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Volume 7 (1956 - 1957･･･
- Issue 4 Pages 347-
- Issue 3 Pages 179-
- Issue 2 Pages 69-
- Issue 1 Pages 1-
Volume 7, Issue 1
Displaying 1-8 of 8 articles from this issue
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H. Arakawa1956 Volume 7 Issue 1 Pages 1-6
Published: August 20, 1956
Released on J-STAGE: December 11, 2012
JOURNAL FREE ACCESSAn increasing annual rainfall in Japan is statistically discussed. This variation in rainfall was paralleled with hydroelectric potential output data and flood damages in Japan, in the long run. Finally, a relationship between the rainfall and the eleven-year sunspot cycle is tested, although it is concluded the eleven-year sunspot cycle is of little importance. A hypothesis of an inerease trend of water vapour in the atmosphere for a possible cause of the generally warm and rainy years on the world-wide scale is suggested.View full abstractDownload PDF (726K) -
T. Fujita1956 Volume 7 Issue 1 Pages 8-28
Published: August 20, 1956
Released on J-STAGE: December 11, 2012
JOURNAL FREE ACCESSThe purpose of this study is to investigate how a long wave in upper planetary wave behaves as the season advances. First, normal upper chart will be analysed, secondly development of planetary wave from spring to summer,1950, will be analysed for 30-day,15-day and 5-day mean situation.
The characteristics of monthly differential pattern for normal 500mb chart have been explained.
Lastly, it has been found that the fluctuations of the mean amplitude for various wave numbers are mutually related.
These relationships should be considered in constituting the forecasting scheme making use of Fourier Constants.View full abstractDownload PDF (3616K) -
K. Itoo1956 Volume 7 Issue 1 Pages 29-33
Published: August 20, 1956
Released on J-STAGE: December 11, 2012
JOURNAL FREE ACCESSThe size-distribution of falling snow flake was observed by employing the condenser paper coated with the powder of water blue pigment. It appears, on an average, that the number of small snow flake is greater than the large one. The distribution curves of the mass are flat or sharp. With a large amount of falling snow, equivalent water drops of snow flakes are 0.5 mm to 0.75 mm in diameter.View full abstractDownload PDF (713K) -
N. Yano, H. Naruse1956 Volume 7 Issue 1 Pages 34-41
Published: August 20, 1956
Released on J-STAGE: December 11, 2012
JOURNAL FREE ACCESSAfter various kinds of the dust collector were inspected and compared in order to observe radioactivity in the air, the electric dust collector was proved effective for the purpose.
Natural radioactivity in the air averages some 10-16C cm-3, which is mostly due to Radon daughter and Thoron daughter. The rel a tion between suction time and saturated time of natural radioactivity was studied.
Also is reported the diurnal variation of artificial radioactivity in the air from November 1954 to March 1956. Its activity reached some 10-7μc/l at maximum.View full abstractDownload PDF (890K) -
Y. Sugiura1956 Volume 7 Issue 1 Pages 42-48
Published: August 20, 1956
Released on J-STAGE: December 11, 2012
JOURNAL FREE ACCESSOn the diurnal variation of the amount of dissolved oxygen in the upper layers of the hydrosphere, the theoretically obtained results were verified in this paper by experiments carried out in water tanks kept in light and dark. Pond water in which phytoplanktons were flourishing was illuminated with a candescent lamp, and the time variation of dissolved oxygen was determined. The effect of escape from water surface due to diffusion of oxygen upon its time variation was clarified. Under a certain condition of illumination, no change of oxygen content was found in the 20 cm deep layer. It is noticeable that in this layer the time variation of oxygen content obtained experimentally agreed with the theoretical result. On the contrary, in an upper layer above the depth of 20 cm, the maximum amount of dissolved oxygen appeared earlier than was expected theoretically.View full abstractDownload PDF (905K) -
The Effect of Thermal Condition, Wind and Width of Landscape to the PlethysmogramK. Kamiyama1956 Volume 7 Issue 1 Pages 49-63
Published: August 20, 1956
Released on J-STAGE: December 11, 2012
JOURNAL FREE ACCESSA piezo-plethysmograph [1] with calibrating mechanism was devised. With cold stimulus on the palm of a hand, strong vasomotor reflex was observed corresponding to the difference between the skin temperature and the temperature of stimulus. When the process of giving light stimulus 30 seconds before a cold one was repeated 29 times, vasomotor reflex was caused by light stimulus alone.
Visible rays as well as infra-red rays exerted influence on vasomotor reflex.
The wind had some more effect on vasomotor reflex other than physical cooling effect, and a strong reflex was recognized with the wind blowing notwithstanding an over-coat and a scarf worn.
The reflex ceased soon after the wind blew out. The width of landscape had a strong effect on vasomotor reflex. The velocity of the change of volume in the finger was expressed as an index of vasomotor reflex.View full abstractDownload PDF (6698K) -
T. Ozawa1956 Volume 7 Issue 1 Pages 64-65
Published: August 20, 1956
Released on J-STAGE: December 11, 2012
JOURNAL FREE ACCESSDownload PDF (265K) -
Y. Sugiura1956 Volume 7 Issue 1 Pages 66-67
Published: August 20, 1956
Released on J-STAGE: December 11, 2012
JOURNAL FREE ACCESSWith a water sample of which the concentration of chloride ion ranges from 1 to 100 mg/l and the volume is above 20 cc, MOHR'S titrimetric method modified by Y. MIYAKE [1] is ordinarily used. Also, with a water sample of which the chloride concentration ranges from 0.1 to 10 mg/l and the volume is above 20 cc, the colorimetric method using mercuric thiocyanate [2] is very convenient.
The method of chloride determination in one drop (ca. 0.02 cc) of a water sample of which the chloride concentration ranges from 10 to 500 mg/l is presented in this report.View full abstractDownload PDF (241K)
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