• 한국대기환경학회지
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• 제21권6호
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• pp.605-612
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• 2005

In this study, the possible use of HMDA (Hexamethylenediamine) as additive to enhance reaction between $CO_{2}$ and AMP (2-amino-2-methyl-1-propanol) which has higher absorption capacity than that of MEA (Monoethanolamine) was investigated. Also, the absorption capacity for $CO_{2}$ was compared with addition of HMDA, piperazine or MDEA (N-methyldiethanolamine) into $30\;wt\%$ AMP at $40^{circ}C$ and $CO_{2}$ partial pressure ranging from 0.5 to 120 kPa. Apparent rate constant ($K_{app}$) and absorption capacity with the addition of $5\∼20\;wt\%$ HMDA into AMP increased $214.2\∼276.3\%$ and $29.9\∼91.7\%$ than those of AMP alone. As a result, when $5\;wt\%$ HMDA added into AMP, the increasing rate of the absorption rate and the absorption capacity was found to be the highest. In addition, the absorption capacity increased $6.8\%,\;9.8\%,\;11.6\%$ with addition of MDEA, piperazine or HMDA respectively as compared to AMP alone at $CO_{2}$ partial pressure of 20 kPa. Consequently, HMDA as additive to improve absorption capacity of AMP was superior to other additives.

• 한국대기환경학회지
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• 제14권6호
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• pp.537-544
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• 1998

We selected Spathiyhyllum patinii and Pachira aqkatica, since the former has high O3 absorption while the latter low absorption, and analyzed physiological factors such as diffusive coefficient, transpiration rate, photosynthetic rate, and CO2 absorption rate, which affected O3 absorption capacity There was significant relationship between gas absorption capacity and the other factors; photosynthetic rate, diffusive resistance, stomatal resistance and CO2 absorption rate. Therefore model formula for estimation of O3 absorption rate in plant was formulated by making use of these factors. There was difference for the estimation of O3 absorption rate according to plant species. In case of Spathiphyllum patinii, photosynthetic rate is an optimal factor for estimation of O3 absorption capacity. On the other hand, stomatal resistance and diffusive resistance are optimal factors of Pachira aquatica among various physiological ones. And we knew that CO2 absorption rate is a potential factor to evaluate gas absorption capacity regardless of plant species. But considering efficiency and practicality, diffusive resistance was the most effective factor for the estimation of O3 gas absorption.

• 한국마린엔지니어링학회:학술대회논문집
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• 한국마린엔지니어링학회 2002년도 춘계학술대회논문집
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• pp.267-272
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• 2002

The electric heat pump requiring HCFCs as a refrigerant has been for most residential air-conditioners in Korea. They cause a surge up electric power demand during summer. Moreover, the use of HCFCs and HFCs causes a serious problem to the global environment such as global warming and ozone layer destruction. An absorption chiller and heater could solve such problems. It was built and tested for analyzing the performance of the absorption chiller/heater. Experiment was done with a 1.5RT household absorption chiller and heater. It was experimented that the cooling capacity, gas capacity, COP were researched by the temperature of cooling water. The change of the cooling water temperature have effect the temperature(or pressure) of the parts on absorption chiller The result of the change of the cooling water temperature have the effects of the absorption chillers. This data will help to operate the household absorption chiller and heater.

• 대한건축학회논문집:구조계
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• 제34권2호
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• pp.49-56
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• 2018

The use of highly absorptive materials in cement-based materials is increasing for internal curing purpose. However, calculation of correct absorption capacity of such materials is not easy, which leads to change in the effective water-to-cement ratio of cement paste by either absorbing or releasing water. In this study, effective absorption capacity of a highly absorptive material was found using isothermal calorimetry. Moreover, the effect of specific surface area was investigated. It was found that the method was capable of finding effective water absorption capacity of activated carbon fiber. For the activated carbon fiber used in this research, the effect of specific surface area was negligible because the high BET surface area was due to micropores less than 1nm, which does not affect the rate of hydration curve. Thus, the effective absorption capacity of such materials can be found successfully using this method.

• 한국콘텐츠학회논문지
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• 제22권2호
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• pp.617-629
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• 2022

본 연구는 선박 부품제조 기업의 기술혁신이 경영성과에 미치는 영향관계에서 기술흡수역량의 매개효과를 실증적으로 분석하였다. 이를 통해, 향후 기술개발과 관련된 경영전략 수립의 개선방안에 시사점을 제공할 수 있을 것이다. 본 연구목적을 달성하기 위하여, 부산, 경남 지역의 조선, 선박 부품업체의 연구개발, 마케팅, 생산·제조, 자금/회계 부서에 근무하는 총 362명을 연구대상자로 선정하였다. 본 연구결과, 선박 부품제조 기업의 기술혁신, 기술흡수역량이 경영성과에 정(+)적인 영향을 미치는 것으로 파악되었다. 이러한 연구결과를 근간으로 한 결론은 기술흡수역량을 구성하는 잠재흡수역량과 실현흡수역량이 지속적인 기술 역량 축적 등 기술혁신과 경영성과 상호 간에 주요한 핵심 요인이 될 것으로 판단된다. 실무적인 관점에서는 선박 부품제조 산업은 스마트 부품공정 기술흡수 역량에 집중할 필요성이 제기된다.

• 한국공간구조학회논문집
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• 제6권2호
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• pp.131-136
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• 2006

It is important to evaluate energy absorption capacity of frames required during a design earthquake. An inelastic computer analysis based on mathematical modelling of energy absorbing frames and elements makes it possible to evaluate required energy absorption capacity. But such an analysis sometimes consumes much computation time particularly in case of complicated structural system. This paper presents a proposal to predict energy absorption of multi-bent steel frames by simple equivalent linear method.

