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Oral Administration of Novel Oriental Medicine, KIOM-C, Protect against Influenza Virus
Jin Yeul Ma, Eun Ha Kim, Jun Han Lee, Min-Suk Song, Yun Hee Baek, Young Ki Choi 충북대학교 동물의학연구소 2012 Journal of Biomedical and Translational Research Vol.13 No.2
The influenza virus is an important respiratory risk affecting humans, and effective treatments are needed. Some oriental medicines are currently applied for treatment of common colds as well as influenza infection. Previous studies have reported that the therapeutic properties of MA-128 are effective for treatment of psoriasis antiasthmatic and atopic dermatitis. In this study, we investigated the therapeutic properties of the novel herbal medicine, MA-128, for treatment of influenza virus infection by oral administration. MA-128 is an active natural biological compound from herbal-marine origin. The results showed that oral administration of MA-128 in mice could confer a survival benefit against Type A influenza virus infection. Daily oral administration of MA- 128 resulted in delayed death in infected mice for three days against mouse adapted H3N2 (A/Philippines/2/82). However, it protected more than 60% of mice from lethal infection of 2009 pandemic H1N1 (A/Korea/CJ01/2009) influenza virus. In addition, lung viral titers were significantly reduced at seven days post infection (~100 times) compared with mock-treated mice and viruses were cleared at 9 dpi only in the MA-128 treated groups. This study demonstrated the potential of the novel herbal medicine, MA-128, as an herbal remedy against influenza A viruses.
Ma, Haiqing,Mahadik, Mahadeo A.,Park, Jin Woo,Kumar, Manish,Chung, Hee Suk,Chae, Weon Sik,Kong, Gi Won,Lee, Hyun Hwi,Choi, Sun Hee,Jang, Jum Suk The Royal Society of Chemistry 2018 Nanoscale Vol.10 No.47
<P>In this study, we present an advanced strategy of low-temperature hydrogen annealing combined with high- temperature quenching in air for activating α-Fe2O3 nanorod photoanodes to boost the photoelectrochemical performance. We report that various low-temperature annealing conditions (340, 360, 380, and 400 °C) under hydrogen gas flow convert β-FeOOH into magnetite (Fe3O4) as well as introduce Sn<SUP>4+</SUP> diffusion from FTO substrates to its surface. Furthermore, high-temperature quenching (800 °C) resulted in the phase change of magnetite (Fe3O4) into hematite (α-Fe2O3) and self Sn<SUP>4+</SUP> doping into the hematite lattice. Thus, the hydrogen-assisted thermally activated hematite photoanode achieved a photocurrent density of 1.35 mA cm<SUP>−2</SUP> at 1.23 V <I>vs.</I> RHE and 1.91 mA cm<SUP>−2</SUP> at 1.4 V <I>vs.</I> RHE, which is 70% and 80% higher than that of directly quenched hematite at 800 °C. These combined two step strategies provide new insight into high Sn-self doping for α-Fe2O3 photoanodes and allow for further development of more efficient solar water oxidation systems.</P>
마진석(Jin Suk Ma),이광일(Kwang Il Lee),김우현(Woo Hyun Kim),권우현(Woo Hyen Kwon),임성운(Sung Woon Im),변승완(Seung Whan Byun),천호정(Ho Jeong Cheon) 한국센서학회 1999 센서학회지 Vol.8 No.2
In this paper, we present the new angular velocity pick-off method for DTG (dynamically tuned gyroscope) which is widely used in various inertial navigation systems and motion control systems. In case of the external angular velocity input, the proposed scheme can make a smaller tilt-angle rather than that of conventional PI method in the transient and steady state because it has an additional inner rebalance loop with a mathematical model of the real gyroscope. So, without any mechanical redesign of the DTG, its dynamic range can be enlarged by the proposed method. The theoretical analysis and simulation model of DTG with the proposed scheme are given. Finally, the proposed scheme is verified