• 상하수도학회지
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• 제25권6호
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• pp.923-933
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• 2011

In this study, we derived seven customer value factors to evaluate the levels of service in wastewater utilities required by customers. Levels of service according to the customer value were categorized into environmental amenity, accessibility of wastewater service, affordability of wastewater charge, quality of wastewater service, health and safety of wastewater service provision, reliability and responsiveness of wastewater service provision, and satisfaction of customer service. To investigate the levels of wastewater service, questionnaires were prepared according to the customer value factors, and the questionnaire survey was performed with 800 adults in all over Korea including male and female samples. The comprehensive satisfaction score for the wastewater service was 57.5 points, indicating a slightly good satisfaction level. The detailed analysis of the result showed that the satisfaction level was high in the wastewater service accessibility and call center service provision but it was relatively low in the river water quality and nasty smell of wastewater. It was concluded that the quality of wastewater service and customer service satisfaction need to be elevated primarily in order to improve levels of wastewater service required by the customers.

• 한국식생활문화학회지
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• 제35권1호
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• pp.86-96
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• 2020

This study analyzed the dietary behaviors and adaptation for Korean foods among Central Asian workers(Mongolia, Kazakhstan, Uzbekistan, Kyrgyzstan) living in South Korea to provide basic and fundamental data that allows Central Asian workers to have desirable eating habits while living in South Korea. Questionnaires were completed by 186 Central Asian workers living in South Korea. From this study, we found that 56.8% of respondents ate three meals a day, and 27.2% of respondents ate two meals a day. 29.7% of respondents had no snacks. For adapting Korean food, Mongolia, Uzbekistan, Kyrgyzstan workers had difficulties adapting spicy and salty flavors and unpleasant smell while Kazakhstan workers had difficulties due to sweet flavors and spicy and salty flavors. Men adapted better than women to adapt Korean food. Women respondents ate Korean food more often than men. And the Uzbekistan ratio of eating homeland food daily was the highest. By providing understanding of dietary patterns of Central Asian workers, these results can be used as the basic and fundamental data for their Korean food adaptation.

• 한국식품조리과학회지
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• 제20권3호
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• pp.271-278
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• 2004

As an attempt to develop new functional beverages for breakfast, sweet potato based beverages were prepared with hydrolyzed sweet potato, potato, and carrot products (sample : water = 1 : 1), and their chemical and sensory properties were evaluated. The content of reducing sugar and soluble solid of the sweet potato, potato, and carrot increased with enzyme treatment, while their viscosity decreased without significant change of color. The hunter color test showed that the beverages with 10％ carrot content were high in redness leading to a decrease in their acceptability for sensory evaluation. The sensory score of the mixture containing 5％ carrot was good, but beverage with 0％ carrot reduced the sensory properties. The results showed that the final ratio of sweet potato to potato to carrot for the new functional beverage was 5 : 4.5 : 0.5. The pH of the beverage was adjusted to 5.0, 4.5, and 4.0 using an organic acid mixture. In the sensory test of the new functional beverage, the best sensory score(color, taste, smell, and texture) was the mixture of sweet potato : potato : carrot equaling 5 : 4.5 : 0.5 with a pH of 4.5.

• 한국전자통신학회논문지
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• 제3권4호
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• pp.233-239
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• 2008

본 연구는 시각과 청각을 자극하여 자가 면역 효과를 극대화하여 자가 치유 능력이 가능하도록 지원해 주는 시스템 구현에 관한 연구이다. 유사한 연구 중 후각을 자극하는 방법으로 향기를 이용하여 행동, 감정, 정신들을 지배하는 뇌가 여러 모의 정신적인 불균형을 바로 잡아주는 것이 가능함을 인정하고 있듯이, 본 연구는 시각과 청각을 통하여 이용자로 하여금 가상현실에서 사용자를 표시 창에 표시하여 정신과 감정들을 뇌로 하여금 제어하는 과정을 통해 원활하게 기(氣)와 혈(穴)의 흐름을 유도함과 동시에 면역 효과에 가장 이로운 호르몬을 생성하게 하는 시스템에 관한 연구와 타당성을 연구해 보고자 본 시스템을 개발하고 사용 전 후 의 대상자의 알파파를 중심으로 변화 및 영향을 알아보고자 하였다.

• 보건교육건강증진학회지
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• 제6권2호
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• pp.66-75
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• 1989

About smoking and health control by theorize of common with various records investigation prevent an injury from smoking Further, should be contribute for the national health improvement for application of guide to health education. The results of investigation are as follows; 1) Tobacco be transmitted the first year of KwangHea's(reign) from GeeRu(the year of GeeRu), before sixth year of KwangHea's GapIn. 2) By reason of smoking an extreme poison ingerdients is Nicotine, Co, Tar etc three kinds. 3) The number of chemicalcompound in the tobacco smoking. Nicotine play an important part of it makes continue to smoking act. 4) Co, Not only injury vascular in the cell wall but also influence in ardiac muscular tissue. 5) Tar, is play an important part tl determine taste of tobacco or fragrace(a sweet smell). 6) Be demaged in the body with harmful objects of tobacco is first lung cancer, next heart disease, and chronic lung disease etc. 7) Passive smoke(indirect smoke)is first smoker's when have smoking and blow smoke from cigarette take smoking. On second when take smoking as it is burning cagar to end. 8) Female smoker are no good and bring many trouble to the mother's body and fetal body(an unborn child). 9) Nicotine also, like drug and alcohol break out reliance, introspection, poisonous or obstinence syndrome 10) A counterplan about smoke should be settlement with propriety control of smoking and an antismoking(non-smoker).

