日本水産学会誌
Online ISSN : 1349-998X
Print ISSN : 0021-5392
ISSN-L : 0021-5392
6 巻, 4 号
選択された号の論文の10件中1~10を表示しています
  • Yositada TAKENOUTI
    1937 年 6 巻 4 号 p. 167-170
    発行日: 1937/11/15
    公開日: 2008/02/29
    ジャーナル フリー
  • 第一報ベニマス (Oncorhynchus nerka (WALB)).
    佐藤 六治
    1937 年 6 巻 4 号 p. 171-174
    発行日: 1937/11/15
    公開日: 2008/02/29
    ジャーナル フリー
    In the fishing season, 1936, tagging experiments were conducted by the official (Bureau of Fisheries and Hokkaidô Fisheries Experimental Station) and the private agencies relating to salmon-industry of northern north Pacific. This paper reports on the results of these experiments.
    The red salmons 4 in number traversed new migratory courses. Of the 2 of them tagged at Cape Kronotskii on the east side of Kamchatska Peninsula, migrating round Cape Africa and Cape Ozernoi, one each was recaptured at Russakovka and Khalyulya in Karaginskii District. The third fish tagged in the Gulf of Kamchatska, took a long way to Willienan in Olyutorskii District. The above three migrated northward or northeastward. The fourth fish tagged at Willienan migrated south-westward and was recaptured at Khalyulya.
  • 王 貽観
    1937 年 6 巻 4 号 p. 175-178
    発行日: 1937/11/15
    公開日: 2008/02/29
    ジャーナル フリー
    On the basis of analysing the materials landed at the Fish Market of Hirosima City, some nature of the stock of Pagrosomus major fished in waters of Setonaikai, the Inland Sea of Japan, was studied.
  • 瀬戸内海産と外海産(宮崎縣)との比較(豫報)
    海老名 謙一
    1937 年 6 巻 4 号 p. 179-181
    発行日: 1937/11/15
    公開日: 2008/02/29
    ジャーナル フリー
    The measurement of standard length as well as body weight (Fig. 1) and examination of the scale (Fig. 2) of the specimens of Pagrosomus major (T. & S.) appear to point to the con-clusion that those found inside the Inland Sea of Japan constitute an almost distinct stock from those caught outside the sea area in question (Miyazaki). The former group is inferior to the latter in the growth rate but superior to the latter in the distinctness of the annual rings of the scale.
  • 青木 克
    1937 年 6 巻 4 号 p. 182-184
    発行日: 1937/11/15
    公開日: 2008/02/29
    ジャーナル フリー
    The effects of monohydric alcohols (methylalcohol (Fig. 1), ethylalcohol (Fig. 2), iso- propylalcohol (Fig. 3)), dihydric alcohol (ethylene glycol (Fig. 4)), acetone (Fig. 5), formalin (Fig. 6), and carbolic acid (Fig. 7) on the viscosity of 0.5% extract of Gloiopeltis furcata ( ?? ), G. tenax ( ?? ), Iridaea pulchra (x), and Chondrus sp. (+) were measured by the previously reported method.
  • 鹿野 捷爾, 山村 彌六郎
    1937 年 6 巻 4 号 p. 185-186
    発行日: 1937/11/15
    公開日: 2008/02/29
    ジャーナル フリー
    3, 000 volts were applied between the gill and the tail of fish to kill it, and afterwards the hardness of the muscle of fish was measured at intervals by TAUTI's instrument, in order to infer the rate of putrefaction. With Carassius auratus and Cyprinus carpio, thus killed by electric shock, the hardness of the muscle was proved to be always higher than the similar muscle used for control, of which the fish was killed by cutting nerve centre (Fig. 1). Among the carp, to each of which the said potential was applied each for 20, 60, 90 and 150 sec., that for 60 sec. maintained the highest hardness of all (Figs. 2 and 3).
  • 井上 直一
    1937 年 6 巻 4 号 p. 187-195
    発行日: 1937/11/15
    公開日: 2008/02/29
    ジャーナル フリー
    The drying of the cod and cuttlefish by the heated wind has been studied as a problem in physics. The results obtained by the present author are summarized as follows:
    1) When the fish muscle is exposed to the air for a sufficiently long time at the room temperature, the amount of the water loss of the muscle is always constant, namely 79% of the initial weight for the cod and 73% for the cuttlefish, irrespective of the relative humidity of the air, if it is less than 60%. They are about the same value as those initial water content which were obtained by the chemical method using toluen.
    2) A very complicated relation exists between the amount of water remained in the fish muscle and the time required for its drying. But it can be assumed approximately, that until the water decreases to the half of the initial quantity, the relation is represented by the fol-lowing equations derived by Dr. FUJIWHARA and Dr. TAUTI:-
    ρ/∂t=KΔp, K(∂ρ/∂N)s=γEρs and E=F'-f,
    where ρ is, the water density in the fish muscle at time t, S the suffix referred to the surface layer of the fish mucle, N the inward normal at the surface, F' the maximum vapour tension of the aqueous solution in the surface layer at the temperature of it, f the vapour tension of the water contained in the wind, K the coefficient of diffusion of the water in the fish muscle, γ the coefficient referred toevaporation of the water at the surface of the muscle. K is esti-mated at about 0.01-0.03 cm2/hr. and γ 0.005 when E is measured in mm/Hg.
