• 전기의세계
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• v.11
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• pp.31-36
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• 1963

본고의 내용은 다음과 같다. 1. 동작원리와 검출기에 요구되는 재질 2. 각종 반도체 검출기의 구조 및 특징 3. 검출기의 Diode특성

• Proceedings of the Korean Fiber Society Conference
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• 1994.04a
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• pp.59-59
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• 1994

• Computational Structural Engineering
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• v.17 no.4 s.66
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• pp.23-28
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• 2004

• 한국전기화학회:학술대회논문집
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• 1999.04a
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• pp.31-31
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• 1999

• Proceedings of the Korea Water Resources Association Conference
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• 2002.05b
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• pp.811-816
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• 2002

• Proceedings of the Korean Nutrition Society Conference
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• 2001.05a
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• pp.247.1-247
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• 2001

• Journal of the Korean Vacuum Society
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• v.3 no.4
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• pp.401-404
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• 1994

초고 진공영역에서 배기특성 개선을 위하여 재질 및 구조가 다른 세가지 형태의 60(l/s) 형이온 펌프를 제작하여 그 배기특성을 측정하였다. 그 결과 음극판에 Ta 선을 전기용접한 펌프와 양극 cell의 구조에 변화를 준 펌프의 배기속도가 상용으로 이용되고 있는 펌프에 비해 약 50% 이상 개선되었다.

• Journal of Sensor Science and Technology
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• v.5 no.2
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• pp.37-46
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• 1996

This paper describes a system that can be used to recognize unknown materials regardless of the change in ambient temperature by using temperature response curve fitting and fuzzy neural network(FNN). There are problems with a recognition system which utilize temperature responses. It requires too many memories to store the vast temperature response data and it has to be filtered to remove the noise which occurs in experiments. Thus, this paper proposes a practical method using curve fitting to remove the above problems of memories and noise. Also, the FNN is proposed to overcome the problem caused by the change of ambient temperature. Using the FNN which is learned by temperature responses on fixed ambient temperatures and known thermal conductivity, the thermal conductivity of the material can be inferred on various ambient temperatures. So the material can be recognized via its thermal conductivity.

• Food Science and Preservation
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• v.15 no.6
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• pp.804-809
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• 2008

Modified atmosphere packaging (MAP) was assessed in terms of extending the shelf life of Solidago virgaurea spp. gigantea. In June 2005 Solidago virgaurea spp. gigantea were harvested from Ulleung Island, packaged in $30\;{\mu}m$ PP, $30\;{\mu}m$ Antifogging-OPP, $30\;{\mu}m$ LDPE, $18\;{\mu}m$ Macroperforated-HDPE, $60\;{\mu}m$ nylon/PE, or $85\;{\mu}m$ PVC/PE film, then stored at 4, 10 or $20^{\circ}C$ for up to 14 days. The $O_2$ concentration decreased to $9{\sim}10%$ in the PP and A-OPP packaging, to $12{\sim}16%$ in LDPE packaging, and to 2% in nylon/PE and PVC/PE packaging at $10^{\circ}C$. The $CO_2$ concentration increased to 5% at $10^{\circ}C$ in PP, A-OPP and LDPE packaging, but increased consistently in the nylon/PE and PVC/PE packaging. Weight loss was markedly reduced by all MAP films except M-HDPE, and which was enhanced with decreasing storage temperature. The soluble solids and pH were not affected by the packaging material at $4^{\circ}C$ and $10^{\circ}C$, but were affected at $20^{\circ}C$. The highest score for sensory qualities (appearance, color and overall acceptability) was obtained for vegetables stored at $4^{\circ}C$ in PP films. Our results show that MAP using PP films and $4^{\circ}C$ storage can effectively maintain the quality of Solidago virgaurea spp. gigantea.

• Journal of Korean Society of Environmental Engineers
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• v.30 no.4
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• pp.401-408
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• 2008

Adsorption performance of sulfonamide antibiotic compounds such as sulfadimethoxine(SDM), sulfachloropyridazine(SCP), sulfamethazine(SMT), sulfathiazole(STZ) and sulfamethoxazole(SMX) on granular activated carbon(GAC) was evaluated in this study. The coal-based activated carbon was found to be more effective than other carbons in adsorption of sulfonamide antibiotic compounds. The wood-based activated carbon was less effective than coconut- and coal-based carbon in adsorption nevertheless having larger pore volume and specific surface area than others carbons. The maximum adsorption capacities(X/M) of coal-based activated carbon for the five sulfonamide species was 1.3$\sim$1.5 and 1.8$\sim$2.1 times larger than coconut- and wood-based activated carbon, respectively. Carbon usage rates (CUR) of coal-, coconut- and wood-based activated carbons for SCP were 3.55 g/day, 4.29 g/day and 6.47 g/day, respectively. Similar results were obtained in the adsorption of the rest four sulfonamide species. It is concluded that coal-based activated carbon could removed the sulfonamide antibiotic compounds better than other material-based activated carbons.