• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 2004.10a
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• pp.326-329
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• 2004

본 연구에서는 김치로부터 분리한 L. brevis, L. curvatus, L. plantarum, L. sake가 발효소시지 환경에 잘 적응하는지 그리고 어떠한 발효 대사 특성을 가지는지에 대해 조사하였다. 조사한 젖산균들 중에서 L. plantarum은 가장 좋은 성장도와 함께 좋은 pH 저하 능력을 보여주었을 뿐 아니라 homo-fermentative 특성을 보여주어 starter culture로 사용될 가능성을 보여 주었다. 또한 L. plantarum은 첨가된 nitrate나 nitrite를 분해하는 능력까지 보여 조사한 젖산균들 중에서 starter culture로서 가장 적절할 것으로 여겨지나, 이들도 첨가된 nitrate나 nitrite에 의해 그 성장도가 저해되는 현상을 볼 수 있었다.

• Proceedings of the KIEE Conference
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• 2008.07a
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• pp.643-644
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• 2008

This paper is analyzed the effect on characteristics of thrust force of linear induction motor(LIM) by rotational type tester. Many kinds of tester have a rotational shape because of a finite length of railroad. Whereas effects by using rotational type tester are generally unknown. For reason of that, this paper will be analyzed the effect on characteristics by rotational type tester using 2D finite element method(FEM), and then will be compared a thrust force between linear type tester and rotational type tester.

• 한국생물공학회:학술대회논문집
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• 2002.04a
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• pp.269-270
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• 2002

Oxygen is a key substrate in animal cell metabolism and its consumption is thus a parameter of great interest for monitoring and control in animal cell culture bioreactor. The use of a gas-permeable membrane offered the possibility to provide the required quantity of oxygen into the culture. while avoiding problems of foaming or shear damage generally linked to sparging. For determining the optimum DO control strategy of this gas-permeable membrane aeration bioreactor, the oxygen transfer rate coefficient was measured with varying $N_2$ ratio in inlet air. The results showed that an increasing mass flow rate of nitrogen reduced the $K_La$ value. and 5% nitrogen in air did not result in any oxygen limitation.

• 한국생물공학회:학술대회논문집
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• 2002.04a
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• pp.271-272
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• 2002

Newcastle disease virus (NDV) vaccines were produced from Vero cells by using lively attenuated virus strain. The MOI of 0.1.' serum concentration of 2%. initial pH of 8.0. and infection time of 3 days were found to be optimum conditions for vaccine production. The treatment of polycation enhanced the virus production. When ascorbic acid was added as an antioxidant, NDV production was also enhanced. Utilization of $CaCl_2$ showed an inhibitory effect on the propagation of NDV. It was also found the ammonium ion concentration higher than 4mM inhibited virus production. Thus ammonium ion removal system was tried for the efficient production of NDV vaccine.

• Proceedings of the Korea Contents Association Conference
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• 2013.05a
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• pp.299-300
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• 2013

인터렉션 가시화 기술은 네트워크상의 다양한 데이터를 기반으로 지속적으로 생성, 공유 및 재생성되는 다양한 정보와 지식의 다차원적인 연결 구조를 컴퓨터 그래픽 기술을 이용하여 지식을 직관적으로 가시화하는 가술이다. 몰입형 인터렉션 기술을 통해 지식이 혼합현실 환경에서 명시적으로 표시되고 물리적으로 사용자가 인터렉션 할 수 있도록 한다. 중요 인터렉션 가시화 기술로는 디지털 메뉴팩쳐링 방법, 3D 가시화 방법, 몰입형 디스플레이 기술 등이 있다.

• Proceedings of the Korean Vacuum Society Conference
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• 2011.02a
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• pp.402-402
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• 2011

이번 연구에서는 DC magnetron sputtering을 이용하여 타겟의 각도 변화를 주어 각도 변화에 따른 원자의 거동분석에 대해 수행하였다. 타겟의 각도가 증가할수록 비저항이 증가하고 있으며 40도의 각도의 약 600 nm의 두께에서 $5.5{\times}10^{-4}{\Omega}cm$로 나타났으며, 가시광선 영역에서 88%의 투과도를 보이는데 이는 타겟 각도에 따라 Ar 이온으로부터 나온 입자들에 의해서 플라즈마가 형성되면서 플라즈마 산란이 발생한 것으로 보며, 특히 비저항 감소와 달리 이동도 및 농도가 감소하는 형태를 보이는데 이는 Hall 측정을 통해 알 수 있다. 타겟 각도 변화는 결정 성장 방해에 영향을 주어 결정 크기는 감소하면서 스트레스로 인한 FWHM 증가가 이를 입증해 주고 있다.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2012.05a
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• pp.121-122
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• 2012

• Bulletin of the Korean Chemical Society
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• v.35 no.4
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• pp.1001-1004
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• 2014

We have synthesized disc-like large silver nanomaterials that have nanostructured bumps on the surface using smaller nanoplate seeds. The size and shape of the bumpy nanostructures are rationally controlled by changing the concentrations of nanoplate seeds, silver ion, reductant, and citrate ion. Importantly, the synthetic mechanism of these bumpy nanostructures is remarkably similar to that of the conventional seed-mediated growth based on tiny seeds. We have further investigated the catalytic properties of the bumpy nanostructures for the reduction of 4-nitrophenol, which is associated with a concomitant color change from yellow to colorless.

• Industrial Engineering and Management Systems
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• v.11 no.1
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• pp.103-113
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• 2012

A yard in a container terminal is a temporary storage space before containers are loaded onto the target vessel or delivered to consignees. For improving the utilization of the space in the yard and the efficiency of loading and discharging operations, it is important that operation plans must be carefully constructed in advance. A heuristic method is suggested to solve operation space planning problems considering workloads on handling equipment as well as space availabilities. The operation plans in this paper includes quay crane (QC) schedules and space plans for multiple vessels considering the workload in the container yard of container terminals. This paper evaluates the effectiveness of a space planning method and the performance of a new QC scheduling method using a simulation model.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.60 no.4
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• pp.771-775
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• 2011

This paper presents design process of linear induction motor in dynamic tester for catenary-current collection. To minimize length of rail for dynamic tester for catenary-current collection, accelerating performance of the linear induction motor is very important. So the design process of linear induction motor considered in this paper is different with general design process of linear induction motor, because dynamic tester has three type driving region, as accelerating region, constant speed region, and braking region. Considering accelerating performance of motor, distance and time from starting point to constant speed region were concerned for load condition of motor. Designed linear induction motor was analyzed by 2-dimensional finite element method. Using mechanical dynamics simulation with analysis result of 2-dimensional finite element method and accelerating performance of designed motor was proved.