• Journal of Marine Life Science
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• v.7 no.2
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• pp.205-212
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• 2022

Transport is essential in the farming process of farmed fish and is one of the physical stress factors such as sorting. The effect of water temperature and anesthesia during low salinity transport was confirmed. In the experimental group, the water temperature was set to 20℃ (natural water temperature, NWT), 15℃ (cooling water temperature, CWT) respectively, in water with a salinity concentration of 35‰, 15‰ and an anesthetic (anesthesia, Anes., Sigma USA) was diluted and mixed to 50 ppm. A styrofoam box (66×42×20 cm) was used as a transport container, and 8 flounder were accommodated and transported in a plastic bag injected with 3 ℓ of seawater and liquid oxygen. As a result of the study, the concentration of cortisol before transport increased significantly from 2.4±0.1 ng ml^-1 in the experimental groups except for the CWT+35‰ group (16.7±12.8 ng ml-1). The K⁺ concentration slightly increased from 3.1±0.0 mEq l^-1 before transport to 4.5±1.1 mEq l^-1 in the NWT+15‰ group, showing no difference, and significantly increased in all other experimental groups. There was no effect on changes in blood characteristics, and water temperature and anesthetic had a negative effect on osmotic control due to stress. AST and ALT were not affected.

• Journal of the Korea Society for Simulation
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• v.20 no.3
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• pp.89-100
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• 2011

The MAGLEV (Magnetically Levitated Vehicle) system, which is under commercialization as a new transportation system in Korea, is operated by means of unmanned automatic control system. Therefore the plan of train operation should be carefully established and validated in advance. In general, when making the train operation plan, the statistically predicted traffic data is used. However, traffic wave can occur when real train service is operated, and the demand-driven simulation technology is required to review train operation plans and service qualities considering traffic wave. This paper presents a method and model to simulate the MAGLEV's operation considering continuous demand changes. For this purpose, we employed the discrete event model which is suitable for modeling the behavior of railway passenger transportation, and modeled the system hierarchically using DEVS (Discrete Event System Specification) formalism. In addition, through the implementation and experiment using DEVSim++ simulation environment, we tested the feasibility of the proposed model and it is also verified that our demand-driven simulation technology could be used for the prior review of the train operation plans and strategies.

• Journal of the Korean Society for Railway
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• v.17 no.5
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• pp.373-380
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• 2014

With a view to the commercialization of the Korean automatic variable-gauge bogie in the Eurasia railway system, the aim of this research was to perform an economic analysis concerning the possible introduction and operation of this bogie at the present time. For this purpose, we compared the possible types of freight connection service for container transportation, transshipment and the gauge-adjustable system, estimating the total life-cycle cost (LCC) incurred by each system, depending on type and quantity, over the whole process of acquisition, operation, maintenance and disposal. Based on this, we presented a case-by case analysis. Furthermore, in estimating economic feasibility, we analyzed the cost-benefit ratio taking into account not only the objective LCC, but also the reduced time required for the gauge-change and customer convenience. After estimating the LCC and analyzing the cost-benefit ratio of the respective systems, we demonstrated the economic superiority of view of the gauge adjustable system.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.7
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• pp.3096-3102
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• 2011

Vanilloid receptor, TRPV1 (transient receptor potential vanilloid 1) is a non-selective cation channel that responds to a variety of pain-eliciting material including capsaicin, pH, heat. Although, membrane trafficking of TRPV1 was not much known so far, TRPV1 was reported to interact with FIP3 (family of Rab11 interacting protein 3). FIP3 was identified as one of Rab11 interacting proteins that is recently reported important in membrane trafficking of several channel proteins directly or indirectly. Therefore, in this study, we examined the role of Rab11 in the membrane trafficking of TRPV1 using cell biological and biochemical techniques. Rab11 was found really colocalized with TRPV1 based on the result of confocal microscopy. However, GST-pulldown assay, one of biochemical technique, found that Rab11 did not interact with TRPV1. Although Rab11 does not interact with TRPV1 directly, we hypothesized that Rab11 is indeed involved in the membrane trafficking of TRPV1. In order to examine further the role of Rab11 in the membrane trafficking of TRPV1, the expression of TRPV1 on the membrane was examined when the expression of Rab11 was decreased down to about 50% by siRNA technique and found decreased significantly. From this result, we can conclude that Rab11 is involved in the membrane trafficking of TRPV1 in a way of including FIP3.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 1999.07a
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• pp.274-281
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• 1999

