巻号一覧
6 巻, 6 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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Tasae KAWAKAMI1938 年 6 巻 6 号 p. 283-286
発行日: 1938/03/15
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (206K) -
Takeo ÔYA, Masao KIMATA1938 年 6 巻 6 号 p. 287-290
発行日: 1938/03/15
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (234K) -
IV. The Rates and the Velocities of Decomposition of the Extractive Matter of Meat of differently Aged Aquatic AnimalsMasao KIMATA1938 年 6 巻 6 号 p. 291-295
発行日: 1938/03/15
公開日: 2008/02/29
ジャーナル フリーSo far as I am aware, little is known of the relation of the age of an animal to the rate and the velocity of the bacterial decomposition of it. According to HUNTER, (1) in salmon, which are actively feeding when caught, enzymic decomposition as well as bacterial decomposition may take place. It has been found that immature salmon caught on the feeding ground, with alimentary tract full of feed, is decomposed in a manner different from the mature salmon caught on the spawning migration after the fish have ceased feeding, and when the alimentary tract is empty. In the immature feeding salmon enzymic decomposition accompanies bacterial spoilage, causing a softening of the belly wall and disintegration of the viscera of the fish. In mature salmon caught on the spawning migration, the alimentary tract is sterile since no food is present and invasion by bacteria in such fish is solely from the outside inward. After the salmon have reached the spawning grounds, the type of spoilage again differs from that of the mature migratory salmon even though the bacterial flora in both are almost identical.(2) The chemical composition of the meat may vary with time in the life-cycle of the animal. Therefore, it seems that the rate and the velocity of the bacterial decomposition depend also upon the time in the life-cycle of the animal at which it is caught.
The present paper embodies my observations on the rates and the velocities of the bacterial decomposition of extractive matter of meat of aquatic animals of different ages, and on the growth rate of bacteria in the solution of the extractive matter.抄録全体を表示PDF形式でダウンロード (151K) -
宇野 道夫1938 年 6 巻 6 号 p. 296-298
発行日: 1938/03/15
公開日: 2008/02/29
ジャーナル フリーBy the same method as used in the previous report I. 1, 305 individuals were measured. Results demonstrate the following facts.
1) Female is superior to male in sex ratio, namely the former 65% and the latter 35%.
2) The maturity is nearly the same compared with the previous report.
3) Shoals are com ?? osed of the 6 age groups of 3 to 8 years old in the fishing ground of Hokkaidô, and 8 age groups of 3 to 10 years old in that of Niigata.
4) A specific body length was back-calculated from the distance from the centre of a vertebra to the first winter ring which is formed on the surface of vertebra, as shown in figure. 1. Following results are obtained.
Prin ?? pal mode shows 9•1-9•5cm in Hokkaidô Pref. and 8•6 ?? 9•0cm in Niigata Pref., hence, the author considers that the stocks in both fishing grounds are not of a single origin.抄録全体を表示PDF形式でダウンロード (110K) -
カラフトマス(Oncorhynchus gorbuscha (WALB.))佐藤 六治1938 年 6 巻 6 号 p. 299-304
発行日: 1938/03/15
公開日: 2008/02/29
ジャーナル フリーEighteen fishes traversed new migratory courses. One fish, tagged at Willienan in Olyu-torskii District, was recaptured at Gulf Kamchatskii. Of the five fishes, tagged at Sikotan Is. in the south-east sea of Hokkaido, three were recaptured on the west coast of Kamchatka (Utka, Icha) and the other two at Okhotskii District (Okhotsk, Ulya). Of the rest 12 fishes tagged at the middle Kurile Islands (Sinsiru, Tirihoi), the 11 fishes were recaptured at the west coast of Kamchatka (Utka, Vorovskaya, Muisovaya, Oblukovina, Opala) and the last one was recaptured at Hinode-gawa in the east of Paramusiro Is.抄録全体を表示PDF形式でダウンロード (480K) -
岡部 五郎1938 年 6 巻 6 号 p. 305-307
発行日: 1938/03/15
公開日: 2008/02/29
ジャーナル フリーWith two models of “Ankô-ami” (Fig. 1), constructed according to TAUTI's principle of model-net construction, it was studied how the shape, especially the height of the mouth, is varied with the velocity of current against the net. It was known that the net is operated in practice with the current of the velocity, at which the net sweeps the largest volume of water per unit time.抄録全体を表示PDF形式でダウンロード (877K) -
安田 秀明1938 年 6 巻 6 号 p. 308-310
発行日: 1938/03/15
公開日: 2008/02/29
ジャーナル フリーA set of parallelly doubled cords was fixed firmly at its upper end to a rigid clamp and loaded by a heavy body, weighing W kg with the moment of inertia K, at its lower end. From the period of tortional vibration, T, the value of n, n=4πlK/(T2r3•2), where l and r are respectively the length and the radius of the single cord, was calculated as the equivalent of the modulus of simple rigidity of the cord (Table 2), which varies slightly with the applied load.抄録全体を表示PDF形式でダウンロード (142K) -
IV. 大敷網・大謀網及び落し網宮本 秀明1938 年 6 巻 6 号 p. 311-324
発行日: 1938/03/15
公開日: 2008/02/29
ジャーナル フリーBy the same method as used in the previous report, the deformation of amber-fish keddle nets and trap net under various currents was examined with four models, of which the original nets are as shown in Fig. 1-4.
