All issues
Volume 5 (1936 - 1937･･･
- Issue 6 Pages 341-
- Issue 5 Pages 277-
- Issue 4 Pages 219-
- Issue 3 Pages 143-
- Issue 2 Pages 77-
- Issue 1 Pages 1-
Volume 5, Issue 4
Displaying 1-11 of 11 articles from this issue
- |<
- <
- 1
- >
- >|
-
Masao KIMATA1936 Volume 5 Issue 4 Pages 219-223
Published: November 10, 1936
Released on J-STAGE: February 29, 2008
JOURNAL FREE ACCESSKENDALL, (1, 2) DEBORD, (3) BOEHNCKE, (4) AUBER et COLIN, (5, 6) JONES, (7, 8) KENDALL, and KEITH, (9) Glenn, (10) BERMAN and RETTGER, (11) KENDALL, DAY and WALKER, (12) and MEYERHOF and BURK (18) have reported on the effects of carbohydrates upon nitrogenous metabolism by bacteria.
But so far as I am aware, nothing is known of the relation between the decomposition of fish muscle by bacteria and the compounds in question. The present paper embodies my observations on the effects of carbohydrates upon the rates of the decomposition of fish muscle by bacteria, and on the growth rates of bacteria in the fish muscle media containing carbohydrates.View full abstractDownload PDF (307K) -
I. Teh Rectangular Membrane Immersed in WaterYositada TAKENOUTI1936 Volume 5 Issue 4 Pages 224-226
Published: November 10, 1936
Released on J-STAGE: February 29, 2008
JOURNAL FREE ACCESSDownload PDF (169K) -
II Trap Nets set on the Fishing Grounds under Strong Tidal. CurrentsHideaki MIYAMOTO1936 Volume 5 Issue 4 Pages 227-234
Published: November 10, 1936
Released on J-STAGE: February 29, 2008
JOURNAL FREE ACCESSBy the same method as used in the previous report, the deformation of amber-fish trap nets under various currents was examined with two models, of which the original nets are as shown in Figs. 1 and 2.
The photographs reproduced in Figs. 4 and 5 show the forms of the two nets respectively, and in each, each column, those under the currents in several directions prevailig in each fish-ing ground (Fig. 3), while from top to bottom in each column, at the current velocities of 0, 1/4, 1/2 and 1 mile/hour respectively.View full abstractDownload PDF (2062K) -
Michio Uno1936 Volume 5 Issue 4 Pages 235
Published: November 10, 1936
Released on J-STAGE: February 29, 2008
JOURNAL FREE ACCESSWith 688 samples out of Germo germo which were landed at Misaki barbour in June 1936, the age was determined (Table 1). The body length and body weight were measured on 200 indivi uals of them (Table 2, and Figs. 1 and 2).View full abstractDownload PDF (67K) -
Mititaka UDA1936 Volume 5 Issue 4 Pages 236-238
Published: November 10, 1936
Released on J-STAGE: February 29, 2008
JOURNAL FREE ACCESSFrom the records of five years from 1931 to 1935, the writer can follow two loci of the fishing centre of “Sanma”, corresponding to the two branches of Oyasiwo Cold Current (Figs. 1 and 2).
Of the two loci, the coastal one appears from October, while the off-shore one from Sep-tember. In autumn the fishing centre lies at the southernmost head of cold current, usually in the zone of temperature of 16 to 18°C, or is located slightly to the east of it, which is supposed to form a convergent cyclonic vortex. The shoals of “Sanma” migrate in the direction of maximum gradient of surface temperature or that of axial line of the elliptic curves representing equally dense catches. According to the fluctuation of the intensity of two branches of cold current, the fishing at each of two centres relatively grows or decays. Coming down to the region off Kinkwazan, the off-shore fishing centre stays there for a comparatively long period, decaying gradually, while the coastal centre is, to the contrary, gradually animated.View full abstractDownload PDF (238K) -
Morisaburô TAUTI1936 Volume 5 Issue 4 Pages 239-241
Published: November 10, 1936
Released on J-STAGE: February 29, 2008
JOURNAL FREE ACCESSThe LEA'S mortality estimation method was extended for extended for estimating the diminishing rate of stock.View full abstractDownload PDF (179K) -
Weight of Contents and the Tones of Salmon CansMituyo OKADA, Katumi YAMAGUTI, Masakiti SINODA1936 Volume 5 Issue 4 Pages 242-244
Published: November 10, 1936
Released on J-STAGE: July 08, 2008
JOURNAL FREE ACCESSThat the pitch of partial tones emitted from 1/2 Lb salmon cans has a negative correlation to the weight of net content of cans is ascertained. The correlation is, however, not very high owing to the variation of the weight of emptied cans, which is itself negatively correlated with the pitch of tones. The partial correlation c_??_efficients are significant.View full abstractDownload PDF (177K) -
Yohei USUI, Terutake SUKEGAWA, Masanori MATUMOTO1936 Volume 5 Issue 4 Pages 245-246
Published: November 10, 1936
Released on J-STAGE: February 29, 2008