청과물은 품종, 재배기술, 환경의 요인 등에 영향을 받아 품질, 형상, 색택, 병충해의 상해정도가 다르게 나타남에 따라 농산물의 다양한 상품성이 결정된다. 또한 수확, 저장, 포장. 수송, 상하차 등 유통과정에서의 취급여하에 따라 기계적으로 손상을 받음은 물론 유통기간이 길어짐에 따라 호흡 및 증산작용 등 생리적 작용으로 부패 및 변질이 진행되어 유통과정 중 농산물의 품질저하가 상당한 수준에 이르고 있으나, 이에 대한 관심은 매우 빈약한 실정이다. (중략)

• Proceedings of the KGS Conference
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• 2003.05a
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• pp.181-184
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• 2003

경제 제도의 전환기를 맞이하고 있는 중국은 20세기 마지막 20여 년간 빠른 경제 발전을 이루었으며 중국의 도시는 계획경제체제와 중국식 시장경제체제 하에서 독특한 발전 과정을 겪어왔다. 이러한 발전 과정에서 도시 간 물류의 유동과 상호작용을 가장 뚜렷하게 반영할 수 있는 것은 철도망과 철도 운수라고 할 수 있다. 특히 도시간의 장거리 수송은 철도를 위주로 하고 있으며 철도망의 발달은 중국 도시의 형성과 발전에 중요한 요인으로 간주되고 있다. 그러므로 철도망의 구조와 철도 운송 자료는 중국 도시체계의 공간구조를 이해하는데 적절한 지표라고 볼 수 있다. (중략)

• Journal of the korean Society of Automotive Engineers
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• v.17 no.2
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• pp.35-41
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• 1995

본 연구는 자동차, 항공기 등의 수송체계의 설계에서 재료가 적용되는 과정을 통하여 설계에서의 재료의 기능 및 역할을 살펴보고, 최소의 비용으로 기능요건을 최대로 충족시키는 경제적 설계가 될 수 있도록 의사결정을 지원해주는 몇가지 분석기법을 소개하기로 한다. 1. 구조설계에서의 재료의 기능 및 역할. 2. 재료의 경제성 평가.

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 1997.11a
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• pp.51-58
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• 1997

열량이 높고 깨끗하여 취급이 간편하며 공해가 없는 가스 연료의 사용량은 현재 뿐만 아니라 향후에도 계속 증가될 것으로 보인다. 이러한 가스는 발전용을 비롯해서 공장용, 가정용 등으로 광범위하게 사용되며 이에 따른 유통과정중에 필요한 각종 운반설비, 공급설비, 사용설비 등의 설치가 증가되고 있다. (중략)

• Nuclear industry
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• no.5_6 s.13
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• pp.57-62
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• 1983

방사성폐기물은 원자력발전에 의한 것이 그 대부분을 차지하며 의학, 공업이용 등에서 발생되는 것이 여기에 추가된다. 발생된 폐기물은 고화${\cdot}$희석 등의 처리를 한후 필요에 따라 수송, 저장, 보관을 거쳐서 최종적으로 처분된다. 이 일련의 과정에 따라 그 안전성을 확보하기 위해서 여러 가지의 규칙, 기준이 설정되어 있으며 몇가지는 앞으로 더 책정되어야 할 필요가 있다.

• The Magazine for Energy Service Companies
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• s.64
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• pp.24-27
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• 2010

최근 기후변화정책 수립과정 중인 배출권 할당 및 거래제도와 관련하여 부문별 책임할당에 대한 논의를 살펴볼 필요가 있다. 이는 적정한 기준과 원칙에 입각해 산업계에 대한 배출삭감에 대한 좁은 논의가 아닌, 산업 및 건물(가정상업), 수송부문의 적절한 책임배분에 대한 논의이다.