-pyruvate, 100 IU/ml penicillin, 1$\mu\textrm{g}$/ml streptomycin and 1ng/ml BSA. The fertilization medium used mTBM with 2 mM caffeine and 2 mg/ml BSA and adjusted to a pH of 7.2 to 7.4. The final concentration of spermatozoa was adjusted to 2.5$\times$10$^{6}$ cells/ml motile sperm during fertilization in vitro. At 8hrs h after insemination, the oocytes were transferred into NCSU-23 medium with 5.0 mM hypotaurine and 4 mg/ml BSA and cultured for 7 days. In first experiment, the mean numbers of oocytes collected from 20 ovaries were 674.4 oocytes, and 4.1(27.6), 12.5(84.0), 25.4(171.6) and 57.9%(390.8) for A, B, C and D grade in morphological classification. In the second experiment, when culture medium was supplemented with various concentrations of EGF, the proportions of oocytes cleaved were 56.9, 55.7, 61.9 and 54.7% for 0, 5, 10 and 20ng/ml EGF. The higher proportions(15.1%) of oocytes developed to morular stage were obtained at concentration of 10ng/ml than 0 and 5ng/ml EGF (P<0.05). However, the proportions of embryos developed to blastocyst stage were not significantly different among concentrations of EGF. In another experiment, when the medium supplemented with catalase was used, the proportions of oocytes cleaved were higher in the concentration of 0 unit (56.5%, 61/108) than 100 and 1, 000 unit/ml of catalase (P<0.05). Although the developmental capacity of embryos was improved by medium with 0 unit/ml compared with 100, 500 and 1, 000 units/ml of catalase in oocytes developed to morula and blastocyst stages, were not significantly different among concentrations of catalase.

• Asian-Australasian Journal of Animal Sciences
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• v.12 no.8
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• pp.1292-1297
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• 1999

A preference test on feed and nutrient intakes were conducted on four male ($1.25{\pm}0.08kg$) and four female ($1.21{\pm}0.15kg$) lesser mouse deer (Tragulus javanicus) in captivity. Each animal was kept in individual cages placed in a well-ventilated animal house. The experiment was conducted in two weeks, where the first week was for adaptation to the feeds and the second week for measurements of nutrient intake, nutrient digestibility and nitrogen balance. The feeds offered were kangkong (Ipomoea aquatica), long bean (Vigna sinensis) and french bean (Phaseolus vulgaris) as roughages and proteinaceous feeds; sweet potato (Ipomoea batatas) and carrot (Daucus carota) as carbohydrate-rich feeds; and commercial rabbit pellet (0.3 cm diameter and 0.5 cm long) as a complete feed. The dry matter (DM) content of each feed in the order mentioned above was 7.1, 6.1, 3.9, 18.5, 6.2 and 87.6%, respectively. Long bean had the highest protein (CP) content (29.7%), while sweet potato had the lowest (6.2%). The CP contents of other feeds were within the range of 14.2 - 25.1%. Among the feeds, carrot had the lowest energy content (3.83 kcal/g) and long bean the highest (4.67 kcal/g). When fresh weight of the feed was considered, the male mouse deer consumed sweet potato the most ($86.3{\pm}12.90g/d$), but the female had a high preference for carrot ($79.2{\pm}9.76g/d$). The other feeds were consumed in lesser amounts. However, in terms of DM of the feed, the amount of commercial pellet consumed was the highest for both male ($45.0{\pm}5.10%$) and female ($44.7{\pm}7.38%$) mouse deer, followed by sweet potato ($33.1{\pm}4.43%$ and $22.4{\pm}7.73%$ for male and female, respectively). Significant (p<0.05) differences in DM, organic matter (OM) and gross energy (GE) intakes were observed between male and female mouse deer. The male consumed higher amount of DM, OM and GE than the female. The total DM intake was $40.7{\pm}2.24g/d/kg$ $W^{0.75}$ for male and $35.9{\pm}1.72g/d/kg$ $W^{0.75}$ for female mouse deer. Percentage digestibilities of DM, OM, CP and GE were within 72.7~80.8% and were not significantly different between male and female mouse deer. However, male mouse deer had significantly (p<0.05) higher digestible DM, OM and GE intakes than the female. Both male and female mouse deer were in positive nitrogen balance (0.6 g N/d/kg $W^{0.75}$). The male mouse deer gained $7.6{\pm}3.45g/d$, while the female gained $4.3{\pm}2.40g/d$.

• The Korean Nurse
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• v.36 no.4
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• pp.61-74
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• 1997