JOURNAL FREE ACCESSImportant as it is, the iodine content of sea-weeds has not drawn much attention as to its seasonal variations. The material, on which our study is based, was obtained from the coast of the Ibaraki Prefecture, comprising two species, viz., Turbinaria fusiformis YENDO and Ecklonia bicyclis. In the accompanying figures the iodine content of the sea-weeds is plotted against months, that for the months of 1935 being each represented by a cross and that for those of 1936 by a circle. Fig. 1 shows that the iodine content of Turbinaria fusiformis reaches its maximum in February to March when the reproductive organ of this sea-weed ripens. As shown in Fig. 2 the maximum of iodine content of Ecklonia bicyclis is not well defined but lies around December and January when the reproductive organ of this sea-weed is very likely to ripen in the district in question.View full abstractDownload PDF (119K) -
Kiyohide MIYOSI, Ikuro HIROSE1936 Volume 5 Issue 4 Pages 247-248
Published: November 10, 1936
Released on J-STAGE: February 29, 2008
JOURNAL FREE ACCESSBased on the sampling records for pink-salmon cans, statistical relations among the relative s'gnificance of inspected items were studied.View full abstractDownload PDF (136K) -
Itirô MIYAZAKI1936 Volume 5 Issue 4 Pages 249-254
Published: November 10, 1936
Released on J-STAGE: February 29, 2008
JOURNAL FREE ACCESSSmall bivalves of the genus Corbicula are widely used for human food in Japan with some medcal meaning, thus, they have some commercial importance, and in some cases they are the object of cultivation being transplanted to the place where they are not found. Their habitat is either fresh or brackish water. The chief purpose of the present study is to elucidate their reproduction which shows different types according to ecological conditions. 12 species occurring from the North, Hokkaido, to the South, Formosa, may be grouped in view of their habitats and sexuality into 3 categories, as follows :
Group I. Fresh water-Monoecious-incubatory.
Group II. Fresh water-Dioecious-probably non-incubatory.
Group III. Brackish water-Dioecious-probably non-incubatory.
Here mainly the description of the first group represented by C. leana PRIME is given. In the species, which is incubatory in its habit, inner gill-lamellae are differentiated structurally for marsupial purpose. Its early larva is furnished with a velum which, being useless for swim-ming, is much better in its development compared with that of such species as Sphaerium. Post-larva with D-shape shell when compared to the same stage of marine bivalves shows more advanced condition in its general organization, that is, the said larva of the present species is already furnished with well developed functional gills, foot and byssus thread. The larva has no stage of parastic life.
With regards to the other groups, although their study is not completed yet, it may be conjectured from anatomical and histological observations so far carried out at many times in the year that they are non-incubatory. Further details will be published in the future.View full abstractDownload PDF (649K) -
III. Pneumatic Vacuum TesterKenzo TOMIMASU1936 Volume 5 Issue 4 Pages 255-261
Published: November 10, 1936
Released on J-STAGE: February 29, 2008
JOURNAL FREE ACCESSIn his previous report, the author has described the “Dial Vacuum Indicator” showing that the measurements by the instrument are fairly accurate and average deviations from those obtained by the Bourdon tube type vacuum tester ordinary used to-day are below 2.0 inches in vacuum.
Usage of the “Dial Vacuum Indicator” is very simple and accordingly the measuring is conducted very speedily, but it must be taken into consideration that with inceasing of occa-sions of using the wear of the mechanical gears of the indicator will become considerably large. In industrial usage it is desired that the accuracy of the measurement is to be higher and besides the wearing will be limited as small as possible.
The author has devised a new vacuum testing apparatus utilizing the pnenmatic micro-meter which is operated with no direct contact and releases us free from the care of wearing of mechanical gears.
Using this pneumatic apparatus the vacuity of pink-salmon 1 lb. cans circulated in market were measured and desirable results have been obtained.
The mean value of errors of the measured vacuities of all 48 cans tested by this apparatus was 31•1 mm (12•2 in) in vacuum and the consumption of air comparatively small as about 0•28m3/min (10ft3/min) at atmospheric pressure and as the apparatus was assured that it would be utilized industrially in general.View full abstractDownload PDF (682K)
- |<
- <
- 1
- >
- >|