• 한국환경과학회지
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• 제16권11호
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• pp.1225-1230
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• 2007

The emissions characteristics of particulate matters(PM) according to the types of wastes from industrial waste incinerator of 800 kg/hr treatment capacity were investigated. For this study, the incinerate waste are as follows; waste resin, waste wood, waste urethane, waste gunny, and waste paper. The particulate samples were collected to be emitted in stack and air pollution control(both cyclone and bag filter). In stack, the concentrations of PM were in the range of 2.61 to $26.51 mg/Sm^3$ and the major chemical species were C, Si, Cl, K, Na, Ca in all the wastes. In cyclone fly ash, the mean content of heavy metal were in the order of Fe > Zn > Pb > Cu > Mn > Cr > Ni > Cd > As > Hg and the heavy metal content of waste resin were Zn 34,197.5 mg/kg, Fe 27,587.6 mg/kg, Pb 6,055.8 mg/kg, respectively. In bag filter fly ash, the mean content of heavy metal were in the order of Zn > Pb > Fe > Cu > Mn > Cd > Cr > Ni > As > Hg and the heavy metal content of waste wood were Pb 36,405.2 mg/kg, Fe 15,762.9 mg/kg, Cu 9,989.5 mg/kg, Cd 2,230.1 mg/kg, respectively. Comparing the heavy metal content of both cyclone and bag filter, in cyclone, the Cr, Fe, Ni content were higher than in bag filter and the Cd, Cu, Hg content were lower than in bag filter.

• 산업경영시스템학회지
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• 제12권20호
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• pp.1-24
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• 1989

This paper takes aim at the reliability evaluation by application of Fault Tree Analysis and its computerization. FTA is one of the methods for evaluation of system reliability and safety analysis. The important characteristic of this paper is that computer program is written in the package program(dBaseIII+) by 16Bit/AT personal computer. The program consists of three program segments. (1) The minimal cut sets of the system fault tree are obtained by means of "Fault tree reduction algorithm" (2) The minimal path sets are obtained by inversion of the minimal cut sets determined from fault tree (3) The importance of the basic events which are presented in the minimal cut sets is obtained by means of structural importance analysis. In this paper, a Fault Tree Analysis is applied to a BAG FILTER which is a kind of dust collector.collector.

• 한국버섯학회지
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• 제8권1호
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• pp.11-15
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• 2010

느타리버섯 재배시 현재 톱밥병종균을 대체할 수 있는 저비용 우량봉지제조기술을 개발하기위해 시험을 수행한 결과는 다음과 같다. 1. 재료의 산도 (pH)는 포플러톱밥이 pH 6.7, 미강은 pH 6.4에 비하여 비트펄프는 pH 4.9로 다른 배지재료에 비하여 산성을 나타내었다. T-C는 포플러톱밥 57.5%, 면실피 54.5%, 미강 52.4%로 나타났고, T-N는 포플러톱밥이 0.1%로 면실피 1.77%, 미강 0.94%로 나타났다. 2. 균사생장정도는 신농73호 2.5kg 규격 종균의 필터가 구비된 종균의 경우 15.7cm, 마개형 10.5cm, 필터가 없는 종균은 7.5cm로 필터구비종균이 생장이 우수하였고, 균사밀도의 경우에도 필터형이 밀도가 높았다. $CO_2$ 농도는 신농73호 2.5kg 규격 종균의 필터가 구비된 종균의 경우 1,400ppm, 마개형 2,200ppm, 필터가 없는 종균은 3,200ppm 로 필터구비종균이 농도가 낮음을 알 수 있다. 3. 배양소요일수를 측정한 결과, 신농 73호에서 2.5kg 필터종균의 경우 18일, 마개필터 18일, 필터가 없는 처리는 19일로 큰 차이는 없었다. 생산량의 경우 신농73호에서 2.5kg 필터종균의 경우 118g, 마개필터 112g, 필터가 없는 처리는 100g으로 필터처리 종균이 생산력 측면에서 우수하였다.

