• Journal of Sensor Science and Technology
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• v.18 no.1
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• pp.1-21
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• 2009

There have been continued effects to develop various types of chemical sensors according to the demands in many application fields such as safety, pollution, environment, medical engineering and food industries etc. In this review, the author intended to cover the general aspects of chemical sensors, including the history of the development, the classification, the sensing properties, and the types and application examples. And the future outlook of the chemical sensor technology, focusing on the advanced materials, high technology fusion, miniaturized intelligent system and ubiquitous sensor networks etc., has been described.

• Journal of the Korean Institute of Gas
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• v.19 no.1
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• pp.45-50
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• 2015

This study is an analysis of characteristics and the causes of serious accidents in chemical industry. The statistical analysis was focused on preventive facilities, equipment failures, accident materials and instabilities of workers and employment type. First, it showed that the highest number of the victims of accidents were involved in the industry of chemical materials and chemical products among the investigation of the manufactural industries. Also, particularly, they were investigated to be focused on the occurrence of the serious accidents in preventive facilities. Secondly, the most of the victims of serious accidents were found out not to be temporary or part-time worker but regular workers and most of the accidents occur in the form of big accidents involving more than 4 workers.

• Proceedings of the Membrane Society of Korea Conference
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• 2002.07a
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• pp.23-34
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• 2002

No Abstract, See Full-text

• Polymer Science and Technology
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• v.8 no.2
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• pp.126-130
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• 1997

• Journal of the Korean Professional Engineers Association
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• v.29 no.1
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• pp.19-28
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• 1996

• Korean Chemical Engineering Research
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• v.49 no.4
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• pp.423-431
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• 2011

Recentincreasing awareness of the environmental damage caused by the $CO_2$ emission of fossil fuelsstimulated the interest in alternative and renewable sources of energy. Fuel cell is a representative example of hydrogen energy utilization. In this study, Molten Carbonate Fuel Cell system is simulated by using $Aspen^{TM}$. Stack model is consisted of equilibrium reaction equations using $ACM^{TM}$(Aspen Custom Modeler). Balance of process of fuel cell system is developed in Aspen $Plus^{TM}$ and simulated at steady-state. Analysis of performance of the system is carried out by using sensitivity analysis tool with main operating parameters such as current density, S/C ratio, and fuel utilization and recycle ratio.In Aspen $Dynamics^{TM}$, dynamics of MCFC system is simulated with PID control loops. From the simulation, we proposed operation range which generated maximum power and efficiency in MCFC power plant.

• 한국정보디스플레이학회:학술대회논문집
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• 2009.10a
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• pp.269-271
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• 2009

We investigated on the sintering behaviors and electrical properties of photo-sensitive aluminum (Al) electrode materials in plasma display panels. General characteristics of Al electrodes was totally different to that of conventional Ag materials; resistivity was decreased with the increasing of metal particle sizes and the amount of frit content and there is almost no width difference between developed and fired electrodes layers. Microstructures of fired electrodes revealed that Al electrodes had different mechanism on necking between metal particles and making electrical conducting path. Chemical durability (especially, antialkalinity) and adhesion of Al electrodes must be carefully controlled. Nevertheless there are difficulties of processing Al electrodes, we developed and optimized photo-sensitive Al materials as address electrodes without any changes of existing patterning equipment and sintering conditions.

• Journal of Adhesion and Interface
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• v.22 no.2
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• pp.69-77
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• 2021

A variety of efforts are attempted to make the world sustainable in fabrication industries worldwide. To achieve the goals, a new design concept for products is one of crucial factors to be able to dismantle them after use in easy and simple ways. New debonding technologies have been developed in recent years for the recycle and/or repair of bonded structures, where the bonds are broken without the damage of the components and make recycling easier. Some representative technologies of controlled delamination materials (CDM) are reviewed with an emphasis on light induced debonding of adhesives. We also describe current applications of light induced CDMs as temporary bondable films in semiconductor and display industries.

• Journal of the Ergonomics Society of Korea
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• v.30 no.1
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• pp.127-135
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• 2011

The nuclear power plants and chemical industries are trying to find human error to prevent occupational injury. The ratio of occupational injury is higher than the other industries in shipbuilding industry. It is known that the most important reason is human error. Recently, the shipbuilding industries interest in human error to prevent occupational injury. This paper outlines four approaches of human error identification used in shipbuilding industry such as survey of occupational injury, root cause analysis, risk assessment, and performance shaping factors. Finally, this paper proposes the interventions of ergonomics for preventing the human errors.

• Management & Information Systems Review
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• v.27
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• pp.101-129
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• 2008

This study introduced the inclusion of Global Value Chain (GVC) as a strategy for the globalization of domestic industries. In addition, this study intended to highlight direct foreign investment as an important opportunity for enhancing the competitiveness of the domestic small and medium firms. That is, globalization could be realized not only through simple capital inflow, but also through domestic industry's participation in the overseas production network. The analysis of the trend and pattern of direct foreign investment revealed that the FDI inflows heavily dependent on the USA and Japan have been diversified steadily over time. In spite of recent decline trend of overall FDI amount, inflows from European countries in machinery and chemical industries have been rising. These rising and diversifying trends in these industries are promising since FDI inflows have the potential of playing an important role in achieving productivity growth of domestic industries, particularly in the area of comparatively fragile industries such as machinery and chemicals. In the same logic, it is crucial for future growth of Korea that the small and medium firms find their competitive edges through strengthening production networks with foreign multi-national companies. Thus, it is suggested that the policy of globalization of small and medium firms should be based on the firm understanding of GVC and FDI pattern of industries.