巻号一覧
9 巻, 3 号
選択された号の論文の12件中1～12を表示しています
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田内 森三郎1940 年 9 巻 3 号 p. 91-93
発行日: 1940/09/25
公開日: 2008/02/29
ジャーナル フリーAnalyses on the results of marking experiments and also on the catch records, giving the number of fish for several body-wight classes, disclosed the survival rate of Seriola quinqueradiata TEMMINCK and SCHLEGEL to vary from •40 for young fish to •63 for adults, while the fishing rate was found to be •23.抄録全体を表示PDF形式でダウンロード (162K) -
田内 森三郎1940 年 9 巻 3 号 p. 94-96
発行日: 1940/09/25
公開日: 2008/02/29
ジャーナル フリーForm the results of marking experiments, as well as from the records of catch according to the several body-weight classes, the survival rate of Sccmber juponicus (HOUTTUYN) was estimated to be 40 for the age of from 2 to 3 years, and 21 for the age of from 3 to 4 years. it seems promissing to search for the unknown fishing grounds of larger fish aged above 4 years.抄録全体を表示PDF形式でダウンロード (175K) -
田内 森三郎1940 年 9 巻 3 号 p. 97-99
発行日: 1940/09/25
公開日: 2008/02/29
ジャーナル フリーWith the view of obtaining knowledge of the stock of Gadus macrocephalus TILESIUS, the results of investigations on the age and body-lengthe of landed fish, and of marking and fishing experiments were treated. It was shown that Gadus macrocephalus TILESIUS fished around Japan belongs to a closed stock, the survival rate of with was found to be 35. The fish which appeare on the coast of Chôsen amounts to 18% of the whole stock, and 23% of those fishes are caught there during one fishing season.抄録全体を表示PDF形式でダウンロード (197K) -
岡本 五郎三1940 年 9 巻 3 号 p. 100-102
発行日: 1940/09/25
公開日: 2008/02/29
ジャーナル フリーBased on the materials of the catch of “Katuo” landed at Kesennuma, Miyagi Pref. in 1939, which are grouped according to their dominant body-weights, an investigation was made on the composition of the fish. In Fig. 2 four characteristic groups A, B, C and D of the shoals are recognizable, which are in the ratios of 75:10:3:11 in catch, and the increase in the body-weight of each group during the fishing-season seems to indicate the growth of the fish in the respective group. From the point of view of forecasting the yearly catch, however, more detailed and continual knowledge of the conditions such as migrations of the four groups are wanted in future.抄録全体を表示PDF形式でダウンロード (222K) -
宇田 道隆1940 年 9 巻 3 号 p. 103-106
発行日: 1940/09/25
公開日: 2008/02/29
ジャーナル フリーBased on the data supplied from the fisheries-surveying boats, more than 50 in number, in the years from 1936 to 1939, the relations among the time of angling (t0), the duration of angling (T) and the catch of Katuo (n) were examined statistically.
Three maxima shown in the catch-curves (Fig. 1), i. e. the principal one dominating early in the morning (5-9 h. a. m. about after the sunrise), which covers nearly the half of the total catch in a day, the secondary one falling about after the noon, and the tertiary one in the evening before the sunset, are noticed. Those maxima and the exponential decay indicated in the general trend of the catch curves (Fig. 2) can be interpreted mainly as the results of the behaviour of the shoals of “Katuo, ” subjected to their feeding habit, besides the disturbance of the shoals due to fishing, etc.