• Current Research on Agriculture and Life Sciences
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• 제33권2호
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• pp.37-40
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• 2015

Poria cocos is an edible and pharmaceutical mushroom with a long history of medicinal use in Korea. For the last 30 years, the domestic cultivated supply of Poria cocos has been unable to meet consumer demand, so Poria cocos is collected in mountainous areas and also imported from China. Thus, to increase the supply of Poria cocos, many artificial cultivation methods have been studied. In this study, Poria cocos is cultivated under different environmental conditions using plastic bags and the results compared. When cultivating Poria cocos at different temperatures (20, 25, 30 and $35^{\circ}C$) and using different numbers of plastic bag layers (1, 2), the most efficient cultivation conditions were a temperature of $25-30^{\circ}C$ and 2 plastic bag layers. The fastest growth was at $25-30^{\circ}C$, and the Poria cocos exhibited no weight change when cultivated using layers of plastic bags (1, 2).

• 한국동물위생학회지
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• 제40권1호
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• pp.35-40
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• 2017

In order to find a way to reduce histamine formation when storing salted mackerel at home, a series of experiments were carried to monitor the time-related changes of histamine content, total aerobic bacteria and coliform quality of mackerel marketed in Incheon by the type of storage containers (clean, zipper and vacuum bag) during storage at $4^{\circ}C$, $24^{\circ}C$ and $-20^{\circ}C$ for 10 days. Histamine formation was continuously increased with passing time during storage at $4^{\circ}C$, whereas it was decreased after 3 days during storage at $24^{\circ}C$. The initial value of histamine was maintained during storage at $-20^{\circ}C$ for 10 days. During storage at $4^{\circ}C$, total aerobic bacteria and coliform showed a tendency to increased rapidly till 3day and then decreased gradually. The formation of histamine was increased in the order of vacuum bag$4^{\circ}C$.

• 한국의류산업학회지
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• 제13권1호
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• pp.82-90
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• 2011

This study examines if men in the 20's and 30's have different preference for bag types according to their age and gender-role identity types in order to provide foundational data for the male bag market to segment its customers and establish marketing strategies. Total 288 questionnaire sheets were distributed to 186 men in the 20's and 102 men in the 30's residing in Busan. First, according to the result of analyzing their preference for bag types, adult men in the 20's and 30's preferred cross bags the most. It was also shown that men who are feminine or androgynous prefer back packs, shoulder bags, and tote bags to the other two types. Second, about cross bags, men in the 20's showed a higher rate of having two or three than those in the 30's. Men in the 20's possessed back packs more than those in the 30's. And men tend to show a lower rate of having shoulder bags compared with that of cross bags or back packs. Men in the 30's possessed briefcases more than those in the 20's. Masculine men had more briefcases than the other types of bags, and androgynous men tend to have more tote bags than the other types of bags. Third, men in the 20's and 30's all deemed that back packs go well with the casual style. Men in the 20's regarded shoulder bags are the type of bags that harmoniously matches all styles including casual or semi-suit; however, men in the 30's think they only suit casual or semi-suit. And it was also found that men in the 20's think briefcases are the type of bags that goes well with various styles of clothes while men in the 20's consider they are the type of bags only matching suits.

• 한국컴퓨터정보학회논문지
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• 제17권9호
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• pp.85-90
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• 2012

현대 사회는 환경에 대한 관심을 많이 가지고 있다. 특히 먹거리가 풍부해지면서 음식물 쓰레기량이 더욱 늘고 있다. 이를 처리하기 위해 전 세계적으로 많은 고민을 하고 있다. 국내에서는 이를 줄이기 위해 쓰레기 종량제 봉투를 사용하여, 쓰레기를 정해진 양만큼 버리도록 하고 있어 연간 배출되는 쓰레기량을 줄이고 있다. 하지만 쓰레기 종량제 봉투를 사용하지 않고 일반쓰레기 봉투에 음식물또는 일반쓰레기를 넣어 쓰레기를 버리는 경우가 종종 있다. 이를 해결하기 위해 본 문에서는 쓰레기 종량제 봉투를 인식할 수 있는 인식장치를 개발하였다. 이 인식장치는 종량제 봉투를 인식함과 동시에 봉투의 재사용을 못하도록 하고 있다. 이 인식장치는 쓰레기 자동 집하장치에 적용될수 있으며 인식오차율은 1% 내로 정확성을 얻었다.