• 한국안전학회지
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• 제32권2호
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• pp.1-6
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• 2017

Modern society has been experiencing by population growth and urbanization that bring, a change of eating habits which has occurred a various types of waste in a large amount. Even though these wastes are required an immediate treatment with difficulties unsanitary handling and existing waste treatment method are by incineration, fermentation, drying and etc. however a bad smell occurs after the treatment that need's a lot of energy in processing organic wastes with high moisture contents and wasteful and inefficient problem. The strength assessment of the organic waste agitating vessel is required in terms of safety due to the differences of loading on the shaft that was treated by agitating the mixture of food waste. The damage of agitating axis is depended on steam pressure, temperature condition and the force moment that exerted by the food waste. Thus the strength assessment and stability evaluation are very important, especially to handle a hard waste. In this study the rotation capacity of agitation is about 5 tons considering general structural rolled steel pressure vessel strength and steam pressure. The purpose is to estimate the safety and strength evaluation for a agitator axis and impellers according to the rotating angle of the axis under the condition of the 3.2 ton capacity reactor.

• 한국전산유체공학회:학술대회논문집
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• 한국전산유체공학회 2008년도 춘계학술대회논문집
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• pp.534-537
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• 2008

Growing attention has been given to sterilizing and antibacterial effects of nano-silver, recently. Nano-silver solution can be applied to the heat exchanger in an air conditioner to prevent bad smell or bacteria. The present study is directed at the nozzle spray characteristics over a heat exchanger. This problem is of particular interest in the design of a nano-silver HVAC system. The effects of nozzle position and flow rate on the spray area over a horizontal surface have been investigated for various nozzles. The results obtained indicate that spray area is increased as the height of spray position is increased or mass flow rate is increased. The wetted area over a practical heat exchanger is also studied at a given nozzle height. It is found that the wetted area is gradually increased with an increase in the flow rate. However, the effect of flow rate on the wetted area is a little affected by flow rate in the range of too much flow rate. It is also found that the wetted area is decreased as the inclination angle of a heat exchanger is increased.

• Asian-Australasian Journal of Animal Sciences
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• 제9권2호
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• pp.181-187
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• 1996

About 8 million tons of straw (dry matter) become rotten during the monsoon(June to August) season in Bangladesh. The possibility of preserving straw with urea, under wet condition during dry period (December to May) and its utilization by cattle has been studied. Five tons of fresh and wet(600g DM/kg material) rice straw were preserved for six months, with 5% urea(W/W) in either dome or rectangular shaped heap without any polythene cover. The preservation quality, acceptability and nutritive value of preserved straw were then comparted with that of dry straw in growing cattle. In both types of heaps, straw was excellently preserved having strong ammonia smell,dark brown in colour with no fungal infestation. Urea preservation of straw increased its CP and ADF content. Preserved straw was readily accepted by the animals and they were healthy throughout the experimental period. Compared to dry straw, urea preserved straw had nonsignificantly higher rumen degradability, straw intgake and growth rate. Similarly, digestibilities of DM(p<0.01), OM(p<0.01) & ADF(p<0.01) were significantly higher in the preserved than the dry straw. It was concluded that wet straw with relatively lower moisture(400 to 500 g/kg straw) content can be readily preserved by using urea without being covered with polythene. Whether the same phenomenon occurs in the preservation of fresh and weet rice straw with relatively higher moisture(600 to 700 g/kg straw) content is yet to be determined.

• 복식
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• 제54권6호
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• pp.91-100
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• 2004

The purpose of this study is to evaluate the influence of T-shirt as a movie costume on the modem mass fashion. The way of study is to analyze the changes of men's image with T-shirt as Hollywood actors costume in 50's and 60's. The costumes create the characters with meanings and symbols moreover they lead fashion as well as promoting artistic value of films. At the end of the 19th century, this shirt learnt the ropes in the U.S. Navy well before it won the hearts of sportsmen and workers alike, with its twin virtues of comforts and hygiene. When American soldiers returned home after World War II showing their T-shirts in the sweltering heat of the Tropics, their shirts were as heroic as they were. Furthermore the new stars of Hollywood, going by such names as Marlon Brando and James Dean, gave the T-shirt its rebel cachet and showed the whole world. Be it tom open on Marlon Brando's torso in Elia Kazan's 'A Streetcar Named Desire', or peeping out dazzlingly white from under James Dean's red jacket in 'Rebel Without a Cause', the T-shirt flaunted its sexuality and emanated the sweet smell or revolt. It would be the banner of rebellion for a whole generation. The T-shirt had finally found its way into the history of fashion and was there to stay.d was there to stay.

• KSBB Journal
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• 제24권5호
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• pp.420-424
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• 2009

악취방지법의 시행으로 악취의 규제가 강화됨에 따라 축산 시설에서 발생하는 악취의 주요 원인 물질인 암모니아와 황화수소를 신속하고 간단한 방법으로 검지할 수 있는 방법으로 화학적 방법을 이용한 가스 검지관을 개발하였다. 악취물질의 농도를 변색길리를 통하여 알 수 있도록 발색반응 메카니즘을 규명하고 이를 정량화 하여 유리관에 충전하여 암모니아와 황화수소 검지관을 제작하였다. 암모니아 검지관은 선형성 및 재현성 평가에서 99.6%의 선형성을 나타내었으며, 검지환경에 따라서 민감한 경향을 나타내었으나, 암모니아 가스에 대한 동일한 경향성을 나타내었다. 또한 황화수소 검지관은 99.7%의 선형성을 나타내었으며, 동일한 시료를 이용한 반복 평가에서 95% 이상의 재현성을 나타내었다.