• 한국동물위생학회지
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• 제28권3호
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• pp.225-234
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• 2005

Egg has been considered as one of the most important food sources in both nutritionally and economically. However, because the hazards of egg flow chains' complexity from producers to consumers and the insufficiency of cold chain systems in Korea are still remained, preventive measures for egg safety should be established. This experiment was carried out to investigate the changes of egg qualify during storage in order to find out the proper storage condition and eggshell treatment. Eggs were stored at cold condition $(5^{\circ}C,\;relative\;humidity;\;RH:\;65\pm3\%)$ and room Condition $(1st: Sep\; 6\~Nov\; 15,\;2001,\; 10\~30^{\circ}C,\;RH\;41\~86\%,\;2nd;\; Dec\;13,\;2001\~Feb\;21,\;2002,\;4\~23^{\circ}C,\;RH\;36\~89\%)$ after eggshell treatment (unwashed, washed and coated egg) during'10 weeks and examined weight loss and interior quality periodically. Weight loss was in decreasing order room washed > room unwashed > cold washed > cold unwashed > room coated > cold coated egg. And, Haugh unit was decreasing order room washed > room unwashed > room coated > cold washed > cold unwashed > cold coated egg. Our findings show that both coated eggs and refrigeration reduces the rate of decline in Haugh units and egg weight. And, washed eggs had lower average Haugh units and a higher weight loss than any of the eggshell treatment in both storage conditions. Conclusively, for washing eggshell, 150 ppm of sodium hypochlorite, regular exchange and temperature control of water should be consistent and also eggs should be dried immediately after washing. Also, national guidelines for temperature and moisture of storage places, transportation and expiration data should be established to keep quality and weight loss of eggs. Storage temperature that is a critical factor in the quality and safety of eggs should be kept under 12'c and labelling of expiration date should be obligatory.

• 보건교육건강증진학회지
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• 제19권1호
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• pp.109-132
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• 2002

The study surveyed 1,127 mothers whose children aged 3 to 5 went to 25 randomly selected kindergartens, which were located in Busan Metropolitan City and the adjacent Gimhae City, and analyzed the preventive health behaviors on their children and the condition of home health education on their children. As the compulsory kindergarten education will e to be implemented within 4 years, this study aimed to draw up the rudimentary material for health education at kindergartens. The study results are summed up as follows: 1. Mothers' awareness of health-related attitude and behavioral level for their children at kindergarten: 1) The general health condition of the children, which mothers are aware of, was that they were healthy on the whole. As their children becomes older, the income level of the parents is lower, and mothers have lower level of educational standard, the health condition of the children was found a little lower. 2) In terms of mothers' recognition of the practice level of preventive health behaviors, the items such as going to bed regularly, washing hands and feet well, and having meals regularly were high in the practice level, while exercise and tooth-brushing were not practiced well. 2. The condition of mothers' health education of their children: 1) It was found that washing hands and feet, restriction of overeating and preference for specific kinds of food, guidance on regular sleep and regular meal were practiced well among items of home health education targeting kindergarten children. 2) Mothers have obtained information on family health from printed matter such as newspaper or magazine rather than the visual media. 3) From the cross analysis of mothers' health education on children and children's health behaviors, as the standard of education of mothers was higher, so was the level of preventive health behaviors of children. 3. From the result of multi regression analysis of the factors influencing the preventive hygiene of kindergarten children, it was found that as the home health education level was higher, so was the health behavior of children. On the other hand, as the mothers were older, the health behavior of children became lower.

• 한국염색가공학회지
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• 제23권4호
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• pp.257-262
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• 2011

The dish cloth requires antimicrobial activity for hygienic purpose. Until now, organic antimicrobial agents of low cost have been frequently used for the anitimicrobial finishing. However, a cleaner hving anitimicroial activity should be more durable considering consumers' ever-increasing expectation. In this study, the cleaner containing the bamboo fiber were finished with a formulation of a new zirconium-containing inorganic agent of zirconium phosphate and polyurethane binders. The optimum treatment condition was investigated. And its durability against repeated laundering cycles was assessed. The existence of Zr after the repeated laundering was verified and the antimicrobial effect did not decrease under 30 washing cycles.

• 한국염색가공학회지
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• 제26권3호
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• pp.254-262
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• 2014

In this study, the colorants of Wisteria floribunda leaf were extracted with water. Silk and wool fabrics have been dyed with the aqueous extract of Wisteria floribunda leaf and their dyeabilities was studied. Additionally the fastness to washing, drycleaning, light and perspiration were also investigated. Silk and wool fabrics dyed with the extract of Wisteria floribunda leaf were colored in yellowish red tint. The optimum dyeing condition of the colorants extracted from Wisteria floribunda leaf was three repeated dyeing at 70, $95^{\circ}C$ for 1hr using post mordanting. For dyed silk and wool fabrics, the fastness to washing was improved by mordanting, and the fastness to drycleaning was very outstanding.