This study is a descriptive study which was done to examine the circumstances surrounding burn accidents in children in order to develop a burn prevention program. The subjects for the study were the mothers of 107 children admitted to two burn specialty hospitals in seoul and the mothers of 172 healthy children attending day care or kindergarten. The tool used in the study was developed by the researchers, pretested and refined. Cronbach's alpha was 0.72. Data collection was done between November 1995 and April 1996. Statistically analysis was done using SAS Version 6.04 and the data was analyzed using test, chi square, regression and logistic analysis. A suumary of the results shows the following : Eighty percent of the children in both groups lived in nuclear families but comparatively more of the children with burn accidents lived in apartments. More of the parents in the group of healthy children had university education and held white collar or professional jobs, while the parents of the children with burn accidents were slightly younger than the parents of the healthy children. but not significantly younger. A significantly greater number of families of children with burn accidents had more than one child and the characteristics of the children with burn accidents that they were more frequently boys, either first or last born and very active. Most of the burn accidents occurred in fall or winter. sometime between noon and midnight and the majority occurred in the home and were caused by hot liquid. In 86% of the cases emergency care was not given at home but the child was brought to the hospital emergency unit. Most of the burns were second degree or greater. involved the arms or legs. required admission, and 41.5% occurred when the parents were preparing or eating meals. In a test of knowledge of preventive measures, the mothers of children who had suffered burn accidents scored slightly higher than the mothers who had no experience with burn accidents, but this was not statistically significant. As to what to do in the case of a fire, the mothers of the healthy children had more knowledge about who to notify. but 70% of the mothers in both groups did not know how to escape from the house if it was of fire. 80 to 96% did not know what do to in case of a fire, such as rolling if clothes were on fire. 80% did not know what emergency care to give for a burn, and 74 to 87% did not know when it is appropriate to try to put out a fire. It can be concluded from this study that. since the results show that the most frequent situation which resulted in burn accidents was when the parents were not aware of the danger of burns or were not paying attention to the child. and when there were no protective devices to prevent burns. and that accidents most frequently occurred at home. the most effective way of preventing accidents is to develop in the parents a "safety mind", Since burn accidents in children are usually more severe than in adults. the physical. emotional. psychological and social damage is greater. In order to develop and awareness of this in the general public. the use of mass media. books and pamphlets and other educational media that provide education on prevention of burn accidents need to be utilized.

• Journal of the Korean Institute of Traditional Landscape Architecture
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• v.34 no.1
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• pp.1-17
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• 2016

The purpose of this paper is to understand the value of Dongji(東池), Seoji(西池) and Namji(南池), the lotus ponds of Fortress Wall of Seoul as part of the cultural landscape of the period through a consideration of personal behavior and impressive landscape characteristics via various old writings on each pond. The objects of this study include poems, diaries, travelogues and essays describing these ponds. The results are as follows. First, the preferred landscape elements of these three ponds were lotuses, willows and water itself. Second, while Dongji was recognized as a natural landscape, the composition of Seoji was a mixture of with natural and urban landscapes, and Namji was more urban altogether. Third, in aspects of personal behavior, while Dongji was a place where people broke their journeys to gaze at the scenery or looked down distantly, in Seoji, people stayed for a long time in a pavilion called Cheonyeon-jeong(天然亭) and engaged in various leisure activities, and in Namji, there were many gatherings under a temporary shelter or at a friend's house near the pond. Night was the best time to enjoy Namji because during the day, the area was crowded with people, horses, carts and so on. Fourth, the landscapes of fortress walls were impressively described often. Fifth, because these ponds were integrated into the surrounding area, they were like public openspaces mixed with water spaces, natural environment and adjacent facilities. The lotus ponds of the Fortress Wall of Seoul were located in a place connecting inside and outside of fortress, supplemented the cultural features in city, were valued as public openspace, and made it possible to experience the unique landscape of Hanyang. Although these ponds were buried and have now disappeared, they still hold great cultural meaning and potential value as water landscapes of the old city.

• Korean Journal of Veterinary Service
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• v.21 no.2
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• pp.157-161
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• 1998

To get the information of sanitary develoment of beef and pork, we get the result of environmental specimens(slaughter house floors, sewage, etc) in laboratory. 1. After examination of bacterial infection on after-bleeding, after-dismemberment and final products at each stage of cattle slaughter process, we got log 3.80~7.48cfu/$\textrm{cm}^2$ of aerobic plate counts and log 2.60~5.23cfu/$\textrm{cm}^2$ of coliform counts or so from the carcasses after bleeding, but these count levels went down little bit after dismemberment but as we continued study to the final products, the count levels kept sililar in mumbers. 2. At the slaughter process of pigs, the aerobic plate counts and the coliform counts reached such high levels of log 5.59~8.80cfu/$\textrm{cm}^2$ and log 3.31~5.67cfu/$\textrm{cm}^2$, respectively, after bleeding, in general, these count diminished in a big way after scalding, but they increased just little bit from dismemberment to final products. And there were few differences in the contamination levels on the final products no matter what seasonal contaminations after bleeding. 3. Test revealed very low levels of cell counts both on the aerobic plate counts of washing water and in the coliform counts, the former was log 1.00~2.69cfu/$\textrm{cm}^2$ and the later was log 3.30~5.67cfu/$\textrm{cm}^2$, but the contamination levels on the beds of transfering vehicles for carcasses were very high as followes : the aerobic counts was log 4.23~7.20cfu/$\textrm{cm}^2$ and coliform counts was log 2.86~5.20cfu/$\textrm{cm}^2$. 4. Study showed the aeroboc plate counts and the coliform counts get to the highest levels in summer, the second highest one is in fall, the third in spring, lowest in winter. Resulting from the test results proven above we reached this kind of conclusion the bacterial contaminations on eatable carcasses were upto hygienic treatment of carcasses and cleaniness of transfering vehicles at the final stop of slaughter processes rather than upto at any stage of slaughter processes. Therefore we have got to establish alternatives immediately to develo sanitary quality of meat and pork.