• 한국수산과학회지
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• 제36권2호
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• pp.74-79
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• 2003

The functional properties such as a firming maintenance capacity for fermented vegetables, protein coagulation capacity antibacterial activity, calcium and peroxide absorption capacity of calcium powder of cuttle bone treated with acetic acid (ATC) were examined. In the Korean pickled cucumbers (20 days), the calcium content of ethanol insoluble solids was 5,264.9 mg/100 g and this value was higher than that of control (2,036.4 mg/100 g). Protein coagulation capacity of ATC was $0.9\%$ and its calcium absorption capacity was $49.3\%.$ The peroxide absorption capacity of ATC was shown $0-1.1\%$ range. Antibacterial activity was detected above $0.2\%.$ The ATC was effective in a firming maintenance of fermented vegetables (cucumber), coagulation capacities for soybean milk and antibacterial activity. The ATC was not effective in clarifying wastewater. Peroxide absorption capacity toward linoleic acid could not be checked by ATC, but its calcium absorption ratio was high compared to that of commercial calcium powder.

• 한국산학기술학회논문지
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• 제21권9호
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• pp.73-81
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• 2020

본 연구는 통합역량 IT 지원이 조직성과에 미치는 영향에 대해서 조직의 절제와 흡수역량이 매개했을 때의 영향에 대해서 실증 분석하였다. 본 연구에 대한 실증 분석을 위해 사기업과 공기업 종사자를 대상으로 총 126명의 설문을 바탕으로 Smart PLS 3.0으로 연구 모형을 검증하였다. 통계 분석결과 첫째, 통합역량 IT 지원은 조직절제의 하위 요인인 조정과 적응력에 모두 정(+)의 영향을 미쳤으며, 흡수역량에도 정(+)의 영향을 주었다. 둘째, 조직의 절제는 흡수역량에 정(+)의 영향을 미치는 것을 확인하였다. 셋째, 통합역량 IT 지원과 흡수역량의 관계에서 조직의 절제를 매개로 했을 때 정(+)의 영향을 미쳤다. 넷째, 흡수역량은 재무성과와 비재무성과에 정(+)의 영향을 미쳤다. 본 연구의 시사점은 IT 기술과 조직성과 관계에서 조직 윤리 차원의 요인으로 확장하여 상관관계를 검증함으로써 기존 연구들과 차별성을 두고 있다. 또한 흡수역량의 선행 요인으로써 조직의 윤리적 요인도 선행 요인으로서 작용함을 규명함에 따라 연구의 의의가 있다. 통합역량 IT 지원은 경영자에게 균형 있고 안정감 있는 의사결정에 도움을 주며, 이는 구성원들에게 조직에 대한 긍정적인 인식을 주어 흡수역량 향상에 기여할 수 있으며, 궁극적으로 조직성과에 긍정적인 영향 미친다. 흡수역량이 필수적인 조직의 성과 향상을 위해서는 적절한 IT 인프라 구축과 조직의 미덕 함양의 중요함을 시사한다.

• 벤처창업연구
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• 제15권6호
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• pp.155-166
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• 2020

본 연구는 재창업기업 대표를 대상으로 재창업자의 긍정심리자본 요인인 자기효능감, 희망, 회복탄력성이 흡수역량에 미치는 영향과 재창업자의 흡수역량이 의사결정의 질에 미치는 영향을 고찰하였다. 특히 본 연구는 재창업자에게 심리적 요인들 중 긍정심리자본이 어떠한 영향을 미칠까하는 궁금함에서 출발하였다. 연구대상은 중소벤처기업진흥공단으로부터 재창업 지원자금을 받은 재창업기업 대표를 대상으로 실시하였으며, 조사한 144명의 표본자료를 SPSS 24.0을 활용하여 빈도 분석을 Smart PLS 3.0을 활용하여 구조모형방정식 분석을 실시하였다. 재창업자의 심리적 특성인 긍정심리자본을 자기효능감, 희망, 회복탄력성의 3가지 요인으로 구분하여, 잠재적 흡수역량과 실행적 흡수역량에 미치는 영향을 분석한 결과, 자기효능감은 잠재적 흡수역량에 긍정적인 영향을 미치는 것으로 나타났고, 실행적 흡수역량에는 영향을 미치지 않는 것으로 나타났으며, 희망은 잠재적 흡수역량에 영향을 미치지 않는 것으로 나타났고, 실행적 흡수역량에는 긍정적인 영향을 미치는 것으로 나타났다. 회복탄력성은 잠재적 흡수역량 및 실행적 흡수역량에 긍정적인 영향을 미치는 것으로 나타났다. 그리고 잠재적 흡수역량 및 실행적 흡수역량은 의사결정의 질에 긍정적 영향을 미치는 것으로 나타났다. 이와 같은 연구결과를 바탕으로 실무적 시사점과 이론적 시사점을 제공하고자 한다.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2003년도 춘계학술대회
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• pp.1518-1523
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• 2003

The objective of the present work is to investigate an effect on the solution crystallization temperature difference and the cooling capacity of the absorption chiller by a solution cooler in the absorber. The cooling capacity of the absorption chiller can be higher, with the enhanced performance of the solution heat exchangers. But, because the solution crystallization temperature difference becomes smaller at the absorber inlet, the heat capacity of the solution heat exchangers might be limited by the danger of crystallization, which can cause the serious damages. In this paper, the heat capacity ratio of the solution cooler is defined as the ratio of the heat capacity of the solution cooler to that of the absorber. If it becomes larger in the additional type solution cooler, the solution crystallization temperature difference is augmented and the cooling capacity is also increased.