    3) The upper limit of the temperature to which the above equation of diffusion can be applied is about 40°C, and the lower limit of the humidity is about 40% in the case of the temperature 30°C. Above 40°C, a peculier condition which accelerates the velocity of drying seems to occur in the fish muscle, and below 40%, a condition which decreases the velocity of drying seems to appear in the surface layer of the fish muscle, in the advanced stage of drying. Even if the temperature and humidity are within the above-mentioned ranges, the velocity of drying gradually increases when the water is evaporated more than half of the initial quantity.
  • 上野 清, 田代 爲一
    1937 年 6 巻 4 号 p. 196-200
    発行日: 1937/11/15
    公開日: 2008/02/29
    ジャーナル フリー
    Durch Verseifung des epiphasischen Esters aus Hypodermis von Paralithodes camtschaticus (TILESIUS), sowie des hypophasischen Esters aus Panzer desselben, erhielt man einen krystal-isierte Farbstoff, der auf dem Grund des Schmerzpunktes (240-241°C, Korr., im evakuierten Röhrchen), der Wcllenlänge bei der maximalen Absorption (500 mμ in. Pyridin), u.s.w., als Astacin identifizierbar ist. Der hypophasische Ester aus Panzer darf als dem Ovoester ent-sprechend angesehen werden, den schon R. KUHN und E. LEDERER aus den Eier von Actacus gammarus L. erhalten haben.
  • 高野 政吉
    1937 年 6 巻 4 号 p. 201-208
    発行日: 1937/11/15
    公開日: 2008/02/29
    ジャーナル フリー
    I. Changes of the Characteristics of Oil during the Process of Drying and Storing Sardine.
    The fatty oils of the samples obtained in the course of drying and subsequent storing of sardine, were examined by extraction with ether, acetone, ethyl acetate, and acetic acid res-pectively. Thus, the author concluded that the diminution of the quantity of extractablematter should have been caused by an autoxidation followed by polymerisation of oil. More-over, a suggestion was given, that the autoxy-polymerisation product might have different solubilities for above solvents, depending on the grades of oxidation or polymerisation. The ethyl acetate extracted the neutral oil more rapidly than the other solvents did, but the oxi-dation product of oil was hardly extracted, though easily by glacial acetic acid. Analysis of ether-extracted oil showerd with lapse of storing time of sardine, that the acetyl value, refractive index and acid value increase, while the iodine value decreases, and that the colour darkens and also it becomes viscous. The content of free acid quickly increases during drying process, where much moisture still remains in sardine, and it seems that acrolein is produced which is presumably influenced by exposure to light, and that finally, the volatile decomposition gradually takes place with the progress of oxidation.
    II. Changes of the Components of Oil during the Process of Drying and Storing Sardine.
    The fatty acids obtained from the ether-extracted oils, which were described in the pre-vious paper, gave considerable amount of brownish substances which were insoluble in ether and petroleum-ether respectively, while extremely pale fatty acid was obtained from each pet-roleum-ether-soluble portion. Therefore, it was suggested that the darkening of the ether-extracted oil was mainly due to these insoluble matters which might be the oxidation product of oil. The petroleum-ether-soluble fatty acids were then separated into solid and liquid acids respectively, and from the latter, the respective bromides insoluble in ether and petroleum-ether were prepared, and they were subsequently analysed. Eventually, the following conclu-sion was given. The oxidation mainly occurs in highly unsaturated fatty acid of the oil, and most of other acids still remain unchanged. The storing experiment during 100 days showed that the free acid of oil amounted to 15%, and that about 20% of the fatty acid were oxidised. Hence the neutral oil which remains unchanged should be only 65% of the original oil.
  • 富枡 建造, 稲葉 忠衛, 伊集院 兼清
    1937 年 6 巻 4 号 p. 209-213
    発行日: 1937/11/15
    公開日: 2008/02/29
    ジャーナル フリー
    Accuracy of the measurement of the vacuity of full cans by the elastic deflexion of their ends is greatly affected by the irregularity of the thickness of the tinplate, (1) therefore the authors have made this experiment to know of what grade the irregularity of the thickness of the tinplate of present-day home product is.
    With a dial thickness gauge four kinds of tinplate, (1) black annealed plate, (2) coldrolled plate, (3) finished tinplate 95 lb. base and (4) 100 lb. base, were measured of their thickness at every point 2 cm. apart lengthwise and breadthwise as shown in Fig. 1 (a).
    Partial distribution of irregularity of the thickness of each one sheet and irregularity of the thickness between sheets of the same kind were calculated from the measurements and the results are as follows : both irregularities above stated are equally about 2% for blackplate and coldrolled plate and about 1% for both finished tinplates of 95 lb. and 100 lb. base as shown in Table 1.
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