1 0 0 0 OA 鹿角市でのツキノワグマによる人身事故
- 著者
- 成田 祥夫 河原 淳
- 出版者
- 森林野生動物研究会
- 雑誌
- 森林野生動物研究会誌 (ISSN:09168265)
- 巻号頁・発行日
- vol.20, pp.8-12, 1994 (Released:2017-10-03)
At about 4:30 a.m. on August 18, 1991, Mrs. Ueda (67 years of age) was attacked by a sole black bear Ursus thibetanus on a mountain path in Kazuno, Akita. As Mrs. Ueda was taking a mountain path which is a shortcut to the field, she was suddenly attacked by the black bear and injured on the left side of her face. Two important safety factors had been overlooked. In spite of warnings of frequent sightings of bears Mrs.Ueda took the mountain path. A garbage dump, Which is known to attract bears, had been made near the field.
1 0 0 0 OA 瀬戸内海沿岸部における大気エアロゾル中の有機態窒素
- 著者
- 中村 篤博 成田 祥 金澤 啓三 植松 光夫
- 出版者
- 日本エアロゾル学会
- 雑誌
- エアロゾル研究 (ISSN:09122834)
- 巻号頁・発行日
- vol.32, no.1, pp.4-13, 2017-03-20 (Released:2017-04-03)
- 参考文献数
- 30
Chemical compositions and particle number densities of atmospheric aerosols were measured continuously in the coastal area of Seto Inland Sea during the spring of 2015. The mean concentrations of NH4+, NO3-, and water soluble organic nitrogen (ONws) were 1.6, 0.85, and 0.28 μg N m-3, respectively in total sampling mode. NO3- existed in both fine and coarse modes, while NH4+ and ONws existed primarily in fine mode. On the days of normal atmospheric conditions, the amount of ONws contributing to the total nitrogen was about 14% N in both fine and coarse sampling modes. This ratio was equivalent to the amount of NO3- content in fine mode and NH4+ in coarse mode. On the days with polluted atmospheric conditions, the amount of ONws contributing to total nitrogen was about 9.3% N in fine mode and about 5.0% N in coarse mode. This ratio was equivalent to the contributions of NO3- in fine mode and NH4+ in coarse mode. Dry deposition fluxes of particulate NH4+, NO3-, and ONWS in the area were 280, 660, and 83 μg N m-2 day-1, respectively. The flux of NO3- was more effective than any other nitrogen compounds, since the deposition rate depends upon a size distribution. The dry deposition of ONws accounted for about 8.1% of the total nitrogen dry deposition. Thus, ONWS cannot be ignored when considering the nitrogen budget and cycles in this area.