巻号一覧
24 巻 (1963)
- 3-4 号 p. 63-
- 1-2 号 p. 1-
24 巻, 3-4 号
選択された号の論文の6件中1～6を表示しています
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本谷 勲, 小堀 和夫1963 年 24 巻 3-4 号 p. 63-71
発行日: 1963/11/30
公開日: 2009/10/16
ジャーナル フリーSince water pollution resulting from human activities are neither temporal nor partial in these days, limnologists and ecologists will inevitably be to study the waters under such artificial effects. Metabolic changes of substances by microbes are the most important process among natural purifications of organic pollutions, because most organic matters are decomposed by microbial activities. The authors consider the relationship between oxygen consumptions of both bacteria and protozoa, as well as their increases based on several assumptions. They also explain that BOD (Biochemical Oxygen Demand) test which has widely been used as an indicator of polluted water closely relates to metabolism of both bacteria and protozoa.抄録全体を表示PDF形式でダウンロード (731K) -
金子 光美1963 年 24 巻 3-4 号 p. 72-78
発行日: 1963/11/30
公開日: 2009/10/16
ジャーナル フリー木曽川中流の大腸菌群分布を醗酵管及びデスオキシコレート寒天培地で調べるとともに両法の比較を行つた。
中津川市から名古屋市水道局朝日取入口までの地点では, 犬山市にあるT社工場の廃液による汚染がもつとも顕著であつた。この廃液のために4km下流の草井ではまだ左岸の汚染度が高く15km下流の笠松では均等化していた。
醗酵管法によるMPNも汚染の傾向をよく示すが, はつきりした差異を示さない場合もあつた。デスオキシコレート寒天培地による方法はMPNの74%の値を示したが, 汚染の状況はMPNよりもよく示し試験操作の簡易化と相侯つて河川の大腸菌群試験の一方法であると思われる。抄録全体を表示PDF形式でダウンロード (562K) -
鈴木 静夫1963 年 24 巻 3-4 号 p. 79-83
発行日: 1963/11/30
公開日: 2009/10/16
ジャーナル フリーThe standing crop and the activity of lake inhabiting bacteria were observed in Lake Yamanaka-ko, Yamanashi prefecture. The amount of bacteria of water and mud differs with different basins of one lake. The amount of organic substances in lake bottoms seems to be the most essential factor to decide the productivity of bacteria.
The vertical differences in the activity of water bacteria were observed by culture method. The multiplication of bacteria occurred at the surface and the bottom layer in winter, and at the 24 m layers in summer.
The vertical differences of bacterial activity were observed in bottom mud. The activity is very high in the surface layer of mud.抄録全体を表示PDF形式でダウンロード (403K) -
加藤 武雄1963 年 24 巻 3-4 号 p. 84-93
発行日: 1963/11/30
公開日: 2009/10/16
ジャーナル フリーThe Oguni River, which is one of the important tributaries of the Mogami River, starts from the western side of the Ou Mountain Range.
As is often the case with the rivers near the copper mine, the waters of some tributaries in the left side are influenced by the mineral deposits in the catchment area. Such is not the case with the branches in the right side.
So far as the main stream is concerned, the water quality undergoes a remarkable change after joined by the waters issuing from the hot springs in the drainage basin. According to the observations at the fixed station, there exists a linear relationship (positive correlation) between the contents of SO42- and Cl-. Generally speaking, the increase of the water level tends to decrease the concentrations of the chemical constituents. In the case of melt water, the circumstances are different from this.抄録全体を表示PDF形式でダウンロード (749K) -
加藤 武雄1963 年 24 巻 3-4 号 p. 94-103
発行日: 1963/11/30
公開日: 2009/10/16
ジャーナル フリーThe Shira-kawa River is one of the most important tributaries in the upper reaches of the Mogami River. This drainage system starts from Mt. Iide and is jointed by the Matsu-kawa River at Toyoda, Nagai City. In this paper, the geochemical features of the river are reported. The results are summarized as follows :
1. As for the water quality of the whole drainage system, samples taken from various stations show neutral reaction and, on the whole, they are poor in dissolved substances.
2. So far as the water quality of the trunk river is concerned, the chemical oxygen demand and the contents of chloride, sulfate and silicate ions increase with the increase of distance from its origin.
3. After joined by the Koshira-kawa River and the Hagiu-gawa River, the water quality of the main stream undergoes an abrupt change.
4. The examination of the analysed data at the Toyoda station revealed a linear relationship between calcium ion and each of chloride ion and bicarbonate ion. Regarding dissolved iron and silicate ion, the concentration peak occurs in April coincident with rapid thaws at the same observing station. Such is not the case with other mineral contents.抄録全体を表示PDF形式でダウンロード (731K) -
加藤 武雄1963 年 24 巻 3-4 号 p. 104-113
発行日: 1963/11/30
公開日: 2009/10/16
ジャーナル フリーThe Niu-gawa River, a tributary of the Mogami River, starts from the Funagata Volcano of the Ou Mountain Range.
Influenced by the mineral springs and the mineral deposits distributed in the drainage basin, the waters of the upper reaches are characterized by the large contents of SO42- and Ca2+. Throughout the drainage system, Cl- is regarded as a minor constituent of the dissolved substances. As for the water quality of the trunk river, the concentrations of SO42- and Ca2+ and the evaporation residue tend to decrease with the increase of distance from its origin respectively. According to the monthly observations in the fixed station of the main stream, the negative correlation is found between the water level and each of SO42-, Ca2+, Mg2+ content and the alkalinity.抄録全体を表示PDF形式でダウンロード (809K)
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