• 한국토양동물학회지
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• 제2권2호
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• pp.83-91
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• 1997

One year study with litter bags(mesh size - 0.4mm, 0.8mm, 1.7mm and 5.0mm) was carried out to investigate the soil invertebrate community in the process of leaf decomposition in Namsan and Kwangreung deciduous forests, which were considered to be under different degrees of environmental selective pressure. Soil animals collected from litter bags were classified into the class of order or higher taxa. Acari and Collembola were major groups: Acari and Collembola were about 60% and 30% of total soil animals in their numbers, respectively. Among minor groups, Dipteria, Araneae, Diplopoda, Coleoptera and Chilopoda were comparatively dominant. In Namsan forest which was considered to be under higher environmental selective pressure than Kwangreung, the densities of Acari and Collembola were somewhat higher than in Kwangreung, although there was no statistically significant difference between two sites. The densities of Chilopoda, Enchytraeidae and Nematoda were much higher in Namsan than in Kwangreung but Diplopoda and Symphyla were much more in Kwangreung. It was expected that those groups could be used as bioindicators. The densities of Acari and Collembola were very low until March and then showed the peak in May. But they decreased slowly until November. There was no significant difference among the mesh sized of litter bags in the densities of Acari and Collembola but other groups of soil invertebrates seemed to be prevented from immigrating into the litter bag of mesh size 0.4mm. Decomposition rate of litter in the litter bag was low in early stage of decomposition. The % residual mass over initial mass at 8 months after litter bag introduction in the field was over 80%. Thereafter, % residual mass decreased more fast and was about 60% at 1 year after bag introduction. There was little evidence for the effects of soil invertebrates upon the litter decomposition in the period of this study. And there was no significant difference between Namsan and Kwangreung or among mesh sizes of litter bags in the decomposition rate.

• 패션비즈니스
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• 제24권1호
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• pp.15-28
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• 2020

The purpose of this study was to develop and propose creative smart bags in emotional e-textiles using LEDs that inform smartphone users of motion-induced luminescence and ringing of cell phones. The LED light-emitting operation tasks produced in the study were applied to each of the three design smart bags, setting the five cases of luminance by a call initiated, absent phone, rejecting answering phone, texting, and motion-induced luminescence. In the male laptop bags of LED luminous images using wappen, 10 LEDs could be separated by a total of three pins to display the luminous mode, and all 10 LEDs became a total of five luminous patterns, including all that illuminate and those that illuminate randomly. E-wappen rendered the motif a strong sense of visibility and performed six roles on phone rings and texting. To develop a women's tote bag, we did a laser cut and attached the leather strips and placed 10 triangular LEDs to form a geometric LED e-textile. It provides the possibility of transforming simple design from traditional fashion into a more interesting and various smart designs. An entertainment smart bag using graphic design was constructed by applying a tilt sensor to look like a light in the night sky by shaking and moving the bag. The graphic design and composition of LEDs indicate that LEDs and fashion item are applied in harmony rather than heterogeneous, enabling them to be applied as fashion-oriented wearable smart products.

• 수산해양기술연구
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• 제34권1호
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• pp.6-12
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• 1998

The moving behaviour of Yellowtail Seriola quinqueradiata schools in the main-net of a large scale set-net was investigated in relation to the catching function of the funnel-net by a scanning sonar. The investigation was took place in the Kishihata set-net fishing ground located in Nanao city Ishigawa prefecture, Japan from Nov. 9 to Nov. 13, 1992. The obtained results are summarized as follows; 1. Fish schools showed the greatest number at the playground in the morning and at the bag-net in the afternoon. The fish schools remained long time in the main-net. 2. The rate of fish school through the funnel-net was smaller than that of fish school which is though the playground and bag-net. Because the Yellowtail school changed the shape of school in passing the funnel-net. 3. The rate of entering the bag-net was 24%, among the fish school heading to the outer funnel-net. But, the rate of escaping to the playground was 27%, among the fish school heading to the inner funnel-net. It seems that the structure of the outer funnel-net was not enough to lead the fish to the bag-net. However, the structure of the inner funnel-net was very effective at preventing escape. 4. It is appropriate to haul the net in the morning in considering the number of accumulated fish in the bag-net during the survey.