• Proceedings of the KAIS Fall Conference
• /
• 2005.05a
• /
• pp.290-291
• /
• 2005

본 연구에서는 음극전리수가 paraquat에 의한 사람 임파구 DNA의 손상에 미치는 영향을 alkaline comet assay를 사용하여 조사하였다. 또한 음극전리수가 plasmid DNA 손상에 미치는 효과도 조사하였다. 사람 임파구에 다양한 농도의 paraquat을 처리한 후, 음극전리수를 첨가하여 반응시킨 결과 paraquat에 의한 임파구 DNA의 손상은 paraquat 농도증가에 의존적으로 증가하였다. 그러나 음극전리수를 처리한 결과 DNA의 산화적 손상이 paraquat 미처리 대조군 수준으로 거의 다 복구되었다.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.6 no.1
• /
• pp.87-93
• /
• 2005

The permeability of cathodic electrolyzed water toward electrophoretic gel and dissolvability of cathodic electrolyzed water toward green tea components were compared with those of general waters in this investigation. Stained band intensities of the proteins by CBB-R prepared in cathodic electrolyzed water were compared with those in deionized water for various time intervals. Proteins were stained first by CBB-R in cathodic electrolyzed water as compared with those by CBB-R in deionized water. Moreover, cathodic electrolyzed water showed dramatically enhanced solubility toward green tea components at $25^{\circ}C$ than general waters. These results suggest much greater permeability and dissolvability of cathodic electrolyzed water than those of general waters.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
• /
• v.27 no.11
• /
• pp.1023-1026
• /
• 2016

We calculate the propagation characteristic of antennas considering refractive indices of space environments. The effective indices of troposphere, stratosphere, and inonshpere are computed and the ray tracing method, geometrical optics, and Huygens' principle are used to estimate refracted and attenuated electromagnetic wave of space environment.

• Korean Journal of Environmental Biology
• /
• v.22 no.2
• /
• pp.265-272
• /
• 2004

Biological characteristics of anodic electrolyzed water were investigated in this study. Linear DNAs which were incubated at $4^\circ{C}$ and $25^\circ{C}$ for 10 mins in the anodic electrolyzed water were degraded about 40% and 50%, respectively. But the DNA was amplified pretty well without any degradation through polymerase chain reaction in the presence of anodic electrolyzed water. Protein degradation hardly occurred in the distilled water during entire incubation time of 7 days, while protein began to be degraded from 4 days in the anodic electrolyzed water. Rice seeds could germinate in the distilled water and anodic electrolyzed water with the same germination ratio, however, the anodic electrolyzed water inhibited the growth of roots and total length of rice seedlings in the soil. Anodic electrolyzed water did not affect the growth curve and cell number of marine alga significantly. The anodic electrolyzed water inhibited the browning of potato by inactivating 50% of polyphenol oxidase activity.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.6 no.2
• /
• pp.215-221
• /
• 2005

The antibacterial effects of electrolyzed reduced water on the bacterial growth were studied in this investigation. Upon treating with electrolyzed reduced water for 2 minutes, about 70% Escherichia coli and 61% Bacillus cereus were controlled. When these two bacteria were exposed to electrolyzed reduced water for 30 minutes, about 89% Escherichia coli and 94% Bacillus cereus were controlled. About 55% Pseudomonas aeruginosa was also controlled upon treateing with electrolyzed reduced water for 2 minutes, and 65% Pseudomonas aeruginosa was controlled during 4 hour incubation. When Staphylococcus epidermidis was treated with electrolyzed reduced water for 4 hours, 73% of the bacterial growth was inhibited, while only 44% Staphylococcus aureus.subsp.aureus was controlled with electrolyzed reduced water for 4 hours.

• Proceedings of the KAIS Fall Conference
• /
• 2005.05a
• /
• pp.295-296
• /
• 2005

본 연구에서는 양극전리수의 여드름균에 대한 제어력을 조사해보았다.. 그 결과 대조군과 비교해보았을 때 여드름균은 양극전리수에 1 분 동안 노출되었을 때 완전히 사멸되었다.

