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Volume 24, Issue 2
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[in Japanese]1987 Volume 24 Issue 2 Pages 49
Published: August 01, 1987
Released on J-STAGE: October 13, 2010
JOURNAL FREE ACCESSDownload PDF (141K) -
Hisanori NAGATA, Kiyoshi ISHIGURE1987 Volume 24 Issue 2 Pages 51-57
Published: August 01, 1987
Released on J-STAGE: October 13, 2010
JOURNAL FREE ACCESSUsing vital statistics in Japan as a source of data, the change in seasonality of monthly death rates from 1955 to 1983 was examined on 8 sex-age groups (males and females of 70-79, 40-49, 20-29 and 1-9 years old) . At first, the temporary variations of monthly death rates were eliminated referring to an arbitrary standard, then seasonal variation and trend of monthly death rates were separated by an iterative calculation supposing that the trend can be expressed by an exponential curve. About the seasonal variation of death rate and its annual change, the following results were obtained.
1) The temporary variation of monthly death rate can be an obstacle to find the real seasonality of death rate.
2) The elimination of trend may be necessary to find the seasonality of death rate accurately, but the change of seasonality by the elimination of trend is not so great even when death rate is decreasing rather remarkably.
3) Death rates of 70-79 and 40-49 years old males and females were high in winter and low in summer, and death rates of 1-9 years old males and females were high in summer.
4) The pattern of seasonal variation of death rate was relatively similar among years from 1955 to 1983, but the amplitude of the seasonal variation of death rate decreased recently in every sex-age group.View full abstractDownload PDF (812K) -
Takuji KISHIMOTO, Miyoko OKAZAKI, Yoichiro FUKUZAWA, Manabu TADA1987 Volume 24 Issue 2 Pages 59-65
Published: August 01, 1987
Released on J-STAGE: October 13, 2010
JOURNAL FREE ACCESSThe effects of sulpyrine (56. 2, 100, 178, 320, 562 μg/ml) on DNA, RNA, and protein synthesis in HeLa S3 cells at 36.7°C and at high temperature (38.8, 41.1°C) were investigated. The cells at various cell densities (2.0×104, 4.0×104 and 8.0×104 cells/ml) were inoculated into each well of 24-well plates, and after 24-h cultivation at 37°C, adherent cells were further cultured for 48 h at high temperature with or without sulpyrine. The synthesis of DNA, RNA and protein was inhibited toward high temperature in cases of cultivations without sulpyrine. The synthesis of DNA, RNA, and protein was inhibited in a concentration-dependent manner by the addition of sulpyrine at each temperature. DNA, RNA and protein-IC50 values (sulpyrine concentration inhibiting synthesis of DNA, RNA or protein by 50% relative to untreated cells) at each temperature showed a tendency to increase with the increase in cell density. DNA and protein-IC50 values at each cell density at 38.8°C were not significantly lower than those at 36.7°C. However, RNA-IC50 values at each cell density were significantly (p<0.005) decreased, depending on the temperature. RNA-IC50 values at a cell density of 4.0×104 per ml at 36.7°C and 38.8°C were decreased from 411.7μ15. 0 μg/ml to 221.0×23. 3 μg/ml, respectively. The RNA-1C50 value at 41.1°C was lower than that at 38.8°C. However, the RNA-IC50 value at 41.1°C was excluded from the discussion, because DNA, RNA, and protein synthesis was markedly depressed at that temperature. These results suggest that the inhibitory effect of sulpyrine on RNA synthesis in HeLa S3 cells is enhanced at high temperature.View full abstractDownload PDF (791K) -
—with special reference to psychiatric emergency casesHideyuki FUJIMORI, Masako SHIMURA1987 Volume 24 Issue 2 Pages 67-73
Published: August 01, 1987
Released on J-STAGE: December 10, 2010
JOURNAL FREE ACCESSThe authors examined psychiatric emergency cases (n=1219, male 850, female 369) admitted to a psychiatric hospital in Tokyo over a 53-month period (from December 1978 to April 1983), to examine the correlation between monthly numbers of psychiatric admissions and meteorological factors.
The results were as follows: 1) Psychiatric emergency admissions of male patients made a peak in spring, whereas female patients showed no obvious seasonal fluctuations. 2) Monthly frequency of admissions was positively correlated with the difference between maximum and minimum temperatures among male non-schizophrenic patients, who consisted mainly of cases of alcohol psychosis including alcohol dependency. 3) Neither of female schizophrenic and non-schizophrenic patients showed any significant correlations with meteorological factors in contrast to male patients.View full abstractDownload PDF (880K) -
Kazuto OKAMOTO, Naoto KOBAYASHI, Shuji SHIMADA, Shogo YAMAZAKI1987 Volume 24 Issue 2 Pages 75-84
Published: August 01, 1987
Released on J-STAGE: October 13, 2010
JOURNAL FREE ACCESSThe influence of the temperature rise due to the greenhouse effect is calculated for yields per unit area of wheat, corn and soyabean in the central part of the United States until the year 2050. The increase of the atmospheric carbon dioxide (CO2) has positive (photosynthesis stimulation etc.) and negative (droughts etc.) effects, both of which have been taken into account. Calculations are made for three different energy scenarios, two of which have the same total energy consumption but different fossil fuel consumptions and hence different CO2 emissions. Positive effects of CO2 are expressed by a model which simulates the dependence of the effects on the CO2 density reasonably well. Negative effects are assumed to be linearly proportional to the temperature rise.
Sensitivity analyses are made by varying parameters of the models. The difference between C3 (wheat and soyabean) and C4 (corn) is also taken into account. Results show that for Soyabean the effect on the yield per unit area is more favourable as the CO2 increase is smaller in most cases investigated. For wheat the situation is somewhat complicated, and in some cases the CO2 increase gives favourable results, although in other cases results are unfavourable. For corn the effect is almost definitely unfavourable for the increase of CO2. Thus, although the results are fairly complicated, they do not necessarily support the argument that the CO2 increase is favourable for agricultural production.View full abstractDownload PDF (1216K)
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