• The International Journal of Costume Culture
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• 제2권1호
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• pp.54-61
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• 1999

The purpose of this research was first to analyse and compare the types of microbes inherent among the unwashed and washed Kupori textiles, and second to investigate whether there is a difference between unwashed and washed Kupori textiles on the susceptibility of contamination by microorganism when exposed to the same microbial environment. Microbial identification procedure and the Shake Flask Test for investigating the effect of exposure to microbial environment were carried out separately. The result of microbial identification procedure indicated that a variety of bacteria and fungi were inherent in both unwashed and washed textiles and that the population of contaminated microorganism became more diverse after washing. The result of Shake Flask Test indicated that given the same exposure condition, the unwashed textiles tend to be more susceptible to bacterial contamination than the washed textiles. The results of the present study supported the current conservation procedures adopted in Korean museums which include washing and humigation procedures before long-term storage or display of exhumed textiles.

• 대한가정학회지
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• 제41권7호
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• pp.13-24
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• 2003

Recently there has been interested in the use of natural dyes in textile applications. Generally natural dyes can exhibit better biodegradability and have a higher compatibility with the environment. In this study, cotton, wool and silk fabrics were dyed with alkali extract of Arecae semen using various mordants, and their dyeabilities were discussed. Additionally the fastness to washing, perspiration, light, rubbing, and drycleaning and UV-B protection rate were also investigated. Cotton, silk and wool fabrics dyed with alkali extract of Arecae semen were colored in reddish yellow tint. The optimum dyeing condition of the colorants extracted from the Alecae semen was three repeated dyeing at $95^{\circ}C$ for 1.5 hrs. The dyed fabrics by using mordanting methods improved the fastness to washing, perspiration and drycleaning, but the fastness to light and rubbing were not increased. The UV-B protection rate of the wool fabrics were increased by dyeing with extract of Arecae semen.

• 조명전기설비학회논문지
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• 제29권10호
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• pp.47-53
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• 2015

IPMSM(Insert Permanent Magnet Synchronous Motor) is a very high degree of freedom in the design according to the permanent magnet insertion position. And the performance of IPMSM is affected a lot on barrier shape which determines the magnetic flux path from magnet. Thus the position of permanent magnet and the barrier shape has to be designed by considering both specification and operation condition. In the paper, the permanent magnet and barrier shape which is suitable for direct drive motor of washing machine has been studied. In addition, in order to verify the validity of the study, the test was evaluated by making a prototype motor.

• 한국염색가공학회지
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• 제35권1호
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• pp.1-7
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• 2023

In this study, the influence of pre-treatment(bleaching, mercerization by liquid ammonia and caustic soda) on cotton fabrics were investigated on dyeing Rubia cordifolia extracts. Aluminium Sulfate, Iron(Ⅱ) Sulfate Heptahydrate, Copper(Ⅱ) Sulfate Pentahydrate, Tin(Ⅱ) Sulfate, Manganese(Ⅱ) Chloride Tetrahydrate were used as mordanting agents. K/S value and washing fastnesses of the dyed cotton fabrics pretreated under different conditions were investigated. The K/S values were increased in the order of bleaching, liquid ammonia and mercerization pre-treatment. It was found that the pre-treatment conditions did not significantly affect the color change. The colorfastness to washing of most of all dyed fabrics were over grade 4 regardless of pre-treatment condition.

• 한국의류학회지
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• 제2권1호
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• pp.125-131
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• 1978

This study was intended to clarify (1) the release of free formaldehyde (2) transfer of free formaldehyde to the contacted fabrics during storing, and (3) the removal effect of free formaldehyde by washing from resin finished fabrics. The results of this study were as follow; 1. The decrease rate of free formaldehyde content in fabrics was higher during storing in open air, poly bag, and glass tube in descending order and the content of free formaldehyde in fabrics was decreased in glyoxal resin finished but, increased in Melamine M-3 resin finished when the fabrics was stored in polybag and in glass tube. 2. Increased amount of formaldehyde transfer to contacted fabrics was noted with Melamine M-3 resin finished than that of glyoxal resin finished. Increased amount of formaldehyde transfer as well as more free formaldehyde were noted in cotton fabrics than in polyester/ cotton blend. 3. The effect of removing free formaldehyde from the fabrics was better in case of solid alkaline soap, synthetic alkaline powdered detergents, neutral detergents in descending order. The romoval of free formaldehyde was marked after the 1st washing and almost no increase in free formaldehyde was found after three times of washing. 4. After first washing, the content of formaldehyde in Melamine M-3 resin finished fabrics increased more rapidly than that of glyoxal resin finished fabrics in condition of closed storing.

• 방사성폐기물학회지
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• 제13권1호
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• pp.35-43
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• 2015

선행핵연료 주기관련 시설의 해체/복원 시 방사능으로 오염된 다량의 자갈폐기물이 발생할 수 있다. 하지만 현재 방사성 오염 자갈을 제염하기 위한 기초자료가 부족하므로, 본 연구에서는 토양세척법을 응용하여 방사능 오염 자갈을 제염하는데 필요한 기초실험을 수행하였다. 효율적인 제염을 위하여 제염제를 비교하여 선정하였는데, 우라늄으로 오염된 자갈의 제염제로는 증류수나 계면활성제보다 0.1 M의 질산을 사용하였을 때 제염이 잘 되었다. 또한, 제염효율을 높이고 제염시간을 단축하기 위하여 우라늄 오염 자갈을 파쇄/분쇄한 후 세척한 결과, 입자의 크기가 작으면 작을수록 제염효율이 높고 자체처분허용농도를 만족하는 것으로 나타났다.