As regards to T, the dominant value of the catch corresponds to 10-40 minutes and unto 80 minutes of T the catch increases with the increase of T, and then beyond 80 minutes the catch falls down rapidly.抄録全体を表示PDF形式でダウンロード (219K) -
安田 秀明1940 年 9 巻 3 号 p. 107-110
発行日: 1940/09/25
公開日: 2008/02/29
ジャーナル フリーIt is pointed out that there is a reason to doube AIKAWA and KONISI'S assumption on the exsistence of pairs of main and secondary year rings on the scale of Japanese sardine. Except fpr the first ring, which may be really of the secondary nature, each of the others seems to be an year ring.抄録全体を表示PDF形式でダウンロード (203K) -
黒木 榮一1940 年 9 巻 3 号 p. 111-114
発行日: 1940/09/25
公開日: 2008/02/29
ジャーナル フリーThe scale of Salvelinus fontinalis (MITCHILL) seemingly appears first in the posterior part of the body, the size and the number of circuli of the scale being the largest on that part, followed by the middle part and the anterior part comes the last, as.shown statistically in Figs. 1 and 2. The same can be concluded from the relation between the body and scale lengths, as represented in Fig. 4. The body length reaches 1 cm at the stage when the scale in the posterior part of the lateral line appears, while for the middle and anterior parts of the same, the appearance of the scale can occur at 2cm of the body length. Appearance of the scale is recognizable to strech faster above than below the lateral line (Fig. 3).抄録全体を表示PDF形式でダウンロード (153K) -
岡田 光世1940 年 9 巻 3 号 p. 115-116
発行日: 1940/09/25
公開日: 2008/02/29
ジャーナル フリーObserved temperature distribution in the neighbourhood of the inlet of drainage from Yumoto hot spring at the northe end of Lake Yunoko, Nikkô, was compared with the result of calculation, in which the problem was treated as stationary hat conduction through a medium having cross section and cooling surface varying from place to place.抄録全体を表示PDF形式でダウンロード (114K) -
岩田 義一1940 年 9 巻 3 号 p. 117-120
発行日: 1940/09/25
公開日: 2008/02/29
ジャーナル フリー魚肉を調味液と共に詰めた罐を沸騰する水にて加熱するとき、その温度は θe=100°C に上昇してゆく。その仕方は罐の形により定性的見当はつくが、以下に楕圓罐につき之を定量的に算出する。その結果は罐の中心温度をθ、長軸を2a, 短軸を2b, 高さを2c, 罐の内容の温度傳導率をk, 時間をtとするとき、充分時間がたてば次の關係が成立つ。ln(θe-θ)=-λkt+const.(1) λ=(π/2c)2+4/(a2-b2)μ, (2) μ=-0•3257+0•2572a+b/a-b-0•0076(a+b/a-b)2, 但し 2<a+b/a-b<6 (3)抄録全体を表示PDF形式でダウンロード (191K) -
谷 正二1940 年 9 巻 3 号 p. 121-122
発行日: 1940/09/25
公開日: 2008/02/29
ジャーナル フリーFor the action of amylase from the pyloric coeca of dog salmon, Oncorhynchus keta (WALBAUN), the optimum temperature lies at about 20°C (Fig. 1), while the optimum hydrogen ionconcentration at 7•0 of pH-value (Fig. 2).抄録全体を表示PDF形式でダウンロード (86K) -
深山 義道, 小坂部 勇1940 年 9 巻 3 号 p. 123-124
発行日: 1940/09/25
公開日: 2008/02/29
ジャーナル フリーTesting on the strength showed that shark leather is liable to be weakened if treated with hydrochloric acid, in order to scale, at temperature higher than 60°C. In scaling shark leather by means of hydrochloric acid, temperature must not exceed this limit, or better be maintained as low as 40 to 50°C for the practical purposes. As shown in Fig. 1 and 2, the larger the amount of hydrochloric acid used, the faster the scaling can be finished.抄録全体を表示PDF形式でダウンロード (100K) -
福永 範一1940 年 9 巻 3 号 p. 125-131
発行日: 1940/09/25
公開日: 2008/02/29
ジャーナル フリーInstead of chlorate, bromate was added together with sulfuric acid to bittern, and the bromine thus set free was dissolved in carbon tetrachloride. Potassium (or sodium) hydroxide given to this solution gave-rise to a mixture of potassium (or sodium) bromide and potassium (or sodium) bromate. The author determined quantities of sulfuric acid and carbon tetrach-loride necessary enough to carry on the above-mentioned procedure (Tables 1-3, Figs. 1-2). The effect of concentration of potassium (or sodium) hydroxide upon the yields of potassium (or sodium) bromide and potassium (or sodium) bromate was also studied (Table 4, Fig. 3).抄録全体を表示PDF形式でダウンロード (466K)
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