The photographs reproduced in Figs. 6-9 show the deformation of these nets under various currents.抄録全体を表示PDF形式でダウンロード (2539K) -
吉村 信吉1938 年 6 巻 6 号 p. 325-326
発行日: 1938/03/15
公開日: 2008/02/29
ジャーナル フリーDuring the summer of 1937, the writer made hydrographical observations of two enclosed bays by sand spits, i.e. Kumihamawan (20m deep) and Yosyanaikai (14m deep), and of a brackish lake Hanareko (6m deep) which are situated on Japan Sea coast of Kyoto Prefecture. Channels connecting those bays and the lake with Japan Sea are no more than 1m deep. The salinity of enclosed bays is nearly equal to that of the coastal water of the sea except the surface layer, while Hanareko belongs to the oligohaline lake. They are thermally well-stratified during the summer. Their deep strata are anaerobic and contain a moderate amount of hydrogen sulphide. The bottoms of their deep portions are covered by jet black mud.抄録全体を表示PDF形式でダウンロード (145K) -
岡田 光世1938 年 6 巻 6 号 p. 327-333
発行日: 1938/03/15
公開日: 2008/02/29
ジャーナル フリーOwing to the opening and enlargement of several channels connecting four lakes, Mikata, Suigetu, Hiruga and Kugusi, Hukui Pref., either directly or indirectly with Japan Sea, sea water has creaped into the bottom layers of the lakes Hiruga and Suigetu, the deepest two, accompanied by the changes in physical conditions of lake waters. In the present report, the rate of inflow of sea water as well as the rate of production of H2S in lake Suigetu is estimated from the observational data for temperature, salinity and hydrogen sulphide supplied by the Hukui Fisheries Experimental Station for the years of 1934 and 1935.抄録全体を表示PDF形式でダウンロード (496K) -
花岡 資1938 年 6 巻 6 号 p. 334-340
発行日: 1938/03/15
公開日: 2008/02/29
ジャーナル フリー1. Carring out the determination of sugars after HAGEDORN and JENSEN but by en'arging the original scale by ten times, reported HANES that in the case of glucose the relation between the concentration of sugar and the amount of ferricyanide consumed is represented by two straight lines which cross each other at the point corresponding to about 2mg./5 c.c. of sugar. But after repeated experiments the present author found that the relation can be expressed by one sfraight line in whole range of concentration (0•5-3•5mg./5 c.c.) and this also hold good of fructose and xylose, where 1 c.c. of N/100 thiosulfate is equivalent to 0•336mg. of glucose, 0•338mg. of fructose and 0•305mg. of xylose.
2. Influence on this method of some substances, often met with in a biochemical research, was examined and the procedure to estimate sugars in the presence of protein, pepton, creatin or creatinin as an interfering substance was given. Urea which is possible to cause a large error in copper method, had no effect on this estimation.
3. The amount of ferrieyanide (T ?? ) reduced by glucose of a certain concentration can be given by the equation
Tt=T-(T1e-k1t+T2e-k2t),
where t is time of heating, T is the value of Tt when t=∞, T1+T2=T, and k1 and k2 are constanst. Hence this reaction can be said to be composed of two monomolecular reactions. Then T1 and T2 are respectively the limiting amounts of ferricyanide consumed in these reactions. As shown in Table 5, which gives the values of these terms for various concentration of sugar, T1 is proportional to the amount of sugar, T2 and k1 are nearly constant while k2 increases slightly with sugar concentration. These facts lead us to the assumption that the one of these two reactions, which has velocity constant k1, is oxidation of glucose and the other of which the velocity constant is k2, an autodecomposition of ferricyanide caused by the presence of glucose.
The actual consumption of ferricyanide amounts three times as much as that expected when glucose is oxidized only to gluconic acid.抄録全体を表示PDF形式でダウンロード (506K) -
奥野 博1938 年 6 巻 6 号 p. 341-342
発行日: 1938/03/15
公開日: 2008/02/29
ジャーナル フリーBy the same method as used in the previous report, the following results were obtained:-(1) The total amount of ice crystals has no connection with the velocity of refrigeration though their size is affected. (2) The size and orientation of the cavities made in the fish muscle by ice crystals are not influenced by the pressure exerted on the fish muscle in freezing. (3) The size of cavities formed in the dried fish muscle is smaller than that formed in the fresh muscle. (4) The size of ice crystals seems to depend on the velocity of crystal growth relative to that of formation of crystal nuclei.抄録全体を表示PDF形式でダウンロード (143K)
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