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RISS 인기검색어
- 검색키워드
- 저자 : Kaneco, Satoshi (검색결과 4 건)
- 무료
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- 유료
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An Effect of Artificial Movement on the Growth of Zea mays L.
Lee, Il Koo,Kaneco, Ujiu 건국대학교 1978 學術誌 Vol.22 No.1
人體는 運動에 의하여 血液循環이 잘 되고 따라서 모든 代謝作用이 잘 되듯이 植物體도 適當한 運動을 시키면 더욱 잘 자라고 結實도 좋을 것이라는 恩師 金子卯時雨博士의 이야기를 듣고, 玉蜀黍를 材料로 해서 實驗을 한 結果를 報告하는 바이다. 玉蜀黍를 同時에 Pot에 심어서 비닐製簡易 frame에 넣고 한 group은 每日 A.M. 9, 12, P.M. 5시의 3回에 1時間式 扇風機의 바람으로 植物體에 運動을 시키고 딴 group은 運動없이 生育시키고 其他의 條件은 同一하게 하였다. 그 結果 바람에 의한 運動을 시킨 植物體의 전이 肥大 生長에 있어서 훨씬 良好하고 物質 生産量도 많았다. 그러나 附記하여야 할 것은 本 硏究의 計劃이 多幸하게도 植物體에 주는 扇風機에 의해서의 運動量이 適切限度內에 있었기 때문에 成功한 것이고 萬若 過度한 運動을 주었다면 勿論 植物의 生長은 반대로 阻害를 받았을 것이다. Dr. Ujiu Kaneko suggested that proper movement may accelerate the growth and fruit-bearing of a plant body as if the circulation of the blood and metabolism of the human body is facilitated by movement. Zea mays (Indian corn) was used as a sample plant fur the present experiment and the results obtained are summarized as follows : Indian corn was planted in pots simultaneously and cultured by placing the pots in simplified vinyl frame. One group was kept in movement for growth by using the current of an electric fan for one hour through three times at 09 :00 hours a.m., 12 :00 hours a.m., and 17 :00 hours p.m. every day, while other group wag kept grown without movement under the same conditions as in case of the former group. As a result, the plant body kept in movement by the current of an electric fan showed far better growth and larger material yield.
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Direct Analysis of Aerosol Particles by Atomic Emission and Mass Spectrometry
Kawaguchi, Hiroshi,Nomizu, Tsutomu,Tanaka, Tomokazu,Kaneco, Satoshi 한국분석과학회 1995 분석과학 Vol.8 No.4
A method for the direct determination of elemental content in each of aerosol particles by inductively coupled plasma atomic emission (ICP-AES) or mass spectrometry (ICP-MS) is described. This method is based upon the introduction of diluted aerosol into an ICP and the measurement of either the flash emission intensities of an atomic spectral line or ion intensities. A pulse-height analyzer is used for the measurement of the distribution of the elemental content. In order to calibrate the measuring system, monodisperse aerosols are used. The potentials of the method are shown by demonstrating the copper emission signals from the aerosols generated at a small electric switch, a study of the relation between the decreasing rate of particle number density and particle size, and measurements of calcium contents in the individual biological cells.
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Kunihiro Funasaka,Keiko Masumoto,Daichi Asakawa,Satoshi Kaneco 한국대기환경학회 2020 Asian Journal of Atmospheric Environment (AJAE) Vol.14 No.4
Long-term observational data for the size distributions and particulate chemical components have been summarized to understand the past and current particulate conditions in Osaka City. The positive matrix factorization (PMF) method was also applied to estimate the source changes. The observational data obtained using Andersen cascade impactors reveals that for the 40 years from fiscal year (FY) 1976 to 2015, there was a 70% reduction in PMfine (less than 2.1 μm of the aerodynamic diameter) and 76% reduction in PMcoarse (over 2.1 μm). These correspond to a 71% and 74% reduction in PM2.5 (particulate matter less than 2.5 μm in diameter) and PM10-2.5, respectively. From the continuous chemical measurements made in this study, we observed a more than 50% reduction in coarse particulate elemental carbon (EC), SO42-, NH4+, Zn, Pb, and Cd, commonly in residential and roadside areas, over the last 20 years. Similarly, the level of the fine particulate EC, Ca2+, Cl-, Zn, Mg2+, Pb, and Cd was reduced by more than 50%. Notably, the results of the particulate component analysis of ECfine show a typical reduction of 73%-79% for 20 years, and this is the main component contributing to the reduction of atmospheric particulate concentration. However, there seems to have been no apparent reduction of Vfine concentrations, SO42- fine showed a relatively low reduction of 19% to 26%, and NH4+ fine levels fell by 14% to 21% in 20 years. Since fine sulfate and ammonium have similar behaviors, ammonium sulfate is considered to be a secondary particle aerosol because of long-range transportation. The PMF analysis still estimates a high contribution rate of secondary particles, which is one of the current problems. In contrast, although vanadium is a minor element, it is likely to be generated from harbor areas with ships because they are susceptible to the prevailing sea breeze in summer. Therefore, in the future, it will be necessary to scrutinize and take countermeasures not only for long-range transportation but also for domestic sources.
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