• Journal of Yeungnam Medical Science
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• 제28권2호
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• pp.145-152
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• 2011

Background: To evaluate the changes in the radiation dose and temperature distribution on irradiated egg albumin and nanoparticle ($Fe_3O_4$) powder mixed egg albumin. Methods: A new type of phantom was designed by fabricating a $30{\times}30{\times}30cm$ acryl square inside a $3{\times}3{\times}3cm$ small square and dividing it into two parts. In the control group, only egg albumin was irradiated, and in the test group, 25 nm 20 mg/cc, 25 nm 40 mg/cc, and 1 um 40mg/cc nanoparticles with egg albumin were irradiated. The radiation isodose distributions and temperature changes were then observed. Results: No significant changes were observed in the radiation dose and temperature distribution. Conclusion: The nanoparticles were considered not to have had any effect on the radiation dose and temperature distribution under the experimental conditions. Further studies can be conducted based on the changes in the mixture material.

• Journal of the Korean Ceramic Society
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• 제45권10호
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• pp.605-609
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• 2008

This work describes the preparation of functionalized magnetic nanoparticles(MNPs) and their bioapplication to human DNA separation. Silica coated MNPs were prepared by changing the volume ratio of tetraethyl orthosilicate(TEOS) for controlled coating thickness on the original nanoparticle of MNPs. The sol-gel process in silica coating on MNPs surface was adapted for relatively mild reaction condition, low-cost, and surfactant-free. And then amino functionalized magnetic nanoparticles were synthesized using amine groups as surface modifiers. The result of adsorption efficiency for human DNA with amino-functionalized silica coated MNPs was calculated as a function of the number of amine groups.

• Bulletin of the Korean Chemical Society
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• 제33권6호
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• pp.1983-1988
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• 2012

Stem cell transplantation is emerging as a possible new treatment for liver cirrhosis, and recent animal studies have documented the benefits of stem cell therapy in a hepatic fibrosis model. However, the underlying mechanism of stem cell therapy is still unclear. Among the proposed mechanisms, the cell replacement mechanism is the oldest and most important, in which permanently damaged tissue can be replaced by normal tissue to restore function. In the present study, Cy5.5-labeled superparamagnetic iron oxide (SPIO) was used to label human mesenchymal stem cells. The uptake of fluorescently labeled nanoparticles enabled the detection and monitoring of the transplanted stem cells; therefore, we confirmed the direct incorporation and differentiation of SPIO into the hepatocyte-like transplanted stem cells by detecting human tyrosine aminotransferase (TAT), well-known enzymatic marker for hepatocyte-specific differentiation.

• Proceedings of the Korean Magnestics Society Conference
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• 한국자기학회 2003년도 somma/kms meeting
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• pp.289-289
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• 2003

• Proceedings of the Korean Magnestics Society Conference
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• 한국자기학회 2004년도 동계학술연구발표회 논문개요집
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• pp.113-114
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• 2004

• Proceedings of the Korean Magnestics Society Conference
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• 한국자기학회 2007년도 The 1st International Symposium on Advanced Magnetic Materials
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• pp.195.2-195.2
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• 2007

• Proceedings of the Korean Powder Metallurgy Institute Conference
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• 한국분말야금학회 2005년도 추계학술강연 및 발표대회강연 및 발표논문 초록집
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• pp.59-60
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• 2005

• Proceedings of the Korean Magnestics Society Conference
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• 한국자기학회 2004년도 하계학술연구발표회 논문개요집
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• pp.126-127
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• 2004

• Proceedings of the Korean Powder Metallurgy Institute Conference
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• 한국분말야금학회 2002년도 춘계학술강연 및 발표대회
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• pp.48-50
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• 2002

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• Proceedings of the Materials Research Society of Korea Conference
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• 한국재료학회 2006년도 추계학술발표대회 및 제11회 신소재 심포지엄
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• pp.8.1-8.1
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• 2006