• Applied Biological Chemistry
• /
• v.48 no.2
• /
• pp.155-160
• /
• 2005

Electrolyzed reduced water (ERW), showing extremely negative oxidation-reduction potential, was used to investigate the effects of paraquat-induced damages on DNA from human lymphocyte. The effect of ERW on paraquat-induced oxidative DNA damage in human lymphocytes was evaluated by Comet assay (single-cell gel electrophoresis) quantified as percentage fluorescence in tail. Comet assay has been used widely to assess the level of the DNA damage in individual cells. Lymphocytes were oxidatively challenged with various concentrations of paraquat for 30 min at $37^{\circ}C$, and were then treated with electrolyzed reduced water for 30 min. The oxidative DNA damage by paraquat, as indicated by the fluorescent tail in DNA, increased in a dose-dependent manner. However, oxidative damage of the DNA was almost completely prevented upon treatment with electrolyzed reduced water.

• Journal of Space Technology and Applications
• /
• v.2 no.2
• /
• pp.104-120
• /
• 2022

The Small Scale magNetospheric and Ionospheric Plasma Experiment (SNIPE)'s scientific goal is to observe spatial and temporal variations of the micro-scale plasma structures on the topside ionosphere. The four 6U CubeSats (~10 kg) will be launched into a polar orbit at ~500 km. The distances of each satellite will be controlled from 10 km to more than ~1,000 km by the formation flying algorithm. The SNIPE mission is equipped with identical scientific instruments, Solid-State Telescopes(SST), Magnetometers(Mag), and Langmuir Probes(LP). All the payloads have a high temporal resolution (sampling rates of about 10 Hz). Iridium communication modules provide an opportunity to upload emergency commands to change operational modes when geomagnetic storms occur. SNIPE's observations of the dimensions, occurrence rates, amplitudes, and spatiotemporal evolution of polar cap patches, field-aligned currents (FAC), radiation belt microbursts, and equatorial and mid-latitude plasma blobs and bubbles will determine their significance to the solar wind-magnetosphere-ionosphere interaction and quantify their impact on space weather. The formation flying CubeSat constellation, the SNIPE mission, will be launched by Soyuz-2 at Baikonur Cosmodrome in 2023.

• Proceedings of the KAIS Fall Conference
• /
• 2004.11a
• /
• pp.259-261
• /
• 2004

일반 증류수로 제조된 완충용액으로 미세조류를 파쇄하였을 때 미세조류의 두꺼운 세포벽에 의해 단백질 추출이 효율적으로 이루어지지 않는다. 따라서 일차원 및 이차원 전기영동법을 사용하여 단백질 발현 양상을 분석할 때 효율이 떨어진다. 본 연구에서는 물의 클러스트가 작아 세포벽에 잘 흡수될 수 있다고 알려진 환원전리수를 사용하여 효율적으로 단백질을 추출하였고, 이차원 전기영동법으로 단백질 발현 양상을 확인하였다.

• Journal of Space Technology and Applications
• /
• v.1 no.2
• /
• pp.178-198
• /
• 2021

The Solar Space Environment Division of the Korean Society of Space Science (KSSS) has recently conducted a survey among the domestic researchers affiliated with academia, national research institutes, and for-profit institutes of how the data and models in their professional research field are produced, maintained, and utilized. The primary purpose of this survey is to increase the awareness and utilization of the space environment data and models as well as to promote constructive collaborations among the domestic and international researchers. The models and data surveyed are categorized into three sub-fields: the solar and interplanetary space, the (terrestrial) magnetosphere, and the ionosphere and upper atmosphere. The present paper reports the survey results in the "Magnetosphere" category. The survey shows that the domestically produced data in this category are far less than the data produced in other categories. This can be understood in part as follows: Magnetospheric research relies heavily on the in-situ observations but the development and operation of space-hardened satellites require a significant investment. Nevertheless, the recent publications show an increasing trend of research using the data from the ground stations and the recently launched domestic space missions. In the modeling front, there are first-principles physics models covering from the magnetospheric scale to the sub-ion scale and the models geared towards the space weather prediction. The detailed survey results can be accessed from the KSSS website (http://ksss